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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" | |
45 | #ifdef HAVE_UNISTD_H | |
46 | #include <unistd.h> | |
47 | #else | |
48 | char *ttyname (); | |
49 | char *tmpnam (); | |
50 | scm_sizet fwrite (); | |
51 | #endif | |
52 | #ifdef HAVE_STRING_H | |
53 | #include "string.h" | |
54 | #endif | |
55 | ||
56 | ||
57 | #ifdef __IBMC__ | |
58 | #include <io.h> | |
59 | #include <direct.h> | |
60 | #define ttyname(x) "CON:" | |
61 | #else | |
62 | #ifndef MSDOS | |
63 | #ifndef ultrix | |
64 | #ifndef vms | |
65 | #ifdef _DCC | |
66 | #include <ioctl.h> | |
67 | #define setbuf(stream, buf) setvbuf(stream, buf, _IONBF, 0) | |
68 | #else | |
69 | #ifdef MWC | |
70 | #include <sys/io.h> | |
71 | #else | |
72 | #ifndef THINK_C | |
73 | #ifndef ARM_ULIB | |
74 | #include <sys/ioctl.h> | |
75 | #endif | |
76 | #endif | |
77 | #endif | |
78 | #endif | |
79 | #endif | |
80 | #endif | |
81 | #endif | |
82 | #endif | |
83 | \f | |
84 | ||
85 | /* {Ports - file ports} | |
86 | * | |
87 | */ | |
88 | ||
89 | /* should be called with SCM_DEFER_INTS active */ | |
90 | #ifdef __STDC__ | |
91 | SCM | |
92 | scm_setbuf0 (SCM port) | |
93 | #else | |
94 | SCM | |
95 | scm_setbuf0 (port) | |
96 | SCM port; | |
97 | #endif | |
98 | { | |
99 | #ifndef NOSETBUF | |
100 | #ifndef MSDOS | |
101 | #ifdef FIONREAD | |
102 | #ifndef ultrix | |
103 | SCM_SYSCALL (setbuf ((FILE *)SCM_STREAM (port), 0);); | |
104 | #endif | |
105 | #endif | |
106 | #endif | |
107 | #endif | |
108 | return SCM_UNSPECIFIED; | |
109 | } | |
110 | ||
111 | /* Return the flags that characterize a port based on the mode | |
112 | * string used to open a file for that port. | |
113 | * | |
114 | * See PORT FLAGS in scm.h | |
115 | */ | |
116 | #ifdef __STDC__ | |
117 | long | |
118 | scm_mode_bits (char *modes) | |
119 | #else | |
120 | long | |
121 | scm_mode_bits (modes) | |
122 | char *modes; | |
123 | #endif | |
124 | { | |
125 | return (SCM_OPN | |
126 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
127 | | ( strchr (modes, 'w') | |
128 | || strchr (modes, 'a') | |
129 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
130 | | (strchr (modes, '0') ? SCM_BUF0 : 0)); | |
131 | } | |
132 | ||
133 | ||
134 | /* scm_open_file | |
135 | * Return a new port open on a given file. | |
136 | * | |
137 | * The mode string must match the pattern: [rwa+]** which | |
138 | * is interpreted in the usual unix way. | |
139 | * | |
140 | * Return the new port. | |
141 | */ | |
142 | ||
143 | #ifdef __STDC__ | |
144 | SCM | |
145 | scm_mkfile (char * name, char * modes) | |
146 | #else | |
147 | SCM | |
148 | scm_mkfile (name, modes) | |
149 | char * name; | |
150 | char * modes; | |
151 | #endif | |
152 | { | |
153 | register SCM port; | |
154 | FILE *f; | |
155 | SCM_NEWCELL (port); | |
156 | SCM_DEFER_INTS; | |
157 | SCM_SYSCALL (f = fopen (name, modes)); | |
158 | if (!f) | |
159 | { | |
160 | SCM_ALLOW_INTS; | |
161 | port = SCM_BOOL_F; | |
162 | } | |
163 | else | |
