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1e598865 | 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 | #include <stdio.h> | |
43 | #include "_scm.h" | |
20e6290e JB |
44 | #include "genio.h" |
45 | #include "chars.h" | |
0f2d19dd | 46 | |
20e6290e | 47 | #include "markers.h" |
5d09ff4e | 48 | #include "filesys.h" |
20e6290e JB |
49 | #include "fports.h" |
50 | #include "strports.h" | |
51 | #include "vports.h" | |
89ea5b7c | 52 | #include "kw.h" |
20e6290e JB |
53 | |
54 | #include "ports.h" | |
0f2d19dd JB |
55 | |
56 | #ifdef HAVE_MALLOC_H | |
95b88819 | 57 | #include <malloc.h> |
0f2d19dd JB |
58 | #endif |
59 | ||
60 | #ifdef HAVE_UNISTD_H | |
61 | #include <unistd.h> | |
62 | #endif | |
63 | ||
95b88819 GH |
64 | #ifdef HAVE_SYS_IOCTL_H |
65 | #include <sys/ioctl.h> | |
66 | #endif | |
0f2d19dd JB |
67 | \f |
68 | ||
69 | ||
70 | /* scm_ptobs scm_numptob | |
71 | * implement a dynamicly resized array of ptob records. | |
72 | * Indexes into this table are used when generating type | |
73 | * tags for smobjects (if you know a tag you can get an index and conversely). | |
74 | */ | |
75 | scm_ptobfuns *scm_ptobs; | |
76 | scm_sizet scm_numptob; | |
77 | ||
1cc91f1b | 78 | |
0f2d19dd JB |
79 | SCM |
80 | scm_markstream (ptr) | |
81 | SCM ptr; | |
0f2d19dd JB |
82 | { |
83 | int openp; | |
84 | if (SCM_GC8MARKP (ptr)) | |
85 | return SCM_BOOL_F; | |
86 | openp = SCM_CAR (ptr) & SCM_OPN; | |
87 | SCM_SETGC8MARK (ptr); | |
88 | if (openp) | |
89 | return SCM_STREAM (ptr); | |
90 | else | |
91 | return SCM_BOOL_F; | |
92 | } | |
93 | ||
94 | ||
1cc91f1b | 95 | |
0f2d19dd JB |
96 | long |
97 | scm_newptob (ptob) | |
98 | scm_ptobfuns *ptob; | |
0f2d19dd JB |
99 | { |
100 | char *tmp; | |
101 | if (255 <= scm_numptob) | |
102 | goto ptoberr; | |
103 | SCM_DEFER_INTS; | |
104 | SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_ptobs, (1 + scm_numptob) * sizeof (scm_ptobfuns))); | |
105 | if (tmp) | |
106 | { | |
107 | scm_ptobs = (scm_ptobfuns *) tmp; | |
108 | scm_ptobs[scm_numptob].mark = ptob->mark; | |
109 | scm_ptobs[scm_numptob].free = ptob->free; | |
110 | scm_ptobs[scm_numptob].print = ptob->print; | |
111 | scm_ptobs[scm_numptob].equalp = ptob->equalp; | |
112 | scm_ptobs[scm_numptob].fputc = ptob->fputc; | |
113 | scm_ptobs[scm_numptob].fputs = ptob->fputs; | |
114 | scm_ptobs[scm_numptob].fwrite = ptob->fwrite; | |
115 | scm_ptobs[scm_numptob].fflush = ptob->fflush; | |
116 | scm_ptobs[scm_numptob].fgetc = ptob->fgetc; | |
3cb988bd | 117 | scm_ptobs[scm_numptob].fgets = ptob->fgets; |
0f2d19dd JB |
118 | scm_ptobs[scm_numptob].fclose = ptob->fclose; |
119 | scm_numptob++; | |
120 | } | |
121 | SCM_ALLOW_INTS; | |
122 | if (!tmp) | |
123 | ptoberr:scm_wta (SCM_MAKINUM ((long) scm_numptob), (char *) SCM_NALLOC, "newptob"); | |
124 | return scm_tc7_port + (scm_numptob - 1) * 256; | |
125 | } | |
126 | ||
127 | \f | |
128 | /* internal SCM call */ | |
1cc91f1b | 129 | |
0f2d19dd JB |
130 | void |
131 | scm_fflush (port) | |
132 | SCM port; | |
0f2d19dd JB |
133 | { |
134 | scm_sizet i = SCM_PTOBNUM (port); | |
135 | (scm_ptobs[i].fflush) (SCM_STREAM (port)); | |
136 | } | |
137 | ||
138 | \f | |
139 | ||
44493941 | 140 | SCM_PROC(s_char_ready_p, "char-ready?", 0, 1, 0, scm_char_ready_p); |
1cc91f1b | 141 | |
0f2d19dd JB |
142 | SCM |
143 | scm_char_ready_p (port) | |
144 | SCM port; | |
0f2d19dd JB |
145 | { |
146 | if (SCM_UNBNDP (port)) | |
147 | port = scm_cur_inp; | |
148 | else | |
149 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_char_ready_p); | |
150 | if (SCM_CRDYP (port) || !SCM_FPORTP (port)) | |
151 | return SCM_BOOL_T; | |
5d09ff4e MD |
152 | return (scm_input_waiting_p ((FILE *) SCM_STREAM (port), s_char_ready_p) |
153 | ? SCM_BOOL_T | |
