source: fmtext.c @ 39cff48

release-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since 39cff48 was 39cff48, checked in by Karl Ramm <kcr@1ts.org>, 12 years ago
Spread the background color across the right hand side of messages Tell curses that a color setting represents the background rendition for the window, then resets the background rendition at the bottom of _owl_fmtext_curs_waddstr, so the window doesn't get filled with the background color of the last message. There is an open question whether the appropriate thing to reset it to is always 0. Fixes #103.
  • Property mode set to 100644
File size: 25.8 KB
RevLine 
[7d4fbcd]1#include "owl.h"
2#include <stdlib.h>
3#include <string.h>
4
[b2b0773]5/* initialize an fmtext with no data */
[5789230]6void owl_fmtext_init_null(owl_fmtext *f)
7{
[9866c3a]8  f->textlen = 0;
9  f->bufflen = 5;
10  f->textbuff = owl_malloc(5);
11  f->textbuff[0] = 0;
12  f->default_attrs = OWL_FMTEXT_ATTR_NONE;
13  f->default_fgcolor = OWL_COLOR_DEFAULT;
[c55ad84]14  f->default_bgcolor = OWL_COLOR_DEFAULT;
[7d4fbcd]15}
16
[a387d12e]17/* Clear the data from an fmtext, but don't deallocate memory. This
18   fmtext can then be appended to again. */
19void owl_fmtext_clear(owl_fmtext *f)
20{
[9866c3a]21  f->textlen = 0;
22  f->textbuff[0] = 0;
23  f->default_attrs = OWL_FMTEXT_ATTR_NONE;
24  f->default_fgcolor = OWL_COLOR_DEFAULT;
[c55ad84]25  f->default_bgcolor = OWL_COLOR_DEFAULT;
[7d4fbcd]26}
27
[a387d12e]28void _owl_fmtext_realloc(owl_fmtext *f, int newlen) /*noproto*/
29{
30    if(newlen + 1 > f->bufflen) {
[9866c3a]31      f->textbuff = owl_realloc(f->textbuff, newlen + 1);
[a387d12e]32      f->bufflen = newlen+1;
33  }
34}
35
[c1522ec]36int owl_fmtext_is_format_char(gunichar c)
[9866c3a]37{
38  if ((c & ~OWL_FMTEXT_UC_ATTR_MASK) == OWL_FMTEXT_UC_ATTR) return 1;
39  if ((c & ~(OWL_FMTEXT_UC_ALLCOLOR_MASK)) == OWL_FMTEXT_UC_COLOR_BASE) return 1;
40  return 0;
41}
[b2b0773]42/* append text to the end of 'f' with attribute 'attr' and color
43 * 'color'
44 */
[e19eb97]45void owl_fmtext_append_attr(owl_fmtext *f, const char *text, char attr, short fgcolor, short bgcolor)
[5789230]46{
[9866c3a]47  char attrbuff[6];
48  int newlen, a = 0, fg = 0, bg = 0;
49 
50  if (attr != OWL_FMTEXT_ATTR_NONE) a=1;
51  if (fgcolor != OWL_COLOR_DEFAULT) fg=1;
52  if (bgcolor != OWL_COLOR_DEFAULT) bg=1;
53
54  /* Plane-16 characters in UTF-8 are 4 bytes long. */
55  newlen = strlen(f->textbuff) + strlen(text) + (8 * (a + fg + bg));
[a387d12e]56  _owl_fmtext_realloc(f, newlen);
[9866c3a]57
58  /* Set attributes */
59  if (a) {
60    memset(attrbuff,0,6);
61    g_unichar_to_utf8(OWL_FMTEXT_UC_ATTR | attr, attrbuff);
62    strcat(f->textbuff, attrbuff);     
63  }
64  if (fg) {
65    memset(attrbuff,0,6);
66    g_unichar_to_utf8(OWL_FMTEXT_UC_FGCOLOR | fgcolor, attrbuff);
67    strcat(f->textbuff, attrbuff);     
68  }
69  if (bg) {
70    memset(attrbuff,0,6);
71    g_unichar_to_utf8(OWL_FMTEXT_UC_BGCOLOR | bgcolor, attrbuff);
72    strcat(f->textbuff, attrbuff);     
73  }
[a387d12e]74 
[7d4fbcd]75  strcat(f->textbuff, text);
[9866c3a]76
77  /* Reset attributes */
78  if (bg) strcat(f->textbuff, OWL_FMTEXT_UTF8_BGDEFAULT);
79  if (fg) strcat(f->textbuff, OWL_FMTEXT_UTF8_FGDEFAULT);
80  if (a)  strcat(f->textbuff, OWL_FMTEXT_UTF8_ATTR_NONE);
[7d4fbcd]81  f->textlen=newlen;
82}
83
[b2b0773]84/* Append normal, uncolored text 'text' to 'f' */
[e19eb97]85void owl_fmtext_append_normal(owl_fmtext *f, const char *text)
[5789230]86{
[8fa9562]87  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]88}
89
[1490327]90/* Append normal, uncolored text specified by format string to 'f' */
[e19eb97]91void owl_fmtext_appendf_normal(owl_fmtext *f, const char *fmt, ...)
