File: dvisel.c

package info (click to toggle)
xdvik-ja 22.84.16-j1.40+t1lib-1
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd, wheezy
  • size: 16,628 kB
  • ctags: 10,310
  • sloc: ansic: 88,999; sh: 5,309; makefile: 1,031; perl: 245; lisp: 244
file content (773 lines) | stat: -rw-r--r-- 21,574 bytes parent folder | download
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
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
/*
 * select pages from a DVI file.
 *
 * Copyright (c) 1999
 *      WATANABE Takeshi        watanabe@komadori.planet.sci.kobe-u.ac.jp
 * Copyright (c) 2002-2004 the xdvik development team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT.  IN NO EVENT SHALL ANY AUTHO OF THIS SOFTWARE BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <string.h>
#include <ctype.h>

#include "xdvi-config.h"
#include "dvi.h"
#include "pagesel.h"
#include "dvisel.h"
#include "util.h"
#include "dvi-init.h"
#include "events.h"
#include "dvi-draw.h"
#include "message-window.h"
#include "statusline.h"
#include "print-dialog.h"

/* stack for HTEX / Color stack */
typedef enum { IS_A_HREF, IS_A_COLOR } stackElemT;

/*
 * Length of BOP command, without p[4] (previous BOP pointer):
 * bop c_0[4] ... c_9[4]
 */
static const int BOP_PART_LEN = 1 + 10 * 4;
/*
 * Like above but with p[4]:
 */
static const int BOP_LEN = 1 + 10 * 4 + 4;
/*
 * Lenght of postamble:
 * post p[4] num[4] den[4] mag[4] l[4] u[4] s[2] t[2]
 */
static const int POSTAMBLE_LEN = 1 + 4 * 6 + 2 + 2;
/*
 * Postamble without p[4] (final bop offset) and t[2] (total page number):
 * num[4] den[4] mag[4] l[4] u[4] s[2]
 */
static const int POSTAMBLE_PART_LEN = 4 * 5 + 2; 

static char *dvips_papersize_special = NULL;

/*
 * Struct to save specials that need to be copied verbatim into the output file
 * (things like `draftcopy'; see dvips manual, `Literal headers')
 */
struct literal_headers {
    size_t size;
    char **headers;
};
static struct literal_headers literal_headers = { 0, NULL };

static struct specials_stack color_stack = { 0, NULL};
static struct specials_stack href_stack = { 0, NULL};

/*
  stacks saved from the previous page (i.e. active at the
  beginning of the page)
*/
static struct specials_stack color_save_stack = { 0, NULL };
static struct specials_stack href_save_stack = { 0, NULL };

static void
push_stack(struct specials_stack *stack, const char *content)
{
    stack->items = xrealloc(stack->items, (stack->stack_len + 1) * sizeof *(stack->items));
    stack->items[stack->stack_len].content = xstrdup(content);
    stack->stack_len++;
}

static Boolean
stack_contains_item(struct specials_stack *stack, const char *str)
{
    size_t i;
    for (i = 0; i < stack->stack_len; i++) {
	if (strcmp(str, stack->items[i].content) == 0) {
	    return True;
	}
    }
    return False;
}

static void
pop_stack(struct specials_stack *stack)
{
    ASSERT(stack->stack_len >= 1, "Attempt to pop empty stack");
    free(stack->items[stack->stack_len - 1].content);
    stack->stack_len--;
}

static void
empty_stack(struct specials_stack *stack)
{
    while(stack->stack_len > 0) {
	pop_stack(stack);
    }
}

/*
  This is used instead of struct tn, and struct font* from dvi-init.h,
  since it appears that we don't need all the information from there.
*/
static struct fontinfo {
    long TeXnumber;
    unsigned char info[14];
    char *fontname;
    struct fontinfo *next;
    Boolean used;
} *fontinfo_head;

#define PutFour(num, fp) {		\
    putc(((num) >> 24) & 0xff, (fp));	\
    putc(((num) >> 16) & 0xff, (fp));	\
    putc(((num) >> 8)  & 0xff, (fp));	\
    putc( (num)        & 0xff, (fp));	\
}

