Commit | Line | Data |
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3d8d56df | 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 | #include <stdio.h> | |
44 | #include "_scm.h" | |
20e6290e JB |
45 | #include "markers.h" |
46 | ||
47 | #include "fports.h" | |
95b88819 GH |
48 | |
49 | #ifdef HAVE_STRING_H | |
50 | #include <string.h> | |
51 | #endif | |
0f2d19dd JB |
52 | #ifdef HAVE_UNISTD_H |
53 | #include <unistd.h> | |
54 | #else | |
0f2d19dd JB |
55 | scm_sizet fwrite (); |
56 | #endif | |
0f2d19dd JB |
57 | |
58 | ||
59 | #ifdef __IBMC__ | |
60 | #include <io.h> | |
61 | #include <direct.h> | |
0f2d19dd JB |
62 | #else |
63 | #ifndef MSDOS | |
64 | #ifndef ultrix | |
65 | #ifndef vms | |
66 | #ifdef _DCC | |
67 | #include <ioctl.h> | |
68 | #define setbuf(stream, buf) setvbuf(stream, buf, _IONBF, 0) | |
69 | #else | |
70 | #ifdef MWC | |
71 | #include <sys/io.h> | |
72 | #else | |
73 | #ifndef THINK_C | |
74 | #ifndef ARM_ULIB | |
75 | #include <sys/ioctl.h> | |
76 | #endif | |
77 | #endif | |
78 | #endif | |
79 | #endif | |
80 | #endif | |
81 | #endif | |
82 | #endif | |
83 | #endif | |
84 | \f | |
85 | ||
86 | /* {Ports - file ports} | |
87 | * | |
88 | */ | |
89 | ||
90 | /* should be called with SCM_DEFER_INTS active */ | |
1717856b | 91 | |
0f2d19dd JB |
92 | SCM |
93 | scm_setbuf0 (port) | |
94 | SCM port; | |
0f2d19dd JB |
95 | { |
96 | #ifndef NOSETBUF | |
97 | #ifndef MSDOS | |
0f2d19dd JB |
98 | #ifndef ultrix |
99 | SCM_SYSCALL (setbuf ((FILE *)SCM_STREAM (port), 0);); | |
100 | #endif | |
101 | #endif | |
0f2d19dd JB |
102 | #endif |
103 | return SCM_UNSPECIFIED; | |
104 | } | |
105 | ||
eadd48de GH |
106 | /* Move ports with the specified file descriptor to new descriptors, |
107 | * reseting the revealed count to 0. | |
108 | * Should be called with SCM_DEFER_INTS active. | |
0f2d19dd | 109 | */ |
1717856b | 110 | |
eadd48de GH |
111 | void |
112 | scm_evict_ports (fd) | |
113 | int fd; | |
0f2d19dd | 114 | { |
eadd48de | 115 | int i; |
0f2d19dd | 116 | |
eadd48de GH |
117 | for (i = 0; i < scm_port_table_size; i++) |
118 | { | |
119 | if (SCM_FPORTP (scm_port_table[i]->port) | |
120 | && fileno ((FILE *)SCM_STREAM (scm_port_table[i]->port)) == fd) | |
121 | { | |
122 | scm_setfileno ((FILE *)SCM_STREAM (scm_port_table[i]->port), dup (fd)); | |
123 | scm_set_port_revealed_x (scm_port_table[i]->port, SCM_MAKINUM (0)); | |
124 | } | |
125 | } | |
126 | } | |
0f2d19dd JB |
127 | |
128 | /* scm_open_file | |
129 | * Return a new port open on a given file. | |
130 | * | |
131 | * The mode string must match the pattern: [rwa+]** which | |
132 | * is interpreted in the usual unix way. | |
133 | * | |
134 | * Return the new port. | |
135 | */ | |
19639113 | 136 | SCM_PROC(s_open_file, "open-file", 2, 0, 0, scm_open_file); |
1717856b | 137 | |
0f2d19dd | 138 | SCM |
19639113 GH |
139 | scm_open_file (filename, modes) |
140 | SCM filename; | |
141 | SCM modes; | |
0f2d19dd | 142 | { |
19639113 | 143 | SCM port; |
0f2d19dd | 144 | FILE *f; |
19639113 GH |
145 | char *file; |
146 | char *mode; | |
147 | ||
148 | SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename, SCM_ARG1, s_open_file); | |
