source: fmtext.c @ f9eea4c

barnowl_perlaimdebianrelease-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since f9eea4c was 6d77f1f, checked in by Alejandro R. Sedeño <asedeno@mit.edu>, 13 years ago
removing some debugging code I left in accidentally.
  • Property mode set to 100644
File size: 24.3 KB
RevLine 
[7d4fbcd]1#include "owl.h"
2#include <stdlib.h>
3#include <string.h>
4
[1aee7d9]5static const char fileIdent[] = "$Id$";
6
[b2b0773]7/* initialize an fmtext with no data */
[5789230]8void owl_fmtext_init_null(owl_fmtext *f)
9{
[9866c3a]10  f->textlen = 0;
11  f->bufflen = 5;
12  f->textbuff = owl_malloc(5);
13  f->textbuff[0] = 0;
14  f->default_attrs = OWL_FMTEXT_ATTR_NONE;
15  f->default_fgcolor = OWL_COLOR_DEFAULT;
16  f->default_fgcolor = OWL_COLOR_DEFAULT;
[7d4fbcd]17}
18
[a387d12e]19/* Clear the data from an fmtext, but don't deallocate memory. This
20   fmtext can then be appended to again. */
21void owl_fmtext_clear(owl_fmtext *f)
22{
[9866c3a]23  f->textlen = 0;
24  f->textbuff[0] = 0;
25  f->default_attrs = OWL_FMTEXT_ATTR_NONE;
26  f->default_fgcolor = OWL_COLOR_DEFAULT;
27  f->default_fgcolor = OWL_COLOR_DEFAULT;
[7d4fbcd]28}
29
[a387d12e]30void _owl_fmtext_realloc(owl_fmtext *f, int newlen) /*noproto*/
31{
32    if(newlen + 1 > f->bufflen) {
[9866c3a]33      f->textbuff = owl_realloc(f->textbuff, newlen + 1);
[a387d12e]34      f->bufflen = newlen+1;
35  }
36}
37
[9866c3a]38int _owl_fmtext_is_format_char(gunichar c) /*noproto*/
39{
40  if ((c & ~OWL_FMTEXT_UC_ATTR_MASK) == OWL_FMTEXT_UC_ATTR) return 1;
41  if ((c & ~(OWL_FMTEXT_UC_ALLCOLOR_MASK)) == OWL_FMTEXT_UC_COLOR_BASE) return 1;
42  return 0;
43}
[b2b0773]44/* append text to the end of 'f' with attribute 'attr' and color
45 * 'color'
46 */
[9866c3a]47void owl_fmtext_append_attr(owl_fmtext *f, char *text, char attr, short fgcolor, short bgcolor)
[5789230]48{
[9866c3a]49  char attrbuff[6];
50  int newlen, a = 0, fg = 0, bg = 0;
51 
52  if (attr != OWL_FMTEXT_ATTR_NONE) a=1;
53  if (fgcolor != OWL_COLOR_DEFAULT) fg=1;
54  if (bgcolor != OWL_COLOR_DEFAULT) bg=1;
55
56  /* Plane-16 characters in UTF-8 are 4 bytes long. */
57  newlen = strlen(f->textbuff) + strlen(text) + (8 * (a + fg + bg));
[a387d12e]58  _owl_fmtext_realloc(f, newlen);
[9866c3a]59
60  /* Set attributes */
61  if (a) {
62    memset(attrbuff,0,6);
63    g_unichar_to_utf8(OWL_FMTEXT_UC_ATTR | attr, attrbuff);
64    strcat(f->textbuff, attrbuff);     
65  }
66  if (fg) {
67    memset(attrbuff,0,6);
68    g_unichar_to_utf8(OWL_FMTEXT_UC_FGCOLOR | fgcolor, attrbuff);
69    strcat(f->textbuff, attrbuff);     
70  }
71  if (bg) {
72    memset(attrbuff,0,6);
73    g_unichar_to_utf8(OWL_FMTEXT_UC_BGCOLOR | bgcolor, attrbuff);
74    strcat(f->textbuff, attrbuff);     
75  }
[a387d12e]76 
[7d4fbcd]77  strcat(f->textbuff, text);
[9866c3a]78
79  /* Reset attributes */
80  if (bg) strcat(f->textbuff, OWL_FMTEXT_UTF8_BGDEFAULT);
81  if (fg) strcat(f->textbuff, OWL_FMTEXT_UTF8_FGDEFAULT);
82  if (a)  strcat(f->textbuff, OWL_FMTEXT_UTF8_ATTR_NONE);
[7d4fbcd]83  f->textlen=newlen;
84}
85
[b2b0773]86/* Append normal, uncolored text 'text' to 'f' */
[5789230]87void owl_fmtext_append_normal(owl_fmtext *f, char *text)
88{
[8fa9562]89  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]90}
91
[b2b0773]92/* Append normal text 'text' to 'f' with color 'color' */
[8fa9562]93void owl_fmtext_append_normal_color(owl_fmtext *f, char *text, int fgcolor, int bgcolor)
[5789230]94{
[8fa9562]95  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, fgcolor, bgcolor);
[7d4fbcd]96}
97
[b2b0773]98/* Append bold text 'text' to 'f' */
