Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2 | /* Module definition and import implementation */ |
| 3 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 5 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 6 | #include "Python-ast.h" |
Kristján Valur Jónsson | 67387fb | 2007-04-25 00:17:39 +0000 | [diff] [blame] | 7 | #undef Yield /* undefine macro conflicting with winbase.h */ |
Neal Norwitz | adb69fc | 2005-12-17 20:54:49 +0000 | [diff] [blame] | 8 | #include "pyarena.h" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 9 | #include "pythonrun.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 10 | #include "errcode.h" |
Guido van Rossum | c405b7b | 1991-06-04 19:39:42 +0000 | [diff] [blame] | 11 | #include "marshal.h" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 12 | #include "code.h" |
Guido van Rossum | c405b7b | 1991-06-04 19:39:42 +0000 | [diff] [blame] | 13 | #include "compile.h" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 14 | #include "eval.h" |
Guido van Rossum | d8bac6d | 1992-02-26 15:19:13 +0000 | [diff] [blame] | 15 | #include "osdefs.h" |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 16 | #include "importdl.h" |
Guido van Rossum | c405b7b | 1991-06-04 19:39:42 +0000 | [diff] [blame] | 17 | |
Guido van Rossum | 55a8338 | 2000-09-20 20:31:38 +0000 | [diff] [blame] | 18 | #ifdef HAVE_FCNTL_H |
| 19 | #include <fcntl.h> |
| 20 | #endif |
Anthony Baxter | ac6bd46 | 2006-04-13 02:06:09 +0000 | [diff] [blame] | 21 | #ifdef __cplusplus |
| 22 | extern "C" { |
| 23 | #endif |
Guido van Rossum | 55a8338 | 2000-09-20 20:31:38 +0000 | [diff] [blame] | 24 | |
Christian Heimes | 5e8e6d2 | 2008-02-23 23:59:45 +0000 | [diff] [blame] | 25 | #ifdef MS_WINDOWS |
| 26 | /* for stat.st_mode */ |
| 27 | typedef unsigned short mode_t; |
| 28 | #endif |
| 29 | |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 30 | |
Jeremy Hylton | d4ceb31 | 2004-04-01 02:45:22 +0000 | [diff] [blame] | 31 | /* Magic word to reject .pyc files generated by other Python versions. |
| 32 | It should change for each incompatible change to the bytecode. |
| 33 | |
| 34 | The value of CR and LF is incorporated so if you ever read or write |
Guido van Rossum | 7faeab3 | 1995-07-07 22:50:36 +0000 | [diff] [blame] | 35 | a .pyc file in text mode the magic number will be wrong; also, the |
Tim Peters | 36515e2 | 2001-11-18 04:06:29 +0000 | [diff] [blame] | 36 | Apple MPW compiler swaps their values, botching string constants. |
Marc-André Lemburg | bd3be8f | 2002-02-07 11:33:49 +0000 | [diff] [blame] | 37 | |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 38 | The magic numbers must be spaced apart atleast 2 values, as the |
| 39 | -U interpeter flag will cause MAGIC+1 being used. They have been |
| 40 | odd numbers for some time now. |
Marc-André Lemburg | bd3be8f | 2002-02-07 11:33:49 +0000 | [diff] [blame] | 41 | |
Jeremy Hylton | d4ceb31 | 2004-04-01 02:45:22 +0000 | [diff] [blame] | 42 | There were a variety of old schemes for setting the magic number. |
| 43 | The current working scheme is to increment the previous value by |
| 44 | 10. |
Guido van Rossum | f689492 | 2002-08-31 15:16:14 +0000 | [diff] [blame] | 45 | |
Marc-André Lemburg | bd3be8f | 2002-02-07 11:33:49 +0000 | [diff] [blame] | 46 | Known values: |
| 47 | Python 1.5: 20121 |
| 48 | Python 1.5.1: 20121 |
| 49 | Python 1.5.2: 20121 |
Skip Montanaro | 4ec3c26 | 2006-03-25 14:12:03 +0000 | [diff] [blame] | 50 | Python 1.6: 50428 |
Marc-André Lemburg | bd3be8f | 2002-02-07 11:33:49 +0000 | [diff] [blame] | 51 | Python 2.0: 50823 |
| 52 | Python 2.0.1: 50823 |
| 53 | Python 2.1: 60202 |
| 54 | Python 2.1.1: 60202 |
| 55 | Python 2.1.2: 60202 |
| 56 | Python 2.2: 60717 |
Neal Norwitz | 7fdcb41 | 2002-06-14 01:07:39 +0000 | [diff] [blame] | 57 | Python 2.3a0: 62011 |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 58 | Python 2.3a0: 62021 |
Guido van Rossum | f689492 | 2002-08-31 15:16:14 +0000 | [diff] [blame] | 59 | Python 2.3a0: 62011 (!) |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 60 | Python 2.4a0: 62041 |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 61 | Python 2.4a3: 62051 |
Raymond Hettinger | 2c31a05 | 2004-09-22 18:44:21 +0000 | [diff] [blame] | 62 | Python 2.4b1: 62061 |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 63 | Python 2.5a0: 62071 |
Michael W. Hudson | aee2e28 | 2005-10-21 11:32:20 +0000 | [diff] [blame] | 64 | Python 2.5a0: 62081 (ast-branch) |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 65 | Python 2.5a0: 62091 (with) |
Guido van Rossum | f669436 | 2006-03-10 02:28:35 +0000 | [diff] [blame] | 66 | Python 2.5a0: 62092 (changed WITH_CLEANUP opcode) |
Neal Norwitz | 0d62a06 | 2006-07-30 06:53:31 +0000 | [diff] [blame] | 67 | Python 2.5b3: 62101 (fix wrong code: for x, in ...) |
| 68 | Python 2.5b3: 62111 (fix wrong code: x += yield) |
Neal Norwitz | 9a70f95 | 2006-08-04 05:12:19 +0000 | [diff] [blame] | 69 | Python 2.5c1: 62121 (fix wrong lnotab with for loops and |
| 70 | storing constants that should have been removed) |
Neal Norwitz | dac090d | 2006-09-05 03:53:08 +0000 | [diff] [blame] | 71 | Python 2.5c2: 62131 (fix wrong code: for x, in ... in listcomp/genexp) |
Raymond Hettinger | effde12 | 2007-12-18 18:26:18 +0000 | [diff] [blame] | 72 | Python 2.6a0: 62151 (peephole optimizations and STORE_MAP opcode) |
Nick Coghlan | 7af53be | 2008-03-07 14:13:28 +0000 | [diff] [blame] | 73 | Python 2.6a1: 62161 (WITH_CLEANUP optimization) |
Antoine Pitrou | d0c3515 | 2008-12-17 00:38:28 +0000 | [diff] [blame] | 74 | Python 2.7a0: 62171 (optimize list comprehensions/change LIST_APPEND) |
Jeffrey Yasskin | 68d6852 | 2009-02-28 19:03:21 +0000 | [diff] [blame] | 75 | Python 2.7a0: 62181 (optimize conditional branches: |
| 76 | introduce POP_JUMP_IF_FALSE and POP_JUMP_IF_TRUE) |
Benjamin Peterson | 1880d8b | 2009-05-25 13:13:44 +0000 | [diff] [blame] | 77 | Python 2.7a0 62191 (introduce SETUP_WITH) |
Alexandre Vassalotti | ee936a2 | 2010-01-09 23:35:54 +0000 | [diff] [blame] | 78 | Python 2.7a0 62201 (introduce BUILD_SET) |
Alexandre Vassalotti | b646547 | 2010-01-11 22:36:12 +0000 | [diff] [blame] | 79 | Python 2.7a0 62211 (introduce MAP_ADD and SET_ADD) |
Michael W. Hudson | aee2e28 | 2005-10-21 11:32:20 +0000 | [diff] [blame] | 80 | . |
Tim Peters | 36515e2 | 2001-11-18 04:06:29 +0000 | [diff] [blame] | 81 | */ |
Alexandre Vassalotti | b646547 | 2010-01-11 22:36:12 +0000 | [diff] [blame] | 82 | #define MAGIC (62211 | ((long)'\r'<<16) | ((long)'\n'<<24)) |
Guido van Rossum | 3ddee71 | 1991-12-16 13:06:34 +0000 | [diff] [blame] | 83 | |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 84 | /* Magic word as global; note that _PyImport_Init() can change the |
Jeremy Hylton | 9262b8a | 2000-06-30 04:59:17 +0000 | [diff] [blame] | 85 | value of this global to accommodate for alterations of how the |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 86 | compiler works which are enabled by command line switches. */ |
Christian Heimes | 61e4590 | 2008-03-27 10:35:52 +0000 | [diff] [blame] | 87 | static long pyc_magic = MAGIC; |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 88 | |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 89 | /* See _PyImport_FixupExtension() below */ |
| 90 | static PyObject *extensions = NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 91 | |
Guido van Rossum | 771c6c8 | 1997-10-31 18:37:24 +0000 | [diff] [blame] | 92 | /* This table is defined in config.c: */ |
| 93 | extern struct _inittab _PyImport_Inittab[]; |
| 94 | |
| 95 | struct _inittab *PyImport_Inittab = _PyImport_Inittab; |
Guido van Rossum | 66f1fa8 | 1991-04-03 19:03:52 +0000 | [diff] [blame] | 96 | |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 97 | /* these tables define the module suffixes that Python recognizes */ |
| 98 | struct filedescr * _PyImport_Filetab = NULL; |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 99 | |
| 100 | #ifdef RISCOS |
| 101 | static const struct filedescr _PyImport_StandardFiletab[] = { |
Jack Jansen | c88da1f | 2002-05-28 10:58:19 +0000 | [diff] [blame] | 102 | {"/py", "U", PY_SOURCE}, |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 103 | {"/pyc", "rb", PY_COMPILED}, |
| 104 | {0, 0} |
| 105 | }; |
| 106 | #else |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 107 | static const struct filedescr _PyImport_StandardFiletab[] = { |
Jack Jansen | c88da1f | 2002-05-28 10:58:19 +0000 | [diff] [blame] | 108 | {".py", "U", PY_SOURCE}, |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 109 | #ifdef MS_WINDOWS |
Jack Jansen | c88da1f | 2002-05-28 10:58:19 +0000 | [diff] [blame] | 110 | {".pyw", "U", PY_SOURCE}, |
Tim Peters | 36515e2 | 2001-11-18 04:06:29 +0000 | [diff] [blame] | 111 | #endif |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 112 | {".pyc", "rb", PY_COMPILED}, |
| 113 | {0, 0} |
| 114 | }; |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 115 | #endif |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 116 | |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 117 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 118 | /* Initialize things */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 119 | |
| 120 | void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 121 | _PyImport_Init(void) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 122 | { |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 123 | const struct filedescr *scan; |
| 124 | struct filedescr *filetab; |
| 125 | int countD = 0; |
| 126 | int countS = 0; |
| 127 | |
| 128 | /* prepare _PyImport_Filetab: copy entries from |
| 129 | _PyImport_DynLoadFiletab and _PyImport_StandardFiletab. |
| 130 | */ |
Georg Brandl | add36e5 | 2007-08-23 18:08:06 +0000 | [diff] [blame] | 131 | #ifdef HAVE_DYNAMIC_LOADING |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 132 | for (scan = _PyImport_DynLoadFiletab; scan->suffix != NULL; ++scan) |
| 133 | ++countD; |
Georg Brandl | add36e5 | 2007-08-23 18:08:06 +0000 | [diff] [blame] | 134 | #endif |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 135 | for (scan = _PyImport_StandardFiletab; scan->suffix != NULL; ++scan) |
| 136 | ++countS; |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 137 | filetab = PyMem_NEW(struct filedescr, countD + countS + 1); |
Neal Norwitz | e1fdb32 | 2006-07-21 05:32:28 +0000 | [diff] [blame] | 138 | if (filetab == NULL) |
Neal Norwitz | 33722ae | 2006-07-21 07:59:02 +0000 | [diff] [blame] | 139 | Py_FatalError("Can't initialize import file table."); |
Georg Brandl | add36e5 | 2007-08-23 18:08:06 +0000 | [diff] [blame] | 140 | #ifdef HAVE_DYNAMIC_LOADING |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 141 | memcpy(filetab, _PyImport_DynLoadFiletab, |
| 142 | countD * sizeof(struct filedescr)); |
Georg Brandl | add36e5 | 2007-08-23 18:08:06 +0000 | [diff] [blame] | 143 | #endif |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 144 | memcpy(filetab + countD, _PyImport_StandardFiletab, |
| 145 | countS * sizeof(struct filedescr)); |
| 146 | filetab[countD + countS].suffix = NULL; |
| 147 | |
| 148 | _PyImport_Filetab = filetab; |
| 149 | |
Guido van Rossum | 0824f63 | 1997-03-11 18:37:35 +0000 | [diff] [blame] | 150 | if (Py_OptimizeFlag) { |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 151 | /* Replace ".pyc" with ".pyo" in _PyImport_Filetab */ |
| 152 | for (; filetab->suffix != NULL; filetab++) { |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 153 | #ifndef RISCOS |
Guido van Rossum | ed1170e | 1999-12-20 21:23:41 +0000 | [diff] [blame] | 154 | if (strcmp(filetab->suffix, ".pyc") == 0) |
| 155 | filetab->suffix = ".pyo"; |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 156 | #else |
| 157 | if (strcmp(filetab->suffix, "/pyc") == 0) |
| 158 | filetab->suffix = "/pyo"; |
| 159 | #endif |
Guido van Rossum | 0824f63 | 1997-03-11 18:37:35 +0000 | [diff] [blame] | 160 | } |
| 161 | } |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 162 | |
| 163 | if (Py_UnicodeFlag) { |
| 164 | /* Fix the pyc_magic so that byte compiled code created |
| 165 | using the all-Unicode method doesn't interfere with |
| 166 | code created in normal operation mode. */ |
| 167 | pyc_magic = MAGIC + 1; |
| 168 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 169 | } |
| 170 | |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 171 | void |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 172 | _PyImportHooks_Init(void) |
| 173 | { |
| 174 | PyObject *v, *path_hooks = NULL, *zimpimport; |
| 175 | int err = 0; |
| 176 | |
| 177 | /* adding sys.path_hooks and sys.path_importer_cache, setting up |
| 178 | zipimport */ |
Nick Coghlan | 327a39b | 2007-11-18 11:56:28 +0000 | [diff] [blame] | 179 | if (PyType_Ready(&PyNullImporter_Type) < 0) |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 180 | goto error; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 181 | |
| 182 | if (Py_VerboseFlag) |
| 183 | PySys_WriteStderr("# installing zipimport hook\n"); |
| 184 | |
| 185 | v = PyList_New(0); |
| 186 | if (v == NULL) |
| 187 | goto error; |
| 188 | err = PySys_SetObject("meta_path", v); |
| 189 | Py_DECREF(v); |
| 190 | if (err) |
| 191 | goto error; |
| 192 | v = PyDict_New(); |
| 193 | if (v == NULL) |
| 194 | goto error; |
| 195 | err = PySys_SetObject("path_importer_cache", v); |
| 196 | Py_DECREF(v); |
| 197 | if (err) |
| 198 | goto error; |
| 199 | path_hooks = PyList_New(0); |
| 200 | if (path_hooks == NULL) |
| 201 | goto error; |
| 202 | err = PySys_SetObject("path_hooks", path_hooks); |
| 203 | if (err) { |
| 204 | error: |
| 205 | PyErr_Print(); |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 206 | Py_FatalError("initializing sys.meta_path, sys.path_hooks, " |
| 207 | "path_importer_cache, or NullImporter failed" |
| 208 | ); |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 209 | } |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 210 | |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 211 | zimpimport = PyImport_ImportModule("zipimport"); |
| 212 | if (zimpimport == NULL) { |
| 213 | PyErr_Clear(); /* No zip import module -- okay */ |
| 214 | if (Py_VerboseFlag) |
| 215 | PySys_WriteStderr("# can't import zipimport\n"); |
| 216 | } |
| 217 | else { |
| 218 | PyObject *zipimporter = PyObject_GetAttrString(zimpimport, |
| 219 | "zipimporter"); |
| 220 | Py_DECREF(zimpimport); |
| 221 | if (zipimporter == NULL) { |
| 222 | PyErr_Clear(); /* No zipimporter object -- okay */ |
| 223 | if (Py_VerboseFlag) |
| 224 | PySys_WriteStderr( |
Fred Drake | 1e5fc55 | 2003-07-11 15:01:02 +0000 | [diff] [blame] | 225 | "# can't import zipimport.zipimporter\n"); |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 226 | } |
| 227 | else { |
| 228 | /* sys.path_hooks.append(zipimporter) */ |
| 229 | err = PyList_Append(path_hooks, zipimporter); |
| 230 | Py_DECREF(zipimporter); |
| 231 | if (err) |
| 232 | goto error; |
| 233 | if (Py_VerboseFlag) |
| 234 | PySys_WriteStderr( |
| 235 | "# installed zipimport hook\n"); |
| 236 | } |
| 237 | } |
| 238 | Py_DECREF(path_hooks); |
| 239 | } |
| 240 | |
| 241 | void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 242 | _PyImport_Fini(void) |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 243 | { |
| 244 | Py_XDECREF(extensions); |
| 245 | extensions = NULL; |
Barry Warsaw | 8429448 | 2000-10-03 16:02:05 +0000 | [diff] [blame] | 246 | PyMem_DEL(_PyImport_Filetab); |
| 247 | _PyImport_Filetab = NULL; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 251 | /* Locking primitives to prevent parallel imports of the same module |
| 252 | in different threads to return with a partially loaded module. |
| 253 | These calls are serialized by the global interpreter lock. */ |
| 254 | |
| 255 | #ifdef WITH_THREAD |
| 256 | |
Guido van Rossum | 49b5606 | 1998-10-01 20:42:43 +0000 | [diff] [blame] | 257 | #include "pythread.h" |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 258 | |
Guido van Rossum | 65d5b57 | 1998-12-21 19:32:43 +0000 | [diff] [blame] | 259 | static PyThread_type_lock import_lock = 0; |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 260 | static long import_lock_thread = -1; |
| 261 | static int import_lock_level = 0; |
| 262 | |
Thomas Wouters | c4dcb38 | 2009-09-16 19:55:54 +0000 | [diff] [blame] | 263 | void |
| 264 | _PyImport_AcquireLock(void) |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 265 | { |
Guido van Rossum | 65d5b57 | 1998-12-21 19:32:43 +0000 | [diff] [blame] | 266 | long me = PyThread_get_thread_ident(); |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 267 | if (me == -1) |
| 268 | return; /* Too bad */ |
Neal Norwitz | e1fdb32 | 2006-07-21 05:32:28 +0000 | [diff] [blame] | 269 | if (import_lock == NULL) { |
Guido van Rossum | 65d5b57 | 1998-12-21 19:32:43 +0000 | [diff] [blame] | 270 | import_lock = PyThread_allocate_lock(); |
Neal Norwitz | e1fdb32 | 2006-07-21 05:32:28 +0000 | [diff] [blame] | 271 | if (import_lock == NULL) |
| 272 | return; /* Nothing much we can do. */ |
| 273 | } |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 274 | if (import_lock_thread == me) { |
| 275 | import_lock_level++; |
| 276 | return; |
| 277 | } |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 278 | if (import_lock_thread != -1 || !PyThread_acquire_lock(import_lock, 0)) |
| 279 | { |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 280 | PyThreadState *tstate = PyEval_SaveThread(); |
Guido van Rossum | 65d5b57 | 1998-12-21 19:32:43 +0000 | [diff] [blame] | 281 | PyThread_acquire_lock(import_lock, 1); |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 282 | PyEval_RestoreThread(tstate); |
| 283 | } |
| 284 | import_lock_thread = me; |
| 285 | import_lock_level = 1; |
| 286 | } |
| 287 | |
Thomas Wouters | c4dcb38 | 2009-09-16 19:55:54 +0000 | [diff] [blame] | 288 | int |
| 289 | _PyImport_ReleaseLock(void) |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 290 | { |
Guido van Rossum | 65d5b57 | 1998-12-21 19:32:43 +0000 | [diff] [blame] | 291 | long me = PyThread_get_thread_ident(); |
Neal Norwitz | e1fdb32 | 2006-07-21 05:32:28 +0000 | [diff] [blame] | 292 | if (me == -1 || import_lock == NULL) |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 293 | return 0; /* Too bad */ |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 294 | if (import_lock_thread != me) |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 295 | return -1; |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 296 | import_lock_level--; |
| 297 | if (import_lock_level == 0) { |
| 298 | import_lock_thread = -1; |
Guido van Rossum | 65d5b57 | 1998-12-21 19:32:43 +0000 | [diff] [blame] | 299 | PyThread_release_lock(import_lock); |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 300 | } |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 301 | return 1; |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 302 | } |
| 303 | |
Thomas Wouters | c4dcb38 | 2009-09-16 19:55:54 +0000 | [diff] [blame] | 304 | /* This function used to be called from PyOS_AfterFork to ensure that newly |
| 305 | created child processes do not share locks with the parent, but for some |
| 306 | reason only on AIX systems. Instead of re-initializing the lock, we now |
| 307 | acquire the import lock around fork() calls. */ |
Guido van Rossum | 8ee3e5a | 2005-09-14 18:09:42 +0000 | [diff] [blame] | 308 | |
| 309 | void |
| 310 | _PyImport_ReInitLock(void) |
| 311 | { |
Guido van Rossum | 8ee3e5a | 2005-09-14 18:09:42 +0000 | [diff] [blame] | 312 | } |
| 313 | |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 314 | #endif |
| 315 | |
Tim Peters | 6923234 | 2001-08-30 05:16:13 +0000 | [diff] [blame] | 316 | static PyObject * |
Neal Norwitz | 08ea61a | 2003-02-17 18:18:00 +0000 | [diff] [blame] | 317 | imp_lock_held(PyObject *self, PyObject *noargs) |
Tim Peters | 6923234 | 2001-08-30 05:16:13 +0000 | [diff] [blame] | 318 | { |
Tim Peters | 6923234 | 2001-08-30 05:16:13 +0000 | [diff] [blame] | 319 | #ifdef WITH_THREAD |
Guido van Rossum | b8bff3f | 2002-04-07 06:34:38 +0000 | [diff] [blame] | 320 | return PyBool_FromLong(import_lock_thread != -1); |
Tim Peters | 6923234 | 2001-08-30 05:16:13 +0000 | [diff] [blame] | 321 | #else |
Guido van Rossum | b8bff3f | 2002-04-07 06:34:38 +0000 | [diff] [blame] | 322 | return PyBool_FromLong(0); |
Tim Peters | 6923234 | 2001-08-30 05:16:13 +0000 | [diff] [blame] | 323 | #endif |
| 324 | } |
| 325 | |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 326 | static PyObject * |
Neal Norwitz | 08ea61a | 2003-02-17 18:18:00 +0000 | [diff] [blame] | 327 | imp_acquire_lock(PyObject *self, PyObject *noargs) |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 328 | { |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 329 | #ifdef WITH_THREAD |
Thomas Wouters | c4dcb38 | 2009-09-16 19:55:54 +0000 | [diff] [blame] | 330 | _PyImport_AcquireLock(); |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 331 | #endif |
Neal Norwitz | 2294c0d | 2003-02-12 23:02:21 +0000 | [diff] [blame] | 332 | Py_INCREF(Py_None); |
| 333 | return Py_None; |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | static PyObject * |
Neal Norwitz | 08ea61a | 2003-02-17 18:18:00 +0000 | [diff] [blame] | 337 | imp_release_lock(PyObject *self, PyObject *noargs) |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 338 | { |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 339 | #ifdef WITH_THREAD |
Thomas Wouters | c4dcb38 | 2009-09-16 19:55:54 +0000 | [diff] [blame] | 340 | if (_PyImport_ReleaseLock() < 0) { |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 341 | PyErr_SetString(PyExc_RuntimeError, |
| 342 | "not holding the import lock"); |
| 343 | return NULL; |
| 344 | } |
| 345 | #endif |
Neal Norwitz | 2294c0d | 2003-02-12 23:02:21 +0000 | [diff] [blame] | 346 | Py_INCREF(Py_None); |
| 347 | return Py_None; |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 348 | } |
| 349 | |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 350 | static void |
Neal Norwitz | 75c7c80 | 2007-03-13 05:31:38 +0000 | [diff] [blame] | 351 | imp_modules_reloading_clear(void) |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 352 | { |
| 353 | PyInterpreterState *interp = PyThreadState_Get()->interp; |
Neal Norwitz | 75c7c80 | 2007-03-13 05:31:38 +0000 | [diff] [blame] | 354 | if (interp->modules_reloading != NULL) |
| 355 | PyDict_Clear(interp->modules_reloading); |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 356 | } |
| 357 | |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 358 | /* Helper for sys */ |
| 359 | |
| 360 | PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 361 | PyImport_GetModuleDict(void) |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 362 | { |
Nicholas Bastin | e5662ae | 2004-03-24 22:22:12 +0000 | [diff] [blame] | 363 | PyInterpreterState *interp = PyThreadState_GET()->interp; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 364 | if (interp->modules == NULL) |
| 365 | Py_FatalError("PyImport_GetModuleDict: no module dictionary!"); |
| 366 | return interp->modules; |
| 367 | } |
| 368 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 369 | |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 370 | /* List of names to clear in sys */ |
| 371 | static char* sys_deletes[] = { |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 372 | "path", "argv", "ps1", "ps2", "exitfunc", |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 373 | "exc_type", "exc_value", "exc_traceback", |
