source: fmtext.c @ e0e0e5a

release-1.7release-1.8release-1.9
Last change on this file since e0e0e5a was e0e0e5a, checked in by David Benjamin <davidben@mit.edu>, 11 years ago
Make _owl_fmtext_append_fmtext take a half-open range Inclusive on both endpoints is weird. This also makes the usage in owl_fmtext_append_fmtext correct. It otherwise appends an extra '\0', causing textlen to be off. This fixes a failure in the owl_fmtext test.
  • Property mode set to 100644
File size: 25.8 KB
Line 
1#include "owl.h"
2#include <stdlib.h>
3#include <string.h>
4
5/* initialize an fmtext with no data */
6void owl_fmtext_init_null(owl_fmtext *f)
7{
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;
14  f->default_bgcolor = OWL_COLOR_DEFAULT;
15}
16
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{
21  f->textlen = 0;
22  f->textbuff[0] = 0;
23  f->default_attrs = OWL_FMTEXT_ATTR_NONE;
24  f->default_fgcolor = OWL_COLOR_DEFAULT;
25  f->default_bgcolor = OWL_COLOR_DEFAULT;
26}
27
28static void _owl_fmtext_realloc(owl_fmtext *f, int newlen)
29{
30    if(newlen + 1 > f->bufflen) {
31      f->textbuff = owl_realloc(f->textbuff, newlen + 1);
32      f->bufflen = newlen+1;
33  }
34}
35
36int owl_fmtext_is_format_char(gunichar c)
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}
42/* append text to the end of 'f' with attribute 'attr' and color
43 * 'color'
44 */
45void owl_fmtext_append_attr(owl_fmtext *f, const char *text, char attr, short fgcolor, short bgcolor)
46{
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));
56  _owl_fmtext_realloc(f, newlen);
57
58  /* Set attributes */
59  if (a)
60    strncat(f->textbuff, attrbuff,
61            g_unichar_to_utf8(OWL_FMTEXT_UC_ATTR | attr, attrbuff));
62  if (fg)
63    strncat(f->textbuff, attrbuff,
64            g_unichar_to_utf8(OWL_FMTEXT_UC_FGCOLOR | fgcolor, attrbuff));
65  if (bg)
66    strncat(f->textbuff, attrbuff,
67            g_unichar_to_utf8(OWL_FMTEXT_UC_BGCOLOR | bgcolor, attrbuff));
68 
69  strcat(f->textbuff, text);
70
71  /* Reset attributes */
72  if (bg) strcat(f->textbuff, OWL_FMTEXT_UTF8_BGDEFAULT);
73  if (fg) strcat(f->textbuff, OWL_FMTEXT_UTF8_FGDEFAULT);
74  if (a)  strcat(f->textbuff, OWL_FMTEXT_UTF8_ATTR_NONE);
75  f->textlen=newlen;
76}
77
78/* Append normal, uncolored text 'text' to 'f' */
79void owl_fmtext_append_normal(owl_fmtext *f, const char *text)
80{
81  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
82}
83
84/* Append normal, uncolored text specified by format string to 'f' */
85void owl_fmtext_appendf_normal(owl_fmtext *f, const char *fmt, ...)
86{
87  va_list ap;
88  char *buff;
89
90  va_start(ap, fmt);
91  buff = g_strdup_vprintf(fmt, ap);
92  va_end(ap);
93  if (!buff)
94    return;
95  owl_fmtext_append_attr(f, buff, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
96  owl_free(buff);
97}
98
99/* Append normal text 'text' to 'f' with color 'color' */
100void owl_fmtext_append_normal_color(owl_fmtext *f, const char *text, int fgcolor, int bgcolor)
101{
102  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, fgcolor, bgcolor);
103}
104
105/* Append bold text 'text' to 'f' */
106void owl_fmtext_append_bold(owl_fmtext *f, const char *text)
107{
108  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
109}
110
111/* Append reverse video text 'text' to 'f' */
112void owl_fmtext_append_reverse(owl_fmtext *f, const char *text)
113{
114  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
115}
116
117/* Append reversed and bold, uncolored text 'text' to 'f' */
118void owl_fmtext_append_reversebold(owl_fmtext *f, const char *text)
119{
120  owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE | OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT);
121}
122
123/* Add the attribute 'attr' to the default atts for the text in 'f' */
124void owl_fmtext_addattr(owl_fmtext *f, char attr)
125{
126  /* add the attribute to all text */
127  f->default_attrs |= attr;
128}
129
130/* Set the default foreground color for this fmtext to 'color'.
