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 #ifdef HAVE_OT
33 #include <hb-ot.h>
34 #endif
35
36 struct supported_font_funcs_t {
37 char name[4];
38 void (*func) (hb_font_t *);
39 } supported_font_funcs[] =
40 {
41 #ifdef HAVE_FREETYPE
42 {"ft", hb_ft_font_set_funcs},
43 #endif
44 #ifdef HAVE_OT
45 {"ot", hb_ot_font_set_funcs},
46 #endif
47 };
48
49
50 void
fail(hb_bool_t suggest_help,const char * format,...)51 fail (hb_bool_t suggest_help, const char *format, ...)
52 {
53 const char *msg;
54
55 va_list vap;
56 va_start (vap, format);
57 msg = g_strdup_vprintf (format, vap);
58 va_end (vap);
59 const char *prgname = g_get_prgname ();
60 g_printerr ("%s: %s\n", prgname, msg);
61 if (suggest_help)
62 g_printerr ("Try `%s --help' for more information.\n", prgname);
63
64 exit (1);
65 }
66
67
68 hb_bool_t debug = false;
69
70 static gchar *
shapers_to_string(void)71 shapers_to_string (void)
72 {
73 GString *shapers = g_string_new (NULL);
74 const char **shaper_list = hb_shape_list_shapers ();
75
76 for (; *shaper_list; shaper_list++) {
77 g_string_append (shapers, *shaper_list);
78 g_string_append_c (shapers, ',');
79 }
80 g_string_truncate (shapers, MAX (0, (gint)shapers->len - 1));
81
82 return g_string_free (shapers, false);
83 }
84
85 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)86 show_version (const char *name G_GNUC_UNUSED,
87 const char *arg G_GNUC_UNUSED,
88 gpointer data G_GNUC_UNUSED,
89 GError **error G_GNUC_UNUSED)
90 {
91 g_printf ("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION);
92
93 char *shapers = shapers_to_string ();
94 g_printf ("Available shapers: %s\n", shapers);
95 g_free (shapers);
96 if (strcmp (HB_VERSION_STRING, hb_version_string ()))
97 g_printf ("Linked HarfBuzz library has a different version: %s\n", hb_version_string ());
98
99 exit(0);
100 }
101
102
103 void
add_main_options(void)104 option_parser_t::add_main_options (void)
105 {
106 GOptionEntry entries[] =
107 {
108 {"version", 0, G_OPTION_FLAG_NO_ARG,
109 G_OPTION_ARG_CALLBACK, (gpointer) &show_version, "Show version numbers", NULL},
110 {"debug", 0, 0, G_OPTION_ARG_NONE, &debug, "Free all resources before exit", NULL},
111 {NULL}
112 };
113 g_option_context_add_main_entries (context, entries, NULL);
114 }
115
116 static gboolean
pre_parse(GOptionContext * context G_GNUC_UNUSED,GOptionGroup * group G_GNUC_UNUSED,gpointer data,GError ** error)117 pre_parse (GOptionContext *context G_GNUC_UNUSED,
118 GOptionGroup *group G_GNUC_UNUSED,
119 gpointer data,
120 GError **error)
121 {
122 option_group_t *option_group = (option_group_t *) data;
123 option_group->pre_parse (error);
124 return *error == NULL;
125 }
126
127 static gboolean
post_parse(GOptionContext * context G_GNUC_UNUSED,GOptionGroup * group G_GNUC_UNUSED,gpointer data,GError ** error)128 post_parse (GOptionContext *context G_GNUC_UNUSED,
129 GOptionGroup *group G_GNUC_UNUSED,
130 gpointer data,
131 GError **error)
132 {
133 option_group_t *option_group = static_cast<option_group_t *>(data);
134 option_group->post_parse (error);
135 return *error == NULL;
136 }
137
138 void
add_group(GOptionEntry * entries,const gchar * name,const gchar * description,const gchar * help_description,option_group_t * option_group)139 option_parser_t::add_group (GOptionEntry *entries,
140 const gchar *name,
141 const gchar *description,
142 const gchar *help_description,
143 option_group_t *option_group)
144 {
145 GOptionGroup *group = g_option_group_new (name, description, help_description,
