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7dc6e754 | 1 | /* Copyright (C) 1995,1996,1997,1998 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 | 41 | \f |
d68fee48 JB |
42 | /* Headers. */ |
43 | ||
0f2d19dd JB |
44 | #include <stdio.h> |
45 | #include "_scm.h" | |
20e6290e JB |
46 | #include "genio.h" |
47 | #include "chars.h" | |
0f2d19dd | 48 | |
20e6290e | 49 | #include "markers.h" |
5d09ff4e | 50 | #include "filesys.h" |
20e6290e JB |
51 | #include "fports.h" |
52 | #include "strports.h" | |
53 | #include "vports.h" | |
89ea5b7c | 54 | #include "kw.h" |
20e6290e JB |
55 | |
56 | #include "ports.h" | |
0f2d19dd JB |
57 | |
58 | #ifdef HAVE_MALLOC_H | |
95b88819 | 59 | #include <malloc.h> |
0f2d19dd JB |
60 | #endif |
61 | ||
62 | #ifdef HAVE_UNISTD_H | |
63 | #include <unistd.h> | |
64 | #endif | |
65 | ||
95b88819 GH |
66 | #ifdef HAVE_SYS_IOCTL_H |
67 | #include <sys/ioctl.h> | |
68 | #endif | |
d68fee48 | 69 | |
0f2d19dd | 70 | \f |
d68fee48 | 71 | /* The port kind table --- a dynamically resized array of port types. */ |
0f2d19dd JB |
72 | |
73 | ||
74 | /* scm_ptobs scm_numptob | |
75 | * implement a dynamicly resized array of ptob records. | |
76 | * Indexes into this table are used when generating type | |
77 | * tags for smobjects (if you know a tag you can get an index and conversely). | |
78 | */ | |
79 | scm_ptobfuns *scm_ptobs; | |
a1c95c45 | 80 | int scm_numptob; |
0f2d19dd | 81 | |
1cc91f1b | 82 | |
0f2d19dd JB |
83 | SCM |
84 | scm_markstream (ptr) | |
85 | SCM ptr; | |
0f2d19dd JB |
86 | { |
87 | int openp; | |
0f2d19dd | 88 | openp = SCM_CAR (ptr) & SCM_OPN; |
0f2d19dd JB |
89 | if (openp) |
90 | return SCM_STREAM (ptr); | |
91 | else | |
92 | return SCM_BOOL_F; | |
93 | } | |
94 | ||
95 | ||
1cc91f1b | 96 | |
0f2d19dd JB |
97 | long |
98 | scm_newptob (ptob) | |
99 | scm_ptobfuns *ptob; | |
0f2d19dd JB |
100 | { |
101 | char *tmp; | |
102 | if (255 <= scm_numptob) | |
103 | goto ptoberr; | |
104 | SCM_DEFER_INTS; | |
105 | SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_ptobs, (1 + scm_numptob) * sizeof (scm_ptobfuns))); | |
106 | if (tmp) | |
107 | { | |
108 | scm_ptobs = (scm_ptobfuns *) tmp; | |
109 | scm_ptobs[scm_numptob].mark = ptob->mark; | |
110 | scm_ptobs[scm_numptob].free = ptob->free; | |
111 | scm_ptobs[scm_numptob].print = ptob->print; | |
112 | scm_ptobs[scm_numptob].equalp = ptob->equalp; | |
113 | scm_ptobs[scm_numptob].fputc = ptob->fputc; | |
114 | scm_ptobs[scm_numptob].fputs = ptob->fputs; | |
115 | scm_ptobs[scm_numptob].fwrite = ptob->fwrite; | |
116 | scm_ptobs[scm_numptob].fflush = ptob->fflush; | |
117 | scm_ptobs[scm_numptob].fgetc = ptob->fgetc; | |
3cb988bd | 118 | scm_ptobs[scm_numptob].fgets = ptob->fgets; |
0f2d19dd JB |
119 | scm_ptobs[scm_numptob].fclose = ptob->fclose; |
120 | scm_numptob++; | |
121 | } | |
122 | SCM_ALLOW_INTS; | |
123 | if (!tmp) | |
124 | ptoberr:scm_wta (SCM_MAKINUM ((long) scm_numptob), (char *) SCM_NALLOC, "newptob"); | |
125 | return scm_tc7_port + (scm_numptob - 1) * 256; | |
126 | } | |
127 | ||
128 | \f | |
0f2d19dd | 129 | |
44493941 | 130 | SCM_PROC(s_char_ready_p, "char-ready?", 0, 1, 0, scm_char_ready_p); |
1cc91f1b | 131 | |
0f2d19dd JB |
132 | SCM |
133 | scm_char_ready_p (port) | |
134 | SCM port; | |
0f2d19dd JB |
135 | { |
136 | if (SCM_UNBNDP (port)) | |
137 | port = scm_cur_inp; | |
138 | else | |
d68fee48 JB |
139 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, |
140 | s_char_ready_p); | |
141 | ||
0f2d19dd JB |
142 | if (SCM_CRDYP (port) || !SCM_FPORTP (port)) |
143 | return SCM_BOOL_T; | |
