summaryrefslogtreecommitdiff
path: root/dviware/kyocera/dvi.c
blob: e2b292a41b05e0bbf89b406e38908ef8a953263b (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
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
/* dvi.c The dvi reader for dvi printers.
 * Copyright 1985 Massachusetts Institute of Technology.
 * Author: cjl@oz
 * Slightly changed by Kees Straatman (mcvax!guvaxin!kees) for Kyocera driver
 */

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include "fonts.h"
#include "dev.h"
#include "util.h"
#include "dvi.h"

extern char *rindex();
extern char *mktemp();
extern long ftell();

#define DVI_STACK_SIZE      512 /* Maximum dvi stack size supported. */
#define NFONTDIR_MAX         16
#define MAXDRIFT              2
#ifndef PXLDIR
#define PXLDIR "/usr/lib/tex/pxlfonts"
#endif

/* Runtime parameters specified by user
 */
FILE *out = stdout;
FILE *in;
char *dirvec[NFONTDIR_MAX];
char *acctfile = (char *)0;
int  npages = 0;
int dirveclen;
unsigned long devopts,fontopts;

/* Runtime parameters specified by the dvi file & the user
 */
char pre_comment[257];
long numerator,denominator,half_denominator,dvinum,dviden,dvimag;
long globalmag;


/* Runtime data structures
 */
char stdoutbuf[BUFSIZ];
long h_pix,v_pix,h,v,w,x,y,z,device_dpi,fntspc;
unsigned long fntvec[512],chrvec[512][4];
int stackptr,fntveclen;
long hstack[DVI_STACK_SIZE];
long h_pixstack[DVI_STACK_SIZE];
long vstack[DVI_STACK_SIZE];
long v_pixstack[DVI_STACK_SIZE];
long wstack[DVI_STACK_SIZE];
long xstack[DVI_STACK_SIZE];
long ystack[DVI_STACK_SIZE];
long zstack[DVI_STACK_SIZE];

/* Stack manipulation: push and pop
 */

push()
{
  if (stackptr >= DVI_STACK_SIZE) croak("dvi stack overflow");
  hstack[stackptr] = h;
  h_pixstack[stackptr] = h_pix;
  vstack[stackptr] = v;
  v_pixstack[stackptr] = v_pix;
  wstack[stackptr] = w;
  xstack[stackptr] = x;
  ystack[stackptr] = y;
  zstack[stackptr] = z;
  stackptr++;
}

pop()
{
  if (stackptr <= 0) croak("dvi stack underflow");
  stackptr--;
  h = hstack[stackptr];
  h_pix = h_pixstack[stackptr];
  v = vstack[stackptr];
  v_pix = v_pixstack[stackptr];
  w = wstack[stackptr];
  x = xstack[stackptr];
  y = ystack[stackptr];
  z = zstack[stackptr];
}

position()
{
  register int dh = h_pix - (h * numerator + half_denominator) / denominator;
  register int dv = v_pix - (v * numerator + half_denominator) / denominator;

  if (dh > MAXDRIFT) h_pix -= MAXDRIFT;
  else if (dh < -MAXDRIFT) h_pix += MAXDRIFT;
  if (dv > MAXDRIFT) v_pix -= MAXDRIFT;
  else if (dv < -MAXDRIFT) v_pix += MAXDRIFT;
  dev_position(h_pix,v_pix);
}

/* Drawing: set and setrule
 */
set(ch,movep)
     unsigned long ch;
     int movep;
{
  long texwidth,devwidth;

  f_use_char(ch,&texwidth,&devwidth);
  position();
  f_setc(ch,devwidth);
  if (movep) {
    h += texwidth;
    h_pix += devwidth;
  }
}

setrule(movep)
     int movep;
{
  long a = sget4(in);
  long b = sget4(in);
  long a_pix,b_pix;

  if (a > fntspc || a < -fntspc)
    a_pix = ((v + a) * numerator + half_denominator) / denominator - v_pix;
  else if (a < 0)
    a_pix = - ((-a * numerator + half_denominator) / denominator);
  else
    a_pix = (a * numerator + half_denominator) / denominator;
  if (b > fntspc || b < -fntspc)
    b_pix = ((h + b) * numerator + half_denominator) / denominator - h_pix;
  else if (b < 0)
    b_pix = - ((-b * numerator + half_denominator) / denominator);
  else
    b_pix = (b * numerator + half_denominator) / denominator;
  if (a_pix > 0 && b_pix > 0) {
    position();
    dev_draw_box(a_pix,b_pix);
  }
  if (movep) {
    h += b;
    h_pix += b_pix;
  }
}

