source: editwin.c @ 2ee9e8d

release-1.6release-1.7release-1.8release-1.9
Last change on this file since 2ee9e8d was 2ee9e8d, checked in by David Benjamin <davidben@mit.edu>, 12 years ago
Drop doupdate call in owl_editwin_redisplay It isn't being used, and we should call doupdate consistently.
  • Property mode set to 100644
File size: 30.6 KB
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[7d4fbcd]1#include "owl.h"
2#include <stdlib.h>
3#include <unistd.h>
4#include <string.h>
[10b866d]5#include <ctype.h>
[7d4fbcd]6
[ebf0128]7#define VALID_EXCURSION (0x9a2b4729)
8
[a88f35a]9typedef struct _owl_editwin_excursion { /*noproto*/
[ebf0128]10  int valid;
11  int index;
[16cfd12a]12  int mark;
[ebf0128]13  int goal_column;
14  int lock;
[a88f35a]15  struct _owl_editwin_excursion *next;
[ebf0128]16} oe_excursion;
17
[a556caa]18struct _owl_editwin { /*noproto*/
19  char *buff;
20  owl_history *hist;
21  int bufflen;
22  int allocated;
23  int index;
[16cfd12a]24  int mark;
[a60edf2]25  char *killbuf;
[a556caa]26  int goal_column;
27  int topindex;
[ebf0128]28  int cursorx;
[a556caa]29  int winlines, wincols, fillcol, wrapcol;
30  WINDOW *curswin;
31  int style;
32  int lock;
33  int dotsend;
34  int echochar;
[ebf0128]35  oe_excursion *excursions;
[a556caa]36
37  char *command;
38  void (*callback)(struct _owl_editwin*);
39  void *cbdata;
40};
41
[e20d8179]42static void oe_reframe(owl_editwin *e);
[bab52da]43static void oe_save_excursion(owl_editwin *e, oe_excursion *x);
[ebf0128]44static void oe_release_excursion(owl_editwin *e, oe_excursion *x);
[bab52da]45static void oe_restore_excursion(owl_editwin *e, oe_excursion *x);
[a60edf2]46static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x);
[e19eb97]47static int oe_count_glyphs(const char *s);
[ebf0128]48static int oe_char_width(gunichar c, int column);
[16cfd12a]49static int oe_region_width(owl_editwin *e, int start, int end, int width);
[bab52da]50static int oe_find_display_line(owl_editwin *e, int *x, int index);
[ebf0128]51static void oe_insert_char(owl_editwin *e, gunichar c);
[bab52da]52static int owl_editwin_limit_maxcols(int v, int maxv);
53static int owl_editwin_check_dotsend(owl_editwin *e);
[e19eb97]54static int owl_editwin_is_char_in(owl_editwin *e, const char *set);
[bab52da]55static gunichar owl_editwin_get_char_at_point(owl_editwin *e);
[e19eb97]56static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s);
57static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len);
[a60edf2]58static int oe_copy_region(owl_editwin *e);
[77f605d]59static char *oe_chunk(owl_editwin *e, int start, int end);
[bab52da]60
[5b5f3e6]61#define INCR 4096
[7d4fbcd]62
[a556caa]63#define WHITESPACE " \n\t"
64
[bab52da]65owl_editwin *owl_editwin_allocate(void)
66{
[8321cb7]67  owl_editwin *e;
68  e = owl_malloc(sizeof(owl_editwin));
69  memset(e, 0, sizeof(*e));
70  return e;
[a556caa]71}
72
[30bb10a]73void owl_editwin_delete(owl_editwin *e)
[6211c76]74{
75  owl_free(e->buff);
76  owl_free(e->killbuf);
77  owl_free(e->command);
78  /* just in case someone forgot to clean up */
79  while (e->excursions) {
80    oe_release_excursion(e, e->excursions);
81  }
82
83  owl_free(e);
84}
85
[e19eb97]86static int oe_count_glyphs(const char *s)
[5b5f3e6]87{
88  int count = 0;
[e19eb97]89  const char *p;
[5b5f3e6]90
91  for(p = s; *p != 0; p = g_utf8_find_next_char(p, NULL))
92    if (!g_unichar_ismark(g_utf8_get_char(p)))
93      count++;
94
95  return count;
96}
97
[bab52da]98static inline void oe_set_index(owl_editwin *e, int index)
99{
[ebf0128]100  if (index != e->index) {
101    e->goal_column = -1;
102    e->cursorx = -1;
103  }
[521bc84]104  e->index = index;
105}
106
[7f0c26f]107static inline void oe_set_mark(owl_editwin *e, int mark)
108{
109  e->mark = mark;
110}
111
112void owl_editwin_set_mark(owl_editwin *e)
113{
114  oe_set_mark(e, e->index);
115  /* owl_function_makemsg("Mark set."); */
116}
117
[cf83b7a]118/* initialize the editwin e.
