Guido van Rossum | 582646a | 1996-05-28 22:30:17 +0000 | [diff] [blame] | 1 | /* Return the initial module search path. */ |
| 2 | |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 3 | #include "Python.h" |
| 4 | #include "osdefs.h" |
| 5 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 6 | #include <sys/types.h> |
Guido van Rossum | 21f8497 | 1997-06-02 22:18:31 +0000 | [diff] [blame] | 7 | #include <string.h> |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 8 | |
Brett Cannon | f6af76d | 2004-06-26 04:03:06 +0000 | [diff] [blame] | 9 | #ifdef __APPLE__ |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 10 | #include <mach-o/dyld.h> |
| 11 | #endif |
| 12 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 13 | /* Search in some common locations for the associated Python libraries. |
| 14 | * |
| 15 | * Two directories must be found, the platform independent directory |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 16 | * (prefix), containing the common .py and .pyc files, and the platform |
| 17 | * dependent directory (exec_prefix), containing the shared library |
| 18 | * modules. Note that prefix and exec_prefix can be the same directory, |
| 19 | * but for some installations, they are different. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 20 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 21 | * Py_GetPath() carries out separate searches for prefix and exec_prefix. |
| 22 | * Each search tries a number of different locations until a ``landmark'' |
| 23 | * file or directory is found. If no prefix or exec_prefix is found, a |
| 24 | * warning message is issued and the preprocessor defined PREFIX and |
| 25 | * EXEC_PREFIX are used (even though they will not work); python carries on |
| 26 | * as best as is possible, but most imports will fail. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 27 | * |
| 28 | * Before any searches are done, the location of the executable is |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 29 | * determined. If argv[0] has one or more slashes in it, it is used |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 30 | * unchanged. Otherwise, it must have been invoked from the shell's path, |
| 31 | * so we search $PATH for the named executable and use that. If the |
| 32 | * executable was not found on $PATH (or there was no $PATH environment |
| 33 | * variable), the original argv[0] string is used. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 34 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 35 | * Next, the executable location is examined to see if it is a symbolic |
| 36 | * link. If so, the link is chased (correctly interpreting a relative |
| 37 | * pathname if one is found) and the directory of the link target is used. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 38 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 39 | * Finally, argv0_path is set to the directory containing the executable |
| 40 | * (i.e. the last component is stripped). |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 41 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 42 | * With argv0_path in hand, we perform a number of steps. The same steps |
| 43 | * are performed for prefix and for exec_prefix, but with a different |
| 44 | * landmark. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 45 | * |
| 46 | * Step 1. Are we running python out of the build directory? This is |
| 47 | * checked by looking for a different kind of landmark relative to |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 48 | * argv0_path. For prefix, the landmark's path is derived from the VPATH |
| 49 | * preprocessor variable (taking into account that its value is almost, but |
| 50 | * not quite, what we need). For exec_prefix, the landmark is |
Antoine Pitrou | eba57b6 | 2010-08-14 12:33:18 +0000 | [diff] [blame] | 51 | * pybuilddir.txt. If the landmark is found, we're done. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 52 | * |
| 53 | * For the remaining steps, the prefix landmark will always be |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 54 | * lib/python$VERSION/os.py and the exec_prefix will always be |
Guido van Rossum | 266033e | 1997-10-20 23:20:32 +0000 | [diff] [blame] | 55 | * lib/python$VERSION/lib-dynload, where $VERSION is Python's version |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 56 | * number as supplied by the Makefile. Note that this means that no more |
| 57 | * build directory checking is performed; if the first step did not find |
| 58 | * the landmarks, the assumption is that python is running from an |
| 59 | * installed setup. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 60 | * |
| 61 | * Step 2. See if the $PYTHONHOME environment variable points to the |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 62 | * installed location of the Python libraries. If $PYTHONHOME is set, then |
| 63 | * it points to prefix and exec_prefix. $PYTHONHOME can be a single |
| 64 | * directory, which is used for both, or the prefix and exec_prefix |
| 65 | * directories separated by a colon. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 66 | * |
| 67 | * Step 3. Try to find prefix and exec_prefix relative to argv0_path, |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 68 | * backtracking up the path until it is exhausted. This is the most common |
| 69 | * step to succeed. Note that if prefix and exec_prefix are different, |
| 70 | * exec_prefix is more likely to be found; however if exec_prefix is a |
| 71 | * subdirectory of prefix, both will be found. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 72 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 73 | * Step 4. Search the directories pointed to by the preprocessor variables |
| 74 | * PREFIX and EXEC_PREFIX. These are supplied by the Makefile but can be |
| 75 | * passed in as options to the configure script. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 76 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 77 | * That's it! |
| 78 | * |
| 79 | * Well, almost. Once we have determined prefix and exec_prefix, the |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 80 | * preprocessor variable PYTHONPATH is used to construct a path. Each |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 81 | * relative path on PYTHONPATH is prefixed with prefix. Then the directory |
| 82 | * containing the shared library modules is appended. The environment |
| 83 | * variable $PYTHONPATH is inserted in front of it all. Finally, the |
| 84 | * prefix and exec_prefix globals are tweaked so they reflect the values |
