File: z51.c

package info (click to toggle)
lout 3.25-1
  • links: PTS
  • area: main
  • in suites: woody
  • size: 9,252 kB
  • ctags: 3,152
  • sloc: ansic: 31,182; makefile: 254; awk: 83
file content (665 lines) | stat: -rw-r--r-- 31,835 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
/*@z51.c:Plain Text Back End:Plain_BackEnd@***********************************/
/*                                                                           */
/*  THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.25)                       */
/*  COPYRIGHT (C) 1991, 2001 Jeffrey H. Kingston                             */
/*                                                                           */
/*  Jeffrey H. Kingston (jeff@cs.usyd.edu.au)                                */
/*  Basser Department of Computer Science                                    */
/*  The University of Sydney 2006                                            */
/*  AUSTRALIA                                                                */
/*                                                                           */
/*  This program 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, or (at your option)      */
/*  any later version.                                                       */
/*                                                                           */
/*  This program 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 this program; if not, write to the Free Software              */
/*  Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA   */
/*                                                                           */
/*  FILE:         z51.c                                                      */
/*  MODULE:       Plain Text Back End                                        */
/*  EXTERNS:      Plain_BackEnd, PlainCharWidth, PlainCharHeight,            */
/*                PlainFormFeed                                              */
/*                                                                           */
/*****************************************************************************/
#include "externs.h"


/*****************************************************************************/
/*                                                                           */
/*  PlainCharWidth    the width of each character                            */
/*  PlainCharHeight   the height of each character                           */
/*  PlainFormFeed     TRUE if components to be separated by \f.              */
/*                                                                           */
/*****************************************************************************/

FULL_LENGTH PlainCharWidth, PlainCharHeight;
BOOLEAN PlainFormFeed;

/*****************************************************************************/
/*                                                                           */
/*  State variables for this module                                          */
/*                                                                           */
/*****************************************************************************/

static FILE		*out_fp;	/* file to print output on           */
static int		hsize;		/* horizontal size of page in chars  */
static int		vsize;		/* vertical size of page in chars    */
static FULL_CHAR	*page;		/* the page (two-dim array of chars) */
static BOOLEAN		prologue_done;	/* TRUE after prologue is printed    */


/*****************************************************************************/
/*                                                                           */
/*  void Plain_PrintInitialize(fp)                                           */
/*                                                                           */
/*  Initialize this module; fp is the output file.                           */
/*                                                                           */
/*****************************************************************************/

void Plain_PrintInitialize(FILE *fp)
{
  debug0(DPT, DD, "Plain_PrintInitialize(fp)");
  out_fp = fp;
  prologue_done = FALSE;
  debug0(DPT, DD, "Plain_PrintInitialize returning.");
} /* end Plain_PrintInitialize */


/*****************************************************************************/
/*                                                                           */
/*  void Plain_PrintLength(FULL_CHAR *buff, int length, int length_dim)      */
/*                                                                           */
/*  Print a length (debugging only)                                          */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintLength(FULL_CHAR *buff, int length, int length_dim)
{
  if( length_dim == COLM )
  {
    sprintf( (char *) buff, "%.2fs", (float) length/PlainCharWidth);
  }
  else
  {
    sprintf( (char *) buff, "%.2ff", (float) length/PlainCharHeight);
  }
}


/*****************************************************************************/
/*                                                                           */
/*  void Plain_PrintPageSetupForFont(OBJECT face, int font_curr_page,        */
/*    FULL_CHAR *font_name, FULL_CHAR *first_size_str)                       */
/*                                                                           */
/*  Print the page setup commands required to use a font on some page:       */
/*                                                                           */
/*    face            The font face record, defining which font we need      */
/*    font_curr_page  The current page number                                */
/*    font_name       The name of the font                                   */
/*    first_size_str  No idea, have to check                                 */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintPageSetupForFont(OBJECT face, int font_curr_page,
  FULL_CHAR *font_name, FULL_CHAR *first_size_str)
{
  /* nothing to do here */

} /* end Plain_PrintPageSetupForFont */


/*****************************************************************************/
/*                                                                           */
/*  void Plain_PrintPageResourceForFont(FULL_CHAR *font_name, BOOLEAN first) */
/*    BOOLEAN first)                                                         */
/*                                                                           */
/*  Print page resource info on file fp for font font_name; first is true    */
/*  if this is the first resource on this page.                              */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintPageResourceForFont(FULL_CHAR *font_name, BOOLEAN first)
{
  /* nothing to do here */

