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 36struct 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 50void 51fail (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 68hb_bool_t debug = false; 69 70static gchar * 71shapers_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 85static G_GNUC_NORETURN gboolean 86show_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 103void 104option_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 116static gboolean 117pre_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 127static gboolean 128post_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 138void 139option_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 152void 153option_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 169static gboolean 170parse_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 191static gboolean 192parse_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 203static G_GNUC_NORETURN gboolean 204list_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 216static gboolean 217parse_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 258void 259view_options_t::add_options (option_parser_t *parser) 260{ 261 GOptionEntry entries[] = 262 { 263 {"annotate", 0, 0, G_OPTION_ARG_NONE, &this->annotate, "Annotate output rendering", NULL}, 264 {"background", 0, 0, G_OPTION_ARG_STRING, &this->back, "Set background color (default: " DEFAULT_BACK ")", "rrggbb/rrggbbaa"}, 265 {"foreground", 0, 0, G_OPTION_ARG_STRING, &this->fore, "Set foreground color (default: " DEFAULT_FORE ")", "rrggbb/rrggbbaa"}, 266 {"line-space", 0, 0, G_OPTION_ARG_DOUBLE, &this->line_space, "Set space between lines (default: 0)", "units"}, 267 {"margin", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_margin, "Margin around output (default: " G_STRINGIFY(DEFAULT_MARGIN) ")","one to four numbers"}, 268 {NULL} 269 }; 270 parser->add_group (entries, 271 "view", 272 "View options:", 273 "Options controlling output rendering", 274 this); 275} 276 277void 278shape_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 352static gboolean 353parse_font_size (const char *name G_GNUC_UNUSED, 354 const char *arg, 355 gpointer data, 356 GError **error G_GNUC_UNUSED) 357{ 358 font_options_t *font_opts = (font_options_t *) data; 359 if (0 == strcmp (arg, "upem")) 360 { 361 font_opts->font_size_y = font_opts->font_size_x = FONT_SIZE_UPEM; 362 return true; 363 } 364 switch (sscanf (arg, "%lf %lf", &font_opts->font_size_x, &font_opts->font_size_y)) { 365 case 1: font_opts->font_size_y = font_opts->font_size_x; 366 case 2: return true; 367 default: 368 g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE, 369 "%s argument should be one to four space-separated numbers", 370 name); 371 return false; 372 } 373} 374void 375font_options_t::add_options (option_parser_t *parser) 376{ 377 char *text = NULL; 378 379 { 380 ASSERT_STATIC (ARRAY_LENGTH_CONST (supported_font_funcs) > 0); 381 GString *s = g_string_new (NULL); 382 g_string_printf (s, "Set font functions implementation to use (default: %s)\n\n Supported font function implementations are: %s", 383 supported_font_funcs[0].name, 384 supported_font_funcs[0].name); 385 for (unsigned int i = 1; i < ARRAY_LENGTH (supported_font_funcs); i++) 386 { 387 g_string_append_c (s, '/'); 388 g_string_append (s, supported_font_funcs[i].name); 389 } 390 text = g_string_free (s, FALSE); 391 parser->free_later (text); 392 } 393 394 char *font_size_text; 395 if (default_font_size == FONT_SIZE_UPEM) 396 font_size_text = (char *) "Font size (default: upem)"; 397 else 398 { 399 font_size_text = g_strdup_printf ("Font size (default: %d)", default_font_size); 400 parser->free_later (font_size_text); 401 } 402 403 GOptionEntry entries[] = 404 { 405 {"font-file", 0, 0, G_OPTION_ARG_STRING, &this->font_file, "Set font file-name", "filename"}, 406 {"face-index", 0, 0, G_OPTION_ARG_INT, &this->face_index, "Set face index (default: 0)", "index"}, 407 {"font-size", 0, default_font_size ? 