/contrib/groff/src/roff/troff/node.cpp
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1// -*- C++ -*- 2/* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2001, 2002, 2003, 2004, 2005 3 Free Software Foundation, Inc. 4 Written by James Clark (jjc@jclark.com) 5 6This file is part of groff. 7 8groff is free software; you can redistribute it and/or modify it under 9the terms of the GNU General Public License as published by the Free 10Software Foundation; either version 2, or (at your option) any later 11version. 12 13groff is distributed in the hope that it will be useful, but WITHOUT ANY 14WARRANTY; without even the implied warranty of MERCHANTABILITY or 15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16for more details. 17 18You should have received a copy of the GNU General Public License along 19with groff; see the file COPYING. If not, write to the Free Software 20Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */ 21 22extern int debug_state; 23 24#include "troff.h" 25 26#ifdef HAVE_UNISTD_H 27#include <unistd.h> 28#endif 29 30#include "dictionary.h" 31#include "hvunits.h" 32#include "stringclass.h" 33#include "mtsm.h" 34#include "env.h" 35#include "request.h" 36#include "node.h" 37#include "token.h" 38#include "div.h" 39#include "reg.h" 40#include "charinfo.h" 41#include "font.h" 42#include "input.h" 43#include "geometry.h" 44 45#include "nonposix.h" 46 47#ifdef _POSIX_VERSION 48 49#include <sys/wait.h> 50 51#else /* not _POSIX_VERSION */ 52 53/* traditional Unix */ 54 55#define WIFEXITED(s) (((s) & 0377) == 0) 56#define WEXITSTATUS(s) (((s) >> 8) & 0377) 57#define WTERMSIG(s) ((s) & 0177) 58#define WIFSTOPPED(s) (((s) & 0377) == 0177) 59#define WSTOPSIG(s) (((s) >> 8) & 0377) 60#define WIFSIGNALED(s) (((s) & 0377) != 0 && (((s) & 0377) != 0177)) 61 62#endif /* not _POSIX_VERSION */ 63 64// declarations to avoid friend name injections 65class tfont; 66class tfont_spec; 67tfont *make_tfont(tfont_spec &); 68 69 70/* 71 * how many boundaries of images have been written? Useful for 72 * debugging grohtml 73 */ 74 75int image_no = 0; 76static int suppress_start_page = 0; 77 78#define STORE_WIDTH 1 79 80symbol HYPHEN_SYMBOL("hy"); 81 82// Character used when a hyphen is inserted at a line break. 83static charinfo *soft_hyphen_char; 84 85enum constant_space_type { 86 CONSTANT_SPACE_NONE, 87 CONSTANT_SPACE_RELATIVE, 88 CONSTANT_SPACE_ABSOLUTE 89 }; 90 91struct special_font_list { 92 int n; 93 special_font_list *next; 94}; 95 96special_font_list *global_special_fonts; 97static int global_ligature_mode = 1; 98static int global_kern_mode = 1; 99 100class track_kerning_function { 101 int non_zero; 102 units min_size; 103 hunits min_amount; 104 units max_size; 105 hunits max_amount; 106public: 107 track_kerning_function(); 108 track_kerning_function(units, hunits, units, hunits); 109 int operator==(const track_kerning_function &); 110 int operator!=(const track_kerning_function &); 111 hunits compute(int point_size); 112}; 113 114// embolden fontno when this is the current font 115 116struct conditional_bold { 117 conditional_bold *next; 118 int fontno; 119 hunits offset; 120 conditional_bold(int, hunits, conditional_bold * = 0); 121}; 122 123class font_info { 124 tfont *last_tfont; 125 int number; 126 font_size last_size; 127 int last_height; 128 int last_slant; 129 symbol internal_name; 130 symbol external_name; 131 font *fm; 132 char is_bold; 133 hunits bold_offset; 134 track_kerning_function track_kern; 135 constant_space_type is_constant_spaced; 136 units constant_space; 137 int last_ligature_mode; 138 int last_kern_mode; 139 conditional_bold *cond_bold_list; 140 void flush(); 141public: 142 special_font_list *sf; 143 font_info(symbol, int, symbol, font *); 144 int contains(charinfo *); 145 void set_bold(hunits); 146 void unbold(); 147 void set_conditional_bold(int, hunits); 148 void conditional_unbold(int); 149 void set_track_kern(track_kerning_function &); 150 void set_constant_space(constant_space_type, units = 0); 151 int is_named(symbol); 152 symbol get_name(); 153 tfont *get_tfont(font_size, int, int, int); 154 hunits get_space_width(font_size, int); 155 hunits get_narrow_space_width(font_size); 156 hunits get_half_narrow_space_width(font_size); 157 int get_bold(hunits *); 158 int is_special(); 159 int is_style(); 160 friend symbol get_font_name(int, environment *); 161 friend symbol get_style_name(int); 162}; 163 164class tfont_spec { 165protected: 166 symbol name; 167 int input_position; 168 font *fm; 169 font_size size; 170 char is_bold; 171 char is_constant_spaced; 172 int ligature_mode; 173 int kern_mode; 174 hunits bold_offset; 175 hunits track_kern; // add this to the width 176 hunits constant_space_width; 177 int height; 178 int slant; 179public: 180 tfont_spec(symbol, int, font *, font_size, int, int); 181 tfont_spec(const tfont_spec &spec) { *this = spec; } 182 tfont_spec plain(); 183 int operator==(const tfont_spec &); 184 friend tfont *font_info::get_tfont(font_size fs, int, int, int); 185}; 186 187class tfont : public tfont_spec { 188 static tfont *tfont_list; 189 tfont *next; 190 tfont *plain_version; 191public: 192 tfont(tfont_spec &); 193 int contains(charinfo *); 194 hunits get_width(charinfo *c); 195 int get_bold(hunits *); 196 int get_constant_space(hunits *); 197 hunits get_track_kern(); 198 tfont *get_plain(); 199 font_size get_size(); 200 symbol get_name(); 201 charinfo *get_lig(charinfo *c1, charinfo *c2); 202 int get_kern(charinfo *c1, charinfo *c2, hunits *res); 203 int get_input_position(); 204 int get_character_type(charinfo *); 205 int get_height(); 206 int get_slant(); 207 vunits get_char_height(charinfo *); 208 vunits get_char_depth(charinfo *); 209 hunits get_char_skew(charinfo *); 210 hunits get_italic_correction(charinfo *); 211 hunits get_left_italic_correction(charinfo *); 212 hunits get_subscript_correction(charinfo *); 213 friend tfont *make_tfont(tfont_spec &); 214}; 215 216inline int env_definite_font(environment *env) 217{ 218 return env->get_family()->make_definite(env->get_font()); 219} 220 221/* font_info functions */ 222 223static font_info **font_table = 0; 224static int font_table_size = 0; 225 226font_info::font_info(symbol nm, int n, symbol enm, font *f) 227: last_tfont(0), number(n), last_size(0), 228 internal_name(nm), external_name(enm), fm(f), 229 is_bold(0), is_constant_spaced(CONSTANT_SPACE_NONE), last_ligature_mode(1), 230 last_kern_mode(1), cond_bold_list(0), sf(0) 231{ 232} 233 234inline int font_info::contains(charinfo *ci) 235{ 236 return fm != 0 && fm->contains(ci->get_index()); 237} 238 239inline int font_info::is_special() 240{ 241 return fm != 0 && fm->is_special(); 242} 243 244inline int font_info::is_style() 245{ 246 return fm == 0; 247} 248 249tfont *make_tfont(tfont_spec &spec) 250{ 251 for (tfont *p = tfont::tfont_list; p; p = p->next) 252 if (*p == spec) 253 return p; 254 return