146 static_cast<gpointer>(option_group), NULL);
147 g_option_group_add_entries (group, entries);
148 g_option_group_set_parse_hooks (group, pre_parse, post_parse);
149 g_option_context_add_group (context, group);
150 }
151
152 void
parse(int * argc,char *** argv)153 option_parser_t::parse (int *argc, char ***argv)
154 {
155 setlocale (LC_ALL, "");
156
157 GError *parse_error = NULL;
158 if (!g_option_context_parse (context, argc, argv, &parse_error))
159 {
160 if (parse_error != NULL) {
161 fail (true, "%s", parse_error->message);
162 //g_error_free (parse_error);
163 } else
164 fail (true, "Option parse error");
165 }
166 }
167
168
169 static gboolean
parse_margin(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)170 parse_margin (const char *name G_GNUC_UNUSED,
171 const char *arg,
172 gpointer data,
173 GError **error G_GNUC_UNUSED)
174 {
175 view_options_t *view_opts = (view_options_t *) data;
176 view_options_t::margin_t &m = view_opts->margin;
177 switch (sscanf (arg, "%lf%*[ ,]%lf%*[ ,]%lf%*[ ,]%lf", &m.t, &m.r, &m.b, &m.l)) {
178 case 1: m.r = m.t;
179 case 2: m.b = m.t;
180 case 3: m.l = m.r;
181 case 4: return true;
182 default:
183 g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
184 "%s argument should be one to four space-separated numbers",
185 name);
186 return false;
187 }
188 }
189
190
191 static gboolean
parse_shapers(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)192 parse_shapers (const char *name G_GNUC_UNUSED,
193 const char *arg,
194 gpointer data,
195 GError **error G_GNUC_UNUSED)
196 {
197 shape_options_t *shape_opts = (shape_options_t *) data;
198 g_strfreev (shape_opts->shapers);
199 shape_opts->shapers = g_strsplit (arg, ",", 0);
200 return true;
201 }
202
203 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)204 list_shapers (const char *name G_GNUC_UNUSED,
205 const char *arg G_GNUC_UNUSED,
206 gpointer data G_GNUC_UNUSED,
207 GError **error G_GNUC_UNUSED)
208 {
209 for (const char **shaper = hb_shape_list_shapers (); *shaper; shaper++)
210 g_printf ("%s\n", *shaper);
211
212 exit(0);
213 }
214
215
216 static gboolean
parse_features(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)217 parse_features (const char *name G_GNUC_UNUSED,
218 const char *arg,
219 gpointer data,
220 GError **error G_GNUC_UNUSED)
221 {
222 shape_options_t *shape_opts = (shape_options_t *) data;
223 char *s = (char *) arg;
224 char *p;
225
226 shape_opts->num_features = 0;
227 g_free (shape_opts->features);
228 shape_opts->features = NULL;
229
230 if (!*s)
231 return true;
232
233 /* count the features first, so we can allocate memory */
234 p = s;
235 do {
236 shape_opts->num_features++;
237 p = strchr (p, ',');
238 if (p)
239 p++;
240 } while (p);
241
242 shape_opts->features = (hb_feature_t *) calloc (shape_opts->num_features, sizeof (*shape_opts->features));
243
244 /* now do the actual parsing */
245 p = s;
246 shape_opts->num_features = 0;
247 while (p && *p) {
248 char *end = strchr (p, ',');
249 if (hb_feature_from_string (p, end ? end - p : -1, &shape_opts->features[shape_opts->num_features]))
250 shape_opts->num_features++;
251 p = end ? end + 1 : NULL;
252 }
253
254 return true;
255 }
256
257 static gboolean
parse_variations(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)258 parse_variations (const char *name G_GNUC_UNUSED,
259 const char *arg,
260 gpointer data,
261 GError **error G_GNUC_UNUSED)
262 {
