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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 | #include <stdio.h> | |
43 | #include "_scm.h" | |
20e6290e JB |
44 | #include "genio.h" |
45 | #include "chars.h" | |
0f2d19dd | 46 | |
20e6290e JB |
47 | #include "markers.h" |
48 | #include "fports.h" | |
49 | #include "strports.h" | |
50 | #include "vports.h" | |
51 | ||
52 | #include "ports.h" | |
0f2d19dd JB |
53 | |
54 | #ifdef HAVE_MALLOC_H | |
95b88819 | 55 | #include <malloc.h> |
0f2d19dd JB |
56 | #endif |
57 | ||
58 | #ifdef HAVE_UNISTD_H | |
59 | #include <unistd.h> | |
60 | #endif | |
61 | ||
95b88819 GH |
62 | #ifdef HAVE_SYS_IOCTL_H |
63 | #include <sys/ioctl.h> | |
64 | #endif | |
0f2d19dd JB |
65 | \f |
66 | ||
67 | ||
68 | /* scm_ptobs scm_numptob | |
69 | * implement a dynamicly resized array of ptob records. | |
70 | * Indexes into this table are used when generating type | |
71 | * tags for smobjects (if you know a tag you can get an index and conversely). | |
72 | */ | |
73 | scm_ptobfuns *scm_ptobs; | |
74 | scm_sizet scm_numptob; | |
75 | ||
1cc91f1b | 76 | |
0f2d19dd JB |
77 | SCM |
78 | scm_markstream (ptr) | |
79 | SCM ptr; | |
0f2d19dd JB |
80 | { |
81 | int openp; | |
82 | if (SCM_GC8MARKP (ptr)) | |
83 | return SCM_BOOL_F; | |
84 | openp = SCM_CAR (ptr) & SCM_OPN; | |
85 | SCM_SETGC8MARK (ptr); | |
86 | if (openp) | |
87 | return SCM_STREAM (ptr); | |
88 | else | |
89 | return SCM_BOOL_F; | |
90 | } | |
91 | ||
92 | ||
1cc91f1b | 93 | |
0f2d19dd JB |
94 | long |
95 | scm_newptob (ptob) | |
96 | scm_ptobfuns *ptob; | |
0f2d19dd JB |
97 | { |
98 | char *tmp; | |
99 | if (255 <= scm_numptob) | |
100 | goto ptoberr; | |
101 | SCM_DEFER_INTS; | |
102 | SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_ptobs, (1 + scm_numptob) * sizeof (scm_ptobfuns))); | |
103 | if (tmp) | |
104 | { | |
105 | scm_ptobs = (scm_ptobfuns *) tmp; | |
106 | scm_ptobs[scm_numptob].mark = ptob->mark; | |
107 | scm_ptobs[scm_numptob].free = ptob->free; | |
108 | scm_ptobs[scm_numptob].print = ptob->print; | |
109 | scm_ptobs[scm_numptob].equalp = ptob->equalp; | |
110 | scm_ptobs[scm_numptob].fputc = ptob->fputc; | |
111 | scm_ptobs[scm_numptob].fputs = ptob->fputs; | |
112 | scm_ptobs[scm_numptob].fwrite = ptob->fwrite; | |
113 | scm_ptobs[scm_numptob].fflush = ptob->fflush; | |
114 | scm_ptobs[scm_numptob].fgetc = ptob->fgetc; | |
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 | ||
137 | ||
138 | #ifdef __IBMC__ | |
139 | # define MSDOS | |
140 | #endif | |
141 | #ifdef MSDOS | |
142 | # ifndef GO32 | |
143 | # include <io.h> | |
144 | # include <conio.h> | |
1cc91f1b JB |
145 | |
146 | static int input_waiting SCM_P ((FILE *f)); | |
147 | ||
0f2d19dd JB |
148 | static int |
149 | input_waiting (f) | |
150 | FILE *f; | |
0f2d19dd JB |
151 | { |
152 | if (feof (f)) | |
153 | return 1; | |
154 | if (fileno (f) == fileno (stdin) && (isatty (fileno (stdin)))) | |
155 | return kbhit (); | |
156 | return -1; | |
157 | } | |
158 | # endif | |
159 | #else | |
160 | # ifdef _DCC | |
161 | # include <ioctl.h> | |
162 | # else | |
163 | # ifndef AMIGA | |
164 | # ifndef vms | |
165 | # ifdef MWC | |
166 | # include <sys/io.h> | |
167 | # else | |
168 | # ifndef THINK_C | |
