Commit | Line | Data |
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1146b6cd | 1 | /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
43 | ||
44 | #include <stdio.h> | |
0f2d19dd JB |
45 | #include "fd.h" |
46 | #include "_scm.h" | |
1146b6cd GH |
47 | #include "genio.h" |
48 | #include "read.h" | |
20e6290e | 49 | #include "fports.h" |
1146b6cd GH |
50 | #include "unif.h" |
51 | #include "chars.h" | |
20e6290e JB |
52 | |
53 | #include "ioext.h" | |
0f2d19dd | 54 | |
95b88819 GH |
55 | #ifdef HAVE_STRING_H |
56 | #include <string.h> | |
57 | #endif | |
58 | #ifdef HAVE_UNISTD_H | |
59 | #include <unistd.h> | |
60 | #endif | |
0f2d19dd JB |
61 | \f |
62 | ||
1146b6cd GH |
63 | SCM_PROC (s_read_delimited_x, "%read-delimited!", 3, 3, 0, scm_read_delimited_x); |
64 | ||
65 | SCM | |
66 | scm_read_delimited_x (delims, buf, gobble, port, start, end) | |
67 | SCM delims; | |
68 | SCM buf; | |
69 | SCM gobble; | |
70 | SCM port; | |
71 | SCM start; | |
72 | SCM end; | |
73 | { | |
74 | long j; | |
75 | char *cbuf; | |
76 | long cstart; | |
77 | long cend; | |
78 | int c; | |
79 | char *cdelims; | |
80 | int num_delims; | |
81 | ||
82 | SCM_ASSERT (SCM_NIMP (delims) && SCM_STRINGP (delims), | |
83 | delims, SCM_ARG1, s_read_delimited_x); | |
84 | cdelims = SCM_CHARS (delims); | |
85 | num_delims = SCM_LENGTH (delims); | |
86 | SCM_ASSERT (SCM_NIMP (buf) && SCM_STRINGP (buf), | |
87 | buf, SCM_ARG2, s_read_delimited_x); | |
88 | cbuf = SCM_CHARS (buf); | |
89 | cend = SCM_LENGTH (buf); | |
90 | if (SCM_UNBNDP (port)) | |
91 | port = scm_cur_inp; | |
92 | else | |
93 | { | |
94 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), | |
95 | port, SCM_ARG1, s_read_delimited_x); | |
96 | } | |
97 | ||
98 | if (SCM_UNBNDP (start)) | |
99 | cstart = 0; | |
100 | else | |
101 | { | |
102 | cstart = scm_num2long (start, | |
103 | (char *) SCM_ARG5, s_read_delimited_x); | |
104 | if (cstart < 0 || cstart >= cend) | |
105 | scm_out_of_range (s_read_delimited_x, start); | |
106 | ||
107 | if (!SCM_UNBNDP (end)) | |
108 | { | |
109 | long tend = scm_num2long (end, (char *) SCM_ARG6, | |
110 | s_read_delimited_x); | |
111 | if (tend <= cstart || tend > cend) | |
112 | scm_out_of_range (s_read_delimited_x, end); | |
113 | cend = tend; | |
114 | } | |
115 | } | |
116 | ||
117 | for (j = cstart; j < cend; j++) | |
118 | { | |
119 | int k; | |
120 | ||
121 | c = scm_gen_getc (port); | |
122 | for (k = 0; k < num_delims; k++) | |
123 | { | |
124 | if (cdelims[k] == c) | |
125 | { | |
126 | if (SCM_FALSEP (gobble)) | |
127 | scm_gen_ungetc (c, port); | |
128 | ||
129 | return scm_cons (SCM_MAKICHR (c), | |
130 | scm_long2num (j - cstart)); | |
131 | } | |
132 | } | |
133 | if (c == EOF) | |
134 | return scm_cons (SCM_EOF_VAL, | |
135 | scm_long2num (j - cstart)); | |
136 | ||
137 | cbuf[j] = c; | |
138 | } | |
139 | return scm_cons (SCM_BOOL_F, scm_long2num (j - cstart)); | |
140 | } | |
141 | ||
142 | SCM_PROC (s_write_line, "write-line", 1, 1, 0, scm_write_line); | |
143 | ||
144 | SCM | |
145 | scm_write_line (obj, port) | |
