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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 | |
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 | #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 | ||
106 | /* Return the flags that characterize a port based on the mode | |
107 | * string used to open a file for that port. | |
108 | * | |
109 | * See PORT FLAGS in scm.h | |
110 | */ | |
1717856b | 111 | |
0f2d19dd JB |
112 | long |
113 | scm_mode_bits (modes) | |
114 | char *modes; | |
0f2d19dd JB |
115 | { |
116 | return (SCM_OPN | |
117 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
118 | | ( strchr (modes, 'w') | |
119 | || strchr (modes, 'a') | |
120 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
121 | | (strchr (modes, '0') ? SCM_BUF0 : 0)); | |
122 | } | |
123 | ||
124 | ||
125 | /* scm_open_file | |
126 | * Return a new port open on a given file. | |
127 | * | |
128 | * The mode string must match the pattern: [rwa+]** which | |
129 | * is interpreted in the usual unix way. | |
130 | * | |
131 | * Return the new port. | |
132 | */ | |
19639113 | 133 | SCM_PROC(s_open_file, "open-file", 2, 0, 0, scm_open_file); |
1717856b | 134 | |
0f2d19dd | 135 | SCM |
19639113 GH |
136 | scm_open_file (filename, modes) |
137 | SCM filename; | |
138 | SCM modes; | |
0f2d19dd | 139 | { |
19639113 | 140 | SCM port; |
0f2d19dd | 141 | FILE *f; |
19639113 GH |
142 | char *file; |
143 | char *mode; | |
144 | ||
145 | SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename, SCM_ARG1, s_open_file); | |
146 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, s_open_file); | |
147 | if (SCM_SUBSTRP (filename)) | |
148 | filename = scm_makfromstr (SCM_ROCHARS (filename), SCM_ROLENGTH (filename), 0); | |
149 | if (SCM_SUBSTRP (modes)) | |
150 | modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0); | |
151 | ||
152 | file = SCM_ROCHARS (filename); | |
153 | mode = SCM_ROCHARS (modes); | |
154 | ||
0f2d19dd JB |
155 | SCM_NEWCELL (port); |
156 | SCM_DEFER_INTS; | |
19639113 | 157 | SCM_SYSCALL (f = fopen (file, mode)); |
0f2d19dd JB |
158 | if (!f) |
159 | { | |
3d8d56df GH |
160 | int en = errno; |
161 | ||
f5bf2977 | 162 | scm_syserror_msg (s_open_file, "%s: %S", |
19639113 GH |
163 | scm_listify (scm_makfrom0str (strerror (errno)), |
164 | filename, | |
3d8d56df GH |
165 | SCM_UNDEFINED), |
166 | en); | |
0f2d19dd JB |
167 | } |
168 | else | |
169 | { | |
170 | struct scm_port_table * pt; | |
19639113 | 171 | |
0f2d19dd JB |
172 | pt = scm_add_to_port_table (port); |
173 | SCM_SETPTAB_ENTRY (port, pt); | |
a6c64c3c | 174 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (mode)); |
7471fb03 | 175 | SCM_SETSTREAM (port, (SCM) f); |
a6c64c3c | 176 | if (SCM_BUF0 & SCM_CAR (port)) |
0f2d19dd | 177 | scm_setbuf0 (port); |
96937708 | 178 | SCM_PTAB_ENTRY (port)->file_name = filename; |
0f2d19dd | 179 | } |
19639113 | 180 | SCM_ALLOW_INTS; |
0f2d19dd JB |
181 | return port; |
182 | } | |
183 | ||
a089567e JB |
184 | |
185 | /* Build a Scheme port from an open stdio port, FILE. | |
186 | MODE indicates whether FILE is open for reading or writing; it uses | |
187 | the same notation as open-file's second argument. | |