154 | : SCM_BOOL_F); | |
0f2d19dd | 155 | } |
0f2d19dd JB |
156 | |
157 | ||
158 | \f | |
159 | ||
160 | ||
161 | /* {Standard Ports} | |
162 | */ | |
163 | SCM_PROC(s_current_input_port, "current-input-port", 0, 0, 0, scm_current_input_port); | |
1cc91f1b | 164 | |
0f2d19dd JB |
165 | SCM |
166 | scm_current_input_port () | |
0f2d19dd JB |
167 | { |
168 | return scm_cur_inp; | |
169 | } | |
170 | ||
171 | SCM_PROC(s_current_output_port, "current-output-port", 0, 0, 0, scm_current_output_port); | |
1cc91f1b | 172 | |
0f2d19dd JB |
173 | SCM |
174 | scm_current_output_port () | |
0f2d19dd JB |
175 | { |
176 | return scm_cur_outp; | |
177 | } | |
178 | ||
179 | SCM_PROC(s_current_error_port, "current-error-port", 0, 0, 0, scm_current_error_port); | |
1cc91f1b | 180 | |
0f2d19dd JB |
181 | SCM |
182 | scm_current_error_port () | |
0f2d19dd JB |
183 | { |
184 | return scm_cur_errp; | |
185 | } | |
186 | ||
187 | SCM_PROC(s_set_current_input_port, "set-current-input-port", 1, 0, 0, scm_set_current_input_port); | |
1cc91f1b | 188 | |
0f2d19dd JB |
189 | SCM |
190 | scm_set_current_input_port (port) | |
191 | SCM port; | |
0f2d19dd JB |
192 | { |
193 | SCM oinp = scm_cur_inp; | |
194 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_set_current_input_port); | |
195 | scm_cur_inp = port; | |
196 | return oinp; | |
197 | } | |
198 | ||
199 | ||
200 | SCM_PROC(s_set_current_output_port, "set-current-output-port", 1, 0, 0, scm_set_current_output_port); | |
1cc91f1b | 201 | |
0f2d19dd JB |
202 | SCM |
203 | scm_set_current_output_port (port) | |
204 | SCM port; | |
0f2d19dd JB |
205 | { |
206 | SCM ooutp = scm_cur_outp; | |
78446828 | 207 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
208 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_output_port); |
209 | scm_cur_outp = port; | |
210 | return ooutp; | |
211 | } | |
212 | ||
213 | ||
214 | SCM_PROC(s_set_current_error_port, "set-current-error-port", 1, 0, 0, scm_set_current_error_port); | |
1cc91f1b | 215 | |
0f2d19dd JB |
216 | SCM |
217 | scm_set_current_error_port (port) | |
218 | SCM port; | |
0f2d19dd JB |
219 | { |
220 | SCM oerrp = scm_cur_errp; | |
78446828 | 221 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
222 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_error_port); |
223 | scm_cur_errp = port; | |
224 | return oerrp; | |
225 | } | |
226 | ||
227 | \f | |
228 | ||
229 | /* {Ports - in general} | |
230 | * | |
231 | */ | |
232 | ||
233 | /* Array of open ports, required for reliable MOVE->FDES etc. */ | |
234 | struct scm_port_table **scm_port_table; | |
235 | ||
236 | int scm_port_table_size = 0; /* Number of ports in scm_port_table. */ | |
237 | int scm_port_table_room = 20; /* Size of the array. */ | |
238 | ||
239 | /* Add a port to the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 240 | |
0f2d19dd JB |
241 | struct scm_port_table * |
242 | scm_add_to_port_table (port) | |
243 | SCM port; | |
0f2d19dd JB |
244 | { |
245 | if (scm_port_table_size == scm_port_table_room) | |
246 | { | |
247 | scm_port_table = ((struct scm_port_table **) | |
248 | realloc ((char *) scm_port_table, | |
67fe060e GH |
249 | (scm_sizet) (sizeof (struct scm_port_table *) |
250 | * scm_port_table_room * 2))); | |
0f2d19dd JB |
251 | /* !!! error checking */ |
252 | scm_port_table_room *= 2; | |
253 | } | |
254 | scm_port_table[scm_port_table_size] = ((struct scm_port_table *) | |
255 | scm_must_malloc (sizeof (struct scm_port_table), | |
256 | "system port table")); | |
257 | scm_port_table[scm_port_table_size]->port = port; | |
258 | scm_port_table[scm_port_table_size]->revealed = 0; | |
259 | scm_port_table[scm_port_table_size]->stream = 0; | |
ebf7394e | 260 | scm_port_table[scm_port_table_size]->file_name = SCM_BOOL_F; |