[1490327]92{
93  va_list ap;
94  char *buff;
95
96  va_start(ap, fmt);
97  buff = g_strdup_vprintf(fmt, ap);
98  va_end(ap);
99  if (!buff)
100    return;
101  owl_fmtext_append_attr(f, buff, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
102}
103
[b2b0773]104/* Append normal text 'text' to 'f' with color 'color' */
[e19eb97]105void owl_fmtext_append_normal_color(owl_fmtext *f, const char *text, int fgcolor, int bgcolor)
[5789230]106{
[8fa9562]107  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, fgcolor, bgcolor);
[7d4fbcd]108}
109
[b2b0773]110/* Append bold text 'text' to 'f' */
[e19eb97]111void owl_fmtext_append_bold(owl_fmtext *f, const char *text)
[5789230]112{
[8fa9562]113  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]114}
115
[b2b0773]116/* Append reverse video text 'text' to 'f' */
[e19eb97]117void owl_fmtext_append_reverse(owl_fmtext *f, const char *text)
[5789230]118{
[8fa9562]119  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]120}
121
[b2b0773]122/* Append reversed and bold, uncolored text 'text' to 'f' */
[e19eb97]123void owl_fmtext_append_reversebold(owl_fmtext *f, const char *text)
[5789230]124{
[8fa9562]125  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE | OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]126}
127
[9866c3a]128/* Add the attribute 'attr' to the default atts for the text in 'f' */
129void owl_fmtext_addattr(owl_fmtext *f, char attr)
[5789230]130{
[7d4fbcd]131  /* add the attribute to all text */
[9866c3a]132  f->default_attrs |= attr;
[7d4fbcd]133}
134
[9866c3a]135/* Set the default foreground color for this fmtext to 'color'.
136 * Only affects text that is colored default.
[b2b0773]137 */
[5789230]138void owl_fmtext_colorize(owl_fmtext *f, int color)
139{
[9866c3a]140  f->default_fgcolor = color;
[8fa9562]141}
142
[9866c3a]143/* Set the default foreground color for this fmtext to 'color'.
144 * Only affects text that is colored default.
145 */
[8fa9562]146void owl_fmtext_colorizebg(owl_fmtext *f, int color)
147{
[9866c3a]148  f->default_bgcolor = color;
149}
[7d4fbcd]150
[9866c3a]151/* Internal function. Parse attrbute character. */
152void _owl_fmtext_update_attributes(gunichar c, char *attr, short *fgcolor, short *bgcolor) /*noproto*/
153{
154  if ((c & OWL_FMTEXT_UC_ATTR) == OWL_FMTEXT_UC_ATTR) {
155    *attr = c & OWL_FMTEXT_UC_ATTR_MASK;
156  }
[6f6330b]157  else if ((c & OWL_FMTEXT_UC_COLOR_BASE) == OWL_FMTEXT_UC_COLOR_BASE) {
158    if ((c & OWL_FMTEXT_UC_BGCOLOR) == OWL_FMTEXT_UC_BGCOLOR) {
159      *bgcolor = (c == OWL_FMTEXT_UC_BGDEFAULT
160                  ? OWL_COLOR_DEFAULT
161                  : c & OWL_FMTEXT_UC_COLOR_MASK);
162    }
163    else if ((c & OWL_FMTEXT_UC_FGCOLOR) == OWL_FMTEXT_UC_FGCOLOR) {
164      *fgcolor = (c == OWL_FMTEXT_UC_FGDEFAULT
165                  ? OWL_COLOR_DEFAULT
166                  : c & OWL_FMTEXT_UC_COLOR_MASK);
167    }
[7d4fbcd]168  }
169}
170
[9866c3a]171/* Internal function. Scan for attribute characters. */
[075ba92]172void _owl_fmtext_scan_attributes(const owl_fmtext *f, int start, char *attr, short *fgcolor, short *bgcolor) /*noproto*/
[9866c3a]173{
[e19eb97]174  const char *p;
[9866c3a]175  p = strchr(f->textbuff, OWL_FMTEXT_UC_STARTBYTE_UTF8);
176  while (p && p < f->textbuff + start) {
177    _owl_fmtext_update_attributes(g_utf8_get_char(p), attr, fgcolor, bgcolor);
178    p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
179  }
180} 
181
[b2b0773]182/* Internal function.  Append text from 'in' between index 'start' and
[db1af5fa]183 * 'stop', inclusive, to the end of 'f'. This function works with
184 * bytes.