| 85 | * expected by other code, by stripping the "lib/python$VERSION/..." stuff |
| 86 | * off. If either points to the build directory, the globals are reset to |
| 87 | * the corresponding preprocessor variables (so sys.prefix will reflect the |
| 88 | * installation location, even though sys.path points into the build |
| 89 | * directory). This seems to make more sense given that currently the only |
| 90 | * known use of sys.prefix and sys.exec_prefix is for the ILU installation |
| 91 | * process to find the installed Python tree. |
Antoine Pitrou | eba57b6 | 2010-08-14 12:33:18 +0000 | [diff] [blame] | 92 | * |
Kristján Valur Jónsson | 3b69db2 | 2010-09-27 05:32:54 +0000 | [diff] [blame] | 93 | * An embedding application can use Py_SetPath() to override all of |
| 94 | * these authomatic path computations. |
| 95 | * |
Antoine Pitrou | eba57b6 | 2010-08-14 12:33:18 +0000 | [diff] [blame] | 96 | * NOTE: Windows MSVC builds use PC/getpathp.c instead! |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 97 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 98 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 99 | #ifdef __cplusplus |
| 100 | extern "C" { |
| 101 | #endif |
| 102 | |
| 103 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 104 | #ifndef VERSION |
Guido van Rossum | d0e74ea | 2001-01-23 01:57:40 +0000 | [diff] [blame] | 105 | #define VERSION "2.1" |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 106 | #endif |
| 107 | |
| 108 | #ifndef VPATH |
| 109 | #define VPATH "." |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 110 | #endif |
| 111 | |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 112 | #ifndef PREFIX |
Christian Heimes | af01f66 | 2013-12-21 16:19:10 +0100 | [diff] [blame] | 113 | # define PREFIX "/usr/local" |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 114 | #endif |
| 115 | |
| 116 | #ifndef EXEC_PREFIX |
Guido van Rossum | 6e12d56 | 1996-07-30 20:36:12 +0000 | [diff] [blame] | 117 | #define EXEC_PREFIX PREFIX |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 118 | #endif |
| 119 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 120 | #ifndef PYTHONPATH |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 121 | #define PYTHONPATH PREFIX "/lib/python" VERSION ":" \ |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 122 | EXEC_PREFIX "/lib/python" VERSION "/lib-dynload" |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 123 | #endif |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 124 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 125 | #ifndef LANDMARK |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 126 | #define LANDMARK L"os.py" |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 127 | #endif |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 128 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 129 | static wchar_t prefix[MAXPATHLEN+1]; |
| 130 | static wchar_t exec_prefix[MAXPATHLEN+1]; |
| 131 | static wchar_t progpath[MAXPATHLEN+1]; |
| 132 | static wchar_t *module_search_path = NULL; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 133 | |
Victor Stinner | 91afbb6 | 2015-03-24 12:16:28 +0100 | [diff] [blame] | 134 | /* Get file status. Encode the path to the locale encoding. */ |
| 135 | |
| 136 | static int |
| 137 | _Py_wstat(const wchar_t* path, struct stat *buf) |
| 138 | { |
| 139 | int err; |
| 140 | char *fname; |
| 141 | fname = Py_EncodeLocale(path, NULL); |
| 142 | if (fname == NULL) { |
| 143 | errno = EINVAL; |
| 144 | return -1; |
| 145 | } |
| 146 | err = stat(fname, buf); |
| 147 | PyMem_Free(fname); |
| 148 | return err; |
| 149 | } |
| 150 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 151 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 152 | reduce(wchar_t *dir) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 153 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 154 | size_t i = wcslen(dir); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 155 | while (i > 0 && dir[i] != SEP) |
| 156 | --i; |
| 157 | dir[i] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 158 | } |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 159 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 160 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 161 | isfile(wchar_t *filename) /* Is file, not directory */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 162 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 163 | struct stat buf; |
Victor Stinner | 4e31443 | 2010-10-07 21:45:39 +0000 | [diff] [blame] | 164 | if (_Py_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 165 | return 0; |
| 166 | if (!S_ISREG(buf.st_mode)) |
| 167 | return 0; |
| 168 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | |
| 172 | static int |
Brett Cannon | f299abd | 2015-04-13 14:21:02 -0400 | [diff] [blame] | 173 | ismodule(wchar_t *filename) /* Is module -- check for .pyc too */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 174 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 175 | if (isfile(filename)) |
| 176 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 177 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 178 | /* Check for the compiled version of prefix. */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 179 | if (wcslen(filename) < MAXPATHLEN) { |
Brett Cannon | f299abd | 2015-04-13 14:21:02 -0400 | [diff] [blame] | 180 | wcscat(filename, L"c"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 181 | if (isfile(filename)) |
| 182 | return 1; |
| 183 | } |
| 184 | return 0; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | |
| 188 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 189 | isxfile(wchar_t *filename) /* Is executable file */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 190 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 191 | struct stat buf; |
Victor Stinner | 4e31443 | 2010-10-07 21:45:39 +0000 | [diff] [blame] | 192 | if (_Py_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 193 | return 0; |
| 194 | if (!S_ISREG(buf.st_mode)) |
| 195 | return 0; |
| 196 | if ((buf.st_mode & 0111) == 0) |
| 197 | return 0; |
| 198 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | |
| 202 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 203 | isdir(wchar_t *filename) /* Is directory */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 204 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 205 | struct stat buf; |
Victor Stinner | 4e31443 | 2010-10-07 21:45:39 +0000 | [diff] [blame] | 206 | if (_Py_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 207 | return 0; |