d0defdf3 | 261 | scm_port_table[scm_port_table_size]->line_number = 0; |
0f2d19dd | 262 | scm_port_table[scm_port_table_size]->column_number = 0; |
0f2d19dd JB |
263 | return scm_port_table[scm_port_table_size++]; |
264 | } | |
265 | ||
266 | /* Remove a port from the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 267 | |
0f2d19dd JB |
268 | void |
269 | scm_remove_from_port_table (port) | |
270 | SCM port; | |
0f2d19dd JB |
271 | { |
272 | int i = 0; | |
273 | while (scm_port_table[i]->port != port) | |
274 | { | |
275 | i++; | |
276 | /* Error if not found: too violent? May occur in GC. */ | |
277 | if (i >= scm_port_table_size) | |
278 | scm_wta (port, "Port not in table", "scm_remove_from_port_table"); | |
279 | } | |
280 | scm_must_free ((char *)scm_port_table[i]); | |
281 | scm_mallocated -= sizeof (*scm_port_table[i]); | |
282 | scm_port_table[i] = scm_port_table[scm_port_table_size - 1]; | |
283 | SCM_SETPTAB_ENTRY (port, 0); | |
284 | scm_port_table_size--; | |
285 | } | |
286 | ||
fea6b4ea | 287 | #ifdef GUILE_DEBUG |
0f2d19dd JB |
288 | /* Undocumented functions for debugging. */ |
289 | /* Return the number of ports in the table. */ | |
1cc91f1b | 290 | |
1146b6cd | 291 | SCM_PROC(s_pt_size, "pt-size", 0, 0, 0, scm_pt_size); |
0f2d19dd JB |
292 | SCM |
293 | scm_pt_size () | |
0f2d19dd JB |
294 | { |
295 | return SCM_MAKINUM (scm_port_table_size); | |
296 | } | |
297 | ||
298 | /* Return the ith member of the port table. */ | |
1146b6cd | 299 | SCM_PROC(s_pt_member, "pt-member", 1, 0, 0, scm_pt_member); |
0f2d19dd JB |
300 | SCM |
301 | scm_pt_member (member) | |
302 | SCM member; | |
0f2d19dd JB |
303 | { |
304 | int i; | |
305 | SCM_ASSERT (SCM_INUMP (member), member, SCM_ARG1, s_pt_member); | |
306 | i = SCM_INUM (member); | |
307 | if (i < 0 || i >= scm_port_table_size) | |
308 | return SCM_BOOL_F; | |
309 | else | |
310 | return scm_port_table[i]->port; | |
311 | } | |
312 | #endif | |
313 | ||
314 | ||
8b13c6b3 GH |
315 | /* Find a port in the table and return its revealed count. |
316 | Also used by the garbage collector. | |
0f2d19dd | 317 | */ |
1cc91f1b | 318 | |
0f2d19dd JB |
319 | int |
320 | scm_revealed_count (port) | |
321 | SCM port; | |
0f2d19dd JB |
322 | { |
323 | return SCM_REVEALED(port); | |
324 | } | |
325 | ||
326 | ||
327 | ||
328 | /* Return the revealed count for a port. */ | |
329 | ||
330 | SCM_PROC(s_port_revealed, "port-revealed", 1, 0, 0, scm_port_revealed); | |
1cc91f1b | 331 | |
0f2d19dd JB |
332 | SCM |
333 | scm_port_revealed (port) | |
334 | SCM port; | |
0f2d19dd | 335 | { |
78446828 | 336 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd | 337 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_port_revealed); |
8b13c6b3 | 338 | return SCM_MAKINUM (scm_revealed_count (port)); |
0f2d19dd JB |
339 | } |
340 | ||
341 | /* Set the revealed count for a port. */ | |
342 | SCM_PROC(s_set_port_revealed_x, "set-port-revealed!", 2, 0, 0, scm_set_port_revealed_x); | |
1cc91f1b | 343 | |
0f2d19dd JB |
344 | SCM |
345 | scm_set_port_revealed_x (port, rcount) | |
346 | SCM port; | |
347 | SCM rcount; | |
0f2d19dd | 348 | { |
78446828 | 349 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
350 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_set_port_revealed_x); |
351 | SCM_ASSERT (SCM_INUMP (rcount), rcount, SCM_ARG2, s_set_port_revealed_x); | |
352 | SCM_DEFER_INTS; | |
353 | SCM_REVEALED (port) = SCM_INUM (rcount); | |
354 | SCM_ALLOW_INTS; | |
8b13c6b3 | 355 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
356 | } |
357 | ||
eadd48de GH |
358 | /* Return the flags that characterize a port based on the mode |
359 | * string used to open a file for that port. | |
360 | * | |
361 | * See PORT FLAGS in scm.h | |
362 | */ | |
363 | ||
364 | long | |
