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terminal.c
1 /* $NetBSD: terminal.c,v 1.10 2011/10/04 15:27:04 christos Exp $ */
2 
3 /*-
4  * Copyright (c) 1992, 1993
5  * The Regents of the University of California. All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Christos Zoulas of Cornell University.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in the
17  * documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  * may be used to endorse or promote products derived from this software
20  * without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #include "config.h"
36 #if !defined(lint) && !defined(SCCSID)
37 #if 0
38 static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95";
39 #else
40 #endif
41 #endif /* not lint && not SCCSID */
42 
43 /*
44  * terminal.c: Editor/termcap-curses interface
45  * We have to declare a static variable here, since the
46  * termcap putchar routine does not take an argument!
47  */
48 #include <stdio.h>
49 #include <signal.h>
50 #include <string.h>
51 #include <stdlib.h>
52 #include <unistd.h>
53 #include <limits.h>
54 #if 0 /* TODO: do we need this */
55 #ifdef HAVE_TERMCAP_H
56 #include <termcap.h>
57 #endif
58 #endif
59 #ifdef HAVE_CURSES_H
60 #include <curses.h>
61 #elif HAVE_NCURSES_H
62 #include <ncurses.h>
63 #endif
64 
65 /* Solaris's term.h does horrid things. */
66 #if defined(HAVE_TERM_H) && !defined(__sun)
67 #include <term.h>
68 #endif
69 
70 #include <sys/types.h>
71 #include <sys/ioctl.h>
72 
73 #ifdef _REENTRANT
74 #include <pthread.h>
75 #endif
76 
77 #include "el.h"
78 
79 /*
80  * IMPORTANT NOTE: these routines are allowed to look at the current screen
81  * and the current position assuming that it is correct. If this is not
82  * true, then the update will be WRONG! This is (should be) a valid
83  * assumption...
84  */
85 
86 #define TC_BUFSIZE ((size_t)2048)
87 
88 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \
89  el->el_terminal.t_str[a][0] != '\0')
90 #define Str(a) el->el_terminal.t_str[a]
91 #define Val(a) el->el_terminal.t_val[a]
92 
93 private const struct termcapstr {
94  const char *name;
95  const char *long_name;
96 } tstr[] = {
97 #define T_al 0
98  { "al", "add new blank line" },
99 #define T_bl 1
100  { "bl", "audible bell" },
101 #define T_cd 2
102  { "cd", "clear to bottom" },
103 #define T_ce 3
104  { "ce", "clear to end of line" },
105 #define T_ch 4
106  { "ch", "cursor to horiz pos" },
107 #define T_cl 5
108  { "cl", "clear screen" },
109 #define T_dc 6
110  { "dc", "delete a character" },
111 #define T_dl 7
112  { "dl", "delete a line" },
113 #define T_dm 8
114  { "dm", "start delete mode" },
115 #define T_ed 9
116  { "ed", "end delete mode" },
117 #define T_ei 10
118  { "ei", "end insert mode" },
119 #define T_fs 11
120  { "fs", "cursor from status line" },
121 #define T_ho 12
122  { "ho", "home cursor" },
123 #define T_ic 13
124  { "ic", "insert character" },
125 #define T_im 14
126  { "im", "start insert mode" },
127 #define T_ip 15
128  { "ip", "insert padding" },
129 #define T_kd 16
130  { "kd", "sends cursor down" },
131 #define T_kl 17
132  { "kl", "sends cursor left" },
133 #define T_kr 18
134  { "kr", "sends cursor right" },
135 #define T_ku 19
136  { "ku", "sends cursor up" },
137 #define T_md 20
138  { "md", "begin bold" },
139 #define T_me 21
140  { "me", "end attributes" },
141 #define T_nd 22
142  { "nd", "non destructive space" },
143 #define T_se 23
144  { "se", "end standout" },
145 #define T_so 24
146  { "so", "begin standout" },
147 #define T_ts 25
148  { "ts", "cursor to status line" },
149 #define T_up 26
150  { "up", "cursor up one" },
151 #define T_us 27
152  { "us", "begin underline" },
153 #define T_ue 28
154  { "ue", "end underline" },
155 #define T_vb 29
156  { "vb", "visible bell" },
157 #define T_DC 30
158  { "DC", "delete multiple chars" },
159 #define T_DO 31
160  { "DO", "cursor down multiple" },
161 #define T_IC 32
162  { "IC", "insert multiple chars" },
163 #define T_LE 33
164  { "LE", "cursor left multiple" },
165 #define T_RI 34
166  { "RI", "cursor right multiple" },
167 #define T_UP 35
168  { "UP", "cursor up multiple" },
169 #define T_kh 36
170  { "kh", "send cursor home" },
171 #define T_at7 37
172  { "@7", "send cursor end" },
173 #define T_str 38
174  { NULL, NULL }
175 };
176 
177 private const struct termcapval {
178  const char *name;
179  const char *long_name;
180 } tval[] = {
181 #define T_am 0
182  { "am", "has automatic margins" },
183 #define T_pt 1
184  { "pt", "has physical tabs" },
185 #define T_li 2
186  { "li", "Number of lines" },
187 #define T_co 3
188  { "co", "Number of columns" },
189 #define T_km 4
190  { "km", "Has meta key" },
191 #define T_xt 5
192  { "xt", "Tab chars destructive" },
193 #define T_xn 6
194  { "xn", "newline ignored at right margin" },
195 #define T_MT 7
196  { "MT", "Has meta key" }, /* XXX? */
197 #define T_val 8
198  { NULL, NULL, }
199 };
200 /* do two or more of the attributes use me */
201 
202 private void terminal_setflags(EditLine *);
203 private int terminal_rebuffer_display(EditLine *);
204 private void terminal_free_display(EditLine *);
205 private int terminal_alloc_display(EditLine *);
206 private void terminal_alloc(EditLine *, const struct termcapstr *,
207  const char *);
208 private void terminal_init_arrow(EditLine *);
209 private void terminal_reset_arrow(EditLine *);
210 private int terminal_putc(int);
211 private void terminal_tputs(EditLine *, const char *, int);
212 
213 #ifdef _REENTRANT
214 private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER;
215 #endif
