1 /*
2 * Copyright © 2011,2012 Google, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Google Author(s): Behdad Esfahbod
25 */
26
27 #include "options.hh"
28
29 #ifdef HAVE_FREETYPE
30 #include <hb-ft.h>
31 #endif
32
33
34 void
fail(hb_bool_t suggest_help,const char * format,...)35 fail (hb_bool_t suggest_help, const char *format, ...)
36 {
37 const char *msg;
38
39 va_list vap;
40 va_start (vap, format);
41 msg = g_strdup_vprintf (format, vap);
42 const char *prgname = g_get_prgname ();
43 g_printerr ("%s: %s\n", prgname, msg);
44 if (suggest_help)
45 g_printerr ("Try `%s --help' for more information.\n", prgname);
46
47 exit (1);
48 }
49
50
51 hb_bool_t debug = false;
52
53 static gchar *
shapers_to_string(void)54 shapers_to_string (void)
55 {
56 GString *shapers = g_string_new (NULL);
57 const char **shaper_list = hb_shape_list_shapers ();
58
59 for (; *shaper_list; shaper_list++) {
60 g_string_append (shapers, *shaper_list);
61 g_string_append_c (shapers, ',');
62 }
63 g_string_truncate (shapers, MAX (0, (gint)shapers->len - 1));
64
65 return g_string_free (shapers, false);
66 }
67
68 static G_GNUC_NORETURN gboolean
show_version(const char * name G_GNUC_UNUSED,const char * arg G_GNUC_UNUSED,gpointer data G_GNUC_UNUSED,GError ** error G_GNUC_UNUSED)69 show_version (const char *name G_GNUC_UNUSED,
70 const char *arg G_GNUC_UNUSED,
71 gpointer data G_GNUC_UNUSED,
72 GError **error G_GNUC_UNUSED)
73 {
74 g_printf ("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION);
75
76 char *shapers = shapers_to_string ();
77 g_printf ("Available shapers: %s\n", shapers);
78 g_free (shapers);
79 if (strcmp (HB_VERSION_STRING, hb_version_string ()))
80 g_printf ("Linked HarfBuzz library has a different version: %s\n", hb_version_string ());
81
82 exit(0);
83 }
84
85
86 void
add_main_options(void)87 option_parser_t::add_main_options (void)
88 {
89 GOptionEntry entries[] =
90 {
91 {"version", 0, G_OPTION_FLAG_NO_ARG,
92 G_OPTION_ARG_CALLBACK, (gpointer) &show_version, "Show version numbers", NULL},
93 {"debug", 0, 0, G_OPTION_ARG_NONE, &debug, "Free all resources before exit", NULL},
94 {NULL}
95 };
96 g_option_context_add_main_entries (context, entries, NULL);
97 }
98
99 static gboolean
pre_parse(GOptionContext * context G_GNUC_UNUSED,GOptionGroup * group G_GNUC_UNUSED,gpointer data,GError ** error)100 pre_parse (GOptionContext *context G_GNUC_UNUSED,
101 GOptionGroup *group G_GNUC_UNUSED,
102 gpointer data,
103 GError **error)
104 {
105 option_group_t *option_group = (option_group_t *) data;
106 option_group->pre_parse (error);
107 return *error == NULL;
108 }
109
110 static gboolean
post_parse(GOptionContext * context G_GNUC_UNUSED,GOptionGroup * group G_GNUC_UNUSED,gpointer data,GError ** error)111 post_parse (GOptionContext *context G_GNUC_UNUSED,
112 GOptionGroup *group G_GNUC_UNUSED,
113 gpointer data,
114 GError **error)
115 {
116 option_group_t *option_group = static_cast<option_group_t *>(data);
117 option_group->post_parse (error);
118 return *error == NULL;
119 }
120
121 void
add_group(GOptionEntry * entries,const gchar * name,const gchar * description,const gchar * help_description,option_group_t * option_group)122 option_parser_t::add_group (GOptionEntry *entries,
123 const gchar *name,
124 const gchar *description,
125 const gchar *help_description,
126 option_group_t *option_group)
127 {
128 GOptionGroup *group = g_option_group_new (name, description, help_description,
129 static_cast<gpointer>(option_group), NULL);
130 g_option_group_add_entries (group, entries);
131 g_option_group_set_parse_hooks (group, pre_parse, post_parse);
132 g_option_context_add_group (context, group);
133 }
134