169 | # ifndef ARM_ULIB | |
170 | # include <sys/ioctl.h> | |
171 | # endif | |
172 | # endif | |
173 | # endif | |
174 | # endif | |
175 | # endif | |
176 | # endif | |
177 | ||
178 | ||
1cc91f1b JB |
179 | |
180 | static int input_waiting SCM_P ((FILE *f)); | |
181 | ||
0f2d19dd JB |
182 | static int |
183 | input_waiting(f) | |
184 | FILE *f; | |
0f2d19dd JB |
185 | { |
186 | # ifdef FIONREAD | |
187 | long remir; | |
188 | if (feof(f)) return 1; | |
189 | ioctl(fileno(f), FIONREAD, &remir); | |
190 | return remir; | |
191 | # else | |
192 | return -1; | |
193 | # endif | |
194 | } | |
195 | #endif | |
196 | ||
197 | SCM_PROC(s_char_ready_p, "char-ready?", 1, 0, 0, scm_char_ready_p); | |
1cc91f1b | 198 | |
0f2d19dd JB |
199 | SCM |
200 | scm_char_ready_p (port) | |
201 | SCM port; | |
0f2d19dd JB |
202 | { |
203 | if (SCM_UNBNDP (port)) | |
204 | port = scm_cur_inp; | |
205 | else | |
206 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_char_ready_p); | |
207 | if (SCM_CRDYP (port) || !SCM_FPORTP (port)) | |
208 | return SCM_BOOL_T; | |
209 | return input_waiting ((FILE *)SCM_STREAM (port)) ? SCM_BOOL_T : SCM_BOOL_F; | |
210 | } | |
211 | ||
212 | ||
213 | \f | |
214 | ||
215 | SCM_PROC (s_ungetc_char_ready_p, "ungetc-char-ready?", 1, 0, 0, scm_ungetc_char_ready_p); | |
1cc91f1b | 216 | |
0f2d19dd JB |
217 | SCM |
218 | scm_ungetc_char_ready_p (port) | |
219 | SCM port; | |
0f2d19dd JB |
220 | { |
221 | if (SCM_UNBNDP (port)) | |
222 | port = scm_cur_inp; | |
223 | else | |
224 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_ungetc_char_ready_p); | |
225 | return (SCM_CRDYP (port) | |
226 | ? SCM_BOOL_T | |
227 | : SCM_BOOL_F); | |
228 | } | |
229 | ||
230 | ||
231 | \f | |
232 | ||
233 | ||
234 | /* {Standard Ports} | |
235 | */ | |
236 | SCM_PROC(s_current_input_port, "current-input-port", 0, 0, 0, scm_current_input_port); | |
1cc91f1b | 237 | |
0f2d19dd JB |
238 | SCM |
239 | scm_current_input_port () | |
0f2d19dd JB |
240 | { |
241 | return scm_cur_inp; | |
242 | } | |
243 | ||
244 | SCM_PROC(s_current_output_port, "current-output-port", 0, 0, 0, scm_current_output_port); | |
1cc91f1b | 245 | |
0f2d19dd JB |
246 | SCM |
247 | scm_current_output_port () | |
0f2d19dd JB |
248 | { |
249 | return scm_cur_outp; | |
250 | } | |
251 | ||
252 | SCM_PROC(s_current_error_port, "current-error-port", 0, 0, 0, scm_current_error_port); | |
1cc91f1b | 253 | |
0f2d19dd JB |
254 | SCM |
255 | scm_current_error_port () | |
0f2d19dd JB |
256 | { |
257 | return scm_cur_errp; | |
258 | } | |
259 | ||
260 | SCM_PROC(s_set_current_input_port, "set-current-input-port", 1, 0, 0, scm_set_current_input_port); | |
1cc91f1b | 261 | |
0f2d19dd JB |
262 | SCM |
263 | scm_set_current_input_port (port) | |
264 | SCM port; | |
0f2d19dd JB |
265 | { |
266 | SCM oinp = scm_cur_inp; | |
267 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_set_current_input_port); | |
268 | scm_cur_inp = port; | |
269 | return oinp; | |
270 | } | |
271 | ||
272 | ||
273 | SCM_PROC(s_set_current_output_port, "set-current-output-port", 1, 0, 0, scm_set_current_output_port); | |
1cc91f1b | 274 | |
0f2d19dd JB |
275 | SCM |
276 | scm_set_current_output_port (port) | |
277 | SCM port; | |
0f2d19dd JB |
278 | { |
