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 | /* File object implementation */ |
| 3 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 5 | #include "structmember.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 6 | |
Guido van Rossum | ff7e83d | 1999-08-27 20:39:37 +0000 | [diff] [blame] | 7 | #ifndef DONT_HAVE_SYS_TYPES_H |
Guido van Rossum | 4149843 | 1999-01-07 22:09:51 +0000 | [diff] [blame] | 8 | #include <sys/types.h> |
Guido van Rossum | ff7e83d | 1999-08-27 20:39:37 +0000 | [diff] [blame] | 9 | #endif /* DONT_HAVE_SYS_TYPES_H */ |
Guido van Rossum | 4149843 | 1999-01-07 22:09:51 +0000 | [diff] [blame] | 10 | |
Guido van Rossum | eceebb8 | 2000-06-28 20:57:07 +0000 | [diff] [blame] | 11 | /* We expect that fstat exists on most systems. |
| 12 | It's confirmed on Unix, Mac and Windows. |
| 13 | If you don't have it, add #define DONT_HAVE_FSTAT to your config.h. */ |
| 14 | #ifndef DONT_HAVE_FSTAT |
| 15 | #define HAVE_FSTAT |
| 16 | |
| 17 | #ifndef DONT_HAVE_SYS_TYPES_H |
| 18 | #include <sys/types.h> |
| 19 | #endif |
| 20 | |
| 21 | #ifndef DONT_HAVE_SYS_STAT_H |
| 22 | #include <sys/stat.h> |
| 23 | #else |
| 24 | #ifdef HAVE_STAT_H |
| 25 | #include <stat.h> |
| 26 | #endif |
| 27 | #endif |
| 28 | |
| 29 | #endif /* DONT_HAVE_FSTAT */ |
| 30 | |
Guido van Rossum | 685a38e | 1996-12-05 21:54:17 +0000 | [diff] [blame] | 31 | #ifdef HAVE_UNISTD_H |
| 32 | #include <unistd.h> |
| 33 | #endif |
| 34 | |
Guido van Rossum | b819914 | 1997-05-06 15:23:24 +0000 | [diff] [blame] | 35 | #ifdef MS_WIN32 |
Guido van Rossum | b819914 | 1997-05-06 15:23:24 +0000 | [diff] [blame] | 36 | #define fileno _fileno |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 37 | /* can (almost fully) duplicate with _chsize, see file_truncate */ |
Guido van Rossum | b819914 | 1997-05-06 15:23:24 +0000 | [diff] [blame] | 38 | #define HAVE_FTRUNCATE |
| 39 | #endif |
| 40 | |
Guido van Rossum | f2044e1 | 1998-04-28 16:05:59 +0000 | [diff] [blame] | 41 | #ifdef macintosh |
| 42 | #ifdef USE_GUSI |
| 43 | #define HAVE_FTRUNCATE |
| 44 | #endif |
| 45 | #endif |
| 46 | |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 47 | #ifdef __MWERKS__ |
| 48 | /* Mwerks fopen() doesn't always set errno */ |
| 49 | #define NO_FOPEN_ERRNO |
| 50 | #endif |
Guido van Rossum | 295d171 | 1995-02-19 15:55:19 +0000 | [diff] [blame] | 51 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 52 | #define BUF(v) PyString_AS_STRING((PyStringObject *)v) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 53 | |
Guido van Rossum | ff7e83d | 1999-08-27 20:39:37 +0000 | [diff] [blame] | 54 | #ifndef DONT_HAVE_ERRNO_H |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 55 | #include <errno.h> |
Guido van Rossum | ff7e83d | 1999-08-27 20:39:37 +0000 | [diff] [blame] | 56 | #endif |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 57 | |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 58 | /* define the appropriate 64-bit capable tell() function */ |
Guido van Rossum | 1a5e583 | 2000-09-21 22:15:29 +0000 | [diff] [blame] | 59 | #if defined(MS_WIN64) |
| 60 | #define TELL64 _telli64 |
Guido van Rossum | ecaa777 | 2000-11-13 19:48:22 +0000 | [diff] [blame] | 61 | #elif defined(__NetBSD__) || defined(__OpenBSD__) || defined(_HAVE_BSDI) || defined(__APPLE__) |
Guido van Rossum | 1a5e583 | 2000-09-21 22:15:29 +0000 | [diff] [blame] | 62 | /* NOTE: this is only used on older |
| 63 | NetBSD prior to f*o() funcions */ |
| 64 | #define TELL64(fd) lseek((fd),0,SEEK_CUR) |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 65 | #endif |
| 66 | |
| 67 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 68 | typedef struct { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 69 | PyObject_HEAD |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 70 | FILE *f_fp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 71 | PyObject *f_name; |
| 72 | PyObject *f_mode; |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 73 | int (*f_close)(FILE *); |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 74 | int f_softspace; /* Flag used by 'print' command */ |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 75 | int f_binary; /* Flag which indicates whether the file is open |
| 76 | open in binary (1) or test (0) mode */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 77 | } PyFileObject; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 78 | |
| 79 | FILE * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 80 | PyFile_AsFile(PyObject *f) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 81 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 82 | if (f == NULL || !PyFile_Check(f)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 83 | return NULL; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 84 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 85 | return ((PyFileObject *)f)->f_fp; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 86 | } |
| 87 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 88 | PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 89 | PyFile_Name(PyObject *f) |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 90 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 91 | if (f == NULL || !PyFile_Check(f)) |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 92 | return NULL; |
| 93 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 94 | return ((PyFileObject *)f)->f_name; |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 95 | } |
| 96 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 97 | PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 98 | PyFile_FromFile(FILE *fp, char *name, char *mode, int (*close)(FILE *)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 99 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 100 | PyFileObject *f = PyObject_NEW(PyFileObject, &PyFile_Type); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 101 | if (f == NULL) |
| 102 | return NULL; |
| 103 | f->f_fp = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 104 | f->f_name = PyString_FromString(name); |
| 105 | f->f_mode = PyString_FromString(mode); |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 106 | f->f_close = close; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 107 | f->f_softspace = 0; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 108 | if (strchr(mode,'b') != NULL) |
| 109 | f->f_binary = 1; |
| 110 | else |
| 111 | f->f_binary = 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 112 | if (f->f_name == NULL || f->f_mode == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 113 | Py_DECREF(f); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 114 | return NULL; |
| 115 | } |
| 116 | f->f_fp = fp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 117 | return (PyObject *) f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 118 | } |
| 119 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 120 | PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 121 | PyFile_FromString(char *name, char *mode) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 122 | { |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 123 | extern int fclose(FILE *); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 124 | PyFileObject *f; |
| 125 | f = (PyFileObject *) PyFile_FromFile((FILE *)NULL, name, mode, fclose); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 126 | if (f == NULL) |
| 127 | return NULL; |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 128 | #ifdef HAVE_FOPENRF |
Guido van Rossum | a08095a | 1991-02-13 23:25:27 +0000 | [diff] [blame] | 129 | if (*mode == '*') { |
| 130 | FILE *fopenRF(); |
| 131 | f->f_fp = fopenRF(name, mode+1); |
| 132 | } |
| 133 | else |
| 134 | #endif |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 135 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 136 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 137 | f->f_fp = fopen(name, mode); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 138 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 139 | } |
Guido van Rossum | a08095a | 1991-02-13 23:25:27 +0000 | [diff] [blame] | 140 | if (f->f_fp == NULL) { |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 141 | #ifdef NO_FOPEN_ERRNO |
Barry Warsaw | 52ddc0e | 1998-07-23 16:07:02 +0000 | [diff] [blame] | 142 | /* Metroworks only, not testable, so unchanged */ |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 143 | if ( errno == 0 ) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 144 | PyErr_SetString(PyExc_IOError, "Cannot open file"); |
| 145 | Py_DECREF(f); |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 146 | return NULL; |
| 147 | } |
| 148 | #endif |
Barry Warsaw | 52ddc0e | 1998-07-23 16:07:02 +0000 | [diff] [blame] | 149 | PyErr_SetFromErrnoWithFilename(PyExc_IOError, name); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 150 | Py_DECREF(f); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 151 | return NULL; |
| 152 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 153 | return (PyObject *)f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 154 | } |
| 155 | |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 156 | void |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 157 | PyFile_SetBufSize(PyObject *f, int bufsize) |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 158 | { |
| 159 | if (bufsize >= 0) { |
| 160 | #ifdef HAVE_SETVBUF |
