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-font.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 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 const char *prgname = g_get_prgname (); 59 g_printerr ("%s: %s\n", prgname, msg); 60 if (suggest_help) 61 g_printerr ("Try `%s --help' for more information.\n", prgname); 62 63 exit (1); 64 } 65 66 67 hb_bool_t debug = false; 68 69 static gchar * 70 shapers_to_string (void) 71 { 72 GString *shapers = g_string_new (NULL); 73 const char **shaper_list = hb_shape_list_shapers (); 74 75 for (; *shaper_list; shaper_list++) { 76 g_string_append (shapers, *shaper_list); 77 g_string_append_c (shapers, ','); 78 } 79 g_string_truncate (shapers, MAX (0, (gint)shapers->len - 1)); 80 81 return g_string_free (shapers, false); 82 } 83 84 static G_GNUC_NORETURN gboolean 85 show_version (const char *name G_GNUC_UNUSED, 86 const char *arg G_GNUC_UNUSED, 87 gpointer data G_GNUC_UNUSED, 88 GError **error G_GNUC_UNUSED) 89 { 90 g_printf ("%s (%s) %s\n", g_get_prgname (), PACKAGE_NAME, PACKAGE_VERSION); 91 92 char *shapers = shapers_to_string (); 93 g_printf ("Available shapers: %s\n", shapers); 94 g_free (shapers); 95 if (strcmp (HB_VERSION_STRING, hb_version_string ())) 96 g_printf ("Linked HarfBuzz library has a different version: %s\n", hb_version_string ()); 97 98 exit(0); 99 } 100 101 102 void 103 option_parser_t::add_main_options (void) 104 { 105 GOptionEntry entries[] = 106 { 107 {"version", 0, G_OPTION_FLAG_NO_ARG, 108 G_OPTION_ARG_CALLBACK, (gpointer) &show_version, "Show version numbers", NULL}, 109 {"debug", 0, 0, G_OPTION_ARG_NONE, &debug, "Free all resources before exit", NULL}, 110 {NULL} 111 }; 112 g_option_context_add_main_entries (context, entries, NULL); 113 } 114 115 static gboolean 116 pre_parse (GOptionContext *context G_GNUC_UNUSED, 117 GOptionGroup *group G_GNUC_UNUSED, 118 gpointer data, 119 GError **error) 120 { 121 option_group_t *option_group = (option_group_t *) data; 122 option_group->pre_parse (error); 123 return *error == NULL; 124 } 125 126 static gboolean 127 post_parse (GOptionContext *context G_GNUC_UNUSED, 128 GOptionGroup *group G_GNUC_UNUSED, 129 gpointer data, 130 GError **error) 131 { 132 option_group_t *option_group = static_cast<option_group_t *>(data); 133 option_group->post_parse (error); 134 return *error == NULL; 135 } 136 137 void 138 option_parser_t::add_group (GOptionEntry *entries, 139 const gchar *name, 140 const gchar *description, 141 const gchar *help_description, 142 option_group_t *option_group) 143 { 144 GOptionGroup *group = g_option_group_new (name, description, help_description, 145 static_cast<gpointer>(option_group), NULL); 146 g_option_group_add_entries (group, entries); 147 g_option_group_set_parse_hooks (group, pre_parse, post_parse); 148 g_option_context_add_group (context, group); 149 } 150 151 void 152 option_parser_t::parse (int *argc, char ***argv) 153 { 154 setlocale (LC_ALL, ""); 155 156 GError *parse_error = NULL; 157 if (!g_option_context_parse (context, argc, argv, &parse_error)) 158 { 159 if (parse_error != NULL) { 160 fail (true, "%s", parse_error->message); 161 //g_error_free (parse_error); 162 } else 163 fail (true, "Option parse error"); 164 } 165 } 166 167 168 static gboolean 169 parse_margin (const char *name G_GNUC_UNUSED, 170 const char *arg, 171 gpointer data, 172 GError **error G_GNUC_UNUSED) 173 { 174 view_options_t *view_opts = (view_options_t *) data; 175 view_options_t::margin_t &m = view_opts->margin; 176 switch (sscanf (arg, "%lf %lf %lf %lf", &m.t, &m.r, &m.b, &m.l)) { 177 case 1: m.r = m.t; 178 case 