[5789230]99void owl_fmtext_append_bold(owl_fmtext *f, char *text)
100{
[8fa9562]101  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]102}
103
[b2b0773]104/* Append reverse video text 'text' to 'f' */
[5789230]105void owl_fmtext_append_reverse(owl_fmtext *f, char *text)
106{
[8fa9562]107  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]108}
109
[b2b0773]110/* Append reversed and bold, uncolored text 'text' to 'f' */
[5789230]111void owl_fmtext_append_reversebold(owl_fmtext *f, char *text)
112{
[8fa9562]113  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE | OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
[7d4fbcd]114}
115
[9866c3a]116/* Add the attribute 'attr' to the default atts for the text in 'f' */
117void owl_fmtext_addattr(owl_fmtext *f, char attr)
[5789230]118{
[7d4fbcd]119  /* add the attribute to all text */
[9866c3a]120  f->default_attrs |= attr;
[7d4fbcd]121}
122
[9866c3a]123/* Set the default foreground color for this fmtext to 'color'.
124 * Only affects text that is colored default.
[b2b0773]125 */
[5789230]126void owl_fmtext_colorize(owl_fmtext *f, int color)
127{
[9866c3a]128  f->default_fgcolor = color;
[8fa9562]129}
130
[9866c3a]131/* Set the default foreground color for this fmtext to 'color'.
132 * Only affects text that is colored default.
133 */
[8fa9562]134void owl_fmtext_colorizebg(owl_fmtext *f, int color)
135{
[9866c3a]136  f->default_bgcolor = color;
137}
[7d4fbcd]138
[9866c3a]139/* Internal function. Parse attrbute character. */
140void _owl_fmtext_update_attributes(gunichar c, char *attr, short *fgcolor, short *bgcolor) /*noproto*/
141{
142  if ((c & OWL_FMTEXT_UC_ATTR) == OWL_FMTEXT_UC_ATTR) {
143    *attr = c & OWL_FMTEXT_UC_ATTR_MASK;
144  }
145  else if ((c & OWL_FMTEXT_UC_FGCOLOR) == OWL_FMTEXT_UC_FGCOLOR) {
146    *fgcolor = (c == OWL_FMTEXT_UC_FGDEFAULT
147                ? OWL_COLOR_DEFAULT
148                : c & OWL_FMTEXT_UC_COLOR_MASK);
149  }
150  else if ((c & OWL_FMTEXT_UC_BGCOLOR) == OWL_FMTEXT_UC_BGCOLOR) {
151    *bgcolor = (c == OWL_FMTEXT_UC_BGDEFAULT
152                ? OWL_COLOR_DEFAULT
153                : c & OWL_FMTEXT_UC_COLOR_MASK);
[7d4fbcd]154  }
155}
156
[9866c3a]157/* Internal function. Scan for attribute characters. */
158void _owl_fmtext_scan_attributes(owl_fmtext *f, int start, char *attr, short *fgcolor, short *bgcolor) /*noproto*/
159{
160  char *p;
161  p = strchr(f->textbuff, OWL_FMTEXT_UC_STARTBYTE_UTF8);
162  while (p && p < f->textbuff + start) {
163    _owl_fmtext_update_attributes(g_utf8_get_char(p), attr, fgcolor, bgcolor);
164    p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
165  }
166} 
167
[b2b0773]168/* Internal function.  Append text from 'in' between index 'start' and
169 * 'stop' to the end of 'f'
170 */
[9866c3a]171void _owl_fmtext_append_fmtext(owl_fmtext *f, owl_fmtext *in, int start, int stop) /*noproto*/
172{
173  char attrbuff[6];
174  int newlen, a = 0, fg = 0, bg = 0;
175  char attr = 0;
176  short fgcolor = OWL_COLOR_DEFAULT;
177  short bgcolor = OWL_COLOR_DEFAULT;
178
179  _owl_fmtext_scan_attributes(in, start, &attr, &fgcolor, &bgcolor);
180  if (attr != OWL_FMTEXT_ATTR_NONE) a=1;
181  if (fgcolor != OWL_COLOR_DEFAULT) fg=1;
182  if (bgcolor != OWL_COLOR_DEFAULT) bg=1;
183
184  /* We will reset to defaults after appending the text. We may need
185     to set initial attributes. */
186  newlen=strlen(f->textbuff)+(stop-start+1) + (4 * (a + fg + bg)) + 12;
[a387d12e]187  _owl_fmtext_realloc(f, newlen);
[7d4fbcd]188
[9866c3a]189  if (a) {
190    memset(attrbuff,0,6);
191    g_unichar_to_utf8(OWL_FMTEXT_UC_ATTR | attr, attrbuff);