119 * 'win' is an already initialzed curses window that will be used by editwin
120 */
[c9334b1]121void owl_editwin_init(owl_editwin *e, WINDOW *win, int winlines, int wincols, int style, owl_history *hist)
122{
[e20d8179]123  e->buff=owl_malloc(INCR);
[7d4fbcd]124  e->buff[0]='\0';
125  e->bufflen=0;
[10b866d]126  e->hist=hist;
[7d4fbcd]127  e->allocated=INCR;
[521bc84]128  oe_set_index(e, 0);
[7f0c26f]129  oe_set_mark(e, -1);
[a60edf2]130  if (e->killbuf != NULL)
[27f6487]131    owl_free(e->killbuf);
[a60edf2]132  e->killbuf = NULL;
[a556caa]133  e->goal_column = -1;
[ebf0128]134  e->cursorx = -1;
135  e->topindex = 0;
136  e->excursions = NULL;
137  owl_editwin_set_curswin(e, win, winlines, wincols);
[7d4fbcd]138  e->style=style;
139  if ((style!=OWL_EDITWIN_STYLE_MULTILINE) &&
140      (style!=OWL_EDITWIN_STYLE_ONELINE)) {
141    e->style=OWL_EDITWIN_STYLE_MULTILINE;
142  }
143  e->lock=0;
144  e->dotsend=0;
[c9334b1]145  e->echochar='\0';
[e74c01c]146
[af1920fd]147  /* We get initialized multiple times, but we need to hold on to
148     the callbacks, so we can't NULL them here. */
[e74c01c]149  /*
150    e->command = NULL;
151    e->callback = NULL;
152    e->cbdata = NULL;
153  */
[7d4fbcd]154  if (win) werase(win);
155}
156
[c9334b1]157void owl_editwin_set_curswin(owl_editwin *e, WINDOW *w, int winlines, int wincols)
158{
[7d4fbcd]159  e->curswin=w;
160  e->winlines=winlines;
161  e->wincols=wincols;
[9a6cc40]162  e->fillcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxfillcols(&g));
163  e->wrapcol=owl_editwin_limit_maxcols(wincols-7, owl_global_get_edit_maxwrapcols(&g));
[7d4fbcd]164}
165
[c9334b1]166/* echo the character 'ch' for each normal character keystroke,
167 * excepting locktext.  This is useful for entering passwords etc.  If
168 * ch=='\0' characters are echo'd normally
169 */
170void owl_editwin_set_echochar(owl_editwin *e, int ch)
171{
172  e->echochar=ch;
173}
174
175WINDOW *owl_editwin_get_curswin(owl_editwin *e)
176{
[060b3b4]177  return(e->curswin);
[7d4fbcd]178}
179
[c9334b1]180owl_history *owl_editwin_get_history(owl_editwin *e)
181{
[060b3b4]182  return(e->hist);
[10b866d]183}
184
[c9334b1]185void owl_editwin_set_dotsend(owl_editwin *e)
186{
[7d4fbcd]187  e->dotsend=1;
188}
189
[e19eb97]190void owl_editwin_set_command(owl_editwin *e, const char *command)
[bab52da]191{
[e74c01c]192  if(e->command) owl_free(e->command);
193  e->command = owl_strdup(command);
194}
195
[e19eb97]196const char *owl_editwin_get_command(owl_editwin *e)
[bab52da]197{
[e74c01c]198  if(e->command) return e->command;
199  return "";
200}
201
[bab52da]202void owl_editwin_set_callback(owl_editwin *e, void (*cb)(owl_editwin*))
203{
[e74c01c]204  e->callback = cb;
205}
206
[bab52da]207void (*owl_editwin_get_callback(owl_editwin *e))(owl_editwin*)
208{
[e74c01c]209  return e->callback;
210}
211
[bab52da]212void owl_editwin_set_cbdata(owl_editwin *e, void *data)
213{
[e74c01c]214  e->cbdata = data;
215}
216
[a556caa]217void *owl_editwin_get_cbdata(owl_editwin *e) {
[e74c01c]218  return e->cbdata;
219}
220
221void owl_editwin_do_callback(owl_editwin *e) {
222  void (*cb)(owl_editwin*);
223  cb=owl_editwin_get_callback(e);
224  if(!cb) {
225    owl_function_error("Internal error: No editwin callback!");
226  } else {
[af1920fd]227    /* owl_function_error("text: |%s|", owl_editwin_get_text(e)); */
[e74c01c]228    cb(e);
229  }
230}
231
[bab52da]232static int owl_editwin_limit_maxcols(int v, int maxv)
[c9334b1]233{
[ebf0128]234  /* maxv > 5 ? MAX(v, vax) : v */
[d36f2cb]235  if (maxv > 5 && v > maxv) {
[060b3b4]236    return(maxv);
[d36f2cb]237  } else {
[060b3b4]238    return(v);
[d36f2cb]239  }
240}
241
[c9334b1]242/* set text to be 'locked in' at the beginning of the buffer, any
243 * previous text (including locked text) will be overwritten
244 */
[e19eb97]245void owl_editwin_set_locktext(owl_editwin *e, const char *text)
[c9334b1]246{
[521bc84]247  oe_set_index(e, 0);
[5b5f3e6]248  e->lock = 0;
249  owl_editwin_replace(e, e->bufflen, text);
250  e->buff[e->bufflen] = 0;
251  e->lock=e->bufflen;
[521bc84]252  oe_set_index(e, e->lock);
[2ee9e8d]253  owl_editwin_redisplay(e);
[7d4fbcd]254}
255
[c9334b1]256int owl_editwin_get_style(owl_editwin *e)
257{
[7d4fbcd]258  return(e->style);
259}
260
[c9334b1]261void owl_editwin_new_style(owl_editwin *e, int newstyle, owl_history *h)
262{
[98f1e69]263  e->hist = h;
264
[7d4fbcd]265  if (e->style==newstyle) return;
266
267  if (newstyle==OWL_EDITWIN_STYLE_MULTILINE) {
268    e->style=newstyle;
269  } else if (newstyle==OWL_EDITWIN_STYLE_ONELINE) {
270    e->style=newstyle;
271
272    /* nuke everything after the first line */
[5b5f3e6]273    owl_editwin_move_to_top(e);
274    owl_editwin_move_to_end_of_line(e);
275    owl_editwin_replace(e, oe_count_glyphs(e->buff + e->index),  "");
[7d4fbcd]276  }
277}
278
[c9334b1]279/* completly reinitialize the buffer */
280void owl_editwin_fullclear(owl_editwin *e)
281{
[7d4fbcd]282  owl_free(e->buff);
[10b866d]283  owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist);
[7d4fbcd]284}
285
[c9334b1]286/* clear all text except for locktext and put the cursor at the
287 * beginning
288 */
289void owl_editwin_clear(owl_editwin *e)
290{
291
[6073462]292  int lock = e->lock;
[10b866d]293  int dotsend=e->dotsend;
[7d4fbcd]294  char *locktext=NULL;
[cc6f009]295  char echochar=e->echochar;
[10b866d]296
[6073462]297  if (lock > 0) {
[5b5f3e6]298    locktext = owl_malloc(lock+1);
299    strncpy(locktext, e->buff, lock);
300    locktext[lock] = 0;
[7d4fbcd]301  }
302
303  owl_free(e->buff);
[10b866d]304  owl_editwin_init(e, e->curswin, e->winlines, e->wincols, e->style, e->hist);
[7d4fbcd]305