| 374 | "last_type", "last_value", "last_traceback", |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 375 | "path_hooks", "path_importer_cache", "meta_path", |
Christian Heimes | 0d92443 | 2008-01-30 17:21:22 +0000 | [diff] [blame] | 376 | /* misc stuff */ |
| 377 | "flags", "float_info", |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 378 | NULL |
| 379 | }; |
| 380 | |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 381 | static char* sys_files[] = { |
| 382 | "stdin", "__stdin__", |
| 383 | "stdout", "__stdout__", |
| 384 | "stderr", "__stderr__", |
| 385 | NULL |
| 386 | }; |
| 387 | |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 388 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 389 | /* Un-initialize things, as good as we can */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 390 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 391 | void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 392 | PyImport_Cleanup(void) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 393 | { |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 394 | Py_ssize_t pos, ndone; |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 395 | char *name; |
| 396 | PyObject *key, *value, *dict; |
Nicholas Bastin | e5662ae | 2004-03-24 22:22:12 +0000 | [diff] [blame] | 397 | PyInterpreterState *interp = PyThreadState_GET()->interp; |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 398 | PyObject *modules = interp->modules; |
| 399 | |
| 400 | if (modules == NULL) |
| 401 | return; /* Already done */ |
| 402 | |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 403 | /* Delete some special variables first. These are common |
| 404 | places where user values hide and people complain when their |
| 405 | destructors fail. Since the modules containing them are |
| 406 | deleted *last* of all, they would come too late in the normal |
| 407 | destruction order. Sigh. */ |
| 408 | |
| 409 | value = PyDict_GetItemString(modules, "__builtin__"); |
| 410 | if (value != NULL && PyModule_Check(value)) { |
| 411 | dict = PyModule_GetDict(value); |
| 412 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 413 | PySys_WriteStderr("# clear __builtin__._\n"); |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 414 | PyDict_SetItemString(dict, "_", Py_None); |
| 415 | } |
| 416 | value = PyDict_GetItemString(modules, "sys"); |
| 417 | if (value != NULL && PyModule_Check(value)) { |
| 418 | char **p; |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 419 | PyObject *v; |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 420 | dict = PyModule_GetDict(value); |
| 421 | for (p = sys_deletes; *p != NULL; p++) { |
| 422 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 423 | PySys_WriteStderr("# clear sys.%s\n", *p); |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 424 | PyDict_SetItemString(dict, *p, Py_None); |
| 425 | } |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 426 | for (p = sys_files; *p != NULL; p+=2) { |
| 427 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 428 | PySys_WriteStderr("# restore sys.%s\n", *p); |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 429 | v = PyDict_GetItemString(dict, *(p+1)); |
| 430 | if (v == NULL) |
| 431 | v = Py_None; |
| 432 | PyDict_SetItemString(dict, *p, v); |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | /* First, delete __main__ */ |
| 437 | value = PyDict_GetItemString(modules, "__main__"); |
| 438 | if (value != NULL && PyModule_Check(value)) { |
| 439 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 440 | PySys_WriteStderr("# cleanup __main__\n"); |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 441 | _PyModule_Clear(value); |
| 442 | PyDict_SetItemString(modules, "__main__", Py_None); |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 443 | } |
| 444 | |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 445 | /* The special treatment of __builtin__ here is because even |
| 446 | when it's not referenced as a module, its dictionary is |
| 447 | referenced by almost every module's __builtins__. Since |
| 448 | deleting a module clears its dictionary (even if there are |
| 449 | references left to it), we need to delete the __builtin__ |
| 450 | module last. Likewise, we don't delete sys until the very |
| 451 | end because it is implicitly referenced (e.g. by print). |
| 452 | |
| 453 | Also note that we 'delete' modules by replacing their entry |
| 454 | in the modules dict with None, rather than really deleting |
| 455 | them; this avoids a rehash of the modules dictionary and |
| 456 | also marks them as "non existent" so they won't be |
| 457 | re-imported. */ |
| 458 | |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 459 | /* Next, repeatedly delete modules with a reference count of |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 460 | one (skipping __builtin__ and sys) and delete them */ |
| 461 | do { |
| 462 | ndone = 0; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 463 | pos = 0; |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 464 | while (PyDict_Next(modules, &pos, &key, &value)) { |
| 465 | if (value->ob_refcnt != 1) |
| 466 | continue; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 467 | if (PyString_Check(key) && PyModule_Check(value)) { |
| 468 | name = PyString_AS_STRING(key); |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 469 | if (strcmp(name, "__builtin__") == 0) |
| 470 | continue; |
| 471 | if (strcmp(name, "sys") == 0) |
| 472 | continue; |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 473 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 474 | PySys_WriteStderr( |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 475 | "# cleanup[1] %s\n", name); |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 476 | _PyModule_Clear(value); |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 477 | PyDict_SetItem(modules, key, Py_None); |
| 478 | ndone++; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 479 | } |
| 480 | } |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 481 | } while (ndone > 0); |
| 482 | |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 483 | /* Next, delete all modules (still skipping __builtin__ and sys) */ |
| 484 | pos = 0; |
| 485 | while (PyDict_Next(modules, &pos, &key, &value)) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 486 | if (PyString_Check(key) && PyModule_Check(value)) { |
| 487 | name = PyString_AS_STRING(key); |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 488 | if (strcmp(name, "__builtin__") == 0) |
| 489 | continue; |
| 490 | if (strcmp(name, "sys") == 0) |
| 491 | continue; |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 492 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 493 | PySys_WriteStderr("# cleanup[2] %s\n", name); |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 494 | _PyModule_Clear(value); |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 495 | PyDict_SetItem(modules, key, Py_None); |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | /* Next, delete sys and __builtin__ (in that order) */ |
| 500 | value = PyDict_GetItemString(modules, "sys"); |
| 501 | if (value != NULL && PyModule_Check(value)) { |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 502 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 503 | PySys_WriteStderr("# cleanup sys\n"); |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 504 | _PyModule_Clear(value); |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 505 | PyDict_SetItemString(modules, "sys", Py_None); |
| 506 | } |
| 507 | value = PyDict_GetItemString(modules, "__builtin__"); |
| 508 | if (value != NULL && PyModule_Check(value)) { |
Guido van Rossum | a0fec2b | 1998-02-06 17:16:02 +0000 | [diff] [blame] | 509 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 510 | PySys_WriteStderr("# cleanup __builtin__\n"); |
Guido van Rossum | 05f9dce | 1998-02-19 20:58:44 +0000 | [diff] [blame] | 511 | _PyModule_Clear(value); |
Guido van Rossum | 758eec0 | 1998-01-19 21:58:26 +0000 | [diff] [blame] | 512 | PyDict_SetItemString(modules, "__builtin__", Py_None); |
| 513 | } |
| 514 | |
| 515 | /* Finally, clear and delete the modules directory */ |
| 516 | PyDict_Clear(modules); |
| 517 | interp->modules = NULL; |
| 518 | Py_DECREF(modules); |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 519 | Py_CLEAR(interp->modules_reloading); |
Guido van Rossum | 8d15b5d | 1990-10-26 14:58:58 +0000 | [diff] [blame] | 520 | } |
Guido van Rossum | 7f133ed | 1991-02-19 12:23:57 +0000 | [diff] [blame] | 521 | |
| 522 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 523 | /* Helper for pythonrun.c -- return magic number */ |
| 524 | |
| 525 | long |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 526 | PyImport_GetMagicNumber(void) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 527 | { |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 528 | return pyc_magic; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 529 | } |
| 530 | |
| 531 | |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 532 | /* Magic for extension modules (built-in as well as dynamically |
| 533 | loaded). To prevent initializing an extension module more than |
| 534 | once, we keep a static dictionary 'extensions' keyed by module name |
| 535 | (for built-in modules) or by filename (for dynamically loaded |
Barry Warsaw | 9288338 | 2001-08-13 23:05:44 +0000 | [diff] [blame] | 536 | modules), containing these modules. A copy of the module's |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 537 | dictionary is stored by calling _PyImport_FixupExtension() |
| 538 | immediately after the module initialization function succeeds. A |
| 539 | copy can be retrieved from there by calling |
| 540 | _PyImport_FindExtension(). */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 541 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 542 | PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 543 | _PyImport_FixupExtension(char *name, char *filename) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 544 | { |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 545 | PyObject *modules, *mod, *dict, *copy; |
| 546 | if (extensions == NULL) { |
| 547 | extensions = PyDict_New(); |
| 548 | if (extensions == NULL) |
| 549 | return NULL; |
| 550 | } |
| 551 | modules = PyImport_GetModuleDict(); |
| 552 | mod = PyDict_GetItemString(modules, name); |
| 553 | if (mod == NULL || !PyModule_Check(mod)) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 554 | PyErr_Format(PyExc_SystemError, |
| 555 | "_PyImport_FixupExtension: module %.200s not loaded", name); |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 556 | return NULL; |
| 557 | } |
| 558 | dict = PyModule_GetDict(mod); |
| 559 | if (dict == NULL) |
| 560 | return NULL; |
Fred Drake | 9cd0efc | 2001-10-25 21:38:59 +0000 | [diff] [blame] | 561 | copy = PyDict_Copy(dict); |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 562 | if (copy == NULL) |
| 563 | return NULL; |
| 564 | PyDict_SetItemString(extensions, filename, copy); |
| 565 | Py_DECREF(copy); |
| 566 | return copy; |
| 567 | } |
| 568 | |
| 569 | PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 570 | _PyImport_FindExtension(char *name, char *filename) |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 571 | { |
Fred Drake | 9cd0efc | 2001-10-25 21:38:59 +0000 | [diff] [blame] | 572 | PyObject *dict, *mod, *mdict; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 573 | if (extensions == NULL) |
| 574 | return NULL; |
| 575 | dict = PyDict_GetItemString(extensions, filename); |
| 576 | if (dict == NULL) |
| 577 | return NULL; |
| 578 | mod = PyImport_AddModule(name); |
| 579 | if (mod == NULL) |
| 580 | return NULL; |
| 581 | mdict = PyModule_GetDict(mod); |
| 582 | if (mdict == NULL) |
| 583 | return NULL; |
Fred Drake | 9cd0efc | 2001-10-25 21:38:59 +0000 | [diff] [blame] | 584 | if (PyDict_Update(mdict, dict)) |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 585 | return NULL; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 586 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 587 | PySys_WriteStderr("import %s # previously loaded (%s)\n", |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 588 | name, filename); |
| 589 | return mod; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | |
| 593 | /* Get the module object corresponding to a module name. |
| 594 | First check the modules dictionary if there's one there, |
Walter Dörwald | f0dfc7a | 2003-10-20 14:01:56 +0000 | [diff] [blame] | 595 | if not, create a new one and insert it in the modules dictionary. |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 596 | Because the former action is most common, THIS DOES NOT RETURN A |
| 597 | 'NEW' REFERENCE! */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 598 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 599 | PyObject * |
Jeremy Hylton | af68c87 | 2005-12-10 18:50:16 +0000 | [diff] [blame] | 600 | PyImport_AddModule(const char *name) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 601 | { |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 602 | PyObject *modules = PyImport_GetModuleDict(); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 603 | PyObject *m; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 604 | |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 605 | if ((m = PyDict_GetItemString(modules, name)) != NULL && |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 606 | PyModule_Check(m)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 607 | return m; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 608 | m = PyModule_New(name); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 609 | if (m == NULL) |
| 610 | return NULL; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 611 | if (PyDict_SetItemString(modules, name, m) != 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 612 | Py_DECREF(m); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 613 | return NULL; |
| 614 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 615 | Py_DECREF(m); /* Yes, it still exists, in modules! */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 616 | |
| 617 | return m; |
| 618 | } |
| 619 | |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 620 | /* Remove name from sys.modules, if it's there. */ |
| 621 | static void |
| 622 | _RemoveModule(const char *name) |
| 623 | { |
| 624 | PyObject *modules = PyImport_GetModuleDict(); |
| 625 | if (PyDict_GetItemString(modules, name) == NULL) |
| 626 | return; |
| 627 | if (PyDict_DelItemString(modules, name) < 0) |
| 628 | Py_FatalError("import: deleting existing key in" |
| 629 | "sys.modules failed"); |
| 630 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 631 | |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 632 | /* Execute a code object in a module and return the module object |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 633 | * WITH INCREMENTED REFERENCE COUNT. If an error occurs, name is |
| 634 | * removed from sys.modules, to avoid leaving damaged module objects |
| 635 | * in sys.modules. The caller may wish to restore the original |
| 636 | * module object (if any) in this case; PyImport_ReloadModule is an |
| 637 | * example. |
| 638 | */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 639 | PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 640 | PyImport_ExecCodeModule(char *name, PyObject *co) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 641 | { |
Guido van Rossum | e32bf6e | 1998-02-11 05:53:02 +0000 | [diff] [blame] | 642 | return PyImport_ExecCodeModuleEx(name, co, (char *)NULL); |
| 643 | } |
| 644 | |
| 645 | PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 646 | PyImport_ExecCodeModuleEx(char *name, PyObject *co, char *pathname) |
Guido van Rossum | e32bf6e | 1998-02-11 05:53:02 +0000 | [diff] [blame] | 647 | { |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 648 | PyObject *modules = PyImport_GetModuleDict(); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 649 | PyObject *m, *d, *v; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 650 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 651 | m = PyImport_AddModule(name); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 652 | if (m == NULL) |
| 653 | return NULL; |
Jeremy Hylton | ecd9129 | 2004-01-02 23:25:32 +0000 | [diff] [blame] | 654 | /* If the module is being reloaded, we get the old module back |
| 655 | and re-use its dict to exec the new code. */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 656 | d = PyModule_GetDict(m); |
| 657 | if (PyDict_GetItemString(d, "__builtins__") == NULL) { |
| 658 | if (PyDict_SetItemString(d, "__builtins__", |
| 659 | PyEval_GetBuiltins()) != 0) |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 660 | goto error; |
Guido van Rossum | 6135a87 | 1995-01-09 17:53:26 +0000 | [diff] [blame] | 661 | } |
Guido van Rossum | 9c9a07c | 1996-05-16 20:43:40 +0000 | [diff] [blame] | 662 | /* Remember the filename as the __file__ attribute */ |
Guido van Rossum | e32bf6e | 1998-02-11 05:53:02 +0000 | [diff] [blame] | 663 | v = NULL; |
| 664 | if (pathname != NULL) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 665 | v = PyString_FromString(pathname); |
Guido van Rossum | e32bf6e | 1998-02-11 05:53:02 +0000 | [diff] [blame] | 666 | if (v == NULL) |
| 667 | PyErr_Clear(); |
| 668 | } |
| 669 | if (v == NULL) { |
| 670 | v = ((PyCodeObject *)co)->co_filename; |
| 671 | Py_INCREF(v); |
| 672 | } |
| 673 | if (PyDict_SetItemString(d, "__file__", v) != 0) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 674 | PyErr_Clear(); /* Not important enough to report */ |
Guido van Rossum | e32bf6e | 1998-02-11 05:53:02 +0000 | [diff] [blame] | 675 | Py_DECREF(v); |
| 676 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 677 | v = PyEval_EvalCode((PyCodeObject *)co, d, d); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 678 | if (v == NULL) |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 679 | goto error; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 680 | Py_DECREF(v); |
Guido van Rossum | b65e85c | 1997-07-10 18:00:45 +0000 | [diff] [blame] | 681 | |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 682 | if ((m = PyDict_GetItemString(modules, name)) == NULL) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 683 | PyErr_Format(PyExc_ImportError, |
| 684 | "Loaded module %.200s not found in sys.modules", |
| 685 | name); |
Guido van Rossum | b65e85c | 1997-07-10 18:00:45 +0000 | [diff] [blame] | 686 | return NULL; |
| 687 | } |
| 688 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 689 | Py_INCREF(m); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 690 | |
| 691 | return m; |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 692 | |
| 693 | error: |
| 694 | _RemoveModule(name); |
| 695 | return NULL; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 696 | } |
| 697 | |
| 698 | |
| 699 | /* Given a pathname for a Python source file, fill a buffer with the |
| 700 | pathname for the corresponding compiled file. Return the pathname |
| 701 | for the compiled file, or NULL if there's no space in the buffer. |
| 702 | Doesn't set an exception. */ |
| 703 | |
| 704 | static char * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 705 | make_compiled_pathname(char *pathname, char *buf, size_t buflen) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 706 | { |
Tim Peters | c173137 | 2001-08-04 08:12:36 +0000 | [diff] [blame] | 707 | size_t len = strlen(pathname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 708 | if (len+2 > buflen) |
| 709 | return NULL; |
Tim Peters | c173137 | 2001-08-04 08:12:36 +0000 | [diff] [blame] | 710 | |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 711 | #ifdef MS_WINDOWS |
Tim Peters | c173137 | 2001-08-04 08:12:36 +0000 | [diff] [blame] | 712 | /* Treat .pyw as if it were .py. The case of ".pyw" must match |
| 713 | that used in _PyImport_StandardFiletab. */ |
| 714 | if (len >= 4 && strcmp(&pathname[len-4], ".pyw") == 0) |
| 715 | --len; /* pretend 'w' isn't there */ |
| 716 | #endif |
| 717 | memcpy(buf, pathname, len); |
| 718 | buf[len] = Py_OptimizeFlag ? 'o' : 'c'; |
| 719 | buf[len+1] = '\0'; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 720 | |
| 721 | return buf; |
| 722 | } |
| 723 | |
| 724 | |
| 725 | /* Given a pathname for a Python source file, its time of last |
| 726 | modification, and a pathname for a compiled file, check whether the |
| 727 | compiled file represents the same version of the source. If so, |
| 728 | return a FILE pointer for the compiled file, positioned just after |
| 729 | the header; if not, return NULL. |
| 730 | Doesn't set an exception. */ |
| 731 | |
| 732 | static FILE * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 733 | check_compiled_module(char *pathname, time_t mtime, char *cpathname) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 734 | { |
| 735 | FILE *fp; |
| 736 | long magic; |
| 737 | long pyc_mtime; |
| 738 | |
| 739 | fp = fopen(cpathname, "rb"); |
| 740 | if (fp == NULL) |
| 741 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 742 | magic = PyMarshal_ReadLongFromFile(fp); |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 743 | if (magic != pyc_magic) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 744 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 745 | PySys_WriteStderr("# %s has bad magic\n", cpathname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 746 | fclose(fp); |
| 747 | return NULL; |
| 748 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 749 | pyc_mtime = PyMarshal_ReadLongFromFile(fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 750 | if (pyc_mtime != mtime) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 751 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 752 | PySys_WriteStderr("# %s has bad mtime\n", cpathname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 753 | fclose(fp); |
| 754 | return NULL; |
| 755 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 756 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 757 | PySys_WriteStderr("# %s matches %s\n", cpathname, pathname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 758 | return fp; |
| 759 | } |
| 760 | |
| 761 | |
| 762 | /* Read a code object from a file and check it for validity */ |
| 763 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 764 | static PyCodeObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 765 | read_compiled_module(char *cpathname, FILE *fp) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 766 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 767 | PyObject *co; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 768 | |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 769 | co = PyMarshal_ReadLastObjectFromFile(fp); |
Armin Rigo | 01ab279 | 2004-03-26 15:09:27 +0000 | [diff] [blame] | 770 | if (co == NULL) |
| 771 | return NULL; |
| 772 | if (!PyCode_Check(co)) { |
| 773 | PyErr_Format(PyExc_ImportError, |
| 774 | "Non-code object in %.200s", cpathname); |
| 775 | Py_DECREF(co); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 776 | return NULL; |
| 777 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 778 | return (PyCodeObject *)co; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | |
| 782 | /* Load a module from a compiled file, execute it, and return its |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 783 | module object WITH INCREMENTED REFERENCE COUNT */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 784 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 785 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 786 | load_compiled_module(char *name, char *cpathname, FILE *fp) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 787 | { |
| 788 | long magic; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 789 | PyCodeObject *co; |
| 790 | PyObject *m; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 791 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 792 | magic = PyMarshal_ReadLongFromFile(fp); |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 793 | if (magic != pyc_magic) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 794 | PyErr_Format(PyExc_ImportError, |
| 795 | "Bad magic number in %.200s", cpathname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 796 | return NULL; |
| 797 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 798 | (void) PyMarshal_ReadLongFromFile(fp); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 799 | co = read_compiled_module(cpathname, fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 800 | if (co == NULL) |
| 801 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 802 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 803 | PySys_WriteStderr("import %s # precompiled from %s\n", |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 804 | name, cpathname); |
Guido van Rossum | e32bf6e | 1998-02-11 05:53:02 +0000 | [diff] [blame] | 805 | m = PyImport_ExecCodeModuleEx(name, (PyObject *)co, cpathname); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 806 | Py_DECREF(co); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 807 | |
| 808 | return m; |
| 809 | } |
| 810 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 811 | /* Parse a source file and return the corresponding code object */ |
| 812 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 813 | static PyCodeObject * |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 814 | parse_source_module(const char *pathname, FILE *fp) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 815 | { |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 816 | PyCodeObject *co = NULL; |
| 817 | mod_ty mod; |
Christian Heimes | 3c60833 | 2008-03-26 22:01:37 +0000 | [diff] [blame] | 818 | PyCompilerFlags flags; |
Neal Norwitz | 2a399b0 | 2006-09-11 04:28:16 +0000 | [diff] [blame] | 819 | PyArena *arena = PyArena_New(); |
| 820 | if (arena == NULL) |
| 821 | return NULL; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 822 | |
Christian Heimes | 7f23d86 | 2008-03-26 22:51:58 +0000 | [diff] [blame] | 823 | flags.cf_flags = 0; |
| 824 | |
Christian Heimes | 3c60833 | 2008-03-26 22:01:37 +0000 | [diff] [blame] | 825 | mod = PyParser_ASTFromFile(fp, pathname, Py_file_input, 0, 0, &flags, |
Neal Norwitz | adb69fc | 2005-12-17 20:54:49 +0000 | [diff] [blame] | 826 | NULL, arena); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 827 | if (mod) { |
Neal Norwitz | adb69fc | 2005-12-17 20:54:49 +0000 | [diff] [blame] | 828 | co = PyAST_Compile(mod, pathname, NULL, arena); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 829 | } |
Neal Norwitz | 2a399b0 | 2006-09-11 04:28:16 +0000 | [diff] [blame] | 830 | PyArena_Free(arena); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 831 | return co; |
| 832 | } |
| 833 | |
| 834 | |
Guido van Rossum | 55a8338 | 2000-09-20 20:31:38 +0000 | [diff] [blame] | 835 | /* Helper to open a bytecode file for writing in exclusive mode */ |
| 836 | |
| 837 | static FILE * |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 838 | open_exclusive(char *filename, mode_t mode) |
Guido van Rossum | 55a8338 | 2000-09-20 20:31:38 +0000 | [diff] [blame] | 839 | { |
| 840 | #if defined(O_EXCL)&&defined(O_CREAT)&&defined(O_WRONLY)&&defined(O_TRUNC) |
| 841 | /* Use O_EXCL to avoid a race condition when another process tries to |
| 842 | write the same file. When that happens, our open() call fails, |
| 843 | which is just fine (since it's only a cache). |
| 844 | XXX If the file exists and is writable but the directory is not |
| 845 | writable, the file will never be written. Oh well. |
| 846 | */ |
| 847 | int fd; |
| 848 | (void) unlink(filename); |
Tim Peters | 42c83af | 2000-09-29 04:03:10 +0000 | [diff] [blame] | 849 | fd = open(filename, O_EXCL|O_CREAT|O_WRONLY|O_TRUNC |
| 850 | #ifdef O_BINARY |
| 851 | |O_BINARY /* necessary for Windows */ |
| 852 | #endif |
Martin v. Löwis | 79acb9e | 2002-12-06 12:48:53 +0000 | [diff] [blame] | 853 | #ifdef __VMS |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 854 | , mode, "ctxt=bin", "shr=nil" |
Martin v. Löwis | 79acb9e | 2002-12-06 12:48:53 +0000 | [diff] [blame] | 855 | #else |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 856 | , mode |
Martin v. Löwis | 79acb9e | 2002-12-06 12:48:53 +0000 | [diff] [blame] | 857 | #endif |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 858 | ); |
Guido van Rossum | 55a8338 | 2000-09-20 20:31:38 +0000 | [diff] [blame] | 859 | if (fd < 0) |
| 860 | return NULL; |
| 861 | return fdopen(fd, "wb"); |
| 862 | #else |
| 863 | /* Best we can do -- on Windows this can't happen anyway */ |
| 864 | return fopen(filename, "wb"); |
| 865 | #endif |
| 866 | } |
| 867 | |
| 868 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 869 | /* Write a compiled module to a file, placing the time of last |
| 870 | modification of its source into the header. |
| 871 | Errors are ignored, if a write error occurs an attempt is made to |
| 872 | remove the file. */ |
| 873 | |
| 874 | static void |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 875 | write_compiled_module(PyCodeObject *co, char *cpathname, struct stat *srcstat) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 876 | { |
| 877 | FILE *fp; |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 878 | time_t mtime = srcstat->st_mtime; |
R. David Murray | 3310a10 | 2009-07-07 09:54:16 +0000 | [diff] [blame] | 879 | #ifdef MS_WINDOWS /* since Windows uses different permissions */ |
| 880 | mode_t mode = srcstat->st_mode & ~S_IEXEC; |
| 881 | #else |
R. David Murray | 23a736a | 2009-07-07 01:06:13 +0000 | [diff] [blame] | 882 | mode_t mode = srcstat->st_mode & ~S_IXUSR & ~S_IXGRP & ~S_IXOTH; |
| 883 | #endif |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 884 | |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 885 | fp = open_exclusive(cpathname, mode); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 886 | if (fp == NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 887 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 888 | PySys_WriteStderr( |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 889 | "# can't create %s\n", cpathname); |
| 890 | return; |
| 891 | } |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 892 | PyMarshal_WriteLongToFile(pyc_magic, fp, Py_MARSHAL_VERSION); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 893 | /* First write a 0 for mtime */ |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 894 | PyMarshal_WriteLongToFile(0L, fp, Py_MARSHAL_VERSION); |
| 895 | PyMarshal_WriteObjectToFile((PyObject *)co, fp, Py_MARSHAL_VERSION); |
Armin Rigo | 01ab279 | 2004-03-26 15:09:27 +0000 | [diff] [blame] | 896 | if (fflush(fp) != 0 || ferror(fp)) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 897 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 898 | PySys_WriteStderr("# can't write %s\n", cpathname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 899 | /* Don't keep partial file */ |
| 900 | fclose(fp); |
| 901 | (void) unlink(cpathname); |
| 902 | return; |
| 903 | } |
| 904 | /* Now write the true mtime */ |
| 905 | fseek(fp, 4L, 0); |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 906 | assert(mtime < LONG_MAX); |
Martin v. Löwis | 725507b | 2006-03-07 12:08:51 +0000 | [diff] [blame] | 907 | PyMarshal_WriteLongToFile((long)mtime, fp, Py_MARSHAL_VERSION); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 908 | fflush(fp); |
| 909 | fclose(fp); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 910 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 911 | PySys_WriteStderr("# wrote %s\n", cpathname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 912 | } |
| 913 | |
Antoine Pitrou | e96d4ea | 2009-01-06 18:10:47 +0000 | [diff] [blame] | 914 | static void |
| 915 | update_code_filenames(PyCodeObject *co, PyObject *oldname, PyObject *newname) |
| 916 | { |
| 917 | PyObject *constants, *tmp; |
| 918 | Py_ssize_t i, n; |
| 919 | |
| 920 | if (!_PyString_Eq(co->co_filename, oldname)) |
| 921 | return; |
| 922 | |
| 923 | tmp = co->co_filename; |
| 924 | co->co_filename = newname; |
| 925 | Py_INCREF(co->co_filename); |
| 926 | Py_DECREF(tmp); |
| 927 | |
| 928 | constants = co->co_consts; |
| 929 | n = PyTuple_GET_SIZE(constants); |
| 930 | for (i = 0; i < n; i++) { |
| 931 | tmp = PyTuple_GET_ITEM(constants, i); |
| 932 | if (PyCode_Check(tmp)) |
| 933 | update_code_filenames((PyCodeObject *)tmp, |
| 934 | oldname, newname); |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | static int |
| 939 | update_compiled_module(PyCodeObject *co, char *pathname) |
| 940 | { |
| 941 | PyObject *oldname, *newname; |
| 942 | |
| 943 | if (strcmp(PyString_AsString(co->co_filename), pathname) == 0) |
| 944 | return 0; |
| 945 | |
| 946 | newname = PyString_FromString(pathname); |
| 947 | if (newname == NULL) |
| 948 | return -1; |
| 949 | |
| 950 | oldname = co->co_filename; |
| 951 | Py_INCREF(oldname); |
| 952 | update_code_filenames(co, oldname, newname); |
| 953 | Py_DECREF(oldname); |
| 954 | Py_DECREF(newname); |
| 955 | return 1; |
| 956 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 957 | |
| 958 | /* Load a source module from a given file and return its module |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 959 | object WITH INCREMENTED REFERENCE COUNT. If there's a matching |
| 960 | byte-compiled file, use that instead. */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 961 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 962 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 963 | load_source_module(char *name, char *pathname, FILE *fp) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 964 | { |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 965 | struct stat st; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 966 | FILE *fpc; |
| 967 | char buf[MAXPATHLEN+1]; |
| 968 | char *cpathname; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 969 | PyCodeObject *co; |
| 970 | PyObject *m; |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 971 | |
| 972 | if (fstat(fileno(fp), &st) != 0) { |
Neal Norwitz | 708e51a | 2005-10-03 04:48:15 +0000 | [diff] [blame] | 973 | PyErr_Format(PyExc_RuntimeError, |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 974 | "unable to get file status from '%s'", |
Neal Norwitz | 708e51a | 2005-10-03 04:48:15 +0000 | [diff] [blame] | 975 | pathname); |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 976 | return NULL; |
Neal Norwitz | 708e51a | 2005-10-03 04:48:15 +0000 | [diff] [blame] | 977 | } |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 978 | #if SIZEOF_TIME_T > 4 |
| 979 | /* Python's .pyc timestamp handling presumes that the timestamp fits |
| 980 | in 4 bytes. This will be fine until sometime in the year 2038, |
| 981 | when a 4-byte signed time_t will overflow. |
| 982 | */ |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 983 | if (st.st_mtime >> 32) { |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 984 | PyErr_SetString(PyExc_OverflowError, |
Fred Drake | c63d3e9 | 2001-03-01 06:33:32 +0000 | [diff] [blame] | 985 | "modification time overflows a 4 byte field"); |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 986 | return NULL; |
| 987 | } |
| 988 | #endif |
Tim Peters | 36515e2 | 2001-11-18 04:06:29 +0000 | [diff] [blame] | 989 | cpathname = make_compiled_pathname(pathname, buf, |
Jeremy Hylton | 37832f0 | 2001-04-13 17:50:20 +0000 | [diff] [blame] | 990 | (size_t)MAXPATHLEN + 1); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 991 | if (cpathname != NULL && |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 992 | (fpc = check_compiled_module(pathname, st.st_mtime, cpathname))) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 993 | co = read_compiled_module(cpathname, fpc); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 994 | fclose(fpc); |
| 995 | if (co == NULL) |
| 996 | return NULL; |
Antoine Pitrou | e96d4ea | 2009-01-06 18:10:47 +0000 | [diff] [blame] | 997 | if (update_compiled_module(co, pathname) < 0) |
| 998 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 999 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 1000 | PySys_WriteStderr("import %s # precompiled from %s\n", |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1001 | name, cpathname); |
Guido van Rossum | afd3dae | 1998-08-25 18:44:34 +0000 | [diff] [blame] | 1002 | pathname = cpathname; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1003 | } |
| 1004 | else { |
| 1005 | co = parse_source_module(pathname, fp); |
| 1006 | if (co == NULL) |
| 1007 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1008 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 1009 | PySys_WriteStderr("import %s # from %s\n", |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1010 | name, pathname); |
Georg Brandl | 2da0fce | 2008-01-07 17:09:35 +0000 | [diff] [blame] | 1011 | if (cpathname) { |
| 1012 | PyObject *ro = PySys_GetObject("dont_write_bytecode"); |
| 1013 | if (ro == NULL || !PyObject_IsTrue(ro)) |
Christian Heimes | 4034685 | 2008-02-23 17:52:07 +0000 | [diff] [blame] | 1014 | write_compiled_module(co, cpathname, &st); |
Georg Brandl | 2da0fce | 2008-01-07 17:09:35 +0000 | [diff] [blame] | 1015 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1016 | } |
Guido van Rossum | afd3dae | 1998-08-25 18:44:34 +0000 | [diff] [blame] | 1017 | m = PyImport_ExecCodeModuleEx(name, (PyObject *)co, pathname); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1018 | Py_DECREF(co); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1019 | |
| 1020 | return m; |
| 1021 | } |
| 1022 | |
| 1023 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1024 | /* Forward */ |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1025 | static PyObject *load_module(char *, FILE *, char *, int, PyObject *); |
| 1026 | static struct filedescr *find_module(char *, char *, PyObject *, |
| 1027 | char *, size_t, FILE **, PyObject **); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 1028 | static struct _frozen *find_frozen(char *name); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1029 | |
| 1030 | /* Load a package and return its module object WITH INCREMENTED |
| 1031 | REFERENCE COUNT */ |
| 1032 | |
| 1033 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1034 | load_package(char *name, char *pathname) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1035 | { |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 1036 | PyObject *m, *d; |
| 1037 | PyObject *file = NULL; |
| 1038 | PyObject *path = NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1039 | int err; |
| 1040 | char buf[MAXPATHLEN+1]; |
| 1041 | FILE *fp = NULL; |
| 1042 | struct filedescr *fdp; |
| 1043 | |
| 1044 | m = PyImport_AddModule(name); |
| 1045 | if (m == NULL) |
| 1046 | return NULL; |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 1047 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 1048 | PySys_WriteStderr("import %s # directory %s\n", |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 1049 | name, pathname); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1050 | d = PyModule_GetDict(m); |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1051 | file = PyString_FromString(pathname); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1052 | if (file == NULL) |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 1053 | goto error; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1054 | path = Py_BuildValue("[O]", file); |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 1055 | if (path == NULL) |
| 1056 | goto error; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1057 | err = PyDict_SetItemString(d, "__file__", file); |
| 1058 | if (err == 0) |
| 1059 | err = PyDict_SetItemString(d, "__path__", path); |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 1060 | if (err != 0) |
| 1061 | goto error; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1062 | buf[0] = '\0'; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1063 | fdp = find_module(name, "__init__", path, buf, sizeof(buf), &fp, NULL); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1064 | if (fdp == NULL) { |
| 1065 | if (PyErr_ExceptionMatches(PyExc_ImportError)) { |
| 1066 | PyErr_Clear(); |
Thomas Heller | 2565324 | 2004-06-07 15:04:10 +0000 | [diff] [blame] | 1067 | Py_INCREF(m); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1068 | } |
| 1069 | else |
| 1070 | m = NULL; |
| 1071 | goto cleanup; |
| 1072 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1073 | m = load_module(name, fp, buf, fdp->type, NULL); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1074 | if (fp != NULL) |
| 1075 | fclose(fp); |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 1076 | goto cleanup; |
| 1077 | |
| 1078 | error: |
| 1079 | m = NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1080 | cleanup: |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1081 | Py_XDECREF(path); |
| 1082 | Py_XDECREF(file); |
| 1083 | return m; |
| 1084 | } |
| 1085 | |
| 1086 | |
| 1087 | /* Helper to test for built-in module */ |
| 1088 | |
| 1089 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1090 | is_builtin(char *name) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1091 | { |
| 1092 | int i; |
Guido van Rossum | 771c6c8 | 1997-10-31 18:37:24 +0000 | [diff] [blame] | 1093 | for (i = 0; PyImport_Inittab[i].name != NULL; i++) { |
| 1094 | if (strcmp(name, PyImport_Inittab[i].name) == 0) { |
| 1095 | if (PyImport_Inittab[i].initfunc == NULL) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1096 | return -1; |
| 1097 | else |
| 1098 | return 1; |
| 1099 | } |
| 1100 | } |
| 1101 | return 0; |
| 1102 | } |
| 1103 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1104 | |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1105 | /* Return an importer object for a sys.path/pkg.__path__ item 'p', |
| 1106 | possibly by fetching it from the path_importer_cache dict. If it |
Brett Cannon | 94b69f6 | 2006-09-28 22:10:14 +0000 | [diff] [blame] | 1107 | wasn't yet cached, traverse path_hooks until a hook is found |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1108 | that can handle the path item. Return None if no hook could; |
| 1109 | this tells our caller it should fall back to the builtin |
| 1110 | import mechanism. Cache the result in path_importer_cache. |
| 1111 | Returns a borrowed reference. */ |
| 1112 | |
| 1113 | static PyObject * |
| 1114 | get_path_importer(PyObject *path_importer_cache, PyObject *path_hooks, |
| 1115 | PyObject *p) |
| 1116 | { |
| 1117 | PyObject *importer; |
Martin v. Löwis | 725507b | 2006-03-07 12:08:51 +0000 | [diff] [blame] | 1118 | Py_ssize_t j, nhooks; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1119 | |
| 1120 | /* These conditions are the caller's responsibility: */ |
| 1121 | assert(PyList_Check(path_hooks)); |
| 1122 | assert(PyDict_Check(path_importer_cache)); |
| 1123 | |
| 1124 | nhooks = PyList_Size(path_hooks); |
| 1125 | if (nhooks < 0) |
| 1126 | return NULL; /* Shouldn't happen */ |
| 1127 | |
| 1128 | importer = PyDict_GetItem(path_importer_cache, p); |
| 1129 | if (importer != NULL) |
| 1130 | return importer; |
| 1131 | |
| 1132 | /* set path_importer_cache[p] to None to avoid recursion */ |
| 1133 | if (PyDict_SetItem(path_importer_cache, p, Py_None) != 0) |
| 1134 | return NULL; |
| 1135 | |
| 1136 | for (j = 0; j < nhooks; j++) { |
| 1137 | PyObject *hook = PyList_GetItem(path_hooks, j); |
| 1138 | if (hook == NULL) |
| 1139 | return NULL; |
Georg Brandl | 684fd0c | 2006-05-25 19:15:31 +0000 | [diff] [blame] | 1140 | importer = PyObject_CallFunctionObjArgs(hook, p, NULL); |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1141 | if (importer != NULL) |
| 1142 | break; |
| 1143 | |
| 1144 | if (!PyErr_ExceptionMatches(PyExc_ImportError)) { |
| 1145 | return NULL; |
| 1146 | } |
| 1147 | PyErr_Clear(); |
| 1148 | } |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 1149 | if (importer == NULL) { |
| 1150 | importer = PyObject_CallFunctionObjArgs( |
Nick Coghlan | 327a39b | 2007-11-18 11:56:28 +0000 | [diff] [blame] | 1151 | (PyObject *)&PyNullImporter_Type, p, NULL |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 1152 | ); |
| 1153 | if (importer == NULL) { |
| 1154 | if (PyErr_ExceptionMatches(PyExc_ImportError)) { |
| 1155 | PyErr_Clear(); |
| 1156 | return Py_None; |
| 1157 | } |
| 1158 | } |
| 1159 | } |
| 1160 | if (importer != NULL) { |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1161 | int err = PyDict_SetItem(path_importer_cache, p, importer); |
| 1162 | Py_DECREF(importer); |
| 1163 | if (err != 0) |
| 1164 | return NULL; |
| 1165 | } |
| 1166 | return importer; |
| 1167 | } |
| 1168 | |
Nick Coghlan | 327a39b | 2007-11-18 11:56:28 +0000 | [diff] [blame] | 1169 | PyAPI_FUNC(PyObject *) |
| 1170 | PyImport_GetImporter(PyObject *path) { |
| 1171 | PyObject *importer=NULL, *path_importer_cache=NULL, *path_hooks=NULL; |
| 1172 | |
| 1173 | if ((path_importer_cache = PySys_GetObject("path_importer_cache"))) { |
| 1174 | if ((path_hooks = PySys_GetObject("path_hooks"))) { |
| 1175 | importer = get_path_importer(path_importer_cache, |
| 1176 | path_hooks, path); |
| 1177 | } |
| 1178 | } |
| 1179 | Py_XINCREF(importer); /* get_path_importer returns a borrowed reference */ |
| 1180 | return importer; |
| 1181 | } |
| 1182 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1183 | /* Search the path (default sys.path) for a module. Return the |
| 1184 | corresponding filedescr struct, and (via return arguments) the |
| 1185 | pathname and an open file. Return NULL if the module is not found. */ |
| 1186 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1187 | #ifdef MS_COREDLL |
Thomas Wouters | b4bd21c | 2000-07-22 23:38:01 +0000 | [diff] [blame] | 1188 | extern FILE *PyWin_FindRegisteredModule(const char *, struct filedescr **, |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1189 | char *, Py_ssize_t); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1190 | #endif |
| 1191 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1192 | static int case_ok(char *, Py_ssize_t, Py_ssize_t, char *); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 1193 | static int find_init_module(char *); /* Forward */ |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1194 | static struct filedescr importhookdescr = {"", "", IMP_HOOK}; |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1195 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1196 | static struct filedescr * |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1197 | find_module(char *fullname, char *subname, PyObject *path, char *buf, |
| 1198 | size_t buflen, FILE **p_fp, PyObject **p_loader) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1199 | { |