192    strcat(f->textbuff, attrbuff);     
193  }
194  if (fg) {
195    memset(attrbuff,0,6);
196    g_unichar_to_utf8(OWL_FMTEXT_UC_FGCOLOR | fgcolor, attrbuff);
197    strcat(f->textbuff, attrbuff);     
198  }
199  if (bg) {
200    memset(attrbuff,0,6);
201    g_unichar_to_utf8(OWL_FMTEXT_UC_BGCOLOR | bgcolor, attrbuff);
202    strcat(f->textbuff, attrbuff);     
203  }
204
[7d4fbcd]205  strncat(f->textbuff, in->textbuff+start, stop-start+1);
[9866c3a]206
207  /* Reset attributes */
208  strcat(f->textbuff, OWL_FMTEXT_UTF8_BGDEFAULT);
209  strcat(f->textbuff, OWL_FMTEXT_UTF8_FGDEFAULT);
210  strcat(f->textbuff, OWL_FMTEXT_UTF8_ATTR_NONE);
211
[7d4fbcd]212  f->textbuff[newlen]='\0';
213  f->textlen=newlen;
214}
215
[b2b0773]216/* append fmtext 'in' to 'f' */
[5789230]217void owl_fmtext_append_fmtext(owl_fmtext *f, owl_fmtext *in)
218{
219  _owl_fmtext_append_fmtext(f, in, 0, in->textlen);
220
221}
222
[b2b0773]223/* Append 'nspaces' number of spaces to the end of 'f' */
[5789230]224void owl_fmtext_append_spaces(owl_fmtext *f, int nspaces)
225{
[7d4fbcd]226  int i;
227  for (i=0; i<nspaces; i++) {
228    owl_fmtext_append_normal(f, " ");
229  }
230}
231
[b2b0773]232/* Return a plain version of the fmtext.  Caller is responsible for
233 * freeing the return
234 */
[5789230]235char *owl_fmtext_print_plain(owl_fmtext *f)
236{
[5376a95]237  return owl_strip_format_chars(f->textbuff);
[e1c4636]238}
239
[9866c3a]240void _owl_fmtext_wattrset(WINDOW *w, int attrs) /*noproto*/
241{
242  wattrset(w, A_NORMAL);
243  if (attrs & OWL_FMTEXT_ATTR_BOLD) wattron(w, A_BOLD);
244  if (attrs & OWL_FMTEXT_ATTR_REVERSE) wattron(w, A_REVERSE);
245  if (attrs & OWL_FMTEXT_ATTR_UNDERLINE) wattron(w, A_UNDERLINE);
246}
[b2b0773]247/* add the formatted text to the curses window 'w'.  The window 'w'
248 * must already be initiatlized with curses
249 */
[47519e1b]250void _owl_fmtext_curs_waddstr(owl_fmtext *f, WINDOW *w, int do_search) /*noproto*/
[9866c3a]251{
252  /* char *tmpbuff; */
253  /* int position, trans1, trans2, trans3, len, lastsame; */
254  char *s, *p;
255  char attr;
256  short fg, bg;
257  int search_results, search_len;
258 
[f2f9314]259  if (w==NULL) {
260    owl_function_debugmsg("Hit a null window in owl_fmtext_curs_waddstr.");
261    return;
262  }
263
[9866c3a]264  search_results = (do_search
265                    ? owl_fmtext_search(f, owl_global_get_search_string(&g))
[47519e1b]266                    : 0);
267  search_len = (search_results
268                ? strlen(owl_global_get_search_string(&g))
269                : 0);
[9866c3a]270  s = f->textbuff;
271  /* Set default attributes. */
272  attr = f->default_attrs;
273  fg = f->default_fgcolor;
274  bg = f->default_bgcolor;
275  _owl_fmtext_wattrset(w, attr);
276  if (owl_global_get_hascolors(&g)) {
277    short pair;
278    pair = owl_fmtext_get_colorpair(fg, bg);
279    if (pair != -1) {
280      wcolor_set(w,pair,NULL);
[7d4fbcd]281    }
[9866c3a]282  }
[7d4fbcd]283
[9866c3a]284  /* Find next possible format character. */
285  p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
286  while(p) {
287    if (_owl_fmtext_is_format_char(g_utf8_get_char(p))) {
288      /* Deal with all text from last insert to here. */
289      char tmp;
290   
291      tmp = p[0];
292      p[0] = '\0';
293      if (search_results) {
294        /* Search is active, so highlight search results. */
295        char tmp2, *ss;
296        ss = stristr(s, owl_global_get_search_string(&g));
297        while (ss) {
298          /* Found search string, highlight it. */
299
