Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 6610ad9 | 1995-01-04 19:07:38 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 32 | /* File object implementation */ |
| 33 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 34 | #include "Python.h" |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 35 | #include "structmember.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 36 | |
Guido van Rossum | 685a38e | 1996-12-05 21:54:17 +0000 | [diff] [blame] | 37 | #ifdef HAVE_UNISTD_H |
| 38 | #include <unistd.h> |
| 39 | #endif |
| 40 | |
Guido van Rossum | b819914 | 1997-05-06 15:23:24 +0000 | [diff] [blame] | 41 | #ifdef MS_WIN32 |
| 42 | #define ftruncate _chsize |
| 43 | #define fileno _fileno |
| 44 | #define HAVE_FTRUNCATE |
| 45 | #endif |
| 46 | |
Guido van Rossum | f2044e1 | 1998-04-28 16:05:59 +0000 | [diff] [blame] | 47 | #ifdef macintosh |
| 48 | #ifdef USE_GUSI |
| 49 | #define HAVE_FTRUNCATE |
| 50 | #endif |
| 51 | #endif |
| 52 | |
Guido van Rossum | 295d171 | 1995-02-19 15:55:19 +0000 | [diff] [blame] | 53 | #ifdef THINK_C |
| 54 | #define HAVE_FOPENRF |
| 55 | #endif |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 56 | #ifdef __MWERKS__ |
| 57 | /* Mwerks fopen() doesn't always set errno */ |
| 58 | #define NO_FOPEN_ERRNO |
| 59 | #endif |
Guido van Rossum | 295d171 | 1995-02-19 15:55:19 +0000 | [diff] [blame] | 60 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 61 | #define BUF(v) PyString_AS_STRING((PyStringObject *)v) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 62 | |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 63 | #include <errno.h> |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 64 | |
| 65 | typedef struct { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 66 | PyObject_HEAD |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 67 | FILE *f_fp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 68 | PyObject *f_name; |
| 69 | PyObject *f_mode; |
| 70 | int (*f_close) Py_PROTO((FILE *)); |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 71 | int f_softspace; /* Flag used by 'print' command */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 72 | } PyFileObject; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 73 | |
| 74 | FILE * |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 75 | PyFile_AsFile(f) |
| 76 | PyObject *f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 77 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 78 | if (f == NULL || !PyFile_Check(f)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 79 | return NULL; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 80 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 81 | return ((PyFileObject *)f)->f_fp; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 82 | } |
| 83 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 84 | PyObject * |
| 85 | PyFile_Name(f) |
| 86 | PyObject *f; |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 87 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 88 | if (f == NULL || !PyFile_Check(f)) |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 89 | return NULL; |
| 90 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 91 | return ((PyFileObject *)f)->f_name; |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 92 | } |
| 93 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 94 | PyObject * |
| 95 | PyFile_FromFile(fp, name, mode, close) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 96 | FILE *fp; |
| 97 | char *name; |
| 98 | char *mode; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 99 | int (*close) Py_FPROTO((FILE *)); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 100 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 101 | PyFileObject *f = PyObject_NEW(PyFileObject, &PyFile_Type); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 102 | if (f == NULL) |
| 103 | return NULL; |
| 104 | f->f_fp = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 105 | f->f_name = PyString_FromString(name); |
| 106 | f->f_mode = PyString_FromString(mode); |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 107 | f->f_close = close; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 108 | f->f_softspace = 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 109 | if (f->f_name == NULL || f->f_mode == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 110 | Py_DECREF(f); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 111 | return NULL; |
| 112 | } |
| 113 | f->f_fp = fp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 114 | return (PyObject *) f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 115 | } |
| 116 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 117 | PyObject * |
| 118 | PyFile_FromString(name, mode) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 119 | char *name, *mode; |
| 120 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 121 | extern int fclose Py_PROTO((FILE *)); |
| 122 | PyFileObject *f; |
| 123 | f = (PyFileObject *) PyFile_FromFile((FILE *)NULL, name, mode, fclose); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 124 | if (f == NULL) |
| 125 | return NULL; |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 126 | #ifdef HAVE_FOPENRF |
Guido van Rossum | a08095a | 1991-02-13 23:25:27 +0000 | [diff] [blame] | 127 | if (*mode == '*') { |
| 128 | FILE *fopenRF(); |
| 129 | f->f_fp = fopenRF(name, mode+1); |
| 130 | } |
| 131 | else |
| 132 | #endif |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 133 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 134 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 135 | f->f_fp = fopen(name, mode); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 136 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 137 | } |
Guido van Rossum | a08095a | 1991-02-13 23:25:27 +0000 | [diff] [blame] | 138 | if (f->f_fp == NULL) { |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 139 | #ifdef NO_FOPEN_ERRNO |
Barry Warsaw | 52ddc0e | 1998-07-23 16:07:02 +0000 | [diff] [blame] | 140 | /* Metroworks only, not testable, so unchanged */ |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 141 | if ( errno == 0 ) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 142 | PyErr_SetString(PyExc_IOError, "Cannot open file"); |
| 143 | Py_DECREF(f); |
Jack Jansen | e08dea19 | 1995-04-23 22:12:47 +0000 | [diff] [blame] | 144 | return NULL; |
| 145 | } |
| 146 | #endif |
Barry Warsaw | 52ddc0e | 1998-07-23 16:07:02 +0000 | [diff] [blame] | 147 | PyErr_SetFromErrnoWithFilename(PyExc_IOError, name); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 148 | Py_DECREF(f); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 149 | return NULL; |
| 150 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 151 | return (PyObject *)f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 152 | } |
| 153 | |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 154 | void |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 155 | PyFile_SetBufSize(f, bufsize) |