279 | SCM ooutp = scm_cur_outp; | |
280 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_output_port); | |
281 | scm_cur_outp = port; | |
282 | return ooutp; | |
283 | } | |
284 | ||
285 | ||
286 | SCM_PROC(s_set_current_error_port, "set-current-error-port", 1, 0, 0, scm_set_current_error_port); | |
1cc91f1b | 287 | |
0f2d19dd JB |
288 | SCM |
289 | scm_set_current_error_port (port) | |
290 | SCM port; | |
0f2d19dd JB |
291 | { |
292 | SCM oerrp = scm_cur_errp; | |
293 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_error_port); | |
294 | scm_cur_errp = port; | |
295 | return oerrp; | |
296 | } | |
297 | ||
298 | \f | |
299 | ||
300 | /* {Ports - in general} | |
301 | * | |
302 | */ | |
303 | ||
304 | /* Array of open ports, required for reliable MOVE->FDES etc. */ | |
305 | struct scm_port_table **scm_port_table; | |
306 | ||
307 | int scm_port_table_size = 0; /* Number of ports in scm_port_table. */ | |
308 | int scm_port_table_room = 20; /* Size of the array. */ | |
309 | ||
310 | /* Add a port to the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 311 | |
0f2d19dd JB |
312 | struct scm_port_table * |
313 | scm_add_to_port_table (port) | |
314 | SCM port; | |
0f2d19dd JB |
315 | { |
316 | if (scm_port_table_size == scm_port_table_room) | |
317 | { | |
318 | scm_port_table = ((struct scm_port_table **) | |
319 | realloc ((char *) scm_port_table, | |
320 | (long) (sizeof (struct scm_port_table) | |
321 | * scm_port_table_room * 2))); | |
322 | /* !!! error checking */ | |
323 | scm_port_table_room *= 2; | |
324 | } | |
325 | scm_port_table[scm_port_table_size] = ((struct scm_port_table *) | |
326 | scm_must_malloc (sizeof (struct scm_port_table), | |
327 | "system port table")); | |
328 | scm_port_table[scm_port_table_size]->port = port; | |
329 | scm_port_table[scm_port_table_size]->revealed = 0; | |
330 | scm_port_table[scm_port_table_size]->stream = 0; | |
ebf7394e | 331 | scm_port_table[scm_port_table_size]->file_name = SCM_BOOL_F; |
0f2d19dd JB |
332 | scm_port_table[scm_port_table_size]->line_number = 1; |
333 | scm_port_table[scm_port_table_size]->column_number = 0; | |
334 | scm_port_table[scm_port_table_size]->representation = scm_regular_port; | |
335 | return scm_port_table[scm_port_table_size++]; | |
336 | } | |
337 | ||
338 | /* Remove a port from the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 339 | |
0f2d19dd JB |
340 | void |
341 | scm_remove_from_port_table (port) | |
342 | SCM port; | |
0f2d19dd JB |
343 | { |
344 | int i = 0; | |
345 | while (scm_port_table[i]->port != port) | |
346 | { | |
347 | i++; | |
348 | /* Error if not found: too violent? May occur in GC. */ | |
349 | if (i >= scm_port_table_size) | |
350 | scm_wta (port, "Port not in table", "scm_remove_from_port_table"); | |
351 | } | |
352 | scm_must_free ((char *)scm_port_table[i]); | |
353 | scm_mallocated -= sizeof (*scm_port_table[i]); | |
354 | scm_port_table[i] = scm_port_table[scm_port_table_size - 1]; | |
355 | SCM_SETPTAB_ENTRY (port, 0); | |
356 | scm_port_table_size--; | |
357 | } | |
358 | ||
359 | #ifdef DEBUG | |
360 | /* Undocumented functions for debugging. */ | |
361 | /* Return the number of ports in the table. */ | |
362 | static char s_pt_size[] = "pt-size"; | |
1cc91f1b | 363 | |