new tfont(spec); 255} 256 257// this is the current_font, fontno is where we found the character, 258// presumably a special font 259 260tfont *font_info::get_tfont(font_size fs, int height, int slant, int fontno) 261{ 262 if (last_tfont == 0 || fs != last_size 263 || height != last_height || slant != last_slant 264 || global_ligature_mode != last_ligature_mode 265 || global_kern_mode != last_kern_mode 266 || fontno != number) { 267 font_info *f = font_table[fontno]; 268 tfont_spec spec(f->external_name, f->number, f->fm, fs, height, slant); 269 for (conditional_bold *p = cond_bold_list; p; p = p->next) 270 if (p->fontno == fontno) { 271 spec.is_bold = 1; 272 spec.bold_offset = p->offset; 273 break; 274 } 275 if (!spec.is_bold && is_bold) { 276 spec.is_bold = 1; 277 spec.bold_offset = bold_offset; 278 } 279 spec.track_kern = track_kern.compute(fs.to_scaled_points()); 280 spec.ligature_mode = global_ligature_mode; 281 spec.kern_mode = global_kern_mode; 282 switch (is_constant_spaced) { 283 case CONSTANT_SPACE_NONE: 284 break; 285 case CONSTANT_SPACE_ABSOLUTE: 286 spec.is_constant_spaced = 1; 287 spec.constant_space_width = constant_space; 288 break; 289 case CONSTANT_SPACE_RELATIVE: 290 spec.is_constant_spaced = 1; 291 spec.constant_space_width 292 = scale(constant_space*fs.to_scaled_points(), 293 units_per_inch, 294 36*72*sizescale); 295 break; 296 default: 297 assert(0); 298 } 299 if (fontno != number) 300 return make_tfont(spec); 301 last_tfont = make_tfont(spec); 302 last_size = fs; 303 last_height = height; 304 last_slant = slant; 305 last_ligature_mode = global_ligature_mode; 306 last_kern_mode = global_kern_mode; 307 } 308 return last_tfont; 309} 310 311int font_info::get_bold(hunits *res) 312{ 313 if (is_bold) { 314 *res = bold_offset; 315 return 1; 316 } 317 else 318 return 0; 319} 320 321void font_info::unbold() 322{ 323 if (is_bold) { 324 is_bold = 0; 325 flush(); 326 } 327} 328 329void font_info::set_bold(hunits offset) 330{ 331 if (!is_bold || offset != bold_offset) { 332 is_bold = 1; 333 bold_offset = offset; 334 flush(); 335 } 336} 337 338void font_info::set_conditional_bold(int fontno, hunits offset) 339{ 340 for (conditional_bold *p = cond_bold_list; p; p = p->next) 341 if (p->fontno == fontno) { 342 if (offset != p->offset) { 343 p->offset = offset; 344 flush(); 345 } 346 return; 347 } 348 cond_bold_list = new conditional_bold(fontno, offset, cond_bold_list); 349} 350 351conditional_bold::conditional_bold(int f, hunits h, conditional_bold *x) 352: next(x), fontno(f), offset(h) 353{ 354} 355 356void font_info::conditional_unbold(int fontno) 357{ 358 for (conditional_bold **p = &cond_bold_list; *p; p = &(*p)->next) 359 if ((*p)->fontno == fontno) { 360 conditional_bold *tem = *p; 361 *p = (*p)->next; 362 delete tem; 363 flush(); 364 return; 365 } 366} 367 368void font_info::set_constant_space(constant_space_type type, units x) 369{ 370 if (type != is_constant_spaced 371 || (type != CONSTANT_SPACE_NONE && x != constant_space)) { 372 flush(); 373 is_constant_spaced = type; 374 constant_space = x; 375 } 376} 377 378void font_info::set_track_kern(track_kerning_function &tk) 379{ 380 if (track_kern != tk) { 381 track_kern = tk; 382 flush(); 383 } 384} 385 386void font_info::flush() 387{ 388 last_tfont = 0; 389} 390 391int font_info::is_named(symbol s) 392{ 393 return internal_name == s; 394} 395 396symbol font_info::get_name() 397{ 398 return internal_name; 399} 400 401symbol get_font_name(int fontno, environment *env) 402{ 403 symbol f = font_table[fontno]->get_name(); 404 if (font_table[fontno]->is_style()) { 405 return concat(env->get_family()->nm, f); 406 } 407 return f; 408} 409 410symbol get_style_name(int fontno) 411{ 412 if (font_table[fontno]->is_style()) 413 return font_table[fontno]->get_name(); 414 else 415 return EMPTY_SYMBOL; 416} 417 418hunits font_info::get_space_width(font_size fs, int space_sz) 419{ 420 if (is_constant_spaced == CONSTANT_SPACE_NONE) 421 return scale(hunits(fm->get_space_width(fs.to_scaled_points())), 422 space_sz, 12); 423 else if (is_constant_spaced == CONSTANT_SPACE_ABSOLUTE) 424 return constant_space; 425 else 426 return scale(constant_space*fs.to_scaled_points(), 427 units_per_inch, 36*72*sizescale); 428} 429 430hunits font_info::get_narrow_space_width(font_size fs) 431{ 432 charinfo *ci = get_charinfo(symbol("|")); 433 if (fm->contains(ci->get_index())) 434 return hunits(fm->get_width(ci->get_index(), fs.to_scaled_points())); 435 else 436 return hunits(fs.to_units()/6); 437} 438 439hunits font_info::get_half_narrow_space_width(font_size fs) 440{ 441 charinfo *ci = get_charinfo(symbol("^")); 442 if (fm->contains(ci->get_index())) 443 return hunits(fm->get_width(ci->get_index(), fs.to_scaled_points())); 444 else 445 return hunits(fs.to_units()/12); 446} 447 448/* tfont */ 449 450tfont_spec::tfont_spec(symbol nm, int n, font *f, 451 font_size s, int h, int sl) 452: name(nm), input_position(n), fm(f), size(s), 453 is_bold(0), is_constant_spaced(0), ligature_mode(1), kern_mode(1), 454 height(h), slant(sl) 455{ 456 if (height == size.to_scaled_points()) 457 height = 0; 458} 459 460int tfont_spec::operator==(const tfont_spec &spec) 461{ 462 if (fm == spec.fm 463 && size == spec.size 464 && input_position == spec.input_position 465 && name == spec.name 466 && height == spec.height 467 && slant == spec.slant 468 && (is_bold 469 ? (spec.is_bold && bold_offset == spec.bold_offset) 470 : !spec.is_bold) 471 && track_kern == spec.track_kern 472 && (is_constant_spaced 473 ? (spec.is_constant_spaced 474 && constant_space_width == spec.constant_space_width) 475 : !spec.is_constant_spaced) 476 && ligature_mode == spec.ligature_mode 477 && kern_mode == spec.kern_mode) 478 return 1; 479 else 480 return 0; 481} 482 483tfont_spec tfont_spec::plain() 484{ 485 return tfont_spec(name, input_position, fm, size, height, slant); 486} 487 488hunits tfont::get_width(charinfo *c) 489{ 490 if (is_constant_spaced) 491 return constant_space_width; 492 else if (is_bold) 493 return (hunits(fm->get_width(c->get_index(), size.to_scaled_points())) 494 + track_kern + bold_offset); 495 else 496 return (hunits(fm->get_width(c->get_index(), size.to_scaled_points())) 497 + track_kern); 498} 499 500vunits tfont::get_char_height(charinfo *c) 501{ 502 vunits v = fm->get_height(c->get_index(), size.to_scaled_points()); 503 if (height != 0 && height != size.to_scaled_points()) 504 return scale(v, height, size.to_scaled_points()); 505 else 506 return v; 507} 508 509vunits tfont::get_char_depth(charinfo *c) 510{ 511 vunits v = fm->get_depth(c->get_index(), size.to_scaled_points()); 512 if (height != 0 && height != size.to_scaled_points()) 513 return scale(v, height, size.to_scaled_points()); 514 else 515 return v; 516} 517 518hunits tfont::get_char_skew(charinfo *c) 519{ 520 return hunits(fm->get_skew(c->get_index(), size.to_scaled_points(), slant)); 521} 522 523hunits