Commit | Line | Data |
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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; | |
0f2d19dd | 84 | openp = SCM_CAR (ptr) & SCM_OPN; |
0f2d19dd JB |
85 | if (openp) |
86 | return SCM_STREAM (ptr); | |
87 | else | |
88 | return SCM_BOOL_F; | |
89 | } | |
90 | ||
91 | ||
1cc91f1b | 92 | |
0f2d19dd JB |
93 | long |
94 | scm_newptob (ptob) | |
95 | scm_ptobfuns *ptob; | |
0f2d19dd JB |
96 | { |
97 | char *tmp; | |
98 | if (255 <= scm_numptob) | |
99 | goto ptoberr; | |
100 | SCM_DEFER_INTS; | |
101 | SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_ptobs, (1 + scm_numptob) * sizeof (scm_ptobfuns))); | |
102 | if (tmp) | |
103 | { | |
104 | scm_ptobs = (scm_ptobfuns *) tmp; | |
105 | scm_ptobs[scm_numptob].mark = ptob->mark; | |
106 | scm_ptobs[scm_numptob].free = ptob->free; | |
107 | scm_ptobs[scm_numptob].print = ptob->print; | |
108 | scm_ptobs[scm_numptob].equalp = ptob->equalp; | |
109 | scm_ptobs[scm_numptob].fputc = ptob->fputc; | |
110 | scm_ptobs[scm_numptob].fputs = ptob->fputs; | |
111 | scm_ptobs[scm_numptob].fwrite = ptob->fwrite; | |
112 | scm_ptobs[scm_numptob].fflush = ptob->fflush; | |
113 | scm_ptobs[scm_numptob].fgetc = ptob->fgetc; | |
3cb988bd | 114 | scm_ptobs[scm_numptob].fgets = ptob->fgets; |
0f2d19dd JB |
115 | scm_ptobs[scm_numptob].fclose = ptob->fclose; |
116 | scm_numptob++; | |
117 | } | |
118 | SCM_ALLOW_INTS; | |
119 | if (!tmp) | |
120 | ptoberr:scm_wta (SCM_MAKINUM ((long) scm_numptob), (char *) SCM_NALLOC, "newptob"); | |
121 | return scm_tc7_port + (scm_numptob - 1) * 256; | |
122 | } | |
123 | ||
124 | \f | |
125 | /* internal SCM call */ | |
1cc91f1b | 126 | |
0f2d19dd JB |
127 | void |
128 | scm_fflush (port) | |
129 | SCM port; | |
0f2d19dd JB |
130 | { |
131 | scm_sizet i = SCM_PTOBNUM (port); | |
132 | (scm_ptobs[i].fflush) (SCM_STREAM (port)); | |
133 | } | |
134 | ||
135 | \f | |
136 | ||
44493941 | 137 | SCM_PROC(s_char_ready_p, "char-ready?", 0, 1, 0, scm_char_ready_p); |
1cc91f1b | 138 | |
0f2d19dd JB |
139 | SCM |
140 | scm_char_ready_p (port) | |
141 | SCM port; | |
0f2d19dd JB |
142 | { |
143 | if (SCM_UNBNDP (port)) | |
144 | port = scm_cur_inp; | |
145 | else | |
146 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_char_ready_p); | |
147 | if (SCM_CRDYP (port) || !SCM_FPORTP (port)) | |
148 | return SCM_BOOL_T; | |
5d09ff4e MD |
149 | return (scm_input_waiting_p ((FILE *) SCM_STREAM (port), s_char_ready_p) |
150 | ? SCM_BOOL_T | |
151 | : SCM_BOOL_F); | |
0f2d19dd | 152 | } |
0f2d19dd JB |
153 | |
154 | ||
155 | \f | |
156 | ||
157 | ||
158 | /* {Standard Ports} | |
159 | */ | |
160 | SCM_PROC(s_current_input_port, "current-input-port", 0, 0, 0, scm_current_input_port); | |
1cc91f1b | 161 | |
0f2d19dd JB |
162 | SCM |
163 | scm_current_input_port () | |
0f2d19dd JB |
164 | { |
165 | return scm_cur_inp; | |
166 | } | |
167 | ||
168 | SCM_PROC(s_current_output_port, "current-output-port", 0, 0, 0, scm_current_output_port); | |
1cc91f1b | 169 | |
0f2d19dd JB |
170 | SCM |
171 | scm_current_output_port () | |
0f2d19dd JB |
172 | { |
173 | return scm_cur_outp; | |
174 | } | |
175 | ||
176 | SCM_PROC(s_current_error_port, "current-error-port", 0, 0, 0, scm_current_error_port); | |
1cc91f1b | 177 | |
0f2d19dd JB |
178 | SCM |
179 | scm_current_error_port () | |
0f2d19dd JB |
180 | { |
181 | return scm_cur_errp; | |
182 | } | |
183 | ||
31614d8e MD |
184 | SCM_PROC(s_current_load_port, "current-load-port", 0, 0, 0, scm_current_load_port); |
185 | ||
186 | SCM | |
187 | scm_current_load_port () | |
188 | { | |
189 | return scm_cur_loadp; | |
190 | } | |
191 | ||