0f2d19dd JB |
364 | SCM |
365 | scm_pt_size () | |
0f2d19dd JB |
366 | { |
367 | return SCM_MAKINUM (scm_port_table_size); | |
368 | } | |
369 | ||
370 | /* Return the ith member of the port table. */ | |
371 | static char s_pt_member[] = "pt-member"; | |
1cc91f1b | 372 | |
0f2d19dd JB |
373 | SCM |
374 | scm_pt_member (member) | |
375 | SCM member; | |
0f2d19dd JB |
376 | { |
377 | int i; | |
378 | SCM_ASSERT (SCM_INUMP (member), member, SCM_ARG1, s_pt_member); | |
379 | i = SCM_INUM (member); | |
380 | if (i < 0 || i >= scm_port_table_size) | |
381 | return SCM_BOOL_F; | |
382 | else | |
383 | return scm_port_table[i]->port; | |
384 | } | |
385 | #endif | |
386 | ||
387 | ||
8b13c6b3 GH |
388 | /* Find a port in the table and return its revealed count. |
389 | Also used by the garbage collector. | |
0f2d19dd | 390 | */ |
1cc91f1b | 391 | |
0f2d19dd JB |
392 | int |
393 | scm_revealed_count (port) | |
394 | SCM port; | |
0f2d19dd JB |
395 | { |
396 | return SCM_REVEALED(port); | |
397 | } | |
398 | ||
399 | ||
400 | ||
401 | /* Return the revealed count for a port. */ | |
402 | ||
403 | SCM_PROC(s_port_revealed, "port-revealed", 1, 0, 0, scm_port_revealed); | |
1cc91f1b | 404 | |
0f2d19dd JB |
405 | SCM |
406 | scm_port_revealed (port) | |
407 | SCM port; | |
0f2d19dd | 408 | { |
0f2d19dd | 409 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_port_revealed); |
8b13c6b3 | 410 | return SCM_MAKINUM (scm_revealed_count (port)); |
0f2d19dd JB |
411 | } |
412 | ||
413 | /* Set the revealed count for a port. */ | |
414 | SCM_PROC(s_set_port_revealed_x, "set-port-revealed!", 2, 0, 0, scm_set_port_revealed_x); | |
1cc91f1b | 415 | |
0f2d19dd JB |
416 | SCM |
417 | scm_set_port_revealed_x (port, rcount) | |
418 | SCM port; | |
419 | SCM rcount; | |
0f2d19dd JB |
420 | { |
421 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_set_port_revealed_x); | |
422 | SCM_ASSERT (SCM_INUMP (rcount), rcount, SCM_ARG2, s_set_port_revealed_x); | |
423 | SCM_DEFER_INTS; | |
424 | SCM_REVEALED (port) = SCM_INUM (rcount); | |
425 | SCM_ALLOW_INTS; | |
8b13c6b3 | 426 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
427 | } |
428 | ||
429 | /* scm_close_port | |
430 | * Call the close operation on a port object. | |
431 | */ | |
432 | SCM_PROC(s_close_port, "close-port", 1, 0, 0, scm_close_port); | |
1cc91f1b | 433 | |
0f2d19dd JB |
434 | SCM |
435 | scm_close_port (port) | |
436 | SCM port; | |
0f2d19dd JB |
437 | { |
438 | scm_sizet i; | |
439 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_close_port); | |
440 | if (SCM_CLOSEDP (port)) | |
441 | return SCM_UNSPECIFIED; | |
442 | i = SCM_PTOBNUM (port); | |
443 | SCM_DEFER_INTS; | |
444 | if (scm_ptobs[i].fclose) | |
445 | SCM_SYSCALL ((scm_ptobs[i].fclose) (SCM_STREAM (port))); | |
446 | scm_remove_from_port_table (port); | |
898a256f | 447 | SCM_SETAND_CAR (port, ~SCM_OPN); |
0f2d19dd JB |
448 | SCM_ALLOW_INTS; |
449 | return SCM_UNSPECIFIED; | |
450 | } | |
451 | ||
452 | SCM_PROC(s_close_all_ports_except, "close-all-ports-except", 0, 0, 1, scm_close_all_ports_except); | |
1cc91f1b | 453 | |
0f2d19dd JB |
454 | SCM |
455 | scm_close_all_ports_except (ports) | |
456 | SCM ports; | |
0f2d19dd JB |
457 | { |
458 | int i = 0; | |
