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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 */ | |
1717856b | 91 | |
0f2d19dd JB |
92 | SCM |
93 | scm_setbuf0 (port) | |
94 | SCM port; | |
0f2d19dd JB |
95 | { |
96 | #ifndef NOSETBUF | |
97 | #ifndef MSDOS | |
98 | #ifdef FIONREAD | |
99 | #ifndef ultrix | |
100 | SCM_SYSCALL (setbuf ((FILE *)SCM_STREAM (port), 0);); | |
101 | #endif | |
102 | #endif | |
103 | #endif | |
104 | #endif | |
105 | return SCM_UNSPECIFIED; | |
106 | } | |
107 | ||
108 | /* Return the flags that characterize a port based on the mode | |
109 | * string used to open a file for that port. | |
110 | * | |
111 | * See PORT FLAGS in scm.h | |
112 | */ | |
1717856b | 113 | |
0f2d19dd JB |
114 | long |
115 | scm_mode_bits (modes) | |
116 | char *modes; | |
0f2d19dd JB |
117 | { |
118 | return (SCM_OPN | |
119 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
120 | | ( strchr (modes, 'w') | |
121 | || strchr (modes, 'a') | |
122 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
123 | | (strchr (modes, '0') ? SCM_BUF0 : 0)); | |
124 | } | |
125 | ||
126 | ||
127 | /* scm_open_file | |
128 | * Return a new port open on a given file. | |
129 | * | |
130 | * The mode string must match the pattern: [rwa+]** which | |
131 | * is interpreted in the usual unix way. | |
132 | * | |
133 | * Return the new port. | |
134 | */ | |
19639113 | 135 | SCM_PROC(s_open_file, "open-file", 2, 0, 0, scm_open_file); |
1717856b | 136 | |
0f2d19dd | 137 | SCM |
19639113 GH |
138 | scm_open_file (filename, modes) |
139 | SCM filename; | |
140 | SCM modes; | |
0f2d19dd | 141 | { |
19639113 | 142 | SCM port; |
0f2d19dd | 143 | FILE *f; |
19639113 GH |
144 | char *file; |
145 | char *mode; | |
146 | ||
147 | SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename, SCM_ARG1, s_open_file); | |
148 | SCM_ASSERT (SCM_NIMP (modes) && SCM_ROSTRINGP (modes), modes, SCM_ARG2, s_open_file); | |
149 | if (SCM_SUBSTRP (filename)) | |
150 | filename = scm_makfromstr (SCM_ROCHARS (filename), SCM_ROLENGTH (filename), 0); | |
151 | if (SCM_SUBSTRP (modes)) | |
152 | modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0); | |
153 | ||
154 | file = SCM_ROCHARS (filename); | |
155 | mode = SCM_ROCHARS (modes); | |
156 | ||
0f2d19dd JB |
157 | SCM_NEWCELL (port); |
158 | SCM_DEFER_INTS; | |
19639113 | 159 | SCM_SYSCALL (f = fopen (file, mode)); |
0f2d19dd JB |
160 | if (!f) |
161 | { | |
f5bf2977 | 162 | scm_syserror_msg (s_open_file, "%s: %S", |
19639113 GH |
163 | scm_listify (scm_makfrom0str (strerror (errno)), |
164 | filename, | |
165 | SCM_UNDEFINED)); | |
0f2d19dd JB |
166 | } |
167 | else | |
168 | { | |
169 | struct scm_port_table * pt; | |
19639113 | 170 | |
0f2d19dd JB |
171 | pt = scm_add_to_port_table (port); |
172 | SCM_SETPTAB_ENTRY (port, pt); | |
a6c64c3c MD |