131 * Only affects text that is colored default.
132 */
133void owl_fmtext_colorize(owl_fmtext *f, int color)
134{
135  f->default_fgcolor = color;
136}
137
138/* Set the default foreground color for this fmtext to 'color'.
139 * Only affects text that is colored default.
140 */
141void owl_fmtext_colorizebg(owl_fmtext *f, int color)
142{
143  f->default_bgcolor = color;
144}
145
146/* Internal function. Parse attrbute character. */
147static void _owl_fmtext_update_attributes(gunichar c, char *attr, short *fgcolor, short *bgcolor)
148{
149  if ((c & OWL_FMTEXT_UC_ATTR) == OWL_FMTEXT_UC_ATTR) {
150    *attr = c & OWL_FMTEXT_UC_ATTR_MASK;
151  }
152  else if ((c & OWL_FMTEXT_UC_COLOR_BASE) == OWL_FMTEXT_UC_COLOR_BASE) {
153    if ((c & OWL_FMTEXT_UC_BGCOLOR) == OWL_FMTEXT_UC_BGCOLOR) {
154      *bgcolor = (c == OWL_FMTEXT_UC_BGDEFAULT
155                  ? OWL_COLOR_DEFAULT
156                  : c & OWL_FMTEXT_UC_COLOR_MASK);
157    }
158    else if ((c & OWL_FMTEXT_UC_FGCOLOR) == OWL_FMTEXT_UC_FGCOLOR) {
159      *fgcolor = (c == OWL_FMTEXT_UC_FGDEFAULT
160                  ? OWL_COLOR_DEFAULT
161                  : c & OWL_FMTEXT_UC_COLOR_MASK);
162    }
163  }
164}
165
166/* Internal function. Scan for attribute characters. */
167static void _owl_fmtext_scan_attributes(const owl_fmtext *f, int start, char *attr, short *fgcolor, short *bgcolor)
168{
169  const char *p;
170  p = strchr(f->textbuff, OWL_FMTEXT_UC_STARTBYTE_UTF8);
171  while (p && p < f->textbuff + start) {
172    _owl_fmtext_update_attributes(g_utf8_get_char(p), attr, fgcolor, bgcolor);
173    p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
174  }
175} 
176
177/* Internal function.  Append text from 'in' between index 'start'
178 * inclusive and 'stop' exclusive, to the end of 'f'. This function
179 * works with bytes.
180 */
181static void _owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in, int start, int stop)
182{
183  char attrbuff[6];
184  int newlen, a = 0, fg = 0, bg = 0;
185  char attr = 0;
186  short fgcolor = OWL_COLOR_DEFAULT;
187  short bgcolor = OWL_COLOR_DEFAULT;
188
189  _owl_fmtext_scan_attributes(in, start, &attr, &fgcolor, &bgcolor);
190  if (attr != OWL_FMTEXT_ATTR_NONE) a=1;
191  if (fgcolor != OWL_COLOR_DEFAULT) fg=1;
192  if (bgcolor != OWL_COLOR_DEFAULT) bg=1;
193
194  /* We will reset to defaults after appending the text. We may need
195     to set initial attributes. */
196  newlen=strlen(f->textbuff)+(stop-start) + (4 * (a + fg + bg)) + 12;
197  _owl_fmtext_realloc(f, newlen);
198
199  if (a)
200    strncat(f->textbuff, attrbuff,
201            g_unichar_to_utf8(OWL_FMTEXT_UC_ATTR | attr, attrbuff));
202  if (fg)
203    strncat(f->textbuff, attrbuff,
204            g_unichar_to_utf8(OWL_FMTEXT_UC_FGCOLOR | fgcolor, attrbuff));
205  if (bg)
206    strncat(f->textbuff, attrbuff,
207            g_unichar_to_utf8(OWL_FMTEXT_UC_BGCOLOR | bgcolor, attrbuff));
208
209  strncat(f->textbuff, in->textbuff+start, stop-start);
210
211  /* Reset attributes */
212  strcat(f->textbuff, OWL_FMTEXT_UTF8_BGDEFAULT);
213  strcat(f->textbuff, OWL_FMTEXT_UTF8_FGDEFAULT);
214  strcat(f->textbuff, OWL_FMTEXT_UTF8_ATTR_NONE);
215
216  f->textbuff[newlen]='\0';
217  f->textlen=newlen;
218}
219
220/* append fmtext 'in' to 'f' */