164 | { | |
165 | struct scm_port_table * pt; | |
166 | pt = scm_add_to_port_table (port); | |
167 | SCM_SETPTAB_ENTRY (port, pt); | |
168 | if (SCM_BUF0 & (SCM_CAR (port) = scm_tc16_fport | scm_mode_bits (modes))) | |
169 | scm_setbuf0 (port); | |
170 | SCM_SETSTREAM (port, (SCM)f); | |
171 | SCM_PTAB_ENTRY (port)->file_name = scm_makfrom0str (name); | |
172 | SCM_ALLOW_INTS; | |
173 | } | |
174 | return port; | |
175 | } | |
176 | ||
177 | SCM_PROC(s_open_file, "open-file", 2, 0, 0, scm_open_file); | |
178 | #ifdef __STDC__ | |
179 | SCM | |
180 | scm_open_file (SCM filename, SCM modes) | |
181 | #else | |
182 | SCM | |
183 | scm_open_file (filename, modes) | |
184 | SCM filename; | |
185 | SCM modes; | |
186 | #endif | |
187 | { | |
188 | SCM port; | |
189 | SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename, SCM_ARG1, s_open_file); | |
190 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, s_open_file); | |
191 | if (SCM_SUBSTRP (filename)) | |
192 | filename = scm_makfromstr (SCM_ROCHARS (filename), SCM_ROLENGTH (filename), 0); | |
193 | if (SCM_SUBSTRP (modes)) | |
194 | modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0); | |
195 | port = scm_mkfile (SCM_ROCHARS (filename), SCM_ROCHARS (modes)); | |
8b13c6b3 GH |
196 | |
197 | if (port == SCM_BOOL_F) { | |
198 | SCM_SYSERROR (s_open_file); | |
199 | /* Force the compiler to keep filename and modes alive. */ | |
0f2d19dd | 200 | scm_cons (filename, modes); |
8b13c6b3 | 201 | } |
0f2d19dd JB |
202 | return port; |
203 | } | |
204 | ||
205 | /* Return the mode flags from an open port. | |
206 | * Some modes such as "append" are only used when opening | |
207 | * a file and are not returned here. | |
208 | */ | |
209 | ||
210 | SCM_PROC(s_port_mode, "port-mode", 1, 0, 0, scm_port_mode); | |
211 | #ifdef __STDC__ | |
212 | SCM | |
213 | scm_port_mode (SCM port) | |
214 | #else | |
215 | SCM | |
216 | scm_port_mode (port) | |
217 | SCM port; | |
218 | #endif | |
219 | { | |
220 | char modes[3]; | |
221 | modes[0] = '\0'; | |
222 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_port_mode); | |
223 | if (SCM_CAR (port) & SCM_RDNG) { | |
224 | if (SCM_CAR (port) & SCM_WRTNG) | |
225 | strcpy (modes, "r+"); | |
226 | else | |
227 | strcpy (modes, "r"); | |
228 | } | |
229 | else if (SCM_CAR (port) & SCM_WRTNG) | |
230 | strcpy (modes, "w"); | |
231 | if (SCM_CAR (port) & SCM_BUF0) | |
232 | strcat (modes, "0"); | |
233 | return scm_makfromstr (modes, strlen (modes), 0); | |
234 | } | |
235 | ||
236 | ||
237 | #ifdef __STDC__ | |
238 | static int | |
239 | prinfport (SCM exp, SCM port, int writing) | |
240 | #else | |
241 | static int | |
242 | prinfport (exp, port, writing) | |
243 | SCM exp; | |
244 | SCM port; | |
245 | int writing; | |
246 | #endif | |
247 | { | |
248 | SCM name; | |
249 | char * c; | |
250 | if (SCM_CLOSEDP (exp)) | |
251 | { | |
252 | c = "file"; | |
253 | } | |
254 | else | |
255 | { | |
256 | name = SCM_PTAB_ENTRY (exp)->file_name; | |
257 | if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) | |