5d09ff4e MD |
144 | return (scm_input_waiting_p ((FILE *) SCM_STREAM (port), s_char_ready_p) |
145 | ? SCM_BOOL_T | |
146 | : SCM_BOOL_F); | |
0f2d19dd | 147 | } |
0f2d19dd JB |
148 | |
149 | ||
150 | \f | |
d68fee48 | 151 | /* Standard ports --- current input, output, error, and more(!). */ |
0f2d19dd | 152 | |
0f2d19dd | 153 | SCM_PROC(s_current_input_port, "current-input-port", 0, 0, 0, scm_current_input_port); |
1cc91f1b | 154 | |
0f2d19dd JB |
155 | SCM |
156 | scm_current_input_port () | |
0f2d19dd JB |
157 | { |
158 | return scm_cur_inp; | |
159 | } | |
160 | ||
161 | SCM_PROC(s_current_output_port, "current-output-port", 0, 0, 0, scm_current_output_port); | |
1cc91f1b | 162 | |
0f2d19dd JB |
163 | SCM |
164 | scm_current_output_port () | |
0f2d19dd JB |
165 | { |
166 | return scm_cur_outp; | |
167 | } | |
168 | ||
169 | SCM_PROC(s_current_error_port, "current-error-port", 0, 0, 0, scm_current_error_port); | |
1cc91f1b | 170 | |
0f2d19dd JB |
171 | SCM |
172 | scm_current_error_port () | |
0f2d19dd JB |
173 | { |
174 | return scm_cur_errp; | |
175 | } | |
176 | ||
31614d8e MD |
177 | SCM_PROC(s_current_load_port, "current-load-port", 0, 0, 0, scm_current_load_port); |
178 | ||
179 | SCM | |
180 | scm_current_load_port () | |
181 | { | |
182 | return scm_cur_loadp; | |
183 | } | |
184 | ||
0f2d19dd | 185 | SCM_PROC(s_set_current_input_port, "set-current-input-port", 1, 0, 0, scm_set_current_input_port); |
1cc91f1b | 186 | |
0f2d19dd JB |
187 | SCM |
188 | scm_set_current_input_port (port) | |
189 | SCM port; | |
0f2d19dd JB |
190 | { |
191 | SCM oinp = scm_cur_inp; | |
192 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_set_current_input_port); | |
193 | scm_cur_inp = port; | |
194 | return oinp; | |
195 | } | |
196 | ||
197 | ||
198 | SCM_PROC(s_set_current_output_port, "set-current-output-port", 1, 0, 0, scm_set_current_output_port); | |
1cc91f1b | 199 | |
0f2d19dd JB |
200 | SCM |
201 | scm_set_current_output_port (port) | |
202 | SCM port; | |
0f2d19dd JB |
203 | { |
204 | SCM ooutp = scm_cur_outp; | |
78446828 | 205 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
206 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_output_port); |
207 | scm_cur_outp = port; | |
208 | return ooutp; | |
209 | } | |
210 | ||
211 | ||
212 | SCM_PROC(s_set_current_error_port, "set-current-error-port", 1, 0, 0, scm_set_current_error_port); | |
1cc91f1b | 213 | |
0f2d19dd JB |
214 | SCM |
215 | scm_set_current_error_port (port) | |
216 | SCM port; | |
0f2d19dd JB |
217 | { |
218 | SCM oerrp = scm_cur_errp; | |
78446828 | 219 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
220 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_set_current_error_port); |
221 | scm_cur_errp = port; | |
222 | return oerrp; | |
223 | } | |
224 | ||
225 | \f | |
d68fee48 | 226 | /* The port table --- a table of all the open ports. */ |
0f2d19dd JB |
227 | |
228 | /* Array of open ports, required for reliable MOVE->FDES etc. */ | |
229 | struct scm_port_table **scm_port_table; | |
230 | ||
231 | int scm_port_table_size = 0; /* Number of ports in scm_port_table. */ | |
232 | int scm_port_table_room = 20; /* Size of the array. */ | |
233 | ||
234 | /* Add a port to the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 235 | |
0f2d19dd JB |
236 | struct scm_port_table * |
237 | scm_add_to_port_table (port) | |
238 | SCM port; | |
0f2d19dd JB |
239 | { |
240 | if (scm_port_table_size == scm_port_table_room) | |
241 | { | |
242 | scm_port_table = ((struct scm_port_table **) | |
243 | realloc ((char *) scm_port_table, | |
67fe060e GH |