216 private FILE *terminal_outfile = NULL;
217 
218 
219 /* terminal_setflags():
220  * Set the terminal capability flags
221  */
222 private void
223 terminal_setflags(EditLine *el)
224 {
225  EL_FLAGS = 0;
226  if (el->el_tty.t_tabs)
227  EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
228 
229  EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
230  EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
231  EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
232  EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
233  TERM_CAN_INSERT : 0;
234  EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
235  EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
236  EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
237 
238  if (GoodStr(T_me) && GoodStr(T_ue))
239  EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
240  TERM_CAN_ME : 0;
241  else
242  EL_FLAGS &= ~TERM_CAN_ME;
243  if (GoodStr(T_me) && GoodStr(T_se))
244  EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
245  TERM_CAN_ME : 0;
246 
247 
248 #ifdef DEBUG_SCREEN
249  if (!EL_CAN_UP) {
250  (void) fprintf(el->el_errfile,
251  "WARNING: Your terminal cannot move up.\n");
252  (void) fprintf(el->el_errfile,
253  "Editing may be odd for long lines.\n");
254  }
255  if (!EL_CAN_CEOL)
256  (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
257  if (!EL_CAN_DELETE)
258  (void) fprintf(el->el_errfile, "no delete char capability.\n");
259  if (!EL_CAN_INSERT)
260  (void) fprintf(el->el_errfile, "no insert char capability.\n");
261 #endif /* DEBUG_SCREEN */
262 }
263 
264 /* terminal_init():
265  * Initialize the terminal stuff
266  */
267 protected int
268 terminal_init(EditLine *el)
269 {
270 
271  el->el_terminal.t_buf = el_malloc(TC_BUFSIZE *
272  sizeof(*el->el_terminal.t_buf));
273  if (el->el_terminal.t_buf == NULL)
274  return -1;
275  el->el_terminal.t_cap = el_malloc(TC_BUFSIZE *
276  sizeof(*el->el_terminal.t_cap));
277  if (el->el_terminal.t_cap == NULL)
278  return -1;
279  el->el_terminal.t_fkey = el_malloc(A_K_NKEYS *
280  sizeof(*el->el_terminal.t_fkey));
281  if (el->el_terminal.t_fkey == NULL)
282  return -1;
283  el->el_terminal.t_loc = 0;
284  el->el_terminal.t_str = el_malloc(T_str *
285  sizeof(*el->el_terminal.t_str));
286  if (el->el_terminal.t_str == NULL)
287  return -1;
288  (void) memset(el->el_terminal.t_str, 0, T_str *
289  sizeof(*el->el_terminal.t_str));
290  el->el_terminal.t_val = el_malloc(T_val *
291  sizeof(*el->el_terminal.t_val));
292  if (el->el_terminal.t_val == NULL)
293  return -1;
294  (void) memset(el->el_terminal.t_val, 0, T_val *
295  sizeof(*el->el_terminal.t_val));
296  (void) terminal_set(el, NULL);
297  terminal_init_arrow(el);
298  return 0;
299 }
300 
301 /* terminal_end():
302  * Clean up the terminal stuff
303  */
304 protected void
305 terminal_end(EditLine *el)
306 {
307 
308  el_free(el->el_terminal.t_buf);
309  el->el_terminal.t_buf = NULL;
310  el_free(el->el_terminal.t_cap);
311  el->el_terminal.t_cap = NULL;
312  el->el_terminal.t_loc = 0;
313  el_free(el->el_terminal.t_str);
314  el->el_terminal.t_str = NULL;
315  el_free(el->el_terminal.t_val);
316  el->el_terminal.t_val = NULL;
317  el_free(el->el_terminal.t_fkey);
318  el->el_terminal.t_fkey = NULL;
319  terminal_free_display(el);
320 }
321 
322 
323 /* terminal_alloc():
324  * Maintain a string pool for termcap strings
325  */
326 private void
327 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
328 {
329  char termbuf[TC_BUFSIZE];
330  size_t tlen, clen;
331  char **tlist = el->el_terminal.t_str;
332  char **tmp, **str = &tlist[t - tstr];
333 
334  if (cap == NULL || *cap == '\0') {
335  *str = NULL;
336  return;
337  } else
338  clen = strlen(cap);
339 
340  tlen = *str == NULL ? 0 : strlen(*str);
341 
342  /*
343  * New string is shorter; no need to allocate space
344  */
345  if (clen <= tlen) {
346  if (*str)
347  (void) strcpy(*str, cap); /* XXX strcpy is safe */
348  return;
349  }
350  /*
351  * New string is longer; see if we have enough space to append
352  */
353  if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) {
354  /* XXX strcpy is safe */
355  (void) strcpy(*str = &el->el_terminal.t_buf[
356  el->el_terminal.t_loc], cap);
357  el->el_terminal.t_loc += clen + 1; /* one for \0 */
358  return;
359  }
360  /*
361  * Compact our buffer; no need to check compaction, cause we know it
362  * fits...
363  */
364  tlen = 0;
365  for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
366  if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
367  char *ptr;
368 
369  for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
370  continue;
371  termbuf[tlen++] = '\0';
372  }
373  memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE);
374  el->el_terminal.t_loc = tlen;
375  if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) {
376  (void) fprintf(el->el_errfile,
377  "Out of termcap string space.\n");
378  return;
379  }
380  /* XXX strcpy is safe */
381  (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc],
382  cap);
383  el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */
384  return;
385 }
386 
387 
388 /* terminal_rebuffer_display():
389  * Rebuffer the display after the screen changed size
390  */
391 private int
392 terminal_rebuffer_display(EditLine *el)
393 {
394  coord_t *c = &el->el_terminal.t_size;
395 
396  terminal_free_display(el);
397 
398  c->h = Val(T_co);
399  c->v = Val(T_li);
400 
401  if (terminal_alloc_display(el) == -1)
402  return -1;
403  return 0;
404 }
405 
406 
407 /* terminal_alloc_display():
408  * Allocate a new display.