#define CopyNum(fin, fout, num) {		\
    int m = num;				\
    while (--m >= 0) putc(getc(fin), fout);	\
}

static void
FontWrite(FILE *fout, struct fontinfo *fontp, long *fout_pos)
{
    if (fontp->TeXnumber > 0xff) {
	if (fontp->TeXnumber > 0xffff) {
	    if (fontp->TeXnumber > 0xffffff) {
		putc(FNTDEF4, fout);
		putc((fontp->TeXnumber >> 24) & 0xff, fout);
		(*fout_pos)++;
	    }
	    else {
		putc(FNTDEF3, fout);
	    }
	    putc((fontp->TeXnumber >> 16) & 0xff, fout);
	    (*fout_pos)++;
	}
	else {
	    putc(FNTDEF2, fout);
	}
	putc((fontp->TeXnumber >> 8) & 0xff, fout);
	(*fout_pos)++;
    }
    else {
	putc(FNTDEF1, fout);
    }
    putc(fontp->TeXnumber & 0xff, fout);
    (void)fwrite(fontp->info, sizeof(char), 14, fout);
    (void)fwrite(fontp->fontname, sizeof(char), fontp->info[12] + fontp->info[13], fout);
    (*fout_pos) += 2 + 14 + fontp->info[12] + fontp->info[13];
}

/*
  Invoked by spcl_scan; saves file names referenced by special commands
  into the `warn_files' field of `info'.
*/
static Boolean
scan_for_included_files(char *special, int str_len, void *my_info)
{
    struct select_pages_info *info = (struct select_pages_info *)my_info;
    UNUSED(str_len);
    if (info->warn_files.items == NULL) /* no info needed, e.g. when printing */
	return True;
    
    while (*special == ' ' || *special == '\t')
	++special;

    if (memicmp(special, "psfile=", strlen("psfile=")) == 0) {
	char *b_ptr = special + strlen("psfile=");
	char *e_ptr;
	
	while (*b_ptr == '"')
	    b_ptr++;
	
	if ((e_ptr = strchr(b_ptr, '"')) != NULL) {
	    size_t len = e_ptr - b_ptr;
	    char *tmp = xmalloc(len + 1);
	    memcpy(tmp, b_ptr, len);
	    tmp[len] = '\0';
	    if (!stack_contains_item(&(info->warn_files), tmp)) {
		push_stack(&(info->warn_files), tmp);
	    }
	    free(tmp);
	}
    }
    
    return True; /* dummy */
}

/*
  Invoked by spcl_scan; saves hyperref and color commands
  into the global stacks `color_stack' and `hyperref_stack'.
  FIXME: In reality char *special is treated as const, but the declaration
  of spcl_scan doesn't allow for this.
*/
static Boolean
stack_save(char *special, int str_len, void *data)
{
    char *ptr;
    size_t len;

    UNUSED(data);
    UNUSED(str_len);
    
    while (isspace((int)*special))
	++special;
    
    ptr = special;
    
    if (memicmp(special, "color ", len = strlen("color ")) == 0) {
	special += len;
	while (*special == ' ' || *special == '\t')
	    ++special;
	if (memicmp(special, "push ", 5) == 0) {
	    push_stack(&color_stack, ptr);
	}
	else if (memicmp(special, "pop", 3) == 0) {
	    pop_stack(&color_stack);
	}
    }
    else if (memicmp(special, "html:", len = strlen("html:")) == 0) {
	/* 	fprintf(stderr, "++++ special: %s; fd: %ld\n", special + 5, ftell(globals.dvi_file.bak_fp)); */
	special += len;
	if (memicmp(special, "<a href=", 8) == 0
	    || memicmp(special, "<a name=", 8) == 0) {
	    push_stack(&href_stack, ptr);
	}
	else if (memicmp(special, "</a>", 4) == 0) {
	    pop_stack(&href_stack);
	}
    }
    else if (memicmp(special, "papersize", len = strlen("papersize")) == 0) {
	free(dvips_papersize_special);
	dvips_papersize_special = xstrdup(special);
    }
    else  if (*special == '!'
	      || memcmp(special, "header", strlen("header")) == 0) {
	size_t idx = literal_headers.size++;
	if (globals.debug & DBG_GUI)
	    fprintf(stderr, "(literal) header %lu: |%s|\n", (unsigned long)idx, special);
	literal_headers.headers = xrealloc(literal_headers.headers,
					   literal_headers.size * sizeof *(literal_headers.headers));
	literal_headers.headers[idx] = xstrdup(special);
    }
    return True; /* dummy */
}