135 void
parse(int * argc,char *** argv)136 option_parser_t::parse (int *argc, char ***argv)
137 {
138 setlocale (LC_ALL, "");
139
140 GError *parse_error = NULL;
141 if (!g_option_context_parse (context, argc, argv, &parse_error))
142 {
143 if (parse_error != NULL) {
144 fail (true, "%s", parse_error->message);
145 //g_error_free (parse_error);
146 } else
147 fail (true, "Option parse error");
148 }
149 }
150
151
152 static gboolean
parse_margin(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)153 parse_margin (const char *name G_GNUC_UNUSED,
154 const char *arg,
155 gpointer data,
156 GError **error G_GNUC_UNUSED)
157 {
158 view_options_t *view_opts = (view_options_t *) data;
159 view_options_t::margin_t &m = view_opts->margin;
160 switch (sscanf (arg, "%lf %lf %lf %lf", &m.t, &m.r, &m.b, &m.l)) {
161 case 1: m.r = m.t;
162 case 2: m.b = m.t;
163 case 3: m.l = m.r;
164 case 4: return true;
165 default:
166 g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
167 "%s argument should be one to four space-separated numbers",
168 name);
169 return false;
170 }
171 }
172
173
174 static gboolean
parse_shapers(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)175 parse_shapers (const char *name G_GNUC_UNUSED,
176 const char *arg,
177 gpointer data,
178 GError **error G_GNUC_UNUSED)
179 {
180 shape_options_t *shape_opts = (shape_options_t *) data;
181 g_strfreev (shape_opts->shapers);
182 shape_opts->shapers = g_strsplit (arg, ",", 0);
183 return true;
184 }
185
186 static G_GNUC_NORETURN gboolean
list_shapers(const char * name G_GNUC_UNUSED,const char * arg G_GNUC_UNUSED,gpointer data G_GNUC_UNUSED,GError ** error G_GNUC_UNUSED)187 list_shapers (const char *name G_GNUC_UNUSED,
188 const char *arg G_GNUC_UNUSED,
189 gpointer data G_GNUC_UNUSED,
190 GError **error G_GNUC_UNUSED)
191 {
192 for (const char **shaper = hb_shape_list_shapers (); *shaper; shaper++)
193 g_printf ("%s\n", *shaper);
194
195 exit(0);
196 }
197
198
199 static gboolean
parse_features(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)200 parse_features (const char *name G_GNUC_UNUSED,
201 const char *arg,
202 gpointer data,
203 GError **error G_GNUC_UNUSED)
204 {
205 shape_options_t *shape_opts = (shape_options_t *) data;
206 char *s = (char *) arg;
207 char *p;
208
209 shape_opts->num_features = 0;
210 g_free (shape_opts->features);
211 shape_opts->features = NULL;
212
213 if (!*s)
214 return true;
215
216 /* count the features first, so we can allocate memory */
217 p = s;
218 do {
219 shape_opts->num_features++;
220 p = strchr (p, ',');
221 if (p)
222 p++;
223 } while (p);
224
225 shape_opts->features = (hb_feature_t *) calloc (shape_opts->num_features, sizeof (*shape_opts->features));
226
227 /* now do the actual parsing */
228 p = s;
229 shape_opts->num_features = 0;
230 while (p && *p) {
231 char *end = strchr (p, ',');
232 if (hb_feature_from_string (p, end ? end - p : -1, &shape_opts->features[shape_opts->num_features]))
233 shape_opts->num_features++;
234 p = end ? end + 1 : NULL;
235 }
236
237 return true;
238 }
239
240
241 void
add_options(option_parser_t * parser)242 view_options_t::add_options (option_parser_t *parser)
243 {
244 GOptionEntry entries[] =
245 {
246 {"annotate", 0, 0, G_OPTION_ARG_NONE, &this->annotate, "Annotate output rendering", NULL},
247 {"background", 0, 0, G_OPTION_ARG_STRING, &this->back, "Set background color (default: " DEFAULT_BACK ")", "red/#rrggbb/#rrggbbaa"},
248 {"foreground", 0, 0, G_OPTION_ARG_STRING, &this->fore, "Set foreground color (default: " DEFAULT_FORE ")", "red/#rrggbb/#rrggbbaa"},
249 {"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &this->line_space, "Set space between lines (default: 0)", "units"},