409  */
410 private int
411 terminal_alloc_display(EditLine *el)
412 {
413  int i;
414  Char **b;
415  coord_t *c = &el->el_terminal.t_size;
416 
417  b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
418  if (b == NULL)
419  return -1;
420  for (i = 0; i < c->v; i++) {
421  b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
422  if (b[i] == NULL) {
423  while (--i >= 0)
424  el_free(b[i]);
425  el_free(b);
426  return -1;
427  }
428  }
429  b[c->v] = NULL;
430  el->el_display = b;
431 
432  b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
433  if (b == NULL)
434  return -1;
435  for (i = 0; i < c->v; i++) {
436  b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
437  if (b[i] == NULL) {
438  while (--i >= 0)
439  el_free(b[i]);
440  el_free(b);
441  return -1;
442  }
443  }
444  b[c->v] = NULL;
445  el->el_vdisplay = b;
446  return 0;
447 }
448 
449 
450 /* terminal_free_display():
451  * Free the display buffers
452  */
453 private void
454 terminal_free_display(EditLine *el)
455 {
456  Char **b;
457  Char **bufp;
458 
459  b = el->el_display;
460  el->el_display = NULL;
461  if (b != NULL) {
462  for (bufp = b; *bufp != NULL; bufp++)
463  el_free(*bufp);
464  el_free(b);
465  }
466  b = el->el_vdisplay;
467  el->el_vdisplay = NULL;
468  if (b != NULL) {
469  for (bufp = b; *bufp != NULL; bufp++)
470  el_free(*bufp);
471  el_free(b);
472  }
473 }
474 
475 
476 /* terminal_move_to_line():
477  * move to line <where> (first line == 0)
478  * as efficiently as possible
479  */
480 protected void
481 terminal_move_to_line(EditLine *el, int where)
482 {
483  int del;
484 
485  if (where == el->el_cursor.v)
486  return;
487 
488  if (where > el->el_terminal.t_size.v) {
489 #ifdef DEBUG_SCREEN
490  (void) fprintf(el->el_errfile,
491  "terminal_move_to_line: where is ridiculous: %d\r\n",
492  where);
493 #endif /* DEBUG_SCREEN */
494  return;
495  }
496  if ((del = where - el->el_cursor.v) > 0) {
497  while (del > 0) {
498  if (EL_HAS_AUTO_MARGINS &&
499  el->el_display[el->el_cursor.v][0] != '\0') {
500  size_t h = (size_t)
501  (el->el_terminal.t_size.h - 1);
502 #ifdef WIDECHAR
503  for (; h > 0 &&
504  el->el_display[el->el_cursor.v][h] ==
505  MB_FILL_CHAR;
506  h--)
507  continue;
508 #endif
509  /* move without newline */
510  terminal_move_to_char(el, (int)h);
511  terminal_overwrite(el, &el->el_display
512  [el->el_cursor.v][el->el_cursor.h],
513  (size_t)(el->el_terminal.t_size.h -
514  el->el_cursor.h));
515  /* updates Cursor */
516  del--;
517  } else {
518  if ((del > 1) && GoodStr(T_DO)) {
519  terminal_tputs(el, tgoto(Str(T_DO), del,
520  del), del);
521  del = 0;
522  } else {
523  for (; del > 0; del--)
524  terminal__putc(el, '\n');
525  /* because the \n will become \r\n */
526  el->el_cursor.h = 0;
527  }
528  }
529  }
530  } else { /* del < 0 */
531  if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
532  terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
533  else {
534  if (GoodStr(T_up))
535  for (; del < 0; del++)
536  terminal_tputs(el, Str(T_up), 1);
537  }
538  }
539  el->el_cursor.v = where;/* now where is here */
540 }
541 
542 
543 /* terminal_move_to_char():
544  * Move to the character position specified
545  */
546 protected void
547 terminal_move_to_char(EditLine *el, int where)
548 {
549  int del, i;
550 
551 mc_again:
552  if (where == el->el_cursor.h)
553  return;
554 
555  if (where > el->el_terminal.t_size.h) {
556 #ifdef DEBUG_SCREEN
557  (void) fprintf(el->el_errfile,
558  "terminal_move_to_char: where is riduculous: %d\r\n",
559  where);
560 #endif /* DEBUG_SCREEN */
561  return;
562  }
563  if (!where) { /* if where is first column */
564  terminal__putc(el, '\r'); /* do a CR */
565  el->el_cursor.h = 0;
566  return;
567  }
568  del = where - el->el_cursor.h;
569 
570  if ((del < -4 || del > 4) && GoodStr(T_ch))
571  /* go there directly */
572  terminal_tputs(el, tgoto(Str(T_ch), where, where), where);
573  else {
574  if (del > 0) { /* moving forward */
575  if ((del > 4) && GoodStr(T_RI))
576  terminal_tputs(el, tgoto(Str(T_RI), del, del),
577  del);
578  else {
579  /* if I can do tabs, use them */
580  if (EL_CAN_TAB) {
581  if ((el->el_cursor.h & 0370) !=
582  (where & ~0x7)
583 #ifdef WIDECHAR
584  && (el->el_display[
585  el->el_cursor.v][where & 0370] !=
586  MB_FILL_CHAR)
587 #endif
588  ) {
589  /* if not within tab stop */
590  for (i =
591  (el->el_cursor.h & 0370);
592  i < (where & ~0x7);
593  i += 8)
594  terminal__putc(el,
595  '\t');
596  /* then tab over */
597  el->el_cursor.h = where & ~0x7;
598  }
599  }
600  /*
601  * it's usually cheaper to just write the
602  * chars, so we do.
603  */
604  /*
605  * NOTE THAT terminal_overwrite() WILL CHANGE
606  * el->el_cursor.h!!!
607  */
608  terminal_overwrite(el, &el->el_display[
609  el->el_cursor.v][el->el_cursor.h],
610  (size_t)(where - el->el_cursor.h));
611 
612  }
613  } else { /* del < 0 := moving backward */
614  if ((-del > 4) && GoodStr(T_LE))
615  terminal_tputs(el, tgoto(Str(T_LE), -del, -del),
616  -del);
617  else { /* can't go directly there */
618  /*
619  * if the "cost" is greater than the "cost"
620  * from col 0
621  */
622  if (EL_CAN_TAB ?