306  if (lock > 0) {
307    owl_editwin_set_locktext(e, locktext);
308  }
[10b866d]309  if (dotsend) {
310    owl_editwin_set_dotsend(e);
311  }
[cc6f009]312  if (echochar) {
313    owl_editwin_set_echochar(e, echochar);
314  }
[7d4fbcd]315
[5b5f3e6]316  if (locktext)
317    owl_free(locktext);
[6073462]318
[521bc84]319  oe_set_index(e, lock);
[7d4fbcd]320}
321
[c9334b1]322void owl_editwin_recenter(owl_editwin *e)
323{
[a556caa]324  e->topindex = -1;
325}
[e20d8179]326
[a0fbdee]327static void oe_save_excursion(owl_editwin *e, oe_excursion *x)
328{
329  x->index = e->index;
[7f0c26f]330  x->mark = e->mark;
[a0fbdee]331  x->goal_column = e->goal_column;
332  x->lock = e->lock;
[ebf0128]333
334  x->valid = VALID_EXCURSION;
335  x->next = e->excursions;
336  e->excursions = x;
337}
338
339static void oe_release_excursion(owl_editwin *e, oe_excursion *x)
340{
[a85d225]341  oe_excursion **px;
[ebf0128]342
343  x->valid = 0;
[a85d225]344  for (px = &e->excursions; *px != NULL; px = &(*px)->next)
345    if (*px == x) {
346      *px = x->next;
347      return;
348    }
349  abort();
[a0fbdee]350}
351
352static void oe_restore_excursion(owl_editwin *e, oe_excursion *x)
353{
[ebf0128]354  if (x->valid == VALID_EXCURSION) {
355    oe_set_index(e, x->index);
356    e->goal_column = x->goal_column;
[7f0c26f]357    e->mark = x->mark;
[ebf0128]358    e->lock = x->lock;
359
360    oe_release_excursion(e, x);
361  }
[a0fbdee]362}
363
[a60edf2]364static void oe_restore_mark_only(owl_editwin *e, oe_excursion *x)
365{
366  if (x->valid == VALID_EXCURSION) {
367    e->mark = x->mark;
368
369    oe_release_excursion(e, x);
370  }
371}
372
[a88f35a]373/* External interface to oe_save_excursion */
374owl_editwin_excursion *owl_editwin_begin_excursion(owl_editwin *e)
375{
376  owl_editwin_excursion *x = owl_malloc(sizeof *x);
377  oe_save_excursion(e, x);
378  return x;
379}
380
381void owl_editwin_end_excursion(owl_editwin *e, owl_editwin_excursion *x)
382{
383  oe_restore_excursion(e, x);
384  owl_free(x);
385}
386
[e19eb97]387static inline const char *oe_next_point(owl_editwin *e, const char *p)
[e20d8179]388{
[e19eb97]389  const char *boundary = e->buff + e->bufflen + 1;
390  const char *q;
[e20d8179]391
392  q = g_utf8_find_next_char(p, boundary);
393  while (q && g_unichar_ismark(g_utf8_get_char(q)))
394    q = g_utf8_find_next_char(q, boundary);
395
396  if (q == p)
397    return NULL;
398  return q;
399}
400
[e19eb97]401static inline const char *oe_prev_point(owl_editwin *e, const char *p)
[e20d8179]402{
[e19eb97]403  const char *boundary = e->buff + e->lock;
[e20d8179]404
405  p = g_utf8_find_prev_char(boundary, p);
406  while (p && g_unichar_ismark(g_utf8_get_char(p)))
407    p = g_utf8_find_prev_char(boundary, p);
408
409  return p;
410}
411
[ebf0128]412static int oe_char_width(gunichar c, int column)
413{
414  int cw;
415
416  if (c == 9) /* TAB */
417    return TABSIZE - column % TABSIZE;
418
419  cw = mk_wcwidth(c);
420
421  if (cw < 0) /* control characters */
422    cw = 0;
423
424  return cw;
425}
426
[19f765d]427static int oe_find_display_line(owl_editwin *e, int *x, int index)
428{
429  int width = 0, cw;
[ebf0128]430  gunichar c;
[e19eb97]431  const char *p;
[19f765d]432
[77d4402]433  while(1) {
434    /* note the position of the dot */
[2021bea]435    if (x != NULL && index == e->index && width < e->wincols)
[19f765d]436      *x = width;
[77d4402]437
[19f765d]438    /* get the current character */
439    c = g_utf8_get_char(e->buff + index);
440
441    /* figure out how wide it is */
[ebf0128]442    cw = oe_char_width(c, width);
[19f765d]443
[77d4402]444    if (width + cw > e->wincols) {
445      if (x != NULL && *x == width)
446        *x = -1;
[19f765d]447      break;
[77d4402]448    }
[19f765d]449    width += cw;
450
451    if (c == '\n') {
[77d4402]452      if (width < e->wincols)
453        ++index; /* skip the newline */
[19f765d]454      break;
455    }
456
457    /* find the next character */
458    p = oe_next_point(e, e->buff + index);
459    if (p == NULL) { /* we ran off the end */
460      if (x != NULL && e->index > index)
461        *x = width + 1;
462      break;
463    }
464    index = p - e->buff;
[cedc95c]465
[19f765d]466  }
467  return index;
468}
469
[e20d8179]470static void oe_reframe(owl_editwin *e) {
[cedc95c]471  oe_excursion x;
[460fbe8]472  int goal = 1 + e->winlines / 2;
[cedc95c]473  int index;
474  int count = 0;
475  int n, i;
476  int last;
477
478  oe_save_excursion(e, &x);
479  /* step back line-by-line through the buffer until we have >= goal lines of
480     display text */
481  e->lock = 0; /* we can (must) tread on the locktext */
482
483  last = -1;
484  while (count < goal) {
485    index = e->index;
486    owl_editwin_move_to_beginning_of_line(e);
487    if (last == e->index)
488      break;
489    last = e->index;
490    for (n = 0, i = e->index; i < index; n++)
491      i = oe_find_display_line(e, NULL, i);
492    count += n == 0 ? 1 : n;
493    if (count < goal)
494      owl_editwin_point_move(e, -1);
495  }
496
497  e->topindex = e->index;
[521bc84]498  /* if we overshot, backtrack */
499  for (n = 0; n < (count - goal); n++)
500    e->topindex = oe_find_display_line(e, NULL, e->topindex);
[cedc95c]501
502  oe_restore_excursion(e, &x);
[7d4fbcd]503}
504
[3e36085]505static void oe_addnec(owl_editwin *e, int count)
506{
507  int i;
508
509  for (i = 0; i < count; i++)
510    waddch(e->curswin, e->echochar);
511}
512
513static void oe_mvaddnec(owl_editwin *e, int y, int x, int count)
514{
515  wmove(e->curswin, y, x);
516  oe_addnec(e, count);
517}
518
[c9334b1]519/* regenerate the text on the curses window */