244 | (scm_sizet) (sizeof (struct scm_port_table *) |
245 | * scm_port_table_room * 2))); | |
0f2d19dd JB |
246 | /* !!! error checking */ |
247 | scm_port_table_room *= 2; | |
248 | } | |
249 | scm_port_table[scm_port_table_size] = ((struct scm_port_table *) | |
250 | scm_must_malloc (sizeof (struct scm_port_table), | |
251 | "system port table")); | |
252 | scm_port_table[scm_port_table_size]->port = port; | |
253 | scm_port_table[scm_port_table_size]->revealed = 0; | |
254 | scm_port_table[scm_port_table_size]->stream = 0; | |
ebf7394e | 255 | scm_port_table[scm_port_table_size]->file_name = SCM_BOOL_F; |
d0defdf3 | 256 | scm_port_table[scm_port_table_size]->line_number = 0; |
0f2d19dd | 257 | scm_port_table[scm_port_table_size]->column_number = 0; |
0f2d19dd JB |
258 | return scm_port_table[scm_port_table_size++]; |
259 | } | |
260 | ||
261 | /* Remove a port from the table. Call with SCM_DEFER_INTS active. */ | |
1cc91f1b | 262 | |
0f2d19dd JB |
263 | void |
264 | scm_remove_from_port_table (port) | |
265 | SCM port; | |
0f2d19dd JB |
266 | { |
267 | int i = 0; | |
268 | while (scm_port_table[i]->port != port) | |
269 | { | |
270 | i++; | |
271 | /* Error if not found: too violent? May occur in GC. */ | |
272 | if (i >= scm_port_table_size) | |
273 | scm_wta (port, "Port not in table", "scm_remove_from_port_table"); | |
274 | } | |
275 | scm_must_free ((char *)scm_port_table[i]); | |
276 | scm_mallocated -= sizeof (*scm_port_table[i]); | |
277 | scm_port_table[i] = scm_port_table[scm_port_table_size - 1]; | |
278 | SCM_SETPTAB_ENTRY (port, 0); | |
279 | scm_port_table_size--; | |
280 | } | |
281 | ||
fea6b4ea | 282 | #ifdef GUILE_DEBUG |
0f2d19dd JB |
283 | /* Undocumented functions for debugging. */ |
284 | /* Return the number of ports in the table. */ | |
1cc91f1b | 285 | |
1146b6cd | 286 | SCM_PROC(s_pt_size, "pt-size", 0, 0, 0, scm_pt_size); |
0f2d19dd JB |
287 | SCM |
288 | scm_pt_size () | |
0f2d19dd JB |
289 | { |
290 | return SCM_MAKINUM (scm_port_table_size); | |
291 | } | |
292 | ||
293 | /* Return the ith member of the port table. */ | |
1146b6cd | 294 | SCM_PROC(s_pt_member, "pt-member", 1, 0, 0, scm_pt_member); |
0f2d19dd JB |
295 | SCM |
296 | scm_pt_member (member) | |
297 | SCM member; | |
0f2d19dd JB |
298 | { |
299 | int i; | |
300 | SCM_ASSERT (SCM_INUMP (member), member, SCM_ARG1, s_pt_member); | |
301 | i = SCM_INUM (member); | |
302 | if (i < 0 || i >= scm_port_table_size) | |
303 | return SCM_BOOL_F; | |
304 | else | |
305 | return scm_port_table[i]->port; | |
306 | } | |
307 | #endif | |
308 | ||
309 | ||
d68fee48 JB |
310 | \f |
311 | /* Revealed counts --- an oddity inherited from SCSH. */ | |
312 | ||
8b13c6b3 GH |
313 | /* Find a port in the table and return its revealed count. |
314 | Also used by the garbage collector. | |
0f2d19dd | 315 | */ |
1cc91f1b | 316 | |
0f2d19dd JB |
317 | int |
318 | scm_revealed_count (port) | |
319 | SCM port; | |
0f2d19dd JB |
320 | { |
321 | return SCM_REVEALED(port); | |
322 | } | |
323 | ||
324 | ||
325 | ||
326 | /* Return the revealed count for a port. */ | |
327 | ||
328 | SCM_PROC(s_port_revealed, "port-revealed", 1, 0, 0, scm_port_revealed); | |
1cc91f1b | 329 | |
0f2d19dd JB |
330 | SCM |
331 | scm_port_revealed (port) | |
332 | SCM port; | |
0f2d19dd | 333 | { |
78446828 | 334 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd | 335 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_port_revealed); |
8b13c6b3 | 336 | return SCM_MAKINUM (scm_revealed_count (port)); |
0f2d19dd JB |
337 | } |
338 | ||
339 | /* Set the revealed count for a port. */ | |