221void owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in)
222{
223  _owl_fmtext_append_fmtext(f, in, 0, in->textlen);
224
225}
226
227/* Append 'nspaces' number of spaces to the end of 'f' */
228void owl_fmtext_append_spaces(owl_fmtext *f, int nspaces)
229{
230  int i;
231  for (i=0; i<nspaces; i++) {
232    owl_fmtext_append_normal(f, " ");
233  }
234}
235
236/* Return a plain version of the fmtext.  Caller is responsible for
237 * freeing the return
238 */
239char *owl_fmtext_print_plain(const owl_fmtext *f)
240{
241  return owl_strip_format_chars(f->textbuff);
242}
243
244static void _owl_fmtext_wattrset(WINDOW *w, int attrs)
245{
246  wattrset(w, A_NORMAL);
247  if (attrs & OWL_FMTEXT_ATTR_BOLD) wattron(w, A_BOLD);
248  if (attrs & OWL_FMTEXT_ATTR_REVERSE) wattron(w, A_REVERSE);
249  if (attrs & OWL_FMTEXT_ATTR_UNDERLINE) wattron(w, A_UNDERLINE);
250}
251
252static void _owl_fmtext_update_colorpair(short fg, short bg, short *pair)
253{
254  if (owl_global_get_hascolors(&g)) {
255    *pair = owl_fmtext_get_colorpair(fg, bg);
256  }
257}
258
259static void _owl_fmtext_wcolor_set(WINDOW *w, short pair)
260{
261  if (owl_global_get_hascolors(&g)) {
262      wcolor_set(w,pair,NULL);
263      wbkgdset(w, COLOR_PAIR(pair));
264  }
265}
266
267/* add the formatted text to the curses window 'w'.  The window 'w'
268 * must already be initiatlized with curses
269 */
270static void _owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w, int do_search)
271{
272  /* char *tmpbuff; */
273  /* int position, trans1, trans2, trans3, len, lastsame; */
274  char *s, *p;
275  char attr;
276  short fg, bg, pair = 0;
277 
278  if (w==NULL) {
279    owl_function_debugmsg("Hit a null window in owl_fmtext_curs_waddstr.");
280    return;
281  }
282
283  s = f->textbuff;
284  /* Set default attributes. */
285  attr = f->default_attrs;
286  fg = f->default_fgcolor;
287  bg = f->default_bgcolor;
288  _owl_fmtext_wattrset(w, attr);
289  _owl_fmtext_update_colorpair(fg, bg, &pair);
290  _owl_fmtext_wcolor_set(w, pair);
291
292  /* Find next possible format character. */
293  p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
294  while(p) {
295    if (owl_fmtext_is_format_char(g_utf8_get_char(p))) {
296      /* Deal with all text from last insert to here. */
297      char tmp;
298   
299      tmp = p[0];
300      p[0] = '\0';
301      if (owl_global_is_search_active(&g)) {
302        /* Search is active, so highlight search results. */
303        char tmp2;
304        int start, end;
305        while (owl_regex_compare(owl_global_get_search_re(&g), s, &start, &end) == 0) {
306          /* Prevent an infinite loop matching the empty string. */
307          if (end == 0)
308            break;
309
310          /* Found search string, highlight it. */
311
312          tmp2 = s[start];
313          s[start] = '\0';
314          waddstr(w, s);
315          s[start] = tmp2;
316
317          _owl_fmtext_wattrset(w, attr ^ OWL_FMTEXT_ATTR_REVERSE);
318          _owl_fmtext_wcolor_set(w, pair);
319         
320          tmp2 = s[end];
321          s[end] = '\0';
322          waddstr(w, s + start);
323          s[end] = tmp2;
324
325          _owl_fmtext_wattrset(w, attr);
326          _owl_fmtext_wcolor_set(w, pair);
