Mercurial > hg > xemacs-beta
annotate src/termcap.c @ 5139:a48ef26d87ee
Clean up prototypes for Lisp variables/symbols. Put decls for them with
the other stuff related to the file they're in. In the process, fix a few
places with incorrect initialization of symbols and variables.
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-03-12 Ben Wing <ben@xemacs.org>
* lisp.h:
* lisp.h (redo-symbols): Removed.
Put the Lisp variables and symbols where they belong, with other
stuff related to the file they're in.
* event-Xt.c (THIS_IS_X):
* event-Xt.c (syms_of_event_Xt):
* event-Xt.c (reinit_vars_of_event_Xt):
* event-gtk.c:
* event-gtk.c (syms_of_event_gtk):
* event-gtk.c (reinit_vars_of_event_gtk):
* event-stream.c:
* event-stream.c (syms_of_event_stream):
* event-stream.c (reinit_vars_of_event_stream):
* events.c (reinit_vars_of_events):
* events.c (vars_of_events):
`sans-modifiers' was defsymbol'ed more than once. Move it to
events-stream.c. `self-insert-command' was defsymbol'ed more than once.
Vevent_resource should be staticpro_nodump()ed as it's declared in
a reinit_*() method.
* lread.c (vars_of_lread):
Vfile_domain wasn't staticpro'ed.
* minibuf.c:
* minibuf.c (reinit_complex_vars_of_minibuf):
Vminibuffer_zero and Vecho_area_buffer weren't staticpro'ed.
author | Ben Wing <ben@xemacs.org> |
---|---|
date | Fri, 12 Mar 2010 20:23:50 -0600 |
parents | 16112448d484 |
children | dd2976af8783 |
rev | line source |
---|---|
428 | 1 /* Work-alike for termcap, plus extra features. |
2 Copyright (C) 1985, 1986, 1993 Free Software Foundation, Inc. | |
771 | 3 Copyright (C) 2001 Ben Wing. |
428 | 4 |
5 This file is part of XEmacs. | |
6 | |
7 XEmacs is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
9 Free Software Foundation; either version 2, or (at your option) any | |
10 later version. | |
11 | |
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with XEmacs; see the file COPYING. If not, write to | |
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 Boston, MA 02111-1307, USA. */ | |
21 | |
22 /* Synched up with: Not synched with FSF. */ | |
23 | |
24 /* config.h may rename various library functions such as malloc. */ | |
25 #ifdef emacs | |
26 #include <config.h> | |
27 #include "lisp.h" /* For encapsulated open, close, read */ | |
28 #include "device.h" /* For DEVICE_BAUD_RATE */ | |
29 #else /* not emacs */ | |
30 | |
31 #include <stdlib.h> | |
32 #include <string.h> | |
33 | |
34 #ifdef HAVE_UNISTD_H | |
35 #include <unistd.h> | |
36 #endif | |
37 #ifdef _POSIX_VERSION | |
38 #include <fcntl.h> | |
39 #endif | |
40 | |
41 #endif /* not emacs */ | |
42 | |
43 /* BUFSIZE is the initial size allocated for the buffer | |
44 for reading the termcap file. | |
45 It is not a limit. | |
46 Make it large normally for speed. | |
47 Make it variable when debugging, so can exercise | |
48 increasing the space dynamically. */ | |
49 | |
50 #ifndef BUFSIZE | |
51 #ifdef DEBUG | |
52 #define BUFSIZE bufsize | |
53 | |
54 int bufsize = 128; | |
55 #else | |
56 #define BUFSIZE 2048 | |
57 #endif | |
58 #endif | |
59 | |
60 #ifndef emacs | |
61 static void | |
62 memory_out () | |
63 { | |
771 | 64 retry_write (2, "virtual memory exhausted\n", 25); |