300          tmp2 = ss[0];
301          ss[0] = '\0';
302          waddstr(w, s);
303          ss[0] = tmp2;
304
[987a93c]305          _owl_fmtext_wattrset(w, attr ^ OWL_FMTEXT_ATTR_REVERSE);
[9866c3a]306
307          tmp2 = ss[search_len];
308          ss[search_len] = '\0';
309          waddstr(w, ss);
310          ss[search_len] = tmp2;
311
312          _owl_fmtext_wattrset(w,attr);
313
314          s = ss + search_len;
315          ss = stristr(s, owl_global_get_search_string(&g));
316        }
317      }
318      /* Deal with remaining part of string. */
319      waddstr(w, s);
320      p[0] = tmp;
321
322      /* Deal with new attributes. Initialize to defaults, then
323         process all consecutive formatting characters. */
324      attr = f->default_attrs;
325      fg = f->default_fgcolor;
326      bg = f->default_bgcolor;
327      while (p && _owl_fmtext_is_format_char(g_utf8_get_char(p))) {
328        _owl_fmtext_update_attributes(g_utf8_get_char(p), &attr, &fg, &bg);
329        p = g_utf8_next_char(p);
[7d4fbcd]330      }
[9866c3a]331      _owl_fmtext_wattrset(w, attr | f->default_attrs);
332      if (owl_global_get_hascolors(&g)) {
333        if (fg == OWL_COLOR_DEFAULT) fg = f->default_fgcolor;
334        if (bg == OWL_COLOR_DEFAULT) bg = f->default_bgcolor;
335        short pair;
336        pair = owl_fmtext_get_colorpair(fg, bg);
337        if (pair != -1) {
338          wcolor_set(w,pair,NULL);
339        }
340      }
341      /* Advance to next non-formatting character. */
342      s = p;
343      p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
344    }
345    else {
346      p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
[7d4fbcd]347    }
348  }
[9866c3a]349  if (s) {
350    waddstr(w, s);
351  }
[7d4fbcd]352}
353
[47519e1b]354void owl_fmtext_curs_waddstr(owl_fmtext *f, WINDOW *w)
355{
356  _owl_fmtext_curs_waddstr(f, w, owl_global_is_search_active(&g));
357}
358
359void owl_fmtext_curs_waddstr_without_search(owl_fmtext *f, WINDOW *w)
360{
361  _owl_fmtext_curs_waddstr(f, w, 0);
362}
[7d4fbcd]363
[b2b0773]364/* start with line 'aline' (where the first line is 0) and print
365 * 'lines' number of lines into 'out'
366 */
[5789230]367int owl_fmtext_truncate_lines(owl_fmtext *in, int aline, int lines, owl_fmtext *out)
368{
[7d4fbcd]369  char *ptr1, *ptr2;
370  int i, offset;
371 
372  /* find the starting line */
[9866c3a]373  ptr1 = in->textbuff;
374  for (i = 0; i < aline; i++) {
375    ptr1 = strchr(ptr1, '\n');
376    if (!ptr1) return(-1);
377    ptr1++;
[7d4fbcd]378  }
[9866c3a]379 
[7d4fbcd]380  /* ptr1 now holds the starting point */
381
382  /* copy in the next 'lines' lines */
[9866c3a]383  if (lines < 1) return(-1);
[7d4fbcd]384
[9866c3a]385  for (i = 0; i < lines; i++) {
386    offset = ptr1 - in->textbuff;
387    ptr2 = strchr(ptr1, '\n');
[7d4fbcd]388    if (!ptr2) {
[9866c3a]389      _owl_fmtext_append_fmtext(out, in, offset, (in->textlen) - 1);
[7d4fbcd]390      return(-1);
391    }
[9866c3a]392    _owl_fmtext_append_fmtext(out, in, offset, (ptr2 - ptr1) + offset);
393    ptr1 = ptr2 + 1;
[7d4fbcd]394  }
395  return(0);
396}
397
[b2b0773]398/* Truncate the message so that each line begins at column 'acol' and
399 * ends at 'bcol' or sooner.  The first column is number 0.  The new
400 * message is placed in 'out'.  The message is * expected to end in a
[3a7cf49]401 * new line for now. NOTE: This needs to be modified to deal with
402 * backing up if we find a SPACING COMBINING MARK at the end of a
403 * line. If that happens, we should back up to the last non-mark
404 * character and stop there.