0 : G_OPTION_FLAG_HIDDEN, 408 G_OPTION_ARG_CALLBACK, (gpointer) &parse_font_size, font_size_text, "1/2 numbers or 'upem'"}, 409 {"font-funcs", 0, 0, G_OPTION_ARG_STRING, &this->font_funcs, text, "impl"}, 410 {NULL} 411 }; 412 parser->add_group (entries, 413 "font", 414 "Font options:", 415 "Options controlling the font", 416 this); 417} 418 419void 420text_options_t::add_options (option_parser_t *parser) 421{ 422 GOptionEntry entries[] = 423 { 424 {"text", 0, 0, G_OPTION_ARG_STRING, &this->text, "Set input text", "string"}, 425 {"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"}, 426 {"text-before", 0, 0, G_OPTION_ARG_STRING, &this->text_before, "Set text context before each line", "string"}, 427 {"text-after", 0, 0, G_OPTION_ARG_STRING, &this->text_after, "Set text context after each line", "string"}, 428 {NULL} 429 }; 430 parser->add_group (entries, 431 "text", 432 "Text options:", 433 "Options controlling the input text", 434 this); 435} 436 437void 438output_options_t::add_options (option_parser_t *parser) 439{ 440 const char *text; 441 442 if (NULL == supported_formats) 443 text = "Set output format"; 444 else 445 { 446 char *items = g_strjoinv ("/", const_cast<char **> (supported_formats)); 447 text = g_strdup_printf ("Set output format\n\n Supported output formats are: %s", items); 448 g_free (items); 449 parser->free_later ((char *) text); 450 } 451 452 GOptionEntry entries[] = 453 { 454 {"output-file", 0, 0, G_OPTION_ARG_STRING, &this->output_file, "Set output file-name (default: stdout)","filename"}, 455 {"output-format", 0, 0, G_OPTION_ARG_STRING, &this->output_format, text, "format"}, 456 {NULL} 457 }; 458 parser->add_group (entries, 459 "output", 460 "Output options:", 461 "Options controlling the output", 462 this); 463} 464 465 466 467hb_font_t * 468font_options_t::get_font (void) const 469{ 470 if (font) 471 return font; 472 473 hb_blob_t *blob = NULL; 474 475 /* Create the blob */ 476 { 477 char *font_data; 478 unsigned int len = 0; 479 hb_destroy_func_t destroy; 480 void *user_data; 481 hb_memory_mode_t mm; 482 483 /* This is a hell of a lot of code for just reading a file! */ 484 if (!font_file) 485 fail (true, "No font file set"); 486 487 if (0 == strcmp (font_file, "-")) { 488 /* read it */ 489 GString *gs = g_string_new (NULL); 490 char buf[BUFSIZ]; 491#if defined(_WIN32) || defined(__CYGWIN__) 492 setmode (fileno (stdin), _O_BINARY); 493#endif 494 while (!feof (stdin)) { 495 size_t ret = fread (buf, 1, sizeof (buf), stdin); 496 if (ferror (stdin)) 497 fail (false, "Failed reading font from standard input: %s", 498 strerror (errno)); 499 g_string_append_len (gs, buf, ret); 500 } 501 len = gs->len; 502 font_data = g_string_free (gs, false); 503 user_data = font_data; 504 destroy = (hb_destroy_func_t) g_free; 505 mm = HB_MEMORY_MODE_WRITABLE; 506 } else { 507 GError *error = NULL; 508 GMappedFile *mf = g_mapped_file_new (font_file, false, &error); 509 if (mf) { 510 font_data = g_mapped_file_get_contents (mf); 511 len = g_mapped_file_get_length (mf); 512 if (len) { 513 destroy = (hb_destroy_func_t) g_mapped_file_unref; 514 user_data = (void *) mf; 515 mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE; 516 } else 517 g_mapped_file_unref (mf); 518 } else { 519 fail (false, "%s", error->message); 520 //g_error_free (error); 521 } 522 if (!len) { 523 /* GMappedFile is buggy, it doesn't fail if file isn't regular. 524 * Try reading. 