0f2d19dd | 192 | SCM_PROC(s_set_current_input_port, "set-current-input-port", 1, 0, 0, scm_set_current_input_port); |
1cc91f1b | 193 | |
0f2d19dd JB |
194 | SCM |
195 | scm_set_current_input_port (port) | |
196 | SCM port; | |
0f2d19dd JB |
197 | { |
198 | SCM oinp = scm_cur_inp; | |
199 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_set_current_input_port); | |
200 | scm_cur_inp = port; | |
201 | return oinp; | |
202 | } | |
203 | ||
204 | ||
205 | SCM_PROC(s_set_current_output_port, "set-current-output-port", 1, 0, 0, scm_set_current_output_port); | |
1cc91f1b | 206 | |
0f2d19dd JB |
207 | SCM |
208 | scm_set_current_output_port (port) | |
209 | SCM port; | |
0f2d19dd JB |
210 | { |
211 | SCM ooutp = scm_cur_outp; | |
78446828 | 212 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
213 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_output_port); |
214 | scm_cur_outp = port; | |
215 | return ooutp; | |
216 | } | |
217 | ||
218 | ||
219 | SCM_PROC(s_set_current_error_port, "set-current-error-port", 1, 0, 0, scm_set_current_error_port); | |
1cc91f1b | 220 | |
0f2d19dd JB |
221 | SCM |
222 | scm_set_current_error_port (port) | |
223 | SCM port; | |
0f2d19dd JB |
224 | { |
225 | SCM oerrp = scm_cur_errp; | |
78446828 | 226 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
227 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_error_port); |
228 | scm_cur_errp = port; | |
229 | return oerrp; | |
230 | } | |
231 | ||
232 | \f | |
233 | ||
234 | /* {Ports - in general} | |
235 | * | |
236 | */ | |
237 | ||
238 | /* Array of open ports, required for reliable MOVE->FDES etc. */ | |
239 | struct scm_port_table **scm_port_table; | |
240 | ||
241 | int scm_port_table_size = 0; /* Number of ports in scm_port_table. */ | |
242 | int scm_port_table_room = 20; /* Size of the array. */ | |
243 | ||
244 | /* Add a port to the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 245 | |
0f2d19dd JB |
246 | struct scm_port_table * |
247 | scm_add_to_port_table (port) | |
248 | SCM port; | |
0f2d19dd JB |
249 | { |
250 | if (scm_port_table_size == scm_port_table_room) | |
251 | { | |
252 | scm_port_table = ((struct scm_port_table **) | |
253 | realloc ((char *) scm_port_table, | |
67fe060e GH |
254 | (scm_sizet) (sizeof (struct scm_port_table *) |
255 | * scm_port_table_room * 2))); | |
0f2d19dd JB |
256 | /* !!! error checking */ |
257 | scm_port_table_room *= 2; | |
258 | } | |
259 | scm_port_table[scm_port_table_size] = ((struct scm_port_table *) | |
260 | scm_must_malloc (sizeof (struct scm_port_table), | |
261 | "system port table")); | |
262 | scm_port_table[scm_port_table_size]->port = port; | |
263 | scm_port_table[scm_port_table_size]->revealed = 0; | |
264 | scm_port_table[scm_port_table_size]->stream = 0; | |
ebf7394e | 265 | scm_port_table[scm_port_table_size]->file_name = SCM_BOOL_F; |
d0defdf3 | 266 | scm_port_table[scm_port_table_size]->line_number = 0; |
0f2d19dd | 267 | scm_port_table[scm_port_table_size]->column_number = 0; |
0f2d19dd JB |
268 | return scm_port_table[scm_port_table_size++]; |
269 | } | |
270 | ||
271 | /* Remove a port from the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 272 | |
0f2d19dd JB |
273 | void |
274 | scm_remove_from_port_table (port) | |
275 | SCM port; | |
0f2d19dd JB |
276 | { |
277 | int i = 0; | |
278 | while (scm_port_table[i]->port != port) | |
279 | { | |
280 | i++; | |
281 | /* Error if not found: too violent? May occur in GC. */ | |
282 | if (i >= scm_port_table_size) | |
283 | scm_wta (port, "Port not in table", "scm_remove_from_port_table"); | |
284 | } | |
285 | scm_must_free ((char *)scm_port_table[i]); | |