} /* end Plain_PrintPageResourceForFont */


/*****************************************************************************/
/*                                                                           */
/*  static void Plain_PrintMapping(MAPPING m)                                */
/*                                                                           */
/*  Print mapping m.                                                         */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintMapping(MAPPING m)
{
  /* nothing to do here */

} /* end Plain_PrintMapping */


/*****************************************************************************/
/*                                                                           */
/*  void Plain_PrintBeforeFirstPage(h, v, label)                             */
/*                                                                           */
/*  This procedure is called just before starting to print the first         */
/*  component of the output.  Its size is h, v, and label is the page label. */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintBeforeFirstPage(FULL_LENGTH h, FULL_LENGTH v,
  FULL_CHAR *label)
{ int i, j;
  debug2(DPT, DD, "PrintBeforeFirst(%d, %d)", h, v);

  /* get a new page[] and clear it */
  hsize = ceiling(h, PlainCharWidth);
  vsize = ceiling(v, PlainCharHeight);
  debug2(DPT, DD, "  PlainCharWidth: %d;  PlainCharHeight: %d",
    PlainCharWidth, PlainCharHeight);
  ifdebug(DMA, D, DebugRegisterUsage(MEM_PAGES, 1,
    hsize * vsize * sizeof(FULL_CHAR)));
  debug2(DPT, DD, "  PrintBeforeFirst allocating %d by %d", hsize, vsize);
  page = (FULL_CHAR *) malloc(hsize * vsize * sizeof(FULL_CHAR));
  for( i = 0;  i < vsize;  i++ )
    for( j = 0;  j < hsize;  j++ )
      page[i*hsize + j] = ' ';
  prologue_done = TRUE;
} /* end Plain_PrintBeforeFirstPage */


/*****************************************************************************/
/*                                                                           */
/*  void Plain_PrintBetweenPages(h, v, label)                                */
/*                                                                           */
/*  Start a new output component, of size h by v; label is the page label    */
/*  to attach to the %%Page comment.                                         */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintBetweenPages(FULL_LENGTH h, FULL_LENGTH v,
  FULL_CHAR *label)
{ int new_hsize, new_vsize, i, j, jmax;
  debug2(DPT, DD, "PrintBetween(%d, %d)", h, v);

  /* print the page that has just ended */
  ifdebug(DPT, D,
    putc('+', out_fp);
    for( j = 0;  j < hsize;  j++ )  putc('-', out_fp);
    putc('+', out_fp);
    putc('\n', out_fp);
  );
  for( i = vsize - 1;  i >= 0;  i-- )
  { ifdebug(DPT, D, putc('|', out_fp));
    for( jmax = hsize-1;  jmax >= 0 && page[i*hsize+jmax] == ' ';  jmax--);
    ifdebug(DPT, D, jmax = hsize - 1);
    for( j = 0;  j <= jmax;  j++ )
      putc(page[i*hsize + j], out_fp);
    ifdebug(DPT, D, putc('|', out_fp));
    putc('\n', out_fp);
  }
  ifdebug(DPT, D,
    putc('+', out_fp);
    for( j = 0;  j < hsize;  j++ )  putc('-', out_fp);
    putc('+', out_fp);
    putc('\n', out_fp);
  );

  /* separate the page from the next one with a form-feed if required */
  if( PlainFormFeed ) putc('\f', out_fp);

  /* if page size has changed, get a new page[] array */
  new_hsize = ceiling(h, PlainCharWidth);
  new_vsize = ceiling(v, PlainCharHeight);
  if( new_hsize != hsize || new_vsize != vsize )
  {
    ifdebug(DMA, D, DebugRegisterUsage(MEM_PAGES, -1,
      -hsize * vsize * sizeof(FULL_CHAR)));
    free(page);
    hsize = new_hsize;
    vsize = new_vsize;
    debug2(DPT, DD, "  PrintBetween allocating %d by %d", hsize, vsize);
    ifdebug(DPT, D, DebugRegisterUsage(MEM_PAGES, 1,
      hsize * vsize * sizeof(FULL_CHAR)));
    page = (FULL_CHAR *) malloc(hsize * vsize * sizeof(FULL_CHAR));
  }