| 208 | if (!S_ISDIR(buf.st_mode)) |
| 209 | return 0; |
| 210 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | |
Tim Peters | ec8c5a9 | 2004-08-08 01:00:47 +0000 | [diff] [blame] | 214 | /* Add a path component, by appending stuff to buffer. |
| 215 | buffer must have at least MAXPATHLEN + 1 bytes allocated, and contain a |
| 216 | NUL-terminated string with no more than MAXPATHLEN characters (not counting |
| 217 | the trailing NUL). It's a fatal error if it contains a string longer than |
| 218 | that (callers must be careful!). If these requirements are met, it's |
| 219 | guaranteed that buffer will still be a NUL-terminated string with no more |
| 220 | than MAXPATHLEN characters at exit. If stuff is too long, only as much of |
| 221 | stuff as fits will be appended. |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 222 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 223 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 224 | joinpath(wchar_t *buffer, wchar_t *stuff) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 225 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 226 | size_t n, k; |
| 227 | if (stuff[0] == SEP) |
| 228 | n = 0; |
| 229 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 230 | n = wcslen(buffer); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 231 | if (n > 0 && buffer[n-1] != SEP && n < MAXPATHLEN) |
| 232 | buffer[n++] = SEP; |
| 233 | } |
Tim Peters | ec8c5a9 | 2004-08-08 01:00:47 +0000 | [diff] [blame] | 234 | if (n > MAXPATHLEN) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 235 | Py_FatalError("buffer overflow in getpath.c's joinpath()"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 236 | k = wcslen(stuff); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 237 | if (n + k > MAXPATHLEN) |
| 238 | k = MAXPATHLEN - n; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 239 | wcsncpy(buffer+n, stuff, k); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 240 | buffer[n+k] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 243 | /* copy_absolute requires that path be allocated at least |
| 244 | MAXPATHLEN + 1 bytes and that p be no more than MAXPATHLEN bytes. */ |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 245 | static void |
Victor Stinner | f4061da | 2010-10-14 12:37:19 +0000 | [diff] [blame] | 246 | copy_absolute(wchar_t *path, wchar_t *p, size_t pathlen) |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 247 | { |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 248 | if (p[0] == SEP) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 249 | wcscpy(path, p); |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 250 | else { |
Victor Stinner | f4061da | 2010-10-14 12:37:19 +0000 | [diff] [blame] | 251 | if (!_Py_wgetcwd(path, pathlen)) { |
Victor Stinner | 4f3abb0 | 2010-10-07 23:29:18 +0000 | [diff] [blame] | 252 | /* unable to get the current directory */ |
| 253 | wcscpy(path, p); |
| 254 | return; |
| 255 | } |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 256 | if (p[0] == '.' && p[1] == SEP) |
| 257 | p += 2; |
| 258 | joinpath(path, p); |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 259 | } |
| 260 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 261 | |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 262 | /* absolutize() requires that path be allocated at least MAXPATHLEN+1 bytes. */ |
| 263 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 264 | absolutize(wchar_t *path) |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 265 | { |
Victor Stinner | f4061da | 2010-10-14 12:37:19 +0000 | [diff] [blame] | 266 | wchar_t buffer[MAXPATHLEN+1]; |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 267 | |
| 268 | if (path[0] == SEP) |
| 269 | return; |
Victor Stinner | f4061da | 2010-10-14 12:37:19 +0000 | [diff] [blame] | 270 | copy_absolute(buffer, path, MAXPATHLEN+1); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 271 | wcscpy(path, buffer); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 272 | } |
| 273 | |
Vinay Sajip | 7ded1f0 | 2012-05-26 03:45:29 +0100 | [diff] [blame] | 274 | /* search for a prefix value in an environment file. If found, copy it |
| 275 | to the provided buffer, which is expected to be no more than MAXPATHLEN |
| 276 | bytes long. |
| 277 | */ |
| 278 | |
| 279 | static int |
| 280 | find_env_config_value(FILE * env_file, const wchar_t * key, wchar_t * value) |
| 281 | { |
| 282 | int result = 0; /* meaning not found */ |
| 283 | char buffer[MAXPATHLEN*2+1]; /* allow extra for key, '=', etc. */ |
| 284 | |
| 285 | fseek(env_file, 0, SEEK_SET); |
| 286 | while (!feof(env_file)) { |
| 287 | char * p = fgets(buffer, MAXPATHLEN*2, env_file); |
| 288 | wchar_t tmpbuffer[MAXPATHLEN*2+1]; |
| 289 | PyObject * decoded; |
| 290 | int n; |
| 291 | |
| 292 | if (p == NULL) |
| 293 | break; |
| 294 | n = strlen(p); |
| 295 | if (p[n - 1] != '\n') { |
| 296 | /* line has overflowed - bail */ |
| 297 | break; |
| 298 | } |
| 299 | if (p[0] == '#') /* Comment - skip */ |
| 300 | continue; |
| 301 | decoded = PyUnicode_DecodeUTF8(buffer, n, "surrogateescape"); |
| 302 | if (decoded != NULL) { |
| 303 | Py_ssize_t k; |
| 304 | wchar_t * state; |
| 305 | k = PyUnicode_AsWideChar(decoded, |
| 306 | tmpbuffer, MAXPATHLEN * 2); |
| 307 | Py_DECREF(decoded); |
| 308 | if (k >= 0) { |
| 309 | wchar_t * tok = wcstok(tmpbuffer, L" \t\r\n", &state); |
| 310 | if ((tok != NULL) && !wcscmp(tok, key)) { |
| 311 | tok = wcstok(NULL, L" \t", &state); |
| 312 | if ((tok != NULL) && !wcscmp(tok, L"=")) { |
| 313 | tok = wcstok(NULL, L"\r\n", &state); |
| 314 | if (tok != NULL) { |
| 315 | wcsncpy(value, tok, MAXPATHLEN); |
| 316 | result = 1; |
| 317 | break; |
| 318 | } |
| 319 | } |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | } |
| 324 | return result; |
| 325 | } |
| 326 | |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 327 | /* search_for_prefix requires that argv0_path be no more than MAXPATHLEN |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 328 | bytes long. |
| 329 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 330 | static int |
Victor Stinner | ce4179d | 2013-11-16 00:45:54 +0100 | [diff] [blame] | 331 | search_for_prefix(wchar_t *argv0_path, wchar_t *home, wchar_t *_prefix, |
| 332 | wchar_t *lib_python) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 333 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 334 | size_t n; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 335 | wchar_t *vpath; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 336 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 337 | /* If PYTHONHOME is set, we believe it unconditionally */ |