286 | scm_mallocated -= sizeof (*scm_port_table[i]); | |
287 | scm_port_table[i] = scm_port_table[scm_port_table_size - 1]; | |
288 | SCM_SETPTAB_ENTRY (port, 0); | |
289 | scm_port_table_size--; | |
290 | } | |
291 | ||
fea6b4ea | 292 | #ifdef GUILE_DEBUG |
0f2d19dd JB |
293 | /* Undocumented functions for debugging. */ |
294 | /* Return the number of ports in the table. */ | |
1cc91f1b | 295 | |
1146b6cd | 296 | SCM_PROC(s_pt_size, "pt-size", 0, 0, 0, scm_pt_size); |
0f2d19dd JB |
297 | SCM |
298 | scm_pt_size () | |
0f2d19dd JB |
299 | { |
300 | return SCM_MAKINUM (scm_port_table_size); | |
301 | } | |
302 | ||
303 | /* Return the ith member of the port table. */ | |
1146b6cd | 304 | SCM_PROC(s_pt_member, "pt-member", 1, 0, 0, scm_pt_member); |
0f2d19dd JB |
305 | SCM |
306 | scm_pt_member (member) | |
307 | SCM member; | |
0f2d19dd JB |
308 | { |
309 | int i; | |
310 | SCM_ASSERT (SCM_INUMP (member), member, SCM_ARG1, s_pt_member); | |
311 | i = SCM_INUM (member); | |
312 | if (i < 0 || i >= scm_port_table_size) | |
313 | return SCM_BOOL_F; | |
314 | else | |
315 | return scm_port_table[i]->port; | |
316 | } | |
317 | #endif | |
318 | ||
319 | ||
8b13c6b3 GH |
320 | /* Find a port in the table and return its revealed count. |
321 | Also used by the garbage collector. | |
0f2d19dd | 322 | */ |
1cc91f1b | 323 | |
0f2d19dd JB |
324 | int |
325 | scm_revealed_count (port) | |
326 | SCM port; | |
0f2d19dd JB |
327 | { |
328 | return SCM_REVEALED(port); | |
329 | } | |
330 | ||
331 | ||
332 | ||
333 | /* Return the revealed count for a port. */ | |
334 | ||
335 | SCM_PROC(s_port_revealed, "port-revealed", 1, 0, 0, scm_port_revealed); | |
1cc91f1b | 336 | |
0f2d19dd JB |
337 | SCM |
338 | scm_port_revealed (port) | |
339 | SCM port; | |
0f2d19dd | 340 | { |
78446828 | 341 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd | 342 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_port_revealed); |
8b13c6b3 | 343 | return SCM_MAKINUM (scm_revealed_count (port)); |
0f2d19dd JB |
344 | } |
345 | ||
346 | /* Set the revealed count for a port. */ | |
347 | SCM_PROC(s_set_port_revealed_x, "set-port-revealed!", 2, 0, 0, scm_set_port_revealed_x); | |
1cc91f1b | 348 | |
0f2d19dd JB |
349 | SCM |
350 | scm_set_port_revealed_x (port, rcount) | |
351 | SCM port; | |
352 | SCM rcount; | |
0f2d19dd | 353 | { |
78446828 | 354 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
355 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_set_port_revealed_x); |
356 | SCM_ASSERT (SCM_INUMP (rcount), rcount, SCM_ARG2, s_set_port_revealed_x); | |
357 | SCM_DEFER_INTS; | |
358 | SCM_REVEALED (port) = SCM_INUM (rcount); | |
359 | SCM_ALLOW_INTS; | |
8b13c6b3 | 360 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
361 | } |
362 | ||
eadd48de GH |
363 | /* Return the flags that characterize a port based on the mode |
364 | * string used to open a file for that port. | |
365 | * | |
366 | * See PORT FLAGS in scm.h | |
367 | */ | |
368 | ||
369 | long | |
370 | scm_mode_bits (modes) | |
371 | char *modes; | |
372 | { | |
373 | return (SCM_OPN | |
374 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
375 | | ( strchr (modes, 'w') | |
376 | || strchr (modes, 'a') | |
377 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
378 | | (strchr (modes, '0') ? SCM_BUF0 : 0)); | |
379 | } | |
380 | ||
381 | ||
382 | /* Return the mode flags from an open port. | |
383 | * Some modes such as "append" are only used when opening | |
384 | * a file and are not returned here. */ | |
385 | ||
386 | SCM_PROC(s_port_mode, "port-mode", 1, 0, 0, scm_port_mode); | |
387 | ||
388 | SCM | |