/* write a special to the FILE *fp, updating offset as appropriate. */
static void
write_special(const char *str, FILE *fp, long *offset)
{
    unsigned int len = strlen(str);
    if (len < 256) {
	unsigned char c = len;
	putc(XXX1, fp);
	putc(c, fp);
	*offset += 2;
    }
    else { /* how about xxx2, xxx3? It seems that TeX doesn't use them either? */
	putc(XXX4, fp);
	PutFour(len, fp);
	*offset += 5;
    }
    fputs(str, fp);
    *offset += len;
}

/*
 * Dump the headers in the global list `literal_headers',
 * and free up resources
 */
static void
dump_literal_headers(FILE *fp, long *pos)
{
    size_t i;
    for (i = 0; i < literal_headers.size; i++) {
	write_special(literal_headers.headers[i], fp, pos);
	free(literal_headers.headers[i]);
    }
    free(literal_headers.headers);
    literal_headers.headers = NULL;
    literal_headers.size = 0;
}


static void
scan_page_for_specials(FILE *fp, int page, Boolean save_stack,
		       Boolean (*special_proc)(char *str, int str_len, void *data),
		       struct select_pages_info *info)
{
    off_t pos_save;
    static ubyte my_scan_buffer[DVI_BUFFER_LEN];

    struct drawinf currinf_save;
    ubyte maxchar_save;
    size_t i;
    TRACE_GUI((stderr, "parsing page: %d", page));
    if (save_stack) {
	/*
	  first, copy the current stacks (which reflect the state on the
	  preceding page) to color_save_stack and href_save_stack:
	*/
	empty_stack(&color_save_stack);
	empty_stack(&href_save_stack);
	for (i = 0; i < color_stack.stack_len; i++) {
	    TRACE_GUI((stderr, "saving stack: |%s|", color_stack.items[i].content));
	    push_stack(&color_save_stack, color_stack.items[i].content);
	}
	for (i = 0; i < href_stack.stack_len; i++) {
	    TRACE_GUI((stderr, "saving stack: |%s|", href_stack.items[i].content));
	    push_stack(&href_save_stack, href_stack.items[i].content);
	}
    }
    
    /*     (void)fseek(fp, pageinfo_get_offset(page), SEEK_SET); */
    /*
      The datastructures in dvi-draw are rather weird in requiring
      us to provide a buffer, and point the global currinf.pos and end
      pointers to that buffer, for spcl_scan to be able to scan the file.
      First save the contents of the exising currinf, pointing to the main file:
    */
    pos_save = save_file_status(fp, &currinf_save, &maxchar_save);

    lseek(fileno(fp), pageinfo_get_offset(page), SEEK_SET);
    memset((char *)&currinf.data, 0, sizeof currinf.data);
    currinf.tn_table_len = TNTABLELEN;
    currinf.tn_table = tn_table;
    currinf.tn_head = tn_head;

    /* then point currinf to our own buffer: */
    G_dvi_buf_ptr = my_scan_buffer;
    currinf.pos = currinf.end = G_dvi_buf_ptr;
    lseek(fileno(fp), pageinfo_get_offset(page), SEEK_SET);
    /*
      finally we may invoke spcl_scan(). I hope we can do without
      the
      (!setjmp(some_env))
      black magic since there shouldn't be any interruptions ...
    */
#if 1    
    spcl_scan(special_proc, info, False, fp);
#else
    /* this is an attempt at using setjmp(), but it's just too ugly ... */
    for (;;) {
	int page_bak;
	if (read_events(EV_NOWAIT) & EV_GE_NEWPAGE)
	    break;
	page_bak = page;
	if (!setjmp(globals.ev.canit)) {
	    fprintf(stderr, "current position: %lu; seeking to: %lu\n",
		    (unsigned long)pos_save,
		    (unsigned long)pageinfo_get_offset(page));
	    (void) fprintf(stderr, "seeking to offset %ld, page %d of file %d\n",
			   pageinfo_get_offset(page),
			   page, fileno(globals.dvi_file.bak_fp));
	    fseek(fp, pageinfo_get_offset(page), SEEK_SET);
	    spcl_scan(special_proc, info, False);
	}
	else { /* if interrupted */
	    fprintf(stderr, "========= interrupted!\n");
	    if (page >= page_bak)
		page = page_bak;
	    break;
	}
	if (page >= current_page)
	    break;
	page++;
    }
#endif
    /* now we restore those pesky globals, hoping that nobody
       has stamped upon them in the meantime. */
    restore_file_status(fp, currinf_save, maxchar_save, pos_save);