188 | If NAME is non-zero, use it as the port's filename. | |
189 | ||
190 | scm_stdio_to_port sets the revealed count for FILE's file | |
191 | descriptor to 1, so that FILE won't be closed when the port object | |
192 | is GC'd. */ | |
193 | SCM | |
194 | scm_stdio_to_port (file, mode, name) | |
195 | FILE *file; | |
196 | char *mode; | |
197 | char *name; | |
198 | { | |
199 | long mode_bits = scm_mode_bits (mode); | |
200 | SCM port; | |
201 | struct scm_port_table * pt; | |
202 | ||
203 | SCM_NEWCELL (port); | |
204 | SCM_DEFER_INTS; | |
205 | { | |
206 | pt = scm_add_to_port_table (port); | |
207 | SCM_SETPTAB_ENTRY (port, pt); | |
208 | SCM_SETCAR (port, (scm_tc16_fport | mode_bits)); | |
7471fb03 | 209 | SCM_SETSTREAM (port, (SCM) file); |
a089567e JB |
210 | if (SCM_BUF0 & SCM_CAR (port)) |
211 | scm_setbuf0 (port); | |
a089567e JB |
212 | SCM_PTAB_ENTRY (port)->file_name = scm_makfrom0str (name); |
213 | } | |
214 | SCM_ALLOW_INTS; | |
215 | scm_set_port_revealed_x (port, SCM_MAKINUM (1)); | |
216 | return port; | |
217 | } | |
218 | ||
219 | ||
0f2d19dd JB |
220 | /* Return the mode flags from an open port. |
221 | * Some modes such as "append" are only used when opening | |
a089567e | 222 | * a file and are not returned here. */ |
0f2d19dd JB |
223 | |
224 | SCM_PROC(s_port_mode, "port-mode", 1, 0, 0, scm_port_mode); | |
1717856b | 225 | |
0f2d19dd JB |
226 | SCM |
227 | scm_port_mode (port) | |
228 | SCM port; | |
0f2d19dd JB |
229 | { |
230 | char modes[3]; | |
231 | modes[0] = '\0'; | |
232 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_port_mode); | |
233 | if (SCM_CAR (port) & SCM_RDNG) { | |
234 | if (SCM_CAR (port) & SCM_WRTNG) | |
235 | strcpy (modes, "r+"); | |
236 | else | |
237 | strcpy (modes, "r"); | |
238 | } | |
239 | else if (SCM_CAR (port) & SCM_WRTNG) | |
240 | strcpy (modes, "w"); | |
241 | if (SCM_CAR (port) & SCM_BUF0) | |
242 | strcat (modes, "0"); | |
243 | return scm_makfromstr (modes, strlen (modes), 0); | |
244 | } | |
245 | ||
246 | ||
1717856b JB |
247 | |
248 | static int prinfport SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
249 | ||
0f2d19dd | 250 | static int |
1717856b | 251 | prinfport (exp, port, pstate) |
0f2d19dd JB |
252 | SCM exp; |
253 | SCM port; | |
1717856b | 254 | scm_print_state *pstate; |
0f2d19dd JB |
255 | { |
256 | SCM name; | |
257 | char * c; | |
258 | if (SCM_CLOSEDP (exp)) | |
259 | { | |
260 | c = "file"; | |
261 | } | |
262 | else | |
263 | { | |
264 | name = SCM_PTAB_ENTRY (exp)->file_name; | |
265 | if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) | |
266 | c = SCM_ROCHARS (name); | |
267 | else | |
268 | c = "file"; | |
269 | } | |
19639113 | 270 | |
0f2d19dd JB |
271 | scm_prinport (exp, port, c); |
272 | return !0; | |
273 | } | |
274 | ||
275 | ||
1717856b JB |
276 | |
277 | static int scm_fgetc SCM_P ((FILE * s)); | |
278 | ||
0f2d19dd JB |
279 | static int |
280 | scm_fgetc (s) | |
281 | FILE * s; | |
0f2d19dd JB |
282 | { |
283 | if (feof (s)) | |
284 | return EOF; | |
285 | else | |
286 | return fgetc (s); | |
287 | } | |
288 | ||
289 | #ifdef vms | |
1717856b JB |
290 | |
291 | static scm_sizet pwrite SCM_P ((char *ptr, scm_sizet size, nitems, FILE *port)); | |
292 | ||