525 * https://bugzilla.gnome.org/show_bug.cgi?id=659212 */ 526 GError *error = NULL; 527 gsize l; 528 if (g_file_get_contents (font_file, &font_data, &l, &error)) { 529 len = l; 530 destroy = (hb_destroy_func_t) g_free; 531 user_data = (void *) font_data; 532 mm = HB_MEMORY_MODE_WRITABLE; 533 } else { 534 fail (false, "%s", error->message); 535 //g_error_free (error); 536 } 537 } 538 } 539 540 blob = hb_blob_create (font_data, len, mm, user_data, destroy); 541 } 542 543 /* Create the face */ 544 hb_face_t *face = hb_face_create (blob, face_index); 545 hb_blob_destroy (blob); 546 547 548 font = hb_font_create (face); 549 550 if (font_size_x == FONT_SIZE_UPEM) 551 font_size_x = hb_face_get_upem (face); 552 if (font_size_y == FONT_SIZE_UPEM) 553 font_size_y = hb_face_get_upem (face); 554 555 int scale_x = (int) scalbnf (font_size_x, subpixel_bits); 556 int scale_y = (int) scalbnf (font_size_y, subpixel_bits); 557 hb_font_set_scale (font, scale_x, scale_y); 558 hb_face_destroy (face); 559 560 void (*set_font_funcs) (hb_font_t *) = NULL; 561 if (!font_funcs) 562 { 563 set_font_funcs = supported_font_funcs[0].func; 564 } 565 else 566 { 567 for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++) 568 if (0 == strcasecmp (font_funcs, supported_font_funcs[i].name)) 569 { 570 set_font_funcs = supported_font_funcs[i].func; 571 break; 572 } 573 if (!set_font_funcs) 574 { 575 GString *s = g_string_new (NULL); 576 for (unsigned int i = 0; i < ARRAY_LENGTH (supported_font_funcs); i++) 577 { 578 if (i) 579 g_string_append_c (s, '/'); 580 g_string_append (s, supported_font_funcs[i].name); 581 } 582 char *p = g_string_free (s, FALSE); 583 fail (false, "Unknown font function implementation `%s'; supported values are: %s; default is %s", 584 font_funcs, 585 p, 586 supported_font_funcs[0].name); 587 //free (p); 588 } 589 } 590 set_font_funcs (font); 591 592 return font; 593} 594 595 596const char * 597text_options_t::get_line (unsigned int *len) 598{ 599 if (text) { 600 if (text_len == (unsigned int) -1) 601 text_len = strlen (text); 602 603 if (!text_len) { 604 *len = 0; 605 return NULL; 606 } 607 608 const char *ret = text; 609 const char *p = (const char *) memchr (text, '\n', text_len); 610 unsigned int ret_len; 611 if (!p) { 612 ret_len = text_len; 613 text += ret_len; 614 text_len = 0; 615 } else { 616 ret_len = p - ret; 617 text += ret_len + 1; 618 text_len -= ret_len + 1; 619 } 620 621 *len = ret_len; 622 return ret; 623 } 624 625 if (!fp) { 626 if (!text_file) 627 fail (true, "At least one of text or text-file must be set"); 628 629 if (0 != strcmp (text_file, "-")) 630 fp = fopen (text_file, "r"); 631 else 632 fp = stdin; 633 634 if (!fp) 635 fail (false, "Failed opening text file `%s': %s", 636 text_file, strerror (errno)); 637 638 gs = g_string_new (NULL); 639 } 640 641 g_string_set_size (gs, 0); 642 char buf[BUFSIZ]; 643 while (fgets (buf, sizeof (buf), fp)) { 644 unsigned int bytes = strlen (buf); 645 if (bytes && buf[bytes - 1] == '\n') { 646 bytes--; 647 g_string_append_len (gs, buf, bytes); 648 break; 649 } 650 g_string_append_len (gs, buf, bytes); 651 } 652 if (ferror (fp)) 653 fail (false, "Failed reading text: %s", 654 strerror (errno)); 655 *len = gs->len; 656 return !*len && feof (fp) ? NULL : gs->str; 657} 658 659 660FILE * 661output_options_t::get_file_handle (void) 662{ 663 if (fp) 664 return fp; 665 666 if (output_file) 667 fp = fopen (output_file, "wb"); 668 else { 669#if defined(_WIN32) || defined(__CYGWIN__) 670 setmode (fileno (stdout), _O_BINARY); 671#endif 672 fp = stdout; 673 } 674 if (!fp) 675 fail (false, "Cannot open output file `%s': %s", 676 g_filename_display_name (output_file), strerror (errno)); 677 678 return fp; 679} 680 681static gboolean 682parse_verbose (const char *name G_GNUC_UNUSED, 683 const char *arg G_GNUC_UNUSED, 684 gpointer data G_GNUC_UNUSED, 