  /* clear page[] for the new page just beginning */
  for( i = 0;  i < vsize;  i++ )
    for( j = 0;  j < hsize;  j++ )
      page[i*hsize + j] = ' ';
} /* end Plain_PrintBetweenPges */


/*****************************************************************************/
/*                                                                           */
/*  Plain_PrintWord(x, hpos, vpos)                                           */
/*                                                                           */
/*  Print non-empty word x; its marks cross at the point (hpos, vpos).       */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintWord(OBJECT x, int hpos, int vpos)
{ FULL_CHAR *p;  int i, h, v;

  debug6(DPT, DD, "Plain_PrintWord( %s, %d, %d ) font %d colour %d%s",
    string(x), hpos, vpos, word_font(x), word_colour(x),
    word_outline(x) ? " outline" : "");
  TotalWordCount++;

  h = ((float) hpos / PlainCharWidth) + 0.5;
  v = ((float) vpos / PlainCharHeight);
  debug3(DPT, DD, "PrintWord(%s at h = %d, v = %d)", string(x), h, v);
  if( h >= 0 && h + StringLength(string(x)) < hsize && v >= 0 && v < vsize )
  {
    assert( h >= 0,     "PrintWord:  h < 0!" );
    assert( h <  hsize, "PrintWord:  h >= hsize!" );
    assert( v >= 0,     "PrintWord:  v < 0!" );
    assert( v <  vsize, "PrintWord:  v >= vsize!" );
    p = &page[v*hsize + h];
    for( i = 0;  string(x)[i] != '\0';  i++ )
      *p++ = string(x)[i];
  }
  else
    Error(51, 1, "word %s deleted (internal error, off page at %d,%d)",
      WARN, &fpos(x), string(x), h, v);
  debug0(DPT, DDD, "PrintWord returning");
} /* end Plain_PrintWord */


/*****************************************************************************/
/*                                                                           */
/*  Plain_PrintPlainGraphic(x, xmk, ymk, z)                                  */
/*                                                                           */
/*  Print plain graphic object x at xmk, ymk with the size of z.             */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintPlainGraphic(OBJECT x, FULL_LENGTH xmk,
  FULL_LENGTH ymk, OBJECT z)
{ int i, len, starth, startv, stoph, stopv, h, v;
  debug2(DPT, D, "Plain_PrintPlainGraphic(x, xmk %s, ymk %s)",
    EchoLength(xmk), EchoLength(ymk));

  if( type(x) != WORD && type(x) != QWORD )
  {
    Error(51, 2, "left parameter of %s must be a simple word",
      WARN, &fpos(x), KW_PLAINGRAPHIC);
    return;
  }
  len = StringLength(string(x));
  if( StringLength(string(x)) == 0 )
  {
    Error(51, 3, "left parameter of %s must be a non-empty word",
      WARN, &fpos(x), KW_PLAINGRAPHIC);
    return;
  }
  starth = (((float) xmk ) / PlainCharWidth) + 0.5;
  startv = (((float) ymk ) / PlainCharHeight);
  stoph = (((float) xmk + size(z, COLM)) / PlainCharWidth) + 0.5;
  stopv = (((float) ymk - size(z, ROWM)) / PlainCharHeight); /* NB - not + */
  SetLengthDim(COLM);
  debug5(DPT, D, "  xmk %s bk %s fwd %s -> %d,%d",
    EchoLength(xmk), EchoLength(back(z, COLM)), EchoLength(fwd(z, COLM)),
    starth, stoph);
  SetLengthDim(ROWM);
  debug5(DPT, D, "  ymk %s bk %s fwd %s -> %d,%d",
    EchoLength(ymk), EchoLength(back(z, ROWM)), EchoLength(fwd(z, ROWM)),
    startv, stopv);
  if( starth >= 0 && stoph < hsize && startv >= 0 && stopv < vsize )
  { i = 0;
    for( v = startv-1;  v >= stopv;  v-- )
    {
      for( h = starth;  h < stoph;  h++ )
      {
        if( i == len )  i = 0;
        page[v*hsize + h] = string(x)[i++];
      }
    }
  }
  else
  {
    Error(51, 4, "fill %s deleted (internal error, off page at %d,%d)",
      WARN, &fpos(x), string(x), h, v);
  }
} /* end Plain_PrintPlainGraphic */