| 161 | int type; |
| 162 | switch (bufsize) { |
| 163 | case 0: |
| 164 | type = _IONBF; |
| 165 | break; |
| 166 | case 1: |
| 167 | type = _IOLBF; |
| 168 | bufsize = BUFSIZ; |
| 169 | break; |
| 170 | default: |
| 171 | type = _IOFBF; |
| 172 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 173 | setvbuf(((PyFileObject *)f)->f_fp, (char *)NULL, |
| 174 | type, bufsize); |
Guido van Rossum | f8b4de0 | 1998-03-06 15:32:40 +0000 | [diff] [blame] | 175 | #else /* !HAVE_SETVBUF */ |
| 176 | if (bufsize <= 1) |
| 177 | setbuf(((PyFileObject *)f)->f_fp, (char *)NULL); |
| 178 | #endif /* !HAVE_SETVBUF */ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 179 | } |
| 180 | } |
| 181 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 182 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 183 | err_closed(void) |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 184 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 185 | PyErr_SetString(PyExc_ValueError, "I/O operation on closed file"); |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 186 | return NULL; |
| 187 | } |
| 188 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 189 | /* Methods */ |
| 190 | |
| 191 | static void |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 192 | file_dealloc(PyFileObject *f) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 193 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 194 | if (f->f_fp != NULL && f->f_close != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 195 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 196 | (*f->f_close)(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 197 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 198 | } |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 199 | if (f->f_name != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 200 | Py_DECREF(f->f_name); |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 201 | } |
| 202 | if (f->f_mode != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 203 | Py_DECREF(f->f_mode); |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 204 | } |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 205 | PyObject_DEL(f); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 206 | } |
| 207 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 208 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 209 | file_repr(PyFileObject *f) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 210 | { |
| 211 | char buf[300]; |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 212 | sprintf(buf, "<%s file '%.256s', mode '%.10s' at %p>", |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 213 | f->f_fp == NULL ? "closed" : "open", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 214 | PyString_AsString(f->f_name), |
| 215 | PyString_AsString(f->f_mode), |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 216 | f); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 217 | return PyString_FromString(buf); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 218 | } |
| 219 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 220 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 221 | file_close(PyFileObject *f, PyObject *args) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 222 | { |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 223 | int sts = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 224 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 225 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 226 | if (f->f_fp != NULL) { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 227 | if (f->f_close != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 228 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 229 | errno = 0; |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 230 | sts = (*f->f_close)(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 231 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 232 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 233 | f->f_fp = NULL; |
| 234 | } |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 235 | if (sts == EOF) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 236 | return PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 237 | if (sts != 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 238 | return PyInt_FromLong((long)sts); |
| 239 | Py_INCREF(Py_None); |
| 240 | return Py_None; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 243 | |
| 244 | /* a portable fseek() function |
| 245 | return 0 on success, non-zero on failure (with errno set) */ |
| 246 | int |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 247 | #if defined(HAVE_LARGEFILE_SUPPORT) && SIZEOF_OFF_T < 8 && SIZEOF_FPOS_T >= 8 |
Fred Drake | 8ce159a | 2000-08-31 05:18:54 +0000 | [diff] [blame] | 248 | _portable_fseek(FILE *fp, fpos_t offset, int whence) |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 249 | #else |
Fred Drake | 8ce159a | 2000-08-31 05:18:54 +0000 | [diff] [blame] | 250 | _portable_fseek(FILE *fp, off_t offset, int whence) |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 251 | #endif |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 252 | { |
| 253 | #if defined(HAVE_FSEEKO) |
| 254 | return fseeko(fp, offset, whence); |
| 255 | #elif defined(HAVE_FSEEK64) |
| 256 | return fseek64(fp, offset, whence); |
Fred Drake | db810ac | 2000-10-06 20:42:33 +0000 | [diff] [blame] | 257 | #elif defined(__BEOS__) |
| 258 | return _fseek(fp, offset, whence); |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 259 | #elif defined(HAVE_LARGEFILE_SUPPORT) && SIZEOF_FPOS_T >= 8 |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 260 | /* lacking a 64-bit capable fseek() (as Win64 does) use a 64-bit capable |
| 261 | fsetpos() and tell() to implement fseek()*/ |
| 262 | fpos_t pos; |
| 263 | switch (whence) { |
| 264 | case SEEK_CUR: |
| 265 | if (fgetpos(fp, &pos) != 0) |
| 266 | return -1; |
| 267 | offset += pos; |
| 268 | break; |
| 269 | case SEEK_END: |
| 270 | /* do a "no-op" seek first to sync the buffering so that |
| 271 | the low-level tell() can be used correctly */ |
| 272 | if (fseek(fp, 0, SEEK_END) != 0) |
| 273 | return -1; |
| 274 | if ((pos = TELL64(fileno(fp))) == -1L) |
| 275 | return -1; |
| 276 | offset += pos; |
| 277 | break; |
| 278 | /* case SEEK_SET: break; */ |
| 279 | } |
| 280 | return fsetpos(fp, &offset); |
| 281 | #else |
| 282 | return fseek(fp, offset, whence); |
| 283 | #endif |
| 284 | } |
| 285 | |
| 286 | |
| 287 | /* a portable ftell() function |
| 288 | Return -1 on failure with errno set appropriately, current file |
| 289 | position on success */ |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 290 | #if defined(HAVE_LARGEFILE_SUPPORT) && SIZEOF_OFF_T < 8 && SIZEOF_FPOS_T >= 8 |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 291 | fpos_t |
| 292 | #else |
| 293 | off_t |
| 294 | #endif |
Fred Drake | 8ce159a | 2000-08-31 05:18:54 +0000 | [diff] [blame] | 295 | _portable_ftell(FILE* fp) |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 296 | { |
| 297 | #if defined(HAVE_FTELLO) && defined(HAVE_LARGEFILE_SUPPORT) |
| 298 | return ftello(fp); |
| 299 | #elif defined(HAVE_FTELL64) && defined(HAVE_LARGEFILE_SUPPORT) |
| 300 | return ftell64(fp); |
| 301 | #elif SIZEOF_FPOS_T >= 8 && defined(HAVE_LARGEFILE_SUPPORT) |
| 302 | fpos_t pos; |
| 303 | if (fgetpos(fp, &pos) != 0) |
| 304 | return -1; |
| 305 | return pos; |
| 306 | #else |
| 307 | return ftell(fp); |
| 308 | #endif |
| 309 | } |
| 310 | |
| 311 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 312 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 313 | file_seek(PyFileObject *f, PyObject *args) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 314 | { |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 315 | int whence; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 316 | int ret; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 317 | #if defined(HAVE_LARGEFILE_SUPPORT) && SIZEOF_OFF_T < 8 && SIZEOF_FPOS_T >= 8 |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 318 | fpos_t offset, pos; |
| 319 | #else |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 320 | off_t offset; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 321 | #endif /* !MS_WIN64 */ |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 322 | PyObject *offobj; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 323 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 324 | if (f->f_fp == NULL) |
| 325 | return err_closed(); |
| 326 | whence = 0; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 327 | if (!PyArg_ParseTuple(args, "O|i:seek", &offobj, &whence)) |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 328 | return NULL; |
| 329 | #if !defined(HAVE_LARGEFILE_SUPPORT) |
| 330 | offset = PyInt_AsLong(offobj); |
| 331 | #else |
| 332 | offset = PyLong_Check(offobj) ? |
| 333 | PyLong_AsLongLong(offobj) : PyInt_AsLong(offobj); |
| 334 | #endif |
| 335 | if (PyErr_Occurred()) |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 336 | return NULL; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 337 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 338 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 339 | errno = 0; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 340 | ret = _portable_fseek(f->f_fp, offset, whence); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 341 | Py_END_ALLOW_THREADS |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 342 | |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 343 | if (ret != 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 344 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 345 | clearerr(f->f_fp); |