389 | scm_port_mode (port) | |
390 | SCM port; | |
391 | { | |
392 | char modes[3]; | |
393 | modes[0] = '\0'; | |
78446828 MV |
394 | |
395 | port = SCM_COERCE_OUTPORT (port); | |
eadd48de GH |
396 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_port_mode); |
397 | if (SCM_CAR (port) & SCM_RDNG) { | |
398 | if (SCM_CAR (port) & SCM_WRTNG) | |
399 | strcpy (modes, "r+"); | |
400 | else | |
401 | strcpy (modes, "r"); | |
402 | } | |
403 | else if (SCM_CAR (port) & SCM_WRTNG) | |
404 | strcpy (modes, "w"); | |
405 | if (SCM_CAR (port) & SCM_BUF0) | |
406 | strcat (modes, "0"); | |
407 | return scm_makfromstr (modes, strlen (modes), 0); | |
408 | } | |
409 | ||
410 | ||
0f2d19dd JB |
411 | /* scm_close_port |
412 | * Call the close operation on a port object. | |
eadd48de | 413 | * see also scm_close. |
0f2d19dd JB |
414 | */ |
415 | SCM_PROC(s_close_port, "close-port", 1, 0, 0, scm_close_port); | |
1cc91f1b | 416 | |
0f2d19dd JB |
417 | SCM |
418 | scm_close_port (port) | |
419 | SCM port; | |
0f2d19dd JB |
420 | { |
421 | scm_sizet i; | |
eadd48de GH |
422 | int rv; |
423 | ||
78446828 MV |
424 | port = SCM_COERCE_OUTPORT (port); |
425 | ||
341eaef0 | 426 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, |
3c1750f3 | 427 | s_close_port); |
0f2d19dd | 428 | if (SCM_CLOSEDP (port)) |
eadd48de | 429 | return SCM_BOOL_F; |
0f2d19dd JB |
430 | i = SCM_PTOBNUM (port); |
431 | SCM_DEFER_INTS; | |
432 | if (scm_ptobs[i].fclose) | |
eadd48de GH |
433 | { |
434 | SCM_SYSCALL (rv = (scm_ptobs[i].fclose) (SCM_STREAM (port))); | |
435 | /* ports with a closed file descriptor can be reclosed without error. */ | |
436 | if (rv < 0 && errno != EBADF) | |
437 | scm_syserror (s_close_port); | |
438 | } | |
439 | else | |
440 | rv = 0; | |
0f2d19dd | 441 | scm_remove_from_port_table (port); |
898a256f | 442 | SCM_SETAND_CAR (port, ~SCM_OPN); |
0f2d19dd | 443 | SCM_ALLOW_INTS; |
eadd48de | 444 | return (rv < 0) ? SCM_BOOL_F : SCM_BOOL_T; |
0f2d19dd JB |
445 | } |
446 | ||
447 | SCM_PROC(s_close_all_ports_except, "close-all-ports-except", 0, 0, 1, scm_close_all_ports_except); | |
1cc91f1b | 448 | |
0f2d19dd JB |
449 | SCM |
450 | scm_close_all_ports_except (ports) | |
451 | SCM ports; | |
0f2d19dd JB |
452 | { |
453 | int i = 0; | |
454 | SCM_ASSERT (SCM_NIMP (ports) && SCM_CONSP (ports), ports, SCM_ARG1, s_close_all_ports_except); | |
455 | SCM_DEFER_INTS; | |
456 | while (i < scm_port_table_size) | |
457 | { | |
458 | SCM thisport = scm_port_table[i]->port; | |
459 | int found = 0; | |
460 | SCM ports_ptr = ports; | |
461 | ||
462 | while (SCM_NNULLP (ports_ptr)) | |
463 | { | |
78446828 | 464 | SCM port = SCM_COERCE_OUTPORT (SCM_CAR (ports_ptr)); |
0f2d19dd JB |
465 | if (i == 0) |
466 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_close_all_ports_except); | |
467 | if (port == thisport) | |
468 | found = 1; | |
469 | ports_ptr = SCM_CDR (ports_ptr); | |
470 | } | |
471 | if (found) | |
472 | i++; | |
473 | else | |
474 | /* i is not to be incremented here. */ | |
475 | scm_close_port (thisport); | |
476 | } | |
477 | SCM_ALLOW_INTS; | |
478 | return SCM_UNSPECIFIED; | |
479 | } | |
480 | ||
481 | SCM_PROC(s_input_port_p, "input-port?", 1, 0, 0, scm_input_port_p); | |
1cc91f1b | 482 | |
0f2d19dd JB |
483 | SCM |
484 | scm_input_port_p (x) | |
485 | SCM x; | |
0f2d19dd JB |
486 | { |
487 | if (SCM_IMP (x)) | |
488 | return SCM_BOOL_F; | |
489 | return SCM_INPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
490 | } | |
491 | ||
492 | SCM_PROC(s_output_port_p, "output-port?", 1, 0, 0, scm_output_port_p); | |
1cc91f1b | 493 | |
0f2d19dd JB |
494 | SCM |
495 | scm_output_port_p (x) | |