623  ((unsigned int)-del >
624  (((unsigned int) where >> 3) +
625  (where & 07)))
626  : (-del > where)) {
627  terminal__putc(el, '\r');/* do a CR */
628  el->el_cursor.h = 0;
629  goto mc_again; /* and try again */
630  }
631  for (i = 0; i < -del; i++)
632  terminal__putc(el, '\b');
633  }
634  }
635  }
636  el->el_cursor.h = where; /* now where is here */
637 }
638 
639 
640 /* terminal_overwrite():
641  * Overstrike num characters
642  * Assumes MB_FILL_CHARs are present to keep the column count correct
643  */
644 protected void
645 terminal_overwrite(EditLine *el, const Char *cp, size_t n)
646 {
647 #ifdef WIDECHAR
648  int width;
649 #endif
650 
651  if (n == 0)
652  return;
653 
654  if (n > (size_t)el->el_terminal.t_size.h) {
655 #ifdef DEBUG_SCREEN
656  (void) fprintf(el->el_errfile,
657  "terminal_overwrite: n is riduculous: %d\r\n", n);
658 #endif /* DEBUG_SCREEN */
659  return;
660  }
661 
662  do {
663 #ifdef WIDECHAR
664  width = wcwidth(*cp); /* Returns -1 for faux character. */
665  if (width != -1)
666  el->el_cursor.h += width;
667 #else
668  el->el_cursor.h++;
669 #endif
670  /* terminal__putc() ignores any MB_FILL_CHARs */
671  terminal__putc(el, *cp++);
672  } while (--n);
673 
674  if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */
675  if (EL_HAS_AUTO_MARGINS) { /* yes */
676  el->el_cursor.h = 0;
677  el->el_cursor.v++;
678  if (EL_HAS_MAGIC_MARGINS) {
679  /* force the wrap to avoid the "magic"
680  * situation */
681  Char c;
682  if ((c = el->el_display[el->el_cursor.v]
683  [el->el_cursor.h]) != '\0') {
684  terminal_overwrite(el, &c, (size_t)1);
685 #ifdef WIDECHAR
686  while (el->el_display[el->el_cursor.v]
687  [el->el_cursor.h] == MB_FILL_CHAR)
688  el->el_cursor.h++;
689 #endif
690  } else {
691  terminal__putc(el, ' ');
692  el->el_cursor.h = 1;
693  }
694  }
695  } else /* no wrap, but cursor stays on screen */
696  el->el_cursor.h = el->el_terminal.t_size.h - 1;
697  }
698 }
699 
700 
701 /* terminal_deletechars():
702  * Delete num characters
703  */
704 protected void
705 terminal_deletechars(EditLine *el, int num)
706 {
707  if (num <= 0)
708  return;
709 
710  if (!EL_CAN_DELETE) {
711 #ifdef DEBUG_EDIT
712  (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
713 #endif /* DEBUG_EDIT */
714  return;
715  }
716  if (num > el->el_terminal.t_size.h) {
717 #ifdef DEBUG_SCREEN
718  (void) fprintf(el->el_errfile,
719  "terminal_deletechars: num is riduculous: %d\r\n", num);
720 #endif /* DEBUG_SCREEN */
721  return;
722  }
723  if (GoodStr(T_DC)) /* if I have multiple delete */
724  if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
725  * expen. */
726  terminal_tputs(el, tgoto(Str(T_DC), num, num), num);
727  return;
728  }
729  if (GoodStr(T_dm)) /* if I have delete mode */
730  terminal_tputs(el, Str(T_dm), 1);
731 
732  if (GoodStr(T_dc)) /* else do one at a time */
733  while (num--)
734  terminal_tputs(el, Str(T_dc), 1);
735 
736  if (GoodStr(T_ed)) /* if I have delete mode */
737  terminal_tputs(el, Str(T_ed), 1);
738 }
739 
740 
741 /* terminal_insertwrite():
742  * Puts terminal in insert character mode or inserts num
743  * characters in the line
744  * Assumes MB_FILL_CHARs are present to keep column count correct
745  */
746 protected void
747 terminal_insertwrite(EditLine *el, Char *cp, int num)
748 {
749  if (num <= 0)
750  return;
751  if (!EL_CAN_INSERT) {
752 #ifdef DEBUG_EDIT
753  (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
754 #endif /* DEBUG_EDIT */
755  return;
756  }
757  if (num > el->el_terminal.t_size.h) {
758 #ifdef DEBUG_SCREEN
759  (void) fprintf(el->el_errfile,
760  "StartInsert: num is riduculous: %d\r\n", num);
761 #endif /* DEBUG_SCREEN */
762  return;
763  }
764  if (GoodStr(T_IC)) /* if I have multiple insert */
765  if ((num > 1) || !GoodStr(T_ic)) {
766  /* if ic would be more expensive */
767  terminal_tputs(el, tgoto(Str(T_IC), num, num), num);
768  terminal_overwrite(el, cp, (size_t)num);
769  /* this updates el_cursor.h */
770  return;
771  }
772  if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
773  terminal_tputs(el, Str(T_im), 1);
774 
775  el->el_cursor.h += num;
776  do
777  terminal__putc(el, *cp++);
778  while (--num);
779 
780  if (GoodStr(T_ip)) /* have to make num chars insert */
781  terminal_tputs(el, Str(T_ip), 1);
782 
783  terminal_tputs(el, Str(T_ei), 1);
784  return;
785  }
786  do {
787  if (GoodStr(T_ic)) /* have to make num chars insert */
788  terminal_tputs(el, Str(T_ic), 1);
789 
790  terminal__putc(el, *cp++);
791 
792  el->el_cursor.h++;
793 
794  if (GoodStr(T_ip)) /* have to make num chars insert */
795  terminal_tputs(el, Str(T_ip), 1);
796  /* pad the inserted char */
797 
798  } while (--num);
799 }
800 
801 
802 /* terminal_clear_EOL():
803  * clear to end of line. There are num characters to clear
804  */
805 protected void
806 terminal_clear_EOL(EditLine *el, int num)
807 {
808  int i;
809 
810  if (EL_CAN_CEOL && GoodStr(T_ce))
811  terminal_tputs(el, Str(T_ce), 1);
812  else {
813  for (i = 0; i < num; i++)
814  terminal__putc(el, ' ');
815  el->el_cursor.h += num; /* have written num spaces */
816  }
817 }
818 
819 
820 /* terminal_clear_screen():
821  * Clear the screen
822  */
823 protected void
824 terminal_clear_screen(EditLine *el)
825 { /* clear the whole screen and home */
826 
827  if (GoodStr(T_cl))
828  /* send the clear screen code */
829  terminal_tputs(el, Str(T_cl), Val(T_li));
830  else if (GoodStr(T_ho) && GoodStr(T_cd)) {
831  terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */
832  /* clear to bottom of screen */
833  terminal_tputs(el, Str(T_cd), Val(T_li));
834  } else {
835  terminal__putc(el, '\r');
836  terminal__putc(el, '\n');
837  }
838 }
839 
840 
841 /* terminal_beep():
842  * Beep the way the terminal wants us
