summaryrefslogtreecommitdiff
path: root/Build/source/texk/web2c/pdftexdir/pdftex.ch
blob: 3acc599c4d38e2ed86616b4eba8a2ec9a35e427a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
%
% Copyright (c) 1996-2008 Han The Thanh, <thanh@pdftex.org>
%
% This file is part of pdfTeX.
%
% pdfTeX is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% pdfTeX is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License along with
% pdfTeX; if not, write to the Free Software Foundation, Inc., 51 Franklin
% Street, Fifth Floor, Boston, MA 02110-1301 USA.
%
@x [0.0] l.83 - WEAVE: we want the whole file
  \def\?##1]{\hbox{Changes to \hbox to 1em{\hfil##1}.\ }}
  }
\let\maybe=\iffalse
@y 83
  \def\?##1]{\hbox{Changes to \hbox to 1em{\hfil##1}.\ }}
  }
\let\maybe=\iftrue
@z

% Change file to assist in creating the web2c-specific change file.
% This one resolves inconsistencies between tex.ch and tex.ech.
% Public domain.

@x [1] m.2 l.188 - banner
@d banner==TeX_banner
@d banner_k==TeX_banner_k
@y
@d banner==pdfTeX_banner
@d banner_k==pdfTeX_banner
@z

@x
@!m,@!n:text_char; {characters input from |pool_file|}
@!g:str_number; {garbage}
@!a:integer; {accumulator for check sum}
@!c:boolean; {check sum has been checked}
@y
@!g:str_number; {garbage}
@z

@x
@ @d bad_pool(#)==begin wake_up_terminal; write_ln(term_out,#);
  a_close(pool_file); get_strings_started:=false; return;
  end
@<Read the other strings...@>=
name_length := strlen (pool_name);
name_of_file := xmalloc_array (ASCII_code, name_length + 1);
strcpy (stringcast(name_of_file+1), pool_name); {copy the string}
if a_open_in (pool_file, kpse_texpool_format) then
  begin c:=false;
  repeat @<Read one string, but return |false| if the
    string memory space is getting too tight for comfort@>;
  until c;
  a_close(pool_file); get_strings_started:=true;
  end
else  bad_pool('! I can''t read ', pool_name, '; bad path?')
@.I can't read TEX.POOL@>

@ @<Read one string...@>=
begin if eof(pool_file) then bad_pool('! ', pool_name, ' has no check sum.');
@.TEX.POOL has no check sum@>
read(pool_file,m); read(pool_file,n); {read two digits of string length}
if m='*' then @<Check the pool check sum@>
else  begin if (xord[m]<"0")or(xord[m]>"9")or@|
      (xord[n]<"0")or(xord[n]>"9") then
    bad_pool('! ', pool_name, ' line doesn''t begin with two digits.');
@.TEX.POOL line doesn't...@>
  l:=xord[m]*10+xord[n]-"0"*11; {compute the length}
  if pool_ptr+l+string_vacancies>pool_size then
    bad_pool('! You have to increase POOLSIZE.');
@.You have to increase POOLSIZE@>
  for k:=1 to l do
    begin if eoln(pool_file) then m:=' '@+else read(pool_file,m);
    append_char(xord[m]);
    end;
  read_ln(pool_file); g:=make_string;
  end;
end

@ The \.{WEB} operation \.{@@\$} denotes the value that should be at the
end of this \.{TEX.POOL} file; any other value means that the wrong pool
file has been loaded.
@^check sum@>

@<Check the pool check sum@>=
begin a:=0; k:=1;
loop@+  begin if (xord[n]<"0")or(xord[n]>"9") then
  bad_pool('! ', pool_name, ' check sum doesn''t have nine digits.');
@.TEX.POOL check sum...@>
  a:=10*a+xord[n]-"0";
  if k=9 then goto done;
  incr(k); read(pool_file,n);
  end;
done: if a<>@$ then
  bad_pool('! ', pool_name, ' doesn''t match; tangle me again (or fix the path).');
@.TEX.POOL doesn't match@>
c:=true;
end
@y
@ @<Read the other strings...@>=
  g := loadpoolstrings((pool_size-string_vacancies));
  if g=0 then begin
     wake_up_terminal; write_ln(term_out,'! You have to increase POOLSIZE.');
     get_strings_started:=false;
     return;
  end;
  get_strings_started:=true;