263 font_options_t *font_opts = (font_options_t *) data;
264 char *s = (char *) arg;
265 char *p;
266
267 font_opts->num_variations = 0;
268 g_free (font_opts->variations);
269 font_opts->variations = NULL;
270
271 if (!*s)
272 return true;
273
274 /* count the variations first, so we can allocate memory */
275 p = s;
276 do {
277 font_opts->num_variations++;
278 p = strchr (p, ',');
279 if (p)
280 p++;
281 } while (p);
282
283 font_opts->variations = (hb_variation_t *) calloc (font_opts->num_variations, sizeof (*font_opts->variations));
284
285 /* now do the actual parsing */
286 p = s;
287 font_opts->num_variations = 0;
288 while (p && *p) {
289 char *end = strchr (p, ',');
290 if (hb_variation_from_string (p, end ? end - p : -1, &font_opts->variations[font_opts->num_variations]))
291 font_opts->num_variations++;
292 p = end ? end + 1 : NULL;
293 }
294
295 return true;
296 }
297
298
299 void
add_options(option_parser_t * parser)300 view_options_t::add_options (option_parser_t *parser)
301 {
302 GOptionEntry entries[] =
303 {
304 {"annotate", 0, 0, G_OPTION_ARG_NONE, &this->annotate, "Annotate output rendering", NULL},
305 {"background", 0, 0, G_OPTION_ARG_STRING, &this->back, "Set background color (default: " DEFAULT_BACK ")", "rrggbb/rrggbbaa"},
306 {"foreground", 0, 0, G_OPTION_ARG_STRING, &this->fore, "Set foreground color (default: " DEFAULT_FORE ")", "rrggbb/rrggbbaa"},
307 {"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &this->line_space, "Set space between lines (default: 0)", "units"},
308 {"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin, "Margin around output (default: " G_STRINGIFY(DEFAULT_MARGIN) ")","one to four numbers"},
309 {NULL}
310 };
311 parser->add_group (entries,
312 "view",
313 "View options:",
314 "Options for output rendering",
315 this);
316 }
317
318 void
add_options(option_parser_t * parser)319 shape_options_t::add_options (option_parser_t *parser)
320 {
321 GOptionEntry entries[] =
322 {
323 {"list-shapers", 0, G_OPTION_FLAG_NO_ARG,
324 G_OPTION_ARG_CALLBACK, (gpointer) &list_shapers, "List available shapers and quit", NULL},
325 {"shaper", 0, G_OPTION_FLAG_HIDDEN,
326 G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Hidden duplicate of --shapers", NULL},
327 {"shapers", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Set comma-separated list of shapers to try","list"},
328 {"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction, "Set text direction (default: auto)", "ltr/rtl/ttb/btt"},
329 {"language", 0, 0, G_OPTION_ARG_STRING, &this->language, "Set text language (default: $LANG)", "langstr"},
330 {"script", 0, 0, G_OPTION_ARG_STRING, &this->script, "Set text script (default: auto)", "ISO-15924 tag"},
331 {"bot", 0, 0, G_OPTION_ARG_NONE, &this->bot, "Treat text as beginning-of-paragraph", NULL},
332 {"eot", 0, 0, G_OPTION_ARG_NONE, &this->eot, "Treat text as end-of-paragraph", NULL},
333 {"preserve-default-ignorables",0, 0, G_OPTION_ARG_NONE, &this->preserve_default_ignorables, "Preserve Default-Ignorable characters", NULL},
334 {"utf8-clusters", 0, 0, G_OPTION_ARG_NONE, &this->utf8_clusters, "Use UTF8 byte indices, not char indices", NULL},
335 {"cluster-level", 0, 0, G_OPTION_ARG_INT, &this->cluster_level, "Cluster merging level (default: 0)", "0/1/2"},
336 {"normalize-glyphs",0, 0, G_OPTION_ARG_NONE, &this->normalize_glyphs, "Rearrange glyph clusters in nominal order", NULL},
337 {"num-iterations", 0, 0, G_OPTION_ARG_INT, &this->num_iterations, "Run shaper N times (default: 1)", "N"},