428 | 65 exit (1); |
66 } | |
67 | |
68 static char * | |
69 xmalloc (size) | |
70 unsigned int size; | |
71 { | |
72 char *tem = malloc (size); | |
73 | |
74 if (!tem) | |
75 memory_out (); | |
76 return tem; | |
77 } | |
78 | |
79 static char * | |
80 xrealloc (ptr, size) | |
81 char *ptr; | |
82 unsigned size; | |
83 { | |
84 char *tem = realloc (ptr, size); | |
85 | |
86 if (!tem) | |
87 memory_out (); | |
88 return tem; | |
89 } | |
90 #endif /* not emacs */ | |
91 | |
92 /* Looking up capabilities in the entry already found. */ | |
93 | |
94 /* The pointer to the data made by tgetent is left here | |
95 for tgetnum, tgetflag and tgetstr to find. */ | |
96 static char *term_entry; | |
97 | |
442 | 98 static const char *tgetst1 (const char *ptr, char **area); |
428 | 99 |
100 /* Search entry BP for capability CAP. | |
101 Return a pointer to the capability (in BP) if found, | |
102 0 if not found. */ | |
103 | |
442 | 104 static const char * |
428 | 105 find_capability (bp, cap) |
442 | 106 const char *bp; |
107 const char *cap; | |
428 | 108 { |
109 for (; *bp; bp++) | |
110 if (bp[0] == ':' | |
111 && bp[1] == cap[0] | |
112 && bp[2] == cap[1]) | |
113 return &bp[4]; | |
114 return 0; | |
115 } | |
116 | |
117 int | |
118 tgetnum (cap) | |
442 | 119 const char *cap; |
428 | 120 { |
442 | 121 const char *ptr = find_capability (term_entry, cap); |
428 | 122 if (!ptr || ptr[-1] != '#') |
123 return -1; | |
124 return atoi (ptr); | |
125 } | |
126 | |
127 int | |
128 tgetflag (cap) | |
442 | 129 const char *cap; |
428 | 130 { |
442 | 131 const char *ptr = find_capability (term_entry, cap); |
428 | 132 return 0 != ptr && ptr[-1] == ':'; |
133 } | |
134 | |
135 /* Look up a string-valued capability CAP. | |
136 If AREA is nonzero, it points to a pointer to a block in which | |
137 to store the string. That pointer is advanced over the space used. | |
138 If AREA is zero, space is allocated with `malloc'. */ | |
139 | |
442 | 140 const char * |
428 | 141 tgetstr (cap, area) |
442 | 142 const char *cap; |
428 | 143 char **area; |
144 { | |
442 | 145 const char *ptr = find_capability (term_entry, cap); |
428 | 146 if (!ptr || (ptr[-1] != '=' && ptr[-1] != '~')) |
147 return 0; | |
148 return tgetst1 (ptr, area); | |
149 } | |
150 | |
151 /* Table, indexed by a character in range 0100 to 0140 with 0100 subtracted, | |
152 gives meaning of character following \, or a space if no special meaning. | |
153 Eight characters per line within the string. */ | |
154 | |
155 static char esctab[] | |
156 = " \007\010 \033\014 " | |
157 " \012 " | |
158 " \015 \011 \013 " | |
159 " "; | |
160 | |
161 /* PTR points to a string value inside a termcap entry. | |
162 Copy that value, processing \ and ^ abbreviations, | |
163 into the block that *AREA points to, | |
164 or to newly allocated storage if AREA is 0. */ | |
165 | |
442 | 166 static const char * |
428 | 167 tgetst1 (ptr, area) |
442 | 168 const char *ptr; |
428 | 169 char **area; |
170 { | |
442 | 171 const char *p; |
428 | 172 char *r; |
173 int c; | |
174 int size; | |
175 char *ret; | |
176 int c1; | |
177 | |
178 if (!ptr) | |
179 return 0; | |
180 | |