/* Movement: right and down
 */

right(dx)
     long dx;
{
  h += dx;
  if (dx > fntspc || dx < -fntspc * 4)
    h_pix = (h * numerator + half_denominator) / denominator;
  else if (dx < 0)
    h_pix -= (-dx * numerator + half_denominator) / denominator;
  else
    h_pix += (dx * numerator + half_denominator) / denominator;
}

down(dy)
     long dy;
{
  v += dy;
  if (dy > fntspc * 5)
    v_pix = (v * numerator + half_denominator) / denominator;
  else if (dy < 0)
    v_pix -= (-dy * numerator + half_denominator) / denominator;
  else
    v_pix += (dy * numerator + half_denominator) / denominator;
}


/* Special: xxx
 */
xxx(k)
     long k;
{
  position();
  dev_special(k,in);
}


/* Fonts: fntdef
 */
fntdef(fontnum)
     unsigned long fontnum;
{
  unsigned long tfmchecksum = get4(in);
  long s = sget4(in);
  long d = sget4(in);
  int a = get1(in);
  int l = get1(in);
  int i;
  char area[257];
  char name[257];
  long mag;

  for (i = 0; i < a; i++) area[i] = getc(in); area[a] = 0;
  for (i = 0; i < l; i++) name[i] = getc(in); name[l] = 0;
  mag = (long) (((double) s) * ((double) globalmag) / ((double) d));
  debug("fntdef: num= %d area=\"%s\" name=\"%s\" mag=%d s=%d d=%d\n",
	fontnum,area,name,mag,s,d);
  f_define_font(fontnum,0,area,name,mag,s,tfmchecksum);
}

/* Fonts: fntdef
 */
nullfntdef(fontnum)
     unsigned long fontnum;
{
  register int a,l,i;

  (void) getc(in); (void) getc(in); (void) getc(in); (void) getc(in);
  (void) getc(in); (void) getc(in); (void) getc(in); (void) getc(in);
  (void) getc(in); (void) getc(in); (void) getc(in); (void) getc(in);
  a = getc(in);
  l = getc(in);
  for (i = 0; i < a; i++) (void) getc(in);
  for (i = 0; i < l; i++) (void) getc(in);
}

/* Record this font number on fntvec
 * We'll later pass fntvec to the fonts module
 */
int fntmark(fnt)
     unsigned long fnt;
{
  register int i;

  for (i = 0; i < fntveclen; i++) if (fntvec[i] == fnt) return(i);
  if (fntveclen >= sizeof(fntvec)) croak("too many fonts");
  chrvec[fntveclen][0] = 0;
  chrvec[fntveclen][1] = 0;
  chrvec[fntveclen][2] = 0;
  chrvec[fntveclen][3] = 0;
  fntvec[fntveclen] = fnt;
  return(fntveclen++);
}

chrmark(ch,i)
     unsigned long ch;
     int i;
{
  chrvec[i][ch/32] |= (1 << (ch % 32));
}

/* End of page processing: eop
 */
eop()
{
  dev_eop();
}

noprint_page(c,p)
     long c[10];
     long p;
{
  int f;
  register int ch;

  (void) c; (void) p;
  fntveclen = 0;
  for (;;) {
    if (ferror(in)) croak("noprint_page dvi input");
    switch (ch = getc(in)) {
    case SETRULE:
    case PUTRULE:
      (void) getc(in);
      (void) getc(in);
      (void) getc(in);
      (void) getc(in);

    case RIGHT4:
    case W4:
    case DOWN4:
    case X4:
    case Y4:
    case Z4:
      (void) getc(in);

    case RIGHT3:
    case W3:
    case X3:
    case DOWN3:
    case Y3:
    case Z3:
      (void) getc(in);

    case RIGHT2:
    case W2:
    case X2:
    case DOWN2:
    case Y2:
    case Z2:
      (void) getc(in);