250 {"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin, "Margin around output (default: " G_STRINGIFY(DEFAULT_MARGIN) ")","one to four numbers"},
251 {"font-size", 0, 0, G_OPTION_ARG_DOUBLE, &this->font_size, "Font size (default: " G_STRINGIFY(DEFAULT_FONT_SIZE) ")","size"},
252 {NULL}
253 };
254 parser->add_group (entries,
255 "view",
256 "View options:",
257 "Options controlling output rendering",
258 this);
259 }
260
261 void
add_options(option_parser_t * parser)262 shape_options_t::add_options (option_parser_t *parser)
263 {
264 GOptionEntry entries[] =
265 {
266 {"list-shapers", 0, G_OPTION_FLAG_NO_ARG,
267 G_OPTION_ARG_CALLBACK, (gpointer) &list_shapers, "List available shapers and quit", NULL},
268 {"shaper", 0, G_OPTION_FLAG_HIDDEN,
269 G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Hidden duplicate of --shapers", NULL},
270 {"shapers", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Comma-separated list of shapers to try","list"},
271 {"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction, "Set text direction (default: auto)", "ltr/rtl/ttb/btt"},
272 {"language", 0, 0, G_OPTION_ARG_STRING, &this->language, "Set text language (default: $LANG)", "langstr"},
273 {"script", 0, 0, G_OPTION_ARG_STRING, &this->script, "Set text script (default: auto)", "ISO-15924 tag"},
274 {"bot", 0, 0, G_OPTION_ARG_NONE, &this->bot, "Treat text as beginning-of-paragraph", NULL},
275 {"eot", 0, 0, G_OPTION_ARG_NONE, &this->eot, "Treat text as end-of-paragraph", NULL},
276 {"preserve-default-ignorables",0, 0, G_OPTION_ARG_NONE, &this->preserve_default_ignorables, "Preserve Default-Ignorable characters", NULL},
277 {"utf8-clusters", 0, 0, G_OPTION_ARG_NONE, &this->utf8_clusters, "Use UTF8 byte indices, not char indices", NULL},
278 {"normalize-glyphs",0, 0, G_OPTION_ARG_NONE, &this->normalize_glyphs, "Rearrange glyph clusters in nominal order", NULL},
279 {NULL}
280 };
281 parser->add_group (entries,
282 "shape",
283 "Shape options:",
284 "Options controlling the shaping process",
285 this);
286
287 const gchar *features_help = "Comma-separated list of font features\n"
288 "\n"
289 " Features can be enabled or disabled, either globally or limited to\n"
290 " specific character ranges.\n"
291 "\n"
292 " The range indices refer to the positions between Unicode characters,\n"
293 " unless the --utf8-clusters is provided, in which case range indices\n"
294 " refer to UTF-8 byte indices. The position before the first character\n"
295 " is always 0.\n"
296 "\n"
297 " The format is Python-esque. Here is how it all works:\n"
298 "\n"
299 " Syntax: Value: Start: End:\n"
300 "\n"
301 " Setting value:\n"
302 " \"kern\" 1 0 ∞ # Turn feature on\n"
303 " \"+kern\" 1 0 ∞ # Turn feature on\n"
304 " \"-kern\" 0 0 ∞ # Turn feature off\n"
305 " \"kern=0\" 0 0 ∞ # Turn feature off\n"
306 " \"kern=1\" 1 0 ∞ # Turn feature on\n"
307 " \"aalt=2\" 2 0 ∞ # Choose 2nd alternate\n"
308 "\n"
309 " Setting index:\n"
310 " \"kern[]\" 1 0 ∞ # Turn feature on\n"
311 " \"kern[:]\" 1 0 ∞ # Turn feature on\n"
312 " \"kern[5:]\" 1 5 ∞ # Turn feature on, partial\n"
313 " \"kern[:5]\" 1 0 5 # Turn feature on, partial\n"
314 " \"kern[3:5]\" 1 3 5 # Turn feature on, range\n"
315 " \"kern[3]\" 1 3 3+1 # Turn feature on, single char\n"
316 "\n"
317 " Mixing it all:\n"
318 "\n"
319 " \"aalt[3:5]=2\" 2 3 5 # Turn 2nd alternate on for range";
320
321 GOptionEntry entries2[] =
322 {
323 {"features", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_features, features_help, "list"},
324 {NULL}
325 };
326 parser->add_group (entries2,
327 "features",
328 "Features options:",