[b2b0773]185 */
[075ba92]186void _owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in, int start, int stop) /*noproto*/
[9866c3a]187{
188  char attrbuff[6];
189  int newlen, a = 0, fg = 0, bg = 0;
190  char attr = 0;
191  short fgcolor = OWL_COLOR_DEFAULT;
192  short bgcolor = OWL_COLOR_DEFAULT;
193
194  _owl_fmtext_scan_attributes(in, start, &attr, &fgcolor, &bgcolor);
195  if (attr != OWL_FMTEXT_ATTR_NONE) a=1;
196  if (fgcolor != OWL_COLOR_DEFAULT) fg=1;
197  if (bgcolor != OWL_COLOR_DEFAULT) bg=1;
198
199  /* We will reset to defaults after appending the text. We may need
200     to set initial attributes. */
201  newlen=strlen(f->textbuff)+(stop-start+1) + (4 * (a + fg + bg)) + 12;
[a387d12e]202  _owl_fmtext_realloc(f, newlen);
[7d4fbcd]203
[9866c3a]204  if (a) {
205    memset(attrbuff,0,6);
206    g_unichar_to_utf8(OWL_FMTEXT_UC_ATTR | attr, attrbuff);
207    strcat(f->textbuff, attrbuff);     
208  }
209  if (fg) {
210    memset(attrbuff,0,6);
211    g_unichar_to_utf8(OWL_FMTEXT_UC_FGCOLOR | fgcolor, attrbuff);
212    strcat(f->textbuff, attrbuff);     
213  }
214  if (bg) {
215    memset(attrbuff,0,6);
216    g_unichar_to_utf8(OWL_FMTEXT_UC_BGCOLOR | bgcolor, attrbuff);
217    strcat(f->textbuff, attrbuff);     
218  }
219
[7d4fbcd]220  strncat(f->textbuff, in->textbuff+start, stop-start+1);
[9866c3a]221
222  /* Reset attributes */
223  strcat(f->textbuff, OWL_FMTEXT_UTF8_BGDEFAULT);
224  strcat(f->textbuff, OWL_FMTEXT_UTF8_FGDEFAULT);
225  strcat(f->textbuff, OWL_FMTEXT_UTF8_ATTR_NONE);
226
[7d4fbcd]227  f->textbuff[newlen]='\0';
228  f->textlen=newlen;
229}
230
[b2b0773]231/* append fmtext 'in' to 'f' */
[075ba92]232void owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in)
[5789230]233{
234  _owl_fmtext_append_fmtext(f, in, 0, in->textlen);
235
236}
237
[b2b0773]238/* Append 'nspaces' number of spaces to the end of 'f' */
[5789230]239void owl_fmtext_append_spaces(owl_fmtext *f, int nspaces)
240{
[7d4fbcd]241  int i;
242  for (i=0; i<nspaces; i++) {
243    owl_fmtext_append_normal(f, " ");
244  }
245}
246
[b2b0773]247/* Return a plain version of the fmtext.  Caller is responsible for
248 * freeing the return
249 */
[075ba92]250char *owl_fmtext_print_plain(const owl_fmtext *f)
[5789230]251{
[5376a95]252  return owl_strip_format_chars(f->textbuff);
[e1c4636]253}
254
[9866c3a]255void _owl_fmtext_wattrset(WINDOW *w, int attrs) /*noproto*/
256{
257  wattrset(w, A_NORMAL);
258  if (attrs & OWL_FMTEXT_ATTR_BOLD) wattron(w, A_BOLD);
259  if (attrs & OWL_FMTEXT_ATTR_REVERSE) wattron(w, A_REVERSE);
260  if (attrs & OWL_FMTEXT_ATTR_UNDERLINE) wattron(w, A_UNDERLINE);
261}
[16c6cca]262
263void _owl_fmtext_update_colorpair(short fg, short bg, short *pair) /*noproto*/
264{
265  if (owl_global_get_hascolors(&g)) {
266    *pair = owl_fmtext_get_colorpair(fg, bg);
267  }
268}
269
270void _owl_fmtext_wcolor_set(WINDOW *w, short pair) /*noproto*/
271{
272  if (owl_global_get_hascolors(&g)) {
273      wcolor_set(w,pair,NULL);
[39cff48]274      wbkgdset(w, COLOR_PAIR(pair));
[16c6cca]275  }
276}
277
[b2b0773]278/* add the formatted text to the curses window 'w'.  The window 'w'
279 * must already be initiatlized with curses
280 */
[075ba92]281void _owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w, int do_search) /*noproto*/
[9866c3a]282{
283  /* char *tmpbuff; */
284  /* int position, trans1, trans2, trans3, len, lastsame; */
285  char *s, *p;
286  char attr;
[16c6cca]287  short fg, bg, pair;
[9866c3a]288 
[f2f9314]289  if (w==NULL) {
290    owl_function_debugmsg("Hit a null window in owl_fmtext_curs_waddstr.");
291    return;
292  }
293
[9866c3a]294  s = f->textbuff;
295  /* Set default attributes. */
296  attr = f->default_attrs;
297  fg = f->default_fgcolor;
298  bg = f->default_bgcolor;
299  _owl_fmtext_wattrset(w, attr);
[16c6cca]300  _owl_fmtext_update_colorpair(fg, bg, &pair);
301  _owl_fmtext_wcolor_set(w, pair);
[7d4fbcd]302
[9866c3a]303  /* Find next possible format character. */
304  p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
305  while(p) {
[c1522ec]306    if (owl_fmtext_is_format_char(g_utf8_get_char(p))) {
[9866c3a]307      /* Deal with all text from last insert to here. */
