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 | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
0f2d19dd JB |
41 | \f |
42 | ||
43 | ||
44 | #include <stdio.h> | |
0f2d19dd | 45 | #include "_scm.h" |
1146b6cd GH |
46 | #include "genio.h" |
47 | #include "read.h" | |
20e6290e | 48 | #include "fports.h" |
1146b6cd GH |
49 | #include "unif.h" |
50 | #include "chars.h" | |
20e6290e JB |
51 | |
52 | #include "ioext.h" | |
0f2d19dd | 53 | |
95b88819 GH |
54 | #ifdef HAVE_STRING_H |
55 | #include <string.h> | |
56 | #endif | |
57 | #ifdef HAVE_UNISTD_H | |
58 | #include <unistd.h> | |
59 | #endif | |
0f2d19dd JB |
60 | \f |
61 | ||
1146b6cd GH |
62 | SCM_PROC (s_read_delimited_x, "%read-delimited!", 3, 3, 0, scm_read_delimited_x); |
63 | ||
64 | SCM | |
65 | scm_read_delimited_x (delims, buf, gobble, port, start, end) | |
66 | SCM delims; | |
67 | SCM buf; | |
68 | SCM gobble; | |
69 | SCM port; | |
70 | SCM start; | |
71 | SCM end; | |
72 | { | |
73 | long j; | |
74 | char *cbuf; | |
75 | long cstart; | |
76 | long cend; | |
77 | int c; | |
78 | char *cdelims; | |
79 | int num_delims; | |
80 | ||
ae2fa5bc | 81 | SCM_ASSERT (SCM_NIMP (delims) && SCM_ROSTRINGP (delims), |
1146b6cd | 82 | delims, SCM_ARG1, s_read_delimited_x); |
ae2fa5bc GH |
83 | cdelims = SCM_ROCHARS (delims); |
84 | num_delims = SCM_ROLENGTH (delims); | |
1146b6cd GH |
85 | SCM_ASSERT (SCM_NIMP (buf) && SCM_STRINGP (buf), |
86 | buf, SCM_ARG2, s_read_delimited_x); | |
87 | cbuf = SCM_CHARS (buf); | |
88 | cend = SCM_LENGTH (buf); | |
89 | if (SCM_UNBNDP (port)) | |
90 | port = scm_cur_inp; | |
91 | else | |
92 | { | |
93 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), | |
94 | port, SCM_ARG1, s_read_delimited_x); | |
95 | } | |
96 | ||
97 | if (SCM_UNBNDP (start)) | |
98 | cstart = 0; | |
99 | else | |
100 | { | |
101 | cstart = scm_num2long (start, | |
102 | (char *) SCM_ARG5, s_read_delimited_x); | |
103 | if (cstart < 0 || cstart >= cend) | |
104 | scm_out_of_range (s_read_delimited_x, start); | |
105 | ||
106 | if (!SCM_UNBNDP (end)) | |
107 | { | |
108 | long tend = scm_num2long (end, (char *) SCM_ARG6, | |
109 | s_read_delimited_x); | |
110 | if (tend <= cstart || tend > cend) | |
111 | scm_out_of_range (s_read_delimited_x, end); | |
112 | cend = tend; | |
113 | } | |
114 | } | |
115 | ||
116 | for (j = cstart; j < cend; j++) | |
117 | { | |
118 | int k; | |
119 | ||
120 | c = scm_gen_getc (port); | |
121 | for (k = 0; k < num_delims; k++) | |
122 | { | |
123 | if (cdelims[k] == c) | |
124 | { | |
125 | if (SCM_FALSEP (gobble)) | |
126 | scm_gen_ungetc (c, port); | |
127 | ||
128 | return scm_cons (SCM_MAKICHR (c), | |
129 | scm_long2num (j - cstart)); | |
130 | } | |
131 | } | |
132 | if (c == EOF) | |