[b2b0773]405 */
[5789230]406void owl_fmtext_truncate_cols(owl_fmtext *in, int acol, int bcol, owl_fmtext *out)
407{
[28ee32b]408  char *ptr_s, *ptr_e, *ptr_c, *last;
[9866c3a]409  int col, st, padding, chwidth;
[7d4fbcd]410
411  last=in->textbuff+in->textlen-1;
[28ee32b]412  ptr_s=in->textbuff;
[9866c3a]413  while (ptr_s <= last) {
[28ee32b]414    ptr_e=strchr(ptr_s, '\n');
415    if (!ptr_e) {
[7d4fbcd]416      /* but this shouldn't happen if we end in a \n */
417      break;
418    }
419   
[9866c3a]420    if (ptr_e == ptr_s) {
[7d4fbcd]421      owl_fmtext_append_normal(out, "\n");
[9866c3a]422      ++ptr_s;
[7d4fbcd]423      continue;
424    }
425
[28ee32b]426    col = 0;
[9866c3a]427    st = 0;
[dd24b6a]428    padding = 0;
[47519e1b]429    chwidth = 0;
[28ee32b]430    ptr_c = ptr_s;
[3a7cf49]431    while(ptr_c < ptr_e) {
[28ee32b]432      gunichar c = g_utf8_get_char(ptr_c);
[9866c3a]433      if (!_owl_fmtext_is_format_char(c)) {
[47519e1b]434        chwidth = mk_wcwidth(c);
[3a7cf49]435        if (col + chwidth > bcol) break;
436       
[9866c3a]437        if (col >= acol) {
438          if (st == 0) {
439            ptr_s = ptr_c;
440            padding = col - acol;
441            ++st;
442          }
[dd24b6a]443        }
[9866c3a]444        col += chwidth;
445        chwidth = 0;
[28ee32b]446      }
[9866c3a]447      ptr_c = g_utf8_next_char(ptr_c);
[dd24b6a]448    }
[9866c3a]449    if (st) {
450      /* lead padding */
451      owl_fmtext_append_spaces(out, padding);
[3a7cf49]452      if (ptr_c == ptr_e) {
453        /* We made it to the newline. */
454        _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff);
[9866c3a]455      }
456      else {
[3a7cf49]457        if (chwidth > 1) {
458          /* Last char is wide, truncate. */
459          _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff - 1);
460          owl_fmtext_append_normal(out, "\n");
461        }
462        else {
463          /* Last char fits perfectly, leave alone.*/
464          _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff);
465        }
[28ee32b]466      }
[dd24b6a]467    }
468    else {
469      owl_fmtext_append_normal(out, "\n");
[28ee32b]470    }
[9866c3a]471    ptr_s = g_utf8_next_char(ptr_e);
[7d4fbcd]472  }
473}
474
[b2b0773]475/* Return the number of lines in 'f' */
[5789230]476int owl_fmtext_num_lines(owl_fmtext *f)
477{
[7d4fbcd]478  int lines, i;
479
[af2ca19]480  if (f->textlen==0) return(0);
481 
[7d4fbcd]482  lines=0;
[af2ca19]483  for (i=0; i<f->textlen; i++) {
[7d4fbcd]484    if (f->textbuff[i]=='\n') lines++;
485  }
486
487  /* if the last char wasn't a \n there's one more line */
488  if (f->textbuff[i-1]!='\n') lines++;
489
490  return(lines);
491}
492
[5789230]493char *owl_fmtext_get_text(owl_fmtext *f)
494{
[7d4fbcd]495  return(f->textbuff);
496}
497
[a0a5179]498/* set the charater at 'index' to be 'char'.  If index is out of
[9866c3a]499 * bounds don't do anything. If c or char at index is not ASCII, don't
500 * do anything because it's not UTF-8 safe. */
501void owl_fmtext_set_char(owl_fmtext *f, int index, char ch)
[5789230]502{
[4b464a4]503  if ((index < 0) || (index > f->textlen-1)) return;
[9866c3a]504  /* NOT ASCII*/
505  if (f->textbuff[index] & 0x80 || ch & 0x80) return; 
[4b464a4]506  f->textbuff[index]=ch;
507}
508
[b2b0773]509/* Make a copy of the fmtext 'src' into 'dst' */
[5789230]510void owl_fmtext_copy(owl_fmtext *dst, owl_fmtext *src)
511{
[b2b0773]512  int mallocsize;
513
514  if (src->textlen==0) {
515    mallocsize=5;
516  } else {
517    mallocsize=src->textlen+2;
518  }
[7d4fbcd]519  dst->textlen=src->textlen;
[bd3f232]520  dst->textbuff=owl_malloc(mallocsize);
[6bf73ce]521  memcpy(dst->textbuff, src->textbuff, src->textlen+1);
[9866c3a]522  dst->default_attrs = src->default_attrs;
523  dst->default_fgcolor = src->default_fgcolor;
524  dst->default_bgcolor = src->default_bgcolor;
[1fd0b25]525}
526
[b2b0773]527/* return 1 if the string is found, 0 if not.  This is a case
528 *  insensitive search.