308      char tmp;
309   
310      tmp = p[0];
311      p[0] = '\0';
[41c9a96]312      if (owl_global_is_search_active(&g)) {
[9866c3a]313        /* Search is active, so highlight search results. */
[41c9a96]314        char tmp2;
315        int start, end;
316        while (owl_regex_compare(owl_global_get_search_re(&g), s, &start, &end) == 0) {
[9866c3a]317          /* Found search string, highlight it. */
318
[41c9a96]319          tmp2 = s[start];
320          s[start] = '\0';
[9866c3a]321          waddstr(w, s);
[41c9a96]322          s[start] = tmp2;
[9866c3a]323
[987a93c]324          _owl_fmtext_wattrset(w, attr ^ OWL_FMTEXT_ATTR_REVERSE);
[16c6cca]325          _owl_fmtext_wcolor_set(w, pair);
326         
[41c9a96]327          tmp2 = s[end];
328          s[end] = '\0';
329          waddstr(w, s + start);
330          s[end] = tmp2;
[9866c3a]331
[16c6cca]332          _owl_fmtext_wattrset(w, attr);
333          _owl_fmtext_wcolor_set(w, pair);
[9866c3a]334
[41c9a96]335          s += end;
[9866c3a]336        }
337      }
338      /* Deal with remaining part of string. */
339      waddstr(w, s);
340      p[0] = tmp;
341
342      /* Deal with new attributes. Initialize to defaults, then
343         process all consecutive formatting characters. */
344      attr = f->default_attrs;
345      fg = f->default_fgcolor;
346      bg = f->default_bgcolor;
[c1522ec]347      while (p && owl_fmtext_is_format_char(g_utf8_get_char(p))) {
[9866c3a]348        _owl_fmtext_update_attributes(g_utf8_get_char(p), &attr, &fg, &bg);
349        p = g_utf8_next_char(p);
[7d4fbcd]350      }
[9866c3a]351      _owl_fmtext_wattrset(w, attr | f->default_attrs);
[16c6cca]352      if (fg == OWL_COLOR_DEFAULT) fg = f->default_fgcolor;
353      if (bg == OWL_COLOR_DEFAULT) bg = f->default_bgcolor;
354      _owl_fmtext_update_colorpair(fg, bg, &pair);
355      _owl_fmtext_wcolor_set(w, pair);
356
[9866c3a]357      /* Advance to next non-formatting character. */
358      s = p;
359      p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
360    }
361    else {
362      p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
[7d4fbcd]363    }
364  }
[9866c3a]365  if (s) {
366    waddstr(w, s);
367  }
[39cff48]368  wbkgdset(w, 0);
[7d4fbcd]369}
370
[075ba92]371void owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w)
[47519e1b]372{
373  _owl_fmtext_curs_waddstr(f, w, owl_global_is_search_active(&g));
374}
375
[075ba92]376void owl_fmtext_curs_waddstr_without_search(const owl_fmtext *f, WINDOW *w)
[47519e1b]377{
378  _owl_fmtext_curs_waddstr(f, w, 0);
379}
[7d4fbcd]380
[b2b0773]381/* start with line 'aline' (where the first line is 0) and print
382 * 'lines' number of lines into 'out'
383 */
[075ba92]384int owl_fmtext_truncate_lines(const owl_fmtext *in, int aline, int lines, owl_fmtext *out)
[5789230]385{
[e19eb97]386  const char *ptr1, *ptr2;
[7d4fbcd]387  int i, offset;
388 
389  /* find the starting line */
[9866c3a]390  ptr1 = in->textbuff;
391  for (i = 0; i < aline; i++) {
392    ptr1 = strchr(ptr1, '\n');
393    if (!ptr1) return(-1);
394    ptr1++;
[7d4fbcd]395  }
[9866c3a]396 
[7d4fbcd]397  /* ptr1 now holds the starting point */
398
[c55ad84]399  /* copy the default attributes */
400  out->default_attrs = in->default_attrs;
401  out->default_fgcolor = in->default_fgcolor;
402  out->default_bgcolor = in->default_bgcolor;
403   
[7d4fbcd]404  /* copy in the next 'lines' lines */
[9866c3a]405  if (lines < 1) return(-1);
[7d4fbcd]406
[9866c3a]407  for (i = 0; i < lines; i++) {
408    offset = ptr1 - in->textbuff;
409    ptr2 = strchr(ptr1, '\n');
[7d4fbcd]410    if (!ptr2) {
[9866c3a]411      _owl_fmtext_append_fmtext(out, in, offset, (in->textlen) - 1);
[7d4fbcd]412      return(-1);
413    }
[9866c3a]414    _owl_fmtext_append_fmtext(out, in, offset, (ptr2 - ptr1) + offset);
415    ptr1 = ptr2 + 1;
[7d4fbcd]416  }
417  return(0);
418}
419
[b2b0773]420/* Truncate the message so that each line begins at column 'acol' and
421 * ends at 'bcol' or sooner.  The first column is number 0.  The new
[dd6af02]422 * message is placed in 'out'.  The message is expected to end in a
423 * new line for now.