| 338 | if (home) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 339 | wchar_t *delim; |
| 340 | wcsncpy(prefix, home, MAXPATHLEN); |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 341 | prefix[MAXPATHLEN] = L'\0'; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 342 | delim = wcschr(prefix, DELIM); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 343 | if (delim) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 344 | *delim = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 345 | joinpath(prefix, lib_python); |
| 346 | joinpath(prefix, LANDMARK); |
| 347 | return 1; |
| 348 | } |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 349 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 350 | /* Check to see if argv[0] is in the build directory */ |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 351 | wcsncpy(prefix, argv0_path, MAXPATHLEN); |
| 352 | prefix[MAXPATHLEN] = L'\0'; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 353 | joinpath(prefix, L"Modules/Setup"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 354 | if (isfile(prefix)) { |
Neil Schemenauer | 6cf0702 | 2001-01-24 17:13:11 +0000 | [diff] [blame] | 355 | /* Check VPATH to see if argv0_path is in the build directory. */ |
Victor Stinner | f6a271a | 2014-08-01 12:28:48 +0200 | [diff] [blame] | 356 | vpath = Py_DecodeLocale(VPATH, NULL); |
Victor Stinner | 2158231 | 2010-10-23 00:13:28 +0000 | [diff] [blame] | 357 | if (vpath != NULL) { |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 358 | wcsncpy(prefix, argv0_path, MAXPATHLEN); |
| 359 | prefix[MAXPATHLEN] = L'\0'; |
Victor Stinner | 2158231 | 2010-10-23 00:13:28 +0000 | [diff] [blame] | 360 | joinpath(prefix, vpath); |
Victor Stinner | 1a7425f | 2013-07-07 16:25:15 +0200 | [diff] [blame] | 361 | PyMem_RawFree(vpath); |
Victor Stinner | 2158231 | 2010-10-23 00:13:28 +0000 | [diff] [blame] | 362 | joinpath(prefix, L"Lib"); |
| 363 | joinpath(prefix, LANDMARK); |
| 364 | if (ismodule(prefix)) |
| 365 | return -1; |
| 366 | } |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 367 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 368 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 369 | /* Search from argv0_path, until root is found */ |
Victor Stinner | f4061da | 2010-10-14 12:37:19 +0000 | [diff] [blame] | 370 | copy_absolute(prefix, argv0_path, MAXPATHLEN+1); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 371 | do { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 372 | n = wcslen(prefix); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 373 | joinpath(prefix, lib_python); |
| 374 | joinpath(prefix, LANDMARK); |
| 375 | if (ismodule(prefix)) |
| 376 | return 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 377 | prefix[n] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 378 | reduce(prefix); |
| 379 | } while (prefix[0]); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 380 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 381 | /* Look at configure's PREFIX */ |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 382 | wcsncpy(prefix, _prefix, MAXPATHLEN); |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 383 | prefix[MAXPATHLEN] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 384 | joinpath(prefix, lib_python); |
| 385 | joinpath(prefix, LANDMARK); |
| 386 | if (ismodule(prefix)) |
| 387 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 388 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 389 | /* Fail */ |
| 390 | return 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 394 | /* search_for_exec_prefix requires that argv0_path be no more than |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 395 | MAXPATHLEN bytes long. |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 396 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 397 | static int |
Victor Stinner | ce4179d | 2013-11-16 00:45:54 +0100 | [diff] [blame] | 398 | search_for_exec_prefix(wchar_t *argv0_path, wchar_t *home, |
| 399 | wchar_t *_exec_prefix, wchar_t *lib_python) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 400 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 401 | size_t n; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 402 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 403 | /* If PYTHONHOME is set, we believe it unconditionally */ |
| 404 | if (home) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 405 | wchar_t *delim; |
| 406 | delim = wcschr(home, DELIM); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 407 | if (delim) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 408 | wcsncpy(exec_prefix, delim+1, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 409 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 410 | wcsncpy(exec_prefix, home, MAXPATHLEN); |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 411 | exec_prefix[MAXPATHLEN] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 412 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 413 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 414 | return 1; |
| 415 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 416 | |
Antoine Pitrou | e9b428f | 2010-08-13 22:25:01 +0000 | [diff] [blame] | 417 | /* Check to see if argv[0] is in the build directory. "pybuilddir.txt" |
| 418 | is written by setup.py and contains the relative path to the location |
| 419 | of shared library modules. */ |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 420 | wcsncpy(exec_prefix, argv0_path, MAXPATHLEN); |
| 421 | exec_prefix[MAXPATHLEN] = L'\0'; |
Antoine Pitrou | e9b428f | 2010-08-13 22:25:01 +0000 | [diff] [blame] | 422 | joinpath(exec_prefix, L"pybuilddir.txt"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 423 | if (isfile(exec_prefix)) { |
Antoine Pitrou | e9b428f | 2010-08-13 22:25:01 +0000 | [diff] [blame] | 424 | FILE *f = _Py_wfopen(exec_prefix, L"rb"); |
| 425 | if (f == NULL) |
| 426 | errno = 0; |
| 427 | else { |
| 428 | char buf[MAXPATHLEN+1]; |
| 429 | PyObject *decoded; |
| 430 | wchar_t rel_builddir_path[MAXPATHLEN+1]; |
Antoine Pitrou | e9b428f | 2010-08-13 22:25:01 +0000 | [diff] [blame] | 431 | n = fread(buf, 1, MAXPATHLEN, f); |
| 432 | buf[n] = '\0'; |
| 433 | fclose(f); |
| 434 | decoded = PyUnicode_DecodeUTF8(buf, n, "surrogateescape"); |
| 435 | if (decoded != NULL) { |
Victor Stinner | 47f637c | 2010-11-10 14:12:20 +0000 | [diff] [blame] | 436 | Py_ssize_t k; |
Martin v. Löwis | 4d0d471 | 2010-12-03 20:14:31 +0000 | [diff] [blame] | 437 | k = PyUnicode_AsWideChar(decoded, |