tfont::get_italic_correction(charinfo *c) 524{ 525 return hunits(fm->get_italic_correction(c->get_index(), size.to_scaled_points())); 526} 527 528hunits tfont::get_left_italic_correction(charinfo *c) 529{ 530 return hunits(fm->get_left_italic_correction(c->get_index(), 531 size.to_scaled_points())); 532} 533 534hunits tfont::get_subscript_correction(charinfo *c) 535{ 536 return hunits(fm->get_subscript_correction(c->get_index(), 537 size.to_scaled_points())); 538} 539 540inline int tfont::get_input_position() 541{ 542 return input_position; 543} 544 545inline int tfont::contains(charinfo *ci) 546{ 547 return fm->contains(ci->get_index()); 548} 549 550inline int tfont::get_character_type(charinfo *ci) 551{ 552 return fm->get_character_type(ci->get_index()); 553} 554 555inline int tfont::get_bold(hunits *res) 556{ 557 if (is_bold) { 558 *res = bold_offset; 559 return 1; 560 } 561 else 562 return 0; 563} 564 565inline int tfont::get_constant_space(hunits *res) 566{ 567 if (is_constant_spaced) { 568 *res = constant_space_width; 569 return 1; 570 } 571 else 572 return 0; 573} 574 575inline hunits tfont::get_track_kern() 576{ 577 return track_kern; 578} 579 580inline tfont *tfont::get_plain() 581{ 582 return plain_version; 583} 584 585inline font_size tfont::get_size() 586{ 587 return size; 588} 589 590inline symbol tfont::get_name() 591{ 592 return name; 593} 594 595inline int tfont::get_height() 596{ 597 return height; 598} 599 600inline int tfont::get_slant() 601{ 602 return slant; 603} 604 605symbol SYMBOL_ff("ff"); 606symbol SYMBOL_fi("fi"); 607symbol SYMBOL_fl("fl"); 608symbol SYMBOL_Fi("Fi"); 609symbol SYMBOL_Fl("Fl"); 610 611charinfo *tfont::get_lig(charinfo *c1, charinfo *c2) 612{ 613 if (ligature_mode == 0) 614 return 0; 615 charinfo *ci = 0; 616 if (c1->get_ascii_code() == 'f') { 617 switch (c2->get_ascii_code()) { 618 case 'f': 619 if (fm->has_ligature(font::LIG_ff)) 620 ci = get_charinfo(SYMBOL_ff); 621 break; 622 case 'i': 623 if (fm->has_ligature(font::LIG_fi)) 624 ci = get_charinfo(SYMBOL_fi); 625 break; 626 case 'l': 627 if (fm->has_ligature(font::LIG_fl)) 628 ci = get_charinfo(SYMBOL_fl); 629 break; 630 } 631 } 632 else if (ligature_mode != 2 && c1->nm == SYMBOL_ff) { 633 switch (c2->get_ascii_code()) { 634 case 'i': 635 if (fm->has_ligature(font::LIG_ffi)) 636 ci = get_charinfo(SYMBOL_Fi); 637 break; 638 case 'l': 639 if (fm->has_ligature(font::LIG_ffl)) 640 ci = get_charinfo(SYMBOL_Fl); 641 break; 642 } 643 } 644 if (ci != 0 && fm->contains(ci->get_index())) 645 return ci; 646 return 0; 647} 648 649inline int tfont::get_kern(charinfo *c1, charinfo *c2, hunits *res) 650{ 651 if (kern_mode == 0) 652 return 0; 653 else { 654 int n = fm->get_kern(c1->get_index(), 655 c2->get_index(), 656 size.to_scaled_points()); 657 if (n) { 658 *res = hunits(n); 659 return 1; 660 } 661 else 662 return 0; 663 } 664} 665 666tfont *tfont::tfont_list = 0; 667 668tfont::tfont(tfont_spec &spec) : tfont_spec(spec) 669{ 670 next = tfont_list; 671 tfont_list = this; 672 tfont_spec plain_spec = plain(); 673 tfont *p; 674 for (p = tfont_list; p; p = p->next) 675 if (*p == plain_spec) { 676 plain_version = p; 677 break; 678 } 679 if (!p) 680 plain_version = new tfont(plain_spec); 681} 682 683/* output_file */ 684 685class real_output_file : public output_file { 686#ifndef POPEN_MISSING 687 int piped; 688#endif 689 int printing; // decision via optional page list 690 int output_on; // \O[0] or \O[1] escape calls 691 virtual void really_transparent_char(unsigned char) = 0; 692 virtual void really_print_line(hunits x, vunits y, node *n, 693 vunits before, vunits after, hunits width) = 0; 694 virtual void really_begin_page(int pageno, vunits page_length) = 0; 695 virtual void really_copy_file(hunits x, vunits y, const char *filename); 696 virtual void really_put_filename(const char *filename); 697 virtual void really_on(); 698 virtual void really_off(); 699public: 700 FILE *fp; 701 real_output_file(); 702 ~real_output_file(); 703 void flush(); 704 void transparent_char(unsigned char); 705 void print_line(hunits x, vunits y, node *n, vunits before, vunits after, hunits width); 706 void begin_page(int pageno, vunits page_length); 707 void put_filename(const char *filename); 708 void on(); 709 void off(); 710 int is_on(); 711 int is_printing(); 712 void copy_file(hunits x, vunits y, const char *filename); 713}; 714 715class suppress_output_file : public real_output_file { 716public: 717 suppress_output_file(); 718 void really_transparent_char(unsigned char); 719 void really_print_line(hunits x, vunits y, node *n, vunits, vunits, hunits width); 720 void really_begin_page(int pageno, vunits page_length); 721}; 722 723class ascii_output_file : public real_output_file { 724public: 725 ascii_output_file(); 726 void really_transparent_char(unsigned char); 727 void really_print_line(hunits x, vunits y, node *n, vunits, vunits, hunits width); 728 void really_begin_page(int pageno, vunits page_length); 729 void outc(unsigned char c); 730 void outs(const char *s); 731}; 732 733void ascii_output_file::outc(unsigned char c) 734{ 735 fputc(c, fp); 736} 737 738void ascii_output_file::outs(const char *s) 739{ 740 fputc('<', fp); 741 if (s) 742 fputs(s, fp); 743 fputc('>', fp); 744} 745 746struct hvpair; 747 748class troff_output_file : public real_output_file { 749 units hpos; 750 units vpos; 751 units output_vpos; 752 units output_hpos; 753 int force_motion; 754 int current_size; 755 int current_slant; 756 int current_height; 757 tfont *current_tfont; 758 color *current_fill_color; 759 color *current_glyph_color; 760 int current_font_number; 761 symbol *font_position; 762 int nfont_positions; 763 enum { TBUF_SIZE = 256 }; 764 char tbuf[TBUF_SIZE]; 765 int tbuf_len; 766 int tbuf_kern; 767 int begun_page; 768 int cur_div_level; 769 string tag_list; 770 void do_motion(); 771 void put(char c); 772 void put(unsigned char c); 773 void put(int i); 774 void put(unsigned int i); 775 void put(const char *s); 776 void set_font(tfont *tf); 777 void flush_tbuf(); 778public: 779 troff_output_file(); 780 ~troff_output_file(); 781 void trailer(vunits page_length); 782 void put_char(charinfo *, tfont *, color *, color *); 783 void put_char_width(charinfo *, tfont *, color *, color *, hunits, hunits); 784 void right(hunits); 785 void down(vunits); 786 void moveto(hunits, vunits); 787 void start_special(tfont *, color *, color *, int = 0); 788 void start_special(); 789 void special_char(unsigned char c); 790 void end_special(); 791 void word_marker(); 792 void really_transparent_char(unsigned char c); 793 void really_print_line(hunits x, vunits y, node *n, vunits before, vunits after, hunits width); 794 void really_begin_page(int pageno, vunits page_length); 795 void really_copy_file(hunits x, vunits y, const char *filename); 796 void really_put_filename(const char *filename); 797 void really_on(); 798 void really_off(); 799 void