[7b4d90e]424 *
425 * NOTE: This needs to be modified to deal with backing up if we find
[fb2f9ab]426 * a SPACING COMBINING MARK at the end of a line. If that happens, we
427 * should back up to the last non-mark character and stop there.
[7b4d90e]428 *
429 * NOTE: If a line ends at bcol, we omit the newline. This is so printing
430 * to ncurses works.
[b2b0773]431 */
[075ba92]432void owl_fmtext_truncate_cols(const owl_fmtext *in, int acol, int bcol, owl_fmtext *out)
[5789230]433{
[e19eb97]434  const char *ptr_s, *ptr_e, *ptr_c, *last;
[9866c3a]435  int col, st, padding, chwidth;
[7d4fbcd]436
[c55ad84]437  /* copy the default attributes */
438  out->default_attrs = in->default_attrs;
439  out->default_fgcolor = in->default_fgcolor;
440  out->default_bgcolor = in->default_bgcolor;
441
[7d4fbcd]442  last=in->textbuff+in->textlen-1;
[28ee32b]443  ptr_s=in->textbuff;
[9866c3a]444  while (ptr_s <= last) {
[28ee32b]445    ptr_e=strchr(ptr_s, '\n');
446    if (!ptr_e) {
[dd6af02]447      /* but this shouldn't happen if we end in a \n */
448      break;
[7d4fbcd]449    }
450   
[9866c3a]451    if (ptr_e == ptr_s) {
[7d4fbcd]452      owl_fmtext_append_normal(out, "\n");
[9866c3a]453      ++ptr_s;
[7d4fbcd]454      continue;
455    }
456
[28ee32b]457    col = 0;
[9866c3a]458    st = 0;
[dd24b6a]459    padding = 0;
[47519e1b]460    chwidth = 0;
[28ee32b]461    ptr_c = ptr_s;
[3a7cf49]462    while(ptr_c < ptr_e) {
[28ee32b]463      gunichar c = g_utf8_get_char(ptr_c);
[c1522ec]464      if (!owl_fmtext_is_format_char(c)) {
[47519e1b]465        chwidth = mk_wcwidth(c);
[3a7cf49]466        if (col + chwidth > bcol) break;
467       
[9866c3a]468        if (col >= acol) {
469          if (st == 0) {
470            ptr_s = ptr_c;
471            padding = col - acol;
472            ++st;
473          }
[dd24b6a]474        }
[9866c3a]475        col += chwidth;
476        chwidth = 0;
[28ee32b]477      }
[9866c3a]478      ptr_c = g_utf8_next_char(ptr_c);
[dd24b6a]479    }
[9866c3a]480    if (st) {
481      /* lead padding */
482      owl_fmtext_append_spaces(out, padding);
[3a7cf49]483      if (ptr_c == ptr_e) {
484        /* We made it to the newline. */
485        _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff);
[9866c3a]486      }
[db1af5fa]487      else if (chwidth > 1) {
488        /* Last char is wide, truncate. */
489        _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff - 1);
490        owl_fmtext_append_normal(out, "\n");
491      }
[9866c3a]492      else {
[db1af5fa]493        /* Last char fits perfectly, We skip to the next char and back
494         * up a byte to make sure we get it all.
495         */
496        ptr_c = g_utf8_next_char(ptr_c);
497        _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff - 1);
[28ee32b]498      }
[dd24b6a]499    }
500    else {
501      owl_fmtext_append_normal(out, "\n");
[28ee32b]502    }
[dd6af02]503    ptr_s = g_utf8_next_char(ptr_e);
[7d4fbcd]504  }
505}
506
[b2b0773]507/* Return the number of lines in 'f' */
[075ba92]508int owl_fmtext_num_lines(const owl_fmtext *f)
[5789230]509{
[7d4fbcd]510  int lines, i;
511
[af2ca19]512  if (f->textlen==0) return(0);
513 
[7d4fbcd]514  lines=0;
[af2ca19]515  for (i=0; i<f->textlen; i++) {
[7d4fbcd]516    if (f->textbuff[i]=='\n') lines++;
517  }
518
519  /* if the last char wasn't a \n there's one more line */
520  if (f->textbuff[i-1]!='\n') lines++;
521
522  return(lines);
523}
524
[075ba92]525const char *owl_fmtext_get_text(const owl_fmtext *f)
[5789230]526{
[7d4fbcd]527  return(f->textbuff);
528}
529
[a0a5179]530/* set the charater at 'index' to be 'char'.  If index is out of
[9866c3a]531 * bounds don't do anything. If c or char at index is not ASCII, don't
532 * do anything because it's not UTF-8 safe. */
533void owl_fmtext_set_char(owl_fmtext *f, int index, char ch)
[5789230]534{
[4b464a4]535  if ((index < 0) || (index > f->textlen-1)) return;
[9866c3a]536  /* NOT ASCII*/
537  if (f->textbuff[index] & 0x80 || ch & 0x80) return; 
[4b464a4]538  f->textbuff[index]=ch;
539}
540
[b2b0773]541/* Make a copy of the fmtext 'src' into 'dst' */
[075ba92]542void owl_fmtext_copy(owl_fmtext *dst, const owl_fmtext *src)
[5789230]543{
[b2b0773]544  int mallocsize;
545
546  if (src->textlen==0) {
547    mallocsize=5;
548  } else {
549    mallocsize=src->textlen+2;
550  }
[7d4fbcd]551  dst->textlen=src->textlen;
[005fc22]552  dst->bufflen=mallocsize;
[bd3f232]553  dst->textbuff=owl_malloc(mallocsize);
[6bf73ce]554  memcpy(dst->textbuff, src->textbuff, src->textlen+1);
[9866c3a]555  dst->default_attrs = src->default_attrs;
556  dst->default_fgcolor = src->default_fgcolor;
557  dst->default_bgcolor = src->default_bgcolor;
[1fd0b25]558}
559
[b2b0773]560/* return 1 if the string is found, 0 if not.  This is a case
561 *  insensitive search.