340 | SCM_PROC(s_set_port_revealed_x, "set-port-revealed!", 2, 0, 0, scm_set_port_revealed_x); | |
1cc91f1b | 341 | |
0f2d19dd JB |
342 | SCM |
343 | scm_set_port_revealed_x (port, rcount) | |
344 | SCM port; | |
345 | SCM rcount; | |
0f2d19dd | 346 | { |
78446828 | 347 | port = SCM_COERCE_OUTPORT (port); |
0f2d19dd JB |
348 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_set_port_revealed_x); |
349 | SCM_ASSERT (SCM_INUMP (rcount), rcount, SCM_ARG2, s_set_port_revealed_x); | |
350 | SCM_DEFER_INTS; | |
351 | SCM_REVEALED (port) = SCM_INUM (rcount); | |
352 | SCM_ALLOW_INTS; | |
8b13c6b3 | 353 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
354 | } |
355 | ||
d68fee48 JB |
356 | |
357 | \f | |
358 | /* Retrieving a port's mode. */ | |
359 | ||
eadd48de GH |
360 | /* Return the flags that characterize a port based on the mode |
361 | * string used to open a file for that port. | |
362 | * | |
363 | * See PORT FLAGS in scm.h | |
364 | */ | |
365 | ||
366 | long | |
367 | scm_mode_bits (modes) | |
368 | char *modes; | |
369 | { | |
370 | return (SCM_OPN | |
371 | | (strchr (modes, 'r') || strchr (modes, '+') ? SCM_RDNG : 0) | |
372 | | ( strchr (modes, 'w') | |
373 | || strchr (modes, 'a') | |
374 | || strchr (modes, '+') ? SCM_WRTNG : 0) | |
375 | | (strchr (modes, '0') ? SCM_BUF0 : 0)); | |
376 | } | |
377 | ||
378 | ||
379 | /* Return the mode flags from an open port. | |
380 | * Some modes such as "append" are only used when opening | |
381 | * a file and are not returned here. */ | |
382 | ||
383 | SCM_PROC(s_port_mode, "port-mode", 1, 0, 0, scm_port_mode); | |
384 | ||
385 | SCM | |
386 | scm_port_mode (port) | |
387 | SCM port; | |
388 | { | |
389 | char modes[3]; | |
390 | modes[0] = '\0'; | |
78446828 MV |
391 | |
392 | port = SCM_COERCE_OUTPORT (port); | |
eadd48de GH |
393 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1, s_port_mode); |
394 | if (SCM_CAR (port) & SCM_RDNG) { | |
395 | if (SCM_CAR (port) & SCM_WRTNG) | |
396 | strcpy (modes, "r+"); | |
397 | else | |
398 | strcpy (modes, "r"); | |
399 | } | |
400 | else if (SCM_CAR (port) & SCM_WRTNG) | |
401 | strcpy (modes, "w"); | |
402 | if (SCM_CAR (port) & SCM_BUF0) | |
403 | strcat (modes, "0"); | |
404 | return scm_makfromstr (modes, strlen (modes), 0); | |
405 | } | |
406 | ||
407 | ||
d68fee48 JB |
408 | \f |
409 | /* Closing ports. */ | |
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 | 433 | { |
0f88a8f3 | 434 | SCM_SYSCALL (rv = (scm_ptobs[i].fclose) (port)); |
eadd48de GH |
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 | ||
d68fee48 JB |
481 | |
482 | \f | |
483 | /* Utter miscellany. Gosh, we should clean this up some time. */ | |
484 | ||
0f2d19dd | 485 | SCM_PROC(s_input_port_p, "input-port?", 1, 0, 0, scm_input_port_p); |
1cc91f1b | 486 | |
0f2d19dd JB |
487 | SCM |
488 | scm_input_port_p (x) | |
489 | SCM x; | |
0f2d19dd JB |
490 | { |
491 | if (SCM_IMP (x)) | |
492 | return SCM_BOOL_F; | |
493 | return SCM_INPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
494 | } | |
495 | ||
496 | SCM_PROC(s_output_port_p, "output-port?", 1, 0, 0, scm_output_port_p); | |
1cc91f1b | 497 | |
0f2d19dd JB |
498 | SCM |
499 | scm_output_port_p (x) | |
500 | SCM x; | |
0f2d19dd JB |
501 | { |
502 | if (SCM_IMP (x)) | |
503 | return SCM_BOOL_F; | |
504 | return SCM_OUTPORTP (x) ? SCM_BOOL_T : SCM_BOOL_F; | |
505 | } | |
506 | ||
507 | ||
508 | SCM_PROC(s_eof_object_p, "eof-object?", 1, 0, 0, scm_eof_object_p); | |
1cc91f1b | 509 | |
0f2d19dd JB |
510 | SCM |
511 | scm_eof_object_p (x) | |
512 | SCM x; | |