draw(char, hvpair *, int, font_size, color *, color *); 800 void determine_line_limits (char code, hvpair *point, int npoints); 801 void check_charinfo(tfont *tf, charinfo *ci); 802 void glyph_color(color *c); 803 void fill_color(color *c); 804 int get_hpos() { return hpos; } 805 int get_vpos() { return vpos; } 806 void add_to_tag_list(string s); 807 friend void space_char_hmotion_node::tprint(troff_output_file *); 808 friend void unbreakable_space_node::tprint(troff_output_file *); 809}; 810 811static void put_string(const char *s, FILE *fp) 812{ 813 for (; *s != '\0'; ++s) 814 putc(*s, fp); 815} 816 817inline void troff_output_file::put(char c) 818{ 819 putc(c, fp); 820} 821 822inline void troff_output_file::put(unsigned char c) 823{ 824 putc(c, fp); 825} 826 827inline void troff_output_file::put(const char *s) 828{ 829 put_string(s, fp); 830} 831 832inline void troff_output_file::put(int i) 833{ 834 put_string(i_to_a(i), fp); 835} 836 837inline void troff_output_file::put(unsigned int i) 838{ 839 put_string(ui_to_a(i), fp); 840} 841 842void troff_output_file::start_special(tfont *tf, color *gcol, color *fcol, 843 int no_init_string) 844{ 845 set_font(tf); 846 glyph_color(gcol); 847 fill_color(fcol); 848 flush_tbuf(); 849 do_motion(); 850 if (!no_init_string) 851 put("x X "); 852} 853 854void troff_output_file::start_special() 855{ 856 flush_tbuf(); 857 do_motion(); 858 put("x X "); 859} 860 861void troff_output_file::special_char(unsigned char c) 862{ 863 put(c); 864 if (c == '\n') 865 put('+'); 866} 867 868void troff_output_file::end_special() 869{ 870 put('\n'); 871} 872 873inline void troff_output_file::moveto(hunits h, vunits v) 874{ 875 hpos = h.to_units(); 876 vpos = v.to_units(); 877} 878 879void troff_output_file::really_print_line(hunits x, vunits y, node *n, 880 vunits before, vunits after, hunits) 881{ 882 moveto(x, y); 883 while (n != 0) { 884 // Check whether we should push the current troff state and use 885 // the state at the start of the invocation of this diversion. 886 if (n->div_nest_level > cur_div_level && n->push_state) { 887 state.push_state(n->push_state); 888 cur_div_level = n->div_nest_level; 889 } 890 // Has the current diversion level decreased? Then we must pop the 891 // troff state. 892 while (n->div_nest_level < cur_div_level) { 893 state.pop_state(); 894 cur_div_level = n->div_nest_level; 895 } 896 // Now check whether the state has changed. 897 if ((is_on() || n->force_tprint()) 898 && (state.changed(n->state) || n->is_tag() || n->is_special)) { 899 flush_tbuf(); 900 do_motion(); 901 force_motion = 1; 902 flush(); 903 state.flush(fp, n->state, tag_list); 904 tag_list = string(""); 905 flush(); 906 } 907 n->tprint(this); 908 n = n->next; 909 } 910 flush_tbuf(); 911 // This ensures that transparent throughput will have a more predictable 912 // position. 913 do_motion(); 914 force_motion = 1; 915 hpos = 0; 916 put('n'); 917 put(before.to_units()); 918 put(' '); 919 put(after.to_units()); 920 put('\n'); 921} 922 923inline void troff_output_file::word_marker() 924{ 925 flush_tbuf(); 926 if (is_on()) 927 put('w'); 928} 929 930inline void troff_output_file::right(hunits n) 931{ 932 hpos += n.to_units(); 933} 934 935inline void troff_output_file::down(vunits n) 936{ 937 vpos += n.to_units(); 938} 939 940void troff_output_file::do_motion() 941{ 942 if (force_motion) { 943 put('V'); 944 put(vpos); 945 put('\n'); 946 put('H'); 947 put(hpos); 948 put('\n'); 949 } 950 else { 951 if (hpos != output_hpos) { 952 units n = hpos - output_hpos; 953 if (n > 0 && n < hpos) { 954 put('h'); 955 put(n); 956 } 957 else { 958 put('H'); 959 put(hpos); 960 } 961 put('\n'); 962 } 963 if (vpos != output_vpos) { 964 units n = vpos - output_vpos; 965 if (n > 0 && n < vpos) { 966 put('v'); 967 put(n); 968 } 969 else { 970 put('V'); 971 put(vpos); 972 } 973 put('\n'); 974 } 975 } 976 output_vpos = vpos; 977 output_hpos = hpos; 978 force_motion = 0; 979} 980 981void troff_output_file::flush_tbuf() 982{ 983 if (!is_on()) { 984 tbuf_len = 0; 985 return; 986 } 987 988 if (tbuf_len == 0) 989 return; 990 if (tbuf_kern == 0) 991 put('t'); 992 else { 993 put('u'); 994 put(tbuf_kern); 995 put(' '); 996 } 997 check_output_limits(hpos, vpos); 998 check_output_limits(hpos, vpos - current_size); 999 1000 for (int i = 0; i < tbuf_len; i++) 1001 put(tbuf[i]); 1002 put('\n'); 1003 tbuf_len = 0; 1004} 1005 1006void troff_output_file::check_charinfo(tfont *tf, charinfo *ci) 1007{ 1008 if (!is_on()) 1009 return; 1010 1011 int height = tf->get_char_height(ci).to_units(); 1012 int width = tf->get_width(ci).to_units() 1013 + tf->get_italic_correction(ci).to_units(); 1014 int depth = tf->get_char_depth(ci).to_units(); 1015 check_output_limits(output_hpos, output_vpos - height); 1016 check_output_limits(output_hpos + width, output_vpos + depth); 1017} 1018 1019void troff_output_file::put_char_width(charinfo *ci, tfont *tf, 1020 color *gcol, color *fcol, 1021 hunits w, hunits k) 1022{ 1023 int kk = k.to_units(); 1024 if (!is_on()) { 1025 flush_tbuf(); 1026 hpos += w.to_units() + kk; 1027 return; 1028 } 1029 set_font(tf); 1030 unsigned char c = ci->get_ascii_code(); 1031 if (c == '\0') { 1032 glyph_color(gcol); 1033 fill_color(fcol); 1034 flush_tbuf(); 1035 do_motion(); 1036 check_charinfo(tf, ci); 1037 if (ci->numbered()) { 1038 put('N'); 1039 put(ci->get_number()); 1040 } 1041 else { 1042 put('C'); 1043 const char *s = ci->nm.contents(); 1044 if (s[1] == 0) { 1045 put('\\'); 1046 put(s[0]); 1047 } 1048 else 1049 put(s); 1050 } 1051 put('\n'); 1052 hpos += w.to_units() + kk; 1053 } 1054 else if (tcommand_flag) { 1055 if (tbuf_len > 0 && hpos == output_hpos && vpos == output_vpos 1056 && (!gcol || gcol == current_glyph_color) 1057 && (!fcol || fcol == current_fill_color) 1058 && kk == tbuf_kern 1059 && tbuf_len < TBUF_SIZE) { 1060 check_charinfo(tf, ci); 1061 tbuf[tbuf_len++] = c; 1062 output_hpos += w.to_units() + kk; 1063 hpos = output_hpos; 1064 return; 1065 } 1066 glyph_color(gcol); 1067 fill_color(fcol); 1068 flush_tbuf(); 1069 do_motion(); 1070 check_charinfo(tf, ci); 1071 tbuf[tbuf_len++] = c; 1072 output_hpos += w.to_units() + kk; 1073 tbuf_kern = kk; 1074 hpos = output_hpos; 1075 } 1076 else { 1077 // flush_tbuf(); 1078 int n = hpos - output_hpos; 1079 check_charinfo(tf, ci); 1080 // check_output_limits(output_hpos, output_vpos); 1081 if (vpos == output_vpos 1082 && (!gcol || gcol == current_glyph_color) 1083 && (!fcol || fcol == current_fill_color) 1084 && n > 0 && n < 100 && !force_motion) { 1085 put(char(n/10 + '0')); 1086 put(char(n%10 + '0')); 1087 put(c); 1088 output_hpos = hpos; 1089 } 1090 else { 1091 glyph_color(gcol); 1092 fill_color(fcol); 1093 do_motion(); 1094 put('c'); 1095 put(c); 1096 } 1097 hpos += w.to_units() + kk; 1098 } 1099} 1100 1101void troff_output_file::put_char(charinfo *ci, tfont *tf, 1102 color *gcol, color *fcol) 1103{ 1104 flush_tbuf(); 1105 if (!is_on()) 1106 return; 1107 set_font(tf); 1108 unsigned char c = ci->get_ascii_code(); 1109 if (c == '\0') { 1110 glyph_color(gcol); 1111 fill_color(fcol); 1112 flush_tbuf(); 1113 do_motion(); 1114 if (ci->numbered()) { 1115 put('N'); 1116 put(ci->get_number()); 1117 } 1118 else { 1119 put('C'); 1120 const char *s = ci->nm.contents(); 1121 if (s[1] == 0) { 1122 put('\\'); 1123 put(s[0]); 1124 } 1125 else 1126 put(s); 1127 } 1128 put('\n'); 1129 } 1130 else { 1131 int n = hpos - output_hpos; 1132 if (vpos == output_vpos 1133 && (!gcol || gcol == current_glyph_color) 1134 && (!fcol || fcol == current_fill_color) 1135 && n > 0 && n < 100) { 1136 put(char(n/10 + '0')); 1137 put(char(n%10 + '0')); 1138 put(c); 1139 output_hpos = hpos; 1140 } 1141 else { 1142 glyph_color(gcol); 1143 fill_color(fcol); 1144 flush_tbuf(); 1145 do_motion(); 1146 put('c'); 1147 put(c); 1148 } 1149 } 1150} 1151 1152// set_font calls `flush_tbuf' if necessary. 