[2ee9e8d]520void owl_editwin_redisplay(owl_editwin *e)
[c9334b1]521{
[19f765d]522  int x = -1, y = -1, t;
[77d4402]523  int line, index, lineindex, times = 0;
[7d4fbcd]524
[bd1a1ae]525  do {
[cedc95c]526    werase(e->curswin);
[36a16fc]527
528    if (e->topindex == -1 || e->index < e->topindex)
[e20d8179]529      oe_reframe(e);
530
[bd1a1ae]531    line = 0;
532    index = e->topindex;
533    while(line < e->winlines) {
534      lineindex = index;
[19f765d]535      t = -1;
536      index = oe_find_display_line(e, &t, lineindex);
537      if (x == -1 && t != -1)
538        x = t, y = line;
[3e36085]539      if (index - lineindex) {
540        if (!e->echochar)
541          mvwaddnstr(e->curswin, line, 0,
542                     e->buff + lineindex,
543                     index - lineindex);
544        else {
545          if(lineindex < e->lock) {
546            mvwaddnstr(e->curswin, line, 0,
547                       e->buff + lineindex,
548                       MIN(index - lineindex,
549                           e->lock - lineindex));
550            if (e->lock < index)
551              oe_addnec(e,
552                        oe_region_width(e, e->lock, index,
553                                        oe_region_width(e, lineindex, e->lock, 0)));
554          } else
555            oe_mvaddnec(e, line, 0, oe_region_width(e, line, index, 0));
556        }
557      }
[bd1a1ae]558      line++;
[a556caa]559    }
[19f765d]560    if (x == -1)
[bd1a1ae]561        e->topindex = -1; /* force a reframe */
[77d4402]562    times++;
563  } while(x == -1 && times < 3);
[e20d8179]564
[19f765d]565  wmove(e->curswin, y, x);
[ebf0128]566  e->cursorx = x;
567
[8ae2de9]568  update_panels();
[7d4fbcd]569}
570
[7f0c26f]571static inline void oe_fixup(int *target, int start, int end, int change) {
572  if (*target > start) {
[0d9c90c]573    if (*target <= end)
[8459609]574      *target = end + change;
[7f0c26f]575    else
576      *target += change;
577  }
578}
579
[e19eb97]580int owl_editwin_replace_region(owl_editwin *e, const char *s)
[a88f35a]581{
582  oe_excursion x;
583  int ret;
[5ebc202]584  oe_save_excursion(e, &x);
[a88f35a]585
586  if(e->index > e->mark) {
587    owl_editwin_exchange_point_and_mark(e);
588  }
589
590  ret = owl_editwin_replace_internal(e, e->mark - e->index, s);
591
592  oe_restore_excursion(e, &x);
593
594  return ret;
595}
596
[19a023f]597/* replace 'replace' characters at the point with s, returning the change in size */
[e19eb97]598int owl_editwin_replace(owl_editwin *e, int replace, const char *s)
[ebf0128]599{
[19a023f]600  int start, end, i;
[e19eb97]601  const char *p;
[e9bb404]602
[5b5f3e6]603  if (!g_utf8_validate(s, -1, NULL)) {
604    owl_function_debugmsg("owl_editwin_insert_string: received non-utf-8 string.");
[ebf0128]605    return 0;
[47519e1b]606  }
607
[5b5f3e6]608  start = e->index;
609  for (i = 0, p = e->buff + start; i < replace && p != NULL; i++)
610    p = oe_next_point(e, p);
611  if (p != NULL)
612    end = p - e->buff;
613  else
614    end = e->bufflen;
615
[19a023f]616  return owl_editwin_replace_internal(e, end - start, s);
617}
618
[e19eb97]619static int owl_editwin_replace_internal(owl_editwin *e, int replace, const char *s)
[19a023f]620{
621  int start, end, free, need, size, change;
622  oe_excursion *x;
623
624  start = e->index;
625  end   = start + replace;
626
[5b5f3e6]627  free = e->allocated - e->bufflen + end - start;
628
629  need = strlen(s) - free;
630  if (need > 0) {
631    size = e->allocated + need + INCR - (need % INCR);
[b644688]632    e->buff = owl_realloc(e->buff, size);
[5b5f3e6]633    e->allocated = size;
[47519e1b]634  }
[e9bb404]635
[5b5f3e6]636  memmove(e->buff + start + strlen(s), e->buff + end, e->bufflen + 1 - end);
637  memcpy(e->buff + start, s, strlen(s));
[ebf0128]638  change = start - end + strlen(s);
639  e->bufflen += change;
[5b5f3e6]640  e->index += strlen(s);
[ebf0128]641
[7f0c26f]642  /* fix up the mark */
[3e36085]643  oe_fixup(&e->mark, start, end, change);
644  oe_fixup(&e->topindex, start, end, change);
[ebf0128]645  /* fix up any saved points after the replaced area */
[7f0c26f]646  for (x = e->excursions; x != NULL; x = x->next) {
647    oe_fixup(&x->index, start, end, change);
[3e36085]648    oe_fixup(&x->mark, start, end, change);
[7f0c26f]649  }
[ebf0128]650
[c471e85]651  /* recenter if needed */
652  if (start <= e->topindex)
653    owl_editwin_recenter(e);
654
[ebf0128]655  return change;
[47519e1b]656}
657
[c9334b1]658/* linewrap the word just before the cursor.
659 * returns 0 on success
660 * returns -1 if we could not wrap.
661 */
[fc2677b]662static void _owl_editwin_linewrap_word(owl_editwin *e)
[c9334b1]663{
[fc2677b]664  oe_excursion x;
[84027015]665  gunichar c;
[7d4fbcd]666
[fc2677b]667  oe_save_excursion(e, &x);
[84027015]668
[fc2677b]669  while (owl_editwin_point_move(e, -1)) {
670    c = owl_editwin_get_char_at_point(e);
671    if (owl_util_can_break_after(c) || c == '\n') {
672      if (c != '\n')
673        owl_editwin_replace(e, c != ' ' ? 0 : 1, "\n");
674      break;
[2d4ff14]675    }
[7d4fbcd]676  }
[fc2677b]677
678  oe_restore_excursion(e, &x);
[7d4fbcd]679}
680
[c9334b1]681/* delete the character at the current point, following chars
682 * shift left.
[e20d8179]683 */
[c9334b1]684void owl_editwin_delete_char(owl_editwin *e)
685{
[5b5f3e6]686  owl_editwin_replace(e, 1, "");
[7d4fbcd]687}
688
[c9334b1]689/* Swap the character at point with the character at point-1 and
690 * advance the pointer.  If point is at beginning of buffer do
691 * nothing.  If point is after the last character swap point-1 with
[e20d8179]692 * point-2.  (Behaves as observed in tcsh and emacs).