Martin v. Löwis | 725507b | 2006-03-07 12:08:51 +0000 | [diff] [blame] | 1200 | Py_ssize_t i, npath; |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 1201 | size_t len, namelen; |
Guido van Rossum | 80bb965 | 1996-12-05 23:27:02 +0000 | [diff] [blame] | 1202 | struct filedescr *fdp = NULL; |
Jack Jansen | c88da1f | 2002-05-28 10:58:19 +0000 | [diff] [blame] | 1203 | char *filemode; |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1204 | FILE *fp = NULL; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1205 | PyObject *path_hooks, *path_importer_cache; |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 1206 | #ifndef RISCOS |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1207 | struct stat statbuf; |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 1208 | #endif |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1209 | static struct filedescr fd_frozen = {"", "", PY_FROZEN}; |
| 1210 | static struct filedescr fd_builtin = {"", "", C_BUILTIN}; |
| 1211 | static struct filedescr fd_package = {"", "", PKG_DIRECTORY}; |
Guido van Rossum | 0506a43 | 1998-08-11 15:07:39 +0000 | [diff] [blame] | 1212 | char name[MAXPATHLEN+1]; |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1213 | #if defined(PYOS_OS2) |
| 1214 | size_t saved_len; |
| 1215 | size_t saved_namelen; |
| 1216 | char *saved_buf = NULL; |
| 1217 | #endif |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1218 | if (p_loader != NULL) |
| 1219 | *p_loader = NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1220 | |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1221 | if (strlen(subname) > MAXPATHLEN) { |
Guido van Rossum | 8f4d331 | 2001-10-18 18:54:11 +0000 | [diff] [blame] | 1222 | PyErr_SetString(PyExc_OverflowError, |
| 1223 | "module name is too long"); |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 1224 | return NULL; |
| 1225 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1226 | strcpy(name, subname); |
| 1227 | |
| 1228 | /* sys.meta_path import hook */ |
| 1229 | if (p_loader != NULL) { |
| 1230 | PyObject *meta_path; |
| 1231 | |
| 1232 | meta_path = PySys_GetObject("meta_path"); |
| 1233 | if (meta_path == NULL || !PyList_Check(meta_path)) { |
| 1234 | PyErr_SetString(PyExc_ImportError, |
| 1235 | "sys.meta_path must be a list of " |
| 1236 | "import hooks"); |
| 1237 | return NULL; |
| 1238 | } |
| 1239 | Py_INCREF(meta_path); /* zap guard */ |
| 1240 | npath = PyList_Size(meta_path); |
| 1241 | for (i = 0; i < npath; i++) { |
| 1242 | PyObject *loader; |
| 1243 | PyObject *hook = PyList_GetItem(meta_path, i); |
| 1244 | loader = PyObject_CallMethod(hook, "find_module", |
| 1245 | "sO", fullname, |
| 1246 | path != NULL ? |
| 1247 | path : Py_None); |
| 1248 | if (loader == NULL) { |
| 1249 | Py_DECREF(meta_path); |
| 1250 | return NULL; /* true error */ |
| 1251 | } |
| 1252 | if (loader != Py_None) { |
| 1253 | /* a loader was found */ |
| 1254 | *p_loader = loader; |
| 1255 | Py_DECREF(meta_path); |
| 1256 | return &importhookdescr; |
| 1257 | } |
| 1258 | Py_DECREF(loader); |
| 1259 | } |
| 1260 | Py_DECREF(meta_path); |
| 1261 | } |
Guido van Rossum | 0506a43 | 1998-08-11 15:07:39 +0000 | [diff] [blame] | 1262 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1263 | if (path != NULL && PyString_Check(path)) { |
Guido van Rossum | 8f4d331 | 2001-10-18 18:54:11 +0000 | [diff] [blame] | 1264 | /* The only type of submodule allowed inside a "frozen" |
| 1265 | package are other frozen modules or packages. */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1266 | if (PyString_Size(path) + 1 + strlen(name) >= (size_t)buflen) { |
Guido van Rossum | 0506a43 | 1998-08-11 15:07:39 +0000 | [diff] [blame] | 1267 | PyErr_SetString(PyExc_ImportError, |
| 1268 | "full frozen module name too long"); |
| 1269 | return NULL; |
| 1270 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1271 | strcpy(buf, PyString_AsString(path)); |
Guido van Rossum | 0506a43 | 1998-08-11 15:07:39 +0000 | [diff] [blame] | 1272 | strcat(buf, "."); |
| 1273 | strcat(buf, name); |
| 1274 | strcpy(name, buf); |
Guido van Rossum | 8f4d331 | 2001-10-18 18:54:11 +0000 | [diff] [blame] | 1275 | if (find_frozen(name) != NULL) { |
| 1276 | strcpy(buf, name); |
| 1277 | return &fd_frozen; |
| 1278 | } |
| 1279 | PyErr_Format(PyExc_ImportError, |
| 1280 | "No frozen submodule named %.200s", name); |
| 1281 | return NULL; |
Guido van Rossum | 0506a43 | 1998-08-11 15:07:39 +0000 | [diff] [blame] | 1282 | } |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1283 | if (path == NULL) { |
| 1284 | if (is_builtin(name)) { |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1285 | strcpy(buf, name); |
| 1286 | return &fd_builtin; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1287 | } |
Greg Ward | 201baee | 2001-10-04 14:52:06 +0000 | [diff] [blame] | 1288 | if ((find_frozen(name)) != NULL) { |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1289 | strcpy(buf, name); |
| 1290 | return &fd_frozen; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1291 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1292 | |
Guido van Rossum | ac27910 | 1996-08-22 23:10:58 +0000 | [diff] [blame] | 1293 | #ifdef MS_COREDLL |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1294 | fp = PyWin_FindRegisteredModule(name, &fdp, buf, buflen); |
| 1295 | if (fp != NULL) { |
| 1296 | *p_fp = fp; |
| 1297 | return fdp; |
| 1298 | } |
Guido van Rossum | a5a3db7 | 1996-04-09 02:39:59 +0000 | [diff] [blame] | 1299 | #endif |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1300 | path = PySys_GetObject("path"); |
| 1301 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1302 | if (path == NULL || !PyList_Check(path)) { |
| 1303 | PyErr_SetString(PyExc_ImportError, |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1304 | "sys.path must be a list of directory names"); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1305 | return NULL; |
| 1306 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1307 | |
| 1308 | path_hooks = PySys_GetObject("path_hooks"); |
| 1309 | if (path_hooks == NULL || !PyList_Check(path_hooks)) { |
| 1310 | PyErr_SetString(PyExc_ImportError, |
| 1311 | "sys.path_hooks must be a list of " |
| 1312 | "import hooks"); |
| 1313 | return NULL; |
| 1314 | } |
| 1315 | path_importer_cache = PySys_GetObject("path_importer_cache"); |
| 1316 | if (path_importer_cache == NULL || |
| 1317 | !PyDict_Check(path_importer_cache)) { |
| 1318 | PyErr_SetString(PyExc_ImportError, |
| 1319 | "sys.path_importer_cache must be a dict"); |
| 1320 | return NULL; |
| 1321 | } |
| 1322 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1323 | npath = PyList_Size(path); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1324 | namelen = strlen(name); |
| 1325 | for (i = 0; i < npath; i++) { |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1326 | PyObject *copy = NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1327 | PyObject *v = PyList_GetItem(path, i); |
Neal Norwitz | 3cb31ac | 2006-08-13 18:10:47 +0000 | [diff] [blame] | 1328 | if (!v) |
| 1329 | return NULL; |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1330 | #ifdef Py_USING_UNICODE |
| 1331 | if (PyUnicode_Check(v)) { |
| 1332 | copy = PyUnicode_Encode(PyUnicode_AS_UNICODE(v), |
| 1333 | PyUnicode_GET_SIZE(v), Py_FileSystemDefaultEncoding, NULL); |
| 1334 | if (copy == NULL) |
| 1335 | return NULL; |
| 1336 | v = copy; |
| 1337 | } |
| 1338 | else |
| 1339 | #endif |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1340 | if (!PyString_Check(v)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1341 | continue; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1342 | len = PyString_GET_SIZE(v); |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1343 | if (len + 2 + namelen + MAXSUFFIXSIZE >= buflen) { |
| 1344 | Py_XDECREF(copy); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1345 | continue; /* Too long */ |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1346 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1347 | strcpy(buf, PyString_AS_STRING(v)); |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1348 | if (strlen(buf) != len) { |
| 1349 | Py_XDECREF(copy); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1350 | continue; /* v contains '\0' */ |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1351 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1352 | |
| 1353 | /* sys.path_hooks import hook */ |
| 1354 | if (p_loader != NULL) { |
| 1355 | PyObject *importer; |
| 1356 | |
| 1357 | importer = get_path_importer(path_importer_cache, |
| 1358 | path_hooks, v); |
Neal Norwitz | a4df11d | 2006-07-06 04:28:59 +0000 | [diff] [blame] | 1359 | if (importer == NULL) { |
| 1360 | Py_XDECREF(copy); |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1361 | return NULL; |
Neal Norwitz | a4df11d | 2006-07-06 04:28:59 +0000 | [diff] [blame] | 1362 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1363 | /* Note: importer is a borrowed reference */ |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 1364 | if (importer != Py_None) { |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1365 | PyObject *loader; |
| 1366 | loader = PyObject_CallMethod(importer, |
| 1367 | "find_module", |
| 1368 | "s", fullname); |
Neal Norwitz | a4df11d | 2006-07-06 04:28:59 +0000 | [diff] [blame] | 1369 | Py_XDECREF(copy); |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1370 | if (loader == NULL) |
| 1371 | return NULL; /* error */ |
| 1372 | if (loader != Py_None) { |
| 1373 | /* a loader was found */ |
| 1374 | *p_loader = loader; |
| 1375 | return &importhookdescr; |
| 1376 | } |
| 1377 | Py_DECREF(loader); |
Georg Brandl | f4ef116 | 2006-05-26 18:03:31 +0000 | [diff] [blame] | 1378 | continue; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1379 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1380 | } |
Georg Brandl | f4ef116 | 2006-05-26 18:03:31 +0000 | [diff] [blame] | 1381 | /* no hook was found, use builtin import */ |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1382 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1383 | if (len > 0 && buf[len-1] != SEP |
| 1384 | #ifdef ALTSEP |
| 1385 | && buf[len-1] != ALTSEP |
| 1386 | #endif |
| 1387 | ) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1388 | buf[len++] = SEP; |
Guido van Rossum | 215c340 | 2000-11-13 17:26:32 +0000 | [diff] [blame] | 1389 | strcpy(buf+len, name); |
| 1390 | len += namelen; |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1391 | |
| 1392 | /* Check for package import (buf holds a directory name, |
| 1393 | and there's an __init__ module in that directory */ |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1394 | #ifdef HAVE_STAT |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1395 | if (stat(buf, &statbuf) == 0 && /* it exists */ |
| 1396 | S_ISDIR(statbuf.st_mode) && /* it's a directory */ |
Thomas Wouters | 9df4e6f | 2006-04-27 23:13:20 +0000 | [diff] [blame] | 1397 | case_ok(buf, len, namelen, name)) { /* case matches */ |
| 1398 | if (find_init_module(buf)) { /* and has __init__.py */ |
| 1399 | Py_XDECREF(copy); |
| 1400 | return &fd_package; |
| 1401 | } |
| 1402 | else { |
| 1403 | char warnstr[MAXPATHLEN+80]; |
| 1404 | sprintf(warnstr, "Not importing directory " |
| 1405 | "'%.*s': missing __init__.py", |
| 1406 | MAXPATHLEN, buf); |
| 1407 | if (PyErr_Warn(PyExc_ImportWarning, |
| 1408 | warnstr)) { |
| 1409 | Py_XDECREF(copy); |
| 1410 | return NULL; |
| 1411 | } |
| 1412 | } |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1413 | } |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1414 | #else |
| 1415 | /* XXX How are you going to test for directories? */ |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 1416 | #ifdef RISCOS |
Guido van Rossum | e2ae77b | 2001-10-24 20:42:55 +0000 | [diff] [blame] | 1417 | if (isdir(buf) && |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1418 | case_ok(buf, len, namelen, name)) { |
Thomas Wouters | 9df4e6f | 2006-04-27 23:13:20 +0000 | [diff] [blame] | 1419 | if (find_init_module(buf)) { |
| 1420 | Py_XDECREF(copy); |
| 1421 | return &fd_package; |
| 1422 | } |
| 1423 | else { |
| 1424 | char warnstr[MAXPATHLEN+80]; |
| 1425 | sprintf(warnstr, "Not importing directory " |
| 1426 | "'%.*s': missing __init__.py", |
| 1427 | MAXPATHLEN, buf); |
| 1428 | if (PyErr_Warn(PyExc_ImportWarning, |
| 1429 | warnstr)) { |
| 1430 | Py_XDECREF(copy); |
| 1431 | return NULL; |
| 1432 | } |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1433 | } |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 1434 | #endif |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1435 | #endif |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1436 | #if defined(PYOS_OS2) |
| 1437 | /* take a snapshot of the module spec for restoration |
| 1438 | * after the 8 character DLL hackery |
| 1439 | */ |
| 1440 | saved_buf = strdup(buf); |
| 1441 | saved_len = len; |
| 1442 | saved_namelen = namelen; |
| 1443 | #endif /* PYOS_OS2 */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1444 | for (fdp = _PyImport_Filetab; fdp->suffix != NULL; fdp++) { |
Georg Brandl | add36e5 | 2007-08-23 18:08:06 +0000 | [diff] [blame] | 1445 | #if defined(PYOS_OS2) && defined(HAVE_DYNAMIC_LOADING) |
Jeremy Hylton | 4ae6fae | 2002-05-30 17:15:25 +0000 | [diff] [blame] | 1446 | /* OS/2 limits DLLs to 8 character names (w/o |
| 1447 | extension) |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1448 | * so if the name is longer than that and its a |
| 1449 | * dynamically loaded module we're going to try, |
| 1450 | * truncate the name before trying |
| 1451 | */ |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1452 | if (strlen(subname) > 8) { |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1453 | /* is this an attempt to load a C extension? */ |
Jeremy Hylton | 4ae6fae | 2002-05-30 17:15:25 +0000 | [diff] [blame] | 1454 | const struct filedescr *scan; |
| 1455 | scan = _PyImport_DynLoadFiletab; |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1456 | while (scan->suffix != NULL) { |
Jeremy Hylton | 4ae6fae | 2002-05-30 17:15:25 +0000 | [diff] [blame] | 1457 | if (!strcmp(scan->suffix, fdp->suffix)) |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1458 | break; |
| 1459 | else |
| 1460 | scan++; |
| 1461 | } |
| 1462 | if (scan->suffix != NULL) { |
| 1463 | /* yes, so truncate the name */ |
| 1464 | namelen = 8; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1465 | len -= strlen(subname) - namelen; |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1466 | buf[len] = '\0'; |
| 1467 | } |
| 1468 | } |
| 1469 | #endif /* PYOS_OS2 */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1470 | strcpy(buf+len, fdp->suffix); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1471 | if (Py_VerboseFlag > 1) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 1472 | PySys_WriteStderr("# trying %s\n", buf); |
Jack Jansen | c88da1f | 2002-05-28 10:58:19 +0000 | [diff] [blame] | 1473 | filemode = fdp->mode; |
Tim Peters | 86c7d2f | 2004-08-01 23:24:21 +0000 | [diff] [blame] | 1474 | if (filemode[0] == 'U') |
Jeremy Hylton | 4ae6fae | 2002-05-30 17:15:25 +0000 | [diff] [blame] | 1475 | filemode = "r" PY_STDIOTEXTMODE; |
Jack Jansen | c88da1f | 2002-05-28 10:58:19 +0000 | [diff] [blame] | 1476 | fp = fopen(buf, filemode); |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1477 | if (fp != NULL) { |
| 1478 | if (case_ok(buf, len, namelen, name)) |
| 1479 | break; |
| 1480 | else { /* continue search */ |
| 1481 | fclose(fp); |
| 1482 | fp = NULL; |
Barry Warsaw | 914a0b1 | 2001-02-02 19:12:16 +0000 | [diff] [blame] | 1483 | } |
Barry Warsaw | 914a0b1 | 2001-02-02 19:12:16 +0000 | [diff] [blame] | 1484 | } |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1485 | #if defined(PYOS_OS2) |
| 1486 | /* restore the saved snapshot */ |
| 1487 | strcpy(buf, saved_buf); |
| 1488 | len = saved_len; |
| 1489 | namelen = saved_namelen; |
| 1490 | #endif |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1491 | } |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1492 | #if defined(PYOS_OS2) |
| 1493 | /* don't need/want the module name snapshot anymore */ |
| 1494 | if (saved_buf) |
| 1495 | { |
| 1496 | free(saved_buf); |
| 1497 | saved_buf = NULL; |
| 1498 | } |
| 1499 | #endif |
Walter Dörwald | 3430d70 | 2002-06-17 10:43:59 +0000 | [diff] [blame] | 1500 | Py_XDECREF(copy); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1501 | if (fp != NULL) |
| 1502 | break; |
| 1503 | } |
| 1504 | if (fp == NULL) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1505 | PyErr_Format(PyExc_ImportError, |
| 1506 | "No module named %.200s", name); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1507 | return NULL; |
| 1508 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1509 | *p_fp = fp; |
| 1510 | return fdp; |
| 1511 | } |
| 1512 | |
Raymond Hettinger | db29e0f | 2004-10-07 06:46:25 +0000 | [diff] [blame] | 1513 | /* Helpers for main.c |
| 1514 | * Find the source file corresponding to a named module |
| 1515 | */ |
| 1516 | struct filedescr * |
| 1517 | _PyImport_FindModule(const char *name, PyObject *path, char *buf, |
| 1518 | size_t buflen, FILE **p_fp, PyObject **p_loader) |
| 1519 | { |
| 1520 | return find_module((char *) name, (char *) name, path, |
| 1521 | buf, buflen, p_fp, p_loader); |
| 1522 | } |
| 1523 | |
| 1524 | PyAPI_FUNC(int) _PyImport_IsScript(struct filedescr * fd) |
| 1525 | { |
| 1526 | return fd->type == PY_SOURCE || fd->type == PY_COMPILED; |
| 1527 | } |
| 1528 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1529 | /* case_ok(char* buf, Py_ssize_t len, Py_ssize_t namelen, char* name) |
Tim Peters | d1e87a8 | 2001-03-01 18:12:00 +0000 | [diff] [blame] | 1530 | * The arguments here are tricky, best shown by example: |
| 1531 | * /a/b/c/d/e/f/g/h/i/j/k/some_long_module_name.py\0 |
| 1532 | * ^ ^ ^ ^ |
| 1533 | * |--------------------- buf ---------------------| |
| 1534 | * |------------------- len ------------------| |
| 1535 | * |------ name -------| |
| 1536 | * |----- namelen -----| |
| 1537 | * buf is the full path, but len only counts up to (& exclusive of) the |
| 1538 | * extension. name is the module name, also exclusive of extension. |
| 1539 | * |
| 1540 | * We've already done a successful stat() or fopen() on buf, so know that |
| 1541 | * there's some match, possibly case-insensitive. |
| 1542 | * |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1543 | * case_ok() is to return 1 if there's a case-sensitive match for |
| 1544 | * name, else 0. case_ok() is also to return 1 if envar PYTHONCASEOK |
| 1545 | * exists. |
Tim Peters | d1e87a8 | 2001-03-01 18:12:00 +0000 | [diff] [blame] | 1546 | * |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1547 | * case_ok() is used to implement case-sensitive import semantics even |
| 1548 | * on platforms with case-insensitive filesystems. It's trivial to implement |
| 1549 | * for case-sensitive filesystems. It's pretty much a cross-platform |
| 1550 | * nightmare for systems with case-insensitive filesystems. |
| 1551 | */ |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1552 | |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1553 | /* First we may need a pile of platform-specific header files; the sequence |
| 1554 | * of #if's here should match the sequence in the body of case_ok(). |
| 1555 | */ |
Jason Tishler | 7961aa6 | 2005-05-20 00:56:54 +0000 | [diff] [blame] | 1556 | #if defined(MS_WINDOWS) |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1557 | #include <windows.h> |
Guido van Rossum | 4c3f57c | 2001-01-10 20:40:46 +0000 | [diff] [blame] | 1558 | |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1559 | #elif defined(DJGPP) |
| 1560 | #include <dir.h> |
| 1561 | |
Jason Tishler | 7961aa6 | 2005-05-20 00:56:54 +0000 | [diff] [blame] | 1562 | #elif (defined(__MACH__) && defined(__APPLE__) || defined(__CYGWIN__)) && defined(HAVE_DIRENT_H) |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1563 | #include <sys/types.h> |
| 1564 | #include <dirent.h> |
| 1565 | |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1566 | #elif defined(PYOS_OS2) |
| 1567 | #define INCL_DOS |
| 1568 | #define INCL_DOSERRORS |
| 1569 | #define INCL_NOPMAPI |
| 1570 | #include <os2.h> |
| 1571 | |
Guido van Rossum | e2ae77b | 2001-10-24 20:42:55 +0000 | [diff] [blame] | 1572 | #elif defined(RISCOS) |
| 1573 | #include "oslib/osfscontrol.h" |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1574 | #endif |
| 1575 | |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1576 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1577 | case_ok(char *buf, Py_ssize_t len, Py_ssize_t namelen, char *name) |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1578 | { |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1579 | /* Pick a platform-specific implementation; the sequence of #if's here should |
| 1580 | * match the sequence just above. |
| 1581 | */ |
| 1582 | |
Jason Tishler | 7961aa6 | 2005-05-20 00:56:54 +0000 | [diff] [blame] | 1583 | /* MS_WINDOWS */ |
| 1584 | #if defined(MS_WINDOWS) |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1585 | WIN32_FIND_DATA data; |
| 1586 | HANDLE h; |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1587 | |
Neil Schemenauer | 7d4bb9f | 2001-07-23 16:30:27 +0000 | [diff] [blame] | 1588 | if (Py_GETENV("PYTHONCASEOK") != NULL) |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1589 | return 1; |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1590 | |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1591 | h = FindFirstFile(buf, &data); |
| 1592 | if (h == INVALID_HANDLE_VALUE) { |
| 1593 | PyErr_Format(PyExc_NameError, |
| 1594 | "Can't find file for module %.100s\n(filename %.300s)", |
| 1595 | name, buf); |
| 1596 | return 0; |
| 1597 | } |
| 1598 | FindClose(h); |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1599 | return strncmp(data.cFileName, name, namelen) == 0; |
| 1600 | |
| 1601 | /* DJGPP */ |
| 1602 | #elif defined(DJGPP) |
| 1603 | struct ffblk ffblk; |
| 1604 | int done; |
| 1605 | |
Neil Schemenauer | 7d4bb9f | 2001-07-23 16:30:27 +0000 | [diff] [blame] | 1606 | if (Py_GETENV("PYTHONCASEOK") != NULL) |
Guido van Rossum | 323bf5e | 1998-06-24 03:54:06 +0000 | [diff] [blame] | 1607 | return 1; |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1608 | |
| 1609 | done = findfirst(buf, &ffblk, FA_ARCH|FA_RDONLY|FA_HIDDEN|FA_DIREC); |
| 1610 | if (done) { |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1611 | PyErr_Format(PyExc_NameError, |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1612 | "Can't find file for module %.100s\n(filename %.300s)", |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1613 | name, buf); |
| 1614 | return 0; |
| 1615 | } |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1616 | return strncmp(ffblk.ff_name, name, namelen) == 0; |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1617 | |
Jason Tishler | 7961aa6 | 2005-05-20 00:56:54 +0000 | [diff] [blame] | 1618 | /* new-fangled macintosh (macosx) or Cygwin */ |
| 1619 | #elif (defined(__MACH__) && defined(__APPLE__) || defined(__CYGWIN__)) && defined(HAVE_DIRENT_H) |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1620 | DIR *dirp; |
| 1621 | struct dirent *dp; |
Tim Peters | d1e87a8 | 2001-03-01 18:12:00 +0000 | [diff] [blame] | 1622 | char dirname[MAXPATHLEN + 1]; |