/*****************************************************************************/
/*                                                                           */
/*  Plain_PrintUnderline(fnum, col, xstart, xstop, ymk)                      */
/*                                                                           */
/*  Draw an underline suitable for font fnum, in colour col, from xstart to  */
/*  xstop at the appropriate distance below mark ymk.                        */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintUnderline(FONT_NUM fnum, COLOUR_NUM col,
  FULL_LENGTH xstart, FULL_LENGTH xstop, FULL_LENGTH ymk)
{

  debug5(DPT, DD, "Plain_PrintUnderline(fnum %d, col %d, xstart %s, xstop %s, ymk %s )",
    fnum, col, EchoLength(xstart), EchoLength(xstop), EchoLength(ymk));

  /* do nothing */

  debug0(DPT, DD, "PrintUnderline returning.");
} /* end Plain_PrintUnderline */


/*****************************************************************************/
/*                                                                           */
/*  Plain_PrintAfterLastPage()                                               */
/*                                                                           */
/*  Clean up this module and close output stream.                            */
/*                                                                           */
/*****************************************************************************/

static void Plain_PrintAfterLastPage(void)
{ int i, j, jmax;
  if( prologue_done )
  { 
    /* print the page that has just ended (exists since prologue_done) */
    ifdebug(DPT, D,
      putc('+', out_fp);
      for( j = 0;  j < hsize;  j++ )  putc('-', out_fp);
      putc('+', out_fp);
      putc('\n', out_fp);
    );
    for( i = vsize - 1;  i >= 0;  i-- )
    { ifdebug(DPT, D, putc('|', out_fp));
      for( jmax = hsize-1;  jmax >= 0 && page[i*hsize+jmax] == ' ';  jmax--);
      ifdebug(DPT, D, jmax = hsize - 1);
      for( j = 0;  j <= jmax;  j++ )
        putc(page[i*hsize + j], out_fp);
      ifdebug(DPT, D, putc('|', out_fp));
      putc('\n', out_fp);
    }
    ifdebug(DPT, D,
      putc('+', out_fp);
      for( j = 0;  j < hsize;  j++ )  putc('-', out_fp);
      putc('+', out_fp);
      putc('\n', out_fp);
    );
  }
} /* end Plain_PrintAfterLastPage */


/*****************************************************************************/
/*                                                                           */
/*  Plain_CoordTranslate(xdist, ydist)                                       */
/*                                                                           */
/*  Translate coordinate system by the given x and y distances.              */
/*                                                                           */
/*****************************************************************************/

void Plain_CoordTranslate(FULL_LENGTH xdist, FULL_LENGTH ydist)
{ debug2(DPT, D, "Plain_CoordTranslate(%s, %s)",
    EchoLength(xdist), EchoLength(ydist));
  assert(FALSE, "Plain_CoordTranslate: should never be called!");
  debug0(DPT, D, "Plain_CoordTranslate returning.");
} /* end Plain_CoordTranslate */


/*****************************************************************************/
/*                                                                           */
/*  Plain_CoordRotate(amount)                                                */
/*                                                                           */
/*  Rotate coordinate system by given amount (in internal DG units)          */
/*                                                                           */
/*****************************************************************************/

static void Plain_CoordRotate(FULL_LENGTH amount)
{ debug1(DPT, D, "Plain_CoordRotate(%.1f degrees)", (float) amount / DG);
  assert(FALSE, "Plain_CoordRotate: should never be called!");
  debug0(DPT, D, "Plain_CoordRotate returning.");
} /* end Plain_CoordRotate */


/*****************************************************************************/
/*                                                                           */
/*  Plain_CoordScale(ratio, dim)                                             */
/*                                                                           */
/*  Scale coordinate system by ratio in the given dimension.                 */
/*                                                                           */
/*****************************************************************************/

void Plain_CoordScale(float hfactor, float vfactor)
{
  assert(FALSE, "Plain_CoordScale: should never be called!");
} /* end Plain_CoordScale */