    case RIGHT1:
    case W1:
    case X1:
    case DOWN1:
    case Y1:
    case Z1:
      (void) getc(in);

    case NOP:
    case PUSH:
    case POP:
    case W0:
    case X0:
    case Y0:
    case Z0:
      break;

    case EOP:
      return;


    case SET1:
    case PUT1:          chrmark(get1(in),f);    break;
    case SET2:
    case PUT2:          chrmark(get2(in),f);    break;
    case SET3:
    case PUT3:          chrmark(get3(in),f);    break;
    case SET4:
    case PUT4:          chrmark(get4(in),f);    break;
    case FNT1:          f = fntmark(get1(in));  break;
    case FNT2:          f = fntmark(get2(in));  break;
    case FNT3:          f = fntmark(get3(in));  break;
    case FNT4:          f = fntmark(get4(in));  break;
    case FNTDEF1:       nullfntdef(get1(in));   break;
    case FNTDEF2:       nullfntdef(get2(in));   break;
    case FNTDEF3:       nullfntdef(get3(in));   break;
    case FNTDEF4:       nullfntdef(get4(in));   break;
    case XXX1:          swallow(get1(in),in);   break;
    case XXX2:          swallow(get2(in),in);   break;
    case XXX3:          swallow(get3(in),in);   break;
    case XXX4:          swallow(get4(in),in);   break;

    case EOF:
      croak("noprint_page EOF between BOP and EOP");
      break;

    default:
      if (ch >= SETCHAR0 && ch <= SETCHAR127)
	chrmark((unsigned long) (ch - SETCHAR0),f);
      else if (ch >= FNTNUM0 && ch <= FNTNUM63)
	f = fntmark((unsigned long) (ch - FNTNUM0));
      else croak("noprint_page dvi command %d between BOP and EOP",ch);
      break;
    }
  }
}

print_page(c,p)
     long c[10];
     long p;
{
  long ch;

  (void) p;
  stackptr = 0;
  h = v = w = x = y = z = h_pix = v_pix = 0;
  position();
  for (;;) {
    if (ferror(in)) croak("print_page dvi input");
    switch (ch = getc(in)) {
    case EOF:
      croak("print_page EOF between BOP and EOP");
      break;

    case SET1:          set(get1(in),1);        break;
    case SET2:          set(get2(in),1);        break;
    case SET3:          set(get3(in),1);        break;
    case SET4:          set(get4(in),1);        break;
    case SETRULE:       setrule(1);             break;
    case PUT1:          set(get1(in),0);        break;
    case PUT2:          set(get2(in),0);        break;
    case PUT3:          set(get3(in),0);        break;
    case PUT4:          set(get4(in),0);        break;
    case PUTRULE:       setrule(0);             break;
    case NOP:                                   break;
    case EOP:           eop();                  return;
    case PUSH:          push();                 break;
    case POP:           pop();                  break;
    case RIGHT1:        right(sget1(in));       break;
    case RIGHT2:        right(sget2(in));       break;
    case RIGHT3:        right(sget3(in));       break;
    case RIGHT4:        right(sget4(in));       break;
    case W0:            right(w);               break;
    case W1:            right(w = sget1(in));   break;
    case W2:            right(w = sget2(in));   break;
    case W3:            right(w = sget3(in));   break;
    case W4:            right(w = sget4(in));   break;
    case X0:            right(x);               break;
    case X1:            right(x = sget1(in));   break;
    case X2:            right(x = sget2(in));   break;
    case X3:            right(x = sget3(in));   break;
    case X4:            right(x = sget4(in));   break;
    case DOWN1:         down(sget1(in));        break;
    case DOWN2:         down(sget2(in));        break;
    case DOWN3:         down(sget3(in));        break;
    case DOWN4:         down(sget4(in));        break;
    case Y0:            down(y);                break;
    case Y1:            down(y = sget1(in));    break;
    case Y2:            down(y = sget2(in));    break;
    case Y3:            down(y = sget3(in));    break;
    case Y4:            down(y = sget4(in));    break;
    case Z0:            down(z);                break;
    case Z1:            down(z = sget1(in));    break;
    case Z2:            down(z = sget2(in));    break;
    case Z3:            down(z = sget3(in));    break;
    case Z4:            down(z = sget4(in));    break;
    case FNT1:          f_use_font(get1(in),&fntspc);   break;
    case FNT2:          f_use_font(get2(in),&fntspc);   break;
    case FNT3:          f_use_font(get3(in),&fntspc);   break;
    case FNT4:          f_use_font(get4(in),&fntspc);   break;
    case FNTDEF1:       nullfntdef(get1(in));   break;
    case FNTDEF2:       nullfntdef(get2(in));   break;
    case FNTDEF3:       nullfntdef(get3(in));   break;
    case FNTDEF4:       nullfntdef(get4(in));   break;
    case XXX1:          xxx(get1(in));          break;
    case XXX2:          xxx(get2(in));          break;
    case XXX3:          xxx(get3(in));          break;
    case XXX4:          xxx(get4(in));          break;