| 156 | PyObject *f; |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 157 | int bufsize; |
| 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 * |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 183 | err_closed() |
| 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 |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 192 | file_dealloc(f) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 193 | PyFileObject *f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 194 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 195 | if (f->f_fp != NULL && f->f_close != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 196 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 197 | (*f->f_close)(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 198 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 199 | } |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 200 | if (f->f_name != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 201 | Py_DECREF(f->f_name); |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 202 | } |
| 203 | if (f->f_mode != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 204 | Py_DECREF(f->f_mode); |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 205 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 206 | free((char *)f); |
| 207 | } |
| 208 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 209 | static PyObject * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 210 | file_repr(f) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 211 | PyFileObject *f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 212 | { |
| 213 | char buf[300]; |
Guido van Rossum | e35399e | 1993-01-10 18:33:56 +0000 | [diff] [blame] | 214 | sprintf(buf, "<%s file '%.256s', mode '%.10s' at %lx>", |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 215 | f->f_fp == NULL ? "closed" : "open", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 216 | PyString_AsString(f->f_name), |
| 217 | PyString_AsString(f->f_mode), |
Guido van Rossum | e35399e | 1993-01-10 18:33:56 +0000 | [diff] [blame] | 218 | (long)f); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 219 | return PyString_FromString(buf); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 220 | } |
| 221 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 222 | static PyObject * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 223 | file_close(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 224 | PyFileObject *f; |
| 225 | PyObject *args; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 226 | { |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 227 | int sts = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 228 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 229 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 230 | if (f->f_fp != NULL) { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 231 | if (f->f_close != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 232 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 233 | errno = 0; |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 234 | sts = (*f->f_close)(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 235 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 236 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 237 | f->f_fp = NULL; |
| 238 | } |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 239 | if (sts == EOF) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 240 | return PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 241 | if (sts != 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 242 | return PyInt_FromLong((long)sts); |
| 243 | Py_INCREF(Py_None); |
| 244 | return Py_None; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 247 | static PyObject * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 248 | file_seek(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 249 | PyFileObject *f; |
| 250 | PyObject *args; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 251 | { |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 252 | int whence; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 253 | int ret; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 254 | off_t offset; |
| 255 | PyObject *offobj; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 256 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 257 | if (f->f_fp == NULL) |
| 258 | return err_closed(); |
| 259 | whence = 0; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 260 | if (!PyArg_ParseTuple(args, "O|i", &offobj, &whence)) |
| 261 | return NULL; |
| 262 | #if !defined(HAVE_LARGEFILE_SUPPORT) |
| 263 | offset = PyInt_AsLong(offobj); |
| 264 | #else |
| 265 | offset = PyLong_Check(offobj) ? |
| 266 | PyLong_AsLongLong(offobj) : PyInt_AsLong(offobj); |
| 267 | #endif |
| 268 | if (PyErr_Occurred()) |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 269 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 270 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 271 | errno = 0; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 272 | #if defined(HAVE_FSEEKO) |
| 273 | ret = fseeko(f->f_fp, offset, whence); |
| 274 | #elif defined(HAVE_FSEEK64) |
| 275 | ret = fseek64(f->f_fp, offset, whence); |
| 276 | #else |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 277 | ret = fseek(f->f_fp, offset, whence); |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 278 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 279 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 280 | if (ret != 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 281 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 282 | clearerr(f->f_fp); |
| 283 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 284 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 285 | Py_INCREF(Py_None); |
| 286 | return Py_None; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 287 | } |
| 288 | |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 289 | #ifdef HAVE_FTRUNCATE |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 290 | static PyObject * |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 291 | file_truncate(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 292 | PyFileObject *f; |
| 293 | PyObject *args; |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 294 | { |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 295 | int ret; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 296 | off_t newsize; |
| 297 | PyObject *newsizeobj; |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 298 | |
| 299 | if (f->f_fp == NULL) |
| 300 | return err_closed(); |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 301 | newsizeobj = NULL; |
| 302 | if (!PyArg_ParseTuple(args, "|O", &newsizeobj)) |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 303 | return NULL; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 304 | if (newsizeobj != NULL) { |