146 | SCM obj; | |
147 | SCM port; | |
148 | { | |
149 | scm_display (obj, port); | |
150 | return scm_newline (port); | |
151 | } | |
152 | ||
063e05be | 153 | SCM_PROC (s_ftell, "ftell", 1, 0, 0, scm_ftell); |
1cc91f1b | 154 | |
0f2d19dd | 155 | SCM |
063e05be | 156 | scm_ftell (port) |
0f2d19dd | 157 | SCM port; |
0f2d19dd JB |
158 | { |
159 | long pos; | |
063e05be | 160 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_ftell); |
0f2d19dd JB |
161 | SCM_SYSCALL (pos = ftell ((FILE *)SCM_STREAM (port))); |
162 | if (pos < 0) | |
063e05be | 163 | scm_syserror (s_ftell); |
0f2d19dd JB |
164 | if (pos > 0 && SCM_CRDYP (port)) |
165 | pos--; | |
8588fa12 | 166 | return scm_long2num (pos); |
0f2d19dd JB |
167 | } |
168 | ||
169 | ||
170 | ||
063e05be | 171 | SCM_PROC (s_fseek, "fseek", 3, 0, 0, scm_fseek); |
1cc91f1b | 172 | |
0f2d19dd | 173 | SCM |
063e05be | 174 | scm_fseek (port, offset, whence) |
0f2d19dd JB |
175 | SCM port; |
176 | SCM offset; | |
177 | SCM whence; | |
0f2d19dd JB |
178 | { |
179 | int rv; | |
8588fa12 GH |
180 | long loff; |
181 | ||
063e05be GH |
182 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_fseek); |
183 | loff = scm_num2long (offset, (char *)SCM_ARG2, s_fseek); | |
0f2d19dd | 184 | SCM_ASSERT (SCM_INUMP (whence) && (SCM_INUM (whence) < 3) && (SCM_INUM (whence) >= 0), |
063e05be | 185 | whence, SCM_ARG3, s_fseek); |
8588fa12 | 186 | |
0f2d19dd JB |
187 | SCM_CLRDY (port); /* Clear ungetted char */ |
188 | /* Values of whence are interned in scm_init_ioext. */ | |
8588fa12 | 189 | rv = fseek ((FILE *)SCM_STREAM (port), loff, SCM_INUM (whence)); |
02b754d3 | 190 | if (rv != 0) |
063e05be | 191 | scm_syserror (s_fseek); |
02b754d3 | 192 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
193 | } |
194 | ||
195 | ||
196 | ||
063e05be | 197 | SCM_PROC (s_freopen, "freopen", 3, 0, 0, scm_freopen); |
1cc91f1b | 198 | |
0f2d19dd | 199 | SCM |
063e05be | 200 | scm_freopen (filename, modes, port) |
0f2d19dd JB |
201 | SCM filename; |
202 | SCM modes; | |
203 | SCM port; | |
0f2d19dd JB |
204 | { |
205 | FILE *f; | |
063e05be GH |
206 | SCM_ASSERT (SCM_NIMP (filename) && SCM_STRINGP (filename), filename, SCM_ARG1, s_freopen); |
207 | SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_freopen); | |
0f2d19dd | 208 | SCM_DEFER_INTS; |
063e05be | 209 | SCM_ASSERT (SCM_NIMP (port) && SCM_FPORTP (port), port, SCM_ARG3, s_freopen); |
0f2d19dd JB |
210 | SCM_SYSCALL (f = freopen (SCM_CHARS (filename), SCM_CHARS (modes), (FILE *)SCM_STREAM (port))); |
211 | if (!f) | |
212 | { | |
213 | SCM p; | |
214 | p = port; | |
215 | port = SCM_MAKINUM (errno); | |
898a256f | 216 | SCM_SETAND_CAR (p, ~SCM_OPN); |
0f2d19dd JB |
217 | scm_remove_from_port_table (p); |
218 | } | |
219 | else | |
220 | { | |
898a256f | 221 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes))); |
0f2d19dd | 222 | SCM_SETSTREAM (port, (SCM)f); |
898a256f MD |
223 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes))); |
224 | if (SCM_BUF0 & SCM_CAR (port)) | |
0f2d19dd JB |
225 | scm_setbuf0 (port); |
226 | } | |