2: m.b = m.t; 179 case 3: m.l = m.r; 180 case 4: return true; 181 default: 182 g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE, 183 "%s argument should be one to four space-separated numbers", 184 name); 185 return false; 186 } 187 } 188 189 190 static gboolean 191 parse_shapers (const char *name G_GNUC_UNUSED, 192 const char *arg, 193 gpointer data, 194 GError **error G_GNUC_UNUSED) 195 { 196 shape_options_t *shape_opts = (shape_options_t *) data; 197 g_strfreev (shape_opts->shapers); 198 shape_opts->shapers = g_strsplit (arg, ",", 0); 199 return true; 200 } 201 202 static G_GNUC_NORETURN gboolean 203 list_shapers (const char *name G_GNUC_UNUSED, 204 const char *arg G_GNUC_UNUSED, 205 gpointer data G_GNUC_UNUSED, 206 GError **error G_GNUC_UNUSED) 207 { 208 for (const char **shaper = hb_shape_list_shapers (); *shaper; shaper++) 209 g_printf ("%s\n", *shaper); 210 211 exit(0); 212 } 213 214 215 static gboolean 216 parse_features (const char *name G_GNUC_UNUSED, 217 const char *arg, 218 gpointer data, 219 GError **error G_GNUC_UNUSED) 220 { 221 shape_options_t *shape_opts = (shape_options_t *) data; 222 char *s = (char *) arg; 223 char *p; 224 225 shape_opts->num_features = 0; 226 g_free (shape_opts->features); 227 shape_opts->features = NULL; 228 229 if (!*s) 230 return true; 231 232 /* count the features first, so we can allocate memory */ 233 p = s; 234 do { 235 shape_opts->num_features++; 236 p = strchr (p, ','); 237 if (p) 238 p++; 239 } while (p); 240 241 shape_opts->features = (hb_feature_t *) calloc (shape_opts->num_features, sizeof (*shape_opts->features)); 242 243 /* now do the actual parsing */ 244 p = s; 245 shape_opts->num_features = 0; 246 while (p && *p) { 247 char *end = strchr (p, ','); 248 if (hb_feature_from_string (p, end ? end - p : -1, &shape_opts->features[shape_opts->num_features])) 249 shape_opts->num_features++; 250 p = end ? end + 1 : NULL; 251 } 252 253 return true; 254 } 255 256 257 void 258 view_options_t::add_options (option_parser_t *parser) 259 { 260 GOptionEntry entries[] = 261 { 262 {"annotate", 0, 0, G_OPTION_ARG_NONE, &this->annotate, "Annotate output rendering", NULL}, 263 {"background", 0, 0, G_OPTION_ARG_STRING, &this->back, "Set background color (default: " DEFAULT_BACK ")", "rrggbb/rrggbbaa"}, 264 {"foreground", 0, 0, G_OPTION_ARG_STRING, &this->fore, "Set foreground color (default: " DEFAULT_FORE ")", "rrggbb/rrggbbaa"}, 265 {"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &this->line_space, "Set space between lines (default: 0)", "units"}, 266 {"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin, "Margin around output (default: " G_STRINGIFY(DEFAULT_MARGIN) ")","one to four numbers"}, 267 {"font-size", 0, 0, G_OPTION_ARG_DOUBLE, &this->font_size, "Font size (default: " G_STRINGIFY(DEFAULT_FONT_SIZE) ")","size"}, 268 {NULL} 269 }; 270 parser->add_group (entries, 271 "view", 272 "View options:", 273 "Options controlling output rendering", 274 this); 275 } 276 277 void 278 shape_options_t::add_options (option_parser_t *parser) 279 { 280 GOptionEntry entries[] = 281 { 282 {"list-shapers", 0, G_OPTION_FLAG_NO_ARG, 283 G_OPTION_ARG_CALLBACK, (gpointer) &list_shapers, "List available shapers and quit", NULL}, 284 {"shaper", 0, G_OPTION_FLAG_HIDDEN, 285 G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Hidden duplicate of --shapers", NULL}, 286 {"shapers", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Set comma-separated list of shapers to try","list"}, 287 {"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction, "Set text direction (default: auto)", "ltr/rtl/ttb/btt"}, 