| 346 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 347 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 348 | Py_INCREF(Py_None); |
| 349 | return Py_None; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 350 | } |
| 351 | |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 352 | |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 353 | #ifdef HAVE_FTRUNCATE |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 354 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 355 | file_truncate(PyFileObject *f, PyObject *args) |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 356 | { |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 357 | int ret; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 358 | #if defined(HAVE_LARGEFILE_SUPPORT) && SIZEOF_OFF_T < 8 && SIZEOF_FPOS_T >= 8 |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 359 | fpos_t newsize; |
| 360 | #else |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 361 | off_t newsize; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 362 | #endif |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 363 | PyObject *newsizeobj; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 364 | |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 365 | if (f->f_fp == NULL) |
| 366 | return err_closed(); |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 367 | newsizeobj = NULL; |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 368 | if (!PyArg_ParseTuple(args, "|O:truncate", &newsizeobj)) |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 369 | return NULL; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 370 | if (newsizeobj != NULL) { |
| 371 | #if !defined(HAVE_LARGEFILE_SUPPORT) |
| 372 | newsize = PyInt_AsLong(newsizeobj); |
| 373 | #else |
| 374 | newsize = PyLong_Check(newsizeobj) ? |
| 375 | PyLong_AsLongLong(newsizeobj) : |
| 376 | PyInt_AsLong(newsizeobj); |
| 377 | #endif |
| 378 | if (PyErr_Occurred()) |
| 379 | return NULL; |
| 380 | } else { |
| 381 | /* Default to current position*/ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 382 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 383 | errno = 0; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 384 | newsize = _portable_ftell(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 385 | Py_END_ALLOW_THREADS |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 386 | if (newsize == -1) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 387 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 388 | clearerr(f->f_fp); |
| 389 | return NULL; |
| 390 | } |
| 391 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 392 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 393 | errno = 0; |
| 394 | ret = fflush(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 395 | Py_END_ALLOW_THREADS |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 396 | if (ret != 0) goto onioerror; |
| 397 | |
| 398 | #ifdef MS_WIN32 |
| 399 | /* can use _chsize; if, however, the newsize overflows 32-bits then |
| 400 | _chsize is *not* adequate; in this case, an OverflowError is raised */ |
| 401 | if (newsize > LONG_MAX) { |
| 402 | PyErr_SetString(PyExc_OverflowError, |
| 403 | "the new size is too long for _chsize (it is limited to 32-bit values)"); |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 404 | return NULL; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 405 | } else { |
| 406 | Py_BEGIN_ALLOW_THREADS |
| 407 | errno = 0; |
| 408 | ret = _chsize(fileno(f->f_fp), newsize); |
| 409 | Py_END_ALLOW_THREADS |
| 410 | if (ret != 0) goto onioerror; |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 411 | } |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 412 | #else |
| 413 | Py_BEGIN_ALLOW_THREADS |
| 414 | errno = 0; |
| 415 | ret = ftruncate(fileno(f->f_fp), newsize); |
| 416 | Py_END_ALLOW_THREADS |
| 417 | if (ret != 0) goto onioerror; |
| 418 | #endif /* !MS_WIN32 */ |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 419 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 420 | Py_INCREF(Py_None); |
| 421 | return Py_None; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 422 | |
| 423 | onioerror: |
| 424 | PyErr_SetFromErrno(PyExc_IOError); |
| 425 | clearerr(f->f_fp); |
| 426 | return NULL; |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 427 | } |
| 428 | #endif /* HAVE_FTRUNCATE */ |
| 429 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 430 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 431 | file_tell(PyFileObject *f, PyObject *args) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 432 | { |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 433 | #if defined(HAVE_LARGEFILE_SUPPORT) && SIZEOF_OFF_T < 8 && SIZEOF_FPOS_T >= 8 |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 434 | fpos_t pos; |
| 435 | #else |
| 436 | off_t pos; |
| 437 | #endif |
| 438 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 439 | if (f->f_fp == NULL) |
| 440 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 441 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 442 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 443 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 444 | errno = 0; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 445 | pos = _portable_ftell(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 446 | Py_END_ALLOW_THREADS |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 447 | if (pos == -1) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 448 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 449 | clearerr(f->f_fp); |
| 450 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 451 | } |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 452 | #if !defined(HAVE_LARGEFILE_SUPPORT) |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 453 | return PyInt_FromLong(pos); |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 454 | #else |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 455 | return PyLong_FromLongLong(pos); |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 456 | #endif |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 457 | } |
| 458 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 459 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 460 | file_fileno(PyFileObject *f, PyObject *args) |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 461 | { |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 462 | if (f->f_fp == NULL) |
| 463 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 464 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 465 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 466 | return PyInt_FromLong((long) fileno(f->f_fp)); |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 467 | } |
| 468 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 469 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 470 | file_flush(PyFileObject *f, PyObject *args) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 471 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 472 | int res; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 473 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 474 | if (f->f_fp == NULL) |
| 475 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 476 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 477 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 478 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 479 | errno = 0; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 480 | res = fflush(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 481 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 482 | if (res != 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 483 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 484 | clearerr(f->f_fp); |
| 485 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 486 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 487 | Py_INCREF(Py_None); |
| 488 | return Py_None; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 489 | } |
| 490 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 491 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 492 | file_isatty(PyFileObject *f, PyObject *args) |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 493 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 494 | long res; |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 495 | if (f->f_fp == NULL) |
| 496 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 497 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 498 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 499 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 500 | res = isatty((int)fileno(f->f_fp)); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 501 | Py_END_ALLOW_THREADS |
| 502 | return PyInt_FromLong(res); |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 503 | } |
| 504 | |
Guido van Rossum | ff7e83d | 1999-08-27 20:39:37 +0000 | [diff] [blame] | 505 | |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 506 | #if BUFSIZ < 8192 |
| 507 | #define SMALLCHUNK 8192 |
| 508 | #else |
| 509 | #define SMALLCHUNK BUFSIZ |