496 | SCM x; | |
0f2d19dd JB |
497 | { |
498 | if (SCM_IMP (x)) | |
499 | return SCM_BOOL_F; | |
500 | return SCM_OUTPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
501 | } | |
502 | ||
503 | ||
504 | SCM_PROC(s_eof_object_p, "eof-object?", 1, 0, 0, scm_eof_object_p); | |
1cc91f1b | 505 | |
0f2d19dd JB |
506 | SCM |
507 | scm_eof_object_p (x) | |
508 | SCM x; | |
0f2d19dd | 509 | { |
0c32d76c | 510 | return SCM_EOF_OBJECT_P (x) ? SCM_BOOL_T : SCM_BOOL_F; |
0f2d19dd JB |
511 | } |
512 | ||
513 | SCM_PROC(s_force_output, "force-output", 0, 1, 0, scm_force_output); | |
1cc91f1b | 514 | |
0f2d19dd JB |
515 | SCM |
516 | scm_force_output (port) | |
517 | SCM port; | |
0f2d19dd JB |
518 | { |
519 | if (SCM_UNBNDP (port)) | |
520 | port = scm_cur_outp; | |
521 | else | |
78446828 MV |
522 | { |
523 | port = SCM_COERCE_OUTPORT (port); | |
524 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_force_output); | |
525 | } | |
0f2d19dd JB |
526 | { |
527 | scm_sizet i = SCM_PTOBNUM (port); | |
528 | SCM_SYSCALL ((scm_ptobs[i].fflush) (SCM_STREAM (port))); | |
529 | return SCM_UNSPECIFIED; | |
530 | } | |
531 | } | |
532 | ||
9c29ac66 | 533 | SCM_PROC (s_flush_all_ports, "flush-all-ports", 0, 0, 0, scm_flush_all_ports); |
89ea5b7c GH |
534 | SCM |
535 | scm_flush_all_ports (void) | |
536 | { | |
537 | int i; | |
538 | ||
539 | for (i = 0; i < scm_port_table_size; i++) | |
540 | { | |
541 | SCM port = scm_port_table[i]->port; | |
542 | if (SCM_OPOUTPORTP (port)) | |
543 | { | |
544 | scm_sizet ptob = SCM_PTOBNUM (port); | |
545 | (scm_ptobs[ptob].fflush) (SCM_STREAM (port)); | |
546 | } | |
547 | } | |
548 | return SCM_UNSPECIFIED; | |
549 | } | |
0f2d19dd JB |
550 | |
551 | SCM_PROC(s_read_char, "read-char", 0, 1, 0, scm_read_char); | |
1cc91f1b | 552 | |
0f2d19dd JB |
553 | SCM |
554 | scm_read_char (port) | |
555 | SCM port; | |
0f2d19dd JB |
556 | { |
557 | int c; | |
558 | if (SCM_UNBNDP (port)) | |
334341aa | 559 | port = scm_cur_inp; |
0f2d19dd JB |
560 | else |
561 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_read_char); | |
b7f3516f | 562 | c = scm_getc (port); |
0f2d19dd JB |
563 | if (EOF == c) |
564 | return SCM_EOF_VAL; | |
565 | return SCM_MAKICHR (c); | |
566 | } | |
567 | ||
568 | ||
569 | SCM_PROC(s_peek_char, "peek-char", 0, 1, 0, scm_peek_char); | |
1cc91f1b | 570 | |
0f2d19dd JB |
571 | SCM |
572 | scm_peek_char (port) | |
573 | SCM port; | |
0f2d19dd JB |
574 | { |
575 | int c; | |
576 | if (SCM_UNBNDP (port)) | |
577 | port = scm_cur_inp; | |
578 | else | |
579 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_peek_char); | |
b7f3516f | 580 | c = scm_getc (port); |
0f2d19dd JB |
581 | if (EOF == c) |
582 | return SCM_EOF_VAL; | |
b7f3516f | 583 | scm_ungetc (c, port); |
0f2d19dd JB |
584 | return SCM_MAKICHR (c); |
585 | } | |
586 | ||
3cb988bd TP |
587 | /* |
588 | * A generic fgets method. We supply this method so that ports which | |
589 | * can't use fgets(3) (like string ports or soft ports) can still use | |
590 | * line-based i/o. The generic method calls the port's own fgetc method | |
591 | * for input. It should be possible to write a more efficient | |
592 | * method for any given port representation -- this is supplied just | |
593 | * to ensure that you don't have to. | |
594 | */ | |
595 | ||
848f2a01 | 596 | char * scm_generic_fgets SCM_P ((SCM port, int *len)); |
3cb988bd TP |
597 | |
598 | char * | |
848f2a01 | 599 | scm_generic_fgets (port, len) |
3cb988bd | 600 | SCM port; |
848f2a01 | 601 | int *len; |
3cb988bd TP |
602 | { |
603 | SCM f = SCM_STREAM (port); | |
604 | scm_sizet p = SCM_PTOBNUM (port); | |
605 | ||