843  */
844 protected void
845 terminal_beep(EditLine *el)
846 {
847  if (GoodStr(T_bl))
848  /* what termcap says we should use */
849  terminal_tputs(el, Str(T_bl), 1);
850  else
851  terminal__putc(el, '\007'); /* an ASCII bell; ^G */
852 }
853 
854 
855 protected void
856 terminal_get(EditLine *el, const char **term)
857 {
858  *term = el->el_terminal.t_name;
859 }
860 
861 
862 /* terminal_set():
863  * Read in the terminal capabilities from the requested terminal
864  */
865 protected int
866 terminal_set(EditLine *el, const char *term)
867 {
868  int i;
869  char buf[TC_BUFSIZE];
870  char *area;
871  const struct termcapstr *t;
872  sigset_t oset, nset;
873  int lins, cols;
874 
875  (void) sigemptyset(&nset);
876  (void) sigaddset(&nset, SIGWINCH);
877  (void) sigprocmask(SIG_BLOCK, &nset, &oset);
878 
879  area = buf;
880 
881 
882  if (term == NULL)
883  term = getenv("TERM");
884 
885  if (!term || !term[0])
886  term = "dumb";
887 
888  if (strcmp(term, "emacs") == 0)
889  el->el_flags |= EDIT_DISABLED;
890 
891  memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
892 
893  i = tgetent(el->el_terminal.t_cap, term);
894 
895  if (i <= 0) {
896  if (i == -1)
897  (void) fprintf(el->el_errfile,
898  "Cannot read termcap database;\n");
899  else if (i == 0)
900  (void) fprintf(el->el_errfile,
901  "No entry for terminal type \"%s\";\n", term);
902  (void) fprintf(el->el_errfile,
903  "using dumb terminal settings.\n");
904  Val(T_co) = 80; /* do a dumb terminal */
905  Val(T_pt) = Val(T_km) = Val(T_li) = 0;
906  Val(T_xt) = Val(T_MT);
907  for (t = tstr; t->name != NULL; t++)
908  terminal_alloc(el, t, NULL);
909  } else {
910  /* auto/magic margins */
911  Val(T_am) = tgetflag("am");
912  Val(T_xn) = tgetflag("xn");
913  /* Can we tab */
914  Val(T_pt) = tgetflag("pt");
915  Val(T_xt) = tgetflag("xt");
916  /* do we have a meta? */
917  Val(T_km) = tgetflag("km");
918  Val(T_MT) = tgetflag("MT");
919  /* Get the size */
920  Val(T_co) = tgetnum("co");
921  Val(T_li) = tgetnum("li");
922  for (t = tstr; t->name != NULL; t++) {
923  /* XXX: some systems' tgetstr needs non const */
924  terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
925  &area));
926  }
927  }
928 
929  if (Val(T_co) < 2)
930  Val(T_co) = 80; /* just in case */
931  if (Val(T_li) < 1)
932  Val(T_li) = 24;
933 
934  el->el_terminal.t_size.v = Val(T_co);
935  el->el_terminal.t_size.h = Val(T_li);
936 
937  terminal_setflags(el);
938 
939  /* get the correct window size */
940  (void) terminal_get_size(el, &lins, &cols);
941  if (terminal_change_size(el, lins, cols) == -1)
942  return -1;
943  (void) sigprocmask(SIG_SETMASK, &oset, NULL);
944  terminal_bind_arrow(el);
945  el->el_terminal.t_name = term;
946  return i <= 0 ? -1 : 0;
947 }
948 
949 
950 /* terminal_get_size():
951  * Return the new window size in lines and cols, and
952  * true if the size was changed.
953  */
954 protected int
955 terminal_get_size(EditLine *el, int *lins, int *cols)
956 {
957 
958  *cols = Val(T_co);
959  *lins = Val(T_li);
960 
961 #ifdef TIOCGWINSZ
962  {
963  struct winsize ws;
964  if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) {
965  if (ws.ws_col)
966  *cols = ws.ws_col;
967  if (ws.ws_row)
968  *lins = ws.ws_row;
969  }
970  }
971 #endif
972 #ifdef TIOCGSIZE
973  {
974  struct ttysize ts;
975  if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) {
976  if (ts.ts_cols)
977  *cols = ts.ts_cols;
978  if (ts.ts_lines)
979  *lins = ts.ts_lines;
980  }
981  }
982 #endif
983  return Val(T_co) != *cols || Val(T_li) != *lins;
984 }
985 
986 
987 /* terminal_change_size():
988  * Change the size of the terminal
989  */
990 protected int
991 terminal_change_size(EditLine *el, int lins, int cols)
992 {
993  /*
994  * Just in case
995  */
996  Val(T_co) = (cols < 2) ? 80 : cols;
997  Val(T_li) = (lins < 1) ? 24 : lins;
998 
999  /* re-make display buffers */
1000  if (terminal_rebuffer_display(el) == -1)
1001  return -1;
1002  re_clear_display(el);
1003  return 0;
1004 }
1005 
1006 
1007 /* terminal_init_arrow():
1008  * Initialize the arrow key bindings from termcap
1009  */
1010 private void
1011 terminal_init_arrow(EditLine *el)
1012 {
1013  funckey_t *arrow = el->el_terminal.t_fkey;
1014 
1015  arrow[A_K_DN].name = STR("down");
1016  arrow[A_K_DN].key = T_kd;
1017  arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
1018  arrow[A_K_DN].type = XK_CMD;
1019 
1020  arrow[A_K_UP].name = STR("up");
1021  arrow[A_K_UP].key = T_ku;
1022  arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
1023  arrow[A_K_UP].type = XK_CMD;
1024 
1025  arrow[A_K_LT].name = STR("left");
1026  arrow[A_K_LT].key = T_kl;
1027  arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1028  arrow[A_K_LT].type = XK_CMD;
1029 
1030  arrow[A_K_RT].name = STR("right");
1031  arrow[A_K_RT].key = T_kr;
1032  arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1033  arrow[A_K_RT].type = XK_CMD;
1034 
1035  arrow[A_K_HO].name = STR("home");
1036  arrow[A_K_HO].key = T_kh;
1037  arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1038  arrow[A_K_HO].type = XK_CMD;
1039 
1040  arrow[A_K_EN].name = STR("end");
1041  arrow[A_K_EN].key = T_at7;
1042  arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1043  arrow[A_K_EN].type = XK_CMD;
1044 }
1045 
1046 
1047 /* terminal_reset_arrow():
1048  * Reset arrow key bindings
1049  */
1050 private void
1051 terminal_reset_arrow(EditLine *el)
1052 {
1053  funckey_t *arrow = el->el_terminal.t_fkey;
1054  static const Char strA[] = {033, '[', 'A', '\0'};
1055  static const Char strB[] = {033, '[', 'B', '\0'};
1056  static const Char strC[] = {033, '[', 'C', '\0'};
1057  static const Char strD[] = {033, '[', 'D', '\0'};
1058  static const Char strH[] = {033, '[', 'H', '\0'};