173 | SCM_SETCAR (port, scm_tc16_fport | scm_mode_bits (mode)); |
174 | if (SCM_BUF0 & SCM_CAR (port)) | |
0f2d19dd | 175 | scm_setbuf0 (port); |
a6c64c3c | 176 | SCM_SETSTREAM (port, (SCM) f); |
96937708 | 177 | SCM_PTAB_ENTRY (port)->file_name = filename; |
0f2d19dd | 178 | } |
19639113 | 179 | SCM_ALLOW_INTS; |
0f2d19dd JB |
180 | return port; |
181 | } | |
182 | ||
183 | /* Return the mode flags from an open port. | |
184 | * Some modes such as "append" are only used when opening | |
185 | * a file and are not returned here. | |
186 | */ | |
187 | ||
188 | SCM_PROC(s_port_mode, "port-mode", 1, 0, 0, scm_port_mode); | |
1717856b | 189 | |
0f2d19dd JB |
190 | SCM |
191 | scm_port_mode (port) | |
192 | SCM port; | |
0f2d19dd JB |
193 | { |
194 | char modes[3]; | |
195 | modes[0] = '\0'; | |
196 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_port_mode); | |
197 | if (SCM_CAR (port) & SCM_RDNG) { | |
198 | if (SCM_CAR (port) & SCM_WRTNG) | |
199 | strcpy (modes, "r+"); | |
200 | else | |
201 | strcpy (modes, "r"); | |
202 | } | |
203 | else if (SCM_CAR (port) & SCM_WRTNG) | |
204 | strcpy (modes, "w"); | |
205 | if (SCM_CAR (port) & SCM_BUF0) | |
206 | strcat (modes, "0"); | |
207 | return scm_makfromstr (modes, strlen (modes), 0); | |
208 | } | |
209 | ||
210 | ||
1717856b JB |
211 | |
212 | static int prinfport SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
213 | ||
0f2d19dd | 214 | static int |
1717856b | 215 | prinfport (exp, port, pstate) |
0f2d19dd JB |
216 | SCM exp; |
217 | SCM port; | |
1717856b | 218 | scm_print_state *pstate; |
0f2d19dd JB |
219 | { |
220 | SCM name; | |
221 | char * c; | |
222 | if (SCM_CLOSEDP (exp)) | |
223 | { | |
224 | c = "file"; | |
225 | } | |
226 | else | |
227 | { | |
228 | name = SCM_PTAB_ENTRY (exp)->file_name; | |
229 | if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) | |
230 | c = SCM_ROCHARS (name); | |
231 | else | |
232 | c = "file"; | |
233 | } | |
19639113 | 234 | |
0f2d19dd JB |
235 | scm_prinport (exp, port, c); |
236 | return !0; | |
237 | } | |
238 | ||
239 | ||
1717856b JB |
240 | |
241 | static int scm_fgetc SCM_P ((FILE * s)); | |
242 | ||
0f2d19dd JB |
243 | static int |
244 | scm_fgetc (s) | |
245 | FILE * s; | |
0f2d19dd JB |
246 | { |
247 | if (feof (s)) | |
248 | return EOF; | |
249 | else | |
250 | return fgetc (s); | |
251 | } | |
252 | ||
253 | #ifdef vms | |
1717856b JB |
254 | |
255 | static scm_sizet pwrite SCM_P ((char *ptr, scm_sizet size, nitems, FILE *port)); | |
256 | ||
0f2d19dd JB |
257 | static scm_sizet |
258 | pwrite (ptr, size, nitems, port) | |
259 | char *ptr; | |
260 | scm_sizet size, nitems; | |
261 | FILE *port; | |
0f2d19dd JB |
262 | { |
263 | scm_sizet len = size * nitems; | |
264 | scm_sizet i = 0; | |
265 | for (; i < len; i++) | |
266 | putc (ptr[i], port); | |
267 | return len; | |
268 | } | |
269 | ||