327
328          s += end;
329        }
330      }
331      /* Deal with remaining part of string. */
332      waddstr(w, s);
333      p[0] = tmp;
334
335      /* Deal with new attributes. Initialize to defaults, then
336         process all consecutive formatting characters. */
337      attr = f->default_attrs;
338      fg = f->default_fgcolor;
339      bg = f->default_bgcolor;
340      while (owl_fmtext_is_format_char(g_utf8_get_char(p))) {
341        _owl_fmtext_update_attributes(g_utf8_get_char(p), &attr, &fg, &bg);
342        p = g_utf8_next_char(p);
343      }
344      _owl_fmtext_wattrset(w, attr | f->default_attrs);
345      if (fg == OWL_COLOR_DEFAULT) fg = f->default_fgcolor;
346      if (bg == OWL_COLOR_DEFAULT) bg = f->default_bgcolor;
347      _owl_fmtext_update_colorpair(fg, bg, &pair);
348      _owl_fmtext_wcolor_set(w, pair);
349
350      /* Advance to next non-formatting character. */
351      s = p;
352      p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8);
353    }
354    else {
355      p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8);
356    }
357  }
358  if (s) {
359    waddstr(w, s);
360  }
361  wbkgdset(w, 0);
362}
363
364void owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w)
365{
366  _owl_fmtext_curs_waddstr(f, w, owl_global_is_search_active(&g));
367}
368
369void owl_fmtext_curs_waddstr_without_search(const owl_fmtext *f, WINDOW *w)
370{
371  _owl_fmtext_curs_waddstr(f, w, 0);
372}
373
374/* start with line 'aline' (where the first line is 0) and print
375 * 'lines' number of lines into 'out'
376 */
377int owl_fmtext_truncate_lines(const owl_fmtext *in, int aline, int lines, owl_fmtext *out)
378{
379  const char *ptr1, *ptr2;
380  int i, offset;
381 
382  /* find the starting line */
383  ptr1 = in->textbuff;
384  for (i = 0; i < aline; i++) {
385    ptr1 = strchr(ptr1, '\n');
386    if (!ptr1) return(-1);
387    ptr1++;
388  }
389 
390  /* ptr1 now holds the starting point */
391
392  /* copy the default attributes */
393  out->default_attrs = in->default_attrs;
394  out->default_fgcolor = in->default_fgcolor;
395  out->default_bgcolor = in->default_bgcolor;
396   
397  /* copy in the next 'lines' lines */
398  if (lines < 1) return(-1);
399
400  for (i = 0; i < lines; i++) {
401    offset = ptr1 - in->textbuff;
402    ptr2 = strchr(ptr1, '\n');
403    if (!ptr2) {
404      /* Copy to the end of the buffer. */
405      _owl_fmtext_append_fmtext(out, in, offset, in->textlen);
406      return(-1);
407    }
408    /* Copy up to, and including, the new line. */
409    _owl_fmtext_append_fmtext(out, in, offset, (ptr2 - ptr1) + offset + 1);
410    ptr1 = ptr2 + 1;
411  }
412  return(0);
413}
414
415/* Truncate the message so that each line begins at column 'acol' and
416 * ends at 'bcol' or sooner.  The first column is number 0.  The new
417 * message is placed in 'out'.  The message is expected to end in a
418 * new line for now.
419 *
420 * NOTE: This needs to be modified to deal with backing up if we find
421 * a SPACING COMBINING MARK at the end of a line. If that happens, we
422 * should back up to the last non-mark character and stop there.
423 *
424 * NOTE: If a line ends at bcol, we omit the newline. This is so printing
425 * to ncurses works.