133 | return scm_cons (SCM_EOF_VAL, | |
134 | scm_long2num (j - cstart)); | |
135 | ||
136 | cbuf[j] = c; | |
137 | } | |
138 | return scm_cons (SCM_BOOL_F, scm_long2num (j - cstart)); | |
139 | } | |
140 | ||
141 | SCM_PROC (s_write_line, "write-line", 1, 1, 0, scm_write_line); | |
142 | ||
143 | SCM | |
144 | scm_write_line (obj, port) | |
145 | SCM obj; | |
146 | SCM port; | |
147 | { | |
148 | scm_display (obj, port); | |
149 | return scm_newline (port); | |
150 | } | |
151 | ||
063e05be | 152 | SCM_PROC (s_ftell, "ftell", 1, 0, 0, scm_ftell); |
1cc91f1b | 153 | |
0f2d19dd | 154 | SCM |
063e05be | 155 | scm_ftell (port) |
0f2d19dd | 156 | SCM port; |
0f2d19dd JB |
157 | { |
158 | long pos; | |
063e05be | 159 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_ftell); |
0f2d19dd JB |
160 | SCM_SYSCALL (pos = ftell ((FILE *)SCM_STREAM (port))); |
161 | if (pos < 0) | |
063e05be | 162 | scm_syserror (s_ftell); |
0f2d19dd JB |
163 | if (pos > 0 && SCM_CRDYP (port)) |
164 | pos--; | |
8588fa12 | 165 | return scm_long2num (pos); |
0f2d19dd JB |
166 | } |
167 | ||
168 | ||
169 | ||
063e05be | 170 | SCM_PROC (s_fseek, "fseek", 3, 0, 0, scm_fseek); |
1cc91f1b | 171 | |
0f2d19dd | 172 | SCM |
063e05be | 173 | scm_fseek (port, offset, whence) |
0f2d19dd JB |
174 | SCM port; |
175 | SCM offset; | |
176 | SCM whence; | |
0f2d19dd JB |
177 | { |
178 | int rv; | |
8588fa12 GH |
179 | long loff; |
180 | ||
063e05be GH |
181 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_fseek); |
182 | loff = scm_num2long (offset, (char *)SCM_ARG2, s_fseek); | |
0f2d19dd | 183 | SCM_ASSERT (SCM_INUMP (whence) && (SCM_INUM (whence) < 3) && (SCM_INUM (whence) >= 0), |
063e05be | 184 | whence, SCM_ARG3, s_fseek); |
8588fa12 | 185 | |
0f2d19dd JB |
186 | SCM_CLRDY (port); /* Clear ungetted char */ |
187 | /* Values of whence are interned in scm_init_ioext. */ | |
8588fa12 | 188 | rv = fseek ((FILE *)SCM_STREAM (port), loff, SCM_INUM (whence)); |
02b754d3 | 189 | if (rv != 0) |
063e05be | 190 | scm_syserror (s_fseek); |
02b754d3 | 191 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
192 | } |
193 | ||
194 | ||
195 | ||
063e05be | 196 | SCM_PROC (s_freopen, "freopen", 3, 0, 0, scm_freopen); |
1cc91f1b | 197 | |
0f2d19dd | 198 | SCM |
063e05be | 199 | scm_freopen (filename, modes, port) |
0f2d19dd JB |
200 | SCM filename; |
201 | SCM modes; | |
202 | SCM port; | |
0f2d19dd JB |
203 | { |
204 | FILE *f; | |
ae2fa5bc GH |
205 | SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename, |
206 | SCM_ARG1, s_freopen); | |
207 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, | |
208 | s_freopen); | |
89958ad0 JB |
209 | |
210 | SCM_COERCE_SUBSTR (filename); | |
211 | SCM_COERCE_SUBSTR (modes); | |
0f2d19dd | 212 | SCM_DEFER_INTS; |