[c9334b1]693 */
694void owl_editwin_transpose_chars(owl_editwin *e)
695{
[e19eb97]696  const char *middle, *end, *start;
[65b2173]697  char *tmp;
[f2e36b5]698
[47519e1b]699  if (e->bufflen == 0) return;
[e20d8179]700
[5b5f3e6]701  if (e->index == e->bufflen)
702    owl_editwin_point_move(e, -1);     /* point is after last character */
[f2e36b5]703
[5b5f3e6]704  if (owl_editwin_at_beginning_of_buffer(e))
705    return;     /* point is at beginning of buffer, do nothing */
[f2e36b5]706
[47519e1b]707  /* Transpose two utf-8 unicode glyphs. */
[5b5f3e6]708  middle = e->buff + e->index;
[47519e1b]709
[5b5f3e6]710  end = oe_next_point(e, middle);
711  if (end == NULL)
[e20d8179]712    return;
[47519e1b]713
[5b5f3e6]714  start = oe_prev_point(e, middle);
715  if (start == NULL)
[e20d8179]716    return;
[47519e1b]717
[5b5f3e6]718  tmp = owl_malloc((end - start) + 1);
719  tmp[(end - start)] = 0;
720  memcpy(tmp, middle, end - middle);
721  memcpy(tmp + (end - middle), start, middle - start);
722
723  owl_editwin_point_move(e, -1);
724  owl_editwin_replace(e, 2, tmp);
[f2e36b5]725}
726
[c9334b1]727/* insert 'string' at the current point, later text is shifted
728 * right
729 */
[e19eb97]730void owl_editwin_insert_string(owl_editwin *e, const char *s)
[c9334b1]731{
[5b5f3e6]732  owl_editwin_replace(e, 0, s);
[7d4fbcd]733}
734
[a556caa]735/* We assume index is not set to point to a mid-char */
[bab52da]736static gunichar owl_editwin_get_char_at_point(owl_editwin *e)
[c9334b1]737{
[a556caa]738  return g_utf8_get_char(e->buff + e->index);
739}
[7d4fbcd]740
[7f0c26f]741void owl_editwin_exchange_point_and_mark(owl_editwin *e) {
742  int tmp;
743
744  if (e->mark != -1) {
745    tmp = e->mark;
746    owl_editwin_set_mark(e);
747    oe_set_index(e, tmp);
748  }
749}
750
[e20d8179]751int owl_editwin_point_move(owl_editwin *e, int delta)
[84027015]752{
[e19eb97]753  const char *p;
[19f765d]754  int change, d = 0;
[a556caa]755
756  change = MAX(delta, - delta);
757  p = e->buff + e->index;
758
759  while (d < change && p != NULL) {
[e20d8179]760    if (delta > 0)
761      p = oe_next_point(e, p);
762    else
763      p = oe_prev_point(e, p);
764    if (p != NULL) {
[521bc84]765      oe_set_index(e, p - e->buff);
[e20d8179]766      d++;
[a556caa]767    }
768  }
769
770  return delta > 0 ? d : -d;
[84027015]771}
772
[a556caa]773int owl_editwin_at_beginning_of_buffer(owl_editwin *e) {
774  if (e->index == e->lock)
775    return 1;
[84027015]776
[a556caa]777  return 0;
778}
779
780int owl_at_end_of_buffer(owl_editwin *e) {
781  if (e->index == e->bufflen)
782    return 1;
783
784  return 0;
785}
786
[e9c6fc8]787static int owl_editwin_at_beginning_of_line(owl_editwin *e)
[c9334b1]788{
[a0fbdee]789  oe_excursion x;
[a556caa]790  int ret;
[47519e1b]791
[a556caa]792  if (owl_editwin_at_beginning_of_buffer(e))
793    return 1;
[47519e1b]794
[a0fbdee]795  oe_save_excursion(e, &x);
[a556caa]796  owl_editwin_point_move(e, -1);
[bab52da]797  ret = (owl_editwin_get_char_at_point(e) == '\n');
[a0fbdee]798  oe_restore_excursion(e, &x);
[a556caa]799
800  return ret;
801}
802
[e19eb97]803static int owl_editwin_is_char_in(owl_editwin *e, const char *set)
[a556caa]804{
[e19eb97]805  const char *p;
[5b5f3e6]806
807  for (p = set; *p != 0; p = g_utf8_find_next_char(p, NULL))
808    if (owl_editwin_get_char_at_point(e) == g_utf8_get_char(p))
[a556caa]809      return 1;
810  return 0;
811}
812
[e19eb97]813int owl_editwin_move_if_in(owl_editwin *e, int delta, const char *set)
[a556caa]814{
815  int change, distance = 0;
[e20d8179]816  while (owl_editwin_is_char_in(e, set)) {
[a556caa]817    change = owl_editwin_point_move(e, delta);
818    distance += change;
819    if (change == 0)
820      break;
[47519e1b]821  }
[a556caa]822  return distance;
823}
824
[e19eb97]825int owl_editwin_move_if_not_in(owl_editwin *e, int delta, const char *set)
[a556caa]826{
827  int change, distance = 0;
[e20d8179]828  while (!owl_editwin_is_char_in(e, set)) {
[a556caa]829    change = owl_editwin_point_move(e, delta);
830    distance += change;
831    if (change == 0)
832      break;
[7d4fbcd]833  }
[a556caa]834  return distance;
[7d4fbcd]835}
836
[e20d8179]837int owl_editwin_move_to_beginning_of_line(owl_editwin *e)
[47519e1b]838{
[a556caa]839  int distance = 0;
[47519e1b]840
[a556caa]841  if (!owl_editwin_at_beginning_of_line(e)) {
842    /* move off the \n if were at the end of a line */
843    distance += owl_editwin_point_move(e, -1);
844    distance += owl_editwin_move_if_not_in(e, -1, "\n");
845    if (distance && !owl_editwin_at_beginning_of_buffer(e))
846      distance += owl_editwin_point_move(e, 1);
[47519e1b]847  }
[77d4402]848  e->goal_column = 0; /* subtleties */
[84027015]849
[a556caa]850  return distance;
851}
[e20d8179]852
853int owl_editwin_move_to_end_of_line(owl_editwin *e)
[a556caa]854{
855  return owl_editwin_move_if_not_in(e, 1, "\n");
[47519e1b]856}
857