365 | scm_mode_bits (modes) | |
366 | char *modes; | |
367 | { | |
368 | return (SCM_OPN | |
369 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
370 | | ( strchr (modes, 'w') | |
371 | || strchr (modes, 'a') | |
372 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
373 | | (strchr (modes, '0') ? SCM_BUF0 : 0)); | |
374 | } | |
375 | ||
376 | ||
377 | /* Return the mode flags from an open port. | |
378 | * Some modes such as "append" are only used when opening | |
379 | * a file and are not returned here. */ | |
380 | ||
381 | SCM_PROC(s_port_mode, "port-mode", 1, 0, 0, scm_port_mode); | |
382 | ||
383 | SCM | |
384 | scm_port_mode (port) | |
385 | SCM port; | |
386 | { | |
387 | char modes[3]; | |
388 | modes[0] = '\0'; | |
78446828 MV |
389 | |
390 | port = SCM_COERCE_OUTPORT (port); | |
eadd48de GH |
391 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_port_mode); |
392 | if (SCM_CAR (port) & SCM_RDNG) { | |
393 | if (SCM_CAR (port) & SCM_WRTNG) | |
394 | strcpy (modes, "r+"); | |
395 | else | |
396 | strcpy (modes, "r"); | |
397 | } | |
398 | else if (SCM_CAR (port) & SCM_WRTNG) | |
399 | strcpy (modes, "w"); | |
400 | if (SCM_CAR (port) & SCM_BUF0) | |
401 | strcat (modes, "0"); | |
402 | return scm_makfromstr (modes, strlen (modes), 0); | |
403 | } | |
404 | ||
405 | ||
0f2d19dd JB |
406 | /* scm_close_port |
407 | * Call the close operation on a port object. | |
eadd48de | 408 | * see also scm_close. |
0f2d19dd JB |
409 | */ |
410 | SCM_PROC(s_close_port, "close-port", 1, 0, 0, scm_close_port); | |
1cc91f1b | 411 | |
0f2d19dd JB |
412 | SCM |
413 | scm_close_port (port) | |
414 | SCM port; | |
0f2d19dd JB |
415 | { |
416 | scm_sizet i; | |
eadd48de GH |
417 | int rv; |
418 | ||
78446828 MV |
419 | port = SCM_COERCE_OUTPORT (port); |
420 | ||
341eaef0 | 421 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, |
3c1750f3 | 422 | s_close_port); |
0f2d19dd | 423 | if (SCM_CLOSEDP (port)) |
eadd48de | 424 | return SCM_BOOL_F; |
0f2d19dd JB |
425 | i = SCM_PTOBNUM (port); |
426 | SCM_DEFER_INTS; | |
427 | if (scm_ptobs[i].fclose) | |
eadd48de GH |
428 | { |
429 | SCM_SYSCALL (rv = (scm_ptobs[i].fclose) (SCM_STREAM (port))); | |
430 | /* ports with a closed file descriptor can be reclosed without error. */ | |
431 | if (rv < 0 && errno != EBADF) | |
432 | scm_syserror (s_close_port); | |
433 | } | |
434 | else | |
435 | rv = 0; | |
0f2d19dd | 436 | scm_remove_from_port_table (port); |
898a256f | 437 | SCM_SETAND_CAR (port, ~SCM_OPN); |
0f2d19dd | 438 | SCM_ALLOW_INTS; |
eadd48de | 439 | return (rv < 0) ? SCM_BOOL_F : SCM_BOOL_T; |
0f2d19dd JB |
440 | } |
441 | ||
442 | SCM_PROC(s_close_all_ports_except, "close-all-ports-except", 0, 0, 1, scm_close_all_ports_except); | |
1cc91f1b | 443 | |
0f2d19dd JB |
444 | SCM |
445 | scm_close_all_ports_except (ports) | |
446 | SCM ports; | |
0f2d19dd JB |
447 | { |
448 | int i = 0; | |
449 | SCM_ASSERT (SCM_NIMP (ports) && SCM_CONSP (ports), ports, SCM_ARG1, s_close_all_ports_except); | |
450 | SCM_DEFER_INTS; | |
451 | while (i < scm_port_table_size) | |
452 | { | |
453 | SCM thisport = scm_port_table[i]->port; | |
454 | int found = 0; | |
455 | SCM ports_ptr = ports; | |
456 | ||
457 | while (SCM_NNULLP (ports_ptr)) | |
458 | { | |
78446828 | 459 | SCM port = SCM_COERCE_OUTPORT (SCM_CAR (ports_ptr)); |
0f2d19dd JB |
460 | if (i == 0) |
461 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_close_all_ports_except); | |
462 | if (port == thisport) | |
463 | found = 1; | |
464 | ports_ptr = SCM_CDR (ports_ptr); | |
465 | } | |
466 | if (found) | |
467 | i++; | |
468 | else | |
469 | /* i is not to be incremented here. */ | |
470 | scm_close_port (thisport); | |
471 | } | |
472 | SCM_ALLOW_INTS; | |
473 | return SCM_UNSPECIFIED; | |
