options.cc revision 30874b4819a99cc84fa39e794266685e1b8735d2
1/* 2 * Copyright © 2011 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 34void 35fail (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 51hb_bool_t debug = FALSE; 52 53static gchar * 54shapers_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 68static G_GNUC_NORETURN gboolean 69show_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 86void 87option_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 99static gboolean 100pre_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 110static gboolean 111post_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 121void 122option_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 135void 136option_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 152static gboolean 153parse_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 174static gboolean 175parse_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 shape_opts->shapers = g_strsplit (arg, ",", 0); 182 return TRUE; 183} 184 185static G_GNUC_NORETURN gboolean 186list_shapers (const char *name G_GNUC_UNUSED, 187 const char *arg G_GNUC_UNUSED, 188 gpointer data G_GNUC_UNUSED, 189 GError **error G_GNUC_UNUSED) 190{ 191 for (const char **shaper = hb_shape_list_shapers (); *shaper; shaper++) 192 g_printf ("%s\n", *shaper); 193 194 exit(0); 195} 196 197 198 199static void 200parse_space (char **pp) 201{ 202 char c; 203#define ISSPACE(c) ((c)==' '||(c)=='\f'||(c)=='\n'||(c)=='\r'||(c)=='\t'||(c)=='\v') 204 while (c = **pp, ISSPACE (c)) 205 (*pp)++; 206#undef ISSPACE 207} 208 209static hb_bool_t 210parse_char (char **pp, char c) 211{ 212 parse_space (pp); 213 214 if (**pp != c) 215 return FALSE; 216 217 (*pp)++; 218 return TRUE; 219} 220 221static hb_bool_t 222parse_uint (char **pp, unsigned int *pv) 223{ 224 char *p = *pp; 225 unsigned int v; 226 227 v = strtol (p, pp, 0); 228 229 if (p == *pp) 230 return FALSE; 231 232 *pv = v; 233 return TRUE; 234} 235 236 237static hb_bool_t 238parse_feature_value_prefix (char **pp, hb_feature_t *feature) 239{ 240 if (parse_char (pp, '-')) 241 feature->value = 0; 242 else { 243 parse_char (pp, '+'); 244 feature->value = 1; 245 } 246 247 return TRUE; 248} 249 250static hb_bool_t 251parse_feature_tag (char **pp, hb_feature_t *feature) 252{ 253 char *p = *pp, c; 254 255 parse_space (pp); 256 257#define ISALNUM(c) (('a' <= (c) && (c) <= 'z') || ('A' <= (c) && (c) <= 'Z') || ('0' <= (c) && (c) <= '9')) 258 while (c = **pp, ISALNUM(c)) 259 (*pp)++; 260#undef ISALNUM 261 262 if (p == *pp) 263 return FALSE; 264 265 feature->tag = hb_tag_from_string (p, *pp - p); 266 return TRUE; 267} 268 269static hb_bool_t 270parse_feature_indices (char **pp, hb_feature_t *feature) 271{ 272 parse_space (pp); 273 274 hb_bool_t has_start; 275 276 feature->start = 0; 277 feature->end = (unsigned int) -1; 278 279 if (!parse_char (pp, '[')) 280 return TRUE; 281 282 has_start = parse_uint (pp, &feature->start); 283 284 if (parse_char (pp, ':')) { 285 parse_uint (pp, &feature->end); 286 } else { 287 if (has_start) 288 feature->end = feature->start + 1; 289 } 290 291 return parse_char (pp, ']'); 292} 293 294static hb_bool_t 295parse_feature_value_postfix (char **pp, hb_feature_t *feature) 296{ 297 return !parse_char (pp, '=') || parse_uint (pp, &feature->value); 298} 299 300 301static hb_bool_t 302parse_one_feature (char **pp, hb_feature_t *feature) 303{ 304 return parse_feature_value_prefix (pp, feature) && 305 parse_feature_tag (pp, feature) && 306 parse_feature_indices (pp, feature) && 307 parse_feature_value_postfix (pp, feature) && 