    /* reposition file pointer */
    (void)fseek(fp, pageinfo_get_offset(page), SEEK_SET);
}


/* dump the `open' commands on the current stack to the FILE *fp */
static void
stack_dump_open_commands(FILE *fp, long *pos)
{
    size_t i;
    TRACE_GUI((stderr, "length of stacks: %lu, %lu",
	       (unsigned long)color_save_stack.stack_len,
	       (unsigned long)href_save_stack.stack_len));
    for (i = 0; i < color_save_stack.stack_len; i++) {
	TRACE_GUI((stderr, "dumping: |%s|", color_save_stack.items[i].content));
	write_special(color_save_stack.items[i].content, fp, pos);
    }
    for (i = 0; i < href_save_stack.stack_len; i++) {
	TRACE_GUI((stderr, "dumping: |%s|", href_save_stack.items[i].content));
	write_special(href_save_stack.items[i].content, fp, pos);
    }
    if (dvips_papersize_special != NULL)
	write_special(dvips_papersize_special, fp, pos);
    TRACE_GUI((stderr, "end of dumping open\n"));
}

/* dump `close' commands for all the `open' commands on the
   current stack (not the saved one, but the one active at the end of the page)
   to the FILE *fp (closing tags for hyperref anchors,
   `pop' commands for color specials).
*/
static void
stack_dump_close_commands(FILE *fp, long *pos)
{
    size_t i;

    for (i = color_stack.stack_len; i > 0; i--) {
	TRACE_GUI((stderr, "===== color pop"));
	write_special("color pop", fp, pos);
    }
    for (i = href_stack.stack_len; i > 0; i--) {
	TRACE_GUI((stderr, "===== html:</a>"));
	write_special("html:</a>", fp, pos);
    }
}


static void
WriteDVI(FILE *fin, FILE *fout, long *fout_pos, int c)
{
    int i, n;
    struct fontinfo *fontp;

    if (c >= FNTNUM0 && c <= FNT4) {
	if (c >= FNT1)
	    n = get_bytes(fin, c - FNT1 + 1);
	else
	    n = c - FNTNUM0;
	for (fontp = fontinfo_head; fontp; fontp = fontp->next)
	    if (n == fontp->TeXnumber)
		break;
	if (fontp && fontp->used == False) {
	    fontp->used = True;
	    FontWrite(fout, fontp, fout_pos);
	}
	putc(c, fout);
	(*fout_pos)++;
	switch (c) {
	case FNT4:
	    putc((n >> 24) & 0xff, fout);
	    (*fout_pos)++;
	case FNT3:
	    putc((n >> 16) & 0xff, fout);
	    (*fout_pos)++;
	case FNT2:
	    putc((n >> 8) & 0xff, fout);
	    (*fout_pos)++;
	case FNT1:
	    putc(n & 0xff, fout);
	    (*fout_pos)++;
	default:
	    break;
	}
    }
    else if (c >= FNTDEF1 && c <= FNTDEF4) {
	n = get_bytes(fin, c - FNTDEF1 + 1);
	for (fontp = fontinfo_head; fontp; fontp = fontp->next)
	    if (n == fontp->TeXnumber)
		break;
	if (fontp && fontp->used == False) {
	    fontp->used = True;
	    FontWrite(fout, fontp, fout_pos);
	}
	(void) get_bytes(fin, 12);
	(void) get_bytes(fin, (int)(get_byte(fin) + get_byte(fin)));
    }
    else {
	putc(c, fout);
	(*fout_pos)++;
	n = 0;
	if (c <= XXX4) {
	    for (i = 0; i < c - XXX1 + 1; i++) {
		int x = get_byte(fin);
		putc(x, fout);
		(*fout_pos)++;
		n = (n << 8) | x;
	    }
	}
	switch (c) {
	case SETRULE:
	case PUTRULE:
	    n += 4;
	    /* fall through */
	    
	case SET4:
	case PUT4:
	    if (!resource.omega) {
		dvi_fmt_error("%s:%d: WriteDVI: op-code %d only works with the \"-omega\" option",
			      __FILE__, __LINE__, c);
	    }
	case RIGHT4:
	case W4:
	case X4:
	case DOWN4:
	case Y4:
	case Z4:
	    n++;
	    /* fall through */