| 510 | #endif |
| 511 | |
Guido van Rossum | 3c25904 | 1999-01-14 19:00:14 +0000 | [diff] [blame] | 512 | #if SIZEOF_INT < 4 |
| 513 | #define BIGCHUNK (512 * 32) |
| 514 | #else |
| 515 | #define BIGCHUNK (512 * 1024) |
| 516 | #endif |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 517 | |
| 518 | static size_t |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 519 | new_buffersize(PyFileObject *f, size_t currentsize) |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 520 | { |
| 521 | #ifdef HAVE_FSTAT |
| 522 | long pos, end; |
| 523 | struct stat st; |
| 524 | if (fstat(fileno(f->f_fp), &st) == 0) { |
| 525 | end = st.st_size; |
Guido van Rossum | cada293 | 1998-12-11 20:44:56 +0000 | [diff] [blame] | 526 | /* The following is not a bug: we really need to call lseek() |
| 527 | *and* ftell(). The reason is that some stdio libraries |
| 528 | mistakenly flush their buffer when ftell() is called and |
| 529 | the lseek() call it makes fails, thereby throwing away |
| 530 | data that cannot be recovered in any way. To avoid this, |
| 531 | we first test lseek(), and only call ftell() if lseek() |
| 532 | works. We can't use the lseek() value either, because we |
| 533 | need to take the amount of buffered data into account. |
| 534 | (Yet another reason why stdio stinks. :-) */ |
Guido van Rossum | 91aaa92 | 1998-05-05 22:21:35 +0000 | [diff] [blame] | 535 | pos = lseek(fileno(f->f_fp), 0L, SEEK_CUR); |
| 536 | if (pos >= 0) |
| 537 | pos = ftell(f->f_fp); |
Guido van Rossum | d30dc0a | 1998-04-27 19:01:08 +0000 | [diff] [blame] | 538 | if (pos < 0) |
| 539 | clearerr(f->f_fp); |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 540 | if (end > pos && pos >= 0) |
Guido van Rossum | cada293 | 1998-12-11 20:44:56 +0000 | [diff] [blame] | 541 | return currentsize + end - pos + 1; |
Guido van Rossum | dcb5e7f | 1998-03-03 22:36:10 +0000 | [diff] [blame] | 542 | /* Add 1 so if the file were to grow we'd notice. */ |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 543 | } |
| 544 | #endif |
| 545 | if (currentsize > SMALLCHUNK) { |
| 546 | /* Keep doubling until we reach BIGCHUNK; |
| 547 | then keep adding BIGCHUNK. */ |
| 548 | if (currentsize <= BIGCHUNK) |
| 549 | return currentsize + currentsize; |
| 550 | else |
| 551 | return currentsize + BIGCHUNK; |
| 552 | } |
| 553 | return currentsize + SMALLCHUNK; |
| 554 | } |
| 555 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 556 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 557 | file_read(PyFileObject *f, PyObject *args) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 558 | { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 559 | long bytesrequested = -1; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 560 | size_t bytesread, buffersize, chunksize; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 561 | PyObject *v; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 562 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 563 | if (f->f_fp == NULL) |
| 564 | return err_closed(); |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 565 | if (!PyArg_ParseTuple(args, "|l:read", &bytesrequested)) |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 566 | return NULL; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 567 | if (bytesrequested < 0) |
Guido van Rossum | ff1ccbf | 1999-04-10 15:48:23 +0000 | [diff] [blame] | 568 | buffersize = new_buffersize(f, (size_t)0); |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 569 | else |
| 570 | buffersize = bytesrequested; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 571 | if (buffersize > INT_MAX) { |
| 572 | PyErr_SetString(PyExc_OverflowError, |
| 573 | "requested number of bytes is more than a Python string can hold"); |
| 574 | return NULL; |
| 575 | } |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 576 | v = PyString_FromStringAndSize((char *)NULL, buffersize); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 577 | if (v == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 578 | return NULL; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 579 | bytesread = 0; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 580 | for (;;) { |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 581 | Py_BEGIN_ALLOW_THREADS |
| 582 | errno = 0; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 583 | chunksize = fread(BUF(v) + bytesread, 1, |
| 584 | buffersize - bytesread, f->f_fp); |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 585 | Py_END_ALLOW_THREADS |
| 586 | if (chunksize == 0) { |
| 587 | if (!ferror(f->f_fp)) |
| 588 | break; |
| 589 | PyErr_SetFromErrno(PyExc_IOError); |
| 590 | clearerr(f->f_fp); |
| 591 | Py_DECREF(v); |
| 592 | return NULL; |
| 593 | } |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 594 | bytesread += chunksize; |
| 595 | if (bytesread < buffersize) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 596 | break; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 597 | if (bytesrequested < 0) { |
Guido van Rossum | cada293 | 1998-12-11 20:44:56 +0000 | [diff] [blame] | 598 | buffersize = new_buffersize(f, buffersize); |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 599 | if (_PyString_Resize(&v, buffersize) < 0) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 600 | return NULL; |
| 601 | } |
| 602 | } |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 603 | if (bytesread != buffersize) |
| 604 | _PyString_Resize(&v, bytesread); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 605 | return v; |
| 606 | } |
| 607 | |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 608 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 609 | file_readinto(PyFileObject *f, PyObject *args) |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 610 | { |
| 611 | char *ptr; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 612 | size_t ntodo, ndone, nnow; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 613 | |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 614 | if (f->f_fp == NULL) |
| 615 | return err_closed(); |
| 616 | if (!PyArg_Parse(args, "w#", &ptr, &ntodo)) |
| 617 | return NULL; |
| 618 | ndone = 0; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 619 | while (ntodo > 0) { |
| 620 | Py_BEGIN_ALLOW_THREADS |
| 621 | errno = 0; |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 622 | nnow = fread(ptr+ndone, 1, ntodo, f->f_fp); |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 623 | Py_END_ALLOW_THREADS |
| 624 | if (nnow == 0) { |
| 625 | if (!ferror(f->f_fp)) |
| 626 | break; |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 627 | PyErr_SetFromErrno(PyExc_IOError); |
| 628 | clearerr(f->f_fp); |
| 629 | return NULL; |
| 630 | } |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 631 | ndone += nnow; |
| 632 | ntodo -= nnow; |
| 633 | } |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 634 | return PyInt_FromLong((long)ndone); |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 635 | } |
| 636 | |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 637 | /************************************************************************** |
| 638 | Win32 MS routine to get next line. |
| 639 | |
| 640 | Under MSVC 6: |
| 641 | |
| 642 | + MS threadsafe getc is very slow (multiple layers of function calls |
| 643 | before+after each character, to lock+unlock the stream). |
| 644 | + The stream-locking functions are MS-internal -- can't access them |
| 645 | from user code. |
| 646 | + There's nothing Tim could find in the MS C or platform SDK libraries |
| 647 | that can worm around this. |
| 648 | + MS fgets locks/unlocks only once per line; it's the only hook we have. |
| 649 | |
| 650 | So we use fgets for speed(!), despite that it's painful. |
| 651 | |
| 652 | MS realloc is also slow. |
| 653 | |
| 654 | In the usual case, we have one pleasantly small line already sitting in a |
| 655 | stdio buffer, and we optimize heavily for that case. |
| 656 | |
| 657 | CAUTION: This routine cheats, relying on how MSVC 6 works internally. |
| 658 | They seem to be relatively safe cheats, but we should expect this code |
| 659 | to break someday. |
| 660 | **************************************************************************/ |
| 661 | |
| 662 | /* if Win32 and MS's compiler */ |
| 663 | #if defined(MS_WIN32) && defined(_MSC_VER) |
| 664 | #define USE_MS_GETLINE_HACK |
| 665 | #endif |
| 666 | |
| 667 | #ifdef USE_MS_GETLINE_HACK |
| 668 | static PyObject* |
| 669 | ms_getline_hack(FILE *fp) |
| 670 | { |
| 671 | #define INITBUFSIZE 100 |
| 672 | #define INCBUFSIZE 1000 |
| 673 | PyObject* v; /* the string object result */ |
| 674 | size_t total_v_size; /* total # chars in v's buffer */ |
| 675 | char* pvfree; /* address of next free slot */ |
| 676 | char* pvend; /* address one beyond last free slot */ |
| 677 | char* p; /* temp */ |
| 678 | |
| 679 | if (fp->_cnt > 0) { /* HACK: "_cnt" isn't advertised */ |
| 680 | /* optimize for normal case: something sitting in the |
| 681 | * buffer ready to go; avoid thread fiddling & realloc |
| 682 | * if possible |
| 683 | */ |
| 684 | char msbuf[INITBUFSIZE]; |
| 685 | memset(msbuf, '\n', INITBUFSIZE); |
| 686 | p = fgets(msbuf, INITBUFSIZE, fp); |
| 687 | /* since we didn't lock the file, there's no guarantee |
| 688 | * anything was still in the buffer |
| 689 | */ |
| 690 | if (p == NULL) { |