329 "Options controlling font features used",
330 this);
331 }
332
333 void
add_options(option_parser_t * parser)334 font_options_t::add_options (option_parser_t *parser)
335 {
336 GOptionEntry entries[] =
337 {
338 {"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Font file-name", "filename"},
339 {"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Face index (default: 0)", "index"},
340 {NULL}
341 };
342 parser->add_group (entries,
343 "font",
344 "Font options:",
345 "Options controlling the font",
346 this);
347 }
348
349 void
add_options(option_parser_t * parser)350 text_options_t::add_options (option_parser_t *parser)
351 {
352 GOptionEntry entries[] =
353 {
354 {"text", 0, 0, G_OPTION_ARG_STRING, &this->text, "Set input text", "string"},
355 {"text-file", 0, 0, G_OPTION_ARG_STRING, &this->text_file, "Set input text file-name\n\n If no text is provided, standard input is used for input.\n", "filename"},
356 {"text-before", 0, 0, G_OPTION_ARG_STRING, &this->text_before, "Set text context before each line", "string"},
357 {"text-after", 0, 0, G_OPTION_ARG_STRING, &this->text_after, "Set text context after each line", "string"},
358 {NULL}
359 };
360 parser->add_group (entries,
361 "text",
362 "Text options:",
363 "Options controlling the input text",
364 this);
365 }
366
367 void
add_options(option_parser_t * parser)368 output_options_t::add_options (option_parser_t *parser)
369 {
370 const char *text;
371
372 if (NULL == supported_formats)
373 text = "Set output format";
374 else
375 text = g_strdup_printf ("Set output format\n\n Supported formats are: %s", supported_formats);
376
377 GOptionEntry entries[] =
378 {
379 {"output-file", 0, 0, G_OPTION_ARG_STRING, &this->output_file, "Set output file-name (default: stdout)","filename"},
380 {"output-format", 0, 0, G_OPTION_ARG_STRING, &this->output_format, text, "format"},
381 {NULL}
382 };
383 parser->add_group (entries,
384 "output",
385 "Output options:",
386 "Options controlling the output",
387 this);
388 }
389
390
391
392 hb_font_t *
get_font(void) const393 font_options_t::get_font (void) const
394 {
395 if (font)
396 return font;
397
398 hb_blob_t *blob = NULL;
399
400 /* Create the blob */
401 {
402 char *font_data;
403 unsigned int len = 0;
404 hb_destroy_func_t destroy;
405 void *user_data;
406 hb_memory_mode_t mm;
407
408 /* This is a hell of a lot of code for just reading a file! */
409 if (!font_file)
410 fail (true, "No font file set");
411
412 if (0 == strcmp (font_file, "-")) {
413 /* read it */
414 GString *gs = g_string_new (NULL);
415 char buf[BUFSIZ];
416 #if defined(_WIN32) || defined(__CYGWIN__)
417 setmode (fileno (stdin), _O_BINARY);
418 #endif
419 while (!feof (stdin)) {
420 size_t ret = fread (buf, 1, sizeof (buf), stdin);
421 if (ferror (stdin))
422 fail (false, "Failed reading font from standard input: %s",
423 strerror (errno));
424 g_string_append_len (gs, buf, ret);
425 }
426 len = gs->len;
427 font_data = g_string_free (gs, false);
428 user_data = font_data;
429 destroy = (hb_destroy_func_t) g_free;
430 mm = HB_MEMORY_MODE_WRITABLE;
431 } else {
432 GError *error = NULL;
433 GMappedFile *mf = g_mapped_file_new (font_file, false, &error);
434 if (mf) {
435 font_data = g_mapped_file_get_contents (mf);
436 len = g_mapped_file_get_length (mf);
437 if (len) {
438 destroy = (hb_destroy_func_t) g_mapped_file_unref;
439 user_data = (void *) mf;
440 mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;
441 } else
442 g_mapped_file_unref (mf);
443 } else {
444 fail (false, "%s", error->message);
445 //g_error_free (error);
446 }
447 if (!len) {
448 /* GMappedFile is buggy, it doesn't fail if file isn't regular.
449 * Try reading.