308 (parse_char (pp, ',') || **pp == '\0'); 309} 310 311static void 312skip_one_feature (char **pp) 313{ 314 char *e; 315 e = strchr (*pp, ','); 316 if (e) 317 *pp = e + 1; 318 else 319 *pp = *pp + strlen (*pp); 320} 321 322static gboolean 323parse_features (const char *name G_GNUC_UNUSED, 324 const char *arg, 325 gpointer data, 326 GError **error G_GNUC_UNUSED) 327{ 328 shape_options_t *shape_opts = (shape_options_t *) data; 329 char *s = (char *) arg; 330 char *p; 331 332 shape_opts->num_features = 0; 333 shape_opts->features = NULL; 334 335 if (!*s) 336 return TRUE; 337 338 /* count the features first, so we can allocate memory */ 339 p = s; 340 do { 341 shape_opts->num_features++; 342 p = strchr (p, ','); 343 if (p) 344 p++; 345 } while (p); 346 347 shape_opts->features = (hb_feature_t *) calloc (shape_opts->num_features, sizeof (*shape_opts->features)); 348 349 /* now do the actual parsing */ 350 p = s; 351 shape_opts->num_features = 0; 352 while (*p) { 353 if (parse_one_feature (&p, &shape_opts->features[shape_opts->num_features])) 354 shape_opts->num_features++; 355 else 356 skip_one_feature (&p); 357 } 358 359 return TRUE; 360} 361 362 363void 364view_options_t::add_options (option_parser_t *parser) 365{ 366 GOptionEntry entries[] = 367 { 368 {"annotate", 0, 0, G_OPTION_ARG_NONE, &this->annotate, "Annotate output rendering", NULL}, 369 {"background", 0, 0, G_OPTION_ARG_STRING, &this->back, "Set background color (default: "DEFAULT_BACK")", "red/#rrggbb/#rrggbbaa"}, 370 {"foreground", 0, 0, G_OPTION_ARG_STRING, &this->fore, "Set foreground color (default: "DEFAULT_FORE")", "red/#rrggbb/#rrggbbaa"}, 371 {"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &this->line_space, "Set space between lines (default: 0)", "units"}, 372 {"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin, "Margin around output (default: "G_STRINGIFY(DEFAULT_MARGIN)")","one to four numbers"}, 373 {"font-size", 0, 0, G_OPTION_ARG_DOUBLE, &this->font_size, "Font size (default: "G_STRINGIFY(DEFAULT_FONT_SIZE)")","size"}, 374 {NULL} 375 }; 376 parser->add_group (entries, 377 "view", 378 "View options:", 379 "Options controlling output rendering", 380 this); 381} 382 383void 384shape_options_t::add_options (option_parser_t *parser) 385{ 386 GOptionEntry entries[] = 387 { 388 {"list-shapers", 0, G_OPTION_FLAG_NO_ARG, 389 G_OPTION_ARG_CALLBACK, (gpointer) &list_shapers, "List available shapers and quit", NULL}, 390 {"shapers", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_shapers, "Comma-separated list of shapers to try","list"}, 391 {"direction", 0, 0, G_OPTION_ARG_STRING, &this->direction, "Set text direction (default: auto)", "ltr/rtl/ttb/btt"}, 392 {"language", 0, 0, G_OPTION_ARG_STRING, &this->language, "Set text language (default: $LANG)", "langstr"}, 393 {"script", 0, 0, G_OPTION_ARG_STRING, &this->script, "Set text script (default: auto)", "ISO-15924 tag"}, 394 {"utf8-clusters", 0, 0, G_OPTION_ARG_NONE, &this->utf8_clusters, "Use UTF8 byte indices, not char indices", NULL}, 395 {NULL} 396 }; 397 parser->add_group (entries, 398 "shape", 399 "Shape options:", 400 "Options controlling the shaping process", 401 this); 402 403 const gchar *features_help = "Comma-separated list of font features\n" 404 "\n" 405 " Features can be enabled or disabled, either globally or limited to\n" 406 " specific character ranges.\n" 407 "\n" 408 " The range indices refer to the positions between Unicode characters,\n" 409 " unless the --utf8-clusters is provided, in which case range indices\n" 410 " refer to UTF-8 byte indices. The position before the first character\n" 411 " is always 0.