| 1623 | const int dirlen = len - namelen - 1; /* don't want trailing SEP */ |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1624 | |
Neil Schemenauer | 7d4bb9f | 2001-07-23 16:30:27 +0000 | [diff] [blame] | 1625 | if (Py_GETENV("PYTHONCASEOK") != NULL) |
Tim Peters | dbe6ebb | 2001-03-01 08:47:29 +0000 | [diff] [blame] | 1626 | return 1; |
| 1627 | |
Tim Peters | d1e87a8 | 2001-03-01 18:12:00 +0000 | [diff] [blame] | 1628 | /* Copy the dir component into dirname; substitute "." if empty */ |
| 1629 | if (dirlen <= 0) { |
| 1630 | dirname[0] = '.'; |
| 1631 | dirname[1] = '\0'; |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1632 | } |
| 1633 | else { |
Tim Peters | d1e87a8 | 2001-03-01 18:12:00 +0000 | [diff] [blame] | 1634 | assert(dirlen <= MAXPATHLEN); |
| 1635 | memcpy(dirname, buf, dirlen); |
| 1636 | dirname[dirlen] = '\0'; |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1637 | } |
| 1638 | /* Open the directory and search the entries for an exact match. */ |
Tim Peters | d1e87a8 | 2001-03-01 18:12:00 +0000 | [diff] [blame] | 1639 | dirp = opendir(dirname); |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1640 | if (dirp) { |
Tim Peters | 677898a | 2001-03-02 03:28:03 +0000 | [diff] [blame] | 1641 | char *nameWithExt = buf + len - namelen; |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1642 | while ((dp = readdir(dirp)) != NULL) { |
Tim Peters | dbe6ebb | 2001-03-01 08:47:29 +0000 | [diff] [blame] | 1643 | const int thislen = |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1644 | #ifdef _DIRENT_HAVE_D_NAMELEN |
Tim Peters | dbe6ebb | 2001-03-01 08:47:29 +0000 | [diff] [blame] | 1645 | dp->d_namlen; |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1646 | #else |
Tim Peters | dbe6ebb | 2001-03-01 08:47:29 +0000 | [diff] [blame] | 1647 | strlen(dp->d_name); |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1648 | #endif |
Tim Peters | d1e87a8 | 2001-03-01 18:12:00 +0000 | [diff] [blame] | 1649 | if (thislen >= namelen && |
Tim Peters | 677898a | 2001-03-02 03:28:03 +0000 | [diff] [blame] | 1650 | strcmp(dp->d_name, nameWithExt) == 0) { |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1651 | (void)closedir(dirp); |
| 1652 | return 1; /* Found */ |
| 1653 | } |
| 1654 | } |
Tim Peters | dbe6ebb | 2001-03-01 08:47:29 +0000 | [diff] [blame] | 1655 | (void)closedir(dirp); |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1656 | } |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1657 | return 0 ; /* Not found */ |
Tim Peters | 430f5d4 | 2001-03-01 01:30:56 +0000 | [diff] [blame] | 1658 | |
Guido van Rossum | e2ae77b | 2001-10-24 20:42:55 +0000 | [diff] [blame] | 1659 | /* RISC OS */ |
| 1660 | #elif defined(RISCOS) |
| 1661 | char canon[MAXPATHLEN+1]; /* buffer for the canonical form of the path */ |
| 1662 | char buf2[MAXPATHLEN+2]; |
| 1663 | char *nameWithExt = buf+len-namelen; |
| 1664 | int canonlen; |
| 1665 | os_error *e; |
| 1666 | |
| 1667 | if (Py_GETENV("PYTHONCASEOK") != NULL) |
| 1668 | return 1; |
| 1669 | |
| 1670 | /* workaround: |
| 1671 | append wildcard, otherwise case of filename wouldn't be touched */ |
| 1672 | strcpy(buf2, buf); |
| 1673 | strcat(buf2, "*"); |
| 1674 | |
| 1675 | e = xosfscontrol_canonicalise_path(buf2,canon,0,0,MAXPATHLEN+1,&canonlen); |
| 1676 | canonlen = MAXPATHLEN+1-canonlen; |
| 1677 | if (e || canonlen<=0 || canonlen>(MAXPATHLEN+1) ) |
| 1678 | return 0; |
| 1679 | if (strcmp(nameWithExt, canon+canonlen-strlen(nameWithExt))==0) |
| 1680 | return 1; /* match */ |
| 1681 | |
| 1682 | return 0; |
| 1683 | |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1684 | /* OS/2 */ |
| 1685 | #elif defined(PYOS_OS2) |
| 1686 | HDIR hdir = 1; |
| 1687 | ULONG srchcnt = 1; |
| 1688 | FILEFINDBUF3 ffbuf; |
| 1689 | APIRET rc; |
| 1690 | |
Georg Brandl | aed6c66 | 2008-01-07 17:25:53 +0000 | [diff] [blame] | 1691 | if (Py_GETENV("PYTHONCASEOK") != NULL) |
Andrew MacIntyre | d940054 | 2002-02-26 11:41:34 +0000 | [diff] [blame] | 1692 | return 1; |
| 1693 | |
| 1694 | rc = DosFindFirst(buf, |
| 1695 | &hdir, |
| 1696 | FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM | FILE_DIRECTORY, |
| 1697 | &ffbuf, sizeof(ffbuf), |
| 1698 | &srchcnt, |
| 1699 | FIL_STANDARD); |
| 1700 | if (rc != NO_ERROR) |
| 1701 | return 0; |
| 1702 | return strncmp(ffbuf.achName, name, namelen) == 0; |
| 1703 | |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1704 | /* assuming it's a case-sensitive filesystem, so there's nothing to do! */ |
| 1705 | #else |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1706 | return 1; |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1707 | |
Guido van Rossum | 4d1b3b9 | 1998-02-13 23:27:59 +0000 | [diff] [blame] | 1708 | #endif |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 1709 | } |
Guido van Rossum | 4d1b3b9 | 1998-02-13 23:27:59 +0000 | [diff] [blame] | 1710 | |
Guido van Rossum | 0980bd9 | 1998-02-13 17:18:36 +0000 | [diff] [blame] | 1711 | |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1712 | #ifdef HAVE_STAT |
| 1713 | /* Helper to look for __init__.py or __init__.py[co] in potential package */ |
| 1714 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1715 | find_init_module(char *buf) |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1716 | { |
Tim Peters | 0f9431f | 2001-07-05 03:47:53 +0000 | [diff] [blame] | 1717 | const size_t save_len = strlen(buf); |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 1718 | size_t i = save_len; |
Tim Peters | 0f9431f | 2001-07-05 03:47:53 +0000 | [diff] [blame] | 1719 | char *pname; /* pointer to start of __init__ */ |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1720 | struct stat statbuf; |
| 1721 | |
Tim Peters | 0f9431f | 2001-07-05 03:47:53 +0000 | [diff] [blame] | 1722 | /* For calling case_ok(buf, len, namelen, name): |
| 1723 | * /a/b/c/d/e/f/g/h/i/j/k/some_long_module_name.py\0 |
| 1724 | * ^ ^ ^ ^ |
| 1725 | * |--------------------- buf ---------------------| |
| 1726 | * |------------------- len ------------------| |
| 1727 | * |------ name -------| |
| 1728 | * |----- namelen -----| |
| 1729 | */ |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1730 | if (save_len + 13 >= MAXPATHLEN) |
| 1731 | return 0; |
| 1732 | buf[i++] = SEP; |
Tim Peters | 0f9431f | 2001-07-05 03:47:53 +0000 | [diff] [blame] | 1733 | pname = buf + i; |
| 1734 | strcpy(pname, "__init__.py"); |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1735 | if (stat(buf, &statbuf) == 0) { |
Tim Peters | 0f9431f | 2001-07-05 03:47:53 +0000 | [diff] [blame] | 1736 | if (case_ok(buf, |
| 1737 | save_len + 9, /* len("/__init__") */ |
| 1738 | 8, /* len("__init__") */ |
| 1739 | pname)) { |
| 1740 | buf[save_len] = '\0'; |
| 1741 | return 1; |
| 1742 | } |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1743 | } |
Tim Peters | 0f9431f | 2001-07-05 03:47:53 +0000 | [diff] [blame] | 1744 | i += strlen(pname); |
| 1745 | strcpy(buf+i, Py_OptimizeFlag ? "o" : "c"); |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1746 | if (stat(buf, &statbuf) == 0) { |
Tim Peters | 0f9431f | 2001-07-05 03:47:53 +0000 | [diff] [blame] | 1747 | if (case_ok(buf, |
| 1748 | save_len + 9, /* len("/__init__") */ |
| 1749 | 8, /* len("__init__") */ |
| 1750 | pname)) { |
| 1751 | buf[save_len] = '\0'; |
| 1752 | return 1; |
| 1753 | } |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1754 | } |
| 1755 | buf[save_len] = '\0'; |
| 1756 | return 0; |
| 1757 | } |
Guido van Rossum | 48a680c | 2001-03-02 06:34:14 +0000 | [diff] [blame] | 1758 | |
| 1759 | #else |
| 1760 | |
| 1761 | #ifdef RISCOS |
| 1762 | static int |
| 1763 | find_init_module(buf) |
| 1764 | char *buf; |
| 1765 | { |
| 1766 | int save_len = strlen(buf); |
| 1767 | int i = save_len; |
| 1768 | |
| 1769 | if (save_len + 13 >= MAXPATHLEN) |
| 1770 | return 0; |
| 1771 | buf[i++] = SEP; |
| 1772 | strcpy(buf+i, "__init__/py"); |
| 1773 | if (isfile(buf)) { |
| 1774 | buf[save_len] = '\0'; |
| 1775 | return 1; |
| 1776 | } |
| 1777 | |
| 1778 | if (Py_OptimizeFlag) |
| 1779 | strcpy(buf+i, "o"); |
| 1780 | else |
| 1781 | strcpy(buf+i, "c"); |
| 1782 | if (isfile(buf)) { |
| 1783 | buf[save_len] = '\0'; |
| 1784 | return 1; |
| 1785 | } |
| 1786 | buf[save_len] = '\0'; |
| 1787 | return 0; |
| 1788 | } |
| 1789 | #endif /*RISCOS*/ |
| 1790 | |
Guido van Rossum | 197346f | 1997-10-31 18:38:52 +0000 | [diff] [blame] | 1791 | #endif /* HAVE_STAT */ |
| 1792 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1793 | |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 1794 | static int init_builtin(char *); /* Forward */ |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1795 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1796 | /* Load an external module using the default search path and return |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 1797 | its module object WITH INCREMENTED REFERENCE COUNT */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1798 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1799 | static PyObject * |
Amaury Forgeot d'Arc | 982b2fa | 2009-07-25 16:22:06 +0000 | [diff] [blame] | 1800 | load_module(char *name, FILE *fp, char *pathname, int type, PyObject *loader) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1801 | { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1802 | PyObject *modules; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1803 | PyObject *m; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1804 | int err; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1805 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1806 | /* First check that there's an open file (if we need one) */ |
| 1807 | switch (type) { |
| 1808 | case PY_SOURCE: |
| 1809 | case PY_COMPILED: |
| 1810 | if (fp == NULL) { |
| 1811 | PyErr_Format(PyExc_ValueError, |
| 1812 | "file object required for import (type code %d)", |
| 1813 | type); |
| 1814 | return NULL; |
| 1815 | } |
| 1816 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1817 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1818 | switch (type) { |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1819 | |
| 1820 | case PY_SOURCE: |
Amaury Forgeot d'Arc | 982b2fa | 2009-07-25 16:22:06 +0000 | [diff] [blame] | 1821 | m = load_source_module(name, pathname, fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1822 | break; |
| 1823 | |
| 1824 | case PY_COMPILED: |
Amaury Forgeot d'Arc | 982b2fa | 2009-07-25 16:22:06 +0000 | [diff] [blame] | 1825 | m = load_compiled_module(name, pathname, fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1826 | break; |
| 1827 | |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 1828 | #ifdef HAVE_DYNAMIC_LOADING |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1829 | case C_EXTENSION: |
Amaury Forgeot d'Arc | 982b2fa | 2009-07-25 16:22:06 +0000 | [diff] [blame] | 1830 | m = _PyImport_LoadDynamicModule(name, pathname, fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1831 | break; |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 1832 | #endif |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1833 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1834 | case PKG_DIRECTORY: |
Amaury Forgeot d'Arc | 982b2fa | 2009-07-25 16:22:06 +0000 | [diff] [blame] | 1835 | m = load_package(name, pathname); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1836 | break; |
| 1837 | |
| 1838 | case C_BUILTIN: |
| 1839 | case PY_FROZEN: |
Amaury Forgeot d'Arc | 982b2fa | 2009-07-25 16:22:06 +0000 | [diff] [blame] | 1840 | if (pathname != NULL && pathname[0] != '\0') |
| 1841 | name = pathname; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1842 | if (type == C_BUILTIN) |
| 1843 | err = init_builtin(name); |
| 1844 | else |
| 1845 | err = PyImport_ImportFrozenModule(name); |
| 1846 | if (err < 0) |
Guido van Rossum | a86f77d | 1997-09-09 18:53:47 +0000 | [diff] [blame] | 1847 | return NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1848 | if (err == 0) { |
| 1849 | PyErr_Format(PyExc_ImportError, |
| 1850 | "Purported %s module %.200s not found", |
| 1851 | type == C_BUILTIN ? |
| 1852 | "builtin" : "frozen", |
| 1853 | name); |
Guido van Rossum | a86f77d | 1997-09-09 18:53:47 +0000 | [diff] [blame] | 1854 | return NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1855 | } |
| 1856 | modules = PyImport_GetModuleDict(); |
| 1857 | m = PyDict_GetItemString(modules, name); |
| 1858 | if (m == NULL) { |
| 1859 | PyErr_Format( |
| 1860 | PyExc_ImportError, |
| 1861 | "%s module %.200s not properly initialized", |
| 1862 | type == C_BUILTIN ? |
| 1863 | "builtin" : "frozen", |
| 1864 | name); |
Guido van Rossum | a86f77d | 1997-09-09 18:53:47 +0000 | [diff] [blame] | 1865 | return NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1866 | } |
| 1867 | Py_INCREF(m); |
| 1868 | break; |
| 1869 | |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1870 | case IMP_HOOK: { |
| 1871 | if (loader == NULL) { |
| 1872 | PyErr_SetString(PyExc_ImportError, |
| 1873 | "import hook without loader"); |
| 1874 | return NULL; |
| 1875 | } |
| 1876 | m = PyObject_CallMethod(loader, "load_module", "s", name); |
| 1877 | break; |
| 1878 | } |
| 1879 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1880 | default: |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1881 | PyErr_Format(PyExc_ImportError, |
| 1882 | "Don't know how to import %.200s (type code %d)", |
| 1883 | name, type); |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 1884 | m = NULL; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1885 | |
| 1886 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1887 | |
| 1888 | return m; |
| 1889 | } |
| 1890 | |
| 1891 | |
| 1892 | /* Initialize a built-in module. |
Brett Cannon | 5a9aa4f | 2006-10-03 21:58:55 +0000 | [diff] [blame] | 1893 | Return 1 for success, 0 if the module is not found, and -1 with |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1894 | an exception set if the initialization failed. */ |
Guido van Rossum | 7f133ed | 1991-02-19 12:23:57 +0000 | [diff] [blame] | 1895 | |
Guido van Rossum | 7f133ed | 1991-02-19 12:23:57 +0000 | [diff] [blame] | 1896 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1897 | init_builtin(char *name) |
Guido van Rossum | 7f133ed | 1991-02-19 12:23:57 +0000 | [diff] [blame] | 1898 | { |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 1899 | struct _inittab *p; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 1900 | |
Greg Ward | 201baee | 2001-10-04 14:52:06 +0000 | [diff] [blame] | 1901 | if (_PyImport_FindExtension(name, name) != NULL) |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 1902 | return 1; |
| 1903 | |
Guido van Rossum | 771c6c8 | 1997-10-31 18:37:24 +0000 | [diff] [blame] | 1904 | for (p = PyImport_Inittab; p->name != NULL; p++) { |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 1905 | if (strcmp(name, p->name) == 0) { |
| 1906 | if (p->initfunc == NULL) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1907 | PyErr_Format(PyExc_ImportError, |
| 1908 | "Cannot re-init internal module %.200s", |
| 1909 | name); |
Guido van Rossum | 74e6a11 | 1994-08-29 12:54:38 +0000 | [diff] [blame] | 1910 | return -1; |
| 1911 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1912 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 1913 | PySys_WriteStderr("import %s # builtin\n", name); |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 1914 | (*p->initfunc)(); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1915 | if (PyErr_Occurred()) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1916 | return -1; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 1917 | if (_PyImport_FixupExtension(name, name) == NULL) |
| 1918 | return -1; |
Guido van Rossum | 7f133ed | 1991-02-19 12:23:57 +0000 | [diff] [blame] | 1919 | return 1; |
| 1920 | } |
| 1921 | } |
| 1922 | return 0; |
| 1923 | } |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 1924 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1925 | |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1926 | /* Frozen modules */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1927 | |
Guido van Rossum | cfd0a22 | 1996-06-17 17:06:34 +0000 | [diff] [blame] | 1928 | static struct _frozen * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1929 | find_frozen(char *name) |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1930 | { |
Guido van Rossum | cfd0a22 | 1996-06-17 17:06:34 +0000 | [diff] [blame] | 1931 | struct _frozen *p; |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1932 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1933 | for (p = PyImport_FrozenModules; ; p++) { |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1934 | if (p->name == NULL) |
| 1935 | return NULL; |
| 1936 | if (strcmp(p->name, name) == 0) |
| 1937 | break; |
| 1938 | } |
| 1939 | return p; |
| 1940 | } |
| 1941 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1942 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1943 | get_frozen_object(char *name) |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1944 | { |
Guido van Rossum | cfd0a22 | 1996-06-17 17:06:34 +0000 | [diff] [blame] | 1945 | struct _frozen *p = find_frozen(name); |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1946 | int size; |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1947 | |
| 1948 | if (p == NULL) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1949 | PyErr_Format(PyExc_ImportError, |
| 1950 | "No such frozen object named %.200s", |
| 1951 | name); |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1952 | return NULL; |
| 1953 | } |
Guido van Rossum | 8f4d331 | 2001-10-18 18:54:11 +0000 | [diff] [blame] | 1954 | if (p->code == NULL) { |
| 1955 | PyErr_Format(PyExc_ImportError, |
| 1956 | "Excluded frozen object named %.200s", |
| 1957 | name); |
| 1958 | return NULL; |
| 1959 | } |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1960 | size = p->size; |
| 1961 | if (size < 0) |
| 1962 | size = -size; |
| 1963 | return PyMarshal_ReadObjectFromString((char *)p->code, size); |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1964 | } |
| 1965 | |
| 1966 | /* Initialize a frozen module. |
| 1967 | Return 1 for succes, 0 if the module is not found, and -1 with |
| 1968 | an exception set if the initialization failed. |
| 1969 | This function is also used from frozenmain.c */ |
Guido van Rossum | 0b34490 | 1995-02-07 15:35:27 +0000 | [diff] [blame] | 1970 | |
| 1971 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1972 | PyImport_ImportFrozenModule(char *name) |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 1973 | { |
Guido van Rossum | cfd0a22 | 1996-06-17 17:06:34 +0000 | [diff] [blame] | 1974 | struct _frozen *p = find_frozen(name); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1975 | PyObject *co; |
| 1976 | PyObject *m; |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1977 | int ispackage; |
| 1978 | int size; |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 1979 | |
| 1980 | if (p == NULL) |
| 1981 | return 0; |
Guido van Rossum | 8f4d331 | 2001-10-18 18:54:11 +0000 | [diff] [blame] | 1982 | if (p->code == NULL) { |
| 1983 | PyErr_Format(PyExc_ImportError, |
| 1984 | "Excluded frozen object named %.200s", |
| 1985 | name); |
| 1986 | return -1; |
| 1987 | } |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1988 | size = p->size; |
| 1989 | ispackage = (size < 0); |
| 1990 | if (ispackage) |
| 1991 | size = -size; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1992 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 1993 | PySys_WriteStderr("import %s # frozen%s\n", |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 1994 | name, ispackage ? " package" : ""); |
| 1995 | co = PyMarshal_ReadObjectFromString((char *)p->code, size); |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 1996 | if (co == NULL) |
| 1997 | return -1; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1998 | if (!PyCode_Check(co)) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 1999 | PyErr_Format(PyExc_TypeError, |
| 2000 | "frozen object %.200s is not a code object", |
| 2001 | name); |
Neal Norwitz | c0cde4d | 2006-07-16 02:17:36 +0000 | [diff] [blame] | 2002 | goto err_return; |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 2003 | } |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 2004 | if (ispackage) { |
| 2005 | /* Set __path__ to the package name */ |
| 2006 | PyObject *d, *s; |
| 2007 | int err; |
| 2008 | m = PyImport_AddModule(name); |
| 2009 | if (m == NULL) |
Neal Norwitz | c0cde4d | 2006-07-16 02:17:36 +0000 | [diff] [blame] | 2010 | goto err_return; |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 2011 | d = PyModule_GetDict(m); |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2012 | s = PyString_InternFromString(name); |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 2013 | if (s == NULL) |
Neal Norwitz | c0cde4d | 2006-07-16 02:17:36 +0000 | [diff] [blame] | 2014 | goto err_return; |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 2015 | err = PyDict_SetItemString(d, "__path__", s); |
| 2016 | Py_DECREF(s); |
| 2017 | if (err != 0) |
Neal Norwitz | c0cde4d | 2006-07-16 02:17:36 +0000 | [diff] [blame] | 2018 | goto err_return; |
Guido van Rossum | a5568d3 | 1998-03-05 03:45:08 +0000 | [diff] [blame] | 2019 | } |
Guido van Rossum | e32bf6e | 1998-02-11 05:53:02 +0000 | [diff] [blame] | 2020 | m = PyImport_ExecCodeModuleEx(name, co, "<frozen>"); |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 2021 | if (m == NULL) |
Neal Norwitz | c0cde4d | 2006-07-16 02:17:36 +0000 | [diff] [blame] | 2022 | goto err_return; |
| 2023 | Py_DECREF(co); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2024 | Py_DECREF(m); |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 2025 | return 1; |
Neal Norwitz | c0cde4d | 2006-07-16 02:17:36 +0000 | [diff] [blame] | 2026 | err_return: |
| 2027 | Py_DECREF(co); |
| 2028 | return -1; |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 2029 | } |
Guido van Rossum | 74e6a11 | 1994-08-29 12:54:38 +0000 | [diff] [blame] | 2030 | |
| 2031 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2032 | /* Import a module, either built-in, frozen, or external, and return |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 2033 | its module object WITH INCREMENTED REFERENCE COUNT */ |
Guido van Rossum | 74e6a11 | 1994-08-29 12:54:38 +0000 | [diff] [blame] | 2034 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2035 | PyObject * |
Jeremy Hylton | af68c87 | 2005-12-10 18:50:16 +0000 | [diff] [blame] | 2036 | PyImport_ImportModule(const char *name) |
Guido van Rossum | 74e6a11 | 1994-08-29 12:54:38 +0000 | [diff] [blame] | 2037 | { |
Marc-André Lemburg | 3c61c35 | 2001-02-09 19:40:15 +0000 | [diff] [blame] | 2038 | PyObject *pname; |
| 2039 | PyObject *result; |
| 2040 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2041 | pname = PyString_FromString(name); |
Neal Norwitz | a11e4c1 | 2003-03-23 14:31:01 +0000 | [diff] [blame] | 2042 | if (pname == NULL) |
| 2043 | return NULL; |
Marc-André Lemburg | 3c61c35 | 2001-02-09 19:40:15 +0000 | [diff] [blame] | 2044 | result = PyImport_Import(pname); |
| 2045 | Py_DECREF(pname); |
| 2046 | return result; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2047 | } |
| 2048 | |
Christian Heimes | 000a074 | 2008-01-03 22:16:32 +0000 | [diff] [blame] | 2049 | /* Import a module without blocking |
| 2050 | * |
| 2051 | * At first it tries to fetch the module from sys.modules. If the module was |