450 * https://bugzilla.gnome.org/show_bug.cgi?id=659212 */
451 GError *error = NULL;
452 gsize l;
453 if (g_file_get_contents (font_file, &font_data, &l, &error)) {
454 len = l;
455 destroy = (hb_destroy_func_t) g_free;
456 user_data = (void *) font_data;
457 mm = HB_MEMORY_MODE_WRITABLE;
458 } else {
459 fail (false, "%s", error->message);
460 //g_error_free (error);
461 }
462 }
463 }
464
465 blob = hb_blob_create (font_data, len, mm, user_data, destroy);
466 }
467
468 /* Create the face */
469 hb_face_t *face = hb_face_create (blob, face_index);
470 hb_blob_destroy (blob);
471
472
473 font = hb_font_create (face);
474
475 unsigned int upem = hb_face_get_upem (face);
476 hb_font_set_scale (font, upem, upem);
477 hb_face_destroy (face);
478
479 #ifdef HAVE_FREETYPE
480 hb_ft_font_set_funcs (font);
481 #endif
482
483 return font;
484 }
485
486
487 const char *
get_line(unsigned int * len)488 text_options_t::get_line (unsigned int *len)
489 {
490 if (text) {
491 if (text_len == (unsigned int) -1)
492 text_len = strlen (text);
493
494 if (!text_len) {
495 *len = 0;
496 return NULL;
497 }
498
499 const char *ret = text;
500 const char *p = (const char *) memchr (text, '\n', text_len);
501 unsigned int ret_len;
502 if (!p) {
503 ret_len = text_len;
504 text += ret_len;
505 text_len = 0;
506 } else {
507 ret_len = p - ret;
508 text += ret_len + 1;
509 text_len -= ret_len + 1;
510 }
511
512 *len = ret_len;
513 return ret;
514 }
515
516 if (!fp) {
517 if (!text_file)
518 fail (true, "At least one of text or text-file must be set");
519
520 if (0 != strcmp (text_file, "-"))
521 fp = fopen (text_file, "r");
522 else
523 fp = stdin;
524
525 if (!fp)
526 fail (false, "Failed opening text file `%s': %s",
527 text_file, strerror (errno));
528
529 gs = g_string_new (NULL);
530 }
531
532 g_string_set_size (gs, 0);
533 char buf[BUFSIZ];
534 while (fgets (buf, sizeof (buf), fp)) {
535 unsigned int bytes = strlen (buf);
536 if (bytes && buf[bytes - 1] == '\n') {
537 bytes--;
538 g_string_append_len (gs, buf, bytes);
539 break;
540 }
541 g_string_append_len (gs, buf, bytes);
542 }
543 if (ferror (fp))
544 fail (false, "Failed reading text: %s",
545 strerror (errno));
546 *len = gs->len;
547 return !*len && feof (fp) ? NULL : gs->str;
548 }
549
550
551 FILE *
get_file_handle(void)552 output_options_t::get_file_handle (void)
553 {
554 if (fp)
555 return fp;
556
557 if (output_file)
558 fp = fopen (output_file, "wb");
559 else {
560 #if defined(_WIN32) || defined(__CYGWIN__)
561 setmode (fileno (stdout), _O_BINARY);
562 #endif
563 fp = stdout;
564 }
565 if (!fp)
566 fail (false, "Cannot open output file `%s': %s",
567 g_filename_display_name (output_file), strerror (errno));
568
569 return fp;
570 }
571
572 static gboolean
parse_verbose(const char * name G_GNUC_UNUSED,const char * arg G_GNUC_UNUSED,gpointer data G_GNUC_UNUSED,GError ** error G_GNUC_UNUSED)573 parse_verbose (const char *name G_GNUC_UNUSED,
574 const char *arg G_GNUC_UNUSED,
575 gpointer data G_GNUC_UNUSED,
576 GError **error G_GNUC_UNUSED)
577 {
578 format_options_t *format_opts = (format_options_t *) data;
579 format_opts->show_text = format_opts->show_unicode = format_opts->show_line_num = true;
580 return true;
581 }
582
583 void
add_options(option_parser_t * parser)584 format_options_t::add_options (option_parser_t *parser)
585 {
586 GOptionEntry entries[] =
587 {
588 {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_glyph_names, "Use glyph indices instead of names", NULL},
589 {"no-positions", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_positions, "Do not show glyph positions", NULL},
590 {"no-clusters", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_clusters, "Do not show cluster mapping", NULL},