270 | #define ffwrite pwrite | |
271 | #else | |
272 | #define ffwrite fwrite | |
273 | #endif | |
274 | ||
275 | \f | |
276 | /* This otherwise pointless code helps some poor | |
277 | * crippled C compilers cope with life. | |
278 | */ | |
1717856b JB |
279 | |
280 | static int local_fclose SCM_P ((FILE *fp)); | |
281 | ||
0f2d19dd JB |
282 | static int |
283 | local_fclose (fp) | |
284 | FILE * fp; | |
285 | { | |
286 | return fclose (fp); | |
287 | } | |
288 | ||
1717856b JB |
289 | static int local_fflush SCM_P ((FILE *fp)); |
290 | ||
0f2d19dd JB |
291 | static int |
292 | local_fflush (fp) | |
293 | FILE * fp; | |
294 | { | |
295 | return fflush (fp); | |
296 | } | |
297 | ||
1717856b JB |
298 | static int local_fputc SCM_P ((int c, FILE *fp)); |
299 | ||
0f2d19dd JB |
300 | static int |
301 | local_fputc (c, fp) | |
302 | int c; | |
303 | FILE * fp; | |
304 | { | |
305 | return fputc (c, fp); | |
306 | } | |
307 | ||
1717856b JB |
308 | static int local_fputs SCM_P ((char *s, FILE *fp)); |
309 | ||
0f2d19dd JB |
310 | static int |
311 | local_fputs (s, fp) | |
312 | char * s; | |
313 | FILE * fp; | |
314 | { | |
315 | return fputs (s, fp); | |
316 | } | |
317 | ||
1717856b JB |
318 | static scm_sizet local_ffwrite SCM_P ((void *ptr, int size, int nitems, FILE *fp)); |
319 | ||
0f2d19dd JB |
320 | static scm_sizet |
321 | local_ffwrite (ptr, size, nitems, fp) | |
322 | void * ptr; | |
323 | int size; | |
324 | int nitems; | |
325 | FILE * fp; | |
326 | { | |
327 | return ffwrite (ptr, size, nitems, fp); | |
328 | } | |
329 | ||
330 | \f | |
331 | scm_ptobfuns scm_fptob = | |
332 | { | |
333 | scm_mark0, | |
1717856b | 334 | (int (*) SCM_P ((SCM))) local_fclose, |
0f2d19dd JB |
335 | prinfport, |
336 | 0, | |
1717856b JB |
337 | (int (*) SCM_P ((int, SCM))) local_fputc, |
338 | (int (*) SCM_P ((char *, SCM))) local_fputs, | |
339 | (scm_sizet (*) SCM_P ((char *, scm_sizet, scm_sizet, SCM))) local_ffwrite, | |
340 | (int (*) SCM_P ((SCM))) local_fflush, | |
341 | (int (*) SCM_P ((SCM))) scm_fgetc, | |
342 | (int (*) SCM_P ((SCM))) local_fclose | |
0f2d19dd JB |
343 | }; |
344 | ||
345 | /* {Pipe ports} | |
346 | */ | |
347 | scm_ptobfuns scm_pipob = | |
348 | { | |
349 | scm_mark0, | |
350 | 0, /* replaced by pclose in scm_init_ioext() */ | |
351 | 0, /* replaced by prinpipe in scm_init_ioext() */ | |
352 | 0, | |
1717856b JB |
353 | (int (*) SCM_P ((int, SCM))) local_fputc, |
354 | (int (*) SCM_P ((char *, SCM))) local_fputs, | |
355 | (scm_sizet (*) SCM_P ((char *, scm_sizet, scm_sizet, SCM))) local_ffwrite, | |
356 | (int (*) SCM_P ((SCM))) local_fflush, | |
357 | (int (*) SCM_P ((SCM))) scm_fgetc, | |
0f2d19dd JB |
358 | 0 |
359 | }; /* replaced by pclose in scm_init_ioext() */ | |
360 | ||
0f2d19dd JB |
361 | void |
362 | scm_init_fports () | |
0f2d19dd JB |
363 | { |
364 | #include "fports.x" | |
365 | } |