459 | SCM_ASSERT (SCM_NIMP (ports) && SCM_CONSP (ports), ports, SCM_ARG1, s_close_all_ports_except); | |
460 | SCM_DEFER_INTS; | |
461 | while (i < scm_port_table_size) | |
462 | { | |
463 | SCM thisport = scm_port_table[i]->port; | |
464 | int found = 0; | |
465 | SCM ports_ptr = ports; | |
466 | ||
467 | while (SCM_NNULLP (ports_ptr)) | |
468 | { | |
469 | SCM port = SCM_CAR (ports_ptr); | |
470 | if (i == 0) | |
471 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_close_all_ports_except); | |
472 | if (port == thisport) | |
473 | found = 1; | |
474 | ports_ptr = SCM_CDR (ports_ptr); | |
475 | } | |
476 | if (found) | |
477 | i++; | |
478 | else | |
479 | /* i is not to be incremented here. */ | |
480 | scm_close_port (thisport); | |
481 | } | |
482 | SCM_ALLOW_INTS; | |
483 | return SCM_UNSPECIFIED; | |
484 | } | |
485 | ||
486 | SCM_PROC(s_input_port_p, "input-port?", 1, 0, 0, scm_input_port_p); | |
1cc91f1b | 487 | |
0f2d19dd JB |
488 | SCM |
489 | scm_input_port_p (x) | |
490 | SCM x; | |
0f2d19dd JB |
491 | { |
492 | if (SCM_IMP (x)) | |
493 | return SCM_BOOL_F; | |
494 | return SCM_INPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
495 | } | |
496 | ||
497 | SCM_PROC(s_output_port_p, "output-port?", 1, 0, 0, scm_output_port_p); | |
1cc91f1b | 498 | |
0f2d19dd JB |
499 | SCM |
500 | scm_output_port_p (x) | |
501 | SCM x; | |
0f2d19dd JB |
502 | { |
503 | if (SCM_IMP (x)) | |
504 | return SCM_BOOL_F; | |
505 | return SCM_OUTPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
506 | } | |
507 | ||
508 | ||
509 | SCM_PROC(s_eof_object_p, "eof-object?", 1, 0, 0, scm_eof_object_p); | |
1cc91f1b | 510 | |
0f2d19dd JB |
511 | SCM |
512 | scm_eof_object_p (x) | |
513 | SCM x; | |
0f2d19dd JB |
514 | { |
515 | return (SCM_EOF_VAL == x) ? SCM_BOOL_T : SCM_BOOL_F; | |
516 | } | |
517 | ||
518 | SCM_PROC(s_force_output, "force-output", 0, 1, 0, scm_force_output); | |
1cc91f1b | 519 | |
0f2d19dd JB |
520 | SCM |
521 | scm_force_output (port) | |
522 | SCM port; | |
0f2d19dd JB |
523 | { |
524 | if (SCM_UNBNDP (port)) | |
525 | port = scm_cur_outp; | |
526 | else | |
527 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_force_output); | |
528 | { | |
529 | scm_sizet i = SCM_PTOBNUM (port); | |
530 | SCM_SYSCALL ((scm_ptobs[i].fflush) (SCM_STREAM (port))); | |
531 | return SCM_UNSPECIFIED; | |
532 | } | |
533 | } | |
534 | ||
535 | ||
536 | SCM_PROC(s_read_char, "read-char", 0, 1, 0, scm_read_char); | |
1cc91f1b | 537 | |
0f2d19dd JB |
538 | SCM |
539 | scm_read_char (port) | |
540 | SCM port; | |
0f2d19dd JB |
541 | { |
542 | int c; | |
543 | if (SCM_UNBNDP (port)) | |
544 | port = scm_cur_inp; | |
545 | else | |
546 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_read_char); | |
547 | c = scm_gen_getc (port); | |
548 | if (EOF == c) | |
549 | return SCM_EOF_VAL; | |
550 | return SCM_MAKICHR (c); | |
551 | } | |
552 | ||
553 | ||
554 | SCM_PROC(s_peek_char, "peek-char", 0, 1, 0, scm_peek_char); | |
1cc91f1b | 555 | |
0f2d19dd JB |
556 | SCM |
557 | scm_peek_char (port) | |
558 | SCM port; | |
0f2d19dd JB |
559 | { |
560 | int c; | |
561 | if (SCM_UNBNDP (port)) | |
562 | port = scm_cur_inp; | |
563 | else | |
564 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_peek_char); | |