1153 1154void troff_output_file::set_font(tfont *tf) 1155{ 1156 if (current_tfont == tf) 1157 return; 1158 flush_tbuf(); 1159 int n = tf->get_input_position(); 1160 symbol nm = tf->get_name(); 1161 if (n >= nfont_positions || font_position[n] != nm) { 1162 put("x font "); 1163 put(n); 1164 put(' '); 1165 put(nm.contents()); 1166 put('\n'); 1167 if (n >= nfont_positions) { 1168 int old_nfont_positions = nfont_positions; 1169 symbol *old_font_position = font_position; 1170 nfont_positions *= 3; 1171 nfont_positions /= 2; 1172 if (nfont_positions <= n) 1173 nfont_positions = n + 10; 1174 font_position = new symbol[nfont_positions]; 1175 memcpy(font_position, old_font_position, 1176 old_nfont_positions*sizeof(symbol)); 1177 a_delete old_font_position; 1178 } 1179 font_position[n] = nm; 1180 } 1181 if (current_font_number != n) { 1182 put('f'); 1183 put(n); 1184 put('\n'); 1185 current_font_number = n; 1186 } 1187 int size = tf->get_size().to_scaled_points(); 1188 if (current_size != size) { 1189 put('s'); 1190 put(size); 1191 put('\n'); 1192 current_size = size; 1193 } 1194 int slant = tf->get_slant(); 1195 if (current_slant != slant) { 1196 put("x Slant "); 1197 put(slant); 1198 put('\n'); 1199 current_slant = slant; 1200 } 1201 int height = tf->get_height(); 1202 if (current_height != height) { 1203 put("x Height "); 1204 put(height == 0 ? current_size : height); 1205 put('\n'); 1206 current_height = height; 1207 } 1208 current_tfont = tf; 1209} 1210 1211// fill_color calls `flush_tbuf' and `do_motion' if necessary. 1212 1213void troff_output_file::fill_color(color *col) 1214{ 1215 if (!col || current_fill_color == col) 1216 return; 1217 current_fill_color = col; 1218 if (!color_flag) 1219 return; 1220 flush_tbuf(); 1221 do_motion(); 1222 put("DF"); 1223 unsigned int components[4]; 1224 color_scheme cs; 1225 cs = col->get_components(components); 1226 switch (cs) { 1227 case DEFAULT: 1228 put('d'); 1229 break; 1230 case RGB: 1231 put("r "); 1232 put(Red); 1233 put(' '); 1234 put(Green); 1235 put(' '); 1236 put(Blue); 1237 break; 1238 case CMY: 1239 put("c "); 1240 put(Cyan); 1241 put(' '); 1242 put(Magenta); 1243 put(' '); 1244 put(Yellow); 1245 break; 1246 case CMYK: 1247 put("k "); 1248 put(Cyan); 1249 put(' '); 1250 put(Magenta); 1251 put(' '); 1252 put(Yellow); 1253 put(' '); 1254 put(Black); 1255 break; 1256 case GRAY: 1257 put("g "); 1258 put(Gray); 1259 break; 1260 } 1261 put('\n'); 1262} 1263 1264// glyph_color calls `flush_tbuf' and `do_motion' if necessary. 1265 1266void troff_output_file::glyph_color(color *col) 1267{ 1268 if (!col || current_glyph_color == col) 1269 return; 1270 current_glyph_color = col; 1271 if (!color_flag) 1272 return; 1273 flush_tbuf(); 1274 // grotty doesn't like a color command if the vertical position is zero. 1275 do_motion(); 1276 put("m"); 1277 unsigned int components[4]; 1278 color_scheme cs; 1279 cs = col->get_components(components); 1280 switch (cs) { 1281 case DEFAULT: 1282 put('d'); 1283 break; 1284 case RGB: 1285 put("r "); 1286 put(Red); 1287 put(' '); 1288 put(Green); 1289 put(' '); 1290 put(Blue); 1291 break; 1292 case CMY: 1293 put("c "); 1294 put(Cyan); 1295 put(' '); 1296 put(Magenta); 1297 put(' '); 1298 put(Yellow); 1299 break; 1300 case CMYK: 1301 put("k "); 1302 put(Cyan); 1303 put(' '); 1304 put(Magenta); 1305 put(' '); 1306 put(Yellow); 1307 put(' '); 1308 put(Black); 1309 break; 1310 case GRAY: 1311 put("g "); 1312 put(Gray); 1313 break; 1314 } 1315 put('\n'); 1316} 1317 1318void troff_output_file::add_to_tag_list(string s) 1319{ 1320 if (tag_list == string("")) 1321 tag_list = s; 1322 else { 1323 tag_list += string("\n"); 1324 tag_list += s; 1325 } 1326} 1327 1328// determine_line_limits - works out the smallest box which will contain 1329// the entity, code, built from the point array. 1330void troff_output_file::determine_line_limits(char code, hvpair *point, 1331 int npoints) 1332{ 1333 int i, x, y; 1334 1335 if (!is_on()) 1336 return; 1337 1338 switch (code) { 1339 case 'c': 1340 case 'C': 1341 // only the h field is used when defining a circle 1342 check_output_limits(output_hpos, 1343 output_vpos - point[0].h.to_units()/2); 1344 check_output_limits(output_hpos + point[0].h.to_units(), 1345 output_vpos + point[0].h.to_units()/2); 1346 break; 1347 case 'E': 1348 case 'e': 1349 check_output_limits(output_hpos, 1350 output_vpos - point[0].v.to_units()/2); 1351 check_output_limits(output_hpos + point[0].h.to_units(), 1352 output_vpos + point[0].v.to_units()/2); 1353 break; 1354 case 'P': 1355 case 'p': 1356 x = output_hpos; 1357 y = output_vpos; 1358 check_output_limits(x, y); 1359 for (i = 0; i < npoints; i++) { 1360 x += point[i].h.to_units(); 1361 y += point[i].v.to_units(); 1362 check_output_limits(x, y); 1363 } 1364 break; 1365 case 't': 1366 x = output_hpos; 1367 y = output_vpos; 1368 for (i = 0; i < npoints; i++) { 1369 x += point[i].h.to_units(); 1370 y += point[i].v.to_units(); 1371 check_output_limits(x, y); 1372 } 1373 break; 1374 case 'a': 1375 double c[2]; 1376 int p[4]; 1377 int minx, miny, maxx, maxy; 1378 x = output_hpos; 1379 y = output_vpos; 1380 p[0] = point[0].h.to_units(); 1381 p[1] = point[0].v.to_units(); 1382 p[2] = point[1].h.to_units(); 1383 p[3] = point[1].v.to_units(); 1384 if (adjust_arc_center(p, c)) { 1385 check_output_arc_limits(x, y, 1386 p[0], p[1], p[2], p[3], 1387 c[0], c[1], 1388 &minx, &maxx, &miny, &maxy); 1389 check_output_limits(minx, miny); 1390 check_output_limits(maxx, maxy); 1391 break; 1392 } 1393 // fall through 1394 case 'l': 1395 x = output_hpos; 1396 y = output_vpos; 1397 check_output_limits(x, y); 1398 for (i = 0; i < npoints; i++) { 1399 x += point[i].h.to_units(); 1400 y += point[i].v.to_units(); 1401 check_output_limits(x, y); 1402 } 1403 break; 1404 default: 1405 x = output_hpos; 1406 y = output_vpos; 1407 for (i = 0; i < npoints; i++) { 1408 x += point[i].h.to_units(); 1409 y += point[i].v.to_units(); 1410 check_output_limits(x, y); 1411 } 