	case SET3:
	case PUT3:
	    if (!resource.omega) {
		dvi_fmt_error("%s:%d: WriteDVI: op-code %d only works with the \"-omega\" option",
			      __FILE__, __LINE__, c);
	    }
	case RIGHT3:
	case W3:
	case X3:
	case DOWN3:
	case Y3:
	case Z3:
	    n++;
	    /* fall through */

	case SET2:
	case PUT2: 
	    if (!resource.omega) {
		dvi_fmt_error("%s:%d: WriteDVI: op-code %d only works with the \"-omega\" option",
			      __FILE__, __LINE__, c);
	    }
	case RIGHT2:
	case W2:
	case X2:
	case DOWN2:
	case Y2:
	case Z2:
	    n++;
	    /* fall through */

	case SET1:
	case PUT1:
	case RIGHT1:
	case W1:
	case X1:
	case DOWN1:
	case Y1:
	case Z1:
#ifdef PTEX
	case TDIR:
#endif
	    n++;
	    /* fall through */

	case XXX1:
	case XXX2:
	case XXX3:
	case XXX4:
	    CopyNum(fin, fout, n);
	    (*fout_pos) += n;
	    /* fall through */

	default:
	    break;
	}
    }
}

/* public functions */


/* callback functions for selecting pages */
Boolean
check_pagerange(struct save_or_print_info *info, int page)
{
    return (page >= info->pinfo->from && page <= info->pinfo->to);
}

Boolean
check_marked(struct save_or_print_info *info, int page)
{
    UNUSED(info);
    return pageinfo_is_marked(page);
}

void
select_pages(struct save_or_print_info *info)
{
    struct select_pages_info *pinfo = info->pinfo;
    int c, n, page, pagecnt;
    long fout_pos = 0L;
    unsigned long curr_page_offset = 0xffffffff; /* pattern to be overwritten later */
    unsigned long post_cmd_offset = 0xffffffff; /* pattern to be overwritten later */
    struct fontinfo *fontp;
    FILE *in_fp = info->finfo->in_fp;
    FILE *out_fp = info->finfo->tmp_dvi_fp;
    
    Boolean headers_dumped = False;
    free(dvips_papersize_special); /* re-initialize */
    dvips_papersize_special = NULL;

    ASSERT(in_fp != NULL, "input file mustn't be NULL in select_pages()!");
    ASSERT(out_fp != NULL, "output file mustn't be NULL in select_pages()!");
    
    pinfo->errflag = NO_ERROR; /* reset errflag, in case we're recovering from a previous error */
    
    /* get font list from postamble; in_fp already has been positioned
       at correct position (start of postamble) in caller. */
    (void)fseek(in_fp, ftell(in_fp), SEEK_SET); /* paranoia */
    (void)get_bytes(in_fp, POSTAMBLE_LEN);
    fontinfo_head = NULL;
    for (;;) {
	if ((c = get_byte(in_fp)) < FNTDEF1 || c > FNTDEF4) /* maybe POSTPOST */
	    break;
	fontp = (struct fontinfo *) xmalloc(sizeof(struct fontinfo));
	fontp->TeXnumber = get_bytes(in_fp, c - FNTDEF1 + 1);
	(void)fread(fontp->info, sizeof(char), 14, in_fp);
	n = fontp->info[12] + fontp->info[13];
	fontp->fontname = xmalloc(n);
	(void)fread(fontp->fontname, sizeof(char), n, in_fp);
	fontp->next = fontinfo_head;
	fontinfo_head = fontp;
	fontp->used = False;
    }

    /* preamble */
    fseek(in_fp, 0L, SEEK_SET);
    fout_pos = pageinfo_get_offset(0);
    CopyNum(in_fp, out_fp, fout_pos);

    /* each page */
    pagecnt = 0;
    for (page = 0; page < total_pages; page++) {
	scan_page_for_specials(in_fp, page, True, stack_save, NULL);

	/* should the current page be selected? */
	if (pinfo->callback == NULL || pinfo->callback(info, page)) {
	    scan_page_for_specials(in_fp, page, False, scan_for_included_files, pinfo);