[5789230]562 */
[89b2daf]563int owl_fmtext_search(const owl_fmtext *f, const owl_regex *re)
[5789230]564{
[41c9a96]565  if (owl_regex_compare(re, f->textbuff, NULL, NULL) == 0) return(1);
[1fd0b25]566  return(0);
567}
[12c35df]568
569
570/* Append the text 'text' to 'f' and interpret the zephyr style
571 * formatting syntax to set appropriate attributes.
572 */
[e19eb97]573void owl_fmtext_append_ztext(owl_fmtext *f, const char *text)
[12c35df]574{
575  int stacksize, curattrs, curcolor;
[e19eb97]576  const char *ptr, *txtptr, *tmpptr;
[65b2173]577  char *buff;
[d754b0a]578  int attrstack[32], chrstack[32], colorstack[32];
[12c35df]579
580  curattrs=OWL_FMTEXT_ATTR_NONE;
581  curcolor=OWL_COLOR_DEFAULT;
582  stacksize=0;
583  txtptr=text;
584  while (1) {
585    ptr=strpbrk(txtptr, "@{[<()>]}");
586    if (!ptr) {
587      /* add all the rest of the text and exit */
[8fa9562]588      owl_fmtext_append_attr(f, txtptr, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]589      return;
590    } else if (ptr[0]=='@') {
591      /* add the text up to this point then deal with the stack */
592      buff=owl_malloc(ptr-txtptr+20);
593      strncpy(buff, txtptr, ptr-txtptr);
594      buff[ptr-txtptr]='\0';
[8fa9562]595      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]596      owl_free(buff);
597
598      /* update pointer to point at the @ */
599      txtptr=ptr;
600
601      /* now the stack */
602
603      /* if we've hit our max stack depth, print the @ and move on */
604      if (stacksize==32) {
[1bdffcb]605        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
606        txtptr++;
607        continue;
[12c35df]608      }
609
610      /* if it's an @@, print an @ and continue */
611      if (txtptr[1]=='@') {
[1bdffcb]612        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
613        txtptr+=2;
614        continue;
[12c35df]615      }
[1bdffcb]616       
[12c35df]617      /* if there's no opener, print the @ and continue */
618      tmpptr=strpbrk(txtptr, "(<[{ ");
619      if (!tmpptr || tmpptr[0]==' ') {
[1bdffcb]620        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
621        txtptr++;
622        continue;
[12c35df]623      }
624
625      /* check what command we've got, push it on the stack, start
[1bdffcb]626         using it, and continue ... unless it's a color command */
[12c35df]627      buff=owl_malloc(tmpptr-ptr+20);
628      strncpy(buff, ptr, tmpptr-ptr);
629      buff[tmpptr-ptr]='\0';
630      if (!strcasecmp(buff, "@bold")) {
[1bdffcb]631        attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
632        chrstack[stacksize]=tmpptr[0];
[d754b0a]633        colorstack[stacksize]=curcolor;
[1bdffcb]634        stacksize++;
635        curattrs|=OWL_FMTEXT_ATTR_BOLD;
636        txtptr+=6;
637        owl_free(buff);
638        continue;
[12c35df]639      } else if (!strcasecmp(buff, "@b")) {
[1bdffcb]640        attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
641        chrstack[stacksize]=tmpptr[0];
[d754b0a]642        colorstack[stacksize]=curcolor;
[1bdffcb]643        stacksize++;
644        curattrs|=OWL_FMTEXT_ATTR_BOLD;
645        txtptr+=3;
646        owl_free(buff);
647        continue;
[12c35df]648      } else if (!strcasecmp(buff, "@i")) {
[1bdffcb]649        attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
650        chrstack[stacksize]=tmpptr[0];
[d754b0a]651        colorstack[stacksize]=curcolor;
[1bdffcb]652        stacksize++;
653        curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
654        txtptr+=3;
655        owl_free(buff);
656        continue;
[12c35df]657      } else if (!strcasecmp(buff, "@italic")) {
[1bdffcb]658        attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
659        chrstack[stacksize]=tmpptr[0];
[d754b0a]660        colorstack[stacksize]=curcolor;
[1bdffcb]661        stacksize++;
662        curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
663        txtptr+=8;
664        owl_free(buff);