591 {"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Show input text", NULL},
592 {"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Show input Unicode codepoints", NULL},
593 {"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Show line numbers", NULL},
594 {"verbose", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,(gpointer) &parse_verbose, "Show everything", NULL},
595 {NULL}
596 };
597 parser->add_group (entries,
598 "format",
599 "Format options:",
600 "Options controlling the formatting of buffer contents",
601 this);
602 }
603
604 void
serialize_unicode(hb_buffer_t * buffer,GString * gs)605 format_options_t::serialize_unicode (hb_buffer_t *buffer,
606 GString *gs)
607 {
608 unsigned int num_glyphs = hb_buffer_get_length (buffer);
609 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
610
611 g_string_append_c (gs, '<');
612 for (unsigned int i = 0; i < num_glyphs; i++)
613 {
614 if (i)
615 g_string_append_c (gs, ',');
616 g_string_append_printf (gs, "U+%04X", info->codepoint);
617 info++;
618 }
619 g_string_append_c (gs, '>');
620 }
621
622 void
serialize_glyphs(hb_buffer_t * buffer,hb_font_t * font,hb_buffer_serialize_format_t output_format,hb_buffer_serialize_flags_t flags,GString * gs)623 format_options_t::serialize_glyphs (hb_buffer_t *buffer,
624 hb_font_t *font,
625 hb_buffer_serialize_format_t output_format,
626 hb_buffer_serialize_flags_t flags,
627 GString *gs)
628 {
629 g_string_append_c (gs, '[');
630 unsigned int num_glyphs = hb_buffer_get_length (buffer);
631 unsigned int start = 0;
632
633 while (start < num_glyphs) {
634 char buf[1024];
635 unsigned int consumed;
636 start += hb_buffer_serialize_glyphs (buffer, start, num_glyphs,
637 buf, sizeof (buf), &consumed,
638 font, output_format, flags);
639 if (!consumed)
640 break;
641 g_string_append (gs, buf);
642 }
643 g_string_append_c (gs, ']');
644 }
645 void
serialize_line_no(unsigned int line_no,GString * gs)646 format_options_t::serialize_line_no (unsigned int line_no,
647 GString *gs)
648 {
649 if (show_line_num)
650 g_string_append_printf (gs, "%d: ", line_no);
651 }
652 void
serialize_buffer_of_text(hb_buffer_t * buffer,unsigned int line_no,const char * text,unsigned int text_len,hb_font_t * font,GString * gs)653 format_options_t::serialize_buffer_of_text (hb_buffer_t *buffer,
654 unsigned int line_no,
655 const char *text,
656 unsigned int text_len,
657 hb_font_t *font,
658 GString *gs)
659 {
660 if (show_text) {
661 serialize_line_no (line_no, gs);
662 g_string_append_c (gs, '(');
663 g_string_append_len (gs, text, text_len);
664 g_string_append_c (gs, ')');
665 g_string_append_c (gs, '\n');
666 }
667
668 if (show_unicode) {
669 serialize_line_no (line_no, gs);
670 serialize_unicode (buffer, gs);
671 g_string_append_c (gs, '\n');
672 }
673 }
674 void
serialize_message(unsigned int line_no,const char * msg,GString * gs)675 format_options_t::serialize_message (unsigned int line_no,
676 const char *msg,
677 GString *gs)
678 {
679 serialize_line_no (line_no, gs);
680 g_string_append_printf (gs, "%s", msg);
681 g_string_append_c (gs, '\n');
682 }
683 void
serialize_buffer_of_glyphs(hb_buffer_t * buffer,unsigned int line_no,const char * text,unsigned int text_len,hb_font_t * font,hb_buffer_serialize_format_t output_format,hb_buffer_serialize_flags_t format_flags,GString * gs)684 format_options_t::serialize_buffer_of_glyphs (hb_buffer_t *buffer,
685 unsigned int line_no,
686 const char *text,
687 unsigned int text_len,
688 hb_font_t *font,
689 hb_buffer_serialize_format_t output_format,
690 hb_buffer_serialize_flags_t format_flags,
691 GString *gs)
692 {
693 serialize_line_no (line_no, gs);
694 serialize_glyphs (buffer, font, output_format, format_flags, gs);
695 g_string_append_c (gs, '\n');
696 }
697