565 | c = scm_gen_getc (port); | |
566 | if (EOF == c) | |
567 | return SCM_EOF_VAL; | |
568 | scm_gen_ungetc (c, port); | |
569 | return SCM_MAKICHR (c); | |
570 | } | |
571 | ||
572 | SCM_PROC (s_unread_char, "unread-char", 2, 0, 0, scm_unread_char); | |
1cc91f1b | 573 | |
0f2d19dd JB |
574 | SCM |
575 | scm_unread_char (cobj, port) | |
576 | SCM cobj; | |
577 | SCM port; | |
0f2d19dd JB |
578 | { |
579 | int c; | |
580 | ||
581 | SCM_ASSERT (SCM_ICHRP (cobj), cobj, SCM_ARG1, s_unread_char); | |
582 | ||
583 | if (SCM_UNBNDP (port)) | |
584 | port = scm_cur_inp; | |
585 | else | |
586 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG2, s_unread_char); | |
587 | ||
588 | ||
589 | c = SCM_ICHR (cobj); | |
590 | ||
591 | scm_gen_ungetc (c, port); | |
592 | return cobj; | |
593 | } | |
594 | ||
595 | ||
596 | ||
d14af9f2 | 597 | SCM_PROC (s_port_line, "port-line", 0, 1, 0, scm_port_line); |
1cc91f1b | 598 | |
0f2d19dd | 599 | SCM |
d14af9f2 | 600 | scm_port_line (port) |
0f2d19dd | 601 | SCM port; |
0f2d19dd JB |
602 | { |
603 | SCM p; | |
604 | p = ((port == SCM_UNDEFINED) | |
605 | ? scm_cur_inp | |
606 | : port); | |
607 | if (!(SCM_NIMP (p) && SCM_PORTP (p))) | |
608 | return SCM_BOOL_F; | |
609 | else | |
610 | return SCM_MAKINUM (SCM_LINUM (p)); | |
611 | } | |
612 | ||
d043d8c2 MD |
613 | SCM_PROC (s_set_port_line_x, "set-port-line!", 1, 1, 0, scm_set_port_line_x); |
614 | ||
615 | SCM | |
616 | scm_set_port_line_x (port, line) | |
617 | SCM port; | |
618 | SCM line; | |
619 | { | |
620 | if (line == SCM_UNDEFINED) | |
621 | { | |
622 | line = port; | |
623 | port = scm_cur_inp; | |
624 | } | |
625 | else | |
626 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
627 | port, | |
628 | SCM_ARG1, | |
629 | s_set_port_line_x); | |
630 | return SCM_PTAB_ENTRY (port)->line_number = SCM_INUM (line); | |
631 | } | |
632 | ||
d14af9f2 | 633 | SCM_PROC (s_port_column, "port-column", 0, 1, 0, scm_port_column); |
1cc91f1b | 634 | |
0f2d19dd | 635 | SCM |
d14af9f2 | 636 | scm_port_column (port) |
0f2d19dd | 637 | SCM port; |
0f2d19dd JB |
638 | { |
639 | SCM p; | |
640 | p = ((port == SCM_UNDEFINED) | |
641 | ? scm_cur_inp | |
642 | : port); | |
643 | if (!(SCM_NIMP (p) && SCM_PORTP (p))) | |
644 | return SCM_BOOL_F; | |
645 | else | |
646 | return SCM_MAKINUM (SCM_COL (p)); | |
647 | } | |
648 | ||
d043d8c2 MD |
649 | SCM_PROC (s_set_port_column_x, "set-port-column!", 1, 1, 0, scm_set_port_column_x); |
650 | ||
651 | SCM | |
652 | scm_set_port_column_x (port, column) | |
653 | SCM port; | |
654 | SCM column; | |
655 | { | |
656 | if (column == SCM_UNDEFINED) | |
657 | { | |
658 | column = port; | |
659 | port = scm_cur_inp; | |
660 | } | |
661 | else | |
662 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
663 | port, | |
664 | SCM_ARG1, | |
665 | s_set_port_column_x); | |
666 | return SCM_PTAB_ENTRY (port)->column_number = SCM_INUM (column); | |
667 | } | |
668 | ||
d14af9f2 | 669 | SCM_PROC (s_port_filename, "port-filename", 0, 1, 0, scm_port_filename); |
1cc91f1b | 670 | |
0f2d19dd | 671 | SCM |
d14af9f2 | 672 | scm_port_filename (port) |
0f2d19dd | 673 | SCM port; |
0f2d19dd JB |
674 | { |
675 | SCM p; | |
676 | p = ((port == SCM_UNDEFINED) | |
677 | ? scm_cur_inp | |