665        continue;
[d754b0a]666      } else if (!strcasecmp(buff, "@")) {
667        attrstack[stacksize]=OWL_FMTEXT_ATTR_NONE;
668        chrstack[stacksize]=tmpptr[0];
669        colorstack[stacksize]=curcolor;
670        stacksize++;
671        txtptr+=2;
672        owl_free(buff);
673        continue;
[1bdffcb]674
675        /* if it's a color read the color, set the current color and
[12c35df]676           continue */
677      } else if (!strcasecmp(buff, "@color") 
[1bdffcb]678                 && owl_global_get_hascolors(&g)
679                 && owl_global_is_colorztext(&g)) {
680        owl_free(buff);
681        txtptr+=7;
682        tmpptr=strpbrk(txtptr, "@{[<()>]}");
683        if (tmpptr &&
684            ((txtptr[-1]=='(' && tmpptr[0]==')') ||
685             (txtptr[-1]=='<' && tmpptr[0]=='>') ||
686             (txtptr[-1]=='[' && tmpptr[0]==']') ||
687             (txtptr[-1]=='{' && tmpptr[0]=='}'))) {
688
689          /* grab the color name */
690          buff=owl_malloc(tmpptr-txtptr+20);
691          strncpy(buff, txtptr, tmpptr-txtptr);
692          buff[tmpptr-txtptr]='\0';
693
694          /* set it as the current color */
695          curcolor=owl_util_string_to_color(buff);
696          if (curcolor==-1) curcolor=OWL_COLOR_DEFAULT;
697          owl_free(buff);
698          txtptr=tmpptr+1;
699          continue;
700
701        } else {
702
703        }
[12c35df]704
705      } else {
[1bdffcb]706        /* if we didn't understand it, we'll print it.  This is different from zwgc
707         * but zwgc seems to be smarter about some screw cases than I am
708         */
709        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
710        txtptr++;
711        continue;
[12c35df]712      }
713
714    } else if (ptr[0]=='}' || ptr[0]==']' || ptr[0]==')' || ptr[0]=='>') {
715      /* add the text up to this point first */
716      buff=owl_malloc(ptr-txtptr+20);
717      strncpy(buff, txtptr, ptr-txtptr);
718      buff[ptr-txtptr]='\0';
[8fa9562]719      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]720      owl_free(buff);
721
722      /* now deal with the closer */
723      txtptr=ptr;
724
725      /* first, if the stack is empty we must bail (just print and go) */
726      if (stacksize==0) {
[1bdffcb]727        buff=owl_malloc(5);
728        buff[0]=ptr[0];
729        buff[1]='\0';
730        owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
731        owl_free(buff);
732        txtptr++;
733        continue;
[12c35df]734      }
735
736      /* if the closing char is what's on the stack, turn off the
737         attribue and pop the stack */
738      if ((ptr[0]==')' && chrstack[stacksize-1]=='(') ||
[1bdffcb]739          (ptr[0]=='>' && chrstack[stacksize-1]=='<') ||
740          (ptr[0]==']' && chrstack[stacksize-1]=='[') ||
741          (ptr[0]=='}' && chrstack[stacksize-1]=='{')) {
742        int i;
743        stacksize--;
744        curattrs=OWL_FMTEXT_ATTR_NONE;
[d754b0a]745        curcolor = colorstack[stacksize];
[1bdffcb]746        for (i=0; i<stacksize; i++) {
747          curattrs|=attrstack[i];
748        }
749        txtptr+=1;
750        continue;
[12c35df]751      } else {
[1bdffcb]752        /* otherwise print and continue */
753        buff=owl_malloc(5);
754        buff[0]=ptr[0];
755        buff[1]='\0';
756        owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
757        owl_free(buff);
758        txtptr++;
759        continue;
[12c35df]760      }
761    } else {
762      /* we've found an unattached opener, print everything and move on */
763      buff=owl_malloc(ptr-txtptr+20);
764      strncpy(buff, txtptr, ptr-txtptr+1);
765      buff[ptr-txtptr+1]='\0';
[8fa9562]766      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]767      owl_free(buff);
768      txtptr=ptr+1;
769      continue;
770    }
771  }
772}
[a0a5179]773
774/* requires that the list values are strings or NULL.
775 * joins the elements together with join_with.