426 */
427void owl_fmtext_truncate_cols(const owl_fmtext *in, int acol, int bcol, owl_fmtext *out)
428{
429  const char *ptr_s, *ptr_e, *ptr_c, *last;
430  int col, st, padding, chwidth;
431
432  /* copy the default attributes */
433  out->default_attrs = in->default_attrs;
434  out->default_fgcolor = in->default_fgcolor;
435  out->default_bgcolor = in->default_bgcolor;
436
437  last=in->textbuff+in->textlen-1;
438  ptr_s=in->textbuff;
439  while (ptr_s <= last) {
440    ptr_e=strchr(ptr_s, '\n');
441    if (!ptr_e) {
442      /* but this shouldn't happen if we end in a \n */
443      break;
444    }
445   
446    if (ptr_e == ptr_s) {
447      owl_fmtext_append_normal(out, "\n");
448      ++ptr_s;
449      continue;
450    }
451
452    col = 0;
453    st = 0;
454    padding = 0;
455    chwidth = 0;
456    ptr_c = ptr_s;
457    while(ptr_c < ptr_e) {
458      gunichar c = g_utf8_get_char(ptr_c);
459      if (!owl_fmtext_is_format_char(c)) {
460        chwidth = mk_wcwidth(c);
461        if (col + chwidth > bcol) break;
462       
463        if (col >= acol) {
464          if (st == 0) {
465            ptr_s = ptr_c;
466            padding = col - acol;
467            ++st;
468          }
469        }
470        col += chwidth;
471        chwidth = 0;
472      }
473      ptr_c = g_utf8_next_char(ptr_c);
474    }
475    if (st) {
476      /* lead padding */
477      owl_fmtext_append_spaces(out, padding);
478      if (ptr_c == ptr_e) {
479        /* We made it to the newline. Append up to, and including it. */
480        _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff + 1);
481      }
482      else if (chwidth > 1) {
483        /* Last char is wide, truncate. */
484        _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff);
485        owl_fmtext_append_normal(out, "\n");
486      }
487      else {
488        /* Last char fits perfectly, We stop at the next char to make
489         * sure we get it all. */
490        ptr_c = g_utf8_next_char(ptr_c);
491        _owl_fmtext_append_fmtext(out, in, ptr_s - in->textbuff, ptr_c - in->textbuff);
492      }
493    }
494    else {
495      owl_fmtext_append_normal(out, "\n");
496    }
497    ptr_s = g_utf8_next_char(ptr_e);
498  }
499}
500
501/* Return the number of lines in 'f' */
502int owl_fmtext_num_lines(const owl_fmtext *f)
503{
504  int lines, i;
505
506  if (f->textlen==0) return(0);
507 
508  lines=0;
509  for (i=0; i<f->textlen; i++) {
510    if (f->textbuff[i]=='\n') lines++;
511  }
512
513  /* if the last char wasn't a \n there's one more line */
514  if (f->textbuff[i-1]!='\n') lines++;
515
516  return(lines);
517}
518
519const char *owl_fmtext_get_text(const owl_fmtext *f)
520{
521  return(f->textbuff);
522}
523
524int owl_fmtext_num_bytes(const owl_fmtext *f)
525{
526  return(f->textlen);
527}
528
529/* set the charater at 'index' to be 'char'.  If index is out of
530 * bounds don't do anything. If c or char at index is not ASCII, don't
531 * do anything because it's not UTF-8 safe. */
532void owl_fmtext_set_char(owl_fmtext *f, int index, char ch)
533{
534  if ((index < 0) || (index > f->textlen-1)) return;
535  /* NOT ASCII*/
536  if (f->textbuff[index] & 0x80 || ch & 0x80) return; 
537  f->textbuff[index]=ch;
538}
539
540/* Make a copy of the fmtext 'src' into 'dst' */
541void owl_fmtext_copy(owl_fmtext *dst, const owl_fmtext *src)
542{
543  int mallocsize;
544
545  if (src->textlen==0) {
546    mallocsize=5;
547  } else {
548    mallocsize=src->textlen+2;
549  }
550  dst->textlen=src->textlen;
551  dst->bufflen=mallocsize;
552  dst->textbuff=owl_malloc(mallocsize);
553  memcpy(dst->textbuff, src->textbuff, src->textlen+1);
554  dst->default_attrs = src->default_attrs;
555  dst->default_fgcolor = src->default_fgcolor;
556  dst->default_bgcolor = src->default_bgcolor;
557}
558
559/* return 1 if the string is found, 0 if not.  This is a case
560 *  insensitive search.
561 */
562int owl_fmtext_search(const owl_fmtext *f, const owl_regex *re)
563{
564  if (owl_regex_compare(re, f->textbuff, NULL, NULL) == 0) return(1);
565  return(0);
566}
567
568
569/* Append the text 'text' to 'f' and interpret the zephyr style
570 * formatting syntax to set appropriate attributes.