Victor Stinner | e406ef4 | 2010-08-14 00:07:14 +0000 | [diff] [blame] | 438 | rel_builddir_path, MAXPATHLEN); |
Antoine Pitrou | e9b428f | 2010-08-13 22:25:01 +0000 | [diff] [blame] | 439 | Py_DECREF(decoded); |
Victor Stinner | 47f637c | 2010-11-10 14:12:20 +0000 | [diff] [blame] | 440 | if (k >= 0) { |
| 441 | rel_builddir_path[k] = L'\0'; |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 442 | wcsncpy(exec_prefix, argv0_path, MAXPATHLEN); |
| 443 | exec_prefix[MAXPATHLEN] = L'\0'; |
Antoine Pitrou | e9b428f | 2010-08-13 22:25:01 +0000 | [diff] [blame] | 444 | joinpath(exec_prefix, rel_builddir_path); |
| 445 | return -1; |
| 446 | } |
| 447 | } |
| 448 | } |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 449 | } |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 450 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 451 | /* Search from argv0_path, until root is found */ |
Victor Stinner | f4061da | 2010-10-14 12:37:19 +0000 | [diff] [blame] | 452 | copy_absolute(exec_prefix, argv0_path, MAXPATHLEN+1); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 453 | do { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 454 | n = wcslen(exec_prefix); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 455 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 456 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 457 | if (isdir(exec_prefix)) |
| 458 | return 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 459 | exec_prefix[n] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 460 | reduce(exec_prefix); |
| 461 | } while (exec_prefix[0]); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 462 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 463 | /* Look at configure's EXEC_PREFIX */ |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 464 | wcsncpy(exec_prefix, _exec_prefix, MAXPATHLEN); |
Christian Heimes | 60a6067 | 2013-07-22 12:53:32 +0200 | [diff] [blame] | 465 | exec_prefix[MAXPATHLEN] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 466 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 467 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 468 | if (isdir(exec_prefix)) |
| 469 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 470 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 471 | /* Fail */ |
| 472 | return 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 473 | } |
| 474 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 475 | static void |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 476 | calculate_path(void) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 477 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 478 | extern wchar_t *Py_GetProgramName(void); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 479 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 480 | static wchar_t delimiter[2] = {DELIM, '\0'}; |
| 481 | static wchar_t separator[2] = {SEP, '\0'}; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 482 | char *_rtpypath = Py_GETENV("PYTHONPATH"); /* XXX use wide version on Windows */ |
Victor Stinner | 99563b1 | 2011-06-20 14:45:54 +0200 | [diff] [blame] | 483 | wchar_t *rtpypath = NULL; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 484 | wchar_t *home = Py_GetPythonHome(); |
| 485 | char *_path = getenv("PATH"); |
Victor Stinner | 61aad57 | 2010-10-16 23:38:07 +0000 | [diff] [blame] | 486 | wchar_t *path_buffer = NULL; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 487 | wchar_t *path = NULL; |
| 488 | wchar_t *prog = Py_GetProgramName(); |
| 489 | wchar_t argv0_path[MAXPATHLEN+1]; |
| 490 | wchar_t zip_path[MAXPATHLEN+1]; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 491 | int pfound, efound; /* 1 if found; -1 if found build directory */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 492 | wchar_t *buf; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 493 | size_t bufsz; |
| 494 | size_t prefixsz; |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 495 | wchar_t *defpath; |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 496 | #ifdef WITH_NEXT_FRAMEWORK |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 497 | NSModule pythonModule; |
Vinay Sajip | 90db661 | 2012-07-17 17:33:46 +0100 | [diff] [blame] | 498 | const char* modPath; |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 499 | #endif |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 500 | #ifdef __APPLE__ |
Skip Montanaro | 2b47445 | 2006-01-05 10:49:13 +0000 | [diff] [blame] | 501 | #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4 |
Brett Cannon | bd9c3f7 | 2005-09-16 02:43:35 +0000 | [diff] [blame] | 502 | uint32_t nsexeclength = MAXPATHLEN; |
Skip Montanaro | 2b47445 | 2006-01-05 10:49:13 +0000 | [diff] [blame] | 503 | #else |
| 504 | unsigned long nsexeclength = MAXPATHLEN; |
| 505 | #endif |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 506 | char execpath[MAXPATHLEN+1]; |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 507 | #endif |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 508 | wchar_t *_pythonpath, *_prefix, *_exec_prefix; |
Victor Stinner | ce4179d | 2013-11-16 00:45:54 +0100 | [diff] [blame] | 509 | wchar_t *lib_python; |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 510 | |
Victor Stinner | f6a271a | 2014-08-01 12:28:48 +0200 | [diff] [blame] | 511 | _pythonpath = Py_DecodeLocale(PYTHONPATH, NULL); |
| 512 | _prefix = Py_DecodeLocale(PREFIX, NULL); |
| 513 | _exec_prefix = Py_DecodeLocale(EXEC_PREFIX, NULL); |
| 514 | lib_python = Py_DecodeLocale("lib/python" VERSION, NULL); |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 515 | |
Victor Stinner | ce4179d | 2013-11-16 00:45:54 +0100 | [diff] [blame] | 516 | if (!_pythonpath || !_prefix || !_exec_prefix || !lib_python) { |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 517 | Py_FatalError( |
| 518 | "Unable to decode path variables in getpath.c: " |
| 519 | "memory error"); |
| 520 | } |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 521 | |
Victor Stinner | 61aad57 | 2010-10-16 23:38:07 +0000 | [diff] [blame] | 522 | if (_path) { |
Victor Stinner | f6a271a | 2014-08-01 12:28:48 +0200 | [diff] [blame] | 523 | path_buffer = Py_DecodeLocale(_path, NULL); |
Victor Stinner | 61aad57 | 2010-10-16 23:38:07 +0000 | [diff] [blame] | 524 | path = path_buffer; |
| 525 | } |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 526 | |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 527 | /* If there is no slash in the argv0 path, then we have to |
| 528 | * assume python is on the user's $PATH, since there's no |
| 529 | * other way to find a directory to start the search from. If |