0f2d19dd JB |
293 | static scm_sizet |
294 | pwrite (ptr, size, nitems, port) | |
295 | char *ptr; | |
296 | scm_sizet size, nitems; | |
297 | FILE *port; | |
0f2d19dd JB |
298 | { |
299 | scm_sizet len = size * nitems; | |
300 | scm_sizet i = 0; | |
301 | for (; i < len; i++) | |
302 | putc (ptr[i], port); | |
303 | return len; | |
304 | } | |
305 | ||
306 | #define ffwrite pwrite | |
307 | #else | |
308 | #define ffwrite fwrite | |
309 | #endif | |
310 | ||
311 | \f | |
312 | /* This otherwise pointless code helps some poor | |
313 | * crippled C compilers cope with life. | |
314 | */ | |
1717856b JB |
315 | |
316 | static int local_fclose SCM_P ((FILE *fp)); | |
317 | ||
0f2d19dd JB |
318 | static int |
319 | local_fclose (fp) | |
320 | FILE * fp; | |
321 | { | |
322 | return fclose (fp); | |
323 | } | |
324 | ||
1717856b JB |
325 | static int local_fflush SCM_P ((FILE *fp)); |
326 | ||
0f2d19dd JB |
327 | static int |
328 | local_fflush (fp) | |
329 | FILE * fp; | |
330 | { | |
331 | return fflush (fp); | |
332 | } | |
333 | ||
1717856b JB |
334 | static int local_fputc SCM_P ((int c, FILE *fp)); |
335 | ||
0f2d19dd JB |
336 | static int |
337 | local_fputc (c, fp) | |
338 | int c; | |
339 | FILE * fp; | |
340 | { | |
341 | return fputc (c, fp); | |
342 | } | |
343 | ||
1717856b JB |
344 | static int local_fputs SCM_P ((char *s, FILE *fp)); |
345 | ||
0f2d19dd JB |
346 | static int |
347 | local_fputs (s, fp) | |
348 | char * s; | |
349 | FILE * fp; | |
350 | { | |
351 | return fputs (s, fp); | |
352 | } | |
353 | ||
1717856b JB |
354 | static scm_sizet local_ffwrite SCM_P ((void *ptr, int size, int nitems, FILE *fp)); |
355 | ||
0f2d19dd JB |
356 | static scm_sizet |
357 | local_ffwrite (ptr, size, nitems, fp) | |
358 | void * ptr; | |
359 | int size; | |
360 | int nitems; | |
361 | FILE * fp; | |
362 | { | |
363 | return ffwrite (ptr, size, nitems, fp); | |
364 | } | |
365 | ||
366 | \f | |
367 | scm_ptobfuns scm_fptob = | |
368 | { | |
369 | scm_mark0, | |
1717856b | 370 | (int (*) SCM_P ((SCM))) local_fclose, |
0f2d19dd JB |
371 | prinfport, |
372 | 0, | |
1717856b JB |
373 | (int (*) SCM_P ((int, SCM))) local_fputc, |
374 | (int (*) SCM_P ((char *, SCM))) local_fputs, | |
375 | (scm_sizet (*) SCM_P ((char *, scm_sizet, scm_sizet, SCM))) local_ffwrite, | |
376 | (int (*) SCM_P ((SCM))) local_fflush, | |
377 | (int (*) SCM_P ((SCM))) scm_fgetc, | |
378 | (int (*) SCM_P ((SCM))) local_fclose | |
0f2d19dd JB |
379 | }; |
380 | ||
381 | /* {Pipe ports} | |
382 | */ | |
383 | scm_ptobfuns scm_pipob = | |
384 | { | |
385 | scm_mark0, | |
386 | 0, /* replaced by pclose in scm_init_ioext() */ | |
387 | 0, /* replaced by prinpipe in scm_init_ioext() */ | |
388 | 0, | |
1717856b JB |
389 | (int (*) SCM_P ((int, SCM))) local_fputc, |
390 | (int (*) SCM_P ((char *, SCM))) local_fputs, | |
391 | (scm_sizet (*) SCM_P ((char *, scm_sizet, scm_sizet, SCM))) local_ffwrite, | |
392 | (int (*) SCM_P ((SCM))) local_fflush, | |
393 | (int (*) SCM_P ((SCM))) scm_fgetc, | |
0f2d19dd JB |
394 | 0 |
395 | }; /* replaced by pclose in scm_init_ioext() */ | |
396 | ||
0f2d19dd JB |
397 | void |
398 | scm_init_fports () | |
0f2d19dd JB |
399 | { |
400 | #include "fports.x" | |
401 | } |