181 /* `ret' gets address of where to store the string. */ | |
182 if (!area) | |
183 { | |
184 /* Compute size of block needed (may overestimate). */ | |
185 p = ptr; | |
186 while ((c = *p++) && c != ':' && c != '\n') | |
187 ; | |
188 ret = (char *) xmalloc (p - ptr + 1); | |
189 } | |
190 else | |
191 ret = *area; | |
192 | |
193 /* Copy the string value, stopping at null or colon. | |
194 Also process ^ and \ abbreviations. */ | |
195 p = ptr; | |
196 r = ret; | |
197 while ((c = *p++) && c != ':' && c != '\n') | |
198 { | |
199 if (c == '^') | |
200 c = *p++ & 037; | |
201 else if (c == '\\') | |
202 { | |
203 c = *p++; | |
204 if (c >= '0' && c <= '7') | |
205 { | |
206 c -= '0'; | |
207 size = 0; | |
208 | |
209 while (++size < 3 && (c1 = *p) >= '0' && c1 <= '7') | |
210 { | |
211 c *= 8; | |
212 c += c1 - '0'; | |
213 p++; | |
214 } | |
215 } | |
216 else if (c >= 0100 && c < 0200) | |
217 { | |
218 c1 = esctab[(c & ~040) - 0100]; | |
219 if (c1 != ' ') | |
220 c = c1; | |
221 } | |
222 } | |
223 *r++ = c; | |
224 } | |
225 *r = 0; | |
226 /* Update *AREA. */ | |
227 if (area) | |
228 *area = r + 1; | |
229 return ret; | |
230 } | |
231 | |
232 /* Outputting a string with padding. */ | |
233 | |
234 #ifdef LINUX | |
235 speed_t ospeed; | |
236 #else | |
237 short ospeed; | |
238 #endif | |
239 /* If `ospeed' is 0, we use `tputs_baud_rate' as the actual baud rate. */ | |
240 int tputs_baud_rate; | |
241 char PC; | |
242 | |
243 /* Actual baud rate if positive; | |
244 - baud rate / 100 if negative. */ | |
245 | |
246 static short speeds[] = | |
247 { | |
248 0, 50, 75, 110, 135, 150, -2, -3, -6, -12, | |
249 -18, -24, -48, -96, -192, -288, -384, -576, -1152 | |
250 }; | |
251 | |
252 void | |
253 tputs (string, nlines, outfun) | |
442 | 254 const char *string; |
428 | 255 int nlines; |
256 void (*outfun) (int); | |
257 { | |
258 int padcount = 0; | |
259 int speed; | |
260 | |
261 #ifdef emacs | |
262 speed = DEVICE_BAUD_RATE (XDEVICE (Fselected_device (Qnil))); | |
263 #else | |
264 if (ospeed == 0) | |
265 speed = tputs_baud_rate; | |
266 else | |
267 speed = speeds[ospeed]; | |
268 #endif | |
269 | |
270 if (string == (char *) 0) | |
271 return; | |
272 | |
442 | 273 while (isdigit (* (const unsigned char *) string)) |
428 | 274 { |
275 padcount += *string++ - '0'; | |
276 padcount *= 10; | |
277 } | |
278 if (*string == '.') | |
279 { | |
280 string++; | |
281 padcount += *string++ - '0'; | |
282 } | |
283 if (*string == '*') | |
284 { | |
285 string++; | |
286 padcount *= nlines; | |
287 } | |
288 while (*string) | |
289 (*outfun) (*string++); | |
290 | |
291 /* padcount is now in units of tenths of msec. */ | |
292 padcount *= speeds[ospeed]; | |
293 padcount += 500; | |
294 padcount /= 1000; | |
295 if (speeds[ospeed] < 0) | |
296 padcount = -padcount; | |
297 else | |
298 { | |
299 padcount += 50; | |
300 padcount /= 100; | |
301 } | |
302 | |
303 while (padcount-- > 0) | |
304 (*outfun) (PC); | |
305 } | |
306 | |
307 /* Finding the termcap entry in the termcap data base. */ | |
308 | |
309 struct buffer | |
310 { | |
311 char *beg; | |
312 int size; | |
313 char *ptr; | |
314 int ateof; | |
315 int full; | |