| 691 | clearerr(fp); |
| 692 | if (PyErr_CheckSignals()) |
| 693 | return NULL; |
| 694 | v = PyString_FromStringAndSize("", 0); |
| 695 | return v; |
| 696 | } |
| 697 | /* fgets read *something* */ |
| 698 | p = memchr(msbuf, '\n', INITBUFSIZE); |
| 699 | if (p != NULL) { |
| 700 | /* Did the \n come from fgets or from us? |
| 701 | * Since fgets stops at the first \n, and then |
| 702 | * writes \0, if it's from fgets a \0 must be next. |
| 703 | * But if that's so, it could not have come from us, |
| 704 | * since the \n's we filled the buffer with have only |
| 705 | * more \n's to the right. |
| 706 | */ |
| 707 | pvend = msbuf + INITBUFSIZE; |
| 708 | if (p+1 < pvend && *(p+1) == '\0') { |
| 709 | /* it's from fgets: we win! */ |
| 710 | v = PyString_FromStringAndSize(msbuf, |
| 711 | p - msbuf + 1); |
| 712 | return v; |
| 713 | } |
| 714 | /* Must be from us: fgets didn't fill the buffer |
| 715 | * and didn't find a newline, so it must be the |
| 716 | * last and newline-free line of the file. |
| 717 | */ |
| 718 | assert(p > msbuf && *(p-1) == '\0'); |
| 719 | v = PyString_FromStringAndSize(msbuf, p - msbuf - 1); |
| 720 | return v; |
| 721 | } |
| 722 | /* yuck: fgets overwrote all the newlines, i.e. the entire |
| 723 | * buffer. So this line isn't over yet, or maybe it is but |
| 724 | * we're exactly at EOF; in either case, we're tired <wink>. |
| 725 | */ |
| 726 | assert(msbuf[INITBUFSIZE-1] == '\0'); |
| 727 | total_v_size = INITBUFSIZE + INCBUFSIZE; |
| 728 | v = PyString_FromStringAndSize((char*)NULL, |
| 729 | (int)total_v_size); |
| 730 | if (v == NULL) |
| 731 | return v; |
| 732 | /* copy over everything except the last null byte */ |
| 733 | memcpy(BUF(v), msbuf, INITBUFSIZE-1); |
| 734 | pvfree = BUF(v) + INITBUFSIZE - 1; |
| 735 | } |
| 736 | else { |
| 737 | /* The stream isn't ready or isn't buffered. */ |
| 738 | v = PyString_FromStringAndSize((char*)NULL, INITBUFSIZE); |
| 739 | if (v == NULL) |
| 740 | return v; |
| 741 | total_v_size = INITBUFSIZE; |
| 742 | pvfree = BUF(v); |
| 743 | } |
| 744 | |
| 745 | /* Keep reading stuff into v; if it ever ends successfully, break |
| 746 | * after setting p one beyond the end of the line. |
| 747 | */ |
| 748 | for (;;) { |
| 749 | size_t nfree; |
| 750 | |
| 751 | Py_BEGIN_ALLOW_THREADS |
| 752 | pvend = BUF(v) + total_v_size; |
| 753 | nfree = pvend - pvfree; |
| 754 | memset(pvfree, '\n', nfree); |
| 755 | p = fgets(pvfree, nfree, fp); |
| 756 | Py_END_ALLOW_THREADS |
| 757 | |
| 758 | if (p == NULL) { |
| 759 | clearerr(fp); |
| 760 | if (PyErr_CheckSignals()) { |
| 761 | Py_DECREF(v); |
| 762 | return NULL; |
| 763 | } |
| 764 | p = pvfree; |
| 765 | break; |
| 766 | } |
| 767 | /* See the "normal case" comments above for details. */ |
| 768 | p = memchr(pvfree, '\n', nfree); |
| 769 | if (p != NULL) { |
| 770 | if (p+1 < pvend && *(p+1) == '\0') { |
| 771 | /* \n came from fgets */ |
| 772 | ++p; |
| 773 | break; |
| 774 | } |
| 775 | /* \n came from us; last line of file, no newline */ |
| 776 | assert(p > pvfree && *(p-1) == '\0'); |
| 777 | --p; |
| 778 | break; |
| 779 | } |
| 780 | /* expand buffer and try again */ |
| 781 | assert(*(pvend-1) == '\0'); |
| 782 | total_v_size += INCBUFSIZE; |
| 783 | if (total_v_size > INT_MAX) { |
| 784 | PyErr_SetString(PyExc_OverflowError, |
| 785 | "line is longer than a Python string can hold"); |
| 786 | Py_DECREF(v); |
| 787 | return NULL; |
| 788 | } |
| 789 | if (_PyString_Resize(&v, (int)total_v_size) < 0) |
| 790 | return NULL; |
| 791 | /* overwrite the trailing null byte */ |
| 792 | pvfree = BUF(v) + (total_v_size - INCBUFSIZE - 1); |
| 793 | } |
| 794 | if (BUF(v) + total_v_size != p) |
| 795 | _PyString_Resize(&v, p - BUF(v)); |
| 796 | return v; |
| 797 | #undef INITBUFSIZE |
| 798 | #undef INCBUFSIZE |
| 799 | } |
| 800 | #endif /* ifdef USE_MS_GETLINE_HACK */ |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 801 | |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 802 | /* Internal routine to get a line. |
| 803 | Size argument interpretation: |
| 804 | > 0: max length; |
| 805 | = 0: read arbitrary line; |
Guido van Rossum | 4ddf0a0 | 2001-01-07 20:51:39 +0000 | [diff] [blame] | 806 | < 0: invalid |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 807 | */ |
| 808 | |
Guido van Rossum | 1187aa4 | 2001-01-05 14:43:05 +0000 | [diff] [blame] | 809 | #ifdef HAVE_GETC_UNLOCKED |
| 810 | #define GETC(f) getc_unlocked(f) |
| 811 | #define FLOCKFILE(f) flockfile(f) |
| 812 | #define FUNLOCKFILE(f) funlockfile(f) |
| 813 | #else |
| 814 | #define GETC(f) getc(f) |
| 815 | #define FLOCKFILE(f) |
| 816 | #define FUNLOCKFILE(f) |
| 817 | #endif |
| 818 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 819 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 820 | get_line(PyFileObject *f, int n) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 821 | { |
Guido van Rossum | 1187aa4 | 2001-01-05 14:43:05 +0000 | [diff] [blame] | 822 | FILE *fp = f->f_fp; |
| 823 | int c; |
Andrew M. Kuchling | 4b2b445 | 2000-11-29 02:53:22 +0000 | [diff] [blame] | 824 | char *buf, *end; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 825 | size_t n1, n2; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 826 | PyObject *v; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 827 | |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 828 | #ifdef USE_MS_GETLINE_HACK |
| 829 | if (n == 0) |
| 830 | return ms_getline_hack(fp); |
| 831 | #endif |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 832 | n2 = n > 0 ? n : 100; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 833 | v = PyString_FromStringAndSize((char *)NULL, n2); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 834 | if (v == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 835 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 836 | buf = BUF(v); |
| 837 | end = buf + n2; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 838 | |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 839 | for (;;) { |
Guido van Rossum | 1187aa4 | 2001-01-05 14:43:05 +0000 | [diff] [blame] | 840 | Py_BEGIN_ALLOW_THREADS |
| 841 | FLOCKFILE(fp); |
| 842 | while ((c = GETC(fp)) != EOF && |
| 843 | (*buf++ = c) != '\n' && |
| 844 | buf != end) |
| 845 | ; |
| 846 | FUNLOCKFILE(fp); |
| 847 | Py_END_ALLOW_THREADS |
| 848 | if (c == '\n') |
| 849 | break; |
| 850 | if (c == EOF) { |
Guido van Rossum | 76ad8ed | 1991-06-03 10:54:55 +0000 | [diff] [blame] | 851 | clearerr(fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 852 | if (PyErr_CheckSignals()) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 853 | Py_DECREF(v); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 854 | return NULL; |
| 855 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 856 | break; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 857 | } |
Guido van Rossum | 1187aa4 | 2001-01-05 14:43:05 +0000 | [diff] [blame] | 858 | /* Must be because buf == end */ |
| 859 | if (n > 0) |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 860 | break; |
Guido van Rossum | 1187aa4 | 2001-01-05 14:43:05 +0000 | [diff] [blame] | 861 | n1 = n2; |
| 862 | n2 += 1000; |
| 863 | if (n2 > INT_MAX) { |
| 864 | PyErr_SetString(PyExc_OverflowError, |
| 865 | "line is longer than a Python string can hold"); |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 866 | Py_DECREF(v); |
Guido van Rossum | 1187aa4 | 2001-01-05 14:43:05 +0000 | [diff] [blame] | 867 | return NULL; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 868 | } |
Guido van Rossum | 1187aa4 | 2001-01-05 14:43:05 +0000 | [diff] [blame] | 869 | if (_PyString_Resize(&v, n2) < 0) |
| 870 | return NULL; |
| 871 | buf = BUF(v) + n1; |
| 872 | end = BUF(v) + n2; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 873 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 874 | |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 875 | n1 = buf - BUF(v); |
| 876 | if (n1 != n2) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 877 | _PyString_Resize(&v, n1); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 878 | return v; |
| 879 | } |
| 880 | |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 881 | /* External C interface */ |
| 882 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 883 | PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 884 | PyFile_GetLine(PyObject *f, int n) |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 885 | { |
Guido van Rossum | 4ddf0a0 | 2001-01-07 20:51:39 +0000 | [diff] [blame] | 886 | PyObject *result; |
| 887 | |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 888 | if (f == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 889 | PyErr_BadInternalCall(); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 890 | return NULL; |
| 891 | } |
Guido van Rossum | 4ddf0a0 | 2001-01-07 20:51:39 +0000 | [diff] [blame] | 892 | |
| 893 | if (PyFile_Check(f)) { |
| 894 | if (((PyFileObject*)f)->f_fp == NULL) |
| 895 | return err_closed(); |
| 896 | result = get_line((PyFileObject *)f, n); |
| 897 | } |
| 898 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 899 | PyObject *reader; |
| 900 | PyObject *args; |
Guido van Rossum | 4ddf0a0 | 2001-01-07 20:51:39 +0000 | [diff] [blame] | 901 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 902 | reader = PyObject_GetAttrString(f, "readline"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 903 | if (reader == NULL) |