848f2a01 | 606 | char *buf; |
3cb988bd TP |
607 | int limit = 80; /* current size of buffer */ |
608 | int c; | |
609 | ||
848f2a01 | 610 | /* FIXME: It would be nice to be able to check for EOF before anything. */ |
3cb988bd | 611 | |
848f2a01 | 612 | *len = 0; |
3e2043c4 TP |
613 | buf = (char *) malloc (limit * sizeof(char)); |
614 | ||
615 | /* If a char has been pushed onto the port with scm_ungetc, | |
616 | read that first. */ | |
617 | if (SCM_CRDYP (port)) | |
618 | { | |
848f2a01 | 619 | buf[*len] = SCM_CGETUN (port); |
3e2043c4 | 620 | SCM_CLRDY (port); |
848f2a01 | 621 | if (buf[(*len)++] == '\n') |
3e2043c4 | 622 | { |
848f2a01 | 623 | buf[*len] = '\0'; |
3e2043c4 TP |
624 | return buf; |
625 | } | |
626 | } | |
3cb988bd TP |
627 | |
628 | while (1) { | |
848f2a01 | 629 | if (*len >= limit-1) |
3cb988bd | 630 | { |
3e2043c4 | 631 | buf = (char *) realloc (buf, sizeof(char) * limit * 2); |
3cb988bd TP |
632 | limit *= 2; |
633 | } | |
634 | ||
635 | c = (scm_ptobs[p].fgetc) (f); | |
636 | if (c != EOF) | |
848f2a01 | 637 | buf[(*len)++] = c; |
3cb988bd TP |
638 | |
639 | if (c == EOF || c == '\n') | |
640 | { | |
848f2a01 | 641 | if (*len) |
3cb988bd | 642 | { |
848f2a01 | 643 | buf[*len] = '\0'; |
3cb988bd TP |
644 | return buf; |
645 | } | |
3e2043c4 | 646 | free (buf); |
3cb988bd TP |
647 | return NULL; |
648 | } | |
649 | } | |
650 | } | |
651 | ||
0f2d19dd | 652 | SCM_PROC (s_unread_char, "unread-char", 2, 0, 0, scm_unread_char); |
1cc91f1b | 653 | |
0f2d19dd JB |
654 | SCM |
655 | scm_unread_char (cobj, port) | |
656 | SCM cobj; | |
657 | SCM port; | |
0f2d19dd JB |
658 | { |
659 | int c; | |
660 | ||
661 | SCM_ASSERT (SCM_ICHRP (cobj), cobj, SCM_ARG1, s_unread_char); | |
662 | ||
663 | if (SCM_UNBNDP (port)) | |
664 | port = scm_cur_inp; | |
665 | else | |
666 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG2, s_unread_char); | |
667 | ||
668 | ||
669 | c = SCM_ICHR (cobj); | |
670 | ||
b7f3516f | 671 | scm_ungetc (c, port); |
0f2d19dd JB |
672 | return cobj; |
673 | } | |
674 | ||
360fc44c | 675 | SCM_PROC (s_port_line, "port-line", 1, 0, 0, scm_port_line); |
1cc91f1b | 676 | |
0f2d19dd | 677 | SCM |
d14af9f2 | 678 | scm_port_line (port) |
0f2d19dd | 679 | SCM port; |
0f2d19dd | 680 | { |
78446828 | 681 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
682 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
683 | port, | |
684 | SCM_ARG1, | |
685 | s_port_line); | |
686 | return SCM_MAKINUM (SCM_LINUM (port)); | |
0f2d19dd JB |
687 | } |
688 | ||
360fc44c | 689 | SCM_PROC (s_set_port_line_x, "set-port-line!", 2, 0, 0, scm_set_port_line_x); |
d043d8c2 MD |
690 | |
691 | SCM | |
692 | scm_set_port_line_x (port, line) | |
693 | SCM port; | |
694 | SCM line; | |
695 | { | |
360fc44c MD |
696 | port = SCM_COERCE_OUTPORT (port); |
697 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
698 | port, | |
699 | SCM_ARG1, | |
700 | s_set_port_line_x); | |
701 | SCM_ASSERT (SCM_INUMP (line), line, SCM_ARG2, s_set_port_line_x); | |
d043d8c2 MD |
702 | return SCM_PTAB_ENTRY (port)->line_number = SCM_INUM (line); |
703 | } | |
704 | ||
360fc44c | 705 | SCM_PROC (s_port_column, "port-column", 1, 0, 0, scm_port_column); |
1cc91f1b | 706 | |
0f2d19dd | 707 | SCM |
d14af9f2 | 708 | scm_port_column (port) |
0f2d19dd | 709 | SCM port; |
0f2d19dd | 710 | { |
78446828 | 711 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
712 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
713 | port, | |
714 | SCM_ARG1, | |
715 | s_port_column); | |
716 | return SCM_MAKINUM (SCM_COL (port)); | |
0f2d19dd JB |
717 | } |
718 | ||