338 {NULL}
339 };
340 parser->add_group (entries,
341 "shape",
342 "Shape options:",
343 "Options for the shaping process",
344 this);
345
346 const gchar *features_help = "Comma-separated list of font features\n"
347 "\n"
348 " Features can be enabled or disabled, either globally or limited to\n"
349 " specific character ranges. The format for specifying feature settings\n"
350 " follows. All valid CSS font-feature-settings values other than 'normal'\n"
351 " and 'inherited' are also accepted, though, not documented below.\n"
352 "\n"
353 " The range indices refer to the positions between Unicode characters,\n"
354 " unless the --utf8-clusters is provided, in which case range indices\n"
355 " refer to UTF-8 byte indices. The position before the first character\n"
356 " is always 0.\n"
357 "\n"
358 " The format is Python-esque. Here is how it all works:\n"
359 "\n"
360 " Syntax: Value: Start: End:\n"
361 "\n"
362 " Setting value:\n"
363 " \"kern\" 1 0 ∞ # Turn feature on\n"
364 " \"+kern\" 1 0 ∞ # Turn feature on\n"
365 " \"-kern\" 0 0 ∞ # Turn feature off\n"
366 " \"kern=0\" 0 0 ∞ # Turn feature off\n"
367 " \"kern=1\" 1 0 ∞ # Turn feature on\n"
368 " \"aalt=2\" 2 0 ∞ # Choose 2nd alternate\n"
369 "\n"
370 " Setting index:\n"
371 " \"kern[]\" 1 0 ∞ # Turn feature on\n"
372 " \"kern[:]\" 1 0 ∞ # Turn feature on\n"
373 " \"kern[5:]\" 1 5 ∞ # Turn feature on, partial\n"
374 " \"kern[:5]\" 1 0 5 # Turn feature on, partial\n"
375 " \"kern[3:5]\" 1 3 5 # Turn feature on, range\n"
376 " \"kern[3]\" 1 3 3+1 # Turn feature on, single char\n"
377 "\n"
378 " Mixing it all:\n"
379 "\n"
380 " \"aalt[3:5]=2\" 2 3 5 # Turn 2nd alternate on for range";
381
382 GOptionEntry entries2[] =
383 {
384 {"features", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_features, features_help, "list"},
385 {NULL}
386 };
387 parser->add_group (entries2,
388 "features",
389 "Features options:",
390 "Options for font features used",
391 this);
392 }
393
394 static gboolean
parse_font_size(const char * name G_GNUC_UNUSED,const char * arg,gpointer data,GError ** error G_GNUC_UNUSED)395 parse_font_size (const char *name G_GNUC_UNUSED,
396 const char *arg,
397 gpointer data,
398 GError **error G_GNUC_UNUSED)
399 {
400 font_options_t *font_opts = (font_options_t *) data;
401 if (0 == strcmp (arg, "upem"))
402 {
403 font_opts->font_size_y = font_opts->font_size_x = FONT_SIZE_UPEM;
404 return true;
405 }
406 switch (sscanf (arg, "%lf%*[ ,]%lf", &font_opts->font_size_x, &font_opts->font_size_y)) {
407 case 1: font_opts->font_size_y = font_opts->font_size_x;
408 case 2: return true;
409 default:
410 g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
411 "%s argument should be one to four space-separated numbers",
412 name);
413 return false;
414 }
415 }
416 void
add_options(option_parser_t * parser)417 font_options_t::add_options (option_parser_t *parser)
418 {
419 char *text = NULL;
420
421 {
422 ASSERT_STATIC (ARRAY_LENGTH_CONST (supported_font_funcs) > 0);
423 GString *s = g_string_new (NULL);
424 g_string_printf (s, "Set font functions implementation to use (default: %s)\n\n Supported font function implementations are: %s",
425 supported_font_funcs[0].name,
426 supported_font_funcs[0].name);
427 for (unsigned int i = 1; i < ARRAY_LENGTH (supported_font_funcs); i++)
428 {
429 g_string_append_c (s, '/');
430 g_string_append (s, supported_font_funcs[i].name);
431 }
432 text = g_string_free (s, FALSE);