| 530 | * $PATH isn't exported, you lose. |
| 531 | */ |
| 532 | if (wcschr(prog, SEP)) |
| 533 | wcsncpy(progpath, prog, MAXPATHLEN); |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 534 | #ifdef __APPLE__ |
| 535 | /* On Mac OS X, if a script uses an interpreter of the form |
| 536 | * "#!/opt/python2.3/bin/python", the kernel only passes "python" |
| 537 | * as argv[0], which falls through to the $PATH search below. |
| 538 | * If /opt/python2.3/bin isn't in your path, or is near the end, |
| 539 | * this algorithm may incorrectly find /usr/bin/python. To work |
| 540 | * around this, we can use _NSGetExecutablePath to get a better |
| 541 | * hint of what the intended interpreter was, although this |
| 542 | * will fail if a relative path was used. but in that case, |
| 543 | * absolutize() should help us out below |
| 544 | */ |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 545 | else if(0 == _NSGetExecutablePath(execpath, &nsexeclength) && execpath[0] == SEP) { |
| 546 | size_t r = mbstowcs(progpath, execpath, MAXPATHLEN+1); |
| 547 | if (r == (size_t)-1 || r > MAXPATHLEN) { |
| 548 | /* Could not convert execpath, or it's too long. */ |
| 549 | progpath[0] = '\0'; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 550 | } |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 551 | } |
Brett Cannon | 6cc4814 | 2004-06-24 00:48:44 +0000 | [diff] [blame] | 552 | #endif /* __APPLE__ */ |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 553 | else if (path) { |
| 554 | while (1) { |
| 555 | wchar_t *delim = wcschr(path, DELIM); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 556 | |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 557 | if (delim) { |
| 558 | size_t len = delim - path; |
| 559 | if (len > MAXPATHLEN) |
| 560 | len = MAXPATHLEN; |
| 561 | wcsncpy(progpath, path, len); |
| 562 | *(progpath + len) = '\0'; |
| 563 | } |
| 564 | else |
| 565 | wcsncpy(progpath, path, MAXPATHLEN); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 566 | |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 567 | joinpath(progpath, prog); |
| 568 | if (isxfile(progpath)) |
| 569 | break; |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 570 | |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 571 | if (!delim) { |
| 572 | progpath[0] = L'\0'; |
| 573 | break; |
| 574 | } |
| 575 | path = delim + 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 576 | } |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 577 | } |
| 578 | else |
| 579 | progpath[0] = '\0'; |
Victor Stinner | 1a7425f | 2013-07-07 16:25:15 +0200 | [diff] [blame] | 580 | PyMem_RawFree(path_buffer); |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 581 | if (progpath[0] != SEP && progpath[0] != '\0') |
| 582 | absolutize(progpath); |
| 583 | wcsncpy(argv0_path, progpath, MAXPATHLEN); |
| 584 | argv0_path[MAXPATHLEN] = '\0'; |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 585 | |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 586 | #ifdef WITH_NEXT_FRAMEWORK |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 587 | /* On Mac OS X we have a special case if we're running from a framework. |
| 588 | ** This is because the python home should be set relative to the library, |
| 589 | ** which is in the framework, not relative to the executable, which may |
| 590 | ** be outside of the framework. Except when we're in the build directory... |
| 591 | */ |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 592 | pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize")); |
| 593 | /* Use dylib functions to find out where the framework was loaded from */ |
Vinay Sajip | 90db661 | 2012-07-17 17:33:46 +0100 | [diff] [blame] | 594 | modPath = NSLibraryNameForModule(pythonModule); |
| 595 | if (modPath != NULL) { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 596 | /* We're in a framework. */ |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 597 | /* See if we might be in the build directory. The framework in the |
| 598 | ** build directory is incomplete, it only has the .dylib and a few |
| 599 | ** needed symlinks, it doesn't have the Lib directories and such. |
| 600 | ** If we're running with the framework from the build directory we must |
| 601 | ** be running the interpreter in the build directory, so we use the |
| 602 | ** build-directory-specific logic to find Lib and such. |
| 603 | */ |
Victor Stinner | f6a271a | 2014-08-01 12:28:48 +0200 | [diff] [blame] | 604 | wchar_t* wbuf = Py_DecodeLocale(modPath, NULL); |
Vinay Sajip | 90db661 | 2012-07-17 17:33:46 +0100 | [diff] [blame] | 605 | if (wbuf == NULL) { |
| 606 | Py_FatalError("Cannot decode framework location"); |
| 607 | } |
| 608 | |
| 609 | wcsncpy(argv0_path, wbuf, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 610 | reduce(argv0_path); |
| 611 | joinpath(argv0_path, lib_python); |
| 612 | joinpath(argv0_path, LANDMARK); |
| 613 | if (!ismodule(argv0_path)) { |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 614 | /* We are in the build directory so use the name of the |
| 615 | executable - we know that the absolute path is passed */ |
| 616 | wcsncpy(argv0_path, progpath, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 617 | } |
| 618 | else { |
Antoine Pitrou | 99773ac | 2010-08-14 12:34:41 +0000 | [diff] [blame] | 619 | /* Use the location of the library as the progpath */ |
Vinay Sajip | 90db661 | 2012-07-17 17:33:46 +0100 | [diff] [blame] | 620 | wcsncpy(argv0_path, wbuf, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 621 | } |
Victor Stinner | 1a7425f | 2013-07-07 16:25:15 +0200 | [diff] [blame] | 622 | PyMem_RawFree(wbuf); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 623 | } |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 624 | #endif |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 625 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 626 | #if HAVE_READLINK |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 627 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 628 | wchar_t tmpbuffer[MAXPATHLEN+1]; |
| 629 | int linklen = _Py_wreadlink(progpath, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 630 | while (linklen != -1) { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 631 | if (tmpbuffer[0] == SEP) |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 632 | /* tmpbuffer should never be longer than MAXPATHLEN, |
| 633 | but extra check does not hurt */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 634 | wcsncpy(argv0_path, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 635 | else { |
| 636 | /* Interpret relative to progpath */ |