360fc44c | 719 | SCM_PROC (s_set_port_column_x, "set-port-column!", 2, 0, 0, scm_set_port_column_x); |
d043d8c2 MD |
720 | |
721 | SCM | |
722 | scm_set_port_column_x (port, column) | |
723 | SCM port; | |
724 | SCM column; | |
725 | { | |
360fc44c MD |
726 | port = SCM_COERCE_OUTPORT (port); |
727 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
728 | port, | |
729 | SCM_ARG1, | |
730 | s_set_port_column_x); | |
731 | SCM_ASSERT (SCM_INUMP (column), column, SCM_ARG2, s_set_port_column_x); | |
d043d8c2 MD |
732 | return SCM_PTAB_ENTRY (port)->column_number = SCM_INUM (column); |
733 | } | |
734 | ||
360fc44c | 735 | SCM_PROC (s_port_filename, "port-filename", 1, 0, 0, scm_port_filename); |
1cc91f1b | 736 | |
0f2d19dd | 737 | SCM |
d14af9f2 | 738 | scm_port_filename (port) |
0f2d19dd | 739 | SCM port; |
0f2d19dd | 740 | { |
78446828 | 741 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
742 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
743 | port, | |
744 | SCM_ARG1, | |
745 | s_port_filename); | |
746 | return SCM_PTAB_ENTRY (port)->file_name; | |
0f2d19dd JB |
747 | } |
748 | ||
360fc44c | 749 | SCM_PROC (s_set_port_filename_x, "set-port-filename!", 2, 0, 0, scm_set_port_filename_x); |
1cc91f1b | 750 | |
d14af9f2 MD |
751 | SCM |
752 | scm_set_port_filename_x (port, filename) | |
753 | SCM port; | |
754 | SCM filename; | |
d14af9f2 | 755 | { |
360fc44c MD |
756 | port = SCM_COERCE_OUTPORT (port); |
757 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
758 | port, | |
759 | SCM_ARG1, | |
760 | s_set_port_filename_x); | |
761 | /* We allow the user to set the filename to whatever he likes. */ | |
d14af9f2 MD |
762 | return SCM_PTAB_ENTRY (port)->file_name = filename; |
763 | } | |
764 | ||
0f2d19dd JB |
765 | #ifndef ttyname |
766 | extern char * ttyname(); | |
767 | #endif | |
768 | ||
1cc91f1b | 769 | |
0f2d19dd JB |
770 | void |
771 | scm_prinport (exp, port, type) | |
772 | SCM exp; | |
773 | SCM port; | |
774 | char *type; | |
0f2d19dd | 775 | { |
b7f3516f | 776 | scm_puts ("#<", port); |
0f2d19dd | 777 | if (SCM_CLOSEDP (exp)) |
b7f3516f | 778 | scm_puts ("closed: ", port); |
0f2d19dd JB |
779 | else |
780 | { | |
781 | if (SCM_RDNG & SCM_CAR (exp)) | |
b7f3516f | 782 | scm_puts ("input: ", port); |
0f2d19dd | 783 | if (SCM_WRTNG & SCM_CAR (exp)) |
b7f3516f | 784 | scm_puts ("output: ", port); |
0f2d19dd | 785 | } |
b7f3516f TT |
786 | scm_puts (type, port); |
787 | scm_putc (' ', port); | |
0f2d19dd JB |
788 | #ifndef MSDOS |
789 | #ifndef __EMX__ | |
790 | #ifndef _DCC | |
791 | #ifndef AMIGA | |
792 | #ifndef THINK_C | |
793 | if (SCM_OPENP (exp) && scm_tc16_fport == SCM_TYP16 (exp) && isatty (fileno ((FILE *)SCM_STREAM (exp)))) | |
b7f3516f | 794 | scm_puts (ttyname (fileno ((FILE *)SCM_STREAM (exp))), port); |
0f2d19dd JB |
795 | else |
796 | #endif | |
797 | #endif | |
798 | #endif | |
799 | #endif | |
800 | #endif | |
801 | if (SCM_OPFPORTP (exp)) | |
802 | scm_intprint ((long) fileno ((FILE *)SCM_STREAM (exp)), 10, port); | |
803 | else | |
804 | scm_intprint (SCM_CDR (exp), 16, port); | |
b7f3516f | 805 | scm_putc ('>', port); |
0f2d19dd JB |
806 | } |
807 | ||
1cc91f1b | 808 | |
0f2d19dd JB |
809 | void |
810 | scm_ports_prehistory () | |
0f2d19dd JB |
811 | { |
812 | scm_numptob = 0; | |
813 | scm_ptobs = (scm_ptobfuns *) malloc (sizeof (scm_ptobfuns)); | |
814 | ||
815 | /* WARNING: These scm_newptob calls must be done in this order. | |
816 | * They must agree with the port declarations in tags.h. | |
817 | */ | |
818 | /* scm_tc16_fport = */ scm_newptob (&scm_fptob); | |
819 | /* scm_tc16_pipe = */ scm_newptob (&scm_pipob); | |
820 | /* scm_tc16_strport = */ scm_newptob (&scm_stptob); | |