474 | } | |
475 | ||
476 | SCM_PROC(s_input_port_p, "input-port?", 1, 0, 0, scm_input_port_p); | |
1cc91f1b | 477 | |
0f2d19dd JB |
478 | SCM |
479 | scm_input_port_p (x) | |
480 | SCM x; | |
0f2d19dd JB |
481 | { |
482 | if (SCM_IMP (x)) | |
483 | return SCM_BOOL_F; | |
484 | return SCM_INPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
485 | } | |
486 | ||
487 | SCM_PROC(s_output_port_p, "output-port?", 1, 0, 0, scm_output_port_p); | |
1cc91f1b | 488 | |
0f2d19dd JB |
489 | SCM |
490 | scm_output_port_p (x) | |
491 | SCM x; | |
0f2d19dd JB |
492 | { |
493 | if (SCM_IMP (x)) | |
494 | return SCM_BOOL_F; | |
495 | return SCM_OUTPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
496 | } | |
497 | ||
498 | ||
499 | SCM_PROC(s_eof_object_p, "eof-object?", 1, 0, 0, scm_eof_object_p); | |
1cc91f1b | 500 | |
0f2d19dd JB |
501 | SCM |
502 | scm_eof_object_p (x) | |
503 | SCM x; | |
0f2d19dd | 504 | { |
0c32d76c | 505 | return SCM_EOF_OBJECT_P (x) ? SCM_BOOL_T : SCM_BOOL_F; |
0f2d19dd JB |
506 | } |
507 | ||
508 | SCM_PROC(s_force_output, "force-output", 0, 1, 0, scm_force_output); | |
1cc91f1b | 509 | |
0f2d19dd JB |
510 | SCM |
511 | scm_force_output (port) | |
512 | SCM port; | |
0f2d19dd JB |
513 | { |
514 | if (SCM_UNBNDP (port)) | |
515 | port = scm_cur_outp; | |
516 | else | |
78446828 MV |
517 | { |
518 | port = SCM_COERCE_OUTPORT (port); | |
519 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_force_output); | |
520 | } | |
0f2d19dd JB |
521 | { |
522 | scm_sizet i = SCM_PTOBNUM (port); | |
523 | SCM_SYSCALL ((scm_ptobs[i].fflush) (SCM_STREAM (port))); | |
524 | return SCM_UNSPECIFIED; | |
525 | } | |
526 | } | |
527 | ||
9c29ac66 | 528 | SCM_PROC (s_flush_all_ports, "flush-all-ports", 0, 0, 0, scm_flush_all_ports); |
89ea5b7c GH |
529 | SCM |
530 | scm_flush_all_ports (void) | |
531 | { | |
532 | int i; | |
533 | ||
534 | for (i = 0; i < scm_port_table_size; i++) | |
535 | { | |
536 | SCM port = scm_port_table[i]->port; | |
537 | if (SCM_OPOUTPORTP (port)) | |
538 | { | |
539 | scm_sizet ptob = SCM_PTOBNUM (port); | |
540 | (scm_ptobs[ptob].fflush) (SCM_STREAM (port)); | |
541 | } | |
542 | } | |
543 | return SCM_UNSPECIFIED; | |
544 | } | |
0f2d19dd JB |
545 | |
546 | SCM_PROC(s_read_char, "read-char", 0, 1, 0, scm_read_char); | |
1cc91f1b | 547 | |
0f2d19dd JB |
548 | SCM |
549 | scm_read_char (port) | |
550 | SCM port; | |
0f2d19dd JB |
551 | { |
552 | int c; | |
553 | if (SCM_UNBNDP (port)) | |
334341aa | 554 | port = scm_cur_inp; |
0f2d19dd JB |
555 | else |
556 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_read_char); | |
b7f3516f | 557 | c = scm_getc (port); |
0f2d19dd JB |
558 | if (EOF == c) |
559 | return SCM_EOF_VAL; | |
560 | return SCM_MAKICHR (c); | |
561 | } | |
562 | ||
563 | ||
564 | SCM_PROC(s_peek_char, "peek-char", 0, 1, 0, scm_peek_char); | |
1cc91f1b | 565 | |
0f2d19dd JB |
566 | SCM |
567 | scm_peek_char (port) | |
568 | SCM port; | |
0f2d19dd JB |
569 | { |
570 | int c; | |
571 | if (SCM_UNBNDP (port)) | |
572 | port = scm_cur_inp; | |
573 | else | |
574 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_peek_char); | |
b7f3516f | 575 | c = scm_getc (port); |
0f2d19dd JB |
576 | if (EOF == c) |
577 | return SCM_EOF_VAL; | |
b7f3516f | 578 | scm_ungetc (c, port); |
0f2d19dd JB |
579 | return SCM_MAKICHR (c); |
580 | } | |
581 | ||
3cb988bd TP |
582 | /* |
583 | * A generic fgets method. We supply this method so that ports which | |
584 | * can't use fgets(3) (like string ports or soft ports) can still use | |
585 | * line-based i/o. The generic method calls the port's own fgetc method | |
586 | * for input. It should be possible to write a more efficient | |
587 | * method for any given port representation -- this is supplied just | |