/*****************************************************************************/
/*                                                                           */
/*  Plain_SaveGraphicState(x)                                                */
/*                                                                           */
/*  Save current coord system on stack for later restoration.                */
/*  Object x is just for error reporting, not really used at all.            */
/*                                                                           */
/*****************************************************************************/

void Plain_SaveGraphicState(OBJECT x)
{ debug0(DPT, D, "Plain_SaveGraphicState()");
  assert(FALSE, "Plain_SaveGraphicState: should never be called!" );
  debug0(DPT, D, "Plain_SaveGraphicState returning.");
} /* end Plain_SaveGraphicState */


/*****************************************************************************/
/*                                                                           */
/*  Plain_RestoreGraphicState()                                              */
/*                                                                           */
/*  Restore previously saved coordinate system.                              */
/*                                                                           */
/*****************************************************************************/

void Plain_RestoreGraphicState(void)
{ debug0(DPT, D, "Plain_RestoreGraphicState()");
  assert(FALSE, "Plain_RestoreGraphicState: should never be called!" );
  debug0(DPT, D, "Plain_RestoreGraphicState returning.");
} /* end Plain_RestoreGraphicState */


/*****************************************************************************/
/*                                                                           */
/*  Plain_PrintGraphicObject(x)                                              */
/*                                                                           */
/*  Print object x on out_fp                                                 */
/*                                                                           */
/*****************************************************************************/

void Plain_PrintGraphicObject(OBJECT x)
{
  debug3(DPT, D, "Plain_PrintGraphicObject(%s %s %s)",
    EchoFilePos(&fpos(x)), Image(type(x)), EchoObject(x));
  assert(FALSE, "Plain_PrintGraphicObject: should never be called!" );
  debug0(DPT, D, "Plain_PrintGraphicObject returning");
} /* end Plain_PrintGraphicObject */


/*****************************************************************************/
/*                                                                           */
/*  Plain_DefineGraphicNames(x)                                              */
/*                                                                           */
/*  Generate PostScript for xsize, ysize etc. names of graphic object.       */
/*                                                                           */
/*****************************************************************************/

void Plain_DefineGraphicNames(OBJECT x)
{
  debug1(DPT, D, "Plain_DefineGraphicNames( %s )", EchoObject(x));
  debug1(DPT, DD, "  style = %s", EchoStyle(&save_style(x)));
  assert(FALSE, "Plain_DefineGraphicNames: should never be called!" );
  debug0(DPT, D, "Plain_DefineGraphicNames returning.");
} /* end Plain_DefineGraphicNames */


/*****************************************************************************/
/*                                                                           */
/*  Plain_SaveTranslateDefineSave(x, xdist, ydist)                           */
/*                                                                           */
/*  Equivalent to the sequence of calls                                      */
/*                                                                           */
/*      SaveGraphicState(x)                                                  */
/*      CoordTranslate(xdist, ydist)                                         */
/*      DefineGraphicNames(x)                                                */
/*      SaveGraphicState(x)                                                  */
/*                                                                           */
/*  but offers opportunities for optimization.                               */
/*                                                                           */
/*****************************************************************************/

void Plain_SaveTranslateDefineSave(OBJECT x, FULL_LENGTH xdist,
  FULL_LENGTH ydist)
{
  assert(FALSE, "Plain_SaveTranslateDefineSave: should never be called!" );
} /* end Plain_SaveTranslateDefineSave */


/*****************************************************************************/
/*                                                                           */
/*  Plain_PrintGraphicInclude(x, colmark, rowmark)                           */
/*                                                                           */
/*  Print graphic include file, with appropriate surrounds.                  */
/*                                                                           */
/*****************************************************************************/

void Plain_PrintGraphicInclude(OBJECT x, FULL_LENGTH colmark,
  FULL_LENGTH rowmark)
{
  debug0(DPT, D, "Plain_PrintGraphicInclude(x)");
  assert(FALSE, "Plain_PrintGraphicInclude: should never be called!" );
  debug0(DPT, D, "Plain_PrintGraphicInclude returning.");
} /* end Plain_PrintGraphicInclude */


/*****************************************************************************/
/*                                                                           */
/*  Plain_LinkSource(name, llx, lly, urx, ury)                               */
/*                                                                           */
/*  Print a link source point.                                               */
/*                                                                           */
/*****************************************************************************/

static void Plain_LinkSource(OBJECT name, FULL_LENGTH llx, FULL_LENGTH lly,
  FULL_LENGTH urx, FULL_LENGTH ury)
{
  debug5(DPT, D, "Plain_LinkSource(%s, %d, %d, %d, %d)", EchoObject(name),
    llx, lly, urx, ury);
  /* do nothing; no links in plain text output */
  debug0(DPT, D, "Plain_LinkSource returning.");
} /* end Plain_LinkSource */