| 305 | #if !defined(HAVE_LARGEFILE_SUPPORT) |
| 306 | newsize = PyInt_AsLong(newsizeobj); |
| 307 | #else |
| 308 | newsize = PyLong_Check(newsizeobj) ? |
| 309 | PyLong_AsLongLong(newsizeobj) : |
| 310 | PyInt_AsLong(newsizeobj); |
| 311 | #endif |
| 312 | if (PyErr_Occurred()) |
| 313 | return NULL; |
| 314 | } else { |
| 315 | /* Default to current position*/ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 316 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 317 | errno = 0; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 318 | #if defined(HAVE_FTELLO) && defined(HAVE_LARGEFILE_SUPPORT) |
| 319 | newsize = ftello(f->f_fp); |
| 320 | #elif defined(HAVE_FTELL64) && defined(HAVE_LARGEFILE_SUPPORT) |
| 321 | newsize = ftell64(f->f_fp); |
| 322 | #else |
| 323 | newsize = ftell(f->f_fp); |
| 324 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 325 | Py_END_ALLOW_THREADS |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 326 | if (newsize == -1) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 327 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 328 | clearerr(f->f_fp); |
| 329 | return NULL; |
| 330 | } |
| 331 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 332 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 333 | errno = 0; |
| 334 | ret = fflush(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 335 | Py_END_ALLOW_THREADS |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 336 | if (ret == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 337 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 338 | errno = 0; |
| 339 | ret = ftruncate(fileno(f->f_fp), newsize); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 340 | Py_END_ALLOW_THREADS |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 341 | } |
| 342 | if (ret != 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 343 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 344 | clearerr(f->f_fp); |
| 345 | return NULL; |
| 346 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 347 | Py_INCREF(Py_None); |
| 348 | return Py_None; |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 349 | } |
| 350 | #endif /* HAVE_FTRUNCATE */ |
| 351 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 352 | static PyObject * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 353 | file_tell(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 354 | PyFileObject *f; |
| 355 | PyObject *args; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 356 | { |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 357 | off_t offset; |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 358 | if (f->f_fp == NULL) |
| 359 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 360 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 361 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 362 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 363 | errno = 0; |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 364 | #if defined(HAVE_FTELLO) && defined(HAVE_LARGEFILE_SUPPORT) |
| 365 | offset = ftello(f->f_fp); |
| 366 | #elif defined(HAVE_FTELL64) && defined(HAVE_LARGEFILE_SUPPORT) |
| 367 | offset = ftell64(f->f_fp); |
| 368 | #else |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 369 | offset = ftell(f->f_fp); |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 370 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 371 | Py_END_ALLOW_THREADS |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 372 | if (offset == -1) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 373 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 374 | clearerr(f->f_fp); |
| 375 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 376 | } |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 377 | #if !defined(HAVE_LARGEFILE_SUPPORT) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 378 | return PyInt_FromLong(offset); |
Guido van Rossum | 3c9fe0c | 1999-01-06 18:51:17 +0000 | [diff] [blame] | 379 | #else |
| 380 | return PyLong_FromLongLong(offset); |
| 381 | #endif |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 382 | } |
| 383 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 384 | static PyObject * |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 385 | file_fileno(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 386 | PyFileObject *f; |
| 387 | PyObject *args; |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 388 | { |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 389 | if (f->f_fp == NULL) |
| 390 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 391 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 392 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 393 | return PyInt_FromLong((long) fileno(f->f_fp)); |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 394 | } |
| 395 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 396 | static PyObject * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 397 | file_flush(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 398 | PyFileObject *f; |
| 399 | PyObject *args; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 400 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 401 | int res; |
| 402 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 403 | if (f->f_fp == NULL) |
| 404 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 405 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 406 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 407 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 408 | errno = 0; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 409 | res = fflush(f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 410 | Py_END_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 411 | if (res != 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 412 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 413 | clearerr(f->f_fp); |
| 414 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 415 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 416 | Py_INCREF(Py_None); |
| 417 | return Py_None; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 418 | } |
| 419 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 420 | static PyObject * |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 421 | file_isatty(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 422 | PyFileObject *f; |
| 423 | PyObject *args; |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 424 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 425 | long res; |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 426 | if (f->f_fp == NULL) |
| 427 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 428 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 429 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 430 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 431 | res = isatty((int)fileno(f->f_fp)); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 432 | Py_END_ALLOW_THREADS |