588 | * to ensure that you don't have to. | |
589 | */ | |
590 | ||
848f2a01 | 591 | char * scm_generic_fgets SCM_P ((SCM port, int *len)); |
3cb988bd TP |
592 | |
593 | char * | |
848f2a01 | 594 | scm_generic_fgets (port, len) |
3cb988bd | 595 | SCM port; |
848f2a01 | 596 | int *len; |
3cb988bd TP |
597 | { |
598 | SCM f = SCM_STREAM (port); | |
599 | scm_sizet p = SCM_PTOBNUM (port); | |
600 | ||
848f2a01 | 601 | char *buf; |
3cb988bd TP |
602 | int limit = 80; /* current size of buffer */ |
603 | int c; | |
604 | ||
848f2a01 | 605 | /* FIXME: It would be nice to be able to check for EOF before anything. */ |
3cb988bd | 606 | |
848f2a01 | 607 | *len = 0; |
3e2043c4 TP |
608 | buf = (char *) malloc (limit * sizeof(char)); |
609 | ||
610 | /* If a char has been pushed onto the port with scm_ungetc, | |
611 | read that first. */ | |
612 | if (SCM_CRDYP (port)) | |
613 | { | |
848f2a01 | 614 | buf[*len] = SCM_CGETUN (port); |
3e2043c4 | 615 | SCM_CLRDY (port); |
848f2a01 | 616 | if (buf[(*len)++] == '\n') |
3e2043c4 | 617 | { |
848f2a01 | 618 | buf[*len] = '\0'; |
3e2043c4 TP |
619 | return buf; |
620 | } | |
621 | } | |
3cb988bd TP |
622 | |
623 | while (1) { | |
848f2a01 | 624 | if (*len >= limit-1) |
3cb988bd | 625 | { |
3e2043c4 | 626 | buf = (char *) realloc (buf, sizeof(char) * limit * 2); |
3cb988bd TP |
627 | limit *= 2; |
628 | } | |
629 | ||
630 | c = (scm_ptobs[p].fgetc) (f); | |
631 | if (c != EOF) | |
848f2a01 | 632 | buf[(*len)++] = c; |
3cb988bd TP |
633 | |
634 | if (c == EOF || c == '\n') | |
635 | { | |
848f2a01 | 636 | if (*len) |
3cb988bd | 637 | { |
848f2a01 | 638 | buf[*len] = '\0'; |
3cb988bd TP |
639 | return buf; |
640 | } | |
3e2043c4 | 641 | free (buf); |
3cb988bd TP |
642 | return NULL; |
643 | } | |
644 | } | |
645 | } | |
646 | ||
0f2d19dd | 647 | SCM_PROC (s_unread_char, "unread-char", 2, 0, 0, scm_unread_char); |
1cc91f1b | 648 | |
0f2d19dd JB |
649 | SCM |
650 | scm_unread_char (cobj, port) | |
651 | SCM cobj; | |
652 | SCM port; | |
0f2d19dd JB |
653 | { |
654 | int c; | |
655 | ||
656 | SCM_ASSERT (SCM_ICHRP (cobj), cobj, SCM_ARG1, s_unread_char); | |
657 | ||
658 | if (SCM_UNBNDP (port)) | |
659 | port = scm_cur_inp; | |
660 | else | |
661 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG2, s_unread_char); | |
662 | ||
663 | ||
664 | c = SCM_ICHR (cobj); | |
665 | ||
b7f3516f | 666 | scm_ungetc (c, port); |
0f2d19dd JB |
667 | return cobj; |
668 | } | |
669 | ||
360fc44c | 670 | SCM_PROC (s_port_line, "port-line", 1, 0, 0, scm_port_line); |
1cc91f1b | 671 | |
0f2d19dd | 672 | SCM |
d14af9f2 | 673 | scm_port_line (port) |
0f2d19dd | 674 | SCM port; |
0f2d19dd | 675 | { |
78446828 | 676 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
677 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
678 | port, | |
679 | SCM_ARG1, | |
680 | s_port_line); | |
681 | return SCM_MAKINUM (SCM_LINUM (port)); | |
0f2d19dd JB |
682 | } |
683 | ||
360fc44c | 684 | SCM_PROC (s_set_port_line_x, "set-port-line!", 2, 0, 0, scm_set_port_line_x); |
d043d8c2 MD |
685 | |
686 | SCM | |
687 | scm_set_port_line_x (port, line) | |
688 | SCM port; | |
689 | SCM line; | |
690 | { | |
360fc44c MD |
691 | port = SCM_COERCE_OUTPORT (port); |
692 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
693 | port, | |
694 | SCM_ARG1, | |
695 | s_set_port_line_x); | |
696 | SCM_ASSERT (SCM_INUMP (line), line, SCM_ARG2, s_set_port_line_x); | |
d043d8c2 MD |
697 | return SCM_PTAB_ENTRY (port)->line_number = SCM_INUM (line); |
698 | } | |
699 | ||
360fc44c | 700 | SCM_PROC (s_port_column, "port-column", 1, 0, 0, scm_port_column); |
1cc91f1b | 701 | |
0f2d19dd | 702 | SCM |
d14af9f2 | 703 | scm_port_column (port) |
0f2d19dd | 704 | SCM port; |
0f2d19dd | 705 | { |
78446828 | 706 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