    default:
      if (ch >= SETCHAR0 && ch <= SETCHAR127)
	set((unsigned long) (ch - SETCHAR0),1);
      else if (ch >= FNTNUM0 && ch <= FNTNUM63)
	f_use_font((unsigned long) (ch - FNTNUM0),&fntspc);
      else croak("print_page dvi command %d between BOP and EOP",ch);
      break;
    }
  }
}

/* Preamble processing.
 */
computescale()
{
  double dd;

  /* Compute scale factors for this file. */
  globalmag = dvimag;

  /* This is real hokey, but will probably work for TEX82. */
  if (dvinum != 25400000 || dviden != 473628672) {
    fprintf(stderr,"DVI file numerator and denominator weren't exactly ");
    fprintf(stderr,"what was expected.\nScaling may be wrong.\n");
  }
  numerator = ((long) (((double) dvinum)
		       / ((double) 254000)
		       / ((double) 10)));
  denominator = ((long) (((double) dviden)
			 / ((double) globalmag)
			 * ((double) 1000)
			 / ((double) device_dpi)
			 / ((double) 10)));
  half_denominator = denominator / 2;
  debug("Computescale: globalmag=%d numerator=%d denominator=%d\n",
	globalmag,numerator,denominator);

}


preamble()
{
  int i = getc(in);
  int k;

  dvinum = get4(in);
  dviden = get4(in);
  dvimag = get4(in);
  k = get1(in);
  if (i != 2) croak("id_byte=%d, probably not a dvi file",i);
  for (i = 0; i < k; i++) pre_comment[i] = getc(in);
  pre_comment[k] = '\0';
  computescale();
  debug("Preamble: dvinum=%d dviden=%d dvimag=%d\n",
	dvinum,dviden,dvimag);
  debug("          comment: \"%s\"\n",pre_comment);
}

/* Beginning of page processing
 */
bop()
{
  int i;
  long c[10];
  long p,fpos;

  for (i = 0; i < 10; i++) c[i] = sget4(in);
  p = sget4(in);
  debug("first pass of page %d\n",c[0]);
  fpos = ftell(in);           /* Remember where we are */
  noprint_page(c,p);          /* First pass noprint to get fntvec */
  /* Tell font module about the fonts */
  f_newpage(fntvec,chrvec,fntveclen);
  debug("second pass of page %d\n",c[0]);
  fseek(in,fpos,0);           /* Back up */
  print_page(c,p);            /* And finally do the page */
  debug("done with page %d\n",c[0]);
  npages++;
}

file_term()
{
  f_term();
  close_ef();
  dev_term();
}

/* Postamble processing.
 */

find_postamble()
{
  int ch;
  long i = -4;
  long q;

  do (void) fseek(in,i--,2); while ((ch = getc(in)) == TRAILER);
  if (ch != 2) croak("postamble id_byte=%d, probably not a dvi file",ch);
  (void) fseek(in,i-4,2);
  if ((ch = getc(in)) != POSTPOST) croak("no POSTPOST where expected");
  q = sget4(in);
  (void) fseek(in,q,0);
  if ((ch = getc(in)) != POST) croak("no POST where expected");
}


postamble()
{
  int ch;
  long p = sget4(in);
  unsigned long l,u,maxstackdepth,npages;