288 {"language", 0, 0, G_OPTION_ARG_STRING, &this->language, "Set text language (default: $LANG)", "langstr"}, 289 {"script", 0, 0, G_OPTION_ARG_STRING, &this->script, "Set text script (default: auto)", "ISO-15924 tag"}, 290 {"bot", 0, 0, G_OPTION_ARG_NONE, &this->bot, "Treat text as beginning-of-paragraph", NULL}, 291 {"eot", 0, 0, G_OPTION_ARG_NONE, &this->eot, "Treat text as end-of-paragraph", NULL}, 292 {"preserve-default-ignorables",0, 0, G_OPTION_ARG_NONE, &this->preserve_default_ignorables, "Preserve Default-Ignorable characters", NULL}, 293 {"utf8-clusters", 0, 0, G_OPTION_ARG_NONE, &this->utf8_clusters, "Use UTF8 byte indices, not char indices", NULL}, 294 {"normalize-glyphs",0, 0, G_OPTION_ARG_NONE, &this->normalize_glyphs, "Rearrange glyph clusters in nominal order", NULL}, 295 {"num-iterations", 0, 0, G_OPTION_ARG_INT, &this->num_iterations, "Run shaper N times (default: 1)", "N"}, 296 {NULL} 297 }; 298 parser->add_group (entries, 299 "shape", 300 "Shape options:", 301 "Options controlling the shaping process", 302 this); 303 304 const gchar *features_help = "Comma-separated list of font features\n" 305 "\n" 306 " Features can be enabled or disabled, either globally or limited to\n" 307 " specific character ranges. The format for specifying feature settings\n" 308 " follows. All valid CSS font-feature-settings values other than 'normal'\n" 309 " and 'inherited' are also accepted, though, not documented below.\n" 310 "\n" 311 " The range indices refer to the positions between Unicode characters,\n" 312 " unless the --utf8-clusters is provided, in which case range indices\n" 313 " refer to UTF-8 byte indices. The position before the first character\n" 314 " is always 0.\n" 315 "\n" 316 " The format is Python-esque. Here is how it all works:\n" 317 "\n" 318 " Syntax: Value: Start: End:\n" 319 "\n" 320 " Setting value:\n" 321 " \"kern\" 1 0 # Turn feature on\n" 322 " \"+kern\" 1 0 # Turn feature on\n" 323 " \"-kern\" 0 0 # Turn feature off\n" 324 " \"kern=0\" 0 0 # Turn feature off\n" 325 " \"kern=1\" 1 0 # Turn feature on\n" 326 " \"aalt=2\" 2 0 # Choose 2nd alternate\n" 327 "\n" 328 " Setting index:\n" 329 " \"kern[]\" 1 0 # Turn feature on\n" 330 " \"kern[:]\" 1 0 # Turn feature on\n" 331 " \"kern[5:]\" 1 5 # Turn feature on, partial\n" 332 " \"kern[:5]\" 1 0 5 # Turn feature on, partial\n" 333 " \"kern[3:5]\" 1 3 5 # Turn feature on, range\n" 334 " \"kern[3]\" 1 3 3+1 # Turn feature on, single char\n" 335 "\n" 336 " Mixing it all:\n" 337 "\n" 338 " \"aalt[3:5]=2\" 2 3 5 # Turn 2nd alternate on for range"; 339 340 GOptionEntry entries2[] = 341 { 342 {"features", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_features, features_help, "list"}, 343 {NULL} 344 }; 345 parser->add_group (entries2, 346 "features", 347 "Features options:", 348 "Options controlling font features used", 349 this); 350 } 351 352 void 353 font_options_t::add_options (option_parser_t *parser) 354 { 355 char *text = NULL; 356 357 { 358 ASSERT_STATIC (ARRAY_LENGTH_CONST (supported_font_funcs) > 0); 359 GString *s = g_string_new (NULL); 360 g_string_printf (s, "Set font functions implementation to use (default: %s)\n\n Supported font function implementations are: %s", 361 supported_font_funcs[0].name, 362 supported_font_funcs[0].name); 363 for (unsigned int i = 1; i < ARRAY_LENGTH (supported_font_funcs); i++) 364 { 365 g_string_append_c (s, '/'); 366 g_string_append (s, supported_font_funcs[i].name); 367 } 368 text = g_string_free (s, FALSE); 369 parser->free_later (text); 370 } 371 372 GOptionEntry entries[] = 373 { 374 {"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"}, 375 {"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"}, 376 {"font-funcs", 0, 0, G_OPTION_ARG_STRING, &this->font_funcs, text, "format"}, 377 {NULL} 378 }; 379 parser->add_group (entries, 380 "font", 381 "Font options:", 382 "Options controlling the font", 383 this); 384 } 385 386 void 387 text_options_t::add_options (option_parser_t *parser) 388 { 389 GOptionEntry entries[] = 390 { 391 {"text", 0, 0, G_OPTION_ARG_STRING, &this->text, "Set input text", "string"}, 392 {"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"}, 393 {"text-before", 0, 0, G_OPTION_ARG_STRING, &this->text_before, "Set text context before each line", "string"}, 394 {"text-after", 0, 0, G_OPTION_ARG_STRING, &this->text_after, "Set text context after each line", "string"}, 395 {NULL} 396 }; 397 parser->add_group (entries, 398 "text", 399 "Text options:", 400 "Options controlling the input text", 401 this); 402 } 403 404 void 405 output_options_t::add_options (option_parser_t *parser) 406 { 407 const char *text; 408 409 if (NULL == supported_formats) 410 text = "Set output format"; 411 else 412 { 413 char *items = g_strjoinv ("/", const_cast<char **> (supported_formats)); 414 text = g_strdup_printf ("Set output format\n\n Supported output formats are: %s", items); 415 g_free (items); 416 parser->free_later ((char *) text); 417 } 418 419 GOptionEntry entries[] = 420 { 421 {"output-file", 0, 0, G_OPTION_ARG_STRING, &this->output_file, "Set output file-name (default: stdout)","filename"}, 422 {"output-format", 0, 0, G_OPTION_ARG_STRING, &this->output_format, text, "format"}, 423 {NULL} 424 }; 425 parser->add_group (entries, 426 "output", 427 "Output options:", 428 "Options controlling the output", 429 this); 430 } 431 432 433 434 hb_font_t * 435 font_options_t::get_font (void) const 436 { 437 if (font) 438 return font; 439 440 hb_blob_t *blob = NULL; 441 442 /* Create the blob */ 443 { 444 char *font_data; 445 unsigned int len = 0; 446 hb_destroy_func_t destroy; 447 void *user_data; 448 hb_memory_mode_t mm; 449 450 /* This is a hell of a lot of code for just reading a file! */ 451 if (!font_file) 452 fail (true, "No font file set"); 453 454 if (0 == strcmp (font_file, "-")) { 455 /* read it */ 456 GString *gs = g_string_new (NULL); 457 char buf[BUFSIZ]; 458 #if defined(_WIN32) || defined(__CYGWIN__) 459 setmode (fileno (stdin), _O_BINARY); 460 #endif 461 while (!feof (stdin)) { 462 size_t ret = fread (buf, 1, sizeof (buf), stdin); 463 if (ferror (stdin)) 464 fail (false, "Failed reading font from standard input: %s", 465 strerror (errno)); 466 g_string_append_len (gs, buf, ret); 467 } 468 len = gs->len; 469 font_data = g_string_free (gs, false); 470 user_data = font_data; 471 destroy = (hb_destroy_func_t) g_free; 472 mm = HB_MEMORY_MODE_WRITABLE; 473 } else { 474 GError *error = NULL; 475 GMappedFile *mf = g_mapped_file_new (font_file, false, &error); 476 if (mf) { 477 font_data = g_mapped_file_get_contents (mf); 478 len = g_mapped_file_get_length (mf); 479 if (len) { 480 destroy = (hb_destroy_func_t) g_mapped_file_unref; 481 user_data = (void *) mf; 482 mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE; 483 } else 484 g_mapped_file_unref (mf); 485 } else { 486 fail (false, "%s", error->message); 487 //g_error_free (error); 488 } 489 if (!len) { 490 /* GMappedFile is buggy, it doesn't fail if file isn't regular. 491 * Try reading. 