149 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, s_open_file); | |
150 | if (SCM_SUBSTRP (filename)) | |
151 | filename = scm_makfromstr (SCM_ROCHARS (filename), SCM_ROLENGTH (filename), 0); | |
152 | if (SCM_SUBSTRP (modes)) | |
153 | modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0); | |
154 | ||
155 | file = SCM_ROCHARS (filename); | |
156 | mode = SCM_ROCHARS (modes); | |
157 | ||
0f2d19dd JB |
158 | SCM_NEWCELL (port); |
159 | SCM_DEFER_INTS; | |
19639113 | 160 | SCM_SYSCALL (f = fopen (file, mode)); |
0f2d19dd JB |
161 | if (!f) |
162 | { | |
3d8d56df GH |
163 | int en = errno; |
164 | ||
f5bf2977 | 165 | scm_syserror_msg (s_open_file, "%s: %S", |
19639113 GH |
166 | scm_listify (scm_makfrom0str (strerror (errno)), |
167 | filename, | |
3d8d56df GH |
168 | SCM_UNDEFINED), |
169 | en); | |
0f2d19dd JB |
170 | } |
171 | else | |
172 | { | |
173 | struct scm_port_table * pt; | |
19639113 | 174 | |
0f2d19dd JB |
175 | pt = scm_add_to_port_table (port); |
176 | SCM_SETPTAB_ENTRY (port, pt); | |
a6c64c3c | 177 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (mode)); |
7471fb03 | 178 | SCM_SETSTREAM (port, (SCM) f); |
a6c64c3c | 179 | if (SCM_BUF0 & SCM_CAR (port)) |
0f2d19dd | 180 | scm_setbuf0 (port); |
96937708 | 181 | SCM_PTAB_ENTRY (port)->file_name = filename; |
0f2d19dd | 182 | } |
19639113 | 183 | SCM_ALLOW_INTS; |
0f2d19dd JB |
184 | return port; |
185 | } | |
186 | ||
a089567e JB |
187 | |
188 | /* Build a Scheme port from an open stdio port, FILE. | |
189 | MODE indicates whether FILE is open for reading or writing; it uses | |
190 | the same notation as open-file's second argument. | |
191 | If NAME is non-zero, use it as the port's filename. | |
192 | ||
193 | scm_stdio_to_port sets the revealed count for FILE's file | |
194 | descriptor to 1, so that FILE won't be closed when the port object | |
195 | is GC'd. */ | |
196 | SCM | |
197 | scm_stdio_to_port (file, mode, name) | |
198 | FILE *file; | |
199 | char *mode; | |
200 | char *name; | |
201 | { | |
202 | long mode_bits = scm_mode_bits (mode); | |
203 | SCM port; | |
204 | struct scm_port_table * pt; | |
205 | ||
206 | SCM_NEWCELL (port); | |
207 | SCM_DEFER_INTS; | |
208 | { | |
209 | pt = scm_add_to_port_table (port); | |
210 | SCM_SETPTAB_ENTRY (port, pt); | |
211 | SCM_SETCAR (port, (scm_tc16_fport | mode_bits)); | |
7471fb03 | 212 | SCM_SETSTREAM (port, (SCM) file); |
a089567e JB |
213 | if (SCM_BUF0 & SCM_CAR (port)) |
214 | scm_setbuf0 (port); | |
a089567e JB |
215 | SCM_PTAB_ENTRY (port)->file_name = scm_makfrom0str (name); |
216 | } | |
217 | SCM_ALLOW_INTS; | |
218 | scm_set_port_revealed_x (port, SCM_MAKINUM (1)); | |
219 | return port; | |
220 | } | |
221 | ||
222 | ||
1717856b JB |
223 | |
224 | static int prinfport SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
225 | ||
0f2d19dd | 226 | static int |
1717856b | 227 | prinfport (exp, port, pstate) |
0f2d19dd JB |
228 | SCM exp; |
229 | SCM port; | |
1717856b | 230 | scm_print_state *pstate; |
0f2d19dd JB |
231 | { |
232 | SCM name; | |
233 | char * c; | |
234 | if (SCM_CLOSEDP (exp)) | |
235 | { | |
236 | c = "file"; | |
237 | } | |
238 | else | |
239 | { | |