[5789230]529 */
530int owl_fmtext_search(owl_fmtext *f, char *string)
531{
[1fd0b25]532  if (stristr(f->textbuff, string)) return(1);
533  return(0);
534}
[12c35df]535
536
537/* Append the text 'text' to 'f' and interpret the zephyr style
538 * formatting syntax to set appropriate attributes.
539 */
540void owl_fmtext_append_ztext(owl_fmtext *f, char *text)
541{
542  int stacksize, curattrs, curcolor;
543  char *ptr, *txtptr, *buff, *tmpptr;
[d754b0a]544  int attrstack[32], chrstack[32], colorstack[32];
[12c35df]545
546  curattrs=OWL_FMTEXT_ATTR_NONE;
547  curcolor=OWL_COLOR_DEFAULT;
548  stacksize=0;
549  txtptr=text;
550  while (1) {
551    ptr=strpbrk(txtptr, "@{[<()>]}");
552    if (!ptr) {
553      /* add all the rest of the text and exit */
[8fa9562]554      owl_fmtext_append_attr(f, txtptr, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]555      return;
556    } else if (ptr[0]=='@') {
557      /* add the text up to this point then deal with the stack */
558      buff=owl_malloc(ptr-txtptr+20);
559      strncpy(buff, txtptr, ptr-txtptr);
560      buff[ptr-txtptr]='\0';
[8fa9562]561      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]562      owl_free(buff);
563
564      /* update pointer to point at the @ */
565      txtptr=ptr;
566
567      /* now the stack */
568
569      /* if we've hit our max stack depth, print the @ and move on */
570      if (stacksize==32) {
[1bdffcb]571        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
572        txtptr++;
573        continue;
[12c35df]574      }
575
576      /* if it's an @@, print an @ and continue */
577      if (txtptr[1]=='@') {
[1bdffcb]578        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
579        txtptr+=2;
580        continue;
[12c35df]581      }
[1bdffcb]582       
[12c35df]583      /* if there's no opener, print the @ and continue */
584      tmpptr=strpbrk(txtptr, "(<[{ ");
585      if (!tmpptr || tmpptr[0]==' ') {
[1bdffcb]586        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
587        txtptr++;
588        continue;
[12c35df]589      }
590
591      /* check what command we've got, push it on the stack, start
[1bdffcb]592         using it, and continue ... unless it's a color command */
[12c35df]593      buff=owl_malloc(tmpptr-ptr+20);
594      strncpy(buff, ptr, tmpptr-ptr);
595      buff[tmpptr-ptr]='\0';
596      if (!strcasecmp(buff, "@bold")) {
[1bdffcb]597        attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
598        chrstack[stacksize]=tmpptr[0];
[d754b0a]599        colorstack[stacksize]=curcolor;
[1bdffcb]600        stacksize++;
601        curattrs|=OWL_FMTEXT_ATTR_BOLD;
602        txtptr+=6;
603        owl_free(buff);
604        continue;
[12c35df]605      } else if (!strcasecmp(buff, "@b")) {
[1bdffcb]606        attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
607        chrstack[stacksize]=tmpptr[0];
[d754b0a]608        colorstack[stacksize]=curcolor;
[1bdffcb]609        stacksize++;
610        curattrs|=OWL_FMTEXT_ATTR_BOLD;
611        txtptr+=3;
612        owl_free(buff);
613        continue;
[12c35df]614      } else if (!strcasecmp(buff, "@i")) {
[1bdffcb]615        attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
616        chrstack[stacksize]=tmpptr[0];
[d754b0a]617        colorstack[stacksize]=curcolor;
[1bdffcb]618        stacksize++;
619        curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
620        txtptr+=3;
621        owl_free(buff);
622        continue;
[12c35df]623      } else if (!strcasecmp(buff, "@italic")) {
[1bdffcb]624        attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
625        chrstack[stacksize]=tmpptr[0];
[d754b0a]626        colorstack[stacksize]=curcolor;
[1bdffcb]627        stacksize++;
628        curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
629        txtptr+=8;
630        owl_free(buff);
631        continue;
[d754b0a]632      } else if (!strcasecmp(buff, "@")) {