433 parser->free_later (text);
434 }
435
436 char *font_size_text;
437 if (default_font_size == FONT_SIZE_UPEM)
438 font_size_text = (char *) "Font size (default: upem)";
439 else
440 {
441 font_size_text = g_strdup_printf ("Font size (default: %d)", default_font_size);
442 parser->free_later (font_size_text);
443 }
444
445 GOptionEntry entries[] =
446 {
447 {"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"},
448 {"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"},
449 {"font-size", 0, default_font_size ? 0 : G_OPTION_FLAG_HIDDEN,
450 G_OPTION_ARG_CALLBACK, (gpointer) &parse_font_size, font_size_text, "1/2 numbers or 'upem'"},
451 {"font-funcs", 0, 0, G_OPTION_ARG_STRING, &this->font_funcs, text, "impl"},
452 {NULL}
453 };
454 parser->add_group (entries,
455 "font",
456 "Font options:",
457 "Options for the font",
458 this);
459
460 const gchar *variations_help = "Comma-separated list of font variations\n"
461 "\n"
462 " Variations are set globally. The format for specifying variation settings\n"
463 " follows. All valid CSS font-variation-settings values other than 'normal'\n"
464 " and 'inherited' are also accepted, though, not documented below.\n"
465 "\n"
466 " The format is a tag, optionally followed by an equals sign, followed by a\n"
467 " number. For example:\n"
468 "\n"
469 " \"wght=500\"\n"
470 " \"slnt=-7.5\"\n";
471
472 GOptionEntry entries2[] =
473 {
474 {"variations", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_variations, variations_help, "list"},
475 {NULL}
476 };
477 parser->add_group (entries2,
478 "variations",
479 "Varitions options:",
480 "Options for font variations used",
481 this);
482 }
483
484 void
add_options(option_parser_t * parser)485 text_options_t::add_options (option_parser_t *parser)
486 {
487 GOptionEntry entries[] =
488 {
489 {"text", 0, 0, G_OPTION_ARG_STRING, &this->text, "Set input text", "string"},
490 {"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"},
491 {"text-before", 0, 0, G_OPTION_ARG_STRING, &this->text_before, "Set text context before each line", "string"},
492 {"text-after", 0, 0, G_OPTION_ARG_STRING, &this->text_after, "Set text context after each line", "string"},
493 {NULL}
494 };
495 parser->add_group (entries,
496 "text",
497 "Text options:",
498 "Options for the input text",
499 this);
500 }
501
502 void
add_options(option_parser_t * parser)503 output_options_t::add_options (option_parser_t *parser)
504 {
505 const char *text;
506
507 if (NULL == supported_formats)
508 text = "Set output serialization format";
509 else
510 {
511 char *items = g_strjoinv ("/", const_cast<char **> (supported_formats));
512 text = g_strdup_printf ("Set output format\n\n Supported output formats are: %s", items);
513 g_free (items);
514 parser->free_later ((char *) text);
515 }
516
517 GOptionEntry entries[] =
518 {
519 {"output-file", 0, 0, G_OPTION_ARG_STRING, &this->output_file, "Set output file-name (default: stdout)","filename"},
520 {"output-format", 0, 0, G_OPTION_ARG_STRING, &this->output_format, text, "format"},
521 {NULL}
522 };
523 parser->add_group (entries,
524 "output",
525 "Output destination & format options:",
526 "Options for the destination & form of the output",
527 this);
528 }
529
530
531
532 hb_font_t *
get_font(void) const533 font_options_t::get_font (void) const
534 {
535 if (font)
536 return font;
537
538 hb_blob_t *blob = NULL;
539
540 /* Create the blob */
541 {
542 char *font_data;
543 unsigned int len = 0;