240 | name = SCM_PTAB_ENTRY (exp)->file_name; | |
241 | if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) | |
242 | c = SCM_ROCHARS (name); | |
243 | else | |
244 | c = "file"; | |
245 | } | |
19639113 | 246 | |
0f2d19dd JB |
247 | scm_prinport (exp, port, c); |
248 | return !0; | |
249 | } | |
250 | ||
251 | ||
1717856b JB |
252 | |
253 | static int scm_fgetc SCM_P ((FILE * s)); | |
254 | ||
0f2d19dd JB |
255 | static int |
256 | scm_fgetc (s) | |
257 | FILE * s; | |
0f2d19dd JB |
258 | { |
259 | if (feof (s)) | |
260 | return EOF; | |
261 | else | |
262 | return fgetc (s); | |
263 | } | |
264 | ||
3cb988bd TP |
265 | /* |
266 | * The fgets method must take a port as its argument, rather than | |
267 | * the underlying file handle. The reason is that we also provide | |
268 | * a generic fgets method for ports which can't use fgets(3) (e.g. | |
269 | * string ports). This generic method calls the port's own | |
270 | * fgetc method. In order for it to know how to get that method, | |
271 | * we must pass the original Scheme port object. | |
272 | */ | |
273 | ||
274 | static char * scm_fgets SCM_P ((SCM port)); | |
275 | ||
276 | static char * | |
277 | scm_fgets (port) | |
278 | SCM port; | |
279 | { | |
280 | FILE *f; | |
281 | ||
282 | char *buf = NULL; | |
283 | char *p; /* pointer to current buffer position */ | |
284 | int i = 0; /* index into current buffer position */ | |
285 | int limit = 80; /* current size of buffer */ | |
286 | int lp; | |
287 | ||
288 | f = SCM_STREAM (port); | |
289 | if (feof (f)) | |
290 | return NULL; | |
291 | ||
292 | buf = (char *) scm_must_malloc (limit * sizeof(char), "fgets"); | |
293 | ||
294 | while (1) { | |
295 | p = buf + i; | |
296 | if (fgets (p, limit - i, f) == NULL) { | |
297 | if (i) | |
298 | return buf; | |
299 | scm_must_free (buf); | |
300 | return NULL; | |
301 | } | |
302 | ||
303 | if (strlen(p) < limit - i - 1) | |
304 | return buf; | |
305 | ||
306 | buf = (char *) scm_must_realloc (buf, | |
307 | sizeof(char) * limit, | |
308 | sizeof(char) * limit * 2, | |
309 | "fgets"); | |
310 | ||
311 | i = limit - 1; | |
312 | limit *= 2; | |
313 | } | |
314 | } | |
315 | ||
0f2d19dd | 316 | #ifdef vms |
1717856b JB |
317 | |
318 | static scm_sizet pwrite SCM_P ((char *ptr, scm_sizet size, nitems, FILE *port)); | |
319 | ||
0f2d19dd JB |
320 | static scm_sizet |
321 | pwrite (ptr, size, nitems, port) | |
322 | char *ptr; | |
323 | scm_sizet size, nitems; | |
324 | FILE *port; | |
0f2d19dd JB |
325 | { |
326 | scm_sizet len = size * nitems; | |
327 | scm_sizet i = 0; | |
328 | for (; i < len; i++) | |
329 | putc (ptr[i], port); | |
330 | return len; | |
331 | } | |
332 | ||
333 | #define ffwrite pwrite | |
334 | #else | |
335 | #define ffwrite fwrite | |
336 | #endif | |
337 | ||
338 | \f | |
339 | /* This otherwise pointless code helps some poor | |
340 | * crippled C compilers cope with life. | |
341 | */ | |
1717856b JB |
342 | |
343 | static int local_fclose SCM_P ((FILE *fp)); | |
344 | ||
0f2d19dd JB |
345 | static int |
346 | local_fclose (fp) | |
347 | FILE * fp; | |
348 | { | |
349 | return fclose (fp); | |
350 | } | |
351 | ||
1717856b JB |
352 | static int local_fflush SCM_P ((FILE *fp)); |