821 | /* scm_tc16_sfport = */ scm_newptob (&scm_sfptob); | |
822 | } | |
823 | \f | |
824 | ||
825 | \f | |
826 | /* {Void Ports} | |
827 | */ | |
828 | ||
829 | int scm_tc16_void_port = 0; | |
830 | ||
831 | static int | |
38cb0e9c | 832 | print_void_port (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd JB |
833 | { |
834 | scm_prinport (exp, port, "void"); | |
835 | return 1; | |
836 | } | |
837 | ||
838 | static int | |
38cb0e9c | 839 | putc_void_port (int c, SCM strm) |
0f2d19dd JB |
840 | { |
841 | return 0; /* vestigial return value */ | |
842 | } | |
843 | ||
844 | static int | |
38cb0e9c | 845 | puts_void_port (char *s, SCM strm) |
0f2d19dd JB |
846 | { |
847 | return 0; /* vestigial return value */ | |
848 | } | |
849 | ||
850 | static scm_sizet | |
38cb0e9c | 851 | write_void_port (char *ptr, scm_sizet size, scm_sizet nitems, SCM strm) |
0f2d19dd JB |
852 | { |
853 | int len; | |
854 | len = size * nitems; | |
855 | return len; | |
856 | } | |
857 | ||
1cc91f1b | 858 | |
0f2d19dd | 859 | static int |
38cb0e9c | 860 | flush_void_port (SCM strm) |
0f2d19dd JB |
861 | { |
862 | return 0; | |
863 | } | |
864 | ||
1cc91f1b | 865 | |
0f2d19dd | 866 | static int |
38cb0e9c | 867 | getc_void_port (SCM strm) |
0f2d19dd JB |
868 | { |
869 | return EOF; | |
870 | } | |
871 | ||
3cb988bd | 872 | static char * |
848f2a01 | 873 | fgets_void_port (SCM strm, int *len) |
3cb988bd TP |
874 | { |
875 | return NULL; | |
876 | } | |
1cc91f1b | 877 | |
0f2d19dd | 878 | static int |
38cb0e9c | 879 | close_void_port (SCM strm) |
0f2d19dd JB |
880 | { |
881 | return 0; /* this is ignored by scm_close_port. */ | |
882 | } | |
883 | ||
884 | ||
1cc91f1b | 885 | |
0f2d19dd | 886 | static int |
38cb0e9c | 887 | noop0 (SCM stream) |
0f2d19dd JB |
888 | { |
889 | return 0; | |
890 | } | |
891 | ||
892 | ||
893 | static struct scm_ptobfuns void_port_ptob = | |
894 | { | |
dc53f026 | 895 | 0, |
0f2d19dd JB |
896 | noop0, |
897 | print_void_port, | |
898 | 0, /* equal? */ | |
899 | putc_void_port, | |
900 | puts_void_port, | |
901 | write_void_port, | |
902 | flush_void_port, | |
903 | getc_void_port, | |
3cb988bd | 904 | fgets_void_port, |
0f2d19dd JB |
905 | close_void_port, |
906 | }; | |
907 | ||
908 | \f | |
909 | ||
1cc91f1b | 910 | |
0f2d19dd JB |
911 | SCM |
912 | scm_void_port (mode_str) | |
913 | char * mode_str; | |
0f2d19dd JB |
914 | { |
915 | int mode_bits; | |
916 | SCM answer; | |
917 | struct scm_port_table * pt; | |
918 | ||
919 | SCM_NEWCELL (answer); | |
920 | SCM_DEFER_INTS; | |
921 | mode_bits = scm_mode_bits (mode_str); | |
922 | pt = scm_add_to_port_table (answer); | |
898a256f | 923 | SCM_SETCAR (answer, scm_tc16_void_port | mode_bits); |
0f2d19dd JB |
924 | SCM_SETPTAB_ENTRY (answer, pt); |
925 | SCM_SETSTREAM (answer, SCM_BOOL_F); | |
926 | SCM_ALLOW_INTS; | |
927 | return answer; | |
928 | } | |
929 | ||
930 | ||
931 | SCM_PROC (s_sys_make_void_port, "%make-void-port", 1, 0, 0, scm_sys_make_void_port); | |
1cc91f1b | 932 | |
0f2d19dd JB |
933 | SCM |
934 | scm_sys_make_void_port (mode) | |
935 | SCM mode; | |
0f2d19dd | 936 | { |
89958ad0 | 937 | SCM_ASSERT (SCM_NIMP (mode) && SCM_ROSTRINGP (mode), mode, |
0f2d19dd JB |
938 | SCM_ARG1, s_sys_make_void_port); |
939 | ||
89958ad0 | 940 | SCM_COERCE_SUBSTR (mode); |
0f2d19dd JB |
941 | return scm_void_port (SCM_ROCHARS (mode)); |
942 | } | |
943 | ||
944 | ||
945 | ||
946 | \f | |
947 | ||
1cc91f1b | 948 | |
0f2d19dd JB |
949 | void |
950 | scm_init_ports () | |
0f2d19dd JB |
951 | { |
952 | scm_tc16_void_port = scm_newptob (&void_port_ptob); | |
953 | #include "ports.x" | |
954 | } | |
955 |