063e05be | 213 | SCM_ASSERT (SCM_NIMP (port) && SCM_FPORTP (port), port, SCM_ARG3, s_freopen); |
ae2fa5bc GH |
214 | SCM_SYSCALL (f = freopen (SCM_ROCHARS (filename), SCM_ROCHARS (modes), |
215 | (FILE *)SCM_STREAM (port))); | |
0f2d19dd JB |
216 | if (!f) |
217 | { | |
218 | SCM p; | |
219 | p = port; | |
220 | port = SCM_MAKINUM (errno); | |
898a256f | 221 | SCM_SETAND_CAR (p, ~SCM_OPN); |
0f2d19dd JB |
222 | scm_remove_from_port_table (p); |
223 | } | |
224 | else | |
225 | { | |
ae2fa5bc | 226 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (SCM_ROCHARS (modes))); |
0f2d19dd | 227 | SCM_SETSTREAM (port, (SCM)f); |
ae2fa5bc | 228 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (SCM_ROCHARS (modes))); |
898a256f | 229 | if (SCM_BUF0 & SCM_CAR (port)) |
0f2d19dd JB |
230 | scm_setbuf0 (port); |
231 | } | |
232 | SCM_ALLOW_INTS; | |
233 | return port; | |
234 | } | |
235 | ||
236 | ||
237 | ||
063e05be | 238 | SCM_PROC (s_duplicate_port, "duplicate-port", 2, 0, 0, scm_duplicate_port); |
1cc91f1b | 239 | |
0f2d19dd | 240 | SCM |
063e05be | 241 | scm_duplicate_port (oldpt, modes) |
0f2d19dd JB |
242 | SCM oldpt; |
243 | SCM modes; | |
0f2d19dd JB |
244 | { |
245 | int oldfd; | |
246 | int newfd; | |
247 | FILE *f; | |
248 | SCM newpt; | |
ae2fa5bc GH |
249 | SCM_ASSERT (SCM_NIMP (oldpt) && SCM_OPPORTP (oldpt), oldpt, SCM_ARG1, |
250 | s_duplicate_port); | |
251 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, | |
252 | s_duplicate_port); | |
89958ad0 JB |
253 | |
254 | SCM_COERCE_SUBSTR (modes); | |
0f2d19dd JB |
255 | SCM_NEWCELL (newpt); |
256 | SCM_DEFER_INTS; | |
257 | oldfd = fileno ((FILE *)SCM_STREAM (oldpt)); | |
258 | if (oldfd == -1) | |
063e05be | 259 | scm_syserror (s_duplicate_port); |
0f2d19dd JB |
260 | SCM_SYSCALL (newfd = dup (oldfd)); |
261 | if (newfd == -1) | |
063e05be | 262 | scm_syserror (s_duplicate_port); |
ae2fa5bc | 263 | f = fdopen (newfd, SCM_ROCHARS (modes)); |
0f2d19dd JB |
264 | if (!f) |
265 | { | |
266 | SCM_SYSCALL (close (newfd)); | |
063e05be | 267 | scm_syserror (s_duplicate_port); |
0f2d19dd JB |
268 | } |
269 | { | |
270 | struct scm_port_table * pt; | |
271 | pt = scm_add_to_port_table (newpt); | |
272 | SCM_SETPTAB_ENTRY (newpt, pt); | |
ae2fa5bc | 273 | SCM_SETCAR (newpt, scm_tc16_fport | scm_mode_bits (SCM_ROCHARS (modes))); |
c85e73d3 | 274 | SCM_SETSTREAM (newpt, (SCM)f); |
898a256f | 275 | if (SCM_BUF0 & SCM_CAR (newpt)) |
0f2d19dd | 276 | scm_setbuf0 (newpt); |
ebf7394e | 277 | SCM_PTAB_ENTRY (newpt)->file_name = SCM_PTAB_ENTRY (oldpt)->file_name; |
0f2d19dd JB |
278 | } |
279 | SCM_ALLOW_INTS; | |
280 | return newpt; | |
281 | } | |
282 | ||
283 | ||
284 | ||
063e05be | 285 | SCM_PROC (s_redirect_port, "redirect-port", 2, 0, 0, scm_redirect_port); |
1cc91f1b | 286 | |