678 | : port); | |
679 | if (!(SCM_NIMP (p) && SCM_PORTP (p))) | |
680 | return SCM_BOOL_F; | |
681 | else | |
682 | return SCM_PTAB_ENTRY (p)->file_name; | |
683 | } | |
684 | ||
d14af9f2 | 685 | SCM_PROC (s_set_port_filename_x, "set-port-filename!", 1, 1, 0, scm_set_port_filename_x); |
1cc91f1b | 686 | |
d14af9f2 MD |
687 | SCM |
688 | scm_set_port_filename_x (port, filename) | |
689 | SCM port; | |
690 | SCM filename; | |
d14af9f2 MD |
691 | { |
692 | if (filename == SCM_UNDEFINED) | |
693 | { | |
694 | filename = port; | |
695 | port = scm_cur_inp; | |
696 | } | |
697 | else | |
698 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
699 | port, | |
700 | SCM_ARG1, | |
701 | s_set_port_filename_x); | |
702 | return SCM_PTAB_ENTRY (port)->file_name = filename; | |
703 | } | |
704 | ||
0f2d19dd JB |
705 | #ifndef ttyname |
706 | extern char * ttyname(); | |
707 | #endif | |
708 | ||
1cc91f1b | 709 | |
0f2d19dd JB |
710 | void |
711 | scm_prinport (exp, port, type) | |
712 | SCM exp; | |
713 | SCM port; | |
714 | char *type; | |
0f2d19dd JB |
715 | { |
716 | scm_gen_puts (scm_regular_string, "#<", port); | |
717 | if (SCM_CLOSEDP (exp)) | |
718 | scm_gen_puts (scm_regular_string, "closed: ", port); | |
719 | else | |
720 | { | |
721 | if (SCM_RDNG & SCM_CAR (exp)) | |
722 | scm_gen_puts (scm_regular_string, "input: ", port); | |
723 | if (SCM_WRTNG & SCM_CAR (exp)) | |
724 | scm_gen_puts (scm_regular_string, "output: ", port); | |
725 | } | |
726 | scm_gen_puts (scm_regular_string, type, port); | |
727 | scm_gen_putc (' ', port); | |
728 | #ifndef MSDOS | |
729 | #ifndef __EMX__ | |
730 | #ifndef _DCC | |
731 | #ifndef AMIGA | |
732 | #ifndef THINK_C | |
733 | if (SCM_OPENP (exp) && scm_tc16_fport == SCM_TYP16 (exp) && isatty (fileno ((FILE *)SCM_STREAM (exp)))) | |
734 | scm_gen_puts (scm_regular_string, ttyname (fileno ((FILE *)SCM_STREAM (exp))), port); | |
735 | else | |
736 | #endif | |
737 | #endif | |
738 | #endif | |
739 | #endif | |
740 | #endif | |
741 | if (SCM_OPFPORTP (exp)) | |
742 | scm_intprint ((long) fileno ((FILE *)SCM_STREAM (exp)), 10, port); | |
743 | else | |
744 | scm_intprint (SCM_CDR (exp), 16, port); | |
745 | scm_gen_putc ('>', port); | |
746 | } | |
747 | ||
1cc91f1b | 748 | |
0f2d19dd JB |
749 | void |
750 | scm_ports_prehistory () | |
0f2d19dd JB |
751 | { |
752 | scm_numptob = 0; | |
753 | scm_ptobs = (scm_ptobfuns *) malloc (sizeof (scm_ptobfuns)); | |
754 | ||
755 | /* WARNING: These scm_newptob calls must be done in this order. | |
756 | * They must agree with the port declarations in tags.h. | |
757 | */ | |
758 | /* scm_tc16_fport = */ scm_newptob (&scm_fptob); | |
759 | /* scm_tc16_pipe = */ scm_newptob (&scm_pipob); | |
760 | /* scm_tc16_strport = */ scm_newptob (&scm_stptob); | |
761 | /* scm_tc16_sfport = */ scm_newptob (&scm_sfptob); | |
762 | } | |
763 | \f | |
764 | ||
765 | \f | |
766 | /* {Void Ports} | |
767 | */ | |
768 | ||
769 | int scm_tc16_void_port = 0; | |
770 | ||
771 | static int | |
772 | print_void_port (exp, port, writing) | |
773 | SCM exp; | |
774 | SCM port; | |
775 | int writing; | |
776 | { | |
777 | scm_prinport (exp, port, "void"); | |
778 | return 1; | |
779 | } | |
780 | ||
781 | static int | |
782 | putc_void_port (c, strm) | |