227 | SCM_ALLOW_INTS; | |
228 | return port; | |
229 | } | |
230 | ||
231 | ||
232 | ||
063e05be | 233 | SCM_PROC (s_duplicate_port, "duplicate-port", 2, 0, 0, scm_duplicate_port); |
1cc91f1b | 234 | |
0f2d19dd | 235 | SCM |
063e05be | 236 | scm_duplicate_port (oldpt, modes) |
0f2d19dd JB |
237 | SCM oldpt; |
238 | SCM modes; | |
0f2d19dd JB |
239 | { |
240 | int oldfd; | |
241 | int newfd; | |
242 | FILE *f; | |
243 | SCM newpt; | |
063e05be GH |
244 | SCM_ASSERT (SCM_NIMP (oldpt) && SCM_OPPORTP (oldpt), oldpt, SCM_ARG1, s_duplicate_port); |
245 | SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_duplicate_port); | |
0f2d19dd JB |
246 | SCM_NEWCELL (newpt); |
247 | SCM_DEFER_INTS; | |
248 | oldfd = fileno ((FILE *)SCM_STREAM (oldpt)); | |
249 | if (oldfd == -1) | |
063e05be | 250 | scm_syserror (s_duplicate_port); |
0f2d19dd JB |
251 | SCM_SYSCALL (newfd = dup (oldfd)); |
252 | if (newfd == -1) | |
063e05be | 253 | scm_syserror (s_duplicate_port); |
0f2d19dd JB |
254 | f = fdopen (newfd, SCM_CHARS (modes)); |
255 | if (!f) | |
256 | { | |
257 | SCM_SYSCALL (close (newfd)); | |
063e05be | 258 | scm_syserror (s_duplicate_port); |
0f2d19dd JB |
259 | } |
260 | { | |
261 | struct scm_port_table * pt; | |
262 | pt = scm_add_to_port_table (newpt); | |
263 | SCM_SETPTAB_ENTRY (newpt, pt); | |
898a256f MD |
264 | SCM_SETCAR (newpt, scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes))); |
265 | if (SCM_BUF0 & SCM_CAR (newpt)) | |
0f2d19dd JB |
266 | scm_setbuf0 (newpt); |
267 | SCM_SETSTREAM (newpt, (SCM)f); | |
ebf7394e | 268 | SCM_PTAB_ENTRY (newpt)->file_name = SCM_PTAB_ENTRY (oldpt)->file_name; |
0f2d19dd JB |
269 | } |
270 | SCM_ALLOW_INTS; | |
271 | return newpt; | |
272 | } | |
273 | ||
274 | ||
275 | ||
063e05be | 276 | SCM_PROC (s_redirect_port, "redirect-port", 2, 0, 0, scm_redirect_port); |
1cc91f1b | 277 | |
0f2d19dd | 278 | SCM |
063e05be | 279 | scm_redirect_port (into_pt, from_pt) |
0f2d19dd JB |
280 | SCM into_pt; |
281 | SCM from_pt; | |
0f2d19dd JB |
282 | { |
283 | int ans, oldfd, newfd; | |
284 | SCM_DEFER_INTS; | |
063e05be GH |
285 | SCM_ASSERT (SCM_NIMP (into_pt) && SCM_OPPORTP (into_pt), into_pt, SCM_ARG1, s_redirect_port); |
286 | SCM_ASSERT (SCM_NIMP (from_pt) && SCM_OPPORTP (from_pt), from_pt, SCM_ARG2, s_redirect_port); | |
0f2d19dd | 287 | oldfd = fileno ((FILE *)SCM_STREAM (into_pt)); |
02b754d3 | 288 | if (oldfd == -1) |
063e05be | 289 | scm_syserror (s_redirect_port); |
0f2d19dd | 290 | newfd = fileno ((FILE *)SCM_STREAM (from_pt)); |
02b754d3 | 291 | if (newfd == -1) |
063e05be | 292 | scm_syserror (s_redirect_port); |
02b754d3 GH |
293 | SCM_SYSCALL (ans = dup2 (oldfd, newfd)); |
294 | if (ans == -1) | |
063e05be | 295 | scm_syserror (s_redirect_port); |
0f2d19dd | 296 | SCM_ALLOW_INTS; |
02b754d3 | 297 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
298 | } |
299 | ||
063e05be | 300 | SCM_PROC (s_fileno, "fileno", 1, 0, 0, scm_fileno); |
1cc91f1b | 301 | |
0f2d19dd | 302 | SCM |
063e05be | 303 | scm_fileno (port) |
0f2d19dd | 304 | SCM port; |
0f2d19dd JB |
305 | { |