[e20d8179]858int owl_editwin_line_move(owl_editwin *e, int delta)
[c9334b1]859{
[d7043b4]860  int goal_column, change, ll, distance;
861  int count = 0;
[a556caa]862
863  change = MAX(delta, -delta);
864
[d7043b4]865  goal_column = e->goal_column;
866  distance = owl_editwin_move_to_beginning_of_line(e);
867  goal_column = goal_column == -1 ? -distance : goal_column;
[a556caa]868
869  while(count < change) {
870    if (delta > 0) {
871      distance += owl_editwin_move_if_not_in(e, 1, "\n");
872      distance += owl_editwin_point_move(e, 1);
873    } else {
874      /* I really want to assert delta < 0 here */
875      distance += owl_editwin_point_move(e, -1); /* to the newline on
876                                                    the previous line */
877      distance += owl_editwin_move_to_beginning_of_line(e);
878    }
879    count++;
[7d4fbcd]880  }
[a556caa]881
882  distance += (ll = owl_editwin_move_to_end_of_line(e));
883  if (ll > goal_column)
884    distance += owl_editwin_point_move(e, goal_column - ll);
885
886  e->goal_column = goal_column;
887
888  return distance;
[7d4fbcd]889}
890
[c9334b1]891void owl_editwin_backspace(owl_editwin *e)
892{
[7d4fbcd]893  /* delete the char before the current one
894   * and shift later chars left
895   */
[a556caa]896  if(owl_editwin_point_move(e, -1))
[7d4fbcd]897    owl_editwin_delete_char(e);
898}
899
[c9334b1]900void owl_editwin_key_up(owl_editwin *e)
901{
[a556caa]902  owl_editwin_line_move(e, -1);
[7d4fbcd]903}
904
[c9334b1]905void owl_editwin_key_down(owl_editwin *e)
906{
[a556caa]907  owl_editwin_line_move(e, 1);
[7d4fbcd]908}
909
[c9334b1]910void owl_editwin_key_left(owl_editwin *e)
911{
[a556caa]912  owl_editwin_point_move(e, -1);
[7d4fbcd]913}
914
[c9334b1]915void owl_editwin_key_right(owl_editwin *e)
916{
[a556caa]917  owl_editwin_point_move(e, 1);
[7d4fbcd]918}
919
[5b5f3e6]920int owl_editwin_forward_word(owl_editwin *e)
[c9334b1]921{
[5b5f3e6]922  int distance;
[7d4fbcd]923  /* if we're starting on a space, find the first non-space */
[5b5f3e6]924  distance = owl_editwin_move_if_in(e, 1, WHITESPACE);
[7d4fbcd]925
[a556caa]926  /* now find the end of this word */
[5b5f3e6]927  distance += owl_editwin_move_if_not_in(e, 1, WHITESPACE);
928
929  return distance;
930}
931
932void owl_editwin_move_to_nextword(owl_editwin *e)
933{
934  owl_editwin_forward_word(e);
[7d4fbcd]935}
936
[c9334b1]937/* go backwards to the last non-space character
938 */
[5b5f3e6]939int owl_editwin_backward_word(owl_editwin *e)
[c9334b1]940{
[a0fbdee]941  oe_excursion x;
[5b5f3e6]942  int distance = 0;
943  int further = 0;
[a556caa]944  int beginning;
945  /* if in middle of word, beginning of word */
946
947  /* if at beginning of a word, find beginning of previous word */
948
[e20d8179]949  if (owl_editwin_is_char_in(e, WHITESPACE)) {
[a556caa]950    /* if in whitespace past end of word, find a word , the find the beginning*/
[5b5f3e6]951    distance += owl_editwin_move_if_in(e, -1, WHITESPACE); /* leaves us on the last
952                                                              character of the word */
[a0fbdee]953    oe_save_excursion(e, &x);
[a556caa]954    /* are we at the beginning of a word? */
955    owl_editwin_point_move(e, -1);
[e20d8179]956    beginning = owl_editwin_is_char_in(e, WHITESPACE);
[a0fbdee]957    oe_restore_excursion(e, &x);
[a556caa]958    if (beginning)
[5b5f3e6]959      return distance;
[a556caa]960   } else {
961    /* in the middle of the word; */
[a0fbdee]962    oe_save_excursion(e, &x);
[5b5f3e6]963    further += owl_editwin_point_move(e, -1);
[e20d8179]964    if (owl_editwin_is_char_in(e, WHITESPACE)) { /* we were at the beginning */
[5b5f3e6]965      distance += owl_editwin_backward_word(e); /* previous case */
[8321cb7]966      oe_release_excursion(e, &x);
[5b5f3e6]967      return distance + further;
[a556caa]968    } else {
[a0fbdee]969      oe_restore_excursion(e, &x);
[7d4fbcd]970    }
971  }
[5b5f3e6]972  distance += owl_editwin_move_if_not_in(e, -1, WHITESPACE);
[a556caa]973  /* will go past */
974  if (e->index > e->lock)
[5b5f3e6]975    distance += owl_editwin_point_move(e, 1);
976  return distance;
977}
978
979void owl_editwin_move_to_previousword(owl_editwin *e)
980{
981  owl_editwin_backward_word(e);
[7d4fbcd]982}
983
[c9334b1]984void owl_editwin_delete_nextword(owl_editwin *e)
985{
[a0fbdee]986  oe_excursion x;
[a556caa]987
[a0fbdee]988  oe_save_excursion(e, &x);
[a60edf2]989  oe_set_mark(e, e->index);
990  owl_editwin_forward_word(e);
991  owl_editwin_kill_region(e);
992  oe_restore_mark_only(e, &x);
[7d4fbcd]993}
994
[c9334b1]995void owl_editwin_delete_previousword(owl_editwin *e)
996{
[a60edf2]997  oe_excursion x;
[b68f9cd]998
[a60edf2]999  oe_save_excursion(e, &x);
1000  oe_set_mark(e, e->index);
1001  owl_editwin_backward_word(e);
1002  owl_editwin_kill_region(e);
1003  oe_restore_mark_only(e, &x);
[b68f9cd]1004}
1005
[a556caa]1006void owl_editwin_move_to_line_end(owl_editwin *e)