316 }; | |
317 | |
318 /* Forward declarations of static functions. */ | |
319 | |
320 static int scan_file (); | |
321 static char *gobble_line (); | |
322 static int compare_contin (); | |
323 static int name_match (); | |
324 | |
325 | |
326 /* Find the termcap entry data for terminal type NAME | |
327 and store it in the block that BP points to. | |
328 Record its address for future use. | |
329 | |
330 If BP is zero, space is dynamically allocated. */ | |
331 | |
332 int | |
333 tgetent (bp, name) | |
334 char *bp; | |
442 | 335 const char *name; |
428 | 336 { |
337 char *tem; | |
338 int fd; | |
339 struct buffer buf; | |
340 char *bp1; | |
341 char *bp2; | |
442 | 342 const char *term; |
428 | 343 int malloc_size = 0; |
344 int c; | |
442 | 345 char *tcenv; /* TERMCAP value, if it contains :tc=. */ |
346 const char *indirect = 0; /* Terminal type in :tc= in TERMCAP value. */ | |
428 | 347 |
771 | 348 tem = egetenv ("TERMCAP"); |
428 | 349 if (tem && *tem == 0) tem = 0; |
350 | |
351 | |
352 /* If tem is non-null and starts with / (in the un*x case, that is), | |
353 it is a file name to use instead of /etc/termcap. | |
354 If it is non-null and does not start with /, | |
355 it is the entry itself, but only if | |
356 the name the caller requested matches the TERM variable. */ | |
357 | |
771 | 358 if (tem && !IS_DIRECTORY_SEP (*tem) && !strcmp (name, egetenv ("TERM"))) |
428 | 359 { |
360 indirect = tgetst1 (find_capability (tem, "tc"), 0); | |
361 if (!indirect) | |
362 { | |
363 if (!bp) | |
364 bp = tem; | |
365 else | |
366 strcpy (bp, tem); | |
367 goto ret; | |
368 } | |
369 else | |
370 { /* We will need to read /etc/termcap. */ | |
371 tcenv = tem; | |
372 tem = 0; | |
373 } | |
374 } | |
375 else | |
376 indirect = (char *) 0; | |
377 | |
378 if (!tem) | |
379 tem = "/etc/termcap"; | |
380 | |
381 /* Here we know we must search a file and tem has its name. */ | |
382 | |
867 | 383 fd = qxe_open ((Ibyte *) tem, 0, 0); |
428 | 384 if (fd < 0) |
385 return -1; | |
386 | |
387 buf.size = BUFSIZE; | |
388 /* Add 1 to size to ensure room for terminating null. */ | |
389 buf.beg = (char *) xmalloc (buf.size + 1); | |
390 term = indirect ? indirect : name; | |
391 | |
392 if (!bp) | |
393 { | |
394 malloc_size = indirect ? strlen (tcenv) + 1 : buf.size; | |
395 bp = (char *) xmalloc (malloc_size); | |
396 } | |
397 bp1 = bp; | |
398 | |
399 if (indirect) | |
400 /* Copy the data from the environment variable. */ | |
401 { | |
402 strcpy (bp, tcenv); | |
403 bp1 += strlen (tcenv); | |
404 } | |
405 | |
406 while (term) | |
407 { | |
408 /* Scan the file, reading it via buf, till find start of main entry. */ | |
409 if (scan_file (term, fd, &buf) == 0) | |
410 return 0; | |
411 | |
412 /* Free old `term' if appropriate. */ | |
413 if (term != name) | |
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
1726
diff
changeset
|
414 xfree (term); |
428 | 415 |
416 /* If BP is malloc'd by us, make sure it is big enough. */ | |
417 if (malloc_size) | |
418 { | |
419 malloc_size = bp1 - bp + buf.size; | |
420 tem = (char *) xrealloc (bp, malloc_size); | |
421 bp1 += tem - bp; | |
422 bp = tem; | |
423 } | |