| 637 | reduce(argv0_path); |
| 638 | joinpath(argv0_path, tmpbuffer); |
| 639 | } |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 640 | linklen = _Py_wreadlink(argv0_path, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 641 | } |
| 642 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 643 | #endif /* HAVE_READLINK */ |
| 644 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 645 | reduce(argv0_path); |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 646 | /* At this point, argv0_path is guaranteed to be less than |
| 647 | MAXPATHLEN bytes long. |
| 648 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 649 | |
Vinay Sajip | 7ded1f0 | 2012-05-26 03:45:29 +0100 | [diff] [blame] | 650 | /* Search for an environment configuration file, first in the |
| 651 | executable's directory and then in the parent directory. |
| 652 | If found, open it for use when searching for prefixes. |
| 653 | */ |
| 654 | |
| 655 | { |
| 656 | wchar_t tmpbuffer[MAXPATHLEN+1]; |
| 657 | wchar_t *env_cfg = L"pyvenv.cfg"; |
| 658 | FILE * env_file = NULL; |
| 659 | |
| 660 | wcscpy(tmpbuffer, argv0_path); |
Vinay Sajip | 90db661 | 2012-07-17 17:33:46 +0100 | [diff] [blame] | 661 | |
Vinay Sajip | 7ded1f0 | 2012-05-26 03:45:29 +0100 | [diff] [blame] | 662 | joinpath(tmpbuffer, env_cfg); |
| 663 | env_file = _Py_wfopen(tmpbuffer, L"r"); |
| 664 | if (env_file == NULL) { |
| 665 | errno = 0; |
| 666 | reduce(tmpbuffer); |
| 667 | reduce(tmpbuffer); |
| 668 | joinpath(tmpbuffer, env_cfg); |
| 669 | env_file = _Py_wfopen(tmpbuffer, L"r"); |
| 670 | if (env_file == NULL) { |
| 671 | errno = 0; |
| 672 | } |
| 673 | } |
| 674 | if (env_file != NULL) { |
| 675 | /* Look for a 'home' variable and set argv0_path to it, if found */ |
| 676 | if (find_env_config_value(env_file, L"home", tmpbuffer)) { |
| 677 | wcscpy(argv0_path, tmpbuffer); |
| 678 | } |
| 679 | fclose(env_file); |
| 680 | env_file = NULL; |
| 681 | } |
| 682 | } |
| 683 | |
Victor Stinner | ce4179d | 2013-11-16 00:45:54 +0100 | [diff] [blame] | 684 | pfound = search_for_prefix(argv0_path, home, _prefix, lib_python); |
| 685 | if (!pfound) { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 686 | if (!Py_FrozenFlag) |
| 687 | fprintf(stderr, |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 688 | "Could not find platform independent libraries <prefix>\n"); |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 689 | wcsncpy(prefix, _prefix, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 690 | joinpath(prefix, lib_python); |
| 691 | } |
| 692 | else |
| 693 | reduce(prefix); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 694 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 695 | wcsncpy(zip_path, prefix, MAXPATHLEN); |
| 696 | zip_path[MAXPATHLEN] = L'\0'; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 697 | if (pfound > 0) { /* Use the reduced prefix returned by Py_GetPrefix() */ |
| 698 | reduce(zip_path); |
| 699 | reduce(zip_path); |
| 700 | } |
| 701 | else |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 702 | wcsncpy(zip_path, _prefix, MAXPATHLEN); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 703 | joinpath(zip_path, L"lib/python00.zip"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 704 | bufsz = wcslen(zip_path); /* Replace "00" with version */ |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 705 | zip_path[bufsz - 6] = VERSION[0]; |
| 706 | zip_path[bufsz - 5] = VERSION[2]; |
| 707 | |
Victor Stinner | ce4179d | 2013-11-16 00:45:54 +0100 | [diff] [blame] | 708 | efound = search_for_exec_prefix(argv0_path, home, |
| 709 | _exec_prefix, lib_python); |
| 710 | if (!efound) { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 711 | if (!Py_FrozenFlag) |
| 712 | fprintf(stderr, |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 713 | "Could not find platform dependent libraries <exec_prefix>\n"); |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 714 | wcsncpy(exec_prefix, _exec_prefix, MAXPATHLEN); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 715 | joinpath(exec_prefix, L"lib/lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 716 | } |
| 717 | /* If we found EXEC_PREFIX do *not* reduce it! (Yet.) */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 718 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 719 | if ((!pfound || !efound) && !Py_FrozenFlag) |
| 720 | fprintf(stderr, |
| 721 | "Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n"); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 722 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 723 | /* Calculate size of return buffer. |
| 724 | */ |
| 725 | bufsz = 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 726 | |
Andrew Svetlov | 69032c8 | 2012-11-03 13:52:58 +0200 | [diff] [blame] | 727 | if (_rtpypath && _rtpypath[0] != '\0') { |
Victor Stinner | 99563b1 | 2011-06-20 14:45:54 +0200 | [diff] [blame] | 728 | size_t rtpypath_len; |
Victor Stinner | f6a271a | 2014-08-01 12:28:48 +0200 | [diff] [blame] | 729 | rtpypath = Py_DecodeLocale(_rtpypath, &rtpypath_len); |
Victor Stinner | 99563b1 | 2011-06-20 14:45:54 +0200 | [diff] [blame] | 730 | if (rtpypath != NULL) |
| 731 | bufsz += rtpypath_len + 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 732 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 733 | |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 734 | defpath = _pythonpath; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 735 | prefixsz = wcslen(prefix) + 1; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 736 | while (1) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 737 | wchar_t *delim = wcschr(defpath, DELIM); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 738 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 739 | if (defpath[0] != SEP) |
| 740 | /* Paths are relative to prefix */ |
| 741 | bufsz += prefixsz; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 742 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 743 | if (delim) |
| 744 | bufsz += delim - defpath + 1; |
| 745 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 746 | bufsz += wcslen(defpath) + 1; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 747 | break; |
| 748 | } |
| 749 | defpath = delim + 1; |
| 750 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 751 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 752 | bufsz += wcslen(zip_path) + 1; |
| 753 | bufsz += wcslen(exec_prefix) + 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 754 | |
Serhiy Storchaka | 1a1ff29 | 2015-02-16 13:28:22 +0200 | [diff] [blame] | 755 | buf = PyMem_New(wchar_t, bufsz); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 756 | if (buf == NULL) { |