783 | int c; | |
784 | SCM strm; | |
785 | { | |
786 | return 0; /* vestigial return value */ | |
787 | } | |
788 | ||
789 | static int | |
790 | puts_void_port (s, strm) | |
791 | char * s; | |
792 | SCM strm; | |
793 | { | |
794 | return 0; /* vestigial return value */ | |
795 | } | |
796 | ||
797 | static scm_sizet | |
798 | write_void_port (ptr, size, nitems, strm) | |
799 | void * ptr; | |
800 | int size; | |
801 | int nitems; | |
802 | SCM strm; | |
803 | { | |
804 | int len; | |
805 | len = size * nitems; | |
806 | return len; | |
807 | } | |
808 | ||
1cc91f1b JB |
809 | |
810 | static int flush_void_port SCM_P ((SCM strm)); | |
811 | ||
0f2d19dd JB |
812 | static int |
813 | flush_void_port (strm) | |
814 | SCM strm; | |
0f2d19dd JB |
815 | { |
816 | return 0; | |
817 | } | |
818 | ||
1cc91f1b JB |
819 | |
820 | static int getc_void_port SCM_P ((SCM strm)); | |
821 | ||
0f2d19dd JB |
822 | static int |
823 | getc_void_port (strm) | |
824 | SCM strm; | |
0f2d19dd JB |
825 | { |
826 | return EOF; | |
827 | } | |
828 | ||
1cc91f1b JB |
829 | |
830 | static int close_void_port SCM_P ((SCM strm)); | |
831 | ||
0f2d19dd JB |
832 | static int |
833 | close_void_port (strm) | |
834 | SCM strm; | |
0f2d19dd JB |
835 | { |
836 | return 0; /* this is ignored by scm_close_port. */ | |
837 | } | |
838 | ||
839 | ||
1cc91f1b JB |
840 | |
841 | static int noop0 SCM_P ((SCM stream)); | |
842 | ||
0f2d19dd JB |
843 | static int |
844 | noop0 (stream) | |
1cc91f1b | 845 | SCM stream; |
0f2d19dd JB |
846 | { |
847 | return 0; | |
848 | } | |
849 | ||
850 | ||
851 | static struct scm_ptobfuns void_port_ptob = | |
852 | { | |
853 | scm_mark0, | |
854 | noop0, | |
855 | print_void_port, | |
856 | 0, /* equal? */ | |
857 | putc_void_port, | |
858 | puts_void_port, | |
859 | write_void_port, | |
860 | flush_void_port, | |
861 | getc_void_port, | |
862 | close_void_port, | |
863 | }; | |
864 | ||
865 | \f | |
866 | ||
1cc91f1b | 867 | |
0f2d19dd JB |
868 | SCM |
869 | scm_void_port (mode_str) | |
870 | char * mode_str; | |
0f2d19dd JB |
871 | { |
872 | int mode_bits; | |
873 | SCM answer; | |
874 | struct scm_port_table * pt; | |
875 | ||
876 | SCM_NEWCELL (answer); | |
877 | SCM_DEFER_INTS; | |
878 | mode_bits = scm_mode_bits (mode_str); | |
879 | pt = scm_add_to_port_table (answer); | |
898a256f | 880 | SCM_SETCAR (answer, scm_tc16_void_port | mode_bits); |
0f2d19dd JB |
881 | SCM_SETPTAB_ENTRY (answer, pt); |
882 | SCM_SETSTREAM (answer, SCM_BOOL_F); | |
883 | SCM_ALLOW_INTS; | |
884 | return answer; | |
885 | } | |
886 | ||
887 | ||
888 | SCM_PROC (s_sys_make_void_port, "%make-void-port", 1, 0, 0, scm_sys_make_void_port); | |
1cc91f1b | 889 | |
0f2d19dd JB |
890 | SCM |
891 | scm_sys_make_void_port (mode) | |
892 | SCM mode; | |
0f2d19dd JB |
893 | { |
894 | SCM_ASSERT (SCM_NIMP (mode) && SCM_STRINGP (mode), mode, | |
895 | SCM_ARG1, s_sys_make_void_port); | |
896 | ||
897 | return scm_void_port (SCM_ROCHARS (mode)); | |
898 | } | |
899 | ||
900 | ||
901 | ||
902 | \f | |
903 | ||
1cc91f1b | 904 | |
0f2d19dd JB |
905 | void |
906 | scm_init_ports () | |
0f2d19dd JB |
907 | { |
908 | scm_tc16_void_port = scm_newptob (&void_port_ptob); | |
909 | #include "ports.x" | |
910 | } | |
911 |