306 | int fd; | |
063e05be | 307 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_fileno); |
0f2d19dd | 308 | fd = fileno ((FILE *)SCM_STREAM (port)); |
02b754d3 | 309 | if (fd == -1) |
063e05be | 310 | scm_syserror (s_fileno); |
02b754d3 | 311 | return SCM_MAKINUM (fd); |
0f2d19dd JB |
312 | } |
313 | ||
063e05be | 314 | SCM_PROC (s_isatty, "isatty?", 1, 0, 0, scm_isatty_p); |
1cc91f1b | 315 | |
0f2d19dd | 316 | SCM |
063e05be | 317 | scm_isatty_p (port) |
0f2d19dd | 318 | SCM port; |
0f2d19dd JB |
319 | { |
320 | int rv; | |
063e05be | 321 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_isatty); |
0f2d19dd JB |
322 | rv = fileno ((FILE *)SCM_STREAM (port)); |
323 | if (rv == -1) | |
063e05be | 324 | scm_syserror (s_isatty); |
02b754d3 GH |
325 | rv = isatty (rv); |
326 | return rv ? SCM_BOOL_T : SCM_BOOL_F; | |
0f2d19dd JB |
327 | } |
328 | ||
329 | ||
330 | ||
063e05be | 331 | SCM_PROC (s_fdopen, "fdopen", 2, 0, 0, scm_fdopen); |
1cc91f1b | 332 | |
0f2d19dd | 333 | SCM |
063e05be | 334 | scm_fdopen (fdes, modes) |
0f2d19dd JB |
335 | SCM fdes; |
336 | SCM modes; | |
0f2d19dd JB |
337 | { |
338 | FILE *f; | |
339 | SCM port; | |
8b13c6b3 | 340 | struct scm_port_table * pt; |
0f2d19dd | 341 | |
063e05be GH |
342 | SCM_ASSERT (SCM_INUMP (fdes), fdes, SCM_ARG1, s_fdopen); |
343 | SCM_ASSERT (SCM_NIMP (modes) && SCM_STRINGP (modes), modes, SCM_ARG2, s_fdopen); | |
8b13c6b3 | 344 | SCM_NEWCELL (port); |
0f2d19dd JB |
345 | SCM_DEFER_INTS; |
346 | f = fdopen (SCM_INUM (fdes), SCM_CHARS (modes)); | |
347 | if (f == NULL) | |
063e05be | 348 | scm_syserror (s_fdopen); |
8b13c6b3 GH |
349 | pt = scm_add_to_port_table (port); |
350 | SCM_SETPTAB_ENTRY (port, pt); | |
898a256f MD |
351 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (SCM_CHARS (modes))); |
352 | if (SCM_BUF0 & SCM_CAR (port)) | |
8b13c6b3 GH |
353 | scm_setbuf0 (port); |
354 | SCM_SETSTREAM (port, (SCM)f); | |
0f2d19dd JB |
355 | SCM_ALLOW_INTS; |
356 | return port; | |
357 | } | |
358 | ||
359 | ||
360 | ||
361 | /* Move a port's underlying file descriptor to a given value. | |
8b13c6b3 GH |
362 | * Returns #f if fdes is already the given value. |
363 | * #t if fdes moved. | |
0f2d19dd JB |
364 | * MOVE->FDES is implemented in Scheme and calls this primitive. |
365 | */ | |
063e05be | 366 | SCM_PROC (s_primitive_move_to_fdes, "primitive-move->fdes", 2, 0, 0, scm_primitive_move_to_fdes); |
1cc91f1b | 367 | |
0f2d19dd | 368 | SCM |
063e05be | 369 | scm_primitive_move_to_fdes (port, fd) |
0f2d19dd JB |
370 | SCM port; |
371 | SCM fd; | |
0f2d19dd JB |
372 | { |
373 | FILE *stream; | |
374 | int old_fd; | |
375 | int new_fd; | |
376 | int rv; | |
377 | ||
063e05be GH |
378 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_primitive_move_to_fdes); |
379 | SCM_ASSERT (SCM_INUMP (fd), fd, SCM_ARG2, s_primitive_move_to_fdes); | |
0f2d19dd JB |
380 | SCM_DEFER_INTS; |
381 | stream = (FILE *)SCM_STREAM (port); | |
382 | old_fd = fileno (stream); | |
383 | new_fd = SCM_INUM (fd); | |
384 | if (old_fd == new_fd) | |
385 | { | |
386 | SCM_ALLOW_INTS; | |