/*****************************************************************************/
/*                                                                           */
/*  Plain_LinkDest(name, llx, lly, urx, ury)                                 */
/*                                                                           */
/*  Print a link dest point.                                                 */
/*                                                                           */
/*  Still to do: check that the name has not been used by a previous         */
/*  dest point.                                                              */
/*                                                                           */
/*****************************************************************************/

static void Plain_LinkDest(OBJECT name, FULL_LENGTH llx, FULL_LENGTH lly,
  FULL_LENGTH urx, FULL_LENGTH ury)
{
  debug5(DPT, D, "Plain_LinkDest(%s, %d, %d, %d, %d)", EchoObject(name),
    llx, lly, urx, ury);
  /* do nothing; no links in plain text output */
  debug0(DPT, D, "Plain_LinkDest returning.");
} /* end Plain_LinkDest */


/*****************************************************************************/
/*                                                                           */
/*  Plain_LinkURL(url, llx, lly, urx, ury)                                   */
/*                                                                           */
/*  Print an external link.                                                  */
/*                                                                           */
/*****************************************************************************/

static void Plain_LinkURL(OBJECT url, FULL_LENGTH llx, FULL_LENGTH lly,
  FULL_LENGTH urx, FULL_LENGTH ury)
{
  debug5(DPT, D, "Plain_LinkURL(%s, %d, %d, %d, %d)", EchoObject(url),
    llx, lly, urx, ury);
  /* do nothing; no links in plain text output */
  debug0(DPT, D, "Plain_LinkURL returning.");
} /* end Plain_LinkDest */


/*****************************************************************************/
/*                                                                           */
/*  Plain_LinkCheck()                                                        */
/*                                                                           */
/*  Called at end of run; will check that for every link source point there  */
/*  is a link dest point.                                                    */
/*                                                                           */
/*****************************************************************************/

static void Plain_LinkCheck()
{
  debug0(DPT, D, "Plain_LinkCheck()");
  /* do nothing; no links in plain text output */
  debug0(DPT, D, "Plain_LinkCheck returning.");
} /* end Plain_LinkCheck */


/*****************************************************************************/
/*                                                                           */
/*  Plain_BackEnd                                                            */
/*                                                                           */
/*  The record into which all of these functions are packaged.               */
/*                                                                           */
/*****************************************************************************/

static struct back_end_rec plain_back = {
  PLAINTEXT,				/* the code number of the back end   */
  STR_PLAINTEXT,			/* string name of the back end       */
  FALSE,				/* TRUE if @Scale is available       */
  FALSE,				/* TRUE if @Rotate is available      */
  FALSE,				/* TRUE if @Graphic is available     */
  FALSE,				/* TRUE if @IncludeGraphic is avail. */
  TRUE,					/* TRUE if @PlainGraphic is avail.   */
  FALSE,				/* TRUE if fractional spacing avail. */
  FALSE,				/* TRUE if actual font metrics used  */
  FALSE,				/* TRUE if colour is available       */
  Plain_PrintInitialize,
  Plain_PrintLength,
  Plain_PrintPageSetupForFont,
  Plain_PrintPageResourceForFont,
  Plain_PrintMapping,
  Plain_PrintBeforeFirstPage,
  Plain_PrintBetweenPages,
  Plain_PrintAfterLastPage,
  Plain_PrintWord,
  Plain_PrintPlainGraphic,
  Plain_PrintUnderline,
  Plain_CoordTranslate,
  Plain_CoordRotate,
  Plain_CoordScale,
  Plain_SaveGraphicState,
  Plain_RestoreGraphicState,
  Plain_PrintGraphicObject,
  Plain_DefineGraphicNames,
  Plain_SaveTranslateDefineSave,
  Plain_PrintGraphicInclude,
  Plain_LinkSource,
  Plain_LinkDest,
  Plain_LinkURL,
  Plain_LinkCheck,
};

BACK_END Plain_BackEnd = &plain_back;