571 */
572void owl_fmtext_append_ztext(owl_fmtext *f, const char *text)
573{
574  int stacksize, curattrs, curcolor;
575  const char *ptr, *txtptr, *tmpptr;
576  char *buff;
577  int attrstack[32], chrstack[32], colorstack[32];
578
579  curattrs=OWL_FMTEXT_ATTR_NONE;
580  curcolor=OWL_COLOR_DEFAULT;
581  stacksize=0;
582  txtptr=text;
583  while (1) {
584    ptr=strpbrk(txtptr, "@{[<()>]}");
585    if (!ptr) {
586      /* add all the rest of the text and exit */
587      owl_fmtext_append_attr(f, txtptr, curattrs, curcolor, OWL_COLOR_DEFAULT);
588      return;
589    } else if (ptr[0]=='@') {
590      /* add the text up to this point then deal with the stack */
591      buff=owl_malloc(ptr-txtptr+20);
592      strncpy(buff, txtptr, ptr-txtptr);
593      buff[ptr-txtptr]='\0';
594      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
595      owl_free(buff);
596
597      /* update pointer to point at the @ */
598      txtptr=ptr;
599
600      /* now the stack */
601
602      /* if we've hit our max stack depth, print the @ and move on */
603      if (stacksize==32) {
604        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
605        txtptr++;
606        continue;
607      }
608
609      /* if it's an @@, print an @ and continue */
610      if (txtptr[1]=='@') {
611        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
612        txtptr+=2;
613        continue;
614      }
615       
616      /* if there's no opener, print the @ and continue */
617      tmpptr=strpbrk(txtptr, "(<[{ ");
618      if (!tmpptr || tmpptr[0]==' ') {
619        owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT);
620        txtptr++;
621        continue;
622      }
623
624      /* check what command we've got, push it on the stack, start
625         using it, and continue ... unless it's a color command */
626      buff=owl_malloc(tmpptr-ptr+20);
627      strncpy(buff, ptr, tmpptr-ptr);
628      buff[tmpptr-ptr]='\0';
629      if (!strcasecmp(buff, "@bold")) {
630        attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
631        chrstack[stacksize]=tmpptr[0];
632        colorstack[stacksize]=curcolor;
633        stacksize++;
634        curattrs|=OWL_FMTEXT_ATTR_BOLD;
635        txtptr+=6;
636        owl_free(buff);
637        continue;
638      } else if (!strcasecmp(buff, "@b")) {
639        attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD;
640        chrstack[stacksize]=tmpptr[0];
641        colorstack[stacksize]=curcolor;
642        stacksize++;
643        curattrs|=OWL_FMTEXT_ATTR_BOLD;
644        txtptr+=3;
645        owl_free(buff);
646        continue;
647      } else if (!strcasecmp(buff, "@i")) {
648        attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
649        chrstack[stacksize]=tmpptr[0];
650        colorstack[stacksize]=curcolor;
651        stacksize++;
652        curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
653        txtptr+=3;
654        owl_free(buff);
655        continue;
656      } else if (!strcasecmp(buff, "@italic")) {
657        attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE;
658        chrstack[stacksize]=tmpptr[0];
659        colorstack[stacksize]=curcolor;
660        stacksize++;
661        curattrs|=OWL_FMTEXT_ATTR_UNDERLINE;
662        txtptr+=8;
663        owl_free(buff);
664        continue;
665      } else if (!strcasecmp(buff, "@")) {
666        attrstack[stacksize]=OWL_FMTEXT_ATTR_NONE;
667        chrstack[stacksize]=tmpptr[0];
668        colorstack[stacksize]=curcolor;
669        stacksize++;
670        txtptr+=2;
671        owl_free(buff);
672        continue;
673
674        /* if it's a color read the color, set the current color and
675           continue */
676      } else if (!strcasecmp(buff, "@color") 
677                 && owl_global_get_hascolors(&g)
678                 && owl_global_is_colorztext(&g)) {
679        owl_free(buff);
680        txtptr+=7;
681        tmpptr=strpbrk(txtptr, "@{[<()>]}");
682        if (tmpptr &&
683            ((txtptr[-1]=='(' && tmpptr[0]==')') ||
684             (txtptr[-1]=='<' && tmpptr[0]=='>') ||
685             (txtptr[-1]=='[' && tmpptr[0]==']') ||
686             (txtptr[-1]=='{' && tmpptr[0]=='}'))) {
687
688          /* grab the color name */