424 | |
425 bp2 = bp1; | |
426 | |
427 /* Copy the line of the entry from buf into bp. */ | |
428 tem = buf.ptr; | |
429 while ((*bp1++ = c = *tem++) && c != '\n') | |
430 /* Drop out any \ newline sequence. */ | |
431 if (c == '\\' && *tem == '\n') | |
432 { | |
433 bp1--; | |
434 tem++; | |
435 } | |
436 *bp1 = 0; | |
437 | |
438 /* Does this entry refer to another terminal type's entry? | |
439 If something is found, copy it into heap and null-terminate it. */ | |
440 term = tgetst1 (find_capability (bp2, "tc"), 0); | |
441 } | |
442 | |
771 | 443 retry_close (fd); |
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
1726
diff
changeset
|
444 xfree (buf.beg); |
428 | 445 |
446 if (malloc_size) | |
447 { | |
448 bp = (char *) xrealloc (bp, bp1 - bp + 1); | |
449 } | |
450 | |
451 ret: | |
452 term_entry = bp; | |
453 if (malloc_size) | |
454 /* #### yuck, why the hell are we casting a pointer to an int? */ | |
455 return (int) (long) bp; | |
456 return 1; | |
457 } | |
458 | |
459 /* Given file open on FD and buffer BUFP, | |
460 scan the file from the beginning until a line is found | |
461 that starts the entry for terminal type STRING. | |
462 Returns 1 if successful, with that line in BUFP, | |
463 or returns 0 if no entry found in the file. */ | |
464 | |
465 static int | |
466 scan_file (string, fd, bufp) | |
467 char *string; | |
468 int fd; | |
469 struct buffer *bufp; | |
470 { | |
471 char *end; | |
472 | |
473 bufp->ptr = bufp->beg; | |
474 bufp->full = 0; | |
475 bufp->ateof = 0; | |
476 *bufp->ptr = 0; | |
477 | |
478 lseek (fd, 0L, 0); | |
479 | |
480 while (!bufp->ateof) | |
481 { | |
482 /* Read a line into the buffer. */ | |
483 end = 0; | |
484 do | |
485 { | |
486 /* if it is continued, append another line to it, | |
487 until a non-continued line ends. */ | |
488 end = gobble_line (fd, bufp, end); | |
489 } | |
490 while (!bufp->ateof && end[-2] == '\\'); | |
491 | |
492 if (*bufp->ptr != '#' | |
493 && name_match (bufp->ptr, string)) | |
494 return 1; | |
495 | |
496 /* Discard the line just processed. */ | |
497 bufp->ptr = end; | |
498 } | |
499 return 0; | |
500 } | |
501 | |
502 /* Return nonzero if NAME is one of the names specified | |
503 by termcap entry LINE. */ | |
504 | |
505 static int | |
506 name_match (line, name) | |
507 char *line, *name; | |
508 { | |
509 char *tem; | |
510 | |
511 if (!compare_contin (line, name)) | |
512 return 1; | |
513 /* This line starts an entry. Is it the right one? */ | |
514 for (tem = line; *tem && *tem != '\n' && *tem != ':'; tem++) | |
515 if (*tem == '|' && !compare_contin (tem + 1, name)) | |
516 return 1; | |
517 | |
518 return 0; | |
519 } | |
520 | |
521 static int | |
522 compare_contin (str1, str2) | |
523 char *str1, *str2; | |
524 { | |
525 int c1, c2; | |
526 while (1) | |
527 { | |
528 c1 = *str1++; | |
529 c2 = *str2++; | |
530 while (c1 == '\\' && *str1 == '\n') | |
531 { | |
532 str1++; | |
533 while ((c1 = *str1++) == ' ' || c1 == '\t'); | |
534 } | |
535 if (c2 == '\0') | |
536 { | |
537 /* End of type being looked up. */ | |
538 if (c1 == '|' || c1 == ':') | |
539 /* If end of name in data base, we win. */ | |
540 return 0; | |
541 else | |