544 hb_destroy_func_t destroy;
545 void *user_data;
546 hb_memory_mode_t mm;
547
548 /* This is a hell of a lot of code for just reading a file! */
549 if (!font_file)
550 fail (true, "No font file set");
551
552 if (0 == strcmp (font_file, "-")) {
553 /* read it */
554 GString *gs = g_string_new (NULL);
555 char buf[BUFSIZ];
556 #if defined(_WIN32) || defined(__CYGWIN__)
557 setmode (fileno (stdin), O_BINARY);
558 #endif
559 while (!feof (stdin)) {
560 size_t ret = fread (buf, 1, sizeof (buf), stdin);
561 if (ferror (stdin))
562 fail (false, "Failed reading font from standard input: %s",
563 strerror (errno));
564 g_string_append_len (gs, buf, ret);
565 }
566 len = gs->len;
567 font_data = g_string_free (gs, false);
568 user_data = font_data;
569 destroy = (hb_destroy_func_t) g_free;
570 mm = HB_MEMORY_MODE_WRITABLE;
571 } else {
572 GError *error = NULL;
573 GMappedFile *mf = g_mapped_file_new (font_file, false, &error);
574 if (mf) {
575 font_data = g_mapped_file_get_contents (mf);
576 len = g_mapped_file_get_length (mf);
577 if (len) {
578 destroy = (hb_destroy_func_t) g_mapped_file_unref;
579 user_data = (void *) mf;
580 mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;
581 } else
582 g_mapped_file_unref (mf);
583 } else {
584 fail (false, "%s", error->message);
585 //g_error_free (error);
586 }
587 if (!len) {
588 /* GMappedFile is buggy, it doesn't fail if file isn't regular.
589 * Try reading.
590 * https://bugzilla.gnome.org/show_bug.cgi?id=659212 */
591 GError *error = NULL;
592 gsize l;
593 if (g_file_get_contents (font_file, &font_data, &l, &error)) {
594 len = l;
595 destroy = (hb_destroy_func_t) g_free;
596 user_data = (void *) font_data;
597 mm = HB_MEMORY_MODE_WRITABLE;
598 } else {
599 fail (false, "%s", error->message);
600 //g_error_free (error);
601 }
602 }
603 }
604
605 if (debug)
606 mm = HB_MEMORY_MODE_DUPLICATE;
607
608 blob = hb_blob_create (font_data, len, mm, user_data, destroy);
609 }
610
611 /* Create the face */
612 hb_face_t *face = hb_face_create (blob, face_index);
613 hb_blob_destroy (blob);
614
615
616 font = hb_font_create (face);
617
618 if (font_size_x == FONT_SIZE_UPEM)
619 font_size_x = hb_face_get_upem (face);
620 if (font_size_y == FONT_SIZE_UPEM)
621 font_size_y = hb_face_get_upem (face);
622
623 int scale_x = (int) scalbnf (font_size_x, subpixel_bits);
624 int scale_y = (int) scalbnf (font_size_y, subpixel_bits);
625 hb_font_set_scale (font, scale_x, scale_y);
626 hb_face_destroy (face);
627
628 hb_font_set_variations (font, variations, num_variations);
629
630 void (*set_font_funcs) (hb_font_t *) = NULL;
631 if (!font_funcs)
632 {
633 set_font_funcs = supported_font_funcs[0].func;
634 }
635 else
636 {
637 for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++)
638 if (0 == g_ascii_strcasecmp (font_funcs, supported_font_funcs[i].name))
639 {
640 set_font_funcs = supported_font_funcs[i].func;
641 break;
642 }
643 if (!set_font_funcs)
644 {
645 GString *s = g_string_new (NULL);
646 for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++)
647 {
648 if (i)
649 g_string_append_c (s, '/');
650 g_string_append (s, supported_font_funcs[i].name);
651 }
652 char *p = g_string_free (s, FALSE);
653 fail (false, "Unknown font function implementation `%s'; supported values are: %s; default is %s",
654 font_funcs,
655 p,
656 supported_font_funcs[0].name);
657 //free (p);
658 }
659 }
660 set_font_funcs (font);
661
662 return font;
663 }
664
665
666 const char *