[c9334b1]1007{
[a556caa]1008  owl_editwin_move_to_end_of_line(e);
[7d4fbcd]1009}
1010
[a556caa]1011void owl_editwin_delete_to_endofline(owl_editwin *e)
[c9334b1]1012{
[a0fbdee]1013  oe_excursion x;
[5b5f3e6]1014  int distance;
[a556caa]1015
[a0fbdee]1016  oe_save_excursion(e, &x);
[a60edf2]1017  owl_editwin_set_mark(e);
[5b5f3e6]1018  distance = owl_editwin_move_to_end_of_line(e);
[a60edf2]1019  if (distance)
1020    owl_editwin_kill_region(e);
1021  else
1022    owl_editwin_replace(e, 1, "");
[a0fbdee]1023  oe_restore_excursion(e, &x);
[a60edf2]1024}
1025
1026void owl_editwin_yank(owl_editwin *e)
1027{
1028  if (e->killbuf != NULL)
1029    owl_editwin_replace(e, 0, e->killbuf);
1030}
1031
[e19eb97]1032static const char *oe_copy_buf(owl_editwin *e, const char *buf, int len)
[a60edf2]1033{
1034  char *p;
1035
1036  p = owl_malloc(len + 1);
1037
1038  if (p != NULL) {
1039    owl_free(e->killbuf);
1040    e->killbuf = p;
1041    memcpy(e->killbuf, buf, len);
1042    e->killbuf[len] = 0;
1043  }
1044
1045  return p;
1046}
1047
1048static int oe_copy_region(owl_editwin *e)
1049{
[e19eb97]1050  const char *p;
[a60edf2]1051  int start, end;
1052
1053  if (e->mark == -1)
1054    return 0;
1055
1056  start = MIN(e->index, e->mark);
1057  end = MAX(e->index, e->mark);
1058
1059  p = oe_copy_buf(e, e->buff + start, end - start);
1060  if (p != NULL)
1061    return end - start;
1062  return 0;
1063}
1064
1065void owl_editwin_copy_region_as_kill(owl_editwin *e)
1066{
1067  oe_copy_region(e);
1068}
1069
1070void owl_editwin_kill_region(owl_editwin *e)
1071{
1072  if (e->index > e->mark)
1073    owl_editwin_exchange_point_and_mark(e);
1074
[2184001]1075  owl_editwin_replace_internal(e, oe_copy_region(e), "");
[7d4fbcd]1076}
1077
[c9334b1]1078void owl_editwin_move_to_line_start(owl_editwin *e)
1079{
[a556caa]1080  owl_editwin_move_to_beginning_of_line(e);
[7d4fbcd]1081}
1082
[c9334b1]1083void owl_editwin_move_to_end(owl_editwin *e)
1084{
[521bc84]1085  oe_set_index(e, e->bufflen);
[7d4fbcd]1086}
1087
[c9334b1]1088void owl_editwin_move_to_top(owl_editwin *e)
1089{
[521bc84]1090  oe_set_index(e, e->lock);
[7d4fbcd]1091}
1092
[2fc8397]1093void owl_editwin_backward_paragraph(owl_editwin *e)
1094{
1095  owl_editwin_point_move(e, -1);
1096  for (; e->index >= e->lock; owl_editwin_point_move(e, -1)) {
1097    if (e->index <= e->lock ||
1098        ((e->buff[e->index] == '\n') && (e->buff[e->index - 1]=='\n')))
1099      break;
1100  }
1101}
1102
1103void owl_editwin_forward_paragraph(owl_editwin *e)
1104{
1105  owl_editwin_point_move(e, 1);
1106  /* scan forward to the start of the next paragraph */
1107  for(; e->index < e->bufflen; owl_editwin_point_move(e, 1)) {
1108    if (e->buff[e->index -1] == '\n' && e->buff[e->index] == '\n')
1109      break;
1110  }
1111}
1112
[d41294a]1113int owl_editwin_current_column(owl_editwin *e)
[c9334b1]1114{
[a0fbdee]1115  oe_excursion x;
[fc2677b]1116  int lineindex;
[7d4fbcd]1117
[a0fbdee]1118  oe_save_excursion(e, &x);
[fc2677b]1119  owl_editwin_move_to_beginning_of_line(e);
1120  lineindex = e->index;
1121  oe_restore_excursion(e, &x);
1122  return oe_region_width(e, lineindex, e->index, 0);
1123}
[a556caa]1124
[fc2677b]1125void owl_editwin_fill_paragraph(owl_editwin *e)
1126{
1127  oe_excursion x;
1128  gunichar ch;
1129  int sentence;
[7d4fbcd]1130
[fc2677b]1131  oe_save_excursion(e, &x);
[7d4fbcd]1132
[fc2677b]1133  /* Mark the end of the paragraph */
1134  owl_editwin_forward_paragraph(e);
1135  /* Skip the trailing newline */
1136  owl_editwin_point_move(e, -1);
1137  owl_editwin_set_mark(e);
[7d4fbcd]1138
[fc2677b]1139  owl_editwin_backward_paragraph(e);
[7d4fbcd]1140
[fc2677b]1141  /* Don't mess with the leading newline */
1142  if (owl_editwin_get_char_at_point(e) == '\n')
1143    owl_editwin_point_move(e, 1);
[7d4fbcd]1144
[fc2677b]1145  /*
1146   * First pass: Scan forward replacing all series of spaces with ' '
1147   * (or nothing after CJK ideograms)
1148   */
1149  sentence = 0;
1150  for(;e->index < e->mark; owl_editwin_point_move(e, 1)) {
[50e671c]1151    /* bail if we hit a trailing dot on the buffer */
[fc2677b]1152    if (strcmp(e->buff + e->index, "\n.") == 0) {
1153      owl_editwin_set_mark(e);
[50e671c]1154      break;
[7d4fbcd]1155    }
1156
[fc2677b]1157    ch = owl_editwin_get_char_at_point(e);
[b2c1bd4]1158
[fc2677b]1159    if (owl_util_can_break_after(ch) || ch == '\n') {
1160      if (g_unichar_isspace(ch)) {
1161        owl_editwin_replace(e, 1, " ");
1162      }
1163
[f9d257b]1164      if (sentence && g_unichar_isspace(owl_editwin_get_char_at_point(e))
1165          && e->index < e->mark)
[fc2677b]1166        owl_editwin_point_move(e, 1);
1167
1168      while(g_unichar_isspace(owl_editwin_get_char_at_point(e))
1169            && e->index < e->mark) {
1170        owl_editwin_delete_char(e);
[7d4fbcd]1171      }
1172    }
[fc2677b]1173
1174    if(ch == '.' || ch == '!' || ch == '?')