1059  static const Char strF[] = {033, '[', 'F', '\0'};
1060  static const Char stOA[] = {033, 'O', 'A', '\0'};
1061  static const Char stOB[] = {033, 'O', 'B', '\0'};
1062  static const Char stOC[] = {033, 'O', 'C', '\0'};
1063  static const Char stOD[] = {033, 'O', 'D', '\0'};
1064  static const Char stOH[] = {033, 'O', 'H', '\0'};
1065  static const Char stOF[] = {033, 'O', 'F', '\0'};
1066 
1067  keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1068  keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1069  keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1070  keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1071  keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1072  keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1073  keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1074  keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1075  keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1076  keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1077  keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1078  keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1079 
1080  if (el->el_map.type != MAP_VI)
1081  return;
1082  keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1083  keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1084  keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1085  keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1086  keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1087  keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1088  keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1089  keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1090  keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1091  keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1092  keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1093  keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1094 }
1095 
1096 
1097 /* terminal_set_arrow():
1098  * Set an arrow key binding
1099  */
1100 protected int
1101 terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun,
1102  int type)
1103 {
1104  funckey_t *arrow = el->el_terminal.t_fkey;
1105  int i;
1106 
1107  for (i = 0; i < A_K_NKEYS; i++)
1108  if (Strcmp(name, arrow[i].name) == 0) {
1109  arrow[i].fun = *fun;
1110  arrow[i].type = type;
1111  return 0;
1112  }
1113  return -1;
1114 }
1115 
1116 
1117 /* terminal_clear_arrow():
1118  * Clear an arrow key binding
1119  */
1120 protected int
1121 terminal_clear_arrow(EditLine *el, const Char *name)
1122 {
1123  funckey_t *arrow = el->el_terminal.t_fkey;
1124  int i;
1125 
1126  for (i = 0; i < A_K_NKEYS; i++)
1127  if (Strcmp(name, arrow[i].name) == 0) {
1128  arrow[i].type = XK_NOD;
1129  return 0;
1130  }
1131  return -1;
1132 }
1133 
1134 
1135 /* terminal_print_arrow():
1136  * Print the arrow key bindings
1137  */
1138 protected void
1139 terminal_print_arrow(EditLine *el, const Char *name)
1140 {
1141  int i;
1142  funckey_t *arrow = el->el_terminal.t_fkey;
1143 
1144  for (i = 0; i < A_K_NKEYS; i++)
1145  if (*name == '\0' || Strcmp(name, arrow[i].name) == 0)
1146  if (arrow[i].type != XK_NOD)
1147  keymacro_kprint(el, arrow[i].name,
1148  &arrow[i].fun, arrow[i].type);
1149 }
1150 
1151 
1152 /* terminal_bind_arrow():
1153  * Bind the arrow keys
1154  */
1155 protected void
1156 terminal_bind_arrow(EditLine *el)
1157 {
1158  el_action_t *map;
1159  const el_action_t *dmap;
1160  int i, j;
1161  char *p;
1162  funckey_t *arrow = el->el_terminal.t_fkey;
1163 
1164  /* Check if the components needed are initialized */
1165  if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL)
1166  return;
1167 
1168  map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1169  dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1170 
1171  terminal_reset_arrow(el);
1172 
1173  for (i = 0; i < A_K_NKEYS; i++) {
1174  Char wt_str[VISUAL_WIDTH_MAX];
1175  Char *px;
1176  size_t n;
1177 
1178  p = el->el_terminal.t_str[arrow[i].key];
1179  if (!p || !*p)
1180  continue;
1181  for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n)
1182  wt_str[n] = p[n];
1183  while (n < VISUAL_WIDTH_MAX)
1184  wt_str[n++] = '\0';
1185  px = wt_str;
1186  j = (unsigned char) *p;
1187  /*
1188  * Assign the arrow keys only if:
1189  *
1190  * 1. They are multi-character arrow keys and the user
1191  * has not re-assigned the leading character, or
1192  * has re-assigned the leading character to be
1193  * ED_SEQUENCE_LEAD_IN
1194  * 2. They are single arrow keys pointing to an
1195  * unassigned key.
1196  */
1197  if (arrow[i].type == XK_NOD)
1198  keymacro_clear(el, map, px);
1199  else {
1200  if (p[1] && (dmap[j] == map[j] ||
1201  map[j] == ED_SEQUENCE_LEAD_IN)) {
1202  keymacro_add(el, px, &arrow[i].fun,
1203  arrow[i].type);
1204  map[j] = ED_SEQUENCE_LEAD_IN;
1205  } else if (map[j] == ED_UNASSIGNED) {
1206  keymacro_clear(el, map, px);
1207  if (arrow[i].type == XK_CMD)
1208  map[j] = arrow[i].fun.cmd;
1209  else
1210  keymacro_add(el, px, &arrow[i].fun,
1211  arrow[i].type);
1212  }
1213  }
1214  }
1215 }
1216 
1217 /* terminal_putc():
1218  * Add a character
1219  */
1220 private int
1221 terminal_putc(int c)
1222 {
1223  if (terminal_outfile == NULL)
1224  return -1;
1225  return fputc(c, terminal_outfile);
1226 }
1227 
1228 private void
1229 terminal_tputs(EditLine *el, const char *cap, int affcnt)
1230 {
1231 #ifdef _REENTRANT
1232  pthread_mutex_lock(&terminal_mutex);
1233 #endif
1234  terminal_outfile = el->el_outfile;
1235  (void)tputs(cap, affcnt, terminal_putc);
1236 #ifdef _REENTRANT
1237  pthread_mutex_unlock(&terminal_mutex);
1238 #endif
1239 }
1240 
1241 /* terminal__putc():
1242  * Add a character
1243  */
1244 protected int
1245 terminal__putc(EditLine *el, Int c)
1246 {