0f2d19dd | 513 | { |
0c32d76c | 514 | return SCM_EOF_OBJECT_P (x) ? SCM_BOOL_T : SCM_BOOL_F; |
0f2d19dd JB |
515 | } |
516 | ||
517 | SCM_PROC(s_force_output, "force-output", 0, 1, 0, scm_force_output); | |
1cc91f1b | 518 | |
0f2d19dd JB |
519 | SCM |
520 | scm_force_output (port) | |
521 | SCM port; | |
0f2d19dd JB |
522 | { |
523 | if (SCM_UNBNDP (port)) | |
3e877d15 | 524 | port = scm_cur_outp; |
0f2d19dd | 525 | else |
78446828 MV |
526 | { |
527 | port = SCM_COERCE_OUTPORT (port); | |
3e877d15 JB |
528 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, |
529 | s_force_output); | |
78446828 | 530 | } |
0f2d19dd JB |
531 | { |
532 | scm_sizet i = SCM_PTOBNUM (port); | |
0f88a8f3 | 533 | SCM_SYSCALL ((scm_ptobs[i].fflush) (port)); |
0f2d19dd JB |
534 | return SCM_UNSPECIFIED; |
535 | } | |
536 | } | |
537 | ||
9c29ac66 | 538 | SCM_PROC (s_flush_all_ports, "flush-all-ports", 0, 0, 0, scm_flush_all_ports); |
89ea5b7c GH |
539 | SCM |
540 | scm_flush_all_ports (void) | |
541 | { | |
542 | int i; | |
543 | ||
544 | for (i = 0; i < scm_port_table_size; i++) | |
545 | { | |
546 | SCM port = scm_port_table[i]->port; | |
547 | if (SCM_OPOUTPORTP (port)) | |
548 | { | |
549 | scm_sizet ptob = SCM_PTOBNUM (port); | |
0f88a8f3 | 550 | (scm_ptobs[ptob].fflush) (port); |
89ea5b7c GH |
551 | } |
552 | } | |
553 | return SCM_UNSPECIFIED; | |
554 | } | |
0f2d19dd JB |
555 | |
556 | SCM_PROC(s_read_char, "read-char", 0, 1, 0, scm_read_char); | |
1cc91f1b | 557 | |
0f2d19dd JB |
558 | SCM |
559 | scm_read_char (port) | |
560 | SCM port; | |
0f2d19dd JB |
561 | { |
562 | int c; | |
563 | if (SCM_UNBNDP (port)) | |
334341aa | 564 | port = scm_cur_inp; |
0f2d19dd JB |
565 | else |
566 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_read_char); | |
b7f3516f | 567 | c = scm_getc (port); |
0f2d19dd JB |
568 | if (EOF == c) |
569 | return SCM_EOF_VAL; | |
570 | return SCM_MAKICHR (c); | |
571 | } | |
572 | ||
573 | ||
574 | SCM_PROC(s_peek_char, "peek-char", 0, 1, 0, scm_peek_char); | |
1cc91f1b | 575 | |
0f2d19dd JB |
576 | SCM |
577 | scm_peek_char (port) | |
578 | SCM port; | |
0f2d19dd JB |
579 | { |
580 | int c; | |
581 | if (SCM_UNBNDP (port)) | |
582 | port = scm_cur_inp; | |
583 | else | |
584 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG1, s_peek_char); | |
b7f3516f | 585 | c = scm_getc (port); |
0f2d19dd JB |
586 | if (EOF == c) |
587 | return SCM_EOF_VAL; | |
b7f3516f | 588 | scm_ungetc (c, port); |
0f2d19dd JB |
589 | return SCM_MAKICHR (c); |
590 | } | |
591 | ||
3cb988bd TP |
592 | /* |
593 | * A generic fgets method. We supply this method so that ports which | |
594 | * can't use fgets(3) (like string ports or soft ports) can still use | |
595 | * line-based i/o. The generic method calls the port's own fgetc method | |
596 | * for input. It should be possible to write a more efficient | |
597 | * method for any given port representation -- this is supplied just | |
598 | * to ensure that you don't have to. | |
599 | */ | |
600 | ||
848f2a01 | 601 | char * scm_generic_fgets SCM_P ((SCM port, int *len)); |
3cb988bd TP |
602 | |
603 | char * | |
848f2a01 | 604 | scm_generic_fgets (port, len) |
3cb988bd | 605 | SCM port; |
848f2a01 | 606 | int *len; |
3cb988bd | 607 | { |
3cb988bd TP |
608 | scm_sizet p = SCM_PTOBNUM (port); |
609 | ||
848f2a01 | 610 | char *buf; |
3cb988bd TP |
611 | int limit = 80; /* current size of buffer */ |
612 | int c; | |
613 | ||
848f2a01 | 614 | /* FIXME: It would be nice to be able to check for EOF before anything. */ |
3cb988bd | 615 | |
848f2a01 | 616 | *len = 0; |
3e2043c4 TP |