| 433 | return PyInt_FromLong(res); |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame] | 434 | } |
| 435 | |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 436 | /* We expect that fstat exists on most systems. |
| 437 | It's confirmed on Unix, Mac and Windows. |
| 438 | If you don't have it, add #define DONT_HAVE_FSTAT to your config.h. */ |
| 439 | #ifndef DONT_HAVE_FSTAT |
| 440 | #define HAVE_FSTAT |
| 441 | |
| 442 | #include <sys/types.h> |
| 443 | #include <sys/stat.h> |
| 444 | |
| 445 | #endif |
| 446 | |
| 447 | #if BUFSIZ < 8192 |
| 448 | #define SMALLCHUNK 8192 |
| 449 | #else |
| 450 | #define SMALLCHUNK BUFSIZ |
| 451 | #endif |
| 452 | |
| 453 | #define BIGCHUNK (512*1024) |
| 454 | |
| 455 | static size_t |
| 456 | new_buffersize(f, currentsize) |
| 457 | PyFileObject *f; |
| 458 | size_t currentsize; |
| 459 | { |
| 460 | #ifdef HAVE_FSTAT |
| 461 | long pos, end; |
| 462 | struct stat st; |
| 463 | if (fstat(fileno(f->f_fp), &st) == 0) { |
| 464 | end = st.st_size; |
Guido van Rossum | cada293 | 1998-12-11 20:44:56 +0000 | [diff] [blame] | 465 | /* The following is not a bug: we really need to call lseek() |
| 466 | *and* ftell(). The reason is that some stdio libraries |
| 467 | mistakenly flush their buffer when ftell() is called and |
| 468 | the lseek() call it makes fails, thereby throwing away |
| 469 | data that cannot be recovered in any way. To avoid this, |
| 470 | we first test lseek(), and only call ftell() if lseek() |
| 471 | works. We can't use the lseek() value either, because we |
| 472 | need to take the amount of buffered data into account. |
| 473 | (Yet another reason why stdio stinks. :-) */ |
Guido van Rossum | 91aaa92 | 1998-05-05 22:21:35 +0000 | [diff] [blame] | 474 | pos = lseek(fileno(f->f_fp), 0L, SEEK_CUR); |
| 475 | if (pos >= 0) |
| 476 | pos = ftell(f->f_fp); |
Guido van Rossum | d30dc0a | 1998-04-27 19:01:08 +0000 | [diff] [blame] | 477 | if (pos < 0) |
| 478 | clearerr(f->f_fp); |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 479 | if (end > pos && pos >= 0) |
Guido van Rossum | cada293 | 1998-12-11 20:44:56 +0000 | [diff] [blame] | 480 | return currentsize + end - pos + 1; |
Guido van Rossum | dcb5e7f | 1998-03-03 22:36:10 +0000 | [diff] [blame] | 481 | /* 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] | 482 | } |
| 483 | #endif |
| 484 | if (currentsize > SMALLCHUNK) { |
| 485 | /* Keep doubling until we reach BIGCHUNK; |
| 486 | then keep adding BIGCHUNK. */ |
| 487 | if (currentsize <= BIGCHUNK) |
| 488 | return currentsize + currentsize; |
| 489 | else |
| 490 | return currentsize + BIGCHUNK; |
| 491 | } |
| 492 | return currentsize + SMALLCHUNK; |
| 493 | } |
| 494 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 495 | static PyObject * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 496 | file_read(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 497 | PyFileObject *f; |
| 498 | PyObject *args; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 499 | { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 500 | long bytesrequested = -1; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 501 | size_t bytesread, buffersize, chunksize; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 502 | PyObject *v; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 503 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 504 | if (f->f_fp == NULL) |
| 505 | return err_closed(); |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 506 | if (!PyArg_ParseTuple(args, "|l", &bytesrequested)) |
| 507 | return NULL; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 508 | if (bytesrequested < 0) |
| 509 | buffersize = new_buffersize(f, 0); |
| 510 | else |
| 511 | buffersize = bytesrequested; |
| 512 | v = PyString_FromStringAndSize((char *)NULL, buffersize); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 513 | if (v == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 514 | return NULL; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 515 | bytesread = 0; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 516 | for (;;) { |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 517 | Py_BEGIN_ALLOW_THREADS |
| 518 | errno = 0; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 519 | chunksize = fread(BUF(v) + bytesread, 1, |
| 520 | buffersize - bytesread, f->f_fp); |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 521 | Py_END_ALLOW_THREADS |
| 522 | if (chunksize == 0) { |
| 523 | if (!ferror(f->f_fp)) |
| 524 | break; |
| 525 | PyErr_SetFromErrno(PyExc_IOError); |
| 526 | clearerr(f->f_fp); |
| 527 | Py_DECREF(v); |
| 528 | return NULL; |
| 529 | } |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 530 | bytesread += chunksize; |
| 531 | if (bytesread < buffersize) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 532 | break; |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 533 | if (bytesrequested < 0) { |
Guido van Rossum | cada293 | 1998-12-11 20:44:56 +0000 | [diff] [blame] | 534 | buffersize = new_buffersize(f, buffersize); |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 535 | if (_PyString_Resize(&v, buffersize) < 0) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 536 | return NULL; |
| 537 | } |
| 538 | } |
Guido van Rossum | 5449b6e | 1997-05-09 22:27:31 +0000 | [diff] [blame] | 539 | if (bytesread != buffersize) |
| 540 | _PyString_Resize(&v, bytesread); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 541 | return v; |
| 542 | } |
| 543 | |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 544 | static PyObject * |
| 545 | file_readinto(f, args) |
| 546 | PyFileObject *f; |
| 547 | PyObject *args; |
| 548 | { |
| 549 | char *ptr; |
| 550 | int ntodo, ndone, nnow; |
| 551 | |
| 552 | if (f->f_fp == NULL) |
| 553 | return err_closed(); |
| 554 | if (!PyArg_Parse(args, "w#", &ptr, &ntodo)) |
| 555 | return NULL; |
| 556 | ndone = 0; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 557 | while (ntodo > 0) { |
| 558 | Py_BEGIN_ALLOW_THREADS |
| 559 | errno = 0; |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 560 | nnow = fread(ptr+ndone, 1, ntodo, f->f_fp); |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 561 | Py_END_ALLOW_THREADS |
| 562 | if (nnow == 0) { |
| 563 | if (!ferror(f->f_fp)) |
| 564 | break; |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 565 | PyErr_SetFromErrno(PyExc_IOError); |
| 566 | clearerr(f->f_fp); |
| 567 | return NULL; |
| 568 | } |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 569 | ndone += nnow; |
| 570 | ntodo -= nnow; |
| 571 | } |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 572 | return PyInt_FromLong(ndone); |
| 573 | } |
| 574 | |
| 575 | |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 576 | /* Internal routine to get a line. |
| 577 | Size argument interpretation: |
| 578 | > 0: max length; |
| 579 | = 0: read arbitrary line; |
| 580 | < 0: strip trailing '\n', raise EOFError if EOF reached immediately |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 581 | */ |