776 * If format_fn is specified, passes it the list element value
777 * and it will return a string which this needs to free. */
[77bced3]778void owl_fmtext_append_list(owl_fmtext *f, const owl_list *l, const char *join_with, char *(format_fn)(const char *))
[a0a5179]779{
780  int i, size;
[e19eb97]781  const char *elem;
[a0a5179]782  char *text;
783
784  size = owl_list_get_size(l);
785  for (i=0; i<size; i++) {
[4d86e06]786    elem = owl_list_get_element(l,i);
[a0a5179]787    if (elem && format_fn) {
788      text = format_fn(elem);
789      if (text) {
[1bdffcb]790        owl_fmtext_append_normal(f, text);
791        owl_free(text);
[a0a5179]792      }
793    } else if (elem) {
794      owl_fmtext_append_normal(f, elem);
795    }
796    if ((i < size-1) && join_with) {
797      owl_fmtext_append_normal(f, join_with);
798    }
799  }
800}
801
802/* Free all memory allocated by the object */
803void owl_fmtext_free(owl_fmtext *f)
804{
805  if (f->textbuff) owl_free(f->textbuff);
[8fa9562]806}
807
808/*** Color Pair manager ***/
809void owl_fmtext_init_colorpair_mgr(owl_colorpair_mgr *cpmgr)
810{
[af1920fd]811  /* This could be a bitarray if we wanted to save memory. */
[c2c5c77]812  short i, j;
813  cpmgr->next = 8;
814 
[af1920fd]815  /* The test is <= because we allocate COLORS+1 entries. */
[c2c5c77]816  cpmgr->pairs = owl_malloc((COLORS+1) * sizeof(short*));
817  for(i = 0; i <= COLORS; i++) {
818    cpmgr->pairs[i] = owl_malloc((COLORS+1) * sizeof(short));
819    for(j = 0; j <= COLORS; j++) {
[8fa9562]820      cpmgr->pairs[i][j] = -1;
821    }
822  }
[fa3290d]823  if (owl_global_get_hascolors(&g)) {
824    for(i = 0; i < 8; i++) {
825      short fg, bg;
826      if (i >= COLORS) continue;
827      pair_content(i, &fg, &bg);
828      cpmgr->pairs[fg+1][bg+1] = i;
829    }
[c2c5c77]830  }
[a0a5179]831}
832
[8fa9562]833/* Reset used list */
[c79a047]834void owl_fmtext_reset_colorpairs(void)
[8fa9562]835{
[fa3290d]836  if (owl_global_get_hascolors(&g)) {
837    short i, j;
838    owl_colorpair_mgr *cpmgr = owl_global_get_colorpair_mgr(&g);
839    cpmgr->next = 8;
840   
[af1920fd]841    /* The test is <= because we allocated COLORS+1 entries. */
[fa3290d]842    for(i = 0; i <= COLORS; i++) {
843      for(j = 0; j <= COLORS; j++) {
844        cpmgr->pairs[i][j] = -1;
845      }
846    }
847    for(i = 0; i < 8; i++) {
848      short fg, bg;
849      if (i >= COLORS) continue;
850      pair_content(i, &fg, &bg);
851      cpmgr->pairs[fg+1][bg+1] = i;
[eeeef20]852    }
[c2c5c77]853  }
[8fa9562]854}
855
856/* Assign pairs by request */
[1bdffcb]857short owl_fmtext_get_colorpair(int fg, int bg)
[8fa9562]858{
859  owl_colorpair_mgr *cpmgr;
[801b7ac]860  short pair, default_bg;
[1bdffcb]861
[1b737a1]862  /* Sanity (Bounds) Check */
863  if (fg > COLORS || fg < OWL_COLOR_DEFAULT) fg = OWL_COLOR_DEFAULT;
864  if (bg > COLORS || bg < OWL_COLOR_DEFAULT) bg = OWL_COLOR_DEFAULT;
865           
[1bdffcb]866#ifdef HAVE_USE_DEFAULT_COLORS
[8fa9562]867  if (fg == OWL_COLOR_DEFAULT) fg = -1;
[1bdffcb]868  default_bg = OWL_COLOR_DEFAULT;
869#else
870  if (fg == OWL_COLOR_DEFAULT) fg = 0;
871  if (bg == OWL_COLOR_DEFAULT) bg = 0;
872  default_bg = COLOR_BLACK;
873#endif
874
[af1920fd]875  /* looking for a pair we already set up for this draw. */
[c2c5c77]876  cpmgr = owl_global_get_colorpair_mgr(&g);
877  pair = cpmgr->pairs[fg+1][bg+1];
878  if (!(pair != -1 && pair < cpmgr->next)) {
[af1920fd]879    /* If we didn't find a pair, search for a free one to assign. */
[c2c5c77]880    pair = (cpmgr->next < COLOR_PAIRS) ? cpmgr->next : -1;
881    if (pair != -1) {
[af1920fd]882      /* We found a free pair, initialize it. */
[c2c5c77]883      init_pair(pair, fg, bg);
884      cpmgr->pairs[fg+1][bg+1] = pair;
885      cpmgr->next++;
886    }
887    else if (bg != OWL_COLOR_DEFAULT) {
[af1920fd]888      /* We still don't have a pair, drop the background color. Too bad. */
[c2c5c77]889      owl_function_debugmsg("colorpairs: color shortage - dropping background color.");
890      pair = owl_fmtext_get_colorpair(fg, OWL_COLOR_DEFAULT);
891    }
892    else {
[af1920fd]893      /* We still don't have a pair, defaults all around. */
[c2c5c77]894      owl_function_debugmsg("colorpairs: color shortage - dropping foreground and background color.");
895      pair = 0;
[8fa9562]896    }
897  }
898  return pair;
899}
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