633        attrstack[stacksize]=OWL_FMTEXT_ATTR_NONE;
634        chrstack[stacksize]=tmpptr[0];
635        colorstack[stacksize]=curcolor;
636        stacksize++;
637        txtptr+=2;
638        owl_free(buff);
639        continue;
[1bdffcb]640
641        /* if it's a color read the color, set the current color and
[12c35df]642           continue */
643      } else if (!strcasecmp(buff, "@color") 
[1bdffcb]644                 && owl_global_get_hascolors(&g)
645                 && owl_global_is_colorztext(&g)) {
646        owl_free(buff);
647        txtptr+=7;
648        tmpptr=strpbrk(txtptr, "@{[<()>]}");
649        if (tmpptr &&
650            ((txtptr[-1]=='(' && tmpptr[0]==')') ||
651             (txtptr[-1]=='<' && tmpptr[0]=='>') ||
652             (txtptr[-1]=='[' && tmpptr[0]==']') ||
653             (txtptr[-1]=='{' && tmpptr[0]=='}'))) {
654
655          /* grab the color name */
656          buff=owl_malloc(tmpptr-txtptr+20);
657          strncpy(buff, txtptr, tmpptr-txtptr);
658          buff[tmpptr-txtptr]='\0';
659
660          /* set it as the current color */
661          curcolor=owl_util_string_to_color(buff);
662          if (curcolor==-1) curcolor=OWL_COLOR_DEFAULT;
663          owl_free(buff);
664          txtptr=tmpptr+1;
665          continue;
666
667        } else {
668
669        }
[12c35df]670
671      } else {
[1bdffcb]672        /* if we didn't understand it, we'll print it.  This is different from zwgc
673         * but zwgc seems to be smarter about some screw cases than I am
674         */
675        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
676        txtptr++;
677        continue;
[12c35df]678      }
679
680    } else if (ptr[0]=='}' || ptr[0]==']' || ptr[0]==')' || ptr[0]=='>') {
681      /* add the text up to this point first */
682      buff=owl_malloc(ptr-txtptr+20);
683      strncpy(buff, txtptr, ptr-txtptr);
684      buff[ptr-txtptr]='\0';
[8fa9562]685      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]686      owl_free(buff);
687
688      /* now deal with the closer */
689      txtptr=ptr;
690
691      /* first, if the stack is empty we must bail (just print and go) */
692      if (stacksize==0) {
[1bdffcb]693        buff=owl_malloc(5);
694        buff[0]=ptr[0];
695        buff[1]='\0';
696        owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
697        owl_free(buff);
698        txtptr++;
699        continue;
[12c35df]700      }
701
702      /* if the closing char is what's on the stack, turn off the
703         attribue and pop the stack */
704      if ((ptr[0]==')' && chrstack[stacksize-1]=='(') ||
[1bdffcb]705          (ptr[0]=='>' && chrstack[stacksize-1]=='<') ||
706          (ptr[0]==']' && chrstack[stacksize-1]=='[') ||
707          (ptr[0]=='}' && chrstack[stacksize-1]=='{')) {
708        int i;
709        stacksize--;
710        curattrs=OWL_FMTEXT_ATTR_NONE;
[d754b0a]711        curcolor = colorstack[stacksize];
[1bdffcb]712        for (i=0; i<stacksize; i++) {
713          curattrs|=attrstack[i];
714        }
715        txtptr+=1;
716        continue;
[12c35df]717      } else {
[1bdffcb]718        /* otherwise print and continue */
719        buff=owl_malloc(5);
720        buff[0]=ptr[0];
721        buff[1]='\0';
722        owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
723        owl_free(buff);
724        txtptr++;
725        continue;
[12c35df]726      }
727    } else {
728      /* we've found an unattached opener, print everything and move on */
729      buff=owl_malloc(ptr-txtptr+20);
730      strncpy(buff, txtptr, ptr-txtptr+1);
731      buff[ptr-txtptr+1]='\0';
[8fa9562]732      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
[12c35df]733      owl_free(buff);
734      txtptr=ptr+1;
735      continue;
736    }
737  }
738}
[a0a5179]739
740/* requires that the list values are strings or NULL.
741 * joins the elements together with join_with.