| 582 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 583 | static PyObject * |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 584 | getline(f, n) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 585 | PyFileObject *f; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 586 | int n; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 587 | { |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 588 | register FILE *fp; |
| 589 | register int c; |
| 590 | register char *buf, *end; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 591 | int n1, n2; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 592 | PyObject *v; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 593 | |
Guido van Rossum | c10aa77 | 1992-07-31 12:42:38 +0000 | [diff] [blame] | 594 | fp = f->f_fp; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 595 | n2 = n > 0 ? n : 100; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 596 | v = PyString_FromStringAndSize((char *)NULL, n2); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 597 | if (v == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 598 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 599 | buf = BUF(v); |
| 600 | end = buf + n2; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 601 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 602 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 603 | for (;;) { |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 604 | if ((c = getc(fp)) == EOF) { |
Guido van Rossum | 76ad8ed | 1991-06-03 10:54:55 +0000 | [diff] [blame] | 605 | clearerr(fp); |
Guido van Rossum | f518154 | 1997-11-07 19:20:34 +0000 | [diff] [blame] | 606 | Py_BLOCK_THREADS |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 607 | if (PyErr_CheckSignals()) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 608 | Py_DECREF(v); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 609 | return NULL; |
| 610 | } |
| 611 | if (n < 0 && buf == BUF(v)) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 612 | Py_DECREF(v); |
| 613 | PyErr_SetString(PyExc_EOFError, |
Guido van Rossum | 201be05 | 1991-12-24 13:26:41 +0000 | [diff] [blame] | 614 | "EOF when reading a line"); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 615 | return NULL; |
| 616 | } |
Guido van Rossum | f518154 | 1997-11-07 19:20:34 +0000 | [diff] [blame] | 617 | Py_UNBLOCK_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 618 | break; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 619 | } |
| 620 | if ((*buf++ = c) == '\n') { |
| 621 | if (n < 0) |
| 622 | buf--; |
| 623 | break; |
| 624 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 625 | if (buf == end) { |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 626 | if (n > 0) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 627 | break; |
| 628 | n1 = n2; |
| 629 | n2 += 1000; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 630 | Py_BLOCK_THREADS |
| 631 | if (_PyString_Resize(&v, n2) < 0) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 632 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 633 | Py_UNBLOCK_THREADS |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 634 | buf = BUF(v) + n1; |
| 635 | end = BUF(v) + n2; |
| 636 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 637 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 638 | Py_END_ALLOW_THREADS |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 639 | |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 640 | n1 = buf - BUF(v); |
| 641 | if (n1 != n2) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 642 | _PyString_Resize(&v, n1); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 643 | return v; |
| 644 | } |
| 645 | |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 646 | /* External C interface */ |
| 647 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 648 | PyObject * |
| 649 | PyFile_GetLine(f, n) |
| 650 | PyObject *f; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 651 | int n; |
| 652 | { |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 653 | if (f == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 654 | PyErr_BadInternalCall(); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 655 | return NULL; |
| 656 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 657 | if (!PyFile_Check(f)) { |
| 658 | PyObject *reader; |
| 659 | PyObject *args; |
| 660 | PyObject *result; |
| 661 | reader = PyObject_GetAttrString(f, "readline"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 662 | if (reader == NULL) |
| 663 | return NULL; |
| 664 | if (n <= 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 665 | args = Py_BuildValue("()"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 666 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 667 | args = Py_BuildValue("(i)", n); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 668 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 669 | Py_DECREF(reader); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 670 | return NULL; |
| 671 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 672 | result = PyEval_CallObject(reader, args); |
| 673 | Py_DECREF(reader); |
| 674 | Py_DECREF(args); |
| 675 | if (result != NULL && !PyString_Check(result)) { |
| 676 | Py_DECREF(result); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 677 | result = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 678 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 679 | "object.readline() returned non-string"); |
| 680 | } |
| 681 | if (n < 0 && result != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 682 | char *s = PyString_AsString(result); |
| 683 | int len = PyString_Size(result); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 684 | if (len == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 685 | Py_DECREF(result); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 686 | result = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 687 | PyErr_SetString(PyExc_EOFError, |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 688 | "EOF when reading a line"); |
| 689 | } |
| 690 | else if (s[len-1] == '\n') { |
| 691 | if (result->ob_refcnt == 1) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 692 | _PyString_Resize(&result, len-1); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 693 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 694 | PyObject *v; |
| 695 | v = PyString_FromStringAndSize(s, |
| 696 | len-1); |
| 697 | Py_DECREF(result); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 698 | result = v; |
| 699 | } |
| 700 | } |
| 701 | } |
| 702 | return result; |
| 703 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 704 | if (((PyFileObject*)f)->f_fp == NULL) |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 705 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 706 | return getline((PyFileObject *)f, n); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 707 | } |
| 708 | |