| 2052 | * never loaded before it loads it with PyImport_ImportModule() unless another |
| 2053 | * thread holds the import lock. In the latter case the function raises an |
| 2054 | * ImportError instead of blocking. |
| 2055 | * |
| 2056 | * Returns the module object with incremented ref count. |
| 2057 | */ |
| 2058 | PyObject * |
| 2059 | PyImport_ImportModuleNoBlock(const char *name) |
| 2060 | { |
| 2061 | PyObject *result; |
| 2062 | PyObject *modules; |
| 2063 | long me; |
| 2064 | |
| 2065 | /* Try to get the module from sys.modules[name] */ |
| 2066 | modules = PyImport_GetModuleDict(); |
| 2067 | if (modules == NULL) |
| 2068 | return NULL; |
| 2069 | |
| 2070 | result = PyDict_GetItemString(modules, name); |
| 2071 | if (result != NULL) { |
| 2072 | Py_INCREF(result); |
| 2073 | return result; |
| 2074 | } |
| 2075 | else { |
| 2076 | PyErr_Clear(); |
| 2077 | } |
Benjamin Peterson | 17f03ca | 2008-09-01 14:18:30 +0000 | [diff] [blame] | 2078 | #ifdef WITH_THREAD |
Christian Heimes | 000a074 | 2008-01-03 22:16:32 +0000 | [diff] [blame] | 2079 | /* check the import lock |
| 2080 | * me might be -1 but I ignore the error here, the lock function |
| 2081 | * takes care of the problem */ |
| 2082 | me = PyThread_get_thread_ident(); |
| 2083 | if (import_lock_thread == -1 || import_lock_thread == me) { |
| 2084 | /* no thread or me is holding the lock */ |
| 2085 | return PyImport_ImportModule(name); |
| 2086 | } |
| 2087 | else { |
| 2088 | PyErr_Format(PyExc_ImportError, |
| 2089 | "Failed to import %.200s because the import lock" |
| 2090 | "is held by another thread.", |
| 2091 | name); |
| 2092 | return NULL; |
| 2093 | } |
Benjamin Peterson | 17f03ca | 2008-09-01 14:18:30 +0000 | [diff] [blame] | 2094 | #else |
| 2095 | return PyImport_ImportModule(name); |
| 2096 | #endif |
Christian Heimes | 000a074 | 2008-01-03 22:16:32 +0000 | [diff] [blame] | 2097 | } |
| 2098 | |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2099 | /* Forward declarations for helper routines */ |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2100 | static PyObject *get_parent(PyObject *globals, char *buf, |
| 2101 | Py_ssize_t *p_buflen, int level); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 2102 | static PyObject *load_next(PyObject *mod, PyObject *altmod, |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 2103 | char **p_name, char *buf, Py_ssize_t *p_buflen); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 2104 | static int mark_miss(char *name); |
| 2105 | static int ensure_fromlist(PyObject *mod, PyObject *fromlist, |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 2106 | char *buf, Py_ssize_t buflen, int recursive); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 2107 | static PyObject * import_submodule(PyObject *mod, char *name, char *fullname); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2108 | |
| 2109 | /* The Magnum Opus of dotted-name import :-) */ |
| 2110 | |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 2111 | static PyObject * |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2112 | import_module_level(char *name, PyObject *globals, PyObject *locals, |
| 2113 | PyObject *fromlist, int level) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2114 | { |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2115 | char buf[MAXPATHLEN+1]; |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 2116 | Py_ssize_t buflen = 0; |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2117 | PyObject *parent, *head, *next, *tail; |
| 2118 | |
Christian Heimes | 3403f15 | 2008-01-09 19:56:33 +0000 | [diff] [blame] | 2119 | if (strchr(name, '/') != NULL |
| 2120 | #ifdef MS_WINDOWS |
| 2121 | || strchr(name, '\\') != NULL |
| 2122 | #endif |
| 2123 | ) { |
| 2124 | PyErr_SetString(PyExc_ImportError, |
| 2125 | "Import by filename is not supported."); |
| 2126 | return NULL; |
| 2127 | } |
| 2128 | |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2129 | parent = get_parent(globals, buf, &buflen, level); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2130 | if (parent == NULL) |
| 2131 | return NULL; |
| 2132 | |
| 2133 | head = load_next(parent, Py_None, &name, buf, &buflen); |
| 2134 | if (head == NULL) |
| 2135 | return NULL; |
| 2136 | |
| 2137 | tail = head; |
| 2138 | Py_INCREF(tail); |
| 2139 | while (name) { |
| 2140 | next = load_next(tail, tail, &name, buf, &buflen); |
| 2141 | Py_DECREF(tail); |
| 2142 | if (next == NULL) { |
| 2143 | Py_DECREF(head); |
| 2144 | return NULL; |
| 2145 | } |
| 2146 | tail = next; |
| 2147 | } |
Thomas Wouters | 8ddab27 | 2006-04-04 16:17:02 +0000 | [diff] [blame] | 2148 | if (tail == Py_None) { |
| 2149 | /* If tail is Py_None, both get_parent and load_next found |
| 2150 | an empty module name: someone called __import__("") or |
| 2151 | doctored faulty bytecode */ |
Thomas Wouters | 4bdaa27 | 2006-04-05 13:39:37 +0000 | [diff] [blame] | 2152 | Py_DECREF(tail); |
| 2153 | Py_DECREF(head); |
Thomas Wouters | 8ddab27 | 2006-04-04 16:17:02 +0000 | [diff] [blame] | 2154 | PyErr_SetString(PyExc_ValueError, |
| 2155 | "Empty module name"); |
| 2156 | return NULL; |
| 2157 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2158 | |
| 2159 | if (fromlist != NULL) { |
| 2160 | if (fromlist == Py_None || !PyObject_IsTrue(fromlist)) |
| 2161 | fromlist = NULL; |
| 2162 | } |
| 2163 | |
| 2164 | if (fromlist == NULL) { |
| 2165 | Py_DECREF(tail); |
| 2166 | return head; |
| 2167 | } |
| 2168 | |
| 2169 | Py_DECREF(head); |
Guido van Rossum | 9905ef9 | 1997-09-08 16:07:11 +0000 | [diff] [blame] | 2170 | if (!ensure_fromlist(tail, fromlist, buf, buflen, 0)) { |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2171 | Py_DECREF(tail); |
| 2172 | return NULL; |
| 2173 | } |
| 2174 | |
| 2175 | return tail; |
| 2176 | } |
| 2177 | |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2178 | PyObject * |
| 2179 | PyImport_ImportModuleLevel(char *name, PyObject *globals, PyObject *locals, |
| 2180 | PyObject *fromlist, int level) |
| 2181 | { |
| 2182 | PyObject *result; |
Thomas Wouters | c4dcb38 | 2009-09-16 19:55:54 +0000 | [diff] [blame] | 2183 | _PyImport_AcquireLock(); |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2184 | result = import_module_level(name, globals, locals, fromlist, level); |
Thomas Wouters | c4dcb38 | 2009-09-16 19:55:54 +0000 | [diff] [blame] | 2185 | if (_PyImport_ReleaseLock() < 0) { |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 2186 | Py_XDECREF(result); |
| 2187 | PyErr_SetString(PyExc_RuntimeError, |
| 2188 | "not holding the import lock"); |
| 2189 | return NULL; |
| 2190 | } |
Guido van Rossum | 75acc9c | 1998-03-03 22:26:50 +0000 | [diff] [blame] | 2191 | return result; |
| 2192 | } |
| 2193 | |
Fred Drake | 8759090 | 2004-05-28 20:21:36 +0000 | [diff] [blame] | 2194 | /* Return the package that an import is being performed in. If globals comes |
| 2195 | from the module foo.bar.bat (not itself a package), this returns the |
| 2196 | sys.modules entry for foo.bar. If globals is from a package's __init__.py, |
Georg Brandl | 5f6861d | 2006-05-28 21:57:35 +0000 | [diff] [blame] | 2197 | the package's entry in sys.modules is returned, as a borrowed reference. |
Fred Drake | 8759090 | 2004-05-28 20:21:36 +0000 | [diff] [blame] | 2198 | |
| 2199 | The *name* of the returned package is returned in buf, with the length of |
| 2200 | the name in *p_buflen. |
| 2201 | |
| 2202 | If globals doesn't come from a package or a module in a package, or a |
| 2203 | corresponding entry is not found in sys.modules, Py_None is returned. |
| 2204 | */ |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2205 | static PyObject * |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2206 | get_parent(PyObject *globals, char *buf, Py_ssize_t *p_buflen, int level) |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2207 | { |
| 2208 | static PyObject *namestr = NULL; |
| 2209 | static PyObject *pathstr = NULL; |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2210 | static PyObject *pkgstr = NULL; |
| 2211 | PyObject *pkgname, *modname, *modpath, *modules, *parent; |
Nick Coghlan | b028f50 | 2008-07-13 14:52:36 +0000 | [diff] [blame] | 2212 | int orig_level = level; |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2213 | |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2214 | if (globals == NULL || !PyDict_Check(globals) || !level) |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2215 | return Py_None; |
| 2216 | |
| 2217 | if (namestr == NULL) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2218 | namestr = PyString_InternFromString("__name__"); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2219 | if (namestr == NULL) |
| 2220 | return NULL; |
| 2221 | } |
| 2222 | if (pathstr == NULL) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2223 | pathstr = PyString_InternFromString("__path__"); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2224 | if (pathstr == NULL) |
| 2225 | return NULL; |
| 2226 | } |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2227 | if (pkgstr == NULL) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2228 | pkgstr = PyString_InternFromString("__package__"); |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2229 | if (pkgstr == NULL) |
| 2230 | return NULL; |
| 2231 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2232 | |
| 2233 | *buf = '\0'; |
| 2234 | *p_buflen = 0; |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2235 | pkgname = PyDict_GetItem(globals, pkgstr); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2236 | |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2237 | if ((pkgname != NULL) && (pkgname != Py_None)) { |
| 2238 | /* __package__ is set, so use it */ |
| 2239 | Py_ssize_t len; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2240 | if (!PyString_Check(pkgname)) { |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2241 | PyErr_SetString(PyExc_ValueError, |
| 2242 | "__package__ set to non-string"); |
| 2243 | return NULL; |
| 2244 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2245 | len = PyString_GET_SIZE(pkgname); |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2246 | if (len == 0) { |
| 2247 | if (level > 0) { |
| 2248 | PyErr_SetString(PyExc_ValueError, |
| 2249 | "Attempted relative import in non-package"); |
| 2250 | return NULL; |
| 2251 | } |
| 2252 | return Py_None; |
| 2253 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2254 | if (len > MAXPATHLEN) { |
| 2255 | PyErr_SetString(PyExc_ValueError, |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2256 | "Package name too long"); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2257 | return NULL; |
| 2258 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2259 | strcpy(buf, PyString_AS_STRING(pkgname)); |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2260 | } else { |
| 2261 | /* __package__ not set, so figure it out and set it */ |
| 2262 | modname = PyDict_GetItem(globals, namestr); |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2263 | if (modname == NULL || !PyString_Check(modname)) |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2264 | return Py_None; |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2265 | |
| 2266 | modpath = PyDict_GetItem(globals, pathstr); |
| 2267 | if (modpath != NULL) { |
| 2268 | /* __path__ is set, so modname is already the package name */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2269 | Py_ssize_t len = PyString_GET_SIZE(modname); |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2270 | int error; |
| 2271 | if (len > MAXPATHLEN) { |
| 2272 | PyErr_SetString(PyExc_ValueError, |
| 2273 | "Module name too long"); |
| 2274 | return NULL; |
| 2275 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2276 | strcpy(buf, PyString_AS_STRING(modname)); |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2277 | error = PyDict_SetItem(globals, pkgstr, modname); |
| 2278 | if (error) { |
| 2279 | PyErr_SetString(PyExc_ValueError, |
| 2280 | "Could not set __package__"); |
| 2281 | return NULL; |
| 2282 | } |
| 2283 | } else { |
| 2284 | /* Normal module, so work out the package name if any */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2285 | char *start = PyString_AS_STRING(modname); |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2286 | char *lastdot = strrchr(start, '.'); |
| 2287 | size_t len; |
| 2288 | int error; |
| 2289 | if (lastdot == NULL && level > 0) { |
| 2290 | PyErr_SetString(PyExc_ValueError, |
| 2291 | "Attempted relative import in non-package"); |
| 2292 | return NULL; |
| 2293 | } |
| 2294 | if (lastdot == NULL) { |
| 2295 | error = PyDict_SetItem(globals, pkgstr, Py_None); |
| 2296 | if (error) { |
| 2297 | PyErr_SetString(PyExc_ValueError, |
| 2298 | "Could not set __package__"); |
| 2299 | return NULL; |
| 2300 | } |
| 2301 | return Py_None; |
| 2302 | } |
| 2303 | len = lastdot - start; |
| 2304 | if (len >= MAXPATHLEN) { |
| 2305 | PyErr_SetString(PyExc_ValueError, |
| 2306 | "Module name too long"); |
| 2307 | return NULL; |
| 2308 | } |
| 2309 | strncpy(buf, start, len); |
| 2310 | buf[len] = '\0'; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2311 | pkgname = PyString_FromString(buf); |
Nick Coghlan | ef01d82 | 2007-12-03 12:55:17 +0000 | [diff] [blame] | 2312 | if (pkgname == NULL) { |
| 2313 | return NULL; |
| 2314 | } |
| 2315 | error = PyDict_SetItem(globals, pkgstr, pkgname); |
| 2316 | Py_DECREF(pkgname); |
| 2317 | if (error) { |
| 2318 | PyErr_SetString(PyExc_ValueError, |
| 2319 | "Could not set __package__"); |
| 2320 | return NULL; |
| 2321 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2322 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2323 | } |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2324 | while (--level > 0) { |
| 2325 | char *dot = strrchr(buf, '.'); |
| 2326 | if (dot == NULL) { |
| 2327 | PyErr_SetString(PyExc_ValueError, |
Georg Brandl | 98775df | 2006-09-06 06:09:31 +0000 | [diff] [blame] | 2328 | "Attempted relative import beyond " |
| 2329 | "toplevel package"); |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2330 | return NULL; |
| 2331 | } |
| 2332 | *dot = '\0'; |
| 2333 | } |
| 2334 | *p_buflen = strlen(buf); |
| 2335 | |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2336 | modules = PyImport_GetModuleDict(); |
| 2337 | parent = PyDict_GetItemString(modules, buf); |
Nick Coghlan | b028f50 | 2008-07-13 14:52:36 +0000 | [diff] [blame] | 2338 | if (parent == NULL) { |
| 2339 | if (orig_level < 1) { |
| 2340 | PyObject *err_msg = PyString_FromFormat( |
| 2341 | "Parent module '%.200s' not found " |
| 2342 | "while handling absolute import", buf); |
| 2343 | if (err_msg == NULL) { |
| 2344 | return NULL; |
| 2345 | } |
| 2346 | if (!PyErr_WarnEx(PyExc_RuntimeWarning, |
| 2347 | PyString_AsString(err_msg), 1)) { |
| 2348 | *buf = '\0'; |
| 2349 | *p_buflen = 0; |
| 2350 | parent = Py_None; |
| 2351 | } |
| 2352 | Py_DECREF(err_msg); |
| 2353 | } else { |
| 2354 | PyErr_Format(PyExc_SystemError, |
| 2355 | "Parent module '%.200s' not loaded, " |
| 2356 | "cannot perform relative import", buf); |
| 2357 | } |
| 2358 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2359 | return parent; |
| 2360 | /* We expect, but can't guarantee, if parent != None, that: |
| 2361 | - parent.__name__ == buf |
| 2362 | - parent.__dict__ is globals |
| 2363 | If this is violated... Who cares? */ |
| 2364 | } |
| 2365 | |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2366 | /* altmod is either None or same as mod */ |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2367 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2368 | load_next(PyObject *mod, PyObject *altmod, char **p_name, char *buf, |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 2369 | Py_ssize_t *p_buflen) |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2370 | { |
| 2371 | char *name = *p_name; |
| 2372 | char *dot = strchr(name, '.'); |
Fred Drake | 4c82b23 | 2000-06-30 16:18:57 +0000 | [diff] [blame] | 2373 | size_t len; |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2374 | char *p; |
| 2375 | PyObject *result; |
| 2376 | |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2377 | if (strlen(name) == 0) { |
Thomas Wouters | 8ddab27 | 2006-04-04 16:17:02 +0000 | [diff] [blame] | 2378 | /* completely empty module name should only happen in |
| 2379 | 'from . import' (or '__import__("")')*/ |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2380 | Py_INCREF(mod); |
| 2381 | *p_name = NULL; |
| 2382 | return mod; |
| 2383 | } |
| 2384 | |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2385 | if (dot == NULL) { |
| 2386 | *p_name = NULL; |
| 2387 | len = strlen(name); |
| 2388 | } |
| 2389 | else { |
| 2390 | *p_name = dot+1; |
| 2391 | len = dot-name; |
| 2392 | } |
Guido van Rossum | 111c20b | 1998-04-11 17:38:22 +0000 | [diff] [blame] | 2393 | if (len == 0) { |
| 2394 | PyErr_SetString(PyExc_ValueError, |
| 2395 | "Empty module name"); |
| 2396 | return NULL; |
| 2397 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2398 | |
| 2399 | p = buf + *p_buflen; |
| 2400 | if (p != buf) |
| 2401 | *p++ = '.'; |
| 2402 | if (p+len-buf >= MAXPATHLEN) { |
| 2403 | PyErr_SetString(PyExc_ValueError, |
| 2404 | "Module name too long"); |
| 2405 | return NULL; |
| 2406 | } |
| 2407 | strncpy(p, name, len); |
| 2408 | p[len] = '\0'; |
| 2409 | *p_buflen = p+len-buf; |
| 2410 | |
| 2411 | result = import_submodule(mod, p, buf); |
| 2412 | if (result == Py_None && altmod != mod) { |
| 2413 | Py_DECREF(result); |
Guido van Rossum | f5f5fdb | 1997-09-06 20:29:52 +0000 | [diff] [blame] | 2414 | /* Here, altmod must be None and mod must not be None */ |
Guido van Rossum | 0c81945 | 1997-09-07 06:16:57 +0000 | [diff] [blame] | 2415 | result = import_submodule(altmod, p, p); |
Guido van Rossum | f5f5fdb | 1997-09-06 20:29:52 +0000 | [diff] [blame] | 2416 | if (result != NULL && result != Py_None) { |
| 2417 | if (mark_miss(buf) != 0) { |
| 2418 | Py_DECREF(result); |
| 2419 | return NULL; |
| 2420 | } |
| 2421 | strncpy(buf, name, len); |
| 2422 | buf[len] = '\0'; |
| 2423 | *p_buflen = len; |
| 2424 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2425 | } |
| 2426 | if (result == NULL) |
| 2427 | return NULL; |
| 2428 | |
| 2429 | if (result == Py_None) { |
| 2430 | Py_DECREF(result); |
| 2431 | PyErr_Format(PyExc_ImportError, |
| 2432 | "No module named %.200s", name); |
| 2433 | return NULL; |
| 2434 | } |
| 2435 | |
| 2436 | return result; |
| 2437 | } |
| 2438 | |
| 2439 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2440 | mark_miss(char *name) |
Guido van Rossum | f5f5fdb | 1997-09-06 20:29:52 +0000 | [diff] [blame] | 2441 | { |
| 2442 | PyObject *modules = PyImport_GetModuleDict(); |
| 2443 | return PyDict_SetItemString(modules, name, Py_None); |
| 2444 | } |
| 2445 | |
| 2446 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 2447 | ensure_fromlist(PyObject *mod, PyObject *fromlist, char *buf, Py_ssize_t buflen, |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2448 | int recursive) |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2449 | { |
| 2450 | int i; |
| 2451 | |
| 2452 | if (!PyObject_HasAttrString(mod, "__path__")) |
| 2453 | return 1; |
| 2454 | |
| 2455 | for (i = 0; ; i++) { |
| 2456 | PyObject *item = PySequence_GetItem(fromlist, i); |
| 2457 | int hasit; |
| 2458 | if (item == NULL) { |
| 2459 | if (PyErr_ExceptionMatches(PyExc_IndexError)) { |
| 2460 | PyErr_Clear(); |
| 2461 | return 1; |
| 2462 | } |
| 2463 | return 0; |
| 2464 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2465 | if (!PyString_Check(item)) { |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2466 | PyErr_SetString(PyExc_TypeError, |
| 2467 | "Item in ``from list'' not a string"); |
| 2468 | Py_DECREF(item); |
| 2469 | return 0; |
| 2470 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2471 | if (PyString_AS_STRING(item)[0] == '*') { |
Guido van Rossum | 9905ef9 | 1997-09-08 16:07:11 +0000 | [diff] [blame] | 2472 | PyObject *all; |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2473 | Py_DECREF(item); |
Guido van Rossum | 9905ef9 | 1997-09-08 16:07:11 +0000 | [diff] [blame] | 2474 | /* See if the package defines __all__ */ |
| 2475 | if (recursive) |
| 2476 | continue; /* Avoid endless recursion */ |
| 2477 | all = PyObject_GetAttrString(mod, "__all__"); |
| 2478 | if (all == NULL) |
| 2479 | PyErr_Clear(); |
| 2480 | else { |
Martin v. Löwis | 83969ee | 2004-03-23 16:28:13 +0000 | [diff] [blame] | 2481 | int ret = ensure_fromlist(mod, all, buf, buflen, 1); |
Guido van Rossum | 9905ef9 | 1997-09-08 16:07:11 +0000 | [diff] [blame] | 2482 | Py_DECREF(all); |
Martin v. Löwis | 83969ee | 2004-03-23 16:28:13 +0000 | [diff] [blame] | 2483 | if (!ret) |
| 2484 | return 0; |
Guido van Rossum | 9905ef9 | 1997-09-08 16:07:11 +0000 | [diff] [blame] | 2485 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2486 | continue; |
| 2487 | } |
| 2488 | hasit = PyObject_HasAttr(mod, item); |
| 2489 | if (!hasit) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2490 | char *subname = PyString_AS_STRING(item); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2491 | PyObject *submod; |
| 2492 | char *p; |
| 2493 | if (buflen + strlen(subname) >= MAXPATHLEN) { |
| 2494 | PyErr_SetString(PyExc_ValueError, |
| 2495 | "Module name too long"); |
| 2496 | Py_DECREF(item); |
| 2497 | return 0; |
| 2498 | } |
| 2499 | p = buf + buflen; |
| 2500 | *p++ = '.'; |
| 2501 | strcpy(p, subname); |
| 2502 | submod = import_submodule(mod, subname, buf); |
| 2503 | Py_XDECREF(submod); |
| 2504 | if (submod == NULL) { |
| 2505 | Py_DECREF(item); |
| 2506 | return 0; |
| 2507 | } |
| 2508 | } |
| 2509 | Py_DECREF(item); |
| 2510 | } |
| 2511 | |
Guido van Rossum | a7f2e81 | 1997-10-03 15:33:32 +0000 | [diff] [blame] | 2512 | /* NOTREACHED */ |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2513 | } |
| 2514 | |
Neil Schemenauer | 00b0966 | 2003-06-16 21:03:07 +0000 | [diff] [blame] | 2515 | static int |
| 2516 | add_submodule(PyObject *mod, PyObject *submod, char *fullname, char *subname, |
| 2517 | PyObject *modules) |
| 2518 | { |
| 2519 | if (mod == Py_None) |
| 2520 | return 1; |
| 2521 | /* Irrespective of the success of this load, make a |
| 2522 | reference to it in the parent package module. A copy gets |
| 2523 | saved in the modules dictionary under the full name, so get a |
| 2524 | reference from there, if need be. (The exception is when the |
| 2525 | load failed with a SyntaxError -- then there's no trace in |
| 2526 | sys.modules. In that case, of course, do nothing extra.) */ |
| 2527 | if (submod == NULL) { |
| 2528 | submod = PyDict_GetItemString(modules, fullname); |
| 2529 | if (submod == NULL) |
| 2530 | return 1; |
| 2531 | } |
| 2532 | if (PyModule_Check(mod)) { |
| 2533 | /* We can't use setattr here since it can give a |
| 2534 | * spurious warning if the submodule name shadows a |
| 2535 | * builtin name */ |
| 2536 | PyObject *dict = PyModule_GetDict(mod); |
| 2537 | if (!dict) |
| 2538 | return 0; |
| 2539 | if (PyDict_SetItemString(dict, subname, submod) < 0) |
| 2540 | return 0; |
| 2541 | } |
| 2542 | else { |
| 2543 | if (PyObject_SetAttrString(mod, subname, submod) < 0) |
| 2544 | return 0; |
| 2545 | } |
| 2546 | return 1; |
| 2547 | } |