1175      sentence = 1;
1176    else
1177      sentence = 0;
1178  }
1179
1180  owl_editwin_backward_paragraph(e);
1181
1182  /* Now go through inserting newlines as needed */
1183  while(e->index < e->mark) {
1184    /* if we've travelled too far, linewrap */
[d41294a]1185    if (owl_editwin_current_column(e) >= e->fillcol)
[fc2677b]1186      _owl_editwin_linewrap_word(e);
1187    owl_editwin_point_move(e, 1);
[7d4fbcd]1188  }
1189
[a0fbdee]1190  oe_restore_excursion(e, &x);
[7d4fbcd]1191}
1192
[cf83b7a]1193/* returns true if only whitespace remains */
[c9334b1]1194int owl_editwin_is_at_end(owl_editwin *e)
1195{
[a556caa]1196  return (only_whitespace(e->buff + e->index));
[217a43e]1197}
1198
[bab52da]1199static int owl_editwin_check_dotsend(owl_editwin *e)
[c9334b1]1200{
[dc7884d]1201  int zdot = 0;
[72ab15f]1202  oe_excursion x;
[7d4fbcd]1203
1204  if (!e->dotsend) return(0);
[4ccd92c]1205  if (!owl_editwin_is_at_end(e)) return (0);
[47519e1b]1206
[72ab15f]1207  oe_save_excursion(e, &x);
1208
1209  owl_editwin_point_move(e, -3);
1210
[4ccd92c]1211  if(strncmp(e->buff + e->index, "\n.\n", 3) == 0) {
[dc7884d]1212    owl_editwin_point_move(e, 1);
1213    zdot = 1;
[0509efc]1214  } else if(e->index == e->lock &&
[4ccd92c]1215            strncmp(e->buff + e->index, ".\n", 2) == 0) {
[0509efc]1216    zdot = 1;
1217  }
1218
1219  if(zdot) {
[4ccd92c]1220    owl_editwin_set_mark(e);
1221    owl_editwin_move_to_end(e);
1222    owl_editwin_replace_region(e, "");
[dc7884d]1223  }
[72ab15f]1224
1225  oe_restore_excursion(e, &x);
1226
1227  return zdot;
[7d4fbcd]1228}
1229
[fac5463]1230void owl_editwin_post_process_char(owl_editwin *e, owl_input j)
[c9334b1]1231{
[a556caa]1232  /* XXX force a redisplay? */
[fac5463]1233  if ((j.ch==13 || j.ch==10) && owl_editwin_check_dotsend(e)) {
[435d6b2]1234    owl_command_edit_done(e);
[7d4fbcd]1235    return;
1236  }
[2ee9e8d]1237  owl_editwin_redisplay(e);
[7d4fbcd]1238}
1239
[3e36085]1240static int oe_region_width(owl_editwin *e, int start, int end, int offset)
[16cfd12a]1241{
[e19eb97]1242  const char *p;
[3e36085]1243  int width = offset;
1244 
[16cfd12a]1245  for(p = e->buff + start;
1246      p < e->buff + end;
1247      p = g_utf8_find_next_char(p, NULL))
1248    width += oe_char_width(g_utf8_get_char(p), width);
1249
[3e36085]1250  return width - offset;
[16cfd12a]1251}
1252
[ebf0128]1253static void oe_insert_char(owl_editwin *e, gunichar c)
[fac5463]1254{
[16cfd12a]1255  oe_excursion x;
[5b5f3e6]1256  char tmp[7];
[16cfd12a]1257  int replaced = -1;
[5b5f3e6]1258
[ebf0128]1259  if (c == '\r') /* translate CRs to NLs */
1260    c = '\n';
1261
[16cfd12a]1262  if (!g_unichar_iscntrl(c) || c == '\n' || c== '\t' ) {
[ebf0128]1263    if (c == '\n' && e->style == OWL_EDITWIN_STYLE_ONELINE) {
1264      return;
1265    }
1266
[16cfd12a]1267    if (e->cursorx != -1 && e->cursorx + oe_char_width(c, e->cursorx) > e->wrapcol) {
1268      /* XXX this is actually wrong:
1269       * + If the line has been been wrapped, we can be past the wrap column but
1270       *   e->cursorx be much smaller.
1271       * + If the user went back and inserted a bunch of stuff in the middle of
1272       *   the line, there may be more than one word past the wrap column.
1273       */
1274      oe_save_excursion(e, &x);
1275
1276      if (c == ' ' || c == '\t') {
1277        owl_editwin_point_move(e, -1);
1278        replaced = -owl_editwin_move_if_in(e, -1, " \t");
1279        if (!replaced) {
1280          c = '\n';
1281          replaced = -1;
1282        }
1283      } else {
1284        while(!owl_editwin_at_beginning_of_line(e)) {
1285          owl_editwin_point_move(e, -1);
1286          if (owl_util_can_break_after(owl_editwin_get_char_at_point(e))) {
1287            replaced = -owl_editwin_move_if_in(e, -1, " \t");
1288            break;
1289          }
1290        }
1291        if (owl_editwin_at_beginning_of_line(e))
1292          replaced = -1;
1293      }
1294      if (replaced && !owl_editwin_at_beginning_of_line(e))
1295        owl_editwin_point_move(e, 1);
1296      if (replaced >= 0) {
1297        owl_editwin_replace(e, replaced, "\n");
1298      }
1299      oe_restore_excursion(e, &x);
1300    }
1301
1302    if (replaced >= 0 && (c == ' ' || c == '\t'))
1303      return; /* our work here is done */
1304
[6c171f1]1305    tmp[g_unichar_to_utf8(c, tmp)] = '\0';
[ebf0128]1306    owl_editwin_replace(e, 0, tmp);
1307  }
1308}
1309
1310void owl_editwin_process_char(owl_editwin *e, owl_input j)
1311{
[5b5f3e6]1312  if (j.ch == ERR)
1313    return;
[fac5463]1314  /* Ignore ncurses control characters. */
[e20d8179]1315  if (j.ch < 0x100) {
[ebf0128]1316    oe_insert_char(e, j.uch);
[fac5463]1317  }
1318}
1319
[e19eb97]1320const char *owl_editwin_get_text(owl_editwin *e)
[c9334b1]1321{
[7d4fbcd]1322  return(e->buff+e->lock);
1323}
1324
[d41294a]1325char *owl_editwin_get_region(owl_editwin *e)
1326{
1327  int start, end;
1328  start = e->index;
1329  end   = e->mark;
1330  if(start > end) {
1331    int tmp = end;
1332    end = start;
1333    start = tmp;
1334  }
1335
1336  return oe_chunk(e, start, end);
1337}
1338
[77f605d]1339int owl_editwin_get_echochar(owl_editwin *e)
1340{
[a556caa]1341  return e->echochar;
1342}
[77f605d]1343
1344static char *oe_chunk(owl_editwin *e, int start, int end)
1345{
1346  char *p;
1347 
1348  p = owl_malloc(end - start + 1);
1349  memcpy(p, e->buff + start, end - start);
1350  p[end - start] = 0;
1351
1352  return p;
1353}
1354
[d41294a]1355/*
1356 * The only guarantee made about these values is that comparisons
1357 * between them, as well as comparison between multiple calls to these
1358 * functions without modifying the editwin in-between, are meaningful.
1359 */
1360
1361int owl_editwin_get_point(owl_editwin *e)
1362{
1363  return e->index;
1364}
1365
1366int owl_editwin_get_mark(owl_editwin *e)
1367{
1368  return e->mark;
1369}
1370
[2f21a41]1371
1372/*
1373 * Local Variables:
1374 * mode:C
1375 * c-basic-offset:2
1376 * End:
1377 */
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