| 904 | return NULL; |
| 905 | if (n <= 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 906 | args = Py_BuildValue("()"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 907 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 908 | args = Py_BuildValue("(i)", n); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 909 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 910 | Py_DECREF(reader); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 911 | return NULL; |
| 912 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 913 | result = PyEval_CallObject(reader, args); |
| 914 | Py_DECREF(reader); |
| 915 | Py_DECREF(args); |
| 916 | if (result != NULL && !PyString_Check(result)) { |
| 917 | Py_DECREF(result); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 918 | result = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 919 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 920 | "object.readline() returned non-string"); |
| 921 | } |
Guido van Rossum | 4ddf0a0 | 2001-01-07 20:51:39 +0000 | [diff] [blame] | 922 | } |
| 923 | |
| 924 | if (n < 0 && result != NULL && PyString_Check(result)) { |
| 925 | char *s = PyString_AS_STRING(result); |
| 926 | int len = PyString_GET_SIZE(result); |
| 927 | if (len == 0) { |
| 928 | Py_DECREF(result); |
| 929 | result = NULL; |
| 930 | PyErr_SetString(PyExc_EOFError, |
| 931 | "EOF when reading a line"); |
| 932 | } |
| 933 | else if (s[len-1] == '\n') { |
| 934 | if (result->ob_refcnt == 1) |
| 935 | _PyString_Resize(&result, len-1); |
| 936 | else { |
| 937 | PyObject *v; |
| 938 | v = PyString_FromStringAndSize(s, len-1); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 939 | Py_DECREF(result); |
Guido van Rossum | 4ddf0a0 | 2001-01-07 20:51:39 +0000 | [diff] [blame] | 940 | result = v; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 941 | } |
| 942 | } |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 943 | } |
Guido van Rossum | 4ddf0a0 | 2001-01-07 20:51:39 +0000 | [diff] [blame] | 944 | return result; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 945 | } |
| 946 | |
| 947 | /* Python method */ |
| 948 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 949 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 950 | file_readline(PyFileObject *f, PyObject *args) |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 951 | { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 952 | int n = -1; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 953 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 954 | if (f->f_fp == NULL) |
| 955 | return err_closed(); |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 956 | if (!PyArg_ParseTuple(args, "|i:readline", &n)) |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 957 | return NULL; |
| 958 | if (n == 0) |
| 959 | return PyString_FromString(""); |
| 960 | if (n < 0) |
| 961 | n = 0; |
Marc-André Lemburg | 1f46860 | 2000-07-05 15:32:40 +0000 | [diff] [blame] | 962 | return get_line(f, n); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 963 | } |
| 964 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 965 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 966 | file_readlines(PyFileObject *f, PyObject *args) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 967 | { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 968 | long sizehint = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 969 | PyObject *list; |
| 970 | PyObject *line; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 971 | char small_buffer[SMALLCHUNK]; |
| 972 | char *buffer = small_buffer; |
| 973 | size_t buffersize = SMALLCHUNK; |
| 974 | PyObject *big_buffer = NULL; |
| 975 | size_t nfilled = 0; |
| 976 | size_t nread; |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 977 | size_t totalread = 0; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 978 | char *p, *q, *end; |
| 979 | int err; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 980 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 981 | if (f->f_fp == NULL) |
| 982 | return err_closed(); |
Guido van Rossum | 43713e5 | 2000-02-29 13:59:29 +0000 | [diff] [blame] | 983 | if (!PyArg_ParseTuple(args, "|l:readlines", &sizehint)) |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 984 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 985 | if ((list = PyList_New(0)) == NULL) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 986 | return NULL; |
| 987 | for (;;) { |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 988 | Py_BEGIN_ALLOW_THREADS |
| 989 | errno = 0; |
| 990 | nread = fread(buffer+nfilled, 1, buffersize-nfilled, f->f_fp); |
| 991 | Py_END_ALLOW_THREADS |
| 992 | if (nread == 0) { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 993 | sizehint = 0; |
Guido van Rossum | 3da3fce | 1998-02-19 20:46:48 +0000 | [diff] [blame] | 994 | if (!ferror(f->f_fp)) |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 995 | break; |
| 996 | PyErr_SetFromErrno(PyExc_IOError); |
| 997 | clearerr(f->f_fp); |
| 998 | error: |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 999 | Py_DECREF(list); |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 1000 | list = NULL; |
| 1001 | goto cleanup; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 1002 | } |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 1003 | totalread += nread; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 1004 | p = memchr(buffer+nfilled, '\n', nread); |
| 1005 | if (p == NULL) { |
| 1006 | /* Need a larger buffer to fit this line */ |
| 1007 | nfilled += nread; |
| 1008 | buffersize *= 2; |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 1009 | if (buffersize > INT_MAX) { |
| 1010 | PyErr_SetString(PyExc_OverflowError, |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 1011 | "line is longer than a Python string can hold"); |
Trent Mick | f29f47b | 2000-08-11 19:02:59 +0000 | [diff] [blame] | 1012 | goto error; |
| 1013 | } |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 1014 | if (big_buffer == NULL) { |
| 1015 | /* Create the big buffer */ |
| 1016 | big_buffer = PyString_FromStringAndSize( |
| 1017 | NULL, buffersize); |
| 1018 | if (big_buffer == NULL) |
| 1019 | goto error; |
| 1020 | buffer = PyString_AS_STRING(big_buffer); |
| 1021 | memcpy(buffer, small_buffer, nfilled); |
| 1022 | } |
| 1023 | else { |
| 1024 | /* Grow the big buffer */ |
| 1025 | _PyString_Resize(&big_buffer, buffersize); |
| 1026 | buffer = PyString_AS_STRING(big_buffer); |
| 1027 | } |
| 1028 | continue; |
| 1029 | } |
| 1030 | end = buffer+nfilled+nread; |
| 1031 | q = buffer; |
| 1032 | do { |
| 1033 | /* Process complete lines */ |
| 1034 | p++; |
| 1035 | line = PyString_FromStringAndSize(q, p-q); |
| 1036 | if (line == NULL) |
| 1037 | goto error; |
| 1038 | err = PyList_Append(list, line); |
| 1039 | Py_DECREF(line); |
| 1040 | if (err != 0) |
| 1041 | goto error; |
| 1042 | q = p; |
| 1043 | p = memchr(q, '\n', end-q); |
| 1044 | } while (p != NULL); |
| 1045 | /* Move the remaining incomplete line to the start */ |
| 1046 | nfilled = end-q; |
| 1047 | memmove(buffer, q, nfilled); |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 1048 | if (sizehint > 0) |
| 1049 | if (totalread >= (size_t)sizehint) |
| 1050 | break; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 1051 | } |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 1052 | if (nfilled != 0) { |
| 1053 | /* Partial last line */ |
| 1054 | line = PyString_FromStringAndSize(buffer, nfilled); |
| 1055 | if (line == NULL) |
| 1056 | goto error; |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 1057 | if (sizehint > 0) { |
| 1058 | /* Need to complete the last line */ |
Marc-André Lemburg | 1f46860 | 2000-07-05 15:32:40 +0000 | [diff] [blame] | 1059 | PyObject *rest = get_line(f, 0); |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 1060 | if (rest == NULL) { |
| 1061 | Py_DECREF(line); |
| 1062 | goto error; |
| 1063 | } |
| 1064 | PyString_Concat(&line, rest); |
| 1065 | Py_DECREF(rest); |
| 1066 | if (line == NULL) |
| 1067 | goto error; |
| 1068 | } |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 1069 | err = PyList_Append(list, line); |
| 1070 | Py_DECREF(line); |
| 1071 | if (err != 0) |
| 1072 | goto error; |
| 1073 | } |
| 1074 | cleanup: |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 1075 | if (big_buffer) { |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 1076 | Py_DECREF(big_buffer); |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 1077 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 1078 | return list; |
| 1079 | } |
| 1080 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1081 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1082 | file_write(PyFileObject *f, PyObject *args) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1083 | { |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 1084 | char *s; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1085 | int n, n2; |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 1086 | if (f->f_fp == NULL) |