742 * If format_fn is specified, passes it the list element value
743 * and it will return a string which this needs to free. */
744void owl_fmtext_append_list(owl_fmtext *f, owl_list *l, char *join_with, char *(format_fn)(void*))
745{
746  int i, size;
747  void *elem;
748  char *text;
749
750  size = owl_list_get_size(l);
751  for (i=0; i<size; i++) {
752    elem = (char*)owl_list_get_element(l,i);
753    if (elem && format_fn) {
754      text = format_fn(elem);
755      if (text) {
[1bdffcb]756        owl_fmtext_append_normal(f, text);
757        owl_free(text);
[a0a5179]758      }
759    } else if (elem) {
760      owl_fmtext_append_normal(f, elem);
761    }
762    if ((i < size-1) && join_with) {
763      owl_fmtext_append_normal(f, join_with);
764    }
765  }
766}
767
768/* Free all memory allocated by the object */
769void owl_fmtext_free(owl_fmtext *f)
770{
771  if (f->textbuff) owl_free(f->textbuff);
[8fa9562]772}
773
774/*** Color Pair manager ***/
775void owl_fmtext_init_colorpair_mgr(owl_colorpair_mgr *cpmgr)
776{
777  // This could be a bitarray if we wanted to save memory.
[c2c5c77]778  short i, j;
779  cpmgr->next = 8;
780 
781  // The test is <= because we allocate COLORS+1 entries.
782  cpmgr->pairs = owl_malloc((COLORS+1) * sizeof(short*));
783  for(i = 0; i <= COLORS; i++) {
784    cpmgr->pairs[i] = owl_malloc((COLORS+1) * sizeof(short));
785    for(j = 0; j <= COLORS; j++) {
[8fa9562]786      cpmgr->pairs[i][j] = -1;
787    }
788  }
[fa3290d]789  if (owl_global_get_hascolors(&g)) {
790    for(i = 0; i < 8; i++) {
791      short fg, bg;
792      if (i >= COLORS) continue;
793      pair_content(i, &fg, &bg);
794      cpmgr->pairs[fg+1][bg+1] = i;
795    }
[c2c5c77]796  }
[a0a5179]797}
798
[8fa9562]799/* Reset used list */
800void owl_fmtext_reset_colorpairs()
801{
[fa3290d]802  if (owl_global_get_hascolors(&g)) {
803    short i, j;
804    owl_colorpair_mgr *cpmgr = owl_global_get_colorpair_mgr(&g);
805    cpmgr->next = 8;
806   
807    // The test is <= because we allocated COLORS+1 entries.
808    for(i = 0; i <= COLORS; i++) {
809      for(j = 0; j <= COLORS; j++) {
810        cpmgr->pairs[i][j] = -1;
811      }
812    }
813    for(i = 0; i < 8; i++) {
814      short fg, bg;
815      if (i >= COLORS) continue;
816      pair_content(i, &fg, &bg);
817      cpmgr->pairs[fg+1][bg+1] = i;
[eeeef20]818    }
[c2c5c77]819  }
[8fa9562]820}
821
822/* Assign pairs by request */
[1bdffcb]823short owl_fmtext_get_colorpair(int fg, int bg)
[8fa9562]824{
825  owl_colorpair_mgr *cpmgr;
[801b7ac]826  short pair, default_bg;
[1bdffcb]827
828#ifdef HAVE_USE_DEFAULT_COLORS
[8fa9562]829  if (fg == OWL_COLOR_DEFAULT) fg = -1;
[1bdffcb]830  default_bg = OWL_COLOR_DEFAULT;
831#else
832  if (fg == OWL_COLOR_DEFAULT) fg = 0;
833  if (bg == OWL_COLOR_DEFAULT) bg = 0;
834  default_bg = COLOR_BLACK;
835#endif
836
[c2c5c77]837  // looking for a pair we already set up for this draw.
838  cpmgr = owl_global_get_colorpair_mgr(&g);
839  pair = cpmgr->pairs[fg+1][bg+1];
840  if (!(pair != -1 && pair < cpmgr->next)) {
841/*    owl_global_set_needrefresh(&g);*/
842    // If we didn't find a pair, search for a free one to assign.
843    pair = (cpmgr->next < COLOR_PAIRS) ? cpmgr->next : -1;
844    if (pair != -1) {
845      // We found a free pair, initialize it.
846      init_pair(pair, fg, bg);
847      cpmgr->pairs[fg+1][bg+1] = pair;
848      cpmgr->next++;
849    }
850    else if (bg != OWL_COLOR_DEFAULT) {
851      // We still don't have a pair, drop the background color. Too bad.
852      owl_function_debugmsg("colorpairs: color shortage - dropping background color.");
853      pair = owl_fmtext_get_colorpair(fg, OWL_COLOR_DEFAULT);
854    }
855    else {
856      // We still don't have a pair, defaults all around.
857      owl_function_debugmsg("colorpairs: color shortage - dropping foreground and background color.");
858      pair = 0;
[8fa9562]859    }
860  }
861  return pair;
862}
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