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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
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 */ | |
91 | #ifdef __STDC__ | |
92 | SCM | |
93 | scm_setbuf0 (SCM port) | |
94 | #else | |
95 | SCM | |
96 | scm_setbuf0 (port) | |
97 | SCM port; | |
98 | #endif | |
99 | { | |
100 | #ifndef NOSETBUF | |
101 | #ifndef MSDOS | |
102 | #ifdef FIONREAD | |
103 | #ifndef ultrix | |
104 | SCM_SYSCALL (setbuf ((FILE *)SCM_STREAM (port), 0);); | |
105 | #endif | |
106 | #endif | |
107 | #endif | |
108 | #endif | |
109 | return SCM_UNSPECIFIED; | |
110 | } | |
111 | ||
112 | /* Return the flags that characterize a port based on the mode | |
113 | * string used to open a file for that port. | |
114 | * | |
115 | * See PORT FLAGS in scm.h | |
116 | */ | |
117 | #ifdef __STDC__ | |
118 | long | |
119 | scm_mode_bits (char *modes) | |
120 | #else | |
121 | long | |
122 | scm_mode_bits (modes) | |
123 | char *modes; | |
124 | #endif | |
125 | { | |
126 | return (SCM_OPN | |
127 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
128 | | ( strchr (modes, 'w') | |
129 | || strchr (modes, 'a') | |
130 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
131 | | (strchr (modes, '0') ? SCM_BUF0 : 0)); | |
132 | } | |
133 | ||
134 | ||
135 | /* scm_open_file | |
136 | * Return a new port open on a given file. | |
137 | * | |
138 | * The mode string must match the pattern: [rwa+]** which | |
139 | * is interpreted in the usual unix way. | |
140 | * | |
141 | * Return the new port. | |
142 | */ | |
143 | ||
144 | #ifdef __STDC__ | |
145 | SCM | |
146 | scm_mkfile (char * name, char * modes) | |
147 | #else | |
148 | SCM | |
149 | scm_mkfile (name, modes) | |
150 | char * name; | |
151 | char * modes; | |
152 | #endif | |
153 | { | |
154 | register SCM port; | |
155 | FILE *f; | |
156 | SCM_NEWCELL (port); | |
157 | SCM_DEFER_INTS; | |
158 | SCM_SYSCALL (f = fopen (name, modes)); | |
159 | if (!f) | |
160 | { | |
161 | SCM_ALLOW_INTS; | |
162 | port = SCM_BOOL_F; | |
163 | } | |
164 | else | |
165 | { | |
166 | struct scm_port_table * pt; | |
167 | pt = scm_add_to_port_table (port); | |
168 | SCM_SETPTAB_ENTRY (port, pt); | |
169 | if (SCM_BUF0 & (SCM_CAR (port) = scm_tc16_fport | scm_mode_bits (modes))) | |
170 | scm_setbuf0 (port); | |
171 | SCM_SETSTREAM (port, (SCM)f); | |
172 | SCM_PTAB_ENTRY (port)->file_name = scm_makfrom0str (name); | |
173 | SCM_ALLOW_INTS; | |
174 | } | |
175 | return port; | |
176 | } | |
177 | ||
178 | SCM_PROC(s_open_file, "open-file", 2, 0, 0, scm_open_file); | |
179 | #ifdef __STDC__ | |
180 | SCM | |
181 | scm_open_file (SCM filename, SCM modes) | |
182 | #else | |
183 | SCM | |
184 | scm_open_file (filename, modes) | |
185 | SCM filename; | |
186 | SCM modes; | |
187 | #endif | |
188 | { | |
189 | SCM port; | |
190 | SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename, SCM_ARG1, s_open_file); | |
191 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, s_open_file); | |
192 | if (SCM_SUBSTRP (filename)) | |
193 | filename = scm_makfromstr (SCM_ROCHARS (filename), SCM_ROLENGTH (filename), 0); | |
194 | if (SCM_SUBSTRP (modes)) | |
195 | modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0); | |
196 | port = scm_mkfile (SCM_ROCHARS (filename), SCM_ROCHARS (modes)); | |
8b13c6b3 GH |
197 | |
198 | if (port == SCM_BOOL_F) { | |
52859adf GH |
199 | scm_syserror_msg (s_open_file, "%S: %S", |
200 | scm_listify (scm_makfrom0str (strerror (errno)), | |
201 | filename, | |
202 | SCM_UNDEFINED)); | |
8b13c6b3 | 203 | /* Force the compiler to keep filename and modes alive. */ |
0f2d19dd | 204 | scm_cons (filename, modes); |
8b13c6b3 | 205 | } |
0f2d19dd JB |
206 | return port; |
207 | } | |
208 | ||
209 | /* Return the mode flags from an open port. | |
210 | * Some modes such as "append" are only used when opening | |
211 | * a file and are not returned here. | |
212 | */ | |
213 | ||
