Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
| 2 | Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The |
| 3 | Netherlands. |
| 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 25 | /* File object implementation */ |
| 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | #include "allobjects.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 28 | |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 29 | #define BUF(v) GETSTRINGVALUE((stringobject *)v) |
| 30 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 31 | #include "errno.h" |
| 32 | #ifndef errno |
| 33 | extern int errno; |
| 34 | #endif |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 35 | |
| 36 | typedef struct { |
| 37 | OB_HEAD |
| 38 | FILE *f_fp; |
| 39 | object *f_name; |
| 40 | object *f_mode; |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 41 | int (*f_close) PROTO((FILE *)); |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 42 | int f_softspace; /* Flag used by 'print' command */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 43 | } fileobject; |
| 44 | |
| 45 | FILE * |
| 46 | getfilefile(f) |
| 47 | object *f; |
| 48 | { |
| 49 | if (!is_fileobject(f)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 50 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 51 | return NULL; |
| 52 | } |
| 53 | return ((fileobject *)f)->f_fp; |
| 54 | } |
| 55 | |
| 56 | object * |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 57 | newopenfileobject(fp, name, mode, close) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 58 | FILE *fp; |
| 59 | char *name; |
| 60 | char *mode; |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 61 | int (*close) FPROTO((FILE *)); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 62 | { |
| 63 | fileobject *f = NEWOBJ(fileobject, &Filetype); |
| 64 | if (f == NULL) |
| 65 | return NULL; |
| 66 | f->f_fp = NULL; |
| 67 | f->f_name = newstringobject(name); |
| 68 | f->f_mode = newstringobject(mode); |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 69 | f->f_close = close; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 70 | f->f_softspace = 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 71 | if (f->f_name == NULL || f->f_mode == NULL) { |
| 72 | DECREF(f); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 73 | return NULL; |
| 74 | } |
| 75 | f->f_fp = fp; |
| 76 | return (object *) f; |
| 77 | } |
| 78 | |
| 79 | object * |
| 80 | newfileobject(name, mode) |
| 81 | char *name, *mode; |
| 82 | { |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 83 | extern int fclose PROTO((FILE *)); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 84 | fileobject *f; |
| 85 | FILE *fp; |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 86 | f = (fileobject *) newopenfileobject((FILE *)NULL, name, mode, fclose); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 87 | if (f == NULL) |
| 88 | return NULL; |
Guido van Rossum | a08095a | 1991-02-13 23:25:27 +0000 | [diff] [blame] | 89 | #ifdef THINK_C |
| 90 | if (*mode == '*') { |
| 91 | FILE *fopenRF(); |
| 92 | f->f_fp = fopenRF(name, mode+1); |
| 93 | } |
| 94 | else |
| 95 | #endif |
| 96 | f->f_fp = fopen(name, mode); |
| 97 | if (f->f_fp == NULL) { |
| 98 | err_errno(RuntimeError); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 99 | DECREF(f); |
| 100 | return NULL; |
| 101 | } |
| 102 | return (object *)f; |
| 103 | } |
| 104 | |
| 105 | /* Methods */ |
| 106 | |
| 107 | static void |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 108 | file_dealloc(f) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 109 | fileobject *f; |
| 110 | { |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 111 | if (f->f_fp != NULL && f->f_close != NULL) |
| 112 | (*f->f_close)(f->f_fp); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 113 | if (f->f_name != NULL) |
| 114 | DECREF(f->f_name); |
| 115 | if (f->f_mode != NULL) |
| 116 | DECREF(f->f_mode); |
| 117 | free((char *)f); |
| 118 | } |
| 119 | |
| 120 | static void |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 121 | file_print(f, fp, flags) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 122 | fileobject *f; |
| 123 | FILE *fp; |
| 124 | int flags; |
| 125 | { |
| 126 | fprintf(fp, "<%s file ", f->f_fp == NULL ? "closed" : "open"); |
| 127 | printobject(f->f_name, fp, flags); |
| 128 | fprintf(fp, ", mode "); |
| 129 | printobject(f->f_mode, fp, flags); |
| 130 | fprintf(fp, ">"); |
| 131 | } |
| 132 | |
| 133 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 134 | file_repr(f) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 135 | fileobject *f; |