617 | buf = (char *) malloc (limit * sizeof(char)); |
618 | ||
619 | /* If a char has been pushed onto the port with scm_ungetc, | |
620 | read that first. */ | |
621 | if (SCM_CRDYP (port)) | |
622 | { | |
848f2a01 | 623 | buf[*len] = SCM_CGETUN (port); |
3e2043c4 | 624 | SCM_CLRDY (port); |
848f2a01 | 625 | if (buf[(*len)++] == '\n') |
3e2043c4 | 626 | { |
848f2a01 | 627 | buf[*len] = '\0'; |
3e2043c4 TP |
628 | return buf; |
629 | } | |
630 | } | |
3cb988bd TP |
631 | |
632 | while (1) { | |
848f2a01 | 633 | if (*len >= limit-1) |
3cb988bd | 634 | { |
3e2043c4 | 635 | buf = (char *) realloc (buf, sizeof(char) * limit * 2); |
3cb988bd TP |
636 | limit *= 2; |
637 | } | |
638 | ||
0f88a8f3 | 639 | c = (scm_ptobs[p].fgetc) (port); |
3cb988bd | 640 | if (c != EOF) |
848f2a01 | 641 | buf[(*len)++] = c; |
3cb988bd TP |
642 | |
643 | if (c == EOF || c == '\n') | |
644 | { | |
848f2a01 | 645 | if (*len) |
3cb988bd | 646 | { |
848f2a01 | 647 | buf[*len] = '\0'; |
3cb988bd TP |
648 | return buf; |
649 | } | |
3e2043c4 | 650 | free (buf); |
3cb988bd TP |
651 | return NULL; |
652 | } | |
653 | } | |
654 | } | |
655 | ||
0f2d19dd | 656 | SCM_PROC (s_unread_char, "unread-char", 2, 0, 0, scm_unread_char); |
1cc91f1b | 657 | |
0f2d19dd JB |
658 | SCM |
659 | scm_unread_char (cobj, port) | |
660 | SCM cobj; | |
661 | SCM port; | |
0f2d19dd JB |
662 | { |
663 | int c; | |
664 | ||
665 | SCM_ASSERT (SCM_ICHRP (cobj), cobj, SCM_ARG1, s_unread_char); | |
666 | ||
667 | if (SCM_UNBNDP (port)) | |
668 | port = scm_cur_inp; | |
669 | else | |
670 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPINPORTP (port), port, SCM_ARG2, s_unread_char); | |
671 | ||
672 | ||
673 | c = SCM_ICHR (cobj); | |
674 | ||
b7f3516f | 675 | scm_ungetc (c, port); |
0f2d19dd JB |
676 | return cobj; |
677 | } | |
678 | ||
360fc44c | 679 | SCM_PROC (s_port_line, "port-line", 1, 0, 0, scm_port_line); |
1cc91f1b | 680 | |
0f2d19dd | 681 | SCM |
d14af9f2 | 682 | scm_port_line (port) |
0f2d19dd | 683 | SCM port; |
0f2d19dd | 684 | { |
78446828 | 685 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
686 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
687 | port, | |
688 | SCM_ARG1, | |
689 | s_port_line); | |
690 | return SCM_MAKINUM (SCM_LINUM (port)); | |
0f2d19dd JB |
691 | } |
692 | ||
360fc44c | 693 | SCM_PROC (s_set_port_line_x, "set-port-line!", 2, 0, 0, scm_set_port_line_x); |
d043d8c2 MD |
694 | |
695 | SCM | |
696 | scm_set_port_line_x (port, line) | |
697 | SCM port; | |
698 | SCM line; | |
699 | { | |
360fc44c MD |
700 | port = SCM_COERCE_OUTPORT (port); |
701 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
702 | port, | |
703 | SCM_ARG1, | |
704 | s_set_port_line_x); | |
705 | SCM_ASSERT (SCM_INUMP (line), line, SCM_ARG2, s_set_port_line_x); | |
d043d8c2 MD |
706 | return SCM_PTAB_ENTRY (port)->line_number = SCM_INUM (line); |
707 | } | |
708 | ||
360fc44c | 709 | SCM_PROC (s_port_column, "port-column", 1, 0, 0, scm_port_column); |
1cc91f1b | 710 | |
0f2d19dd | 711 | SCM |
d14af9f2 | 712 | scm_port_column (port) |
0f2d19dd | 713 | SCM port; |
0f2d19dd | 714 | { |
78446828 | 715 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
716 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
717 | port, | |
718 | SCM_ARG1, | |
719 | s_port_column); | |
720 | return SCM_MAKINUM (SCM_COL (port)); | |
0f2d19dd JB |
721 | } |
722 | ||
360fc44c | 723 | SCM_PROC (s_set_port_column_x, "set-port-column!", 2, 0, 0, scm_set_port_column_x); |
d043d8c2 MD |
724 | |
725 | SCM | |
726 | scm_set_port_column_x (port, column) | |
727 | SCM port; | |