1412 } 1413} 1414 1415void troff_output_file::draw(char code, hvpair *point, int npoints, 1416 font_size fsize, color *gcol, color *fcol) 1417{ 1418 int i; 1419 glyph_color(gcol); 1420 fill_color(fcol); 1421 flush_tbuf(); 1422 do_motion(); 1423 if (is_on()) { 1424 int size = fsize.to_scaled_points(); 1425 if (current_size != size) { 1426 put('s'); 1427 put(size); 1428 put('\n'); 1429 current_size = size; 1430 current_tfont = 0; 1431 } 1432 put('D'); 1433 put(code); 1434 if (code == 'c') { 1435 put(' '); 1436 put(point[0].h.to_units()); 1437 } 1438 else 1439 for (i = 0; i < npoints; i++) { 1440 put(' '); 1441 put(point[i].h.to_units()); 1442 put(' '); 1443 put(point[i].v.to_units()); 1444 } 1445 determine_line_limits(code, point, npoints); 1446 } 1447 1448 for (i = 0; i < npoints; i++) 1449 output_hpos += point[i].h.to_units(); 1450 hpos = output_hpos; 1451 if (code != 'e') { 1452 for (i = 0; i < npoints; i++) 1453 output_vpos += point[i].v.to_units(); 1454 vpos = output_vpos; 1455 } 1456 if (is_on()) 1457 put('\n'); 1458} 1459 1460void troff_output_file::really_on() 1461{ 1462 flush_tbuf(); 1463 force_motion = 1; 1464 do_motion(); 1465} 1466 1467void troff_output_file::really_off() 1468{ 1469 flush_tbuf(); 1470} 1471 1472void troff_output_file::really_put_filename(const char *filename) 1473{ 1474 flush_tbuf(); 1475 put("F "); 1476 put(filename); 1477 put('\n'); 1478} 1479 1480void troff_output_file::really_begin_page(int pageno, vunits page_length) 1481{ 1482 flush_tbuf(); 1483 if (begun_page) { 1484 if (page_length > V0) { 1485 put('V'); 1486 put(page_length.to_units()); 1487 put('\n'); 1488 } 1489 } 1490 else 1491 begun_page = 1; 1492 current_tfont = 0; 1493 current_font_number = -1; 1494 current_size = 0; 1495 // current_height = 0; 1496 // current_slant = 0; 1497 hpos = 0; 1498 vpos = 0; 1499 output_hpos = 0; 1500 output_vpos = 0; 1501 force_motion = 1; 1502 for (int i = 0; i < nfont_positions; i++) 1503 font_position[i] = NULL_SYMBOL; 1504 put('p'); 1505 put(pageno); 1506 put('\n'); 1507} 1508 1509void troff_output_file::really_copy_file(hunits x, vunits y, 1510 const char *filename) 1511{ 1512 moveto(x, y); 1513 flush_tbuf(); 1514 do_motion(); 1515 errno = 0; 1516 FILE *ifp = include_search_path.open_file_cautious(filename); 1517 if (ifp == 0) 1518 error("can't open `%1': %2", filename, strerror(errno)); 1519 else { 1520 int c; 1521 while ((c = getc(ifp)) != EOF) 1522 put(char(c)); 1523 fclose(ifp); 1524 } 1525 force_motion = 1; 1526 current_size = 0; 1527 current_tfont = 0; 1528 current_font_number = -1; 1529 for (int i = 0; i < nfont_positions; i++) 1530 font_position[i] = NULL_SYMBOL; 1531} 1532 1533void troff_output_file::really_transparent_char(unsigned char c) 1534{ 1535 put(c); 1536} 1537 1538troff_output_file::~troff_output_file() 1539{ 1540 a_delete font_position; 1541} 1542 1543void troff_output_file::trailer(vunits page_length) 1544{ 1545 flush_tbuf(); 1546 if (page_length > V0) { 1547 put("x trailer\n"); 1548 put('V'); 1549 put(page_length.to_units()); 1550 put('\n'); 1551 } 1552 put("x stop\n"); 1553} 1554 1555troff_output_file::troff_output_file() 1556: current_slant(0), current_height(0), current_fill_color(0), 1557 current_glyph_color(0), nfont_positions(10), tbuf_len(0), begun_page(0), 1558 cur_div_level(0) 1559{ 1560 font_position = new symbol[nfont_positions]; 1561 put("x T "); 1562 put(device); 1563 put('\n'); 1564 put("x res "); 1565 put(units_per_inch); 1566 put(' '); 1567 put(hresolution); 1568 put(' '); 1569 put(vresolution); 1570 put('\n'); 1571 put("x init\n"); 1572} 1573 1574/* output_file */ 1575 1576output_file *the_output = 0; 1577 1578output_file::output_file() 1579{ 1580} 1581 1582output_file::~output_file() 1583{ 1584} 1585 1586void output_file::trailer(vunits) 1587{ 1588} 1589 1590void output_file::put_filename(const char *) 1591{ 1592} 1593 1594void output_file::on() 1595{ 1596} 1597 1598void output_file::off() 1599{ 1600} 1601 1602real_output_file::real_output_file() 1603: printing(0), output_on(1) 1604{ 1605#ifndef POPEN_MISSING 1606 if (pipe_command) { 1607 if ((fp = popen(pipe_command, POPEN_WT)) != 0) { 1608 piped = 1; 1609 return; 1610 } 1611 error("pipe open failed: %1", strerror(errno)); 1612 } 1613 piped = 0; 1614#endif /* not POPEN_MISSING */ 1615 fp = stdout; 1616} 1617 1618real_output_file::~real_output_file() 1619{ 1620 if (!fp) 1621 return; 1622 // To avoid looping, set fp to 0 before calling fatal(). 1623 if (ferror(fp) || fflush(fp) < 0) { 1624 fp = 0; 1625 fatal("error writing output file"); 1626 } 1627#ifndef POPEN_MISSING 1628 if (piped) { 1629 int result = pclose(fp); 1630 fp = 0; 1631 if (result < 0) 1632 fatal("pclose failed"); 1633 if (!WIFEXITED(result)) 1634 error("output process `%1' got fatal signal %2", 1635 pipe_command, 1636 WIFSIGNALED(result) ? WTERMSIG(result) : WSTOPSIG(result)); 1637 else { 1638 int exit_status = WEXITSTATUS(result); 1639 if (exit_status != 0) 1640 error("output process `%1' exited with status %2", 1641 pipe_command, exit_status); 1642 } 1643 } 1644 else 1645#endif /* not POPEN MISSING */ 1646 if (fclose(fp) < 0) { 1647 fp = 0; 1648 fatal("error closing output file"); 1649 } 1650} 1651 1652void real_output_file::flush() 1653{ 1654 if (fflush(fp) < 0) 1655 fatal("error writing output file"); 1656} 1657 1658int real_output_file::is_printing() 1659{ 1660 return printing; 1661} 1662 1663void real_output_file::begin_page(int pageno, vunits page_length) 1664{ 1665 printing = in_output_page_list(pageno); 1666 if (printing) 1667 really_begin_page(pageno, page_length); 1668} 1669 1670void real_output_file::copy_file(hunits x, vunits y, const char *filename) 1671{ 1672 if (printing && output_on) 1673 really_copy_file(x, y, filename); 1674 check_output_limits(x.to_units(), y.to_units()); 1675} 1676 1677void real_output_file::transparent_char(unsigned char c) 1678{ 1679 if (printing && output_on) 1680 really_transparent_char(c); 1681} 1682 1683void real_output_file::print_line(hunits x, vunits y, node *n, 1684 vunits before, vunits after, hunits width) 1685{ 1686 if (printing) 1687 really_print_line(x, y, n, before, after, width); 1688 delete_node_list(n); 1689} 1690 1691void real_output_file::really_copy_file(hunits, vunits, const char *) 1692{ 1693 // do nothing 1694} 1695 1696void real_output_file::put_filename(const char *filename) 1697{ 1698 really_put_filename(filename); 1699} 1700 1701void real_output_file::really_put_filename(const char *) 1702{ 1703} 1704 1705void real_output_file::on() 1706{ 1707 really_on(); 1708 if (output_on == 0) 1709 output_on = 1; 1710} 1711 1712void real_output_file::off() 1713{ 1714 really_off(); 1715 output_on = 0; 1716} 1717 1718int real_output_file::is_on() 1719{ 1720 return output_on; 1721} 1722 1723void real_output_file::really_on() 1724{ 1725} 1726 1727void real_output_file::really_off() 1728{ 1729} 1730 1731/* ascii_output_file */ 1732 1733void