353 | ||
0f2d19dd JB |
354 | static int |
355 | local_fflush (fp) | |
356 | FILE * fp; | |
357 | { | |
358 | return fflush (fp); | |
359 | } | |
360 | ||
1717856b JB |
361 | static int local_fputc SCM_P ((int c, FILE *fp)); |
362 | ||
0f2d19dd JB |
363 | static int |
364 | local_fputc (c, fp) | |
365 | int c; | |
366 | FILE * fp; | |
367 | { | |
368 | return fputc (c, fp); | |
369 | } | |
370 | ||
1717856b JB |
371 | static int local_fputs SCM_P ((char *s, FILE *fp)); |
372 | ||
0f2d19dd JB |
373 | static int |
374 | local_fputs (s, fp) | |
375 | char * s; | |
376 | FILE * fp; | |
377 | { | |
378 | return fputs (s, fp); | |
379 | } | |
380 | ||
1717856b JB |
381 | static scm_sizet local_ffwrite SCM_P ((void *ptr, int size, int nitems, FILE *fp)); |
382 | ||
0f2d19dd JB |
383 | static scm_sizet |
384 | local_ffwrite (ptr, size, nitems, fp) | |
385 | void * ptr; | |
386 | int size; | |
387 | int nitems; | |
388 | FILE * fp; | |
389 | { | |
390 | return ffwrite (ptr, size, nitems, fp); | |
391 | } | |
392 | ||
8f29fbd0 JB |
393 | static int |
394 | print_pipe_port (SCM exp, SCM port, scm_print_state *pstate) | |
395 | { | |
396 | scm_prinport (exp, port, "pipe"); | |
397 | return 1; | |
398 | } | |
399 | ||
400 | ||
401 | ||
6a2c4c81 JB |
402 | /* On SunOS, there's no declaration for pclose in the headers, so |
403 | putting it directly in the initializer for scm_pipob doesn't really | |
404 | fly. We could add an extern declaration for it, but then it'll | |
405 | mismatch on some systems that do have a declaration. So we just | |
406 | wrap it up this way. */ | |
407 | static int | |
408 | local_pclose (fp) | |
409 | FILE * fp; | |
410 | { | |
411 | return pclose (fp); | |
412 | } | |
413 | ||
0f2d19dd JB |
414 | \f |
415 | scm_ptobfuns scm_fptob = | |
416 | { | |
417 | scm_mark0, | |
1717856b | 418 | (int (*) SCM_P ((SCM))) local_fclose, |
0f2d19dd JB |
419 | prinfport, |
420 | 0, | |
1717856b JB |
421 | (int (*) SCM_P ((int, SCM))) local_fputc, |
422 | (int (*) SCM_P ((char *, SCM))) local_fputs, | |
423 | (scm_sizet (*) SCM_P ((char *, scm_sizet, scm_sizet, SCM))) local_ffwrite, | |
424 | (int (*) SCM_P ((SCM))) local_fflush, | |
425 | (int (*) SCM_P ((SCM))) scm_fgetc, | |
3cb988bd | 426 | (char * (*) SCM_P ((SCM))) scm_fgets, |
1717856b | 427 | (int (*) SCM_P ((SCM))) local_fclose |
0f2d19dd JB |
428 | }; |
429 | ||
6a2c4c81 | 430 | /* {Pipe ports} */ |
0f2d19dd JB |
431 | scm_ptobfuns scm_pipob = |
432 | { | |
433 | scm_mark0, | |
6a2c4c81 | 434 | (int (*) SCM_P ((SCM))) local_pclose, |
8f29fbd0 | 435 | print_pipe_port, |
0f2d19dd | 436 | 0, |
1717856b JB |
437 | (int (*) SCM_P ((int, SCM))) local_fputc, |
438 | (int (*) SCM_P ((char *, SCM))) local_fputs, | |
439 | (scm_sizet (*) SCM_P ((char *, scm_sizet, scm_sizet, SCM))) local_ffwrite, | |
440 | (int (*) SCM_P ((SCM))) local_fflush, | |
441 | (int (*) SCM_P ((SCM))) scm_fgetc, | |
3cb988bd | 442 | (char * (*) SCM_P ((SCM))) scm_fgets, |
6a2c4c81 | 443 | (int (*) SCM_P ((SCM))) local_pclose |
19468eff | 444 | }; |
0f2d19dd | 445 | |
0f2d19dd JB |
446 | void |
447 | scm_init_fports () | |
0f2d19dd JB |
448 | { |
449 | #include "fports.x" | |
450 | } |