728 | SCM column; | |
729 | { | |
360fc44c MD |
730 | port = SCM_COERCE_OUTPORT (port); |
731 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
732 | port, | |
733 | SCM_ARG1, | |
734 | s_set_port_column_x); | |
735 | SCM_ASSERT (SCM_INUMP (column), column, SCM_ARG2, s_set_port_column_x); | |
d043d8c2 MD |
736 | return SCM_PTAB_ENTRY (port)->column_number = SCM_INUM (column); |
737 | } | |
738 | ||
360fc44c | 739 | SCM_PROC (s_port_filename, "port-filename", 1, 0, 0, scm_port_filename); |
1cc91f1b | 740 | |
0f2d19dd | 741 | SCM |
d14af9f2 | 742 | scm_port_filename (port) |
0f2d19dd | 743 | SCM port; |
0f2d19dd | 744 | { |
78446828 | 745 | port = SCM_COERCE_OUTPORT (port); |
360fc44c MD |
746 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), |
747 | port, | |
748 | SCM_ARG1, | |
749 | s_port_filename); | |
750 | return SCM_PTAB_ENTRY (port)->file_name; | |
0f2d19dd JB |
751 | } |
752 | ||
360fc44c | 753 | SCM_PROC (s_set_port_filename_x, "set-port-filename!", 2, 0, 0, scm_set_port_filename_x); |
1cc91f1b | 754 | |
d14af9f2 MD |
755 | SCM |
756 | scm_set_port_filename_x (port, filename) | |
757 | SCM port; | |
758 | SCM filename; | |
d14af9f2 | 759 | { |
360fc44c MD |
760 | port = SCM_COERCE_OUTPORT (port); |
761 | SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port) && SCM_OPENP (port), | |
762 | port, | |
763 | SCM_ARG1, | |
764 | s_set_port_filename_x); | |
765 | /* We allow the user to set the filename to whatever he likes. */ | |
d14af9f2 MD |
766 | return SCM_PTAB_ENTRY (port)->file_name = filename; |
767 | } | |
768 | ||
0f2d19dd JB |
769 | #ifndef ttyname |
770 | extern char * ttyname(); | |
771 | #endif | |
772 | ||
1cc91f1b | 773 | |
0f2d19dd JB |
774 | void |
775 | scm_prinport (exp, port, type) | |
776 | SCM exp; | |
777 | SCM port; | |
778 | char *type; | |
0f2d19dd | 779 | { |
b7f3516f | 780 | scm_puts ("#<", port); |
0f2d19dd | 781 | if (SCM_CLOSEDP (exp)) |
b7f3516f | 782 | scm_puts ("closed: ", port); |
0f2d19dd JB |
783 | else |
784 | { | |
785 | if (SCM_RDNG & SCM_CAR (exp)) | |
b7f3516f | 786 | scm_puts ("input: ", port); |
0f2d19dd | 787 | if (SCM_WRTNG & SCM_CAR (exp)) |
b7f3516f | 788 | scm_puts ("output: ", port); |
0f2d19dd | 789 | } |
b7f3516f TT |
790 | scm_puts (type, port); |
791 | scm_putc (' ', port); | |
0f2d19dd JB |
792 | #ifndef MSDOS |
793 | #ifndef __EMX__ | |
794 | #ifndef _DCC | |
795 | #ifndef AMIGA | |
796 | #ifndef THINK_C | |
797 | if (SCM_OPENP (exp) && scm_tc16_fport == SCM_TYP16 (exp) && isatty (fileno ((FILE *)SCM_STREAM (exp)))) | |
b7f3516f | 798 | scm_puts (ttyname (fileno ((FILE *)SCM_STREAM (exp))), port); |
0f2d19dd JB |
799 | else |
800 | #endif | |
801 | #endif | |
802 | #endif | |
803 | #endif | |
804 | #endif | |
805 | if (SCM_OPFPORTP (exp)) | |
806 | scm_intprint ((long) fileno ((FILE *)SCM_STREAM (exp)), 10, port); | |
807 | else | |
808 | scm_intprint (SCM_CDR (exp), 16, port); | |
b7f3516f | 809 | scm_putc ('>', port); |
0f2d19dd JB |
810 | } |
811 | ||
1cc91f1b | 812 | |
0f2d19dd JB |
813 | void |
814 | scm_ports_prehistory () | |
0f2d19dd JB |
815 | { |
816 | scm_numptob = 0; | |
817 | scm_ptobs = (scm_ptobfuns *) malloc (sizeof (scm_ptobfuns)); | |
818 | ||
819 | /* WARNING: These scm_newptob calls must be done in this order. | |
820 | * They must agree with the port declarations in tags.h. | |
821 | */ | |
822 | /* scm_tc16_fport = */ scm_newptob (&scm_fptob); | |
823 | /* scm_tc16_pipe = */ scm_newptob (&scm_pipob); | |
824 | /* scm_tc16_strport = */ scm_newptob (&scm_stptob); | |
825 | /* scm_tc16_sfport = */ scm_newptob (&scm_sfptob); | |