1247  char buf[MB_LEN_MAX +1];
1248  ssize_t i;
1249  mbstate_t state;
1250 
1251  memset(&state, 0, sizeof(mbstate_t));
1252  if (c == (Int)MB_FILL_CHAR)
1253  return 0;
1254  i = ct_encode_char(buf, (size_t)MB_CUR_MAX, c, &state);
1255  if (i <= 0)
1256  return (int)i;
1257  buf[i] = '\0';
1258  return fputs(buf, el->el_outfile);
1259 }
1260 
1261 /* terminal__flush():
1262  * Flush output
1263  */
1264 protected void
1265 terminal__flush(EditLine *el)
1266 {
1267 
1268  (void) fflush(el->el_outfile);
1269 }
1270 
1271 /* terminal_writec():
1272  * Write the given character out, in a human readable form
1273  */
1274 protected void
1275 terminal_writec(EditLine *el, Int c)
1276 {
1277  Char visbuf[VISUAL_WIDTH_MAX +1];
1278  ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
1279  visbuf[vcnt] = '\0';
1280  terminal_overwrite(el, visbuf, (size_t)vcnt);
1281  terminal__flush(el);
1282 }
1283 
1284 
1285 /* terminal_telltc():
1286  * Print the current termcap characteristics
1287  */
1288 protected int
1289 /*ARGSUSED*/
1290 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)),
1291  const Char **argv __attribute__((__unused__)))
1292 {
1293  const struct termcapstr *t;
1294  char **ts;
1295 
1296  (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1297  (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1298  (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1299  Val(T_co), Val(T_li));
1300  (void) fprintf(el->el_outfile,
1301  "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1302  (void) fprintf(el->el_outfile,
1303  "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1304  (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1305  EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1306  if (EL_HAS_AUTO_MARGINS)
1307  (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1308  EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1309 
1310  for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) {
1311  const char *ub;
1312  if (*ts && **ts) {
1313  ub = ct_encode_string(ct_visual_string(
1314  ct_decode_string(*ts, &el->el_scratch)),
1315  &el->el_scratch);
1316  } else {
1317  ub = "(empty)";
1318  }
1319  (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1320  t->long_name, t->name, ub);
1321  }
1322  (void) fputc('\n', el->el_outfile);
1323  return 0;
1324 }
1325 
1326 
1327 /* terminal_settc():
1328  * Change the current terminal characteristics
1329  */
1330 protected int
1331 /*ARGSUSED*/
1332 terminal_settc(EditLine *el, int argc __attribute__((__unused__)),
1333  const Char **argv)
1334 {
1335  const struct termcapstr *ts;
1336  const struct termcapval *tv;
1337  char what[8], how[8];
1338 
1339  if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1340  return -1;
1341 
1342  strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what));
1343  what[sizeof(what) - 1] = '\0';
1344  strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how));
1345  how[sizeof(how) - 1] = '\0';
1346 
1347  /*
1348  * Do the strings first
1349  */
1350  for (ts = tstr; ts->name != NULL; ts++)
1351  if (strcmp(ts->name, what) == 0)
1352  break;
1353 
1354  if (ts->name != NULL) {
1355  terminal_alloc(el, ts, how);
1356  terminal_setflags(el);
1357  return 0;
1358  }
1359  /*
1360  * Do the numeric ones second
1361  */
1362  for (tv = tval; tv->name != NULL; tv++)
1363  if (strcmp(tv->name, what) == 0)
1364  break;
1365 
1366  if (tv->name != NULL)
1367  return -1;
1368 
1369  if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1370  tv == &tval[T_am] || tv == &tval[T_xn]) {
1371  if (strcmp(how, "yes") == 0)
1372  el->el_terminal.t_val[tv - tval] = 1;
1373  else if (strcmp(how, "no") == 0)
1374  el->el_terminal.t_val[tv - tval] = 0;
1375  else {
1376  (void) fprintf(el->el_errfile,
1377  "" FSTR ": Bad value `%s'.\n", argv[0], how);
1378  return -1;
1379  }
1380  terminal_setflags(el);
1381  if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1)
1382  return -1;
1383  return 0;
1384  } else {
1385  long i;
1386  char *ep;
1387 
1388  i = strtol(how, &ep, 10);
1389  if (*ep != '\0') {
1390  (void) fprintf(el->el_errfile,
1391  "" FSTR ": Bad value `%s'.\n", argv[0], how);
1392  return -1;
1393  }
1394  el->el_terminal.t_val[tv - tval] = (int) i;
1395  el->el_terminal.t_size.v = Val(T_co);
1396  el->el_terminal.t_size.h = Val(T_li);
1397  if (tv == &tval[T_co] || tv == &tval[T_li])
1398  if (terminal_change_size(el, Val(T_li), Val(T_co))
1399  == -1)
1400  return -1;
1401  return 0;
1402  }
1403 }
1404 
1405 
1406 /* terminal_gettc():
1407  * Get the current terminal characteristics
1408  */
1409 protected int
1410 /*ARGSUSED*/
1411 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv)
1412 {
1413  const struct termcapstr *ts;
1414  const struct termcapval *tv;
1415  char *what;
1416  void *how;
1417 
1418  if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1419  return -1;
1420 
1421  what = argv[1];
1422  how = argv[2];
1423 
1424  /*
1425  * Do the strings first
1426  */
1427  for (ts = tstr; ts->name != NULL; ts++)
1428  if (strcmp(ts->name, what) == 0)
1429  break;
1430 
1431  if (ts->name != NULL) {
1432  *(char **)how = el->el_terminal.t_str[ts - tstr];
1433  return 0;
1434  }
1435  /*
1436  * Do the numeric ones second
1437  */
1438  for (tv = tval; tv->name != NULL; tv++)
1439  if (strcmp(tv->name, what) == 0)
1440  break;
1441 
1442  if (tv->name == NULL)
1443  return -1;
1444 
1445  if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1446  tv == &tval[T_am] || tv == &tval[T_xn]) {
1447  static char yes[] = "yes";
1448  static char no[] = "no";
1449  if (el->el_terminal.t_val[tv - tval])
1450  *(char **)how = yes;
1451  else
1452  *(char **)how = no;
1453  return 0;
1454  } else {
1455  *(int *)how = el->el_terminal.t_val[tv - tval];