@ Empty module

@ Empty module
@z

@x
@d frozen_null_font=frozen_control_sequence+11
  {permanent `\.{\\nullfont}'}
@y
@d frozen_null_font=frozen_control_sequence+12
  {permanent `\.{\\nullfont}'}
@z

@x [17.236] l.4960 - first web2c, then e-TeX additional integer parameters
@d int_pars=web2c_int_pars {total number of integer parameters}
@#
@d etex_int_base=tex_int_pars {base for \eTeX's integer parameters}
@y
@d pdftex_first_integer_code = web2c_int_pars {base for \pdfTeX's integer parameters}
@z

% start of tex.pch
@x (MLTeX) l. 12945
      begin i := char_tag(char_info(f)(c));
@y
      begin i := char_tag(orig_char_info(f)(c));
@z

@x (MLTeX) l. 14640
@d is_valid_char(#)==((font_bc[f] <= #) and (# <= font_ec[f]) and
                      char_exists(char_info(f)(#)))
@y
@d is_valid_char(#)==((font_bc[f] <= #) and (# <= font_ec[f]) and
                      char_exists(orig_char_info(f)(#)))
@z

@x (MLTeX) l. 14678
function get_charwidth(f: internal_font_number; c: eight_bits): scaled;
begin
    if is_valid_char(c) then
        get_charwidth := char_width(f)(char_info(f)(c))
    else
        get_charwidth := 0;
end;

function get_charheight(f: internal_font_number; c: eight_bits): scaled;
begin
    if is_valid_char(c) then
        get_charheight := char_height(f)(height_depth(char_info(f)(c)))
    else
        get_charheight := 0;
end;

function get_chardepth(f: internal_font_number; c: eight_bits): scaled;
begin
    if is_valid_char(c) then
        get_chardepth := char_depth(f)(height_depth(char_info(f)(c)))
    else
        get_chardepth := 0;
end;
@y
function get_charwidth(f: internal_font_number; c: eight_bits): scaled;
begin
    if is_valid_char(c) then
        get_charwidth := char_width(f)(orig_char_info(f)(c))
    else
        get_charwidth := 0;
end;

function get_charheight(f: internal_font_number; c: eight_bits): scaled;
begin
    if is_valid_char(c) then
        get_charheight := char_height(f)(height_depth(orig_char_info(f)(c)))
    else
        get_charheight := 0;
end;

function get_chardepth(f: internal_font_number; c: eight_bits): scaled;
begin
    if is_valid_char(c) then
        get_chardepth := char_depth(f)(height_depth(orig_char_info(f)(c)))
    else
        get_chardepth := 0;
end;
@z


@x (MLTeX) l. 17413
label reswitch, move_past, fin_rule, next_p;
@y
label reswitch, move_past, fin_rule, next_p, found, continue;
@z

@x (MLTeX) l. 17462
  if is_valid_char(c) then
      output_one_char(c)
  else
      char_warning(f, c);
  cur_h:=cur_h+char_width(f)(char_info(f)(c));
@y
  if is_valid_char(c) then begin
      output_one_char(c);
      cur_h:=cur_h+char_width(f)(char_info(f)(c));
      goto continue;
  end;
  if mltex_enabled_p then
    @<(\pdfTeX) Output a substitution, |goto continue| if not possible@>;
continue:
@z

@x
@ The |pdf_vlist_out| routine is similar to |pdf_hlist_out|, but a bit simpler.
@y
@ @<(\pdfTeX) Output a substitution, |goto continue| if not possible@>=
  begin
  @<Get substitution information, check it, goto |found|
  if all is ok, otherwise goto |continue|@>;
found: @<Print character substition tracing log@>;
  @<(\pdfTeX) Rebuild character using substitution information@>;
  end