492 * https://bugzilla.gnome.org/show_bug.cgi?id=659212 */ 493 GError *error = NULL; 494 gsize l; 495 if (g_file_get_contents (font_file, &font_data, &l, &error)) { 496 len = l; 497 destroy = (hb_destroy_func_t) g_free; 498 user_data = (void *) font_data; 499 mm = HB_MEMORY_MODE_WRITABLE; 500 } else { 501 fail (false, "%s", error->message); 502 //g_error_free (error); 503 } 504 } 505 } 506 507 blob = hb_blob_create (font_data, len, mm, user_data, destroy); 508 } 509 510 /* Create the face */ 511 hb_face_t *face = hb_face_create (blob, face_index); 512 hb_blob_destroy (blob); 513 514 515 font = hb_font_create (face); 516 517 unsigned int upem = hb_face_get_upem (face); 518 hb_font_set_scale (font, upem, upem); 519 hb_face_destroy (face); 520 521 void (*set_font_funcs) (hb_font_t *) = NULL; 522 if (!font_funcs) 523 { 524 set_font_funcs = supported_font_funcs[0].func; 525 } 526 else 527 { 528 for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++) 529 if (0 == strcasecmp (font_funcs, supported_font_funcs[i].name)) 530 { 531 set_font_funcs = supported_font_funcs[i].func; 532 break; 533 } 534 if (!set_font_funcs) 535 { 536 GString *s = g_string_new (NULL); 537 for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++) 538 { 539 if (i) 540 g_string_append_c (s, '/'); 541 g_string_append (s, supported_font_funcs[i].name); 542 } 543 char *p = g_string_free (s, FALSE); 544 fail (false, "Unknown font function implementation `%s'; supported values are: %s; default is %s", 545 font_funcs, 546 p, 547 supported_font_funcs[0].name); 548 //free (p); 549 } 550 } 551 set_font_funcs (font); 552 553 return font; 554 } 555 556 557 const char * 558 text_options_t::get_line (unsigned int *len) 559 { 560 if (text) { 561 if (text_len == (unsigned int) -1) 562 text_len = strlen (text); 563 564 if (!text_len) { 565 *len = 0; 566 return NULL; 567 } 568 569 const char *ret = text; 570 const char *p = (const char *) memchr (text, '\n', text_len); 571 unsigned int ret_len; 572 if (!p) { 573 ret_len = text_len; 574 text += ret_len; 575 text_len = 0; 576 } else { 577 ret_len = p - ret; 578 text += ret_len + 1; 579 text_len -= ret_len + 1; 580 } 581 582 *len = ret_len; 583 return ret; 584 } 585 586 if (!fp) { 587 if (!text_file) 588 fail (true, "At least one of text or text-file must be set"); 589 590 if (0 != strcmp (text_file, "-")) 591 fp = fopen (text_file, "r"); 592 else 593 fp = stdin; 594 595 if (!fp) 596 fail (false, "Failed opening text file `%s': %s", 597 text_file, strerror (errno)); 598 599 gs = g_string_new (NULL); 600 } 601 602 g_string_set_size (gs, 0); 603 char buf[BUFSIZ]; 604 while (fgets (buf, sizeof (buf), fp)) { 605 unsigned int bytes = strlen (buf); 606 if (bytes && buf[bytes - 1] == '\n') { 607 bytes--; 608 g_string_append_len (gs, buf, bytes); 609 break; 610 } 611 g_string_append_len (gs, buf, bytes); 612 } 613 if (ferror (fp)) 614 fail (false, "Failed reading text: %s", 615 strerror (errno)); 616 *len = gs->len; 617 return !*len && feof (fp) ? NULL : gs->str; 618 } 619 620 621 FILE * 622 output_options_t::get_file_handle (void) 623 { 624 if (fp) 625 return fp; 626 627 if (output_file) 628 fp = fopen (output_file, "wb"); 629 else { 630 #if defined(_WIN32) || defined(__CYGWIN__) 631 setmode (fileno (stdout), _O_BINARY); 632 #endif 633 fp = stdout; 634 } 635 if (!fp) 636 fail (false, "Cannot open output file `%s': %s", 637 g_filename_display_name (output_file), strerror (errno)); 638 639 return fp; 640 } 641 642 static gboolean 643 parse_verbose (const char *name G_GNUC_UNUSED, 644 const char *arg G_GNUC_UNUSED, 645 gpointer data G_GNUC_UNUSED, 646 GError **error G_GNUC_UNUSED) 647 { 648 format_options_t *format_opts = (format_options_t *) data; 649 format_opts->show_text = format_opts->show_unicode = format_opts->show_line_num = true; 650 return true; 651 } 652 653 void 654 format_options_t::add_options (option_parser_t *parser) 655 { 656 GOptionEntry entries[] = 657 { 658 {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_glyph_names, "Use glyph indices instead of names", NULL}, 659 {"no-positions", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_positions, "Do not show glyph positions", NULL}, 660 {"no-clusters", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_clusters, "Do not show cluster mapping", NULL}, 661 {"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Show input text", NULL}, 662 {"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Show input Unicode codepoints", NULL}, 663 {"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Show line numbers", NULL}, 664 {"verbose", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,(gpointer) &parse_verbose, "Show everything", NULL}, 665 {NULL} 666 }; 667 parser->add_group (entries, 668 "format", 669 "Format options:", 670 "Options controlling the formatting of buffer contents", 671 this); 672 } 673 674 void 675 format_options_t::serialize_unicode (hb_buffer_t *buffer, 676 GString *gs) 677 { 678 unsigned int num_glyphs = hb_buffer_get_length (buffer); 679 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL); 680 681 g_string_append_c (gs, '<'); 682 for (unsigned int i = 0; i < num_glyphs; i++) 683 { 684 if (i) 685 g_string_append_c (gs, ','); 686 g_string_append_printf (gs, "U+%04X", info->codepoint); 687 info++; 688 } 689 g_string_append_c (gs, '>'); 690 } 691 692 void 693 format_options_t::serialize_glyphs (hb_buffer_t *buffer, 694 hb_font_t *font, 695 hb_buffer_serialize_format_t output_format, 696 hb_buffer_serialize_flags_t flags, 697 GString *gs) 698 { 699 g_string_append_c (gs, '['); 700 unsigned int num_glyphs = hb_buffer_get_length (buffer); 701 unsigned int start = 0; 702 703 while (start < num_glyphs) { 704 char buf[1024]; 705 unsigned int consumed; 706 start += hb_buffer_serialize_glyphs (buffer, start, num_glyphs, 707 buf, sizeof (buf), &consumed, 708 font, output_format, flags); 709 if (!consumed) 710 break; 711 g_string_append (gs, buf); 712 } 713 g_string_append_c (gs, ']'); 714 } 715 void 716 format_options_t::serialize_line_no (unsigned int line_no, 717 GString *gs) 718 { 719 if (show_line_num) 720 g_string_append_printf (gs, "%d: ", line_no); 721 } 722 void 723 format_options_t::serialize_buffer_of_text (hb_buffer_t *buffer, 724 unsigned int line_no, 725 const char *text, 726 unsigned int text_len, 727 hb_font_t *font, 728 GString *gs) 729 { 730 if (show_text) { 731 serialize_line_no (line_no, gs); 732 g_string_append_c (gs, '('); 733 g_string_append_len (gs, text, text_len); 734 g_string_append_c (gs, ')'); 735 g_string_append_c (gs, '\n'); 736 } 737 738 if (show_unicode) { 739 serialize_line_no (line_no, gs); 740 serialize_unicode (buffer, gs); 741 g_string_append_c (gs, '\n'); 742 } 743 } 744 void 745 format_options_t::serialize_message (unsigned int line_no, 746 const char *msg, 747 GString *gs) 748 { 749 serialize_line_no (line_no, gs); 750 g_string_append_printf (gs, "%s", msg); 751 g_string_append_c (gs, '\n'); 752 } 753 void 754 format_options_t::serialize_buffer_of_glyphs (hb_buffer_t *buffer, 755 unsigned int line_no, 756 const char *text, 757 unsigned int text_len, 758 hb_font_t *font, 759 hb_buffer_serialize_format_t output_format, 760 hb_buffer_serialize_flags_t format_flags, 761 GString *gs) 762 { 763 serialize_line_no (line_no, gs); 764 serialize_glyphs (buffer, font, output_format, format_flags, gs); 765 g_string_append_c (gs, '\n'); 766 } 767