| 709 | /* Python method */ |
| 710 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 711 | static PyObject * |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 712 | file_readline(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 713 | PyFileObject *f; |
| 714 | PyObject *args; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 715 | { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 716 | int n = -1; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 717 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 718 | if (f->f_fp == NULL) |
| 719 | return err_closed(); |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 720 | if (!PyArg_ParseTuple(args, "|i", &n)) |
| 721 | return NULL; |
| 722 | if (n == 0) |
| 723 | return PyString_FromString(""); |
| 724 | if (n < 0) |
| 725 | n = 0; |
Guido van Rossum | 51415a7 | 1992-03-27 17:23:38 +0000 | [diff] [blame] | 726 | return getline(f, n); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 727 | } |
| 728 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 729 | static PyObject * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 730 | file_readlines(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 731 | PyFileObject *f; |
| 732 | PyObject *args; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 733 | { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 734 | long sizehint = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 735 | PyObject *list; |
| 736 | PyObject *line; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 737 | char small_buffer[SMALLCHUNK]; |
| 738 | char *buffer = small_buffer; |
| 739 | size_t buffersize = SMALLCHUNK; |
| 740 | PyObject *big_buffer = NULL; |
| 741 | size_t nfilled = 0; |
| 742 | size_t nread; |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 743 | size_t totalread = 0; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 744 | char *p, *q, *end; |
| 745 | int err; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 746 | |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 747 | if (f->f_fp == NULL) |
| 748 | return err_closed(); |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 749 | if (!PyArg_ParseTuple(args, "|l", &sizehint)) |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 750 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 751 | if ((list = PyList_New(0)) == NULL) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 752 | return NULL; |
| 753 | for (;;) { |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 754 | Py_BEGIN_ALLOW_THREADS |
| 755 | errno = 0; |
| 756 | nread = fread(buffer+nfilled, 1, buffersize-nfilled, f->f_fp); |
| 757 | Py_END_ALLOW_THREADS |
| 758 | if (nread == 0) { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 759 | sizehint = 0; |
Guido van Rossum | 3da3fce | 1998-02-19 20:46:48 +0000 | [diff] [blame] | 760 | if (!ferror(f->f_fp)) |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 761 | break; |
| 762 | PyErr_SetFromErrno(PyExc_IOError); |
| 763 | clearerr(f->f_fp); |
| 764 | error: |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 765 | Py_DECREF(list); |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 766 | list = NULL; |
| 767 | goto cleanup; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 768 | } |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 769 | totalread += nread; |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 770 | p = memchr(buffer+nfilled, '\n', nread); |
| 771 | if (p == NULL) { |
| 772 | /* Need a larger buffer to fit this line */ |
| 773 | nfilled += nread; |
| 774 | buffersize *= 2; |
| 775 | if (big_buffer == NULL) { |
| 776 | /* Create the big buffer */ |
| 777 | big_buffer = PyString_FromStringAndSize( |
| 778 | NULL, buffersize); |
| 779 | if (big_buffer == NULL) |
| 780 | goto error; |
| 781 | buffer = PyString_AS_STRING(big_buffer); |
| 782 | memcpy(buffer, small_buffer, nfilled); |
| 783 | } |
| 784 | else { |
| 785 | /* Grow the big buffer */ |
| 786 | _PyString_Resize(&big_buffer, buffersize); |
| 787 | buffer = PyString_AS_STRING(big_buffer); |
| 788 | } |
| 789 | continue; |
| 790 | } |
| 791 | end = buffer+nfilled+nread; |
| 792 | q = buffer; |
| 793 | do { |
| 794 | /* Process complete lines */ |
| 795 | p++; |
| 796 | line = PyString_FromStringAndSize(q, p-q); |
| 797 | if (line == NULL) |
| 798 | goto error; |
| 799 | err = PyList_Append(list, line); |
| 800 | Py_DECREF(line); |
| 801 | if (err != 0) |
| 802 | goto error; |
| 803 | q = p; |
| 804 | p = memchr(q, '\n', end-q); |
| 805 | } while (p != NULL); |
| 806 | /* Move the remaining incomplete line to the start */ |
| 807 | nfilled = end-q; |
| 808 | memmove(buffer, q, nfilled); |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 809 | if (sizehint > 0) |
| 810 | if (totalread >= (size_t)sizehint) |
| 811 | break; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 812 | } |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 813 | if (nfilled != 0) { |
| 814 | /* Partial last line */ |
| 815 | line = PyString_FromStringAndSize(buffer, nfilled); |
| 816 | if (line == NULL) |
| 817 | goto error; |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 818 | if (sizehint > 0) { |
| 819 | /* Need to complete the last line */ |
| 820 | PyObject *rest = getline(f, 0); |
| 821 | if (rest == NULL) { |
| 822 | Py_DECREF(line); |
| 823 | goto error; |
| 824 | } |
| 825 | PyString_Concat(&line, rest); |
| 826 | Py_DECREF(rest); |
| 827 | if (line == NULL) |
| 828 | goto error; |
| 829 | } |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 830 | err = PyList_Append(list, line); |
| 831 | Py_DECREF(line); |
| 832 | if (err != 0) |
| 833 | goto error; |
| 834 | } |
| 835 | cleanup: |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 836 | if (big_buffer) { |
Guido van Rossum | 6263d54 | 1997-05-10 22:07:25 +0000 | [diff] [blame] | 837 | Py_DECREF(big_buffer); |
Guido van Rossum | 1109fbc | 1998-04-10 22:16:39 +0000 | [diff] [blame] | 838 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 839 | return list; |
| 840 | } |
| 841 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 842 | static PyObject * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 843 | file_write(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 844 | PyFileObject *f; |
| 845 | PyObject *args; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 846 | { |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 847 | char *s; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 848 | int n, n2; |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 849 | if (f->f_fp == NULL) |
| 850 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 851 | if (!PyArg_Parse(args, "s#", &s, &n)) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 852 | return NULL; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 853 | f->f_softspace = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 854 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 855 | errno = 0; |