@ @<(\pdfTeX) Rebuild character using substitution information@>=
  base_x_height:=x_height(f);
  base_slant:=slant(f)/float_constant(65536);
@^real division@>
  accent_slant:=base_slant; {slant of accent character font}
  base_width:=char_width(f)(ib_c);
  base_height:=char_height(f)(height_depth(ib_c));
  accent_width:=char_width(f)(ia_c);
  accent_height:=char_height(f)(height_depth(ia_c));
  @/{compute necessary horizontal shift (don't forget slant)}@/
  delta:=round((base_width-accent_width)/float_constant(2)+
            base_height*base_slant-base_x_height*accent_slant);
@^real multiplication@>
@^real addition@>
  @/{1. For centering/horizontal shifting insert a kern node.}@/
  cur_h:=cur_h+delta;
  @/{2. Then insert the accent character possibly shifted up or down.}@/
  if ((base_height<>base_x_height) and (accent_height>0)) then
    begin {the accent must be shifted up or down}
    cur_v:=base_line+(base_x_height-base_height);
    output_one_char(accent_c);
    cur_v:=base_line;
    end
  else begin
    output_one_char(accent_c);
    end;
  cur_h:=cur_h+accent_width;
  @/{3. For centering/horizontal shifting insert another kern node.}@/
  cur_h:=cur_h+(-accent_width-delta);
  @/{4. Output the base character.}@/
  output_one_char(base_c);
  cur_h:=cur_h+base_width;

@ The |pdf_vlist_out| routine is similar to |pdf_hlist_out|, but a bit simpler.
@z

@x [49.1259]
    begin if s>0 then
      begin if s=font_size[f] then goto common_ending;
      end
    else if font_size[f]=xn_over_d(font_dsize[f],-s,1000) then
      goto common_ending;
    end
@y
    begin
    if pdf_font_step[f] = 0 then begin
       if s>0 then
         begin if s=font_size[f] then goto common_ending;
         end
       else if font_size[f]=xn_over_d(font_dsize[f],-s,1000) then
         goto common_ending;
       end
    end
@z

@x (WEB2C!)
param_base:=xmalloc_array(integer, font_max);

undump_things(font_check[null_font], font_ptr+1-null_font);
@y
param_base:=xmalloc_array(integer, font_max);

pdf_char_used:=xmalloc_array(char_used_array, font_max);
pdf_font_size:=xmalloc_array(scaled, font_max);
pdf_font_num:=xmalloc_array(integer, font_max);
pdf_font_map:=xmalloc_array(fm_entry_ptr, font_max);
pdf_font_type:=xmalloc_array(eight_bits, font_max);
pdf_font_attr:=xmalloc_array(str_number, font_max);
pdf_font_blink:=xmalloc_array(internal_font_number, font_max);
pdf_font_elink:=xmalloc_array(internal_font_number, font_max);
pdf_font_stretch:=xmalloc_array(integer, font_max);
pdf_font_shrink:=xmalloc_array(integer, font_max);
pdf_font_step:=xmalloc_array(integer, font_max);
pdf_font_expand_ratio:=xmalloc_array(integer, font_max);
pdf_font_auto_expand:=xmalloc_array(boolean, font_max);
pdf_font_lp_base:=xmalloc_array(integer, font_max);
pdf_font_rp_base:=xmalloc_array(integer, font_max);
pdf_font_ef_base:=xmalloc_array(integer, font_max);
pdf_font_kn_bs_base:=xmalloc_array(integer, font_max);
pdf_font_st_bs_base:=xmalloc_array(integer, font_max);
pdf_font_sh_bs_base:=xmalloc_array(integer, font_max);
pdf_font_kn_bc_base:=xmalloc_array(integer, font_max);
pdf_font_kn_ac_base:=xmalloc_array(integer, font_max);
vf_packet_base:=xmalloc_array(integer, font_max);
vf_default_font:=xmalloc_array(internal_font_number, font_max);
vf_local_font_num:=xmalloc_array(internal_font_number, font_max);
vf_e_fnts:=xmalloc_array(integer, font_max);
vf_i_fnts:=xmalloc_array(internal_font_number, font_max);

for font_k := font_base to font_max do begin
    for k := 0 to 31 do
        pdf_char_used[font_k, k] := 0;
    pdf_font_size[font_k] := 0;
    pdf_font_num[font_k] := 0;
    pdf_font_map[font_k] := 0;
    pdf_font_type[font_k] := new_font_type;
    pdf_font_attr[font_k] := "";
    pdf_font_blink[font_k] := null_font;
    pdf_font_elink[font_k] := null_font;
    pdf_font_stretch[font_k] := null_font;
    pdf_font_shrink[font_k] := null_font;
    pdf_font_step[font_k] := 0;
    pdf_font_expand_ratio[font_k] := 0;
    pdf_font_auto_expand[font_k] := false;
    pdf_font_lp_base[font_k] := 0;
    pdf_font_rp_base[font_k] := 0;
    pdf_font_ef_base[font_k] := 0;
    pdf_font_kn_bs_base[font_k] := 0;
    pdf_font_st_bs_base[font_k] := 0;
    pdf_font_sh_bs_base[font_k] := 0;
    pdf_font_kn_bc_base[font_k] := 0;
    pdf_font_kn_ac_base[font_k] := 0;
end;