\n" 412 "\n" 413 " The format is Python-esque. Here is how it all works:\n" 414 "\n" 415 " Syntax: Value: Start: End:\n" 416 "\n" 417 " Setting value:\n" 418 " \"kern\" 1 0 ∞ # Turn feature on\n" 419 " \"+kern\" 1 0 ∞ # Turn feature on\n" 420 " \"-kern\" 0 0 ∞ # Turn feature off\n" 421 " \"kern=0\" 0 0 ∞ # Turn feature off\n" 422 " \"kern=1\" 1 0 ∞ # Turn feature on\n" 423 " \"aalt=2\" 2 0 ∞ # Choose 2nd alternate\n" 424 "\n" 425 " Setting index:\n" 426 " \"kern[]\" 1 0 ∞ # Turn feature on\n" 427 " \"kern[:]\" 1 0 ∞ # Turn feature on\n" 428 " \"kern[5:]\" 1 5 ∞ # Turn feature on, partial\n" 429 " \"kern[:5]\" 1 0 5 # Turn feature on, partial\n" 430 " \"kern[3:5]\" 1 3 5 # Turn feature on, range\n" 431 " \"kern[3]\" 1 3 3+1 # Turn feature on, single char\n" 432 "\n" 433 " Mixing it all:\n" 434 "\n" 435 " \"kern[3:5]=0\" 1 3 5 # Turn feature off for range"; 436 437 GOptionEntry entries2[] = 438 { 439 {"features", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_features, features_help, "list"}, 440 {NULL} 441 }; 442 parser->add_group (entries2, 443 "features", 444 "Features options:", 445 "Options controlling font features used", 446 this); 447} 448 449void 450font_options_t::add_options (option_parser_t *parser) 451{ 452 GOptionEntry entries[] = 453 { 454 {"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Font file-name", "filename"}, 455 {"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Face index (default: 0)", "index"}, 456 {NULL} 457 }; 458 parser->add_group (entries, 459 "font", 460 "Font options:", 461 "Options controlling the font", 462 this); 463} 464 465void 466text_options_t::add_options (option_parser_t *parser) 467{ 468 GOptionEntry entries[] = 469 { 470 {"text", 0, 0, G_OPTION_ARG_STRING, &this->text, "Set input text", "string"}, 471 {"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.", "filename"}, 472 {NULL} 473 }; 474 parser->add_group (entries, 475 "text", 476 "Text options:", 477 "Options controlling the input text", 478 this); 479} 480 481void 482output_options_t::add_options (option_parser_t *parser) 483{ 484 GOptionEntry entries[] = 485 { 486 {"output-file", 0, 0, G_OPTION_ARG_STRING, &this->output_file, "Set output file-name (default: stdout)","filename"}, 487 {"output-format", 0, 0, G_OPTION_ARG_STRING, &this->output_format, "Set output format", "format"}, 488 {NULL} 489 }; 490 parser->add_group (entries, 491 "output", 492 "Output options:", 493 "Options controlling the output", 494 this); 495} 496 497 498 499hb_font_t * 500font_options_t::get_font (void) const 501{ 502 if (font) 503 return font; 504 505 hb_blob_t *blob = NULL; 506 507 /* Create the blob */ 508 { 509 char *font_data; 510 unsigned int len = 0; 511 hb_destroy_func_t destroy; 512 void *user_data; 513 hb_memory_mode_t mm; 514 515 /* This is a hell of a lot of code for just reading a file! */ 516 if (!font_file) 517 fail (TRUE, "No font file set"); 518 519 if (0 == strcmp (font_file, "-")) { 520 /* read it */ 521 GString *gs = g_string_new (NULL); 522 char buf[BUFSIZ]; 523#ifdef HAVE__SETMODE 524 _setmode (fileno (stdin), _O_BINARY); 525#endif 526 while (!feof (stdin)) { 527 size_t ret = fread (buf, 1, sizeof (buf), stdin); 528 if (ferror (stdin)) 529 fail (FALSE, "Failed reading font from standard input: %s", 530 strerror (errno)); 531 g_string_append_len (gs, buf, ret); 532 } 533 len = gs->len; 534 font_data = g_string_free (gs, FALSE); 535 user_data = font_data; 536 destroy = (hb_destroy_func_t) g_free; 537 mm = HB_MEMORY_MODE_WRITABLE; 538 } else { 539 GError *error = NULL; 540 GMappedFile *mf = g_mapped_file_new (font_file, FALSE, &error); 541 if (mf) { 542 font_data = g_mapped_file_get_contents (mf); 543 len = g_mapped_file_get_length (mf); 544 if (len) { 545 destroy = (hb_destroy_func_t) g_mapped_file_unref; 546 user_data = (void *) mf; 547 mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE; 548 } else 549 g_mapped_file_unref (mf); 550 } else { 551 fail (FALSE, "%s", error->message); 552 //g_error_free (error); 553 } 554 if (!len) { 555 /* GMappedFile is buggy, it doesn't fail if file isn't regular. 556 * Try reading. 557 * https://bugzilla.gnome.org/show_bug.cgi?id=659212 */ 558 GError *error = NULL; 559 gsize l; 560 if (g_file_get_contents (font_file, &font_data, &l, &error)) { 561 len = l; 562 destroy = (hb_destroy_func_t) g_free; 563 user_data = (void *) font_data; 564 mm = HB_MEMORY_MODE_WRITABLE; 565 } else { 566 fail (FALSE, "%s", error->message); 567 //g_error_free (error); 568 } 569 } 570 } 571 572 blob = hb_blob_create (font_data, len, mm, user_data, destroy); 573 } 574 575 /* Create the face */ 576 hb_face_t *face = hb_face_create (blob, face_index); 577 hb_blob_destroy (blob); 578 579 580 font = hb_font_create (face); 581 582 unsigned int upem = hb_face_get_upem (face); 583 hb_font_set_scale (font, upem, upem); 584 hb_face_destroy (face); 585 586#ifdef HAVE_FREETYPE 587 hb_ft_font_set_funcs (font); 588#endif 589 590 return font; 591} 592 593 594const char * 595text_options_t::get_line (unsigned int *len) 596{ 597 if (text) { 598 if (text_len == (unsigned int) -1) 599 text_len = strlen (text); 600 601 if (!text_len) { 602 *len = 0; 603 return NULL; 604 } 605 606 const char *ret = text; 607 const char *p = (const char *) memchr (text, '\n', text_len); 608 unsigned int ret_len; 609 if (!p) { 610 ret_len = text_len; 611 text += ret_len; 612 text_len = 0; 613 } else { 614 ret_len = p - ret; 615 text += ret_len + 1; 616 text_len -= ret_len + 1; 617 } 618 619 *len = ret_len; 620 return ret; 621 } 622 623 if (!fp) { 624 if (!text_file) 625 fail (TRUE, "At least one of text or text-file must be set"); 626 627 if (0 != strcmp (text_file, "-")) 628 fp = fopen (text_file, "r"); 629 else 630 fp = stdin; 631 632 if (!fp) 633 fail (FALSE, "Failed opening text file `%s': %s", 634 text_file, strerror (errno)); 635 636 gs = g_string_new (NULL); 637 } 638 639 g_string_set_size (gs, 0); 640 char buf[BUFSIZ]; 641 while (fgets (buf, sizeof (buf), fp)) { 642 unsigned int bytes = strlen (buf); 643 if (bytes && buf[bytes - 1] == '\n') { 644 bytes--; 645 g_string_append_len (gs, buf, bytes); 646 break; 647 } 648 g_string_append_len (gs, buf, bytes); 649 } 650 if (ferror (fp)) 651 fail (FALSE, "Failed reading text: %s", 652 strerror (errno)); 653 *len = gs->len; 654 return !*len && feof (fp) ? NULL : gs->str; 655} 656 657 658FILE * 659output_options_t::get_file_handle (void) 660{ 661 if (fp) 662 return fp; 663 664 if (output_file) 665 fp = fopen (output_file, "wb"); 666 else { 667#ifdef HAVE__SETMODE 668 _setmode (fileno (stdout), _O_BINARY); 669#endif 670 fp = stdout; 671 } 672 if (!fp) 673 fail (FALSE, "Cannot open output file `%s': %s", 674 g_filename_display_name (output_file), strerror (errno)); 675 676 return fp; 677} 678 679 680void 681format_options_t::add_options (option_parser_t *parser) 682{ 683 GOptionEntry entries[] = 684 { 685 {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_glyph_names, "Use glyph indices instead of names", NULL}, 686 {"no-positions", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_positions, "Do not show glyph positions", NULL}, 687 {"no-clusters", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_clusters, "Do not show cluster mapping", NULL}, 688 {"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Show input text", NULL}, 689 {"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Show input Unicode codepoints", NULL}, 690 {"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Show line numbers", NULL}, 691 {NULL} 692 }; 693 parser->add_group (entries, 694 "format", 695 "Format options:", 696 "Options controlling the formatting of buffer contents", 697 this); 698} 699 700void 701format_options_t::serialize_unicode (hb_buffer_t *buffer, 702 GString *gs) 703{ 704 unsigned int num_glyphs = hb_buffer_get_length (buffer); 705 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL); 706 707 g_string_append_c (gs, '<'); 708 for (unsigned int i = 0; i < num_glyphs; i++) 709 { 710 if (i) 711 g_string_append_c (gs, ','); 712 g_string_append_printf (gs, "U+%04X", info->codepoint); 713 info++; 714 } 715 g_string_append_c (gs, '>'); 716} 717 718void 719format_options_t::serialize_glyphs (hb_buffer_t *buffer, 720 hb_font_t *font, 721 hb_bool_t utf8_clusters, 722 GString *gs) 723{ 724 FT_Face ft_face = show_glyph_names ? hb_ft_font_get_face (font) : NULL; 725 726 unsigned int num_glyphs = hb_buffer_get_length (buffer); 727 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL); 728 hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, NULL); 729 730 g_string_append_c (gs, '['); 731 for (unsigned int i = 0; i < num_glyphs; i++) 732 { 733 if (i) 734 g_string_append_c (gs, '|'); 735 736 char glyph_name[30]; 737 if (show_glyph_names) { 738 if (!FT_Get_Glyph_Name (ft_face, info->codepoint, glyph_name, sizeof (glyph_name))) 739 g_string_append_printf (gs, "%s", glyph_name); 740 else 741 g_string_append_printf (gs, "gid%u", info->codepoint); 742 } else 743 g_string_append_printf (gs, "%u", info->codepoint); 744 745 if (show_clusters) { 746 g_string_append_printf (gs, "=%u", info->cluster); 747 if (utf8_clusters) 748 g_string_append (gs, "u8"); 749 } 750 751 if (show_positions && (pos->x_offset || pos->y_offset)) { 752 g_string_append_c (gs, '@'); 753 if (pos->x_offset) g_string_append_printf (gs, "%d", pos->x_offset); 754 if (pos->y_offset) g_string_append_printf (gs, ",%d", pos->y_offset); 755 } 756 if (show_positions && (pos->x_advance || pos->y_advance)) { 757 g_string_append_c (gs, '+'); 758 if (pos->x_advance) g_string_append_printf (gs, "%d", pos->x_advance); 759 if (pos->y_advance) g_string_append_printf (gs, ",%d", pos->y_advance); 760 } 761 762 info++; 763 pos++; 764 } 765 g_string_append_c (gs, ']'); 766} 767void 768format_options_t::serialize_line_no (unsigned int line_no, 769 GString *gs) 770{ 771 if (show_line_num) 772 g_string_append_printf (gs, "%d: ", line_no); 773} 774void 775format_options_t::serialize_line (hb_buffer_t *buffer, 776 unsigned int line_no, 777 const char *text, 778 unsigned int text_len, 779 hb_font_t *font, 780 hb_bool_t utf8_clusters, 781 GString *gs) 782{ 783 if (show_text) { 784 serialize_line_no (line_no, gs); 785 g_string_append_c (gs, '('); 786 g_string_append_len (gs, text, text_len); 787 g_string_append_c (gs, ')'); 788 g_string_append_c (gs, '\n'); 789 } 790 791 if (show_unicode) { 792 serialize_line_no (line_no, gs); 793 hb_buffer_reset (scratch); 794 hb_buffer_add_utf8 (scratch, text, text_len, 0, -1); 795 serialize_unicode (scratch, gs); 796 g_string_append_c (gs, '\n'); 797 } 798 799 serialize_line_no (line_no, gs); 800 serialize_glyphs (buffer, font, utf8_clusters, gs); 801 g_string_append_c (gs, '\n'); 802} 803