Guido van Rossum | d7297e6 | 1992-07-06 14:19:26 +0000 | [diff] [blame] | 856 | n2 = fwrite(s, 1, n, f->f_fp); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 857 | Py_END_ALLOW_THREADS |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 858 | if (n2 != n) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 859 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | febd551 | 1992-03-04 16:39:24 +0000 | [diff] [blame] | 860 | clearerr(f->f_fp); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 861 | return NULL; |
| 862 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 863 | Py_INCREF(Py_None); |
| 864 | return Py_None; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 865 | } |
| 866 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 867 | static PyObject * |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 868 | file_writelines(f, args) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 869 | PyFileObject *f; |
| 870 | PyObject *args; |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 871 | { |
| 872 | int i, n; |
| 873 | if (f->f_fp == NULL) |
| 874 | return err_closed(); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 875 | if (args == NULL || !PyList_Check(args)) { |
| 876 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 877 | "writelines() requires list of strings"); |
| 878 | return NULL; |
| 879 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 880 | n = PyList_Size(args); |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 881 | f->f_softspace = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 882 | Py_BEGIN_ALLOW_THREADS |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 883 | errno = 0; |
| 884 | for (i = 0; i < n; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 885 | PyObject *line = PyList_GetItem(args, i); |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 886 | int len; |
| 887 | int nwritten; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 888 | if (!PyString_Check(line)) { |
| 889 | Py_BLOCK_THREADS |
| 890 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 891 | "writelines() requires list of strings"); |
| 892 | return NULL; |
| 893 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 894 | len = PyString_Size(line); |
| 895 | nwritten = fwrite(PyString_AsString(line), 1, len, f->f_fp); |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 896 | if (nwritten != len) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 897 | Py_BLOCK_THREADS |
| 898 | PyErr_SetFromErrno(PyExc_IOError); |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 899 | clearerr(f->f_fp); |
| 900 | return NULL; |
| 901 | } |
| 902 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 903 | Py_END_ALLOW_THREADS |
| 904 | Py_INCREF(Py_None); |
| 905 | return Py_None; |
Guido van Rossum | 5a2a683 | 1993-10-25 09:59:04 +0000 | [diff] [blame] | 906 | } |
| 907 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 908 | static PyMethodDef file_methods[] = { |
Guido van Rossum | 789a161 | 1997-05-10 22:33:55 +0000 | [diff] [blame] | 909 | {"readline", (PyCFunction)file_readline, 1}, |
Guido van Rossum | 74ba247 | 1997-07-13 03:56:50 +0000 | [diff] [blame] | 910 | {"read", (PyCFunction)file_read, 1}, |
| 911 | {"write", (PyCFunction)file_write, 0}, |
| 912 | {"fileno", (PyCFunction)file_fileno, 0}, |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 913 | {"seek", (PyCFunction)file_seek, 1}, |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 914 | #ifdef HAVE_FTRUNCATE |
Guido van Rossum | 8830319 | 1999-01-04 17:22:18 +0000 | [diff] [blame] | 915 | {"truncate", (PyCFunction)file_truncate, 1}, |
Guido van Rossum | d7047b3 | 1995-01-02 19:07:15 +0000 | [diff] [blame] | 916 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 917 | {"tell", (PyCFunction)file_tell, 0}, |
Guido van Rossum | fdf95dd | 1997-05-05 22:15:02 +0000 | [diff] [blame] | 918 | {"readinto", (PyCFunction)file_readinto, 0}, |
Guido van Rossum | 74ba247 | 1997-07-13 03:56:50 +0000 | [diff] [blame] | 919 | {"readlines", (PyCFunction)file_readlines, 1}, |
| 920 | {"writelines", (PyCFunction)file_writelines, 0}, |
| 921 | {"flush", (PyCFunction)file_flush, 0}, |
| 922 | {"close", (PyCFunction)file_close, 0}, |
| 923 | {"isatty", (PyCFunction)file_isatty, 0}, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 924 | {NULL, NULL} /* sentinel */ |
| 925 | }; |
| 926 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 927 | #define OFF(x) offsetof(PyFileObject, x) |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 928 | |
| 929 | static struct memberlist file_memberlist[] = { |
| 930 | {"softspace", T_INT, OFF(f_softspace)}, |
| 931 | {"mode", T_OBJECT, OFF(f_mode), RO}, |
| 932 | {"name", T_OBJECT, OFF(f_name), RO}, |
| 933 | /* getattr(f, "closed") is implemented without this table */ |
| 934 | {"closed", T_INT, 0, RO}, |
| 935 | {NULL} /* Sentinel */ |
| 936 | }; |
| 937 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 938 | static PyObject * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 939 | file_getattr(f, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 940 | PyFileObject *f; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 941 | char *name; |
| 942 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 943 | PyObject *res; |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 944 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 945 | res = Py_FindMethod(file_methods, (PyObject *)f, name); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 946 | if (res != NULL) |
| 947 | return res; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 948 | PyErr_Clear(); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 949 | if (strcmp(name, "closed") == 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 950 | return PyInt_FromLong((long)(f->f_fp == 0)); |
| 951 | return PyMember_Get((char *)f, file_memberlist, name); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 952 | } |
| 953 | |
| 954 | static int |
| 955 | file_setattr(f, name, v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 956 | PyFileObject *f; |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 957 | char *name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 958 | PyObject *v; |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 959 | { |
| 960 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 961 | PyErr_SetString(PyExc_AttributeError, |
| 962 | "can't delete file attributes"); |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 963 | return -1; |
| 964 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 965 | return PyMember_Set((char *)f, file_memberlist, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 966 | } |
| 967 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 968 | PyTypeObject PyFile_Type = { |
| 969 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 970 | 0, |