0f2d19dd | 287 | SCM |
9c29ac66 GH |
288 | scm_redirect_port (old, new) |
289 | SCM old; | |
290 | SCM new; | |
0f2d19dd JB |
291 | { |
292 | int ans, oldfd, newfd; | |
9c29ac66 | 293 | |
0f2d19dd | 294 | SCM_DEFER_INTS; |
9c29ac66 GH |
295 | SCM_ASSERT (SCM_NIMP (old) && SCM_OPPORTP (old), old, SCM_ARG1, s_redirect_port); |
296 | SCM_ASSERT (SCM_NIMP (new) && SCM_OPPORTP (new), new, SCM_ARG2, s_redirect_port); | |
297 | oldfd = fileno ((FILE *)SCM_STREAM (old)); | |
02b754d3 | 298 | if (oldfd == -1) |
063e05be | 299 | scm_syserror (s_redirect_port); |
9c29ac66 | 300 | newfd = fileno ((FILE *)SCM_STREAM (new)); |
02b754d3 | 301 | if (newfd == -1) |
063e05be | 302 | scm_syserror (s_redirect_port); |
02b754d3 GH |
303 | SCM_SYSCALL (ans = dup2 (oldfd, newfd)); |
304 | if (ans == -1) | |
063e05be | 305 | scm_syserror (s_redirect_port); |
0f2d19dd | 306 | SCM_ALLOW_INTS; |
02b754d3 | 307 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
308 | } |
309 | ||
a9488d12 GH |
310 | SCM_PROC (s_primitive_dup, "primitive-dup", 1, 0, 0, scm_primitive_dup); |
311 | SCM | |
312 | scm_primitive_dup (SCM fd_or_port) | |
313 | { | |
314 | int fd, newfd; | |
315 | ||
316 | SCM_DEFER_INTS; | |
317 | if (SCM_INUMP (fd_or_port)) | |
318 | fd = SCM_INUM (fd_or_port); | |
319 | else | |
320 | { | |
321 | SCM_ASSERT (SCM_NIMP (fd_or_port) && SCM_OPPORTP (fd_or_port), | |
322 | fd_or_port, SCM_ARG1, s_primitive_dup); | |
323 | fd = fileno ((FILE *)SCM_STREAM (fd_or_port)); | |
324 | if (fd == -1) | |
325 | scm_syserror (s_primitive_dup); | |
326 | } | |
327 | SCM_SYSCALL (newfd = dup (fd)); | |
328 | if (newfd == -1) | |
329 | scm_syserror (s_primitive_dup); | |
330 | SCM_ALLOW_INTS; | |
331 | return SCM_MAKINUM (newfd); | |
332 | } | |
333 | ||
334 | SCM_PROC (s_primitive_dup2, "primitive-dup2", 2, 0, 0, scm_primitive_dup2); | |
335 | SCM | |
336 | scm_primitive_dup2 (SCM fd_or_port, SCM fd) | |
337 | { | |
338 | int oldfd, newfd, rv; | |
339 | ||
340 | SCM_DEFER_INTS; | |
341 | if (SCM_INUMP (fd_or_port)) | |
342 | oldfd = SCM_INUM (fd_or_port); | |
343 | else | |
344 | { | |
345 | SCM_ASSERT (SCM_NIMP (fd_or_port) && SCM_OPPORTP (fd_or_port), | |
346 | fd_or_port, SCM_ARG1, s_primitive_dup2); | |
347 | oldfd = fileno ((FILE *)SCM_STREAM (fd_or_port)); | |
348 | if (oldfd == -1) | |
349 | scm_syserror (s_primitive_dup2); | |
350 | } | |
351 | ||
352 | SCM_ASSERT (SCM_INUMP (newfd), newfd, SCM_ARG2, s_primitive_dup2); | |
353 | newfd = SCM_INUM (fd); | |
354 | scm_evict_ports (newfd); /* see scsh manual. */ | |
355 | SCM_SYSCALL (rv = dup2 (oldfd, newfd)); | |
356 | if (rv == -1) | |
357 | scm_syserror (s_primitive_dup2); | |
358 | SCM_ALLOW_INTS; | |
359 | return SCM_UNSPECIFIED; | |
360 | } | |
361 | ||