ascii_output_file::really_transparent_char(unsigned char c) 1734{ 1735 putc(c, fp); 1736} 1737 1738void ascii_output_file::really_print_line(hunits, vunits, node *n, 1739 vunits, vunits, hunits) 1740{ 1741 while (n != 0) { 1742 n->ascii_print(this); 1743 n = n->next; 1744 } 1745 fputc('\n', fp); 1746} 1747 1748void ascii_output_file::really_begin_page(int /*pageno*/, vunits /*page_length*/) 1749{ 1750 fputs("<beginning of page>\n", fp); 1751} 1752 1753ascii_output_file::ascii_output_file() 1754{ 1755} 1756 1757/* suppress_output_file */ 1758 1759suppress_output_file::suppress_output_file() 1760{ 1761} 1762 1763void suppress_output_file::really_print_line(hunits, vunits, node *, vunits, vunits, hunits) 1764{ 1765} 1766 1767void suppress_output_file::really_begin_page(int, vunits) 1768{ 1769} 1770 1771void suppress_output_file::really_transparent_char(unsigned char) 1772{ 1773} 1774 1775/* glyphs, ligatures, kerns, discretionary breaks */ 1776 1777class charinfo_node : public node { 1778protected: 1779 charinfo *ci; 1780public: 1781 charinfo_node(charinfo *, statem *, int, node * = 0); 1782 int ends_sentence(); 1783 int overlaps_vertically(); 1784 int overlaps_horizontally(); 1785}; 1786 1787charinfo_node::charinfo_node(charinfo *c, statem *s, int pop, node *x) 1788: node(x, s, pop), ci(c) 1789{ 1790} 1791 1792int charinfo_node::ends_sentence() 1793{ 1794 if (ci->ends_sentence()) 1795 return 1; 1796 else if (ci->transparent()) 1797 return 2; 1798 else 1799 return 0; 1800} 1801 1802int charinfo_node::overlaps_horizontally() 1803{ 1804 return ci->overlaps_horizontally(); 1805} 1806 1807int charinfo_node::overlaps_vertically() 1808{ 1809 return ci->overlaps_vertically(); 1810} 1811 1812class glyph_node : public charinfo_node { 1813 static glyph_node *free_list; 1814protected: 1815 tfont *tf; 1816 color *gcol; 1817 color *fcol; /* this is needed for grotty */ 1818#ifdef STORE_WIDTH 1819 hunits wid; 1820 glyph_node(charinfo *, tfont *, color *, color *, hunits, 1821 statem *, int, node * = 0); 1822#endif 1823public: 1824 void *operator new(size_t); 1825 void operator delete(void *); 1826 glyph_node(charinfo *, tfont *, color *, color *, 1827 statem *, int, node * = 0); 1828 ~glyph_node() {} 1829 node *copy(); 1830 node *merge_glyph_node(glyph_node *); 1831 node *merge_self(node *); 1832 hunits width(); 1833 node *last_char_node(); 1834 units size(); 1835 void vertical_extent(vunits *, vunits *); 1836 hunits subscript_correction(); 1837 hunits italic_correction(); 1838 hunits left_italic_correction(); 1839 hunits skew(); 1840 hyphenation_type get_hyphenation_type(); 1841 tfont *get_tfont(); 1842 color *get_glyph_color(); 1843 color *get_fill_color(); 1844 void tprint(troff_output_file *); 1845 void zero_width_tprint(troff_output_file *); 1846 hyphen_list *get_hyphen_list(hyphen_list *, int *); 1847 node *add_self(node *, hyphen_list **); 1848 void ascii_print(ascii_output_file *); 1849 void asciify(macro *); 1850 int character_type(); 1851 int same(node *); 1852 const char *type(); 1853 int force_tprint(); 1854 int is_tag(); 1855 void debug_node(); 1856}; 1857 1858glyph_node *glyph_node::free_list = 0; 1859 1860class ligature_node : public glyph_node { 1861 node *n1; 1862 node *n2; 1863#ifdef STORE_WIDTH 1864 ligature_node(charinfo *, tfont *, color *, color *, hunits, 1865 node *, node *, statem *, int, node * = 0); 1866#endif 1867public: 1868 void *operator new(size_t); 1869 void operator delete(void *); 1870 ligature_node(charinfo *, tfont *, color *, color *, 1871 node *, node *, statem *, int, node * = 0); 1872 ~ligature_node(); 1873 node *copy(); 1874 node *add_self(node *, hyphen_list **); 1875 hyphen_list *get_hyphen_list(hyphen_list *, int *); 1876 void ascii_print(ascii_output_file *); 1877 void asciify(macro *); 1878 int same(node *); 1879 const char *type(); 1880 int force_tprint(); 1881 int is_tag(); 1882}; 1883 1884class kern_pair_node : public node { 1885 hunits amount; 1886 node *n1; 1887 node *n2; 1888public: 1889 kern_pair_node(hunits, node *, node *, statem *, int, node * = 0); 1890 ~kern_pair_node(); 1891 node *copy(); 1892 node *merge_glyph_node(glyph_node *); 1893 node *add_self(node *, hyphen_list **); 1894 hyphen_list *get_hyphen_list(hyphen_list *, int *); 1895 node *add_discretionary_hyphen(); 1896 hunits width(); 1897 node *last_char_node(); 1898 hunits italic_correction(); 1899 hunits subscript_correction(); 1900 void tprint(troff_output_file *); 1901 hyphenation_type get_hyphenation_type(); 1902 int ends_sentence(); 1903 void ascii_print(ascii_output_file *); 1904 void asciify(macro *); 1905 int same(node *); 1906 const char *type(); 1907 int force_tprint(); 1908 int is_tag(); 1909 void vertical_extent(vunits *, vunits *); 1910}; 1911 1912class dbreak_node : public node { 1913 node *none; 1914 node *pre; 1915 node *post; 1916public: 1917 dbreak_node(node *, node *, statem *, int, node * = 0); 1918 ~dbreak_node(); 1919 node *copy(); 1920 node *merge_glyph_node(glyph_node *); 1921 node *add_discretionary_hyphen(); 1922 hunits width(); 1923 node *last_char_node(); 1924 hunits italic_correction(); 1925 hunits subscript_correction(); 1926 void tprint(troff_output_file *); 1927 breakpoint *get_breakpoints(hunits width, int ns, breakpoint *rest = 0, 1928 int is_inner = 0); 1929 int nbreaks(); 1930 int ends_sentence(); 1931 void split(int, node **, node **); 1932 hyphenation_type get_hyphenation_type(); 1933 void ascii_print(ascii_output_file *); 1934 void asciify(macro *); 1935 int same(node *); 1936 const char *type(); 1937 int force_tprint(); 1938 int is_tag(); 1939}; 1940 1941void *glyph_node::operator new(size_t n) 1942{ 1943 assert(n == sizeof(glyph_node)); 1944 if (!free_list) { 1945 const int BLOCK = 1024; 1946 free_list = (glyph_node *)new char[sizeof(glyph_node)*BLOCK]; 1947 for (int i = 0; i < BLOCK - 1; i++) 1948 free_list[i].next = free_list + i + 1; 1949 free_list[BLOCK-1].next = 0; 1950 } 1951 glyph_node *p = free_list; 1952 free_list = (glyph_node *)(free_list->next); 1953 p->next = 0; 1954 return p; 1955} 1956 1957void *ligature_node::operator new(size_t n) 1958{ 1959 return new char[n]; 1960} 1961 1962void glyph_node::operator delete(void *p) 1963{ 1964 if (p) { 1965 ((glyph_node *)p)->next = free_list; 1966 free_list = (glyph_node *)p; 1967 } 1968} 1969 1970void ligature_node::operator delete(void *p) 1971{ 1972 delete[] (char *)p; 1973} 1974 1975glyph_node::glyph_node(charinfo *c, tfont *t, color *gc, color *fc, 1976 statem *s, int pop, node *x) 1977: charinfo_node(c, s, pop, x), tf(t), gcol(gc), fcol(fc) 1978{ 1979#ifdef STORE_WIDTH 1980 wid = tf->get_width(ci); 1981#endif 1982} 1983 1984#ifdef STORE_WIDTH 1985glyph_node::glyph_node(charinfo *c, tfont *t, 1986 color *gc, color *fc, hunits w, 1987 statem *s, int pop, node *x) 1988: charinfo_node(c, s, pop, x), tf(t), gcol(gc), fcol(fc), wid(w) 1989{ 1990} 1991#endif 1992 1993node *glyph_node::copy() 