| 971 | "file", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 972 | sizeof(PyFileObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 973 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 974 | (destructor)file_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 7066dd7 | 1992-09-17 17:54:56 +0000 | [diff] [blame] | 975 | 0, /*tp_print*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 976 | (getattrfunc)file_getattr, /*tp_getattr*/ |
| 977 | (setattrfunc)file_setattr, /*tp_setattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 978 | 0, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 979 | (reprfunc)file_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 980 | }; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 981 | |
| 982 | /* Interface for the 'soft space' between print items. */ |
| 983 | |
| 984 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 985 | PyFile_SoftSpace(f, newflag) |
| 986 | PyObject *f; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 987 | int newflag; |
| 988 | { |
| 989 | int oldflag = 0; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 990 | if (f == NULL) { |
| 991 | /* Do nothing */ |
| 992 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 993 | else if (PyFile_Check(f)) { |
| 994 | oldflag = ((PyFileObject *)f)->f_softspace; |
| 995 | ((PyFileObject *)f)->f_softspace = newflag; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 996 | } |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 997 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 998 | PyObject *v; |
| 999 | v = PyObject_GetAttrString(f, "softspace"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1000 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1001 | PyErr_Clear(); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1002 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1003 | if (PyInt_Check(v)) |
| 1004 | oldflag = PyInt_AsLong(v); |
| 1005 | Py_DECREF(v); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1006 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1007 | v = PyInt_FromLong((long)newflag); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1008 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1009 | PyErr_Clear(); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1010 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1011 | if (PyObject_SetAttrString(f, "softspace", v) != 0) |
| 1012 | PyErr_Clear(); |
| 1013 | Py_DECREF(v); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1014 | } |
| 1015 | } |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 1016 | return oldflag; |
| 1017 | } |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1018 | |
| 1019 | /* Interfaces to write objects/strings to file-like objects */ |
| 1020 | |
| 1021 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1022 | PyFile_WriteObject(v, f, flags) |
| 1023 | PyObject *v; |
| 1024 | PyObject *f; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1025 | int flags; |
| 1026 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1027 | PyObject *writer, *value, *args, *result; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1028 | if (f == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1029 | PyErr_SetString(PyExc_TypeError, "writeobject with NULL file"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1030 | return -1; |
| 1031 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1032 | else if (PyFile_Check(f)) { |
| 1033 | FILE *fp = PyFile_AsFile(f); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1034 | if (fp == NULL) { |
| 1035 | err_closed(); |
| 1036 | return -1; |
| 1037 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1038 | return PyObject_Print(v, fp, flags); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1039 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1040 | writer = PyObject_GetAttrString(f, "write"); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1041 | if (writer == NULL) |
| 1042 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1043 | if (flags & Py_PRINT_RAW) |
| 1044 | value = PyObject_Str(v); |
Guido van Rossum | c600411 | 1993-11-05 10:22:19 +0000 | [diff] [blame] | 1045 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1046 | value = PyObject_Repr(v); |
Guido van Rossum | c600411 | 1993-11-05 10:22:19 +0000 | [diff] [blame] | 1047 | if (value == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1048 | Py_DECREF(writer); |
Guido van Rossum | c600411 | 1993-11-05 10:22:19 +0000 | [diff] [blame] | 1049 | return -1; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1050 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1051 | args = Py_BuildValue("(O)", value); |
Guido van Rossum | e9eec54 | 1997-05-22 14:02:25 +0000 | [diff] [blame] | 1052 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1053 | Py_DECREF(value); |
| 1054 | Py_DECREF(writer); |
Guido van Rossum | d3f9a1a | 1995-07-10 23:32:26 +0000 | [diff] [blame] | 1055 | return -1; |
| 1056 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1057 | result = PyEval_CallObject(writer, args); |
| 1058 | Py_DECREF(args); |
| 1059 | Py_DECREF(value); |
| 1060 | Py_DECREF(writer); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1061 | if (result == NULL) |
| 1062 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1063 | Py_DECREF(result); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1064 | return 0; |
| 1065 | } |
| 1066 | |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1067 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1068 | PyFile_WriteString(s, f) |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1069 | char *s; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1070 | PyObject *f; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1071 | { |
| 1072 | if (f == NULL) { |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1073 | /* Should be caused by a pre-existing error */ |
| 1074 | if(!PyErr_Occurred()) |
| 1075 | PyErr_SetString(PyExc_SystemError, |
| 1076 | "null file for PyFile_WriteString"); |
| 1077 | return -1; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1078 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1079 | else if (PyFile_Check(f)) { |
| 1080 | FILE *fp = PyFile_AsFile(f); |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1081 | if (fp == NULL) { |
| 1082 | err_closed(); |
| 1083 | return -1; |
| 1084 | } |
| 1085 | fputs(s, fp); |
| 1086 | return 0; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1087 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1088 | else if (!PyErr_Occurred()) { |
| 1089 | PyObject *v = PyString_FromString(s); |
Guido van Rossum | 27a60b1 | 1997-05-22 22:25:11 +0000 | [diff] [blame] | 1090 | int err; |
| 1091 | if (v == NULL) |
| 1092 | return -1; |
| 1093 | err = PyFile_WriteObject(v, f, Py_PRINT_RAW); |
| 1094 | Py_DECREF(v); |
| 1095 | return err; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1096 | } |
Guido van Rossum | 74ba247 | 1997-07-13 03:56:50 +0000 | [diff] [blame] | 1097 | else |
| 1098 | return -1; |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1099 | } |