689          buff=owl_malloc(tmpptr-txtptr+20);
690          strncpy(buff, txtptr, tmpptr-txtptr);
691          buff[tmpptr-txtptr]='\0';
692
693          /* set it as the current color */
694          curcolor=owl_util_string_to_color(buff);
695          if (curcolor == OWL_COLOR_INVALID)
696              curcolor = OWL_COLOR_DEFAULT;
697          owl_free(buff);
698          txtptr=tmpptr+1;
699          continue;
700
701        } else {
702
703        }
704
705      } else {
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;
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';
719      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
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) {
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;
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]=='(') ||
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;
745        curcolor = colorstack[stacksize];
746        for (i=0; i<stacksize; i++) {
747          curattrs|=attrstack[i];
748        }
749        txtptr+=1;
750        continue;
751      } else {
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;
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';
766      owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT);
767      owl_free(buff);
768      txtptr=ptr+1;
769      continue;
770    }
771  }
772}
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. */
778void owl_fmtext_append_list(owl_fmtext *f, const owl_list *l, const char *join_with, char *(format_fn)(const char *))
779{
780  int i, size;
781  const char *elem;
782  char *text;
783
784  size = owl_list_get_size(l);
785  for (i=0; i<size; i++) {
786    elem = owl_list_get_element(l,i);
787    if (elem && format_fn) {
788      text = format_fn(elem);
789      if (text) {
790        owl_fmtext_append_normal(f, text);
791        owl_free(text);
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_cleanup(owl_fmtext *f)
804{
805  if (f->textbuff) owl_free(f->textbuff);
806}
807
808/*** Color Pair manager ***/
809void owl_fmtext_init_colorpair_mgr(owl_colorpair_mgr *cpmgr)
810{
811  /* This could be a bitarray if we wanted to save memory. */
812  short i, j;
813  cpmgr->next = 8;
814 
815  /* The test is <= because we allocate COLORS+1 entries. */
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++) {
820      cpmgr->pairs[i][j] = -1;
821    }
822  }
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    }
830  }
831}
832
833/* Reset used list */
834void owl_fmtext_reset_colorpairs(void)
835{
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   
841    /* The test is <= because we allocated COLORS+1 entries. */
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;
852    }
853  }
854}
855
856/* Assign pairs by request */
857short owl_fmtext_get_colorpair(int fg, int bg)
858{
859  owl_colorpair_mgr *cpmgr;
860  short pair;
861
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           
866#ifdef HAVE_USE_DEFAULT_COLORS
867  if (fg == OWL_COLOR_DEFAULT) fg = -1;
868#else
869  if (fg == OWL_COLOR_DEFAULT) fg = 0;
870  if (bg == OWL_COLOR_DEFAULT) bg = 0;
871#endif
872
873  /* looking for a pair we already set up for this draw. */
874  cpmgr = owl_global_get_colorpair_mgr(&g);
875  pair = cpmgr->pairs[fg+1][bg+1];
876  if (!(pair != -1 && pair < cpmgr->next)) {
877    /* If we didn't find a pair, search for a free one to assign. */
878    pair = (cpmgr->next < COLOR_PAIRS) ? cpmgr->next : -1;
879    if (pair != -1) {
880      /* We found a free pair, initialize it. */
881      init_pair(pair, fg, bg);
882      cpmgr->pairs[fg+1][bg+1] = pair;
883      cpmgr->next++;
884    }
885    else if (bg != OWL_COLOR_DEFAULT) {
886      /* We still don't have a pair, drop the background color. Too bad. */
887      owl_function_debugmsg("colorpairs: color shortage - dropping background color.");
888      pair = owl_fmtext_get_colorpair(fg, OWL_COLOR_DEFAULT);
889    }
890    else {
891      /* We still don't have a pair, defaults all around. */
892      owl_function_debugmsg("colorpairs: color shortage - dropping foreground and background color.");
893      pair = 0;
894    }
895  }
896  return pair;
897}
Note: See TracBrowser for help on using the repository browser.