214 | SCM_PROC(s_port_mode, "port-mode", 1, 0, 0, scm_port_mode); | |
215 | #ifdef __STDC__ | |
216 | SCM | |
217 | scm_port_mode (SCM port) | |
218 | #else | |
219 | SCM | |
220 | scm_port_mode (port) | |
221 | SCM port; | |
222 | #endif | |
223 | { | |
224 | char modes[3]; | |
225 | modes[0] = '\0'; | |
226 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_port_mode); | |
227 | if (SCM_CAR (port) & SCM_RDNG) { | |
228 | if (SCM_CAR (port) & SCM_WRTNG) | |
229 | strcpy (modes, "r+"); | |
230 | else | |
231 | strcpy (modes, "r"); | |
232 | } | |
233 | else if (SCM_CAR (port) & SCM_WRTNG) | |
234 | strcpy (modes, "w"); | |
235 | if (SCM_CAR (port) & SCM_BUF0) | |
236 | strcat (modes, "0"); | |
237 | return scm_makfromstr (modes, strlen (modes), 0); | |
238 | } | |
239 | ||
240 | ||
241 | #ifdef __STDC__ | |
242 | static int | |
243 | prinfport (SCM exp, SCM port, int writing) | |
244 | #else | |
245 | static int | |
246 | prinfport (exp, port, writing) | |
247 | SCM exp; | |
248 | SCM port; | |
249 | int writing; | |
250 | #endif | |
251 | { | |
252 | SCM name; | |
253 | char * c; | |
254 | if (SCM_CLOSEDP (exp)) | |
255 | { | |
256 | c = "file"; | |
257 | } | |
258 | else | |
259 | { | |
260 | name = SCM_PTAB_ENTRY (exp)->file_name; | |
261 | if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) | |
262 | c = SCM_ROCHARS (name); | |
263 | else | |
264 | c = "file"; | |
265 | } | |
266 | ||
267 | scm_prinport (exp, port, c); | |
268 | return !0; | |
269 | } | |
270 | ||
271 | ||
272 | #ifdef __STDC__ | |
273 | static int | |
274 | scm_fgetc (FILE * s) | |
275 | #else | |
276 | static int | |
277 | scm_fgetc (s) | |
278 | FILE * s; | |
279 | #endif | |
280 | { | |
281 | if (feof (s)) | |
282 | return EOF; | |
283 | else | |
284 | return fgetc (s); | |
285 | } | |
286 | ||
287 | #ifdef vms | |
288 | #ifdef __STDC__ | |
289 | static scm_sizet | |
290 | pwrite (char *ptr, scm_sizet size, nitems, FILE *port) | |
291 | #else | |
292 | static scm_sizet | |
293 | pwrite (ptr, size, nitems, port) | |
294 | char *ptr; | |
295 | scm_sizet size, nitems; | |
296 | FILE *port; | |
297 | #endif | |
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 | */ | |
315 | static int | |
316 | local_fclose (fp) | |
317 | FILE * fp; | |
318 | { | |
319 | return fclose (fp); | |
320 | } | |
321 | ||
322 | static int | |
323 | local_fflush (fp) | |
324 | FILE * fp; | |
325 | { | |
326 | return fflush (fp); | |
327 | } | |
328 | ||
329 | static int | |
330 | local_fputc (c, fp) | |
331 | int c; | |
332 | FILE * fp; | |
333 | { | |
334 | return fputc (c, fp); | |
335 | } | |
336 | ||
337 | static int | |
338 | local_fputs (s, fp) | |
339 | char * s; | |
340 | FILE * fp; | |
341 | { | |
342 | return fputs (s, fp); | |
343 | } | |
344 | ||
345 | static scm_sizet | |
346 | local_ffwrite (ptr, size, nitems, fp) | |
347 | void * ptr; | |
348 | int size; | |
349 | int nitems; | |
350 | FILE * fp; | |
351 | { | |
352 | return ffwrite (ptr, size, nitems, fp); | |
353 | } | |
354 | ||
355 | \f | |
356 | scm_ptobfuns scm_fptob = | |
357 | { | |
358 | scm_mark0, | |
359 | local_fclose, | |
360 | prinfport, | |
361 | 0, | |
362 | local_fputc, | |
363 | local_fputs, | |
364 | local_ffwrite, | |
365 | local_fflush, | |
366 | scm_fgetc, | |
367 | local_fclose | |
368 | }; | |
369 | ||
370 | /* {Pipe ports} | |
371 | */ | |
372 | scm_ptobfuns scm_pipob = | |
373 | { | |
374 | scm_mark0, | |
375 | 0, /* replaced by pclose in scm_init_ioext() */ | |
376 | 0, /* replaced by prinpipe in scm_init_ioext() */ | |
377 | 0, | |
378 | local_fputc, | |
379 | local_fputs, | |
380 | local_ffwrite, | |
381 | local_fflush, | |
382 | scm_fgetc, | |
383 | 0 | |
384 | }; /* replaced by pclose in scm_init_ioext() */ | |
385 | ||
386 | ||
387 | #ifdef __STDC__ | |
388 | void | |
389 | scm_init_fports (void) | |
390 | #else | |
391 | void | |
392 | scm_init_fports () | |
393 | #endif | |
394 | { | |
395 | #include "fports.x" | |
396 | } | |
397 |