826 | } | |
0f2d19dd JB |
827 | |
828 | \f | |
d68fee48 | 829 | /* Void ports. */ |
0f2d19dd JB |
830 | |
831 | int scm_tc16_void_port = 0; | |
832 | ||
833 | static int | |
38cb0e9c | 834 | print_void_port (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd JB |
835 | { |
836 | scm_prinport (exp, port, "void"); | |
837 | return 1; | |
838 | } | |
839 | ||
840 | static int | |
0f88a8f3 | 841 | putc_void_port (int c, SCM port) |
0f2d19dd JB |
842 | { |
843 | return 0; /* vestigial return value */ | |
844 | } | |
845 | ||
846 | static int | |
0f88a8f3 | 847 | puts_void_port (char *s, SCM port) |
0f2d19dd JB |
848 | { |
849 | return 0; /* vestigial return value */ | |
850 | } | |
851 | ||
852 | static scm_sizet | |
0f88a8f3 | 853 | write_void_port (char *ptr, scm_sizet size, scm_sizet nitems, SCM port) |
0f2d19dd JB |
854 | { |
855 | int len; | |
856 | len = size * nitems; | |
857 | return len; | |
858 | } | |
859 | ||
1cc91f1b | 860 | |
0f2d19dd | 861 | static int |
0f88a8f3 | 862 | flush_void_port (SCM port) |
0f2d19dd JB |
863 | { |
864 | return 0; | |
865 | } | |
866 | ||
1cc91f1b | 867 | |
0f2d19dd | 868 | static int |
0f88a8f3 | 869 | getc_void_port (SCM port) |
0f2d19dd JB |
870 | { |
871 | return EOF; | |
872 | } | |
873 | ||
3cb988bd | 874 | static char * |
0f88a8f3 | 875 | fgets_void_port (SCM port, int *len) |
3cb988bd TP |
876 | { |
877 | return NULL; | |
878 | } | |
1cc91f1b | 879 | |
0f2d19dd | 880 | static int |
0f88a8f3 | 881 | close_void_port (SCM port) |
0f2d19dd JB |
882 | { |
883 | return 0; /* this is ignored by scm_close_port. */ | |
884 | } | |
885 | ||
886 | ||
1cc91f1b | 887 | |
0f2d19dd | 888 | static int |
38cb0e9c | 889 | noop0 (SCM stream) |
0f2d19dd JB |
890 | { |
891 | return 0; | |
892 | } | |
893 | ||
894 | ||
0f88a8f3 | 895 | static struct scm_ptobfuns void_port_ptob = |
0f2d19dd | 896 | { |
dc53f026 | 897 | 0, |
0f2d19dd JB |
898 | noop0, |
899 | print_void_port, | |
900 | 0, /* equal? */ | |
901 | putc_void_port, | |
902 | puts_void_port, | |
903 | write_void_port, | |
904 | flush_void_port, | |
905 | getc_void_port, | |
3cb988bd | 906 | fgets_void_port, |
0f2d19dd JB |
907 | close_void_port, |
908 | }; | |
909 | ||
0f2d19dd JB |
910 | SCM |
911 | scm_void_port (mode_str) | |
912 | char * mode_str; | |
0f2d19dd JB |
913 | { |
914 | int mode_bits; | |
915 | SCM answer; | |
916 | struct scm_port_table * pt; | |
917 | ||
918 | SCM_NEWCELL (answer); | |
919 | SCM_DEFER_INTS; | |
920 | mode_bits = scm_mode_bits (mode_str); | |
921 | pt = scm_add_to_port_table (answer); | |
898a256f | 922 | SCM_SETCAR (answer, scm_tc16_void_port | mode_bits); |
0f2d19dd JB |
923 | SCM_SETPTAB_ENTRY (answer, pt); |
924 | SCM_SETSTREAM (answer, SCM_BOOL_F); | |
925 | SCM_ALLOW_INTS; | |
926 | return answer; | |
927 | } | |
928 | ||
929 | ||
930 | SCM_PROC (s_sys_make_void_port, "%make-void-port", 1, 0, 0, scm_sys_make_void_port); | |
1cc91f1b | 931 | |
0f2d19dd JB |
932 | SCM |
933 | scm_sys_make_void_port (mode) | |
934 | SCM mode; | |
0f2d19dd | 935 | { |
89958ad0 | 936 | SCM_ASSERT (SCM_NIMP (mode) && SCM_ROSTRINGP (mode), mode, |
0f2d19dd JB |
937 | SCM_ARG1, s_sys_make_void_port); |
938 | ||
89958ad0 | 939 | SCM_COERCE_SUBSTR (mode); |
0f2d19dd JB |
940 | return scm_void_port (SCM_ROCHARS (mode)); |
941 | } | |
942 | ||
943 | ||
944 | ||
945 | \f | |
89545eba | 946 | /* Initialization. */ |
1cc91f1b | 947 | |
0f2d19dd JB |
948 | void |
949 | scm_init_ports () | |
0f2d19dd JB |
950 | { |
951 | scm_tc16_void_port = scm_newptob (&void_port_ptob); | |
952 | #include "ports.x" | |
953 | } | |
954 |