| 136 | { |
| 137 | char buf[300]; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 138 | /* XXX This differs from file_print if the filename contains |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 139 | quotes or other funny characters. */ |
| 140 | sprintf(buf, "<%s file '%.256s', mode '%.10s'>", |
| 141 | f->f_fp == NULL ? "closed" : "open", |
| 142 | getstringvalue(f->f_name), |
| 143 | getstringvalue(f->f_mode)); |
| 144 | return newstringobject(buf); |
| 145 | } |
| 146 | |
| 147 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 148 | file_close(f, args) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 149 | fileobject *f; |
| 150 | object *args; |
| 151 | { |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 152 | int sts = 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 153 | if (args != NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 154 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 155 | return NULL; |
| 156 | } |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 157 | errno = 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 158 | if (f->f_fp != NULL) { |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 159 | if (f->f_close != NULL) |
| 160 | sts = (*f->f_close)(f->f_fp); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 161 | f->f_fp = NULL; |
| 162 | } |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 163 | if (sts == EOF) { |
| 164 | if (errno == 0) |
| 165 | errno = EIO; |
| 166 | return err_errno(RuntimeError); |
| 167 | } |
| 168 | if (sts != 0) |
| 169 | return newintobject((long)sts); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 170 | INCREF(None); |
| 171 | return None; |
| 172 | } |
| 173 | |
| 174 | static object * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 175 | file_seek(f, args) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 176 | fileobject *f; |
| 177 | object *args; |
| 178 | { |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 179 | long offset; |
| 180 | long whence; |
| 181 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 182 | if (f->f_fp == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 183 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 184 | return NULL; |
| 185 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 186 | if (args != NULL && is_intobject(args)) { |
| 187 | offset = getintvalue(args); |
| 188 | whence = 0; /* SEEK_SET */ |
| 189 | } |
| 190 | else { |
| 191 | if (!getlonglongargs(args, &offset, &whence)) |
| 192 | return NULL; |
| 193 | } |
| 194 | errno = 0; |
| 195 | if (fseek(f->f_fp, offset, (int)whence) != 0) { |
| 196 | if (errno == 0) |
| 197 | errno = EIO; |
| 198 | return err_errno(RuntimeError); |
| 199 | } |
| 200 | INCREF(None); |
| 201 | return None; |
| 202 | } |
| 203 | |
| 204 | static object * |
| 205 | file_tell(f, args) |
| 206 | fileobject *f; |
| 207 | object *args; |
| 208 | { |
| 209 | long offset; |
| 210 | if (args != NULL || f->f_fp == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 211 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 212 | return NULL; |
| 213 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 214 | errno = 0; |
| 215 | offset = ftell(f->f_fp); |
| 216 | if (offset == -1L) { |
| 217 | if (errno == 0) |
| 218 | errno = EIO; |
| 219 | return err_errno(RuntimeError); |
| 220 | } |
| 221 | return newintobject(offset); |
| 222 | } |
| 223 | |
| 224 | static object * |
| 225 | file_flush(f, args) |
| 226 | fileobject *f; |
| 227 | object *args; |
| 228 | { |
| 229 | if (args != NULL || f->f_fp == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 230 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 231 | return NULL; |
| 232 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 233 | errno = 0; |
| 234 | if (fflush(f->f_fp) != 0) { |
| 235 | if (errno == 0) |
| 236 | errno = EIO; |
| 237 | return err_errno(RuntimeError); |
| 238 | } |
| 239 | INCREF(None); |
| 240 | return None; |
| 241 | } |
| 242 | |
| 243 | static object * |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 244 | file_isatty(f, args) |
| 245 | fileobject *f; |
| 246 | object *args; |
| 247 | { |
| 248 | if (args != NULL || f->f_fp == NULL) { |
| 249 | err_badarg(); |
| 250 | return NULL; |
| 251 | } |
| 252 | return newintobject((long)isatty(fileno(f->f_fp))); |
| 253 | } |
| 254 | |
| 255 | static object * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 256 | file_read(f, args) |
| 257 | fileobject *f; |
| 258 | object *args; |
| 259 | { |
| 260 | int n, n1, n2, n3; |
| 261 | object *v; |
| 262 | |
| 263 | if (f->f_fp == NULL) { |
| 264 | err_badarg(); |