685 GError **error G_GNUC_UNUSED) 686{ 687 format_options_t *format_opts = (format_options_t *) data; 688 format_opts->show_text = format_opts->show_unicode = format_opts->show_line_num = true; 689 return true; 690} 691 692void 693format_options_t::add_options (option_parser_t *parser) 694{ 695 GOptionEntry entries[] = 696 { 697 {"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_glyph_names, "Use glyph indices instead of names", NULL}, 698 {"no-positions", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_positions, "Do not show glyph positions", NULL}, 699 {"no-clusters", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_clusters, "Do not show cluster mapping", NULL}, 700 {"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Show input text", NULL}, 701 {"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Show input Unicode codepoints", NULL}, 702 {"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Show line numbers", NULL}, 703 {"verbose", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,(gpointer) &parse_verbose, "Show everything", NULL}, 704 {NULL} 705 }; 706 parser->add_group (entries, 707 "format", 708 "Format options:", 709 "Options controlling the formatting of buffer contents", 710 this); 711} 712 713void 714format_options_t::serialize_unicode (hb_buffer_t *buffer, 715 GString *gs) 716{ 717 unsigned int num_glyphs = hb_buffer_get_length (buffer); 718 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL); 719 720 g_string_append_c (gs, '<'); 721 for (unsigned int i = 0; i < num_glyphs; i++) 722 { 723 if (i) 724 g_string_append_c (gs, ','); 725 g_string_append_printf (gs, "U+%04X", info->codepoint); 726 info++; 727 } 728 g_string_append_c (gs, '>'); 729} 730 731void 732format_options_t::serialize_glyphs (hb_buffer_t *buffer, 733 hb_font_t *font, 734 hb_buffer_serialize_format_t output_format, 735 hb_buffer_serialize_flags_t flags, 736 GString *gs) 737{ 738 g_string_append_c (gs, '['); 739 unsigned int num_glyphs = hb_buffer_get_length (buffer); 740 unsigned int start = 0; 741 742 while (start < num_glyphs) { 743 char buf[1024]; 744 unsigned int consumed; 745 start += hb_buffer_serialize_glyphs (buffer, start, num_glyphs, 746 buf, sizeof (buf), &consumed, 747 font, output_format, flags); 748 if (!consumed) 749 break; 750 g_string_append (gs, buf); 751 } 752 g_string_append_c (gs, ']'); 753} 754void 755format_options_t::serialize_line_no (unsigned int line_no, 756 GString *gs) 757{ 758 if (show_line_num) 759 g_string_append_printf (gs, "%d: ", line_no); 760} 761void 762format_options_t::serialize_buffer_of_text (hb_buffer_t *buffer, 763 unsigned int line_no, 764 const char *text, 765 unsigned int text_len, 766 hb_font_t *font, 767 GString *gs) 768{ 769 if (show_text) { 770 serialize_line_no (line_no, gs); 771 g_string_append_c (gs, '('); 772 g_string_append_len (gs, text, text_len); 773 g_string_append_c (gs, ')'); 774 g_string_append_c (gs, '\n'); 775 } 776 777 if (show_unicode) { 778 serialize_line_no (line_no, gs); 779 serialize_unicode (buffer, gs); 780 g_string_append_c (gs, '\n'); 781 } 782} 783void 784format_options_t::serialize_message (unsigned int line_no, 785 const char *msg, 786 GString *gs) 787{ 788 serialize_line_no (line_no, gs); 789 g_string_append_printf (gs, "%s", msg); 790 g_string_append_c (gs, '\n'); 791} 792void 793format_options_t::serialize_buffer_of_glyphs (hb_buffer_t *buffer, 794 unsigned int line_no, 795 const char *text, 796 unsigned int text_len, 797 hb_font_t *font, 798 hb_buffer_serialize_format_t output_format, 799 hb_buffer_serialize_flags_t format_flags, 800 GString *gs) 801{ 802 serialize_line_no (line_no, gs); 803 serialize_glyphs (buffer, font, output_format, format_flags, gs); 804 g_string_append_c (gs, '\n'); 805} 806