  dvinum = get4(in);
  dviden = get4(in);
  dvimag = get4(in);
  computescale();
  l = get4(in);
  u = get4(in);
  maxstackdepth = get2(in);
  npages = get2(in);
  debug("Postamble: dvinum=%d dviden=%d dvimag=%d maxstackdepth=%d\n",
	dvinum,dviden,dvimag,maxstackdepth);
  debug("           npages=%d\n",npages);
  if (maxstackdepth > DVI_STACK_SIZE)
    croak("dvi file has too much stack depth");
  f_init(out,pgmnam,dirvec,dirveclen,numerator
	 ,denominator,globalmag,fontopts);
  signal(SIGINT, file_term);
  for (;;) {
    if (ferror(in)) croak("postamble input");
    switch (ch = getc(in)) {
    case EOF:
      croak("EOF found before POSTPOST");
      break;

    case FNTDEF1:       fntdef(get1(in));       break;
    case FNTDEF2:       fntdef(get2(in));       break;
    case FNTDEF3:       fntdef(get3(in));       break;
    case FNTDEF4:       fntdef(get4(in));       break;
    case NOP:                                   break;
    case POSTPOST:                              return;

    default:
      croak("dvi command %d in postamble",ch);
      break;
    }
  }
}

/* Process a dvi file
 */
file_init()
{
  int ch;

  if ((ch = getc(in)) != PRE)
    croak("first char %d not PRE, probably not a dvi file",ch);
  find_postamble();
  dev_init(out,devopts,&device_dpi);
  open_ef();
  postamble();
  (void) fseek(in,1L,0);
  preamble();
}

dvi_file()
{
  int ch;

  if (!dirveclen) dirvec[dirveclen++] = PXLDIR;
  file_init();
  for (;;) {
    if (ferror(in)) croak("dvi_file input");
    switch (ch = getc(in)) {
    case EOF:
      croak("EOF found between pages");
      break;

    case BOP:           bop();                  break;
    case POST:          file_term();            return;
    case FNTDEF1:       fntdef(get1(in));       break;
    case FNTDEF2:       fntdef(get2(in));       break;
    case FNTDEF3:       fntdef(get3(in));       break;
    case FNTDEF4:       fntdef(get4(in));       break;
    case NOP:                                   break;

    default:
      croak("dvi command %d between pages",ch);
      break;
    }
  }
}

process_stdin()
{
  int ch;
  FILE *tf;
  char tfn[257];
  struct stat st;

  if (fstat(fileno(stdin),&st) < 0) croak("can't stat stdin");
  if ((st.st_mode & S_IFMT) == S_IFREG) {
    in = stdin; infname = "stdin";
    dvi_file();
    in = NULL; infname = NULL;
  } else {
    /* Copy the dvi data to a temp file, since we have to do disk seeks. */
    (void) sprintf(tfn,"/usr/tmp/%s.XXXXXX",pgmnam);
    if (!(tf = fopen(mktemp(tfn),"w"))) croak("couldn't open %s",tfn);
    unlink(tfn);
    while (!ferror(stdin) && (ch = getchar()) != EOF) putc(ch,tf);
    if (ferror(stdin)) croak("error on stdin");
    (void) fseek(tf,0L,0);
    infname = tfn; in = tf;
    dvi_file();
    in = NULL; infname = NULL;
    (void) fclose(tf);
  }
}

account()
{
  FILE *acctf;

  if (user && acctfile && access(acctfile, 02) >= 0 &&
      ((acctf = fopen(acctfile, "a")) != NULL)) {
    fprintf(acctf, "%-5d\t%s:%s\n", npages, host, user);
    fclose(acctf);
  }
}

main(argc,argv)
     int argc;
     char *argv[];
{
  FILE *f;
  int nfiles = 0;
  int i;

  setbuf(stdout,stdoutbuf);
  pgmnam = argv[0];
  fontopts = 0;
  devopts = 0;


  for (i = 1; i < argc; i++)
    if (argv[i][0] == '-') switch(argv[i][1]) {

    case 'd':
      debugging++;
      break;

    case 'h':
      host = argv[++i];
      break;

    case 'n':
      user = argv[++i];
      break;

    case 'x':
    case 'y':
      break;

    default:
      croak("bad switch: %s",argv[i]);
      break;
  } else
    acctfile  = argv[i];

  process_stdin();
  account();
  exit(0);
}