063e05be | 362 | SCM_PROC (s_fileno, "fileno", 1, 0, 0, scm_fileno); |
1cc91f1b | 363 | |
0f2d19dd | 364 | SCM |
063e05be | 365 | scm_fileno (port) |
0f2d19dd | 366 | SCM port; |
0f2d19dd JB |
367 | { |
368 | int fd; | |
063e05be | 369 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_fileno); |
0f2d19dd | 370 | fd = fileno ((FILE *)SCM_STREAM (port)); |
02b754d3 | 371 | if (fd == -1) |
063e05be | 372 | scm_syserror (s_fileno); |
02b754d3 | 373 | return SCM_MAKINUM (fd); |
0f2d19dd JB |
374 | } |
375 | ||
063e05be | 376 | SCM_PROC (s_isatty, "isatty?", 1, 0, 0, scm_isatty_p); |
1cc91f1b | 377 | |
0f2d19dd | 378 | SCM |
063e05be | 379 | scm_isatty_p (port) |
0f2d19dd | 380 | SCM port; |
0f2d19dd JB |
381 | { |
382 | int rv; | |
063e05be | 383 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_isatty); |
0f2d19dd JB |
384 | rv = fileno ((FILE *)SCM_STREAM (port)); |
385 | if (rv == -1) | |
063e05be | 386 | scm_syserror (s_isatty); |
02b754d3 GH |
387 | rv = isatty (rv); |
388 | return rv ? SCM_BOOL_T : SCM_BOOL_F; | |
0f2d19dd JB |
389 | } |
390 | ||
391 | ||
392 | ||
063e05be | 393 | SCM_PROC (s_fdopen, "fdopen", 2, 0, 0, scm_fdopen); |
1cc91f1b | 394 | |
0f2d19dd | 395 | SCM |
063e05be | 396 | scm_fdopen (fdes, modes) |
0f2d19dd JB |
397 | SCM fdes; |
398 | SCM modes; | |
0f2d19dd JB |
399 | { |
400 | FILE *f; | |
401 | SCM port; | |
8b13c6b3 | 402 | struct scm_port_table * pt; |
0f2d19dd | 403 | |
063e05be | 404 | SCM_ASSERT (SCM_INUMP (fdes), fdes, SCM_ARG1, s_fdopen); |
ae2fa5bc GH |
405 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, |
406 | s_fdopen); | |
89958ad0 | 407 | SCM_COERCE_SUBSTR (modes); |
8b13c6b3 | 408 | SCM_NEWCELL (port); |
0f2d19dd | 409 | SCM_DEFER_INTS; |
ae2fa5bc | 410 | f = fdopen (SCM_INUM (fdes), SCM_ROCHARS (modes)); |
0f2d19dd | 411 | if (f == NULL) |
063e05be | 412 | scm_syserror (s_fdopen); |
8b13c6b3 GH |
413 | pt = scm_add_to_port_table (port); |
414 | SCM_SETPTAB_ENTRY (port, pt); | |
ae2fa5bc | 415 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (SCM_ROCHARS (modes))); |
898a256f | 416 | if (SCM_BUF0 & SCM_CAR (port)) |
8b13c6b3 GH |
417 | scm_setbuf0 (port); |
418 | SCM_SETSTREAM (port, (SCM)f); | |
0f2d19dd JB |
419 | SCM_ALLOW_INTS; |
420 | return port; | |
421 | } | |
422 | ||
423 | ||
424 | ||
425 | /* Move a port's underlying file descriptor to a given value. | |
8b13c6b3 GH |
426 | * Returns #f if fdes is already the given value. |
427 | * #t if fdes moved. | |
0f2d19dd JB |
428 | * MOVE->FDES is implemented in Scheme and calls this primitive. |
429 | */ | |
063e05be | 430 | SCM_PROC (s_primitive_move_to_fdes, "primitive-move->fdes", 2, 0, 0, scm_primitive_move_to_fdes); |
1cc91f1b | 431 | |
0f2d19dd | 432 | SCM |
063e05be | 433 | scm_primitive_move_to_fdes (port, fd) |