1994{ 1995#ifdef STORE_WIDTH 1996 return new glyph_node(ci, tf, gcol, fcol, wid, state, div_nest_level); 1997#else 1998 return new glyph_node(ci, tf, gcol, fcol, state, div_nest_level); 1999#endif 2000} 2001 2002node *glyph_node::merge_self(node *nd) 2003{ 2004 return nd->merge_glyph_node(this); 2005} 2006 2007int glyph_node::character_type() 2008{ 2009 return tf->get_character_type(ci); 2010} 2011 2012node *glyph_node::add_self(node *n, hyphen_list **p) 2013{ 2014 assert(ci->get_hyphenation_code() == (*p)->hyphenation_code); 2015 next = 0; 2016 node *nn; 2017 if (n == 0 || (nn = n->merge_glyph_node(this)) == 0) { 2018 next = n; 2019 nn = this; 2020 } 2021 if ((*p)->hyphen) 2022 nn = nn->add_discretionary_hyphen(); 2023 hyphen_list *pp = *p; 2024 *p = (*p)->next; 2025 delete pp; 2026 return nn; 2027} 2028 2029units glyph_node::size() 2030{ 2031 return tf->get_size().to_units(); 2032} 2033 2034hyphen_list *glyph_node::get_hyphen_list(hyphen_list *tail, int *count) 2035{ 2036 (*count)++; 2037 return new hyphen_list(ci->get_hyphenation_code(), tail); 2038} 2039 2040tfont *node::get_tfont() 2041{ 2042 return 0; 2043} 2044 2045tfont *glyph_node::get_tfont() 2046{ 2047 return tf; 2048} 2049 2050color *node::get_glyph_color() 2051{ 2052 return 0; 2053} 2054 2055color *glyph_node::get_glyph_color() 2056{ 2057 return gcol; 2058} 2059 2060color *node::get_fill_color() 2061{ 2062 return 0; 2063} 2064 2065color *glyph_node::get_fill_color() 2066{ 2067 return fcol; 2068} 2069 2070node *node::merge_glyph_node(glyph_node *) 2071{ 2072 return 0; 2073} 2074 2075node *glyph_node::merge_glyph_node(glyph_node *gn) 2076{ 2077 if (tf == gn->tf && gcol == gn->gcol && fcol == gn->fcol) { 2078 charinfo *lig; 2079 if ((lig = tf->get_lig(ci, gn->ci)) != 0) { 2080 node *next1 = next; 2081 next = 0; 2082 return new ligature_node(lig, tf, gcol, fcol, this, gn, state, 2083 gn->div_nest_level, next1); 2084 } 2085 hunits kern; 2086 if (tf->get_kern(ci, gn->ci, &kern)) { 2087 node *next1 = next; 2088 next = 0; 2089 return new kern_pair_node(kern, this, gn, state, 2090 gn->div_nest_level, next1); 2091 } 2092 } 2093 return 0; 2094} 2095 2096#ifdef STORE_WIDTH 2097inline 2098#endif 2099hunits glyph_node::width() 2100{ 2101#ifdef STORE_WIDTH 2102 return wid; 2103#else 2104 return tf->get_width(ci); 2105#endif 2106} 2107 2108node *glyph_node::last_char_node() 2109{ 2110 return this; 2111} 2112 2113void glyph_node::vertical_extent(vunits *min, vunits *max) 2114{ 2115 *min = -tf->get_char_height(ci); 2116 *max = tf->get_char_depth(ci); 2117} 2118 2119hunits glyph_node::skew() 2120{ 2121 return tf->get_char_skew(ci); 2122} 2123 2124hunits glyph_node::subscript_correction() 2125{ 2126 return tf->get_subscript_correction(ci); 2127} 2128 2129hunits glyph_node::italic_correction() 2130{ 2131 return tf->get_italic_correction(ci); 2132} 2133 2134hunits glyph_node::left_italic_correction() 2135{ 2136 return tf->get_left_italic_correction(ci); 2137} 2138 2139hyphenation_type glyph_node::get_hyphenation_type() 2140{ 2141 return HYPHEN_MIDDLE; 2142} 2143 2144void glyph_node::ascii_print(ascii_output_file *ascii) 2145{ 2146 unsigned char c = ci->get_ascii_code(); 2147 if (c != 0) 2148 ascii->outc(c); 2149 else 2150 ascii->outs(ci->nm.contents()); 2151} 2152 2153void glyph_node::debug_node() 2154{ 2155 unsigned char c = ci->get_ascii_code(); 2156 fprintf(stderr, "{ %s [", type()); 2157 if (c) 2158 fprintf(stderr, "%c", c); 2159 else 2160 fputs(ci->nm.contents(), stderr); 2161 if (push_state) 2162 fprintf(stderr, " <push_state>"); 2163 if (state) 2164 state->display_state(); 2165 fprintf(stderr, " nest level %d", div_nest_level); 2166 fprintf(stderr, "]}\n"); 2167 fflush(stderr); 2168} 2169 2170ligature_node::ligature_node(charinfo *c, tfont *t, color *gc, color *fc, 2171 node *gn1, node *gn2, statem *s, 2172 int pop, node *x) 2173: glyph_node(c, t, gc, fc, s, pop, x), n1(gn1), n2(gn2) 2174{ 2175} 2176 2177#ifdef STORE_WIDTH 2178ligature_node::ligature_node(charinfo *c, tfont *t, color *gc, color *fc, 2179 hunits w, node *gn1, node *gn2, statem *s, 2180 int pop, node *x) 2181: glyph_node(c, t, gc, fc, w, s, pop, x), n1(gn1), n2(gn2) 2182{ 2183} 2184#endif 2185 2186ligature_node::~ligature_node() 2187{ 2188 delete n1; 2189 delete n2; 2190} 2191 2192node *ligature_node::copy() 2193{ 2194#ifdef STORE_WIDTH 2195 return new ligature_node(ci, tf, gcol, fcol, wid, n1->copy(), n2->copy(), 2196 state, div_nest_level); 2197#else 2198 return new ligature_node(ci, tf, gcol, fcol, n1->copy(), n2->copy(), 2199 state, div_nest_level); 2200#endif 2201} 2202 2203void ligature_node::ascii_print(ascii_output_file *ascii) 2204{ 2205 n1->ascii_print(ascii); 2206 n2->ascii_print(ascii); 2207} 2208 2209hyphen_list *ligature_node::get_hyphen_list(hyphen_list *tail, int *count) 2210{ 2211 hyphen_list *hl = n2->get_hyphen_list(tail, count); 2212 return n1->get_hyphen_list(hl, count); 2213} 2214 2215node *ligature_node::add_self(node *n, hyphen_list **p) 2216{ 2217 n = n1->add_self(n, p); 2218 n = n2->add_self(n, p); 2219 n1 = n2 = 0; 2220 delete this; 2221 return n; 2222} 2223 2224kern_pair_node::kern_pair_node(hunits n, node *first, node *second, 2225 statem* s, int pop, node *x) 2226: node(x, s, pop), amount(n), n1(first), n2(second) 2227{ 2228} 2229 2230dbreak_node::dbreak_node(node *n, node *p, statem *s, int pop, node *x) 2231: node(x, s, pop), none(n), pre(p), post(0) 2232{ 2233} 2234 2235node *dbreak_node::merge_glyph_node(glyph_node *gn) 2236{ 2237 glyph_node *gn2 = (glyph_node *)gn->copy(); 2238 node *new_none = none ? none->merge_glyph_node(gn) : 0; 2239 node *new_post = post ? post->merge_glyph_node(gn2) : 0; 2240 if (new_none == 0 && new_post == 0) { 2241 delete gn2; 2242 return 0; 2243 } 2244 if (new_none != 0) 2245 none = new_none; 2246 else { 2247 gn->next = none; 2248 none = gn; 2249 } 2250 if (new_post != 0) 2251 post = new_post; 2252 else { 2253 gn2->next = post; 2254 post = gn2; 2255 } 2256 return this; 2257} 2258 2259node *kern_pair_node::merge_glyph_node(glyph_node *gn) 2260{ 2261 node *nd = n2->merge_glyph_node(gn); 2262 if (nd == 0) 2263 return 0; 2264 n2 = nd; 2265 nd = n2->merge_self(n1); 2266 if (nd) { 2267 nd->next = next; 2268 n1 = 0; 2269 n2 = 0; 2270 delete this; 2271 return nd; 2272 } 2273 return this; 2274} 2275 2276hunits kern_pair_node::italic_correction() 2277{ 2278 return n2->italic_correction(); 2279} 2280 2281hunits kern_pair_node::subscript_correction() 2282{ 2283 return n2->subscript_correction(); 2284} 2285 2286void kern_pair_node::vertical_extent(vunits *min, vunits *max) 2287{ 2288 n1->vertical_extent(min, max); 2289 vunits min2, max2; 2290 n2->vertical_extent(&min2, &max2); 2291 if (min2 < *min) 2292 *min = min2; 2293 if (max2 > *max) 2294 *max = max2; 2295} 2296 2297node *kern_pair_node::add_discretionary_hyphen() 2298{ 2299 tfont *tf = n2->get_tfo…
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