make_pdftex_banner;
undump_things(font_check[null_font], font_ptr+1-null_font);
@z

@x [51.1]
  setup_bound_var (0)('hash_extra')(hash_extra);
  setup_bound_var (10000)('expand_depth')(expand_depth);

@y
  setup_bound_var (0)('hash_extra')(hash_extra);
  setup_bound_var (10000)('expand_depth')(expand_depth);
  setup_bound_var (72)('pk_dpi')(pk_dpi);
@z

@x [51.2]
  const_chk (hash_extra);
  if error_line > ssup_error_line then error_line := ssup_error_line;
@y
  const_chk (hash_extra);
  const_chk (obj_tab_size);
  const_chk (pdf_mem_size);
  const_chk (dest_names_size);
  const_chk (pk_dpi);
  if error_line > ssup_error_line then error_line := ssup_error_line;
@z

@x [51.1332] l.24203 (ca.) texarray
  line_stack:=xmalloc_array (integer, max_in_open);
@y
  line_stack:=xmalloc_array (integer, max_in_open);
  eof_seen:=xmalloc_array (boolean, max_in_open);
  grp_stack:=xmalloc_array (save_pointer, max_in_open);
  if_stack:=xmalloc_array (pointer, max_in_open);
@z

@x [51.3]
  hyph_link :=xmalloc_array (hyph_pointer, hyph_size);
@y
  hyph_link :=xmalloc_array (hyph_pointer, hyph_size);
  obj_tab:=xmalloc_array (obj_entry, inf_obj_tab_size); {will grow dynamically}
  pdf_mem:=xmalloc_array (integer, inf_pdf_mem_size); {will grow dynamically}
  dest_names:=xmalloc_array (dest_name_entry, inf_dest_names_size); {will grow dynamically}
  pdf_op_buf:=xmalloc_array (eight_bits, pdf_op_buf_size);
  pdf_os_buf:=xmalloc_array (eight_bits, inf_pdf_os_buf_size); {will grow dynamically}
  pdf_os_objnum:=xmalloc_array (integer, pdf_os_max_objs);
  pdf_os_objoff:=xmalloc_array (integer, pdf_os_max_objs);
@z

@x [51.1337] l.24371 (ca.) texarray
  trie_root:=0; trie_c[0]:=si(0); trie_ptr:=0;
@y
  trie_root:=0; trie_c[0]:=si(0); trie_ptr:=0;
  hyph_root:=0; hyph_start:=0;
@z


@x (WEB2C!)
  param_base:=xmalloc_array(integer, font_max);

  font_ptr:=null_font; fmem_ptr:=7;
@y
param_base:=xmalloc_array(integer, font_max);

pdf_char_used:=xmalloc_array(char_used_array,font_max);
pdf_font_size:=xmalloc_array(scaled,font_max);
pdf_font_num:=xmalloc_array(integer,font_max);
pdf_font_map:=xmalloc_array(fm_entry_ptr,font_max);
pdf_font_type:=xmalloc_array(eight_bits,font_max);
pdf_font_attr:=xmalloc_array(str_number,font_max);
pdf_font_blink:=xmalloc_array(internal_font_number,font_max);
pdf_font_elink:=xmalloc_array(internal_font_number,font_max);
pdf_font_stretch:=xmalloc_array(integer,font_max);
pdf_font_shrink:=xmalloc_array(integer,font_max);
pdf_font_step:=xmalloc_array(integer,font_max);
pdf_font_expand_ratio:=xmalloc_array(integer,font_max);
pdf_font_auto_expand:=xmalloc_array(boolean,font_max);
pdf_font_lp_base:=xmalloc_array(integer,font_max);
pdf_font_rp_base:=xmalloc_array(integer,font_max);
pdf_font_ef_base:=xmalloc_array(integer,font_max);
pdf_font_kn_bs_base:=xmalloc_array(integer, font_max);
pdf_font_st_bs_base:=xmalloc_array(integer, font_max);
pdf_font_sh_bs_base:=xmalloc_array(integer, font_max);
pdf_font_kn_bc_base:=xmalloc_array(integer, font_max);
pdf_font_kn_ac_base:=xmalloc_array(integer, font_max);
vf_packet_base:=xmalloc_array(integer,font_max);
vf_default_font:=xmalloc_array(internal_font_number,font_max);
vf_local_font_num:=xmalloc_array(internal_font_number,font_max);
vf_e_fnts:=xmalloc_array(integer,font_max);
vf_i_fnts:=xmalloc_array(internal_font_number,font_max);