| 1087 | return err_closed(); |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 1088 | if (!PyArg_Parse(args, f->f_binary ? "s#" : "t#", &s, &n)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1089 | return NULL; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 1090 | f->f_softspace = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1091 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1092 | errno = 0; |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 1093 | n2 = fwrite(s, 1, n, f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1094 | Py_END_ALLOW_THREADS |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1095 | if (n2 != n) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1096 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 1097 | clearerr(f->f_fp); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1098 | return NULL; |
| 1099 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1100 | Py_INCREF(Py_None); |
| 1101 | return Py_None; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1102 | } |
| 1103 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1104 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1105 | file_writelines(PyFileObject *f, PyObject *args) |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 1106 | { |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1107 | #define CHUNKSIZE 1000 |
| 1108 | PyObject *list, *line; |
| 1109 | PyObject *result; |
| 1110 | int i, j, index, len, nwritten, islist; |
| 1111 | |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 1112 | if (f->f_fp == NULL) |
| 1113 | return err_closed(); |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1114 | if (args == NULL || !PySequence_Check(args)) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1115 | PyErr_SetString(PyExc_TypeError, |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 1116 | "writelines() argument must be a sequence of strings"); |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 1117 | return NULL; |
| 1118 | } |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1119 | islist = PyList_Check(args); |
| 1120 | |
| 1121 | /* Strategy: slurp CHUNKSIZE lines into a private list, |
| 1122 | checking that they are all strings, then write that list |
| 1123 | without holding the interpreter lock, then come back for more. */ |
| 1124 | index = 0; |
| 1125 | if (islist) |
| 1126 | list = NULL; |
| 1127 | else { |
| 1128 | list = PyList_New(CHUNKSIZE); |
| 1129 | if (list == NULL) |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 1130 | return NULL; |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 1131 | } |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1132 | result = NULL; |
| 1133 | |
| 1134 | for (;;) { |
| 1135 | if (islist) { |
| 1136 | Py_XDECREF(list); |
| 1137 | list = PyList_GetSlice(args, index, index+CHUNKSIZE); |
| 1138 | if (list == NULL) |
| 1139 | return NULL; |
| 1140 | j = PyList_GET_SIZE(list); |
| 1141 | } |
| 1142 | else { |
| 1143 | for (j = 0; j < CHUNKSIZE; j++) { |
| 1144 | line = PySequence_GetItem(args, index+j); |
| 1145 | if (line == NULL) { |
| 1146 | if (PyErr_ExceptionMatches( |
Marc-André Lemburg | 6ef68b5 | 2000-08-25 22:39:50 +0000 | [diff] [blame] | 1147 | PyExc_IndexError)) { |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1148 | PyErr_Clear(); |
| 1149 | break; |
| 1150 | } |
| 1151 | /* Some other error occurred. |
| 1152 | XXX We may lose some output. */ |
| 1153 | goto error; |
| 1154 | } |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1155 | PyList_SetItem(list, j, line); |
| 1156 | } |
| 1157 | } |
| 1158 | if (j == 0) |
| 1159 | break; |
| 1160 | |
Marc-André Lemburg | 6ef68b5 | 2000-08-25 22:39:50 +0000 | [diff] [blame] | 1161 | /* Check that all entries are indeed strings. If not, |
| 1162 | apply the same rules as for file.write() and |
| 1163 | convert the results to strings. This is slow, but |
| 1164 | seems to be the only way since all conversion APIs |
| 1165 | could potentially execute Python code. */ |
| 1166 | for (i = 0; i < j; i++) { |
| 1167 | PyObject *v = PyList_GET_ITEM(list, i); |
| 1168 | if (!PyString_Check(v)) { |
| 1169 | const char *buffer; |
| 1170 | int len; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 1171 | if (((f->f_binary && |
Marc-André Lemburg | 6ef68b5 | 2000-08-25 22:39:50 +0000 | [diff] [blame] | 1172 | PyObject_AsReadBuffer(v, |
| 1173 | (const void**)&buffer, |
| 1174 | &len)) || |
| 1175 | PyObject_AsCharBuffer(v, |
| 1176 | &buffer, |
| 1177 | &len))) { |
| 1178 | PyErr_SetString(PyExc_TypeError, |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 1179 | "writelines() argument must be a sequence of strings"); |
Marc-André Lemburg | 6ef68b5 | 2000-08-25 22:39:50 +0000 | [diff] [blame] | 1180 | goto error; |
| 1181 | } |
| 1182 | line = PyString_FromStringAndSize(buffer, |
| 1183 | len); |
| 1184 | if (line == NULL) |
| 1185 | goto error; |
| 1186 | Py_DECREF(v); |
Marc-André Lemburg | f5e96fa | 2000-08-25 22:49:05 +0000 | [diff] [blame] | 1187 | PyList_SET_ITEM(list, i, line); |
Marc-André Lemburg | 6ef68b5 | 2000-08-25 22:39:50 +0000 | [diff] [blame] | 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | /* Since we are releasing the global lock, the |
| 1192 | following code may *not* execute Python code. */ |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1193 | Py_BEGIN_ALLOW_THREADS |
| 1194 | f->f_softspace = 0; |
| 1195 | errno = 0; |
| 1196 | for (i = 0; i < j; i++) { |
Marc-André Lemburg | 6ef68b5 | 2000-08-25 22:39:50 +0000 | [diff] [blame] | 1197 | line = PyList_GET_ITEM(list, i); |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1198 | len = PyString_GET_SIZE(line); |
| 1199 | nwritten = fwrite(PyString_AS_STRING(line), |
| 1200 | 1, len, f->f_fp); |
| 1201 | if (nwritten != len) { |
| 1202 | Py_BLOCK_THREADS |
| 1203 | PyErr_SetFromErrno(PyExc_IOError); |
| 1204 | clearerr(f->f_fp); |
| 1205 | goto error; |
| 1206 | } |
| 1207 | } |
| 1208 | Py_END_ALLOW_THREADS |
| 1209 | |
| 1210 | if (j < CHUNKSIZE) |
| 1211 | break; |
| 1212 | index += CHUNKSIZE; |
| 1213 | } |
| 1214 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1215 | Py_INCREF(Py_None); |
Guido van Rossum | ee70ad1 | 2000-03-13 16:27:06 +0000 | [diff] [blame] | 1216 | result = Py_None; |
| 1217 | error: |
| 1218 | Py_XDECREF(list); |
| 1219 | return result; |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 1220 | } |
| 1221 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1222 | static PyMethodDef file_methods[] = { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 1223 | {"readline", (PyCFunction)file_readline, 1}, |
Guido van Rossum | 74ba247 | 1997-07-13 03:56:50 +0000 | [diff] [blame] | 1224 | {"read", (PyCFunction)file_read, 1}, |
| 1225 | {"write", (PyCFunction)file_write, 0}, |
| 1226 | {"fileno", (PyCFunction)file_fileno, 0}, |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 1227 | {"seek", (PyCFunction)file_seek, 1}, |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 1228 | #ifdef HAVE_FTRUNCATE |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 1229 | {"truncate", (PyCFunction)file_truncate, 1}, |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 1230 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1231 | {"tell", (PyCFunction)file_tell, 0}, |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 1232 | {"readinto", (PyCFunction)file_readinto, 0}, |
Guido van Rossum | 74ba247 | 1997-07-13 03:56:50 +0000 | [diff] [blame] | 1233 | {"readlines", (PyCFunction)file_readlines, 1}, |
| 1234 | {"writelines", (PyCFunction)file_writelines, 0}, |
| 1235 | {"flush", (PyCFunction)file_flush, 0}, |
| 1236 | {"close", (PyCFunction)file_close, 0}, |
| 1237 | {"isatty", (PyCFunction)file_isatty, 0}, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1238 | {NULL, NULL} /* sentinel */ |
| 1239 | }; |
| 1240 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1241 | #define OFF(x) offsetof(PyFileObject, x) |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1242 | |
| 1243 | static struct memberlist file_memberlist[] = { |
| 1244 | {"softspace", T_INT, OFF(f_softspace)}, |
| 1245 | {"mode", T_OBJECT, OFF(f_mode), RO}, |
| 1246 | {"name", T_OBJECT, OFF(f_name), RO}, |
| 1247 | /* getattr(f, "closed") is implemented without this table */ |
| 1248 | {"closed", T_INT, 0, RO}, |
| 1249 | {NULL} /* Sentinel */ |
| 1250 | }; |
| 1251 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1252 | static PyObject * |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1253 | file_getattr(PyFileObject *f, char *name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1254 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1255 | PyObject *res; |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1256 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1257 | res = Py_FindMethod(file_methods, (PyObject *)f, name); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1258 | if (res != NULL) |
| 1259 | return res; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1260 | PyErr_Clear(); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1261 | if (strcmp(name, "closed") == 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1262 | return PyInt_FromLong((long)(f->f_fp == 0)); |
| 1263 | return PyMember_Get((char *)f, file_memberlist, name); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1264 | } |
| 1265 | |
| 1266 | static int |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1267 | file_setattr(PyFileObject *f, char *name, PyObject *v) |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1268 | { |
| 1269 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1270 | PyErr_SetString(PyExc_AttributeError, |
| 1271 | "can't delete file attributes"); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1272 | return -1; |