| 2548 | |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2549 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2550 | import_submodule(PyObject *mod, char *subname, char *fullname) |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2551 | { |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 2552 | PyObject *modules = PyImport_GetModuleDict(); |
Neil Schemenauer | 00b0966 | 2003-06-16 21:03:07 +0000 | [diff] [blame] | 2553 | PyObject *m = NULL; |
Guido van Rossum | 74e6a11 | 1994-08-29 12:54:38 +0000 | [diff] [blame] | 2554 | |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2555 | /* Require: |
| 2556 | if mod == None: subname == fullname |
| 2557 | else: mod.__name__ + "." + subname == fullname |
| 2558 | */ |
| 2559 | |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 2560 | if ((m = PyDict_GetItemString(modules, fullname)) != NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2561 | Py_INCREF(m); |
Guido van Rossum | 7f9fa97 | 1995-01-20 16:53:12 +0000 | [diff] [blame] | 2562 | } |
| 2563 | else { |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 2564 | PyObject *path, *loader = NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2565 | char buf[MAXPATHLEN+1]; |
| 2566 | struct filedescr *fdp; |
| 2567 | FILE *fp = NULL; |
| 2568 | |
Guido van Rossum | 9c0afe5 | 1998-05-19 15:09:05 +0000 | [diff] [blame] | 2569 | if (mod == Py_None) |
| 2570 | path = NULL; |
| 2571 | else { |
| 2572 | path = PyObject_GetAttrString(mod, "__path__"); |
| 2573 | if (path == NULL) { |
| 2574 | PyErr_Clear(); |
| 2575 | Py_INCREF(Py_None); |
| 2576 | return Py_None; |
| 2577 | } |
| 2578 | } |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2579 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2580 | buf[0] = '\0'; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 2581 | fdp = find_module(fullname, subname, path, buf, MAXPATHLEN+1, |
| 2582 | &fp, &loader); |
Guido van Rossum | b68cd42 | 1998-07-01 17:36:26 +0000 | [diff] [blame] | 2583 | Py_XDECREF(path); |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2584 | if (fdp == NULL) { |
| 2585 | if (!PyErr_ExceptionMatches(PyExc_ImportError)) |
| 2586 | return NULL; |
| 2587 | PyErr_Clear(); |
| 2588 | Py_INCREF(Py_None); |
| 2589 | return Py_None; |
| 2590 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 2591 | m = load_module(fullname, fp, buf, fdp->type, loader); |
| 2592 | Py_XDECREF(loader); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2593 | if (fp) |
| 2594 | fclose(fp); |
Neil Schemenauer | 00b0966 | 2003-06-16 21:03:07 +0000 | [diff] [blame] | 2595 | if (!add_submodule(mod, m, fullname, subname, modules)) { |
| 2596 | Py_XDECREF(m); |
| 2597 | m = NULL; |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2598 | } |
Guido van Rossum | 74e6a11 | 1994-08-29 12:54:38 +0000 | [diff] [blame] | 2599 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2600 | |
| 2601 | return m; |
Guido van Rossum | 74e6a11 | 1994-08-29 12:54:38 +0000 | [diff] [blame] | 2602 | } |
| 2603 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2604 | |
| 2605 | /* Re-import a module of any kind and return its module object, WITH |
| 2606 | INCREMENTED REFERENCE COUNT */ |
| 2607 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2608 | PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2609 | PyImport_ReloadModule(PyObject *m) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2610 | { |
Collin Winter | 47c52a8 | 2007-03-13 23:02:15 +0000 | [diff] [blame] | 2611 | PyInterpreterState *interp = PyThreadState_Get()->interp; |
| 2612 | PyObject *modules_reloading = interp->modules_reloading; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 2613 | PyObject *modules = PyImport_GetModuleDict(); |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 2614 | PyObject *path = NULL, *loader = NULL, *existing_m = NULL; |
Guido van Rossum | 222ef56 | 1997-09-06 19:41:09 +0000 | [diff] [blame] | 2615 | char *name, *subname; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2616 | char buf[MAXPATHLEN+1]; |
| 2617 | struct filedescr *fdp; |
| 2618 | FILE *fp = NULL; |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 2619 | PyObject *newm; |
Collin Winter | 47c52a8 | 2007-03-13 23:02:15 +0000 | [diff] [blame] | 2620 | |
| 2621 | if (modules_reloading == NULL) { |
| 2622 | Py_FatalError("PyImport_ReloadModule: " |
Neal Norwitz | 2fca81c | 2007-05-30 04:53:41 +0000 | [diff] [blame] | 2623 | "no modules_reloading dictionary!"); |
Collin Winter | 47c52a8 | 2007-03-13 23:02:15 +0000 | [diff] [blame] | 2624 | return NULL; |
| 2625 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2626 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2627 | if (m == NULL || !PyModule_Check(m)) { |
| 2628 | PyErr_SetString(PyExc_TypeError, |
| 2629 | "reload() argument must be module"); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2630 | return NULL; |
| 2631 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2632 | name = PyModule_GetName(m); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2633 | if (name == NULL) |
| 2634 | return NULL; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 2635 | if (m != PyDict_GetItemString(modules, name)) { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2636 | PyErr_Format(PyExc_ImportError, |
| 2637 | "reload(): module %.200s not in sys.modules", |
| 2638 | name); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2639 | return NULL; |
| 2640 | } |
Neal Norwitz | 75c7c80 | 2007-03-13 05:31:38 +0000 | [diff] [blame] | 2641 | existing_m = PyDict_GetItemString(modules_reloading, name); |
| 2642 | if (existing_m != NULL) { |
| 2643 | /* Due to a recursive reload, this module is already |
| 2644 | being reloaded. */ |
| 2645 | Py_INCREF(existing_m); |
| 2646 | return existing_m; |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 2647 | } |
Neal Norwitz | 75c7c80 | 2007-03-13 05:31:38 +0000 | [diff] [blame] | 2648 | if (PyDict_SetItemString(modules_reloading, name, m) < 0) |
| 2649 | return NULL; |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 2650 | |
Guido van Rossum | 222ef56 | 1997-09-06 19:41:09 +0000 | [diff] [blame] | 2651 | subname = strrchr(name, '.'); |
| 2652 | if (subname == NULL) |
| 2653 | subname = name; |
| 2654 | else { |
| 2655 | PyObject *parentname, *parent; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2656 | parentname = PyString_FromStringAndSize(name, (subname-name)); |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 2657 | if (parentname == NULL) { |
| 2658 | imp_modules_reloading_clear(); |
Guido van Rossum | 222ef56 | 1997-09-06 19:41:09 +0000 | [diff] [blame] | 2659 | return NULL; |
Neal Norwitz | 75c7c80 | 2007-03-13 05:31:38 +0000 | [diff] [blame] | 2660 | } |
Guido van Rossum | 222ef56 | 1997-09-06 19:41:09 +0000 | [diff] [blame] | 2661 | parent = PyDict_GetItem(modules, parentname); |
| 2662 | if (parent == NULL) { |
| 2663 | PyErr_Format(PyExc_ImportError, |
| 2664 | "reload(): parent %.200s not in sys.modules", |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2665 | PyString_AS_STRING(parentname)); |
Georg Brandl | 0c55f29 | 2005-09-14 06:56:20 +0000 | [diff] [blame] | 2666 | Py_DECREF(parentname); |
Neal Norwitz | 2fca81c | 2007-05-30 04:53:41 +0000 | [diff] [blame] | 2667 | imp_modules_reloading_clear(); |
Guido van Rossum | 222ef56 | 1997-09-06 19:41:09 +0000 | [diff] [blame] | 2668 | return NULL; |
| 2669 | } |
Georg Brandl | 0c55f29 | 2005-09-14 06:56:20 +0000 | [diff] [blame] | 2670 | Py_DECREF(parentname); |
Guido van Rossum | 222ef56 | 1997-09-06 19:41:09 +0000 | [diff] [blame] | 2671 | subname++; |
| 2672 | path = PyObject_GetAttrString(parent, "__path__"); |
| 2673 | if (path == NULL) |
| 2674 | PyErr_Clear(); |
| 2675 | } |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2676 | buf[0] = '\0'; |
Phillip J. Eby | 7ec642a | 2004-09-23 04:37:36 +0000 | [diff] [blame] | 2677 | fdp = find_module(name, subname, path, buf, MAXPATHLEN+1, &fp, &loader); |
Guido van Rossum | 222ef56 | 1997-09-06 19:41:09 +0000 | [diff] [blame] | 2678 | Py_XDECREF(path); |
Phillip J. Eby | 7ec642a | 2004-09-23 04:37:36 +0000 | [diff] [blame] | 2679 | |
| 2680 | if (fdp == NULL) { |
| 2681 | Py_XDECREF(loader); |
Collin Winter | 276887b | 2007-03-12 16:11:39 +0000 | [diff] [blame] | 2682 | imp_modules_reloading_clear(); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2683 | return NULL; |
Phillip J. Eby | 7ec642a | 2004-09-23 04:37:36 +0000 | [diff] [blame] | 2684 | } |
| 2685 | |
| 2686 | newm = load_module(name, fp, buf, fdp->type, loader); |
| 2687 | Py_XDECREF(loader); |
| 2688 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2689 | if (fp) |
| 2690 | fclose(fp); |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 2691 | if (newm == NULL) { |
| 2692 | /* load_module probably removed name from modules because of |
| 2693 | * the error. Put back the original module object. We're |
| 2694 | * going to return NULL in this case regardless of whether |
| 2695 | * replacing name succeeds, so the return value is ignored. |
| 2696 | */ |
| 2697 | PyDict_SetItemString(modules, name, m); |
| 2698 | } |
Neal Norwitz | 75c7c80 | 2007-03-13 05:31:38 +0000 | [diff] [blame] | 2699 | imp_modules_reloading_clear(); |
Tim Peters | 1cd7017 | 2004-08-02 03:52:12 +0000 | [diff] [blame] | 2700 | return newm; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2701 | } |
| 2702 | |
| 2703 | |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2704 | /* Higher-level import emulator which emulates the "import" statement |
| 2705 | more accurately -- it invokes the __import__() function from the |
| 2706 | builtins of the current globals. This means that the import is |
| 2707 | done using whatever import hooks are installed in the current |
Guido van Rossum | 6058eb4 | 1998-12-21 19:51:00 +0000 | [diff] [blame] | 2708 | environment, e.g. by "rexec". |
| 2709 | A dummy list ["__doc__"] is passed as the 4th argument so that |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2710 | e.g. PyImport_Import(PyString_FromString("win32com.client.gencache")) |
Guido van Rossum | 6058eb4 | 1998-12-21 19:51:00 +0000 | [diff] [blame] | 2711 | will return <module "gencache"> instead of <module "win32com">. */ |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2712 | |
| 2713 | PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2714 | PyImport_Import(PyObject *module_name) |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2715 | { |
| 2716 | static PyObject *silly_list = NULL; |
| 2717 | static PyObject *builtins_str = NULL; |
| 2718 | static PyObject *import_str = NULL; |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2719 | PyObject *globals = NULL; |
| 2720 | PyObject *import = NULL; |
| 2721 | PyObject *builtins = NULL; |
| 2722 | PyObject *r = NULL; |
| 2723 | |
| 2724 | /* Initialize constant string objects */ |
| 2725 | if (silly_list == NULL) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2726 | import_str = PyString_InternFromString("__import__"); |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2727 | if (import_str == NULL) |
| 2728 | return NULL; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2729 | builtins_str = PyString_InternFromString("__builtins__"); |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2730 | if (builtins_str == NULL) |
| 2731 | return NULL; |
| 2732 | silly_list = Py_BuildValue("[s]", "__doc__"); |
| 2733 | if (silly_list == NULL) |
| 2734 | return NULL; |
| 2735 | } |
| 2736 | |
| 2737 | /* Get the builtins from current globals */ |
| 2738 | globals = PyEval_GetGlobals(); |
Guido van Rossum | 85cd1d6 | 2001-02-20 21:43:24 +0000 | [diff] [blame] | 2739 | if (globals != NULL) { |
Guido van Rossum | 6646856 | 1998-10-22 15:46:50 +0000 | [diff] [blame] | 2740 | Py_INCREF(globals); |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2741 | builtins = PyObject_GetItem(globals, builtins_str); |
| 2742 | if (builtins == NULL) |
| 2743 | goto err; |
| 2744 | } |
| 2745 | else { |
| 2746 | /* No globals -- use standard builtins, and fake globals */ |
| 2747 | PyErr_Clear(); |
| 2748 | |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2749 | builtins = PyImport_ImportModuleLevel("__builtin__", |
| 2750 | NULL, NULL, NULL, 0); |
Guido van Rossum | 85cd1d6 | 2001-02-20 21:43:24 +0000 | [diff] [blame] | 2751 | if (builtins == NULL) |
| 2752 | return NULL; |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2753 | globals = Py_BuildValue("{OO}", builtins_str, builtins); |
| 2754 | if (globals == NULL) |
| 2755 | goto err; |
| 2756 | } |
| 2757 | |
| 2758 | /* Get the __import__ function from the builtins */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2759 | if (PyDict_Check(builtins)) { |
Fred Drake | a76ba6e | 2001-03-06 06:31:15 +0000 | [diff] [blame] | 2760 | import = PyObject_GetItem(builtins, import_str); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2761 | if (import == NULL) |
| 2762 | PyErr_SetObject(PyExc_KeyError, import_str); |
| 2763 | } |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2764 | else |
Fred Drake | a76ba6e | 2001-03-06 06:31:15 +0000 | [diff] [blame] | 2765 | import = PyObject_GetAttr(builtins, import_str); |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2766 | if (import == NULL) |
| 2767 | goto err; |
| 2768 | |
Christian Heimes | 000a074 | 2008-01-03 22:16:32 +0000 | [diff] [blame] | 2769 | /* Call the __import__ function with the proper argument list |
| 2770 | * Always use absolute import here. */ |
| 2771 | r = PyObject_CallFunction(import, "OOOOi", module_name, globals, |
| 2772 | globals, silly_list, 0, NULL); |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2773 | |
| 2774 | err: |
| 2775 | Py_XDECREF(globals); |
| 2776 | Py_XDECREF(builtins); |
| 2777 | Py_XDECREF(import); |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 2778 | |
Guido van Rossum | d47a0a8 | 1997-08-14 20:11:26 +0000 | [diff] [blame] | 2779 | return r; |
| 2780 | } |
| 2781 | |
| 2782 | |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2783 | /* Module 'imp' provides Python access to the primitives used for |
| 2784 | importing modules. |
| 2785 | */ |
| 2786 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2787 | static PyObject * |
Neal Norwitz | 08ea61a | 2003-02-17 18:18:00 +0000 | [diff] [blame] | 2788 | imp_get_magic(PyObject *self, PyObject *noargs) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2789 | { |
| 2790 | char buf[4]; |
| 2791 | |
Guido van Rossum | 96774c1 | 2000-05-01 20:19:08 +0000 | [diff] [blame] | 2792 | buf[0] = (char) ((pyc_magic >> 0) & 0xff); |
| 2793 | buf[1] = (char) ((pyc_magic >> 8) & 0xff); |
| 2794 | buf[2] = (char) ((pyc_magic >> 16) & 0xff); |
| 2795 | buf[3] = (char) ((pyc_magic >> 24) & 0xff); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2796 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2797 | return PyString_FromStringAndSize(buf, 4); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2798 | } |
| 2799 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2800 | static PyObject * |
Neal Norwitz | 08ea61a | 2003-02-17 18:18:00 +0000 | [diff] [blame] | 2801 | imp_get_suffixes(PyObject *self, PyObject *noargs) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2802 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2803 | PyObject *list; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2804 | struct filedescr *fdp; |
| 2805 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2806 | list = PyList_New(0); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2807 | if (list == NULL) |
| 2808 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2809 | for (fdp = _PyImport_Filetab; fdp->suffix != NULL; fdp++) { |
| 2810 | PyObject *item = Py_BuildValue("ssi", |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2811 | fdp->suffix, fdp->mode, fdp->type); |
| 2812 | if (item == NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2813 | Py_DECREF(list); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2814 | return NULL; |
| 2815 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2816 | if (PyList_Append(list, item) < 0) { |
| 2817 | Py_DECREF(list); |
| 2818 | Py_DECREF(item); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2819 | return NULL; |
| 2820 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2821 | Py_DECREF(item); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2822 | } |
| 2823 | return list; |
| 2824 | } |
| 2825 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2826 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2827 | call_find_module(char *name, PyObject *path) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2828 | { |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 2829 | extern int fclose(FILE *); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2830 | PyObject *fob, *ret; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2831 | struct filedescr *fdp; |
| 2832 | char pathname[MAXPATHLEN+1]; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2833 | FILE *fp = NULL; |
| 2834 | |
| 2835 | pathname[0] = '\0'; |
Guido van Rossum | 17fc85f | 1997-09-06 18:52:03 +0000 | [diff] [blame] | 2836 | if (path == Py_None) |
| 2837 | path = NULL; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 2838 | fdp = find_module(NULL, name, path, pathname, MAXPATHLEN+1, &fp, NULL); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2839 | if (fdp == NULL) |
| 2840 | return NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2841 | if (fp != NULL) { |
| 2842 | fob = PyFile_FromFile(fp, pathname, fdp->mode, fclose); |
| 2843 | if (fob == NULL) { |
| 2844 | fclose(fp); |
| 2845 | return NULL; |
| 2846 | } |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2847 | } |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2848 | else { |
| 2849 | fob = Py_None; |
| 2850 | Py_INCREF(fob); |
Tim Peters | 50d8d37 | 2001-02-28 05:34:27 +0000 | [diff] [blame] | 2851 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2852 | ret = Py_BuildValue("Os(ssi)", |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2853 | fob, pathname, fdp->suffix, fdp->mode, fdp->type); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2854 | Py_DECREF(fob); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2855 | return ret; |
| 2856 | } |
| 2857 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2858 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2859 | imp_find_module(PyObject *self, PyObject *args) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2860 | { |
| 2861 | char *name; |
| 2862 | PyObject *path = NULL; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2863 | if (!PyArg_ParseTuple(args, "s|O:find_module", &name, &path)) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2864 | return NULL; |
| 2865 | return call_find_module(name, path); |
| 2866 | } |
| 2867 | |
| 2868 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2869 | imp_init_builtin(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2870 | { |
| 2871 | char *name; |
| 2872 | int ret; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2873 | PyObject *m; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2874 | if (!PyArg_ParseTuple(args, "s:init_builtin", &name)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2875 | return NULL; |
| 2876 | ret = init_builtin(name); |
| 2877 | if (ret < 0) |
| 2878 | return NULL; |
| 2879 | if (ret == 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2880 | Py_INCREF(Py_None); |
| 2881 | return Py_None; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2882 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2883 | m = PyImport_AddModule(name); |
| 2884 | Py_XINCREF(m); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2885 | return m; |
| 2886 | } |
| 2887 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2888 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2889 | imp_init_frozen(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2890 | { |
| 2891 | char *name; |
| 2892 | int ret; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2893 | PyObject *m; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2894 | if (!PyArg_ParseTuple(args, "s:init_frozen", &name)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2895 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2896 | ret = PyImport_ImportFrozenModule(name); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2897 | if (ret < 0) |
| 2898 | return NULL; |
| 2899 | if (ret == 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2900 | Py_INCREF(Py_None); |
| 2901 | return Py_None; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2902 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2903 | m = PyImport_AddModule(name); |
| 2904 | Py_XINCREF(m); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2905 | return m; |
| 2906 | } |
| 2907 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2908 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2909 | imp_get_frozen_object(PyObject *self, PyObject *args) |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 2910 | { |
| 2911 | char *name; |
Jack Jansen | 95ffa23 | 1995-10-03 14:38:41 +0000 | [diff] [blame] | 2912 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2913 | if (!PyArg_ParseTuple(args, "s:get_frozen_object", &name)) |
Guido van Rossum | 6ec1efb | 1995-08-04 04:08:57 +0000 | [diff] [blame] | 2914 | return NULL; |
| 2915 | return get_frozen_object(name); |
| 2916 | } |
| 2917 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2918 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2919 | imp_is_builtin(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2920 | { |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2921 | char *name; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2922 | if (!PyArg_ParseTuple(args, "s:is_builtin", &name)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2923 | return NULL; |
Guido van Rossum | 50ee94f | 2002-04-09 18:00:58 +0000 | [diff] [blame] | 2924 | return PyInt_FromLong(is_builtin(name)); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2925 | } |
| 2926 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2927 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2928 | imp_is_frozen(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2929 | { |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2930 | char *name; |
Guido van Rossum | 323bf5e | 1998-06-24 03:54:06 +0000 | [diff] [blame] | 2931 | struct _frozen *p; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2932 | if (!PyArg_ParseTuple(args, "s:is_frozen", &name)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2933 | return NULL; |
Guido van Rossum | 323bf5e | 1998-06-24 03:54:06 +0000 | [diff] [blame] | 2934 | p = find_frozen(name); |
Guido van Rossum | b8bff3f | 2002-04-07 06:34:38 +0000 | [diff] [blame] | 2935 | return PyBool_FromLong((long) (p == NULL ? 0 : p->size)); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2936 | } |
| 2937 | |
| 2938 | static FILE * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2939 | get_file(char *pathname, PyObject *fob, char *mode) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2940 | { |
| 2941 | FILE *fp; |
| 2942 | if (fob == NULL) { |
Tim Peters | 86c7d2f | 2004-08-01 23:24:21 +0000 | [diff] [blame] | 2943 | if (mode[0] == 'U') |
Jeremy Hylton | 4ae6fae | 2002-05-30 17:15:25 +0000 | [diff] [blame] | 2944 | mode = "r" PY_STDIOTEXTMODE; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2945 | fp = fopen(pathname, mode); |
| 2946 | if (fp == NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2947 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2948 | } |