for font_k := font_base to font_max do begin
    for k := 0 to 31 do
        pdf_char_used[font_k, k] := 0;
    pdf_font_size[font_k] := 0;
    pdf_font_num[font_k] := 0;
    pdf_font_map[font_k] := 0;
    pdf_font_type[font_k] := new_font_type;
    pdf_font_attr[font_k] := "";
    pdf_font_blink[font_k] := null_font;
    pdf_font_elink[font_k] := null_font;
    pdf_font_stretch[font_k] := null_font;
    pdf_font_shrink[font_k] := null_font;
    pdf_font_step[font_k] := 0;
    pdf_font_expand_ratio[font_k] := 0;
    pdf_font_auto_expand[font_k] := false;
    pdf_font_lp_base[font_k] := 0;
    pdf_font_rp_base[font_k] := 0;
    pdf_font_ef_base[font_k] := 0;
    pdf_font_kn_bs_base[font_k] := 0;
    pdf_font_st_bs_base[font_k] := 0;
    pdf_font_sh_bs_base[font_k] := 0;
    pdf_font_kn_bc_base[font_k] := 0;
    pdf_font_kn_ac_base[font_k] := 0;
end;

font_ptr:=null_font; fmem_ptr:=7;
make_pdftex_banner;
@z

% i, j, q, and r are unused by TeX but required for pdfTeX
@x [53.1348] (do_extension)
var k:integer; {all-purpose integers}
@!p:pointer; {all-purpose pointers}
@y
var i,@!j,@!k:integer; {all-purpose integers}
@!p,@!q,@!r:pointer; {all-purpose pointers}
@z

@x [53a.1379] l.??? -etex command line switch
@!init if (buffer[loc]="*")and(format_ident=" (INITEX)") then
@y
@!init if (etex_p or(buffer[loc]="*"))and(format_ident=" (INITEX)") then
@z

@x [53a.1379] l.??? -etex command line switch
  incr(loc); eTeX_mode:=1; {enter extended mode}
@y
  if (buffer[loc]="*") then incr(loc);
  eTeX_mode:=1; {enter extended mode}
@z

@x [53a.1383] l.??? -etex command line switch
@!eTeX_mode: 0..1; {identifies compatibility and extended mode}
@y
@!eTeX_mode: 0..1; {identifies compatibility and extended mode}
@!etex_p: boolean; {was the -etex option specified}
@z

@x [53a.1391] l.??? texarray
@!eof_seen : array[1..max_in_open] of boolean; {has eof been seen?}
@y
@!eof_seen : ^boolean; {has eof been seen?}
@z

@x [53a.1506] l.??? texarray
@!grp_stack : array[0..max_in_open] of save_pointer; {initial |cur_boundary|}
@!if_stack : array[0..max_in_open] of pointer; {initial |cond_ptr|}
@y
@!grp_stack : ^save_pointer; {initial |cur_boundary|}
@!if_stack : ^pointer; {initial |cond_ptr|}
@z

@x [53a.1587] l.??? texarray
hyph_root:=0; hyph_start:=0;
@y
@z

@x [54/web2c.???] l.??? needed earlier
replacement, but always existing character |font_bc[f]|.
@^inner loop@>

@<Declare additional functions for ML\TeX@>=
function effective_char(@!err_p:boolean;
@y
replacement, but always existing character |font_bc[f]|.
@^inner loop@>

@<Declare \eTeX\ procedures for sc...@>=
function effective_char(@!err_p:boolean;
@z