0f2d19dd JB |
434 | SCM port; |
435 | SCM fd; | |
0f2d19dd JB |
436 | { |
437 | FILE *stream; | |
438 | int old_fd; | |
439 | int new_fd; | |
440 | int rv; | |
441 | ||
063e05be GH |
442 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPFPORTP (port), port, SCM_ARG1, s_primitive_move_to_fdes); |
443 | SCM_ASSERT (SCM_INUMP (fd), fd, SCM_ARG2, s_primitive_move_to_fdes); | |
0f2d19dd JB |
444 | SCM_DEFER_INTS; |
445 | stream = (FILE *)SCM_STREAM (port); | |
446 | old_fd = fileno (stream); | |
447 | new_fd = SCM_INUM (fd); | |
448 | if (old_fd == new_fd) | |
449 | { | |
450 | SCM_ALLOW_INTS; | |
8b13c6b3 | 451 | return SCM_BOOL_F; |
0f2d19dd JB |
452 | } |
453 | scm_evict_ports (new_fd); | |
454 | rv = dup2 (old_fd, new_fd); | |
455 | if (rv == -1) | |
063e05be | 456 | scm_syserror (s_primitive_move_to_fdes); |
0f2d19dd JB |
457 | scm_setfileno (stream, new_fd); |
458 | SCM_SYSCALL (close (old_fd)); | |
459 | SCM_ALLOW_INTS; | |
8b13c6b3 | 460 | return SCM_BOOL_T; |
0f2d19dd JB |
461 | } |
462 | ||
67ec3667 GH |
463 | #ifdef FD_SETTER |
464 | #define SET_FILE_FD_FIELD(F,D) ((F)->FD_SETTER = (D)) | |
465 | #endif | |
1cc91f1b | 466 | |
0f2d19dd JB |
467 | void |
468 | scm_setfileno (fs, fd) | |
469 | FILE *fs; | |
470 | int fd; | |
0f2d19dd JB |
471 | { |
472 | #ifdef SET_FILE_FD_FIELD | |
473 | SET_FILE_FD_FIELD(fs, fd); | |
474 | #else | |
4edc089c GH |
475 | scm_misc_error ("scm_setfileno", "Not fully implemented on this platform", |
476 | SCM_EOL); | |
0f2d19dd JB |
477 | #endif |
478 | } | |
479 | ||
0f2d19dd JB |
480 | /* Return a list of ports using a given file descriptor. */ |
481 | SCM_PROC(s_fdes_to_ports, "fdes->ports", 1, 0, 0, scm_fdes_to_ports); | |
1cc91f1b | 482 | |
0f2d19dd JB |
483 | SCM |
484 | scm_fdes_to_ports (fd) | |
485 | SCM fd; | |
0f2d19dd JB |
486 | { |
487 | SCM result = SCM_EOL; | |
488 | int int_fd; | |
489 | int i; | |
490 | ||
491 | SCM_ASSERT (SCM_INUMP (fd), fd, SCM_ARG1, s_fdes_to_ports); | |
492 | int_fd = SCM_INUM (fd); | |
493 | ||
494 | SCM_DEFER_INTS; | |
495 | for (i = 0; i < scm_port_table_size; i++) | |
496 | { | |
497 | if (SCM_FPORTP (scm_port_table[i]->port) | |
498 | && fileno ((FILE *)SCM_STREAM (scm_port_table[i]->port)) == int_fd) | |
499 | result = scm_cons (scm_port_table[i]->port, result); | |
500 | } | |
501 | SCM_ALLOW_INTS; | |
502 | return result; | |
503 | } | |
504 | ||
1cc91f1b | 505 | |
0f2d19dd JB |
506 | void |
507 | scm_init_ioext () | |
0f2d19dd JB |
508 | { |
509 | /* fseek() symbols. */ | |
510 | scm_sysintern ("SEEK_SET", SCM_MAKINUM (SEEK_SET)); | |
511 | scm_sysintern ("SEEK_CUR", SCM_MAKINUM (SEEK_CUR)); | |
512 | scm_sysintern ("SEEK_END", SCM_MAKINUM (SEEK_END)); | |
513 | ||
0f2d19dd JB |
514 | #include "ioext.x" |
515 | } | |
516 |