get_line(unsigned int * len)667 text_options_t::get_line (unsigned int *len)
668 {
669 if (text) {
670 if (!line) line = text;
671 if (line_len == (unsigned int) -1)
672 line_len = strlen (line);
673
674 if (!line_len) {
675 *len = 0;
676 return NULL;
677 }
678
679 const char *ret = line;
680 const char *p = (const char *) memchr (line, '\n', line_len);
681 unsigned int ret_len;
682 if (!p) {
683 ret_len = line_len;
684 line += ret_len;
685 line_len = 0;
686 } else {
687 ret_len = p - ret;
688 line += ret_len + 1;
689 line_len -= ret_len + 1;
690 }
691
692 *len = ret_len;
693 return ret;
694 }
695
696 if (!fp) {
697 if (!text_file)
698 fail (true, "At least one of text or text-file must be set");
699
700 if (0 != strcmp (text_file, "-"))
701 fp = fopen (text_file, "r");
702 else
703 fp = stdin;
704
705 if (!fp)
706 fail (false, "Failed opening text file `%s': %s",
707 text_file, strerror (errno));
708
709 gs = g_string_new (NULL);
710 }
711
712 g_string_set_size (gs, 0);
713 char buf[BUFSIZ];
714 while (fgets (buf, sizeof (buf), fp)) {
715 unsigned int bytes = strlen (buf);
716 if (bytes && buf[bytes - 1] == '\n') {
717 bytes--;
718 g_string_append_len (gs, buf, bytes);
719 break;
720 }
721 g_string_append_len (gs, buf, bytes);
722 }
723 if (ferror (fp))
724 fail (false, "Failed reading text: %s",
725 strerror (errno));
726 *len = gs->len;
727 return !*len && feof (fp) ? NULL : gs->str;
728 }
729
730
731 FILE *
get_file_handle(void)732 output_options_t::get_file_handle (void)
733 {
734 if (fp)
735 return fp;
736
737 if (output_file)
738 fp = fopen (output_file, "wb");
739 else {
740 #if defined(_WIN32) || defined(__CYGWIN__)
741 setmode (fileno (stdout), O_BINARY);
742 #endif
743 fp = stdout;
744 }
745 if (!fp)
746 fail (false, "Cannot open output file `%s': %s",
747 g_filename_display_name (output_file), strerror (errno));
748
749 return fp;
750 }
751
752 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)753 parse_verbose (const char *name G_GNUC_UNUSED,
754 const char *arg G_GNUC_UNUSED,
755 gpointer data G_GNUC_UNUSED,
756 GError **error G_GNUC_UNUSED)
757 {
758 format_options_t *format_opts = (format_options_t *) data;
759 format_opts->show_text = format_opts->show_unicode = format_opts->show_line_num = true;
760 return true;
761 }
762
763 void
add_options(option_parser_t * parser)764 format_options_t::add_options (option_parser_t *parser)
765 {
766 GOptionEntry entries[] =
767 {
768 {"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Prefix each line of output with its corresponding input text", NULL},
769 {"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Prefix each line of output with its corresponding input codepoint(s)", NULL},
770 {"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Prefix each line of output with its corresponding input line number", NULL},
771 {"verbose", 0, G_OPTION_FLAG_NO_ARG,
772 G_OPTION_ARG_CALLBACK, (gpointer) &parse_verbose, "Prefix each line of output with all of the above", NULL},
773 {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE,
774 G_OPTION_ARG_NONE, &this->show_glyph_names, "Output glyph indices instead of names", NULL},
775 {"no-positions", 0, G_OPTION_FLAG_REVERSE,
776 G_OPTION_ARG_NONE, &this->show_positions, "Do not output glyph positions", NULL},
777 {"no-clusters", 0, G_OPTION_FLAG_REVERSE,
778 G_OPTION_ARG_NONE, &this->show_clusters, "Do not output cluster indices", NULL},
779 {"show-extents", 0, 0, G_OPTION_ARG_NONE, &this->show_extents, "Output glyph extents", NULL},