707 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
708 | port, | |
709 | SCM_ARG1, | |
710 | s_port_column); | |
711 | return SCM_MAKINUM (SCM_COL (port)); | |
0f2d19dd JB |
712 | } |
713 | ||
360fc44c | 714 | SCM_PROC (s_set_port_column_x, "set-port-column!", 2, 0, 0, scm_set_port_column_x); |
d043d8c2 MD |
715 | |
716 | SCM | |
717 | scm_set_port_column_x (port, column) | |
718 | SCM port; | |
719 | SCM column; | |
720 | { | |
360fc44c MD |
721 | port = SCM_COERCE_OUTPORT (port); |
722 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
723 | port, | |
724 | SCM_ARG1, | |
725 | s_set_port_column_x); | |
726 | SCM_ASSERT (SCM_INUMP (column), column, SCM_ARG2, s_set_port_column_x); | |
d043d8c2 MD |
727 | return SCM_PTAB_ENTRY (port)->column_number = SCM_INUM (column); |
728 | } | |
729 | ||
360fc44c | 730 | SCM_PROC (s_port_filename, "port-filename", 1, 0, 0, scm_port_filename); |
1cc91f1b | 731 | |
0f2d19dd | 732 | SCM |
d14af9f2 | 733 | scm_port_filename (port) |
0f2d19dd | 734 | SCM port; |
0f2d19dd | 735 | { |
78446828 | 736 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
737 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
738 | port, | |
739 | SCM_ARG1, | |
740 | s_port_filename); | |
741 | return SCM_PTAB_ENTRY (port)->file_name; | |
0f2d19dd JB |
742 | } |
743 | ||
360fc44c | 744 | SCM_PROC (s_set_port_filename_x, "set-port-filename!", 2, 0, 0, scm_set_port_filename_x); |
1cc91f1b | 745 | |
d14af9f2 MD |
746 | SCM |
747 | scm_set_port_filename_x (port, filename) | |
748 | SCM port; | |
749 | SCM filename; | |
d14af9f2 | 750 | { |
360fc44c MD |
751 | port = SCM_COERCE_OUTPORT (port); |
752 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
753 | port, | |
754 | SCM_ARG1, | |
755 | s_set_port_filename_x); | |
756 | /* We allow the user to set the filename to whatever he likes. */ | |
d14af9f2 MD |
757 | return SCM_PTAB_ENTRY (port)->file_name = filename; |
758 | } | |
759 | ||
0f2d19dd JB |
760 | #ifndef ttyname |
761 | extern char * ttyname(); | |
762 | #endif | |
763 | ||
1cc91f1b | 764 | |
0f2d19dd JB |
765 | void |
766 | scm_prinport (exp, port, type) | |
767 | SCM exp; | |
768 | SCM port; | |
769 | char *type; | |
0f2d19dd | 770 | { |
b7f3516f | 771 | scm_puts ("#<", port); |
0f2d19dd | 772 | if (SCM_CLOSEDP (exp)) |
b7f3516f | 773 | scm_puts ("closed: ", port); |
0f2d19dd JB |
774 | else |
775 | { | |
776 | if (SCM_RDNG & SCM_CAR (exp)) | |
b7f3516f | 777 | scm_puts ("input: ", port); |
0f2d19dd | 778 | if (SCM_WRTNG & SCM_CAR (exp)) |
b7f3516f | 779 | scm_puts ("output: ", port); |
0f2d19dd | 780 | } |
b7f3516f TT |
781 | scm_puts (type, port); |
782 | scm_putc (' ', port); | |
0f2d19dd JB |
783 | #ifndef MSDOS |
784 | #ifndef __EMX__ | |
785 | #ifndef _DCC | |
786 | #ifndef AMIGA | |
787 | #ifndef THINK_C | |
788 | if (SCM_OPENP (exp) && scm_tc16_fport == SCM_TYP16 (exp) && isatty (fileno ((FILE *)SCM_STREAM (exp)))) | |
b7f3516f | 789 | scm_puts (ttyname (fileno ((FILE *)SCM_STREAM (exp))), port); |
0f2d19dd JB |
790 | else |
791 | #endif | |
792 | #endif | |
793 | #endif | |
794 | #endif | |
795 | #endif | |
796 | if (SCM_OPFPORTP (exp)) | |
797 | scm_intprint ((long) fileno ((FILE *)SCM_STREAM (exp)), 10, port); | |
798 | else | |
799 | scm_intprint (SCM_CDR (exp), 16, port); | |
b7f3516f | 800 | scm_putc ('>', port); |
0f2d19dd JB |
801 | } |
802 | ||
1cc91f1b | 803 | |
0f2d19dd JB |
804 | void |
805 | scm_ports_prehistory () | |
0f2d19dd JB |
806 | { |
807 | scm_numptob = 0; | |
808 | scm_ptobs = (scm_ptobfuns *) malloc (sizeof (scm_ptobfuns)); | |
809 | ||
810 | /* WARNING: These scm_newptob calls must be done in this order. | |
811 | * They must agree with the port declarations in tags.h. | |
812 | */ | |