	    /* read BOP except for p[4] */
	    CopyNum(in_fp, out_fp, BOP_PART_LEN);
	    /* read p[4] (previous bop pointer */
	    (void)get_bytes(in_fp, 4);
	    /* write actual value of p[4] */
	    PutFour(curr_page_offset, out_fp);
	    /* remember offset of current page, for postamble */
	    curr_page_offset = fout_pos;
	    /* update fout_pos to current position */
	    fout_pos += BOP_LEN;
	    
	    if (!headers_dumped) {
		headers_dumped = True;
		dump_literal_headers(out_fp, &fout_pos);
	    }

	    /*  	    if (!written_pre_cmds) { */
	    stack_dump_open_commands(out_fp, &fout_pos);
	    /*  		written_pre_cmds = True; */
	    /*  	    } */

	    while ((c = getc(in_fp)) != EOF) {
		if ((c & 0x80) == 0) { /* ordinary character */
		    putc(c, out_fp);
		    fout_pos++;
		}
		else if (c == EOP) { /* End Of Page */
		    /* 		    fprintf(stderr, "EOP at %ld\n", ftell(fin)); */

		    /*  		    if (page == to) {  */ /* print close stack for last page */
		    stack_dump_close_commands(out_fp, &fout_pos);
		    /*  		    } */

		    putc(c, out_fp);
		    fout_pos++;
		    break;
		}
		else {
		    /* 		    fprintf(stderr, "WRITE_DVI before: %ld, in_fp before: %ld\n", fout_pos, ftell(in_fp)); */
		    WriteDVI(in_fp, out_fp, &fout_pos, c);
		    /* 		    fprintf(stderr, "WRITE_DVI after: %ld; in_fp after: %ld\n", fout_pos, ftell(in_fp)); */
		}
		/* HACK alert: force synchronization - why is this neccessary?
		   Seems to have something do with the fact that two FILE *'s on the same
		   file are open. POSIX.1,
		   `Interaction of File Descriptors and Standard I/O Streams' seems to
		   say the seek()s on one of them also affect the other, but I'm not sure
		   about this.
		*/
		fseek(in_fp, 0L, SEEK_CUR);
	    }
	    pagecnt++;
	}
    }

    /* postamble */
    if (!find_postamble(in_fp, &(pinfo->errflag))) {
	return;
    }

    /* read/write POST command */
    putc(get_byte(in_fp), out_fp);
    /* read over last page offset */
    get_bytes(in_fp, 4);
    /* write last page offset */
    PutFour(curr_page_offset, out_fp);
    /* remember start of POST */
    post_cmd_offset = fout_pos;
    /* copy part of postamble */
    CopyNum(in_fp, out_fp, POSTAMBLE_PART_LEN);
    /* read t[2], total number of pages */
    get_bytes(in_fp, 2);
    /* write t[2] (two calls) */
    putc((pagecnt >> 8) & 0xff, out_fp);
    putc(pagecnt & 0xff, out_fp);
    /* update fout_pos to current pos */
    fout_pos += POSTAMBLE_LEN;

    /* output font list */
    for (;;) {
	if ((c = get_byte(in_fp)) < FNTDEF1 || c > FNTDEF4) /* maybe POSTPOST */
	    break;
	n = get_bytes(in_fp, c - FNTDEF1 + 1);
	for (fontp = fontinfo_head; fontp; fontp = fontp->next)
	    if (n == fontp->TeXnumber)
		break;
	if (fontp && fontp->used == True)
	    FontWrite(out_fp, fontp, &fout_pos);
	(void) get_bytes(in_fp, 12);
	(void) get_bytes(in_fp, (int)(get_byte(in_fp) + get_byte(in_fp)));
    }

    /* free list */
    for (fontp = fontinfo_head; fontp;) {
	struct fontinfo *nextp;
	free(fontp->fontname);
	nextp = fontp->next;
	free(fontp);
	fontp = nextp;
    }

    /* POSTPOST */
    putc(c, out_fp);
    get_bytes(in_fp, 4);
    PutFour(post_cmd_offset, out_fp);
    CopyNum(in_fp, out_fp, 1 + 4);
    for (fout_pos += 1 + 4 + 1 + 4;
	 fout_pos & 3;
	 fout_pos++) {
	putc(TRAILER, out_fp);
    }

    /*      fclose(in_fp); */
    fflush(out_fp);
}