8b13c6b3 | 387 | return SCM_BOOL_F; |
0f2d19dd JB |
388 | } |
389 | scm_evict_ports (new_fd); | |
390 | rv = dup2 (old_fd, new_fd); | |
391 | if (rv == -1) | |
063e05be | 392 | scm_syserror (s_primitive_move_to_fdes); |
0f2d19dd JB |
393 | scm_setfileno (stream, new_fd); |
394 | SCM_SYSCALL (close (old_fd)); | |
395 | SCM_ALLOW_INTS; | |
8b13c6b3 | 396 | return SCM_BOOL_T; |
0f2d19dd JB |
397 | } |
398 | ||
1cc91f1b | 399 | |
0f2d19dd JB |
400 | void |
401 | scm_setfileno (fs, fd) | |
402 | FILE *fs; | |
403 | int fd; | |
0f2d19dd JB |
404 | { |
405 | #ifdef SET_FILE_FD_FIELD | |
406 | SET_FILE_FD_FIELD(fs, fd); | |
407 | #else | |
408 | Configure could not guess the name of the correct field in a FILE *. | |
409 | ||
410 | This function needs to be ported to your system. | |
411 | ||
412 | SET_FILE_FD_FIELD should change the descriptor refered to by a stdio | |
413 | stream, and nothing else. | |
414 | ||
415 | The way to port this file is to add cases to configure.in. Search | |
416 | that file for "SET_FILE_FD_FIELD" and follow the examples there. | |
417 | #endif | |
418 | } | |
419 | ||
420 | /* Move ports with the specified file descriptor to new descriptors, | |
421 | * reseting the revealed count to 0. | |
422 | * Should be called with SCM_DEFER_INTS active. | |
423 | */ | |
1cc91f1b | 424 | |
0f2d19dd JB |
425 | void |
426 | scm_evict_ports (fd) | |
427 | int fd; | |
0f2d19dd JB |
428 | { |
429 | int i; | |
430 | ||
431 | for (i = 0; i < scm_port_table_size; i++) | |
432 | { | |
433 | if (SCM_FPORTP (scm_port_table[i]->port) | |
434 | && fileno ((FILE *)SCM_STREAM (scm_port_table[i]->port)) == fd) | |
435 | { | |
436 | scm_setfileno ((FILE *)SCM_STREAM (scm_port_table[i]->port), dup (fd)); | |
437 | scm_set_port_revealed_x (scm_port_table[i]->port, SCM_MAKINUM (0)); | |
438 | } | |
439 | } | |
440 | } | |
441 | ||
442 | /* Return a list of ports using a given file descriptor. */ | |
443 | SCM_PROC(s_fdes_to_ports, "fdes->ports", 1, 0, 0, scm_fdes_to_ports); | |
1cc91f1b | 444 | |
0f2d19dd JB |
445 | SCM |
446 | scm_fdes_to_ports (fd) | |
447 | SCM fd; | |
0f2d19dd JB |
448 | { |
449 | SCM result = SCM_EOL; | |
450 | int int_fd; | |
451 | int i; | |
452 | ||
453 | SCM_ASSERT (SCM_INUMP (fd), fd, SCM_ARG1, s_fdes_to_ports); | |
454 | int_fd = SCM_INUM (fd); | |
455 | ||
456 | SCM_DEFER_INTS; | |
457 | for (i = 0; i < scm_port_table_size; i++) | |
458 | { | |
459 | if (SCM_FPORTP (scm_port_table[i]->port) | |
460 | && fileno ((FILE *)SCM_STREAM (scm_port_table[i]->port)) == int_fd) | |
461 | result = scm_cons (scm_port_table[i]->port, result); | |
462 | } | |
463 | SCM_ALLOW_INTS; | |
464 | return result; | |
465 | } | |
466 | ||
1cc91f1b | 467 | |
0f2d19dd JB |
468 | void |
469 | scm_init_ioext () | |
0f2d19dd JB |
470 | { |
471 | /* fseek() symbols. */ | |
472 | scm_sysintern ("SEEK_SET", SCM_MAKINUM (SEEK_SET)); | |
473 | scm_sysintern ("SEEK_CUR", SCM_MAKINUM (SEEK_CUR)); | |
474 | scm_sysintern ("SEEK_END", SCM_MAKINUM (SEEK_END)); | |
475 | ||
0f2d19dd JB |
476 | #include "ioext.x" |
477 | } | |
478 |