813 | /* scm_tc16_fport = */ scm_newptob (&scm_fptob); | |
814 | /* scm_tc16_pipe = */ scm_newptob (&scm_pipob); | |
815 | /* scm_tc16_strport = */ scm_newptob (&scm_stptob); | |
816 | /* scm_tc16_sfport = */ scm_newptob (&scm_sfptob); | |
817 | } | |
818 | \f | |
819 | ||
820 | \f | |
821 | /* {Void Ports} | |
822 | */ | |
823 | ||
824 | int scm_tc16_void_port = 0; | |
825 | ||
826 | static int | |
38cb0e9c | 827 | print_void_port (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd JB |
828 | { |
829 | scm_prinport (exp, port, "void"); | |
830 | return 1; | |
831 | } | |
832 | ||
833 | static int | |
38cb0e9c | 834 | putc_void_port (int c, SCM strm) |
0f2d19dd JB |
835 | { |
836 | return 0; /* vestigial return value */ | |
837 | } | |
838 | ||
839 | static int | |
38cb0e9c | 840 | puts_void_port (char *s, SCM strm) |
0f2d19dd JB |
841 | { |
842 | return 0; /* vestigial return value */ | |
843 | } | |
844 | ||
845 | static scm_sizet | |
38cb0e9c | 846 | write_void_port (char *ptr, scm_sizet size, scm_sizet nitems, SCM strm) |
0f2d19dd JB |
847 | { |
848 | int len; | |
849 | len = size * nitems; | |
850 | return len; | |
851 | } | |
852 | ||
1cc91f1b | 853 | |
0f2d19dd | 854 | static int |
38cb0e9c | 855 | flush_void_port (SCM strm) |
0f2d19dd JB |
856 | { |
857 | return 0; | |
858 | } | |
859 | ||
1cc91f1b | 860 | |
0f2d19dd | 861 | static int |
38cb0e9c | 862 | getc_void_port (SCM strm) |
0f2d19dd JB |
863 | { |
864 | return EOF; | |
865 | } | |
866 | ||
3cb988bd | 867 | static char * |
848f2a01 | 868 | fgets_void_port (SCM strm, int *len) |
3cb988bd TP |
869 | { |
870 | return NULL; | |
871 | } | |
1cc91f1b | 872 | |
0f2d19dd | 873 | static int |
38cb0e9c | 874 | close_void_port (SCM strm) |
0f2d19dd JB |
875 | { |
876 | return 0; /* this is ignored by scm_close_port. */ | |
877 | } | |
878 | ||
879 | ||
1cc91f1b | 880 | |
0f2d19dd | 881 | static int |
38cb0e9c | 882 | noop0 (SCM stream) |
0f2d19dd JB |
883 | { |
884 | return 0; | |
885 | } | |
886 | ||
887 | ||
888 | static struct scm_ptobfuns void_port_ptob = | |
889 | { | |
890 | scm_mark0, | |
891 | noop0, | |
892 | print_void_port, | |
893 | 0, /* equal? */ | |
894 | putc_void_port, | |
895 | puts_void_port, | |
896 | write_void_port, | |
897 | flush_void_port, | |
898 | getc_void_port, | |
3cb988bd | 899 | fgets_void_port, |
0f2d19dd JB |
900 | close_void_port, |
901 | }; | |
902 | ||
903 | \f | |
904 | ||
1cc91f1b | 905 | |
0f2d19dd JB |
906 | SCM |
907 | scm_void_port (mode_str) | |
908 | char * mode_str; | |
0f2d19dd JB |
909 | { |
910 | int mode_bits; | |
911 | SCM answer; | |
912 | struct scm_port_table * pt; | |
913 | ||
914 | SCM_NEWCELL (answer); | |
915 | SCM_DEFER_INTS; | |
916 | mode_bits = scm_mode_bits (mode_str); | |
917 | pt = scm_add_to_port_table (answer); | |
898a256f | 918 | SCM_SETCAR (answer, scm_tc16_void_port | mode_bits); |
0f2d19dd JB |
919 | SCM_SETPTAB_ENTRY (answer, pt); |
920 | SCM_SETSTREAM (answer, SCM_BOOL_F); | |
921 | SCM_ALLOW_INTS; | |
922 | return answer; | |
923 | } | |
924 | ||
925 | ||
926 | SCM_PROC (s_sys_make_void_port, "%make-void-port", 1, 0, 0, scm_sys_make_void_port); | |
1cc91f1b | 927 | |
0f2d19dd JB |
928 | SCM |
929 | scm_sys_make_void_port (mode) | |
930 | SCM mode; | |
0f2d19dd | 931 | { |
89958ad0 | 932 | SCM_ASSERT (SCM_NIMP (mode) && SCM_ROSTRINGP (mode), mode, |
0f2d19dd JB |
933 | SCM_ARG1, s_sys_make_void_port); |
934 | ||
89958ad0 | 935 | SCM_COERCE_SUBSTR (mode); |
0f2d19dd JB |
936 | return scm_void_port (SCM_ROCHARS (mode)); |
937 | } | |
938 | ||
939 | ||
940 | ||
941 | \f | |
942 | ||
1cc91f1b | 943 | |
0f2d19dd JB |
944 | void |
945 | scm_init_ports () | |
0f2d19dd JB |
946 | { |
947 | scm_tc16_void_port = scm_newptob (&void_port_ptob); | |
948 | #include "ports.x" | |
949 | } | |
950 |