| 1273 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1274 | return PyMember_Set((char *)f, file_memberlist, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1275 | } |
| 1276 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1277 | PyTypeObject PyFile_Type = { |
| 1278 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1279 | 0, |
| 1280 | "file", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1281 | sizeof(PyFileObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1282 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1283 | (destructor)file_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 7066dd7 | 1992-09-17 17:54:56 +0000 | [diff] [blame] | 1284 | 0, /*tp_print*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1285 | (getattrfunc)file_getattr, /*tp_getattr*/ |
| 1286 | (setattrfunc)file_setattr, /*tp_setattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1287 | 0, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1288 | (reprfunc)file_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1289 | }; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 1290 | |
| 1291 | /* Interface for the 'soft space' between print items. */ |
| 1292 | |
| 1293 | int |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1294 | PyFile_SoftSpace(PyObject *f, int newflag) |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 1295 | { |
| 1296 | int oldflag = 0; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1297 | if (f == NULL) { |
| 1298 | /* Do nothing */ |
| 1299 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1300 | else if (PyFile_Check(f)) { |
| 1301 | oldflag = ((PyFileObject *)f)->f_softspace; |
| 1302 | ((PyFileObject *)f)->f_softspace = newflag; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 1303 | } |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1304 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1305 | PyObject *v; |
| 1306 | v = PyObject_GetAttrString(f, "softspace"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1307 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1308 | PyErr_Clear(); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1309 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1310 | if (PyInt_Check(v)) |
| 1311 | oldflag = PyInt_AsLong(v); |
| 1312 | Py_DECREF(v); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1313 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1314 | v = PyInt_FromLong((long)newflag); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1315 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1316 | PyErr_Clear(); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1317 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1318 | if (PyObject_SetAttrString(f, "softspace", v) != 0) |
| 1319 | PyErr_Clear(); |
| 1320 | Py_DECREF(v); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1321 | } |
| 1322 | } |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 1323 | return oldflag; |
| 1324 | } |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1325 | |
| 1326 | /* Interfaces to write objects/strings to file-like objects */ |
| 1327 | |
| 1328 | int |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1329 | PyFile_WriteObject(PyObject *v, PyObject *f, int flags) |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1330 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1331 | PyObject *writer, *value, *args, *result; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1332 | if (f == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1333 | PyErr_SetString(PyExc_TypeError, "writeobject with NULL file"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1334 | return -1; |
| 1335 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1336 | else if (PyFile_Check(f)) { |
| 1337 | FILE *fp = PyFile_AsFile(f); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1338 | if (fp == NULL) { |
| 1339 | err_closed(); |
| 1340 | return -1; |
| 1341 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1342 | return PyObject_Print(v, fp, flags); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1343 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1344 | writer = PyObject_GetAttrString(f, "write"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1345 | if (writer == NULL) |
| 1346 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1347 | if (flags & Py_PRINT_RAW) |
| 1348 | value = PyObject_Str(v); |
Guido van Rossum | c600411 | 1993-11-05 10:22:19 +0000 | [diff] [blame] | 1349 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1350 | value = PyObject_Repr(v); |
Guido van Rossum | c600411 | 1993-11-05 10:22:19 +0000 | [diff] [blame] | 1351 | if (value == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1352 | Py_DECREF(writer); |
Guido van Rossum | c600411 | 1993-11-05 10:22:19 +0000 | [diff] [blame] | 1353 | return -1; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1354 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1355 | args = Py_BuildValue("(O)", value); |
Guido van Rossum | e9eec54 | 1997-05-22 14:02:25 +0000 | [diff] [blame] | 1356 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1357 | Py_DECREF(value); |
| 1358 | Py_DECREF(writer); |
Guido van Rossum | d3f9a1a | 1995-07-10 23:32:26 +0000 | [diff] [blame] | 1359 | return -1; |
| 1360 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1361 | result = PyEval_CallObject(writer, args); |
| 1362 | Py_DECREF(args); |
| 1363 | Py_DECREF(value); |
| 1364 | Py_DECREF(writer); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1365 | if (result == NULL) |
| 1366 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1367 | Py_DECREF(result); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1368 | return 0; |
| 1369 | } |
| 1370 | |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1371 | int |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1372 | PyFile_WriteString(char *s, PyObject *f) |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1373 | { |
| 1374 | if (f == NULL) { |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1375 | /* Should be caused by a pre-existing error */ |
Fred Drake | fd99de6 | 2000-07-09 05:02:18 +0000 | [diff] [blame] | 1376 | if (!PyErr_Occurred()) |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1377 | PyErr_SetString(PyExc_SystemError, |
| 1378 | "null file for PyFile_WriteString"); |
| 1379 | return -1; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1380 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1381 | else if (PyFile_Check(f)) { |
| 1382 | FILE *fp = PyFile_AsFile(f); |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1383 | if (fp == NULL) { |
| 1384 | err_closed(); |
| 1385 | return -1; |
| 1386 | } |
| 1387 | fputs(s, fp); |
| 1388 | return 0; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1389 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1390 | else if (!PyErr_Occurred()) { |
| 1391 | PyObject *v = PyString_FromString(s); |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1392 | int err; |
| 1393 | if (v == NULL) |
| 1394 | return -1; |
| 1395 | err = PyFile_WriteObject(v, f, Py_PRINT_RAW); |
| 1396 | Py_DECREF(v); |
| 1397 | return err; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1398 | } |
Guido van Rossum | 74ba247 | 1997-07-13 03:56:50 +0000 | [diff] [blame] | 1399 | else |
| 1400 | return -1; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1401 | } |
Andrew M. Kuchling | 06051ed | 2000-07-13 23:56:54 +0000 | [diff] [blame] | 1402 | |
| 1403 | /* Try to get a file-descriptor from a Python object. If the object |
| 1404 | is an integer or long integer, its value is returned. If not, the |
| 1405 | object's fileno() method is called if it exists; the method must return |
| 1406 | an integer or long integer, which is returned as the file descriptor value. |
| 1407 | -1 is returned on failure. |
| 1408 | */ |
| 1409 | |
| 1410 | int PyObject_AsFileDescriptor(PyObject *o) |
| 1411 | { |
| 1412 | int fd; |
| 1413 | PyObject *meth; |
| 1414 | |
| 1415 | if (PyInt_Check(o)) { |
| 1416 | fd = PyInt_AsLong(o); |
| 1417 | } |
| 1418 | else if (PyLong_Check(o)) { |
| 1419 | fd = PyLong_AsLong(o); |
| 1420 | } |
| 1421 | else if ((meth = PyObject_GetAttrString(o, "fileno")) != NULL) |
| 1422 | { |
| 1423 | PyObject *fno = PyEval_CallObject(meth, NULL); |
| 1424 | Py_DECREF(meth); |
| 1425 | if (fno == NULL) |
| 1426 | return -1; |
Tim Peters | 86821b2 | 2001-01-07 21:19:34 +0000 | [diff] [blame^] | 1427 | |
Andrew M. Kuchling | 06051ed | 2000-07-13 23:56:54 +0000 | [diff] [blame] | 1428 | if (PyInt_Check(fno)) { |
| 1429 | fd = PyInt_AsLong(fno); |
| 1430 | Py_DECREF(fno); |
| 1431 | } |
| 1432 | else if (PyLong_Check(fno)) { |
| 1433 | fd = PyLong_AsLong(fno); |
| 1434 | Py_DECREF(fno); |
| 1435 | } |
| 1436 | else { |
| 1437 | PyErr_SetString(PyExc_TypeError, |
| 1438 | "fileno() returned a non-integer"); |
| 1439 | Py_DECREF(fno); |
| 1440 | return -1; |
| 1441 | } |
| 1442 | } |
| 1443 | else { |
| 1444 | PyErr_SetString(PyExc_TypeError, |
| 1445 | "argument must be an int, or have a fileno() method."); |
| 1446 | return -1; |
| 1447 | } |
| 1448 | |
| 1449 | if (fd < 0) { |
| 1450 | PyErr_Format(PyExc_ValueError, |
| 1451 | "file descriptor cannot be a negative integer (%i)", |
| 1452 | fd); |
| 1453 | return -1; |
| 1454 | } |
| 1455 | return fd; |
| 1456 | } |
| 1457 | |
| 1458 | |
| 1459 | |