780 {NULL}
781 };
782 parser->add_group (entries,
783 "output-syntax",
784 "Output syntax:\n"
785 " text: [<glyph name or index>=<glyph cluster index within input>@<horizontal displacement>,<vertical displacement>+<horizontal advance>,<vertical advance>|...]\n"
786 " json: [{\"g\": <glyph name or index>, \"ax\": <horizontal advance>, \"ay\": <vertical advance>, \"dx\": <horizontal displacement>, \"dy\": <vertical displacement>, \"cl\": <glyph cluster index within input>}, ...]\n"
787 "\nOutput syntax options:",
788 "Options for the syntax of the output",
789 this);
790 }
791
792 void
serialize_unicode(hb_buffer_t * buffer,GString * gs)793 format_options_t::serialize_unicode (hb_buffer_t *buffer,
794 GString *gs)
795 {
796 unsigned int num_glyphs = hb_buffer_get_length (buffer);
797 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
798
799 g_string_append_c (gs, '<');
800 for (unsigned int i = 0; i < num_glyphs; i++)
801 {
802 if (i)
803 g_string_append_c (gs, ',');
804 g_string_append_printf (gs, "U+%04X", info->codepoint);
805 info++;
806 }
807 g_string_append_c (gs, '>');
808 }
809
810 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)811 format_options_t::serialize_glyphs (hb_buffer_t *buffer,
812 hb_font_t *font,
813 hb_buffer_serialize_format_t output_format,
814 hb_buffer_serialize_flags_t flags,
815 GString *gs)
816 {
817 g_string_append_c (gs, '[');
818 unsigned int num_glyphs = hb_buffer_get_length (buffer);
819 unsigned int start = 0;
820
821 while (start < num_glyphs) {
822 char buf[1024];
823 unsigned int consumed;
824 start += hb_buffer_serialize_glyphs (buffer, start, num_glyphs,
825 buf, sizeof (buf), &consumed,
826 font, output_format, flags);
827 if (!consumed)
828 break;
829 g_string_append (gs, buf);
830 }
831 g_string_append_c (gs, ']');
832 }
833 void
serialize_line_no(unsigned int line_no,GString * gs)834 format_options_t::serialize_line_no (unsigned int line_no,
835 GString *gs)
836 {
837 if (show_line_num)
838 g_string_append_printf (gs, "%d: ", line_no);
839 }
840 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)841 format_options_t::serialize_buffer_of_text (hb_buffer_t *buffer,
842 unsigned int line_no,
843 const char *text,
844 unsigned int text_len,
845 hb_font_t *font,
846 GString *gs)
847 {
848 if (show_text) {
849 serialize_line_no (line_no, gs);
850 g_string_append_c (gs, '(');
851 g_string_append_len (gs, text, text_len);
852 g_string_append_c (gs, ')');
853 g_string_append_c (gs, '\n');
854 }
855
856 if (show_unicode) {
857 serialize_line_no (line_no, gs);
858 serialize_unicode (buffer, gs);
859 g_string_append_c (gs, '\n');
860 }
861 }
862 void
serialize_message(unsigned int line_no,const char * msg,GString * gs)863 format_options_t::serialize_message (unsigned int line_no,
864 const char *msg,
865 GString *gs)
866 {
867 serialize_line_no (line_no, gs);
868 g_string_append_printf (gs, "%s", msg);
869 g_string_append_c (gs, '\n');
870 }
871 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)872 format_options_t::serialize_buffer_of_glyphs (hb_buffer_t *buffer,
873 unsigned int line_no,
874 const char *text,
875 unsigned int text_len,
876 hb_font_t *font,
877 hb_buffer_serialize_format_t output_format,
878 hb_buffer_serialize_flags_t format_flags,
879 GString *gs)
880 {
881 serialize_line_no (line_no, gs);
882 serialize_glyphs (buffer, font, output_format, format_flags, gs);
883 g_string_append_c (gs, '\n');
884 }
885