| 265 | return NULL; |
| 266 | } |
| 267 | if (args == 0) |
| 268 | n = 0; |
| 269 | else { |
| 270 | if (!getintarg(args, &n)) |
| 271 | return NULL; |
| 272 | if (n < 0) { |
| 273 | err_badarg(); |
| 274 | return NULL; |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | n2 = n != 0 ? n : BUFSIZ; |
| 279 | v = newsizedstringobject((char *)NULL, n2); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 280 | if (v == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 281 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 282 | n1 = 0; |
| 283 | for (;;) { |
| 284 | n3 = fread(BUF(v)+n1, 1, n2-n1, f->f_fp); |
| 285 | /* XXX Error check? */ |
| 286 | if (n3 == 0) |
| 287 | break; |
| 288 | n1 += n3; |
| 289 | if (n1 == n) |
| 290 | break; |
| 291 | if (n == 0) { |
| 292 | n2 = n1 + BUFSIZ; |
| 293 | if (resizestring(&v, n2) < 0) |
| 294 | return NULL; |
| 295 | } |
| 296 | } |
| 297 | if (n1 != n2) |
| 298 | resizestring(&v, n1); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 299 | return v; |
| 300 | } |
| 301 | |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 302 | /* Internal routine to get a line. |
| 303 | Size argument interpretation: |
| 304 | > 0: max length; |
| 305 | = 0: read arbitrary line; |
| 306 | < 0: strip trailing '\n', raise EOFError if EOF reached immediately |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 307 | */ |
| 308 | |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 309 | object * |
| 310 | getline(f, n) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 311 | fileobject *f; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 312 | int n; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 313 | { |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 314 | register FILE *fp; |
| 315 | register int c; |
| 316 | register char *buf, *end; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 317 | int n1, n2; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 318 | object *v; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 319 | |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 320 | if ((fp = f->f_fp) == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 321 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 322 | return NULL; |
| 323 | } |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 324 | |
| 325 | n2 = n > 0 ? n : 100; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 326 | v = newsizedstringobject((char *)NULL, n2); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 327 | if (v == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 328 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 329 | buf = BUF(v); |
| 330 | end = buf + n2; |
| 331 | |
| 332 | for (;;) { |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 333 | if ((c = getc(fp)) == EOF) { |
Guido van Rossum | 76ad8ed | 1991-06-03 10:54:55 +0000 | [diff] [blame] | 334 | clearerr(fp); |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 335 | if (intrcheck()) { |
| 336 | DECREF(v); |
| 337 | err_set(KeyboardInterrupt); |
| 338 | return NULL; |
| 339 | } |
| 340 | if (n < 0 && buf == BUF(v)) { |
| 341 | DECREF(v); |
| 342 | err_set(EOFError); |
| 343 | return NULL; |
| 344 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 345 | break; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 346 | } |
| 347 | if ((*buf++ = c) == '\n') { |
| 348 | if (n < 0) |
| 349 | buf--; |
| 350 | break; |
| 351 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 352 | if (buf == end) { |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 353 | if (n > 0) |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 354 | break; |
| 355 | n1 = n2; |
| 356 | n2 += 1000; |
| 357 | if (resizestring(&v, n2) < 0) |
| 358 | return NULL; |
| 359 | buf = BUF(v) + n1; |
| 360 | end = BUF(v) + n2; |
| 361 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 362 | } |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 363 | |
| 364 | n1 = buf - BUF(v); |
| 365 | if (n1 != n2) |
| 366 | resizestring(&v, n1); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 367 | return v; |
| 368 | } |
| 369 | |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 370 | /* External C interface */ |
| 371 | |
| 372 | object * |
| 373 | filegetline(f, n) |
| 374 | object *f; |
| 375 | int n; |
| 376 | { |
| 377 | if (f == NULL || !is_fileobject(f)) { |
| 378 | err_badcall(); |
| 379 | return NULL; |
| 380 | } |
| 381 | return getline((fileobject *)f, n); |
| 382 | } |
| 383 | |
| 384 | /* Python method */ |
| 385 | |
| 386 | static object * |
| 387 | file_readline(f, args) |
| 388 | fileobject *f; |
| 389 | object *args; |