1456  return 0;
1457  }
1458 }
1459 
1460 /* terminal_echotc():
1461  * Print the termcap string out with variable substitution
1462  */
1463 protected int
1464 /*ARGSUSED*/
1465 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)),
1466  const Char **argv)
1467 {
1468  char *cap, *scap;
1469  Char *ep;
1470  int arg_need, arg_cols, arg_rows;
1471  int verbose = 0, silent = 0;
1472  char *area;
1473  static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1474  const struct termcapstr *t;
1475  char buf[TC_BUFSIZE];
1476  long i;
1477 
1478  area = buf;
1479 
1480  if (argv == NULL || argv[1] == NULL)
1481  return -1;
1482  argv++;
1483 
1484  if (argv[0][0] == '-') {
1485  switch (argv[0][1]) {
1486  case 'v':
1487  verbose = 1;
1488  break;
1489  case 's':
1490  silent = 1;
1491  break;
1492  default:
1493  /* stderror(ERR_NAME | ERR_TCUSAGE); */
1494  break;
1495  }
1496  argv++;
1497  }
1498  if (!*argv || *argv[0] == '\0')
1499  return 0;
1500  if (Strcmp(*argv, STR("tabs")) == 0) {
1501  (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1502  return 0;
1503  } else if (Strcmp(*argv, STR("meta")) == 0) {
1504  (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1505  return 0;
1506  } else if (Strcmp(*argv, STR("xn")) == 0) {
1507  (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1508  "yes" : "no");
1509  return 0;
1510  } else if (Strcmp(*argv, STR("am")) == 0) {
1511  (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1512  "yes" : "no");
1513  return 0;
1514  } else if (Strcmp(*argv, STR("baud")) == 0) {
1515  (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1516  return 0;
1517  } else if (Strcmp(*argv, STR("rows")) == 0 ||
1518  Strcmp(*argv, STR("lines")) == 0) {
1519  (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1520  return 0;
1521  } else if (Strcmp(*argv, STR("cols")) == 0) {
1522  (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1523  return 0;
1524  }
1525  /*
1526  * Try to use our local definition first
1527  */
1528  scap = NULL;
1529  for (t = tstr; t->name != NULL; t++)
1530  if (strcmp(t->name,
1531  ct_encode_string(*argv, &el->el_scratch)) == 0) {
1532  scap = el->el_terminal.t_str[t - tstr];
1533  break;
1534  }
1535  if (t->name == NULL) {
1536  /* XXX: some systems' tgetstr needs non const */
1537  scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area);
1538  }
1539  if (!scap || scap[0] == '\0') {
1540  if (!silent)
1541  (void) fprintf(el->el_errfile,
1542  "echotc: Termcap parameter `" FSTR "' not found.\n",
1543  *argv);
1544  return -1;
1545  }
1546  /*
1547  * Count home many values we need for this capability.
1548  */
1549  for (cap = scap, arg_need = 0; *cap; cap++)
1550  if (*cap == '%')
1551  switch (*++cap) {
1552  case 'd':
1553  case '2':
1554  case '3':
1555  case '.':
1556  case '+':
1557  arg_need++;
1558  break;
1559  case '%':
1560  case '>':
1561  case 'i':
1562  case 'r':
1563  case 'n':
1564  case 'B':
1565  case 'D':
1566  break;
1567  default:
1568  /*
1569  * hpux has lot's of them...
1570  */
1571  if (verbose)
1572  (void) fprintf(el->el_errfile,
1573  "echotc: Warning: unknown termcap %% `%c'.\n",
1574  *cap);
1575  /* This is bad, but I won't complain */
1576  break;
1577  }
1578 
1579  switch (arg_need) {
1580  case 0:
1581  argv++;
1582  if (*argv && *argv[0]) {
1583  if (!silent)
1584  (void) fprintf(el->el_errfile,
1585  "echotc: Warning: Extra argument `" FSTR "'.\n",
1586  *argv);
1587  return -1;
1588  }
1589  terminal_tputs(el, scap, 1);
1590  break;
1591  case 1:
1592  argv++;
1593  if (!*argv || *argv[0] == '\0') {
1594  if (!silent)
1595  (void) fprintf(el->el_errfile,
1596  "echotc: Warning: Missing argument.\n");
1597  return -1;
1598  }
1599  arg_cols = 0;
1600  i = Strtol(*argv, &ep, 10);
1601  if (*ep != '\0' || i < 0) {
1602  if (!silent)
1603  (void) fprintf(el->el_errfile,
1604  "echotc: Bad value `" FSTR "' for rows.\n",
1605  *argv);
1606  return -1;
1607  }
1608  arg_rows = (int) i;
1609  argv++;
1610  if (*argv && *argv[0]) {
1611  if (!silent)
1612  (void) fprintf(el->el_errfile,
1613  "echotc: Warning: Extra argument `" FSTR
1614  "'.\n", *argv);
1615  return -1;
1616  }
1617  terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1618  break;
1619  default:
1620  /* This is wrong, but I will ignore it... */
1621  if (verbose)
1622  (void) fprintf(el->el_errfile,
1623  "echotc: Warning: Too many required arguments (%d).\n",
1624  arg_need);
1625  /* FALLTHROUGH */
1626  case 2:
1627  argv++;
1628  if (!*argv || *argv[0] == '\0') {
1629  if (!silent)
1630  (void) fprintf(el->el_errfile,
1631  "echotc: Warning: Missing argument.\n");
1632  return -1;
1633  }
1634  i = Strtol(*argv, &ep, 10);
1635  if (*ep != '\0' || i < 0) {
1636  if (!silent)
1637  (void) fprintf(el->el_errfile,
1638  "echotc: Bad value `" FSTR "' for cols.\n",
1639  *argv);
1640  return -1;
1641  }
1642  arg_cols = (int) i;
1643  argv++;
1644  if (!*argv || *argv[0] == '\0') {
1645  if (!silent)
1646  (void) fprintf(el->el_errfile,
1647  "echotc: Warning: Missing argument.\n");
1648  return -1;
1649  }
1650  i = Strtol(*argv, &ep, 10);
1651  if (*ep != '\0' || i < 0) {
1652  if (!silent)
1653  (void) fprintf(el->el_errfile,
1654  "echotc: Bad value `" FSTR "' for rows.\n",
1655  *argv);
1656  return -1;
1657  }
1658  arg_rows = (int) i;
1659  if (*ep != '\0') {
1660  if (!silent)
1661  (void) fprintf(el->el_errfile,
1662  "echotc: Bad value `" FSTR "'.\n", *argv);
1663  return -1;
1664  }
1665  argv++;
1666  if (*argv && *argv[0]) {
1667  if (!silent)
1668  (void) fprintf(el->el_errfile,
1669  "echotc: Warning: Extra argument `" FSTR
1670  "'.\n", *argv);
1671  return -1;
1672  }
1673  terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1674  break;
1675  }
1676  return 0;
1677 }