258 | c = SCM_ROCHARS (name); | |
259 | else | |
260 | c = "file"; | |
261 | } | |
262 | ||
263 | scm_prinport (exp, port, c); | |
264 | return !0; | |
265 | } | |
266 | ||
267 | ||
268 | #ifdef __STDC__ | |
269 | static int | |
270 | scm_fgetc (FILE * s) | |
271 | #else | |
272 | static int | |
273 | scm_fgetc (s) | |
274 | FILE * s; | |
275 | #endif | |
276 | { | |
277 | if (feof (s)) | |
278 | return EOF; | |
279 | else | |
280 | return fgetc (s); | |
281 | } | |
282 | ||
283 | #ifdef vms | |
284 | #ifdef __STDC__ | |
285 | static scm_sizet | |
286 | pwrite (char *ptr, scm_sizet size, nitems, FILE *port) | |
287 | #else | |
288 | static scm_sizet | |
289 | pwrite (ptr, size, nitems, port) | |
290 | char *ptr; | |
291 | scm_sizet size, nitems; | |
292 | FILE *port; | |
293 | #endif | |
294 | { | |
295 | scm_sizet len = size * nitems; | |
296 | scm_sizet i = 0; | |
297 | for (; i < len; i++) | |
298 | putc (ptr[i], port); | |
299 | return len; | |
300 | } | |
301 | ||
302 | #define ffwrite pwrite | |
303 | #else | |
304 | #define ffwrite fwrite | |
305 | #endif | |
306 | ||
307 | \f | |
308 | /* This otherwise pointless code helps some poor | |
309 | * crippled C compilers cope with life. | |
310 | */ | |
311 | static int | |
312 | local_fclose (fp) | |
313 | FILE * fp; | |
314 | { | |
315 | return fclose (fp); | |
316 | } | |
317 | ||
318 | static int | |
319 | local_fflush (fp) | |
320 | FILE * fp; | |
321 | { | |
322 | return fflush (fp); | |
323 | } | |
324 | ||
325 | static int | |
326 | local_fputc (c, fp) | |
327 | int c; | |
328 | FILE * fp; | |
329 | { | |
330 | return fputc (c, fp); | |
331 | } | |
332 | ||
333 | static int | |
334 | local_fputs (s, fp) | |
335 | char * s; | |
336 | FILE * fp; | |
337 | { | |
338 | return fputs (s, fp); | |
339 | } | |
340 | ||
341 | static scm_sizet | |
342 | local_ffwrite (ptr, size, nitems, fp) | |
343 | void * ptr; | |
344 | int size; | |
345 | int nitems; | |
346 | FILE * fp; | |
347 | { | |
348 | return ffwrite (ptr, size, nitems, fp); | |
349 | } | |
350 | ||
351 | \f | |
352 | scm_ptobfuns scm_fptob = | |
353 | { | |
354 | scm_mark0, | |
355 | local_fclose, | |
356 | prinfport, | |
357 | 0, | |
358 | local_fputc, | |
359 | local_fputs, | |
360 | local_ffwrite, | |
361 | local_fflush, | |
362 | scm_fgetc, | |
363 | local_fclose | |
364 | }; | |
365 | ||
366 | /* {Pipe ports} | |
367 | */ | |
368 | scm_ptobfuns scm_pipob = | |
369 | { | |
370 | scm_mark0, | |
371 | 0, /* replaced by pclose in scm_init_ioext() */ | |
372 | 0, /* replaced by prinpipe in scm_init_ioext() */ | |
373 | 0, | |
374 | local_fputc, | |
375 | local_fputs, | |
376 | local_ffwrite, | |
377 | local_fflush, | |
378 | scm_fgetc, | |
379 | 0 | |
380 | }; /* replaced by pclose in scm_init_ioext() */ | |
381 | ||
382 | ||
383 | #ifdef __STDC__ | |
384 | void | |
385 | scm_init_fports (void) | |
386 | #else | |
387 | void | |
388 | scm_init_fports () | |
389 | #endif | |
390 | { | |
391 | #include "fports.x" | |
392 | } | |
393 |