Victor Stinner | 72967a4 | 2013-11-16 01:22:04 +0100 | [diff] [blame] | 757 | Py_FatalError( |
| 758 | "Not enough memory for dynamic PYTHONPATH"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 759 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 760 | |
Victor Stinner | 72967a4 | 2013-11-16 01:22:04 +0100 | [diff] [blame] | 761 | /* Run-time value of $PYTHONPATH goes first */ |
| 762 | if (rtpypath) { |
| 763 | wcscpy(buf, rtpypath); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 764 | wcscat(buf, delimiter); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 765 | } |
Victor Stinner | 72967a4 | 2013-11-16 01:22:04 +0100 | [diff] [blame] | 766 | else |
| 767 | buf[0] = '\0'; |
| 768 | |
| 769 | /* Next is the default zip path */ |
| 770 | wcscat(buf, zip_path); |
| 771 | wcscat(buf, delimiter); |
| 772 | |
| 773 | /* Next goes merge of compile-time $PYTHONPATH with |
| 774 | * dynamically located prefix. |
| 775 | */ |
| 776 | defpath = _pythonpath; |
| 777 | while (1) { |
| 778 | wchar_t *delim = wcschr(defpath, DELIM); |
| 779 | |
| 780 | if (defpath[0] != SEP) { |
| 781 | wcscat(buf, prefix); |
| 782 | wcscat(buf, separator); |
| 783 | } |
| 784 | |
| 785 | if (delim) { |
| 786 | size_t len = delim - defpath + 1; |
| 787 | size_t end = wcslen(buf) + len; |
| 788 | wcsncat(buf, defpath, len); |
| 789 | *(buf + end) = '\0'; |
| 790 | } |
| 791 | else { |
| 792 | wcscat(buf, defpath); |
| 793 | break; |
| 794 | } |
| 795 | defpath = delim + 1; |
| 796 | } |
| 797 | wcscat(buf, delimiter); |
| 798 | |
| 799 | /* Finally, on goes the directory for dynamic-load modules */ |
| 800 | wcscat(buf, exec_prefix); |
| 801 | |
| 802 | /* And publish the results */ |
| 803 | module_search_path = buf; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 804 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 805 | /* Reduce prefix and exec_prefix to their essence, |
| 806 | * e.g. /usr/local/lib/python1.5 is reduced to /usr/local. |
| 807 | * If we're loading relative to the build directory, |
| 808 | * return the compiled-in defaults instead. |
| 809 | */ |
| 810 | if (pfound > 0) { |
| 811 | reduce(prefix); |
| 812 | reduce(prefix); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 813 | /* The prefix is the root directory, but reduce() chopped |
| 814 | * off the "/". */ |
| 815 | if (!prefix[0]) |
| 816 | wcscpy(prefix, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 817 | } |
| 818 | else |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 819 | wcsncpy(prefix, _prefix, MAXPATHLEN); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 820 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 821 | if (efound > 0) { |
| 822 | reduce(exec_prefix); |
| 823 | reduce(exec_prefix); |
| 824 | reduce(exec_prefix); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 825 | if (!exec_prefix[0]) |
| 826 | wcscpy(exec_prefix, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 827 | } |
| 828 | else |
Victor Stinner | ae4836d | 2010-11-08 23:49:47 +0000 | [diff] [blame] | 829 | wcsncpy(exec_prefix, _exec_prefix, MAXPATHLEN); |
| 830 | |
Victor Stinner | 1a7425f | 2013-07-07 16:25:15 +0200 | [diff] [blame] | 831 | PyMem_RawFree(_pythonpath); |
| 832 | PyMem_RawFree(_prefix); |
| 833 | PyMem_RawFree(_exec_prefix); |
Victor Stinner | ce4179d | 2013-11-16 00:45:54 +0100 | [diff] [blame] | 834 | PyMem_RawFree(lib_python); |
Victor Stinner | 1a7425f | 2013-07-07 16:25:15 +0200 | [diff] [blame] | 835 | PyMem_RawFree(rtpypath); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 836 | } |
| 837 | |
| 838 | |
| 839 | /* External interface */ |
Kristján Valur Jónsson | 3b69db2 | 2010-09-27 05:32:54 +0000 | [diff] [blame] | 840 | void |
| 841 | Py_SetPath(const wchar_t *path) |
| 842 | { |
| 843 | if (module_search_path != NULL) { |
Victor Stinner | 72967a4 | 2013-11-16 01:22:04 +0100 | [diff] [blame] | 844 | PyMem_RawFree(module_search_path); |
Kristján Valur Jónsson | 3b69db2 | 2010-09-27 05:32:54 +0000 | [diff] [blame] | 845 | module_search_path = NULL; |
| 846 | } |
| 847 | if (path != NULL) { |
| 848 | extern wchar_t *Py_GetProgramName(void); |
| 849 | wchar_t *prog = Py_GetProgramName(); |
| 850 | wcsncpy(progpath, prog, MAXPATHLEN); |
| 851 | exec_prefix[0] = prefix[0] = L'\0'; |
Victor Stinner | 1a7425f | 2013-07-07 16:25:15 +0200 | [diff] [blame] | 852 | module_search_path = PyMem_RawMalloc((wcslen(path) + 1) * sizeof(wchar_t)); |
Kristján Valur Jónsson | 3b69db2 | 2010-09-27 05:32:54 +0000 | [diff] [blame] | 853 | if (module_search_path != NULL) |
| 854 | wcscpy(module_search_path, path); |
| 855 | } |
| 856 | } |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 857 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 858 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 859 | Py_GetPath(void) |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 860 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 861 | if (!module_search_path) |
| 862 | calculate_path(); |
| 863 | return module_search_path; |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 864 | } |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 865 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 866 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 867 | Py_GetPrefix(void) |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 868 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 869 | if (!module_search_path) |
| 870 | calculate_path(); |
| 871 | return prefix; |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 872 | } |
| 873 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 874 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 875 | Py_GetExecPrefix(void) |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 876 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 877 | if (!module_search_path) |
| 878 | calculate_path(); |
| 879 | return exec_prefix; |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 880 | } |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 881 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 882 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 883 | Py_GetProgramFullPath(void) |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 884 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 885 | if (!module_search_path) |
| 886 | calculate_path(); |
| 887 | return progpath; |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 888 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 889 | |
| 890 | |
| 891 | #ifdef __cplusplus |
| 892 | } |
| 893 | #endif |