| 390 | { |
| 391 | int n; |
| 392 | |
| 393 | if (args == NULL) |
| 394 | n = 0; /* Unlimited */ |
| 395 | else { |
| 396 | if (!getintarg(args, &n)) |
| 397 | return NULL; |
| 398 | if (n < 0) { |
| 399 | err_badarg(); |
| 400 | return NULL; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | return getline((object *)f, n); |
| 405 | } |
| 406 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 407 | static object * |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 408 | file_readlines(f, args) |
| 409 | fileobject *f; |
| 410 | object *args; |
| 411 | { |
| 412 | object *list; |
| 413 | object *line; |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 414 | |
| 415 | if (!getnoarg(args)) |
| 416 | return NULL; |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 417 | if ((list = newlistobject(0)) == NULL) |
| 418 | return NULL; |
| 419 | for (;;) { |
Guido van Rossum | 0bd2441 | 1991-04-04 15:21:57 +0000 | [diff] [blame] | 420 | line = getline(f, 0); |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 421 | if (line != NULL && getstringsize(line) == 0) { |
| 422 | DECREF(line); |
| 423 | break; |
| 424 | } |
| 425 | if (line == NULL || addlistitem(list, line) != 0) { |
| 426 | DECREF(list); |
| 427 | XDECREF(line); |
| 428 | return NULL; |
| 429 | } |
| 430 | DECREF(line); |
| 431 | } |
| 432 | return list; |
| 433 | } |
| 434 | |
| 435 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 436 | file_write(f, args) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 437 | fileobject *f; |
| 438 | object *args; |
| 439 | { |
| 440 | int n, n2; |
| 441 | if (f->f_fp == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 442 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 443 | return NULL; |
| 444 | } |
| 445 | if (args == NULL || !is_stringobject(args)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 446 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 447 | return NULL; |
| 448 | } |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 449 | f->f_softspace = 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 450 | errno = 0; |
| 451 | n2 = fwrite(getstringvalue(args), 1, n = getstringsize(args), f->f_fp); |
| 452 | if (n2 != n) { |
| 453 | if (errno == 0) |
| 454 | errno = EIO; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 455 | err_errno(RuntimeError); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 456 | return NULL; |
| 457 | } |
| 458 | INCREF(None); |
| 459 | return None; |
| 460 | } |
| 461 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 462 | static struct methodlist file_methods[] = { |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 463 | {"close", file_close}, |
| 464 | {"flush", file_flush}, |
Guido van Rossum | a1ab7fa | 1991-06-04 19:37:39 +0000 | [diff] [blame^] | 465 | {"isatty", file_isatty}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 466 | {"read", file_read}, |
| 467 | {"readline", file_readline}, |
Guido van Rossum | ce5ba84 | 1991-03-06 13:06:18 +0000 | [diff] [blame] | 468 | {"readlines", file_readlines}, |
| 469 | {"seek", file_seek}, |
| 470 | {"tell", file_tell}, |
| 471 | {"write", file_write}, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 472 | {NULL, NULL} /* sentinel */ |
| 473 | }; |
| 474 | |
| 475 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 476 | file_getattr(f, name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 477 | fileobject *f; |
| 478 | char *name; |
| 479 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 480 | return findmethod(file_methods, (object *)f, name); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | typeobject Filetype = { |
| 484 | OB_HEAD_INIT(&Typetype) |
| 485 | 0, |
| 486 | "file", |
| 487 | sizeof(fileobject), |
| 488 | 0, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 489 | file_dealloc, /*tp_dealloc*/ |
| 490 | file_print, /*tp_print*/ |
| 491 | file_getattr, /*tp_getattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 492 | 0, /*tp_setattr*/ |
| 493 | 0, /*tp_compare*/ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 494 | file_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 495 | }; |
Guido van Rossum | eb183da | 1991-04-04 10:44:06 +0000 | [diff] [blame] | 496 | |
| 497 | /* Interface for the 'soft space' between print items. */ |
| 498 | |
| 499 | int |
| 500 | softspace(f, newflag) |
| 501 | object *f; |
| 502 | int newflag; |
| 503 | { |
| 504 | int oldflag = 0; |
| 505 | if (f != NULL && is_fileobject(f)) { |
| 506 | oldflag = ((fileobject *)f)->f_softspace; |
| 507 | ((fileobject *)f)->f_softspace = newflag; |
| 508 | } |
| 509 | return oldflag; |
| 510 | } |