542 return 1; | |
543 } | |
544 else if (c1 != c2) | |
545 return 1; | |
546 } | |
547 } | |
548 | |
549 /* Make sure that the buffer <- BUFP contains a full line | |
550 of the file open on FD, starting at the place BUFP->ptr | |
551 points to. Can read more of the file, discard stuff before | |
552 BUFP->ptr, or make the buffer bigger. | |
553 | |
554 Returns the pointer to after the newline ending the line, | |
555 or to the end of the file, if there is no newline to end it. | |
556 | |
557 Can also merge on continuation lines. If APPEND_END is | |
558 nonzero, it points past the newline of a line that is | |
559 continued; we add another line onto it and regard the whole | |
560 thing as one line. The caller decides when a line is continued. */ | |
561 | |
562 static char * | |
563 gobble_line (fd, bufp, append_end) | |
564 int fd; | |
565 struct buffer *bufp; | |
566 char *append_end; | |
567 { | |
568 char *end; | |
569 int nread; | |
570 char *buf = bufp->beg; | |
571 char *tem; | |
572 | |
573 if (append_end == 0) | |
574 append_end = bufp->ptr; | |
575 | |
576 while (1) | |
577 { | |
578 end = append_end; | |
579 while (*end && *end != '\n') end++; | |
580 if (*end) | |
581 break; | |
582 if (bufp->ateof) | |
583 return buf + bufp->full; | |
584 if (bufp->ptr == buf) | |
585 { | |
586 if (bufp->full == bufp->size) | |
587 { | |
588 bufp->size *= 2; | |
589 /* Add 1 to size to ensure room for terminating null. */ | |
590 tem = (char *) xrealloc (buf, bufp->size + 1); | |
591 bufp->ptr = (bufp->ptr - buf) + tem; | |
592 append_end = (append_end - buf) + tem; | |
593 bufp->beg = buf = tem; | |
594 } | |
595 } | |
596 else | |
597 { | |
598 append_end -= bufp->ptr - buf; | |
599 memcpy (buf, bufp->ptr, bufp->full -= bufp->ptr - buf); | |
600 bufp->ptr = buf; | |
601 } | |
771 | 602 if (!(nread = retry_read (fd, buf + bufp->full, bufp->size - bufp->full))) |
428 | 603 bufp->ateof = 1; |
604 bufp->full += nread; | |
605 buf[bufp->full] = 0; | |
606 } | |
607 return end + 1; | |
608 } | |
609 | |
610 #ifdef TEST | |
611 | |
612 #include <stdio.h> | |
613 | |
614 main (argc, argv) | |
615 int argc; | |
616 char **argv; | |
617 { | |
618 char *term; | |
619 char *buf; | |
620 | |
621 term = argv[1]; | |
622 printf ("TERM: %s\n", term); | |
623 | |
624 buf = (char *) tgetent (0, term); | |
625 if ((int) buf <= 0) | |
626 { | |
627 printf ("No entry.\n"); | |
628 return 0; | |
629 } | |
630 | |
631 printf ("Entry: %s\n", buf); | |
632 | |
633 tprint ("cm"); | |
634 tprint ("AL"); | |
635 | |
636 printf ("co: %d\n", tgetnum ("co")); | |
637 printf ("am: %d\n", tgetflag ("am")); | |
638 } | |
639 | |
640 tprint (cap) | |
442 | 641 const char *cap; |
428 | 642 { |
643 char *x = tgetstr (cap, 0); | |
644 char *y; | |
645 | |
646 printf ("%s: ", cap); | |
647 if (x) | |
648 { | |
649 for (y = x; *y; y++) | |
650 if (*y <= ' ' || *y == 0177) | |
651 printf ("\\%0o", *y); | |
652 else | |
653 putchar (*y); | |
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
1726
diff
changeset
|
654 xfree (x); |
428 | 655 } |
656 else | |
657 printf ("none"); | |
658 putchar ('\n'); | |
659 } | |
660 | |
661 #endif /* TEST */ | |
662 |