| 2949 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2950 | fp = PyFile_AsFile(fob); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2951 | if (fp == NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2952 | PyErr_SetString(PyExc_ValueError, |
| 2953 | "bad/closed file object"); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2954 | } |
| 2955 | return fp; |
| 2956 | } |
| 2957 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2958 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2959 | imp_load_compiled(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2960 | { |
| 2961 | char *name; |
| 2962 | char *pathname; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2963 | PyObject *fob = NULL; |
| 2964 | PyObject *m; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2965 | FILE *fp; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2966 | if (!PyArg_ParseTuple(args, "ss|O!:load_compiled", &name, &pathname, |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2967 | &PyFile_Type, &fob)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2968 | return NULL; |
| 2969 | fp = get_file(pathname, fob, "rb"); |
| 2970 | if (fp == NULL) |
| 2971 | return NULL; |
| 2972 | m = load_compiled_module(name, pathname, fp); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2973 | if (fob == NULL) |
| 2974 | fclose(fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2975 | return m; |
| 2976 | } |
| 2977 | |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 2978 | #ifdef HAVE_DYNAMIC_LOADING |
| 2979 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2980 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2981 | imp_load_dynamic(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2982 | { |
| 2983 | char *name; |
| 2984 | char *pathname; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2985 | PyObject *fob = NULL; |
| 2986 | PyObject *m; |
Guido van Rossum | 7faeab3 | 1995-07-07 22:50:36 +0000 | [diff] [blame] | 2987 | FILE *fp = NULL; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 2988 | if (!PyArg_ParseTuple(args, "ss|O!:load_dynamic", &name, &pathname, |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2989 | &PyFile_Type, &fob)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2990 | return NULL; |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2991 | if (fob) { |
Guido van Rossum | 7faeab3 | 1995-07-07 22:50:36 +0000 | [diff] [blame] | 2992 | fp = get_file(pathname, fob, "r"); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 2993 | if (fp == NULL) |
| 2994 | return NULL; |
| 2995 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2996 | m = _PyImport_LoadDynamicModule(name, pathname, fp); |
Guido van Rossum | 7faeab3 | 1995-07-07 22:50:36 +0000 | [diff] [blame] | 2997 | return m; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 2998 | } |
| 2999 | |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 3000 | #endif /* HAVE_DYNAMIC_LOADING */ |
| 3001 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3002 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3003 | imp_load_source(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3004 | { |
| 3005 | char *name; |
| 3006 | char *pathname; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3007 | PyObject *fob = NULL; |
| 3008 | PyObject *m; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3009 | FILE *fp; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 3010 | if (!PyArg_ParseTuple(args, "ss|O!:load_source", &name, &pathname, |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3011 | &PyFile_Type, &fob)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3012 | return NULL; |
| 3013 | fp = get_file(pathname, fob, "r"); |
| 3014 | if (fp == NULL) |
| 3015 | return NULL; |
| 3016 | m = load_source_module(name, pathname, fp); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3017 | if (fob == NULL) |
| 3018 | fclose(fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3019 | return m; |
| 3020 | } |
| 3021 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3022 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3023 | imp_load_module(PyObject *self, PyObject *args) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3024 | { |
| 3025 | char *name; |
| 3026 | PyObject *fob; |
| 3027 | char *pathname; |
| 3028 | char *suffix; /* Unused */ |
| 3029 | char *mode; |
| 3030 | int type; |
| 3031 | FILE *fp; |
| 3032 | |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 3033 | if (!PyArg_ParseTuple(args, "sOs(ssi):load_module", |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3034 | &name, &fob, &pathname, |
| 3035 | &suffix, &mode, &type)) |
| 3036 | return NULL; |
Guido van Rossum | 5e2c5fa | 2002-05-30 17:33:07 +0000 | [diff] [blame] | 3037 | if (*mode) { |
| 3038 | /* Mode must start with 'r' or 'U' and must not contain '+'. |
| 3039 | Implicit in this test is the assumption that the mode |
| 3040 | may contain other modifiers like 'b' or 't'. */ |
| 3041 | |
| 3042 | if (!(*mode == 'r' || *mode == 'U') || strchr(mode, '+')) { |
Jeremy Hylton | 4ae6fae | 2002-05-30 17:15:25 +0000 | [diff] [blame] | 3043 | PyErr_Format(PyExc_ValueError, |
| 3044 | "invalid file open mode %.200s", mode); |
| 3045 | return NULL; |
Guido van Rossum | 5e2c5fa | 2002-05-30 17:33:07 +0000 | [diff] [blame] | 3046 | } |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3047 | } |
| 3048 | if (fob == Py_None) |
| 3049 | fp = NULL; |
| 3050 | else { |
| 3051 | if (!PyFile_Check(fob)) { |
| 3052 | PyErr_SetString(PyExc_ValueError, |
| 3053 | "load_module arg#2 should be a file or None"); |
| 3054 | return NULL; |
| 3055 | } |
| 3056 | fp = get_file(pathname, fob, mode); |
| 3057 | if (fp == NULL) |
| 3058 | return NULL; |
| 3059 | } |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 3060 | return load_module(name, fp, pathname, type, NULL); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3061 | } |
| 3062 | |
| 3063 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3064 | imp_load_package(PyObject *self, PyObject *args) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3065 | { |
| 3066 | char *name; |
| 3067 | char *pathname; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 3068 | if (!PyArg_ParseTuple(args, "ss:load_package", &name, &pathname)) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3069 | return NULL; |
| 3070 | return load_package(name, pathname); |
| 3071 | } |
| 3072 | |
| 3073 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3074 | imp_new_module(PyObject *self, PyObject *args) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3075 | { |
| 3076 | char *name; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 3077 | if (!PyArg_ParseTuple(args, "s:new_module", &name)) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3078 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3079 | return PyModule_New(name); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3080 | } |
| 3081 | |
Brett Cannon | 3aa2a49 | 2008-08-06 22:28:09 +0000 | [diff] [blame] | 3082 | static PyObject * |
| 3083 | imp_reload(PyObject *self, PyObject *v) |
| 3084 | { |
| 3085 | return PyImport_ReloadModule(v); |
| 3086 | } |
| 3087 | |
| 3088 | |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3089 | /* Doc strings */ |
| 3090 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3091 | PyDoc_STRVAR(doc_imp, |
| 3092 | "This module provides the components needed to build your own\n\ |
| 3093 | __import__ function. Undocumented functions are obsolete."); |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3094 | |
Brett Cannon | 3aa2a49 | 2008-08-06 22:28:09 +0000 | [diff] [blame] | 3095 | PyDoc_STRVAR(doc_reload, |
| 3096 | "reload(module) -> module\n\ |
| 3097 | \n\ |
| 3098 | Reload the module. The module must have been successfully imported before."); |
| 3099 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3100 | PyDoc_STRVAR(doc_find_module, |
| 3101 | "find_module(name, [path]) -> (file, filename, (suffix, mode, type))\n\ |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3102 | Search for a module. If path is omitted or None, search for a\n\ |
| 3103 | built-in, frozen or special module and continue search in sys.path.\n\ |
| 3104 | The module name cannot contain '.'; to search for a submodule of a\n\ |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3105 | package, pass the submodule name and the package's __path__."); |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3106 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3107 | PyDoc_STRVAR(doc_load_module, |
| 3108 | "load_module(name, file, filename, (suffix, mode, type)) -> module\n\ |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3109 | Load a module, given information returned by find_module().\n\ |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3110 | The module name must include the full package name, if any."); |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3111 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3112 | PyDoc_STRVAR(doc_get_magic, |
| 3113 | "get_magic() -> string\n\ |
| 3114 | Return the magic number for .pyc or .pyo files."); |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3115 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3116 | PyDoc_STRVAR(doc_get_suffixes, |
| 3117 | "get_suffixes() -> [(suffix, mode, type), ...]\n\ |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3118 | Return a list of (suffix, mode, type) tuples describing the files\n\ |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3119 | that find_module() looks for."); |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3120 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3121 | PyDoc_STRVAR(doc_new_module, |
| 3122 | "new_module(name) -> module\n\ |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3123 | Create a new module. Do not enter it in sys.modules.\n\ |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3124 | The module name must include the full package name, if any."); |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3125 | |
Martin v. Löwis | 14f8b4c | 2002-06-13 20:33:02 +0000 | [diff] [blame] | 3126 | PyDoc_STRVAR(doc_lock_held, |
Tim Peters | a7c6509 | 2004-08-01 23:26:05 +0000 | [diff] [blame] | 3127 | "lock_held() -> boolean\n\ |
| 3128 | Return True if the import lock is currently held, else False.\n\ |
| 3129 | On platforms without threads, return False."); |
Tim Peters | 6923234 | 2001-08-30 05:16:13 +0000 | [diff] [blame] | 3130 | |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 3131 | PyDoc_STRVAR(doc_acquire_lock, |
| 3132 | "acquire_lock() -> None\n\ |
Neal Norwitz | 2294c0d | 2003-02-12 23:02:21 +0000 | [diff] [blame] | 3133 | Acquires the interpreter's import lock for the current thread.\n\ |
| 3134 | This lock should be used by import hooks to ensure thread-safety\n\ |
| 3135 | when importing modules.\n\ |
Guido van Rossum | c4f4ca9 | 2003-02-12 21:46:11 +0000 | [diff] [blame] | 3136 | On platforms without threads, this function does nothing."); |
| 3137 | |
| 3138 | PyDoc_STRVAR(doc_release_lock, |
| 3139 | "release_lock() -> None\n\ |
| 3140 | Release the interpreter's import lock.\n\ |
| 3141 | On platforms without threads, this function does nothing."); |
| 3142 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3143 | static PyMethodDef imp_methods[] = { |
Brett Cannon | 3aa2a49 | 2008-08-06 22:28:09 +0000 | [diff] [blame] | 3144 | {"reload", imp_reload, METH_O, doc_reload}, |
Neal Norwitz | 08ea61a | 2003-02-17 18:18:00 +0000 | [diff] [blame] | 3145 | {"find_module", imp_find_module, METH_VARARGS, doc_find_module}, |
| 3146 | {"get_magic", imp_get_magic, METH_NOARGS, doc_get_magic}, |
| 3147 | {"get_suffixes", imp_get_suffixes, METH_NOARGS, doc_get_suffixes}, |
| 3148 | {"load_module", imp_load_module, METH_VARARGS, doc_load_module}, |
| 3149 | {"new_module", imp_new_module, METH_VARARGS, doc_new_module}, |
| 3150 | {"lock_held", imp_lock_held, METH_NOARGS, doc_lock_held}, |
| 3151 | {"acquire_lock", imp_acquire_lock, METH_NOARGS, doc_acquire_lock}, |
| 3152 | {"release_lock", imp_release_lock, METH_NOARGS, doc_release_lock}, |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3153 | /* The rest are obsolete */ |
Neal Norwitz | 031829d | 2002-03-31 14:37:44 +0000 | [diff] [blame] | 3154 | {"get_frozen_object", imp_get_frozen_object, METH_VARARGS}, |
| 3155 | {"init_builtin", imp_init_builtin, METH_VARARGS}, |
| 3156 | {"init_frozen", imp_init_frozen, METH_VARARGS}, |
| 3157 | {"is_builtin", imp_is_builtin, METH_VARARGS}, |
| 3158 | {"is_frozen", imp_is_frozen, METH_VARARGS}, |
| 3159 | {"load_compiled", imp_load_compiled, METH_VARARGS}, |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 3160 | #ifdef HAVE_DYNAMIC_LOADING |
Neal Norwitz | 031829d | 2002-03-31 14:37:44 +0000 | [diff] [blame] | 3161 | {"load_dynamic", imp_load_dynamic, METH_VARARGS}, |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 3162 | #endif |
Neal Norwitz | 031829d | 2002-03-31 14:37:44 +0000 | [diff] [blame] | 3163 | {"load_package", imp_load_package, METH_VARARGS}, |
Neal Norwitz | 031829d | 2002-03-31 14:37:44 +0000 | [diff] [blame] | 3164 | {"load_source", imp_load_source, METH_VARARGS}, |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3165 | {NULL, NULL} /* sentinel */ |
| 3166 | }; |
| 3167 | |
Guido van Rossum | 1a8791e | 1998-08-04 22:46:29 +0000 | [diff] [blame] | 3168 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3169 | setint(PyObject *d, char *name, int value) |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3170 | { |
| 3171 | PyObject *v; |
| 3172 | int err; |
| 3173 | |
| 3174 | v = PyInt_FromLong((long)value); |
| 3175 | err = PyDict_SetItemString(d, name, v); |
| 3176 | Py_XDECREF(v); |
| 3177 | return err; |
| 3178 | } |
| 3179 | |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 3180 | typedef struct { |
| 3181 | PyObject_HEAD |
| 3182 | } NullImporter; |
| 3183 | |
| 3184 | static int |
| 3185 | NullImporter_init(NullImporter *self, PyObject *args, PyObject *kwds) |
| 3186 | { |
| 3187 | char *path; |
Christian Heimes | cea681b | 2007-11-07 17:50:54 +0000 | [diff] [blame] | 3188 | Py_ssize_t pathlen; |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 3189 | |
| 3190 | if (!_PyArg_NoKeywords("NullImporter()", kwds)) |
| 3191 | return -1; |
| 3192 | |
| 3193 | if (!PyArg_ParseTuple(args, "s:NullImporter", |
| 3194 | &path)) |
| 3195 | return -1; |
| 3196 | |
Christian Heimes | cea681b | 2007-11-07 17:50:54 +0000 | [diff] [blame] | 3197 | pathlen = strlen(path); |
| 3198 | if (pathlen == 0) { |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 3199 | PyErr_SetString(PyExc_ImportError, "empty pathname"); |
| 3200 | return -1; |
| 3201 | } else { |
| 3202 | #ifndef RISCOS |
Kristján Valur Jónsson | 3b2a6b8 | 2009-01-09 20:10:59 +0000 | [diff] [blame] | 3203 | #ifndef MS_WINDOWS |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 3204 | struct stat statbuf; |
| 3205 | int rv; |
| 3206 | |
| 3207 | rv = stat(path, &statbuf); |
| 3208 | if (rv == 0) { |
| 3209 | /* it exists */ |
| 3210 | if (S_ISDIR(statbuf.st_mode)) { |
| 3211 | /* it's a directory */ |
| 3212 | PyErr_SetString(PyExc_ImportError, |
| 3213 | "existing directory"); |
| 3214 | return -1; |
| 3215 | } |
| 3216 | } |
Kristján Valur Jónsson | 3b2a6b8 | 2009-01-09 20:10:59 +0000 | [diff] [blame] | 3217 | #else /* MS_WINDOWS */ |
| 3218 | DWORD rv; |
| 3219 | /* see issue1293 and issue3677: |
| 3220 | * stat() on Windows doesn't recognise paths like |
| 3221 | * "e:\\shared\\" and "\\\\whiterab-c2znlh\\shared" as dirs. |
| 3222 | */ |
| 3223 | rv = GetFileAttributesA(path); |
| 3224 | if (rv != INVALID_FILE_ATTRIBUTES) { |
| 3225 | /* it exists */ |
| 3226 | if (rv & FILE_ATTRIBUTE_DIRECTORY) { |
| 3227 | /* it's a directory */ |
| 3228 | PyErr_SetString(PyExc_ImportError, |
| 3229 | "existing directory"); |
| 3230 | return -1; |
| 3231 | } |
| 3232 | } |
| 3233 | #endif |
| 3234 | #else /* RISCOS */ |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 3235 | if (object_exists(path)) { |
| 3236 | /* it exists */ |
| 3237 | if (isdir(path)) { |
| 3238 | /* it's a directory */ |
| 3239 | PyErr_SetString(PyExc_ImportError, |
| 3240 | "existing directory"); |
| 3241 | return -1; |
| 3242 | } |
| 3243 | } |
| 3244 | #endif |
| 3245 | } |
| 3246 | return 0; |
| 3247 | } |
| 3248 | |
| 3249 | static PyObject * |
| 3250 | NullImporter_find_module(NullImporter *self, PyObject *args) |
| 3251 | { |
| 3252 | Py_RETURN_NONE; |
| 3253 | } |
| 3254 | |
| 3255 | static PyMethodDef NullImporter_methods[] = { |
| 3256 | {"find_module", (PyCFunction)NullImporter_find_module, METH_VARARGS, |
| 3257 | "Always return None" |
| 3258 | }, |
| 3259 | {NULL} /* Sentinel */ |
| 3260 | }; |
| 3261 | |
| 3262 | |
Nick Coghlan | 327a39b | 2007-11-18 11:56:28 +0000 | [diff] [blame] | 3263 | PyTypeObject PyNullImporter_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 3264 | PyVarObject_HEAD_INIT(NULL, 0) |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 3265 | "imp.NullImporter", /*tp_name*/ |
| 3266 | sizeof(NullImporter), /*tp_basicsize*/ |
| 3267 | 0, /*tp_itemsize*/ |
| 3268 | 0, /*tp_dealloc*/ |
| 3269 | 0, /*tp_print*/ |
| 3270 | 0, /*tp_getattr*/ |
| 3271 | 0, /*tp_setattr*/ |
| 3272 | 0, /*tp_compare*/ |
| 3273 | 0, /*tp_repr*/ |
| 3274 | 0, /*tp_as_number*/ |
| 3275 | 0, /*tp_as_sequence*/ |
| 3276 | 0, /*tp_as_mapping*/ |
| 3277 | 0, /*tp_hash */ |
| 3278 | 0, /*tp_call*/ |
| 3279 | 0, /*tp_str*/ |
| 3280 | 0, /*tp_getattro*/ |
| 3281 | 0, /*tp_setattro*/ |
| 3282 | 0, /*tp_as_buffer*/ |
| 3283 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| 3284 | "Null importer object", /* tp_doc */ |
| 3285 | 0, /* tp_traverse */ |
| 3286 | 0, /* tp_clear */ |
| 3287 | 0, /* tp_richcompare */ |
| 3288 | 0, /* tp_weaklistoffset */ |
| 3289 | 0, /* tp_iter */ |
| 3290 | 0, /* tp_iternext */ |
| 3291 | NullImporter_methods, /* tp_methods */ |
| 3292 | 0, /* tp_members */ |
| 3293 | 0, /* tp_getset */ |
| 3294 | 0, /* tp_base */ |
| 3295 | 0, /* tp_dict */ |
| 3296 | 0, /* tp_descr_get */ |
| 3297 | 0, /* tp_descr_set */ |
| 3298 | 0, /* tp_dictoffset */ |
| 3299 | (initproc)NullImporter_init, /* tp_init */ |
| 3300 | 0, /* tp_alloc */ |
| 3301 | PyType_GenericNew /* tp_new */ |
| 3302 | }; |
| 3303 | |
| 3304 | |
Jason Tishler | 6bc06ec | 2003-09-04 11:59:50 +0000 | [diff] [blame] | 3305 | PyMODINIT_FUNC |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3306 | initimp(void) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3307 | { |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3308 | PyObject *m, *d; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3309 | |
Nick Coghlan | 327a39b | 2007-11-18 11:56:28 +0000 | [diff] [blame] | 3310 | if (PyType_Ready(&PyNullImporter_Type) < 0) |
Phillip J. Eby | f7575d0 | 2006-07-28 21:12:07 +0000 | [diff] [blame] | 3311 | goto failure; |
| 3312 | |
Guido van Rossum | 0207e6d | 1997-09-09 22:04:42 +0000 | [diff] [blame] | 3313 | m = Py_InitModule4("imp", imp_methods, doc_imp, |
| 3314 | NULL, PYTHON_API_VERSION); |
Neal Norwitz | 1ac754f | 2006-01-19 06:09:39 +0000 | [diff] [blame] | 3315 | if (m == NULL) |
| 3316 | goto failure; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3317 | d = PyModule_GetDict(m); |
Neal Norwitz | 3cb31ac | 2006-08-13 18:10:47 +0000 | [diff] [blame] | 3318 | if (d == NULL) |
| 3319 | goto failure; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3320 | |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3321 | if (setint(d, "SEARCH_ERROR", SEARCH_ERROR) < 0) goto failure; |
| 3322 | if (setint(d, "PY_SOURCE", PY_SOURCE) < 0) goto failure; |
| 3323 | if (setint(d, "PY_COMPILED", PY_COMPILED) < 0) goto failure; |
| 3324 | if (setint(d, "C_EXTENSION", C_EXTENSION) < 0) goto failure; |
| 3325 | if (setint(d, "PY_RESOURCE", PY_RESOURCE) < 0) goto failure; |
| 3326 | if (setint(d, "PKG_DIRECTORY", PKG_DIRECTORY) < 0) goto failure; |
| 3327 | if (setint(d, "C_BUILTIN", C_BUILTIN) < 0) goto failure; |
| 3328 | if (setint(d, "PY_FROZEN", PY_FROZEN) < 0) goto failure; |
Guido van Rossum | 0f84a34 | 1998-08-06 13:36:01 +0000 | [diff] [blame] | 3329 | if (setint(d, "PY_CODERESOURCE", PY_CODERESOURCE) < 0) goto failure; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 3330 | if (setint(d, "IMP_HOOK", IMP_HOOK) < 0) goto failure; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3331 | |
Nick Coghlan | 327a39b | 2007-11-18 11:56:28 +0000 | [diff] [blame] | 3332 | Py_INCREF(&PyNullImporter_Type); |
| 3333 | PyModule_AddObject(m, "NullImporter", (PyObject *)&PyNullImporter_Type); |
Guido van Rossum | aee0bad | 1997-09-05 07:33:22 +0000 | [diff] [blame] | 3334 | failure: |
| 3335 | ; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 3336 | } |
Guido van Rossum | 09cae1f | 1998-05-14 02:32:54 +0000 | [diff] [blame] | 3337 | |
| 3338 | |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 3339 | /* API for embedding applications that want to add their own entries |
| 3340 | to the table of built-in modules. This should normally be called |
| 3341 | *before* Py_Initialize(). When the table resize fails, -1 is |
| 3342 | returned and the existing table is unchanged. |
Guido van Rossum | 09cae1f | 1998-05-14 02:32:54 +0000 | [diff] [blame] | 3343 | |
| 3344 | After a similar function by Just van Rossum. */ |
| 3345 | |
| 3346 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3347 | PyImport_ExtendInittab(struct _inittab *newtab) |
Guido van Rossum | 09cae1f | 1998-05-14 02:32:54 +0000 | [diff] [blame] | 3348 | { |
| 3349 | static struct _inittab *our_copy = NULL; |
| 3350 | struct _inittab *p; |
| 3351 | int i, n; |
| 3352 | |
| 3353 | /* Count the number of entries in both tables */ |
| 3354 | for (n = 0; newtab[n].name != NULL; n++) |
| 3355 | ; |
| 3356 | if (n == 0) |
| 3357 | return 0; /* Nothing to do */ |
| 3358 | for (i = 0; PyImport_Inittab[i].name != NULL; i++) |
| 3359 | ; |
| 3360 | |
| 3361 | /* Allocate new memory for the combined table */ |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 3362 | p = our_copy; |
| 3363 | PyMem_RESIZE(p, struct _inittab, i+n+1); |
Guido van Rossum | 09cae1f | 1998-05-14 02:32:54 +0000 | [diff] [blame] | 3364 | if (p == NULL) |
| 3365 | return -1; |
| 3366 | |
| 3367 | /* Copy the tables into the new memory */ |
| 3368 | if (our_copy != PyImport_Inittab) |
| 3369 | memcpy(p, PyImport_Inittab, (i+1) * sizeof(struct _inittab)); |
| 3370 | PyImport_Inittab = our_copy = p; |
| 3371 | memcpy(p+i, newtab, (n+1) * sizeof(struct _inittab)); |
| 3372 | |
| 3373 | return 0; |
| 3374 | } |
| 3375 | |
| 3376 | /* Shorthand to add a single entry given a name and a function */ |
| 3377 | |
| 3378 | int |
Brett Cannon | c4f90eb | 2009-04-02 03:17:39 +0000 | [diff] [blame] | 3379 | PyImport_AppendInittab(const char *name, void (*initfunc)(void)) |
Guido van Rossum | 09cae1f | 1998-05-14 02:32:54 +0000 | [diff] [blame] | 3380 | { |
| 3381 | struct _inittab newtab[2]; |
| 3382 | |
| 3383 | memset(newtab, '\0', sizeof newtab); |
| 3384 | |
Brett Cannon | 238cedc | 2009-04-02 03:34:53 +0000 | [diff] [blame] | 3385 | newtab[0].name = (char *)name; |
Guido van Rossum | 09cae1f | 1998-05-14 02:32:54 +0000 | [diff] [blame] | 3386 | newtab[0].initfunc = initfunc; |
| 3387 | |
| 3388 | return PyImport_ExtendInittab(newtab); |
| 3389 | } |
Anthony Baxter | ac6bd46 | 2006-04-13 02:06:09 +0000 | [diff] [blame] | 3390 | |
| 3391 | #ifdef __cplusplus |
| 3392 | } |
| 3393 | #endif |