summaryrefslogtreecommitdiff
path: root/Build/source/texk/dvipdfm-x/src/cmap_read.c
blob: 6128cf5084ae02633243882f4b992c62e67ad383 (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
/*  

    This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.

    Copyright (C) 2002-2012 by Jin-Hwan Cho and Shunsaku Hirata,
    the dvipdfmx project team.

    Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>

    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 of the License, 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.
*/

#include <string.h>

#include "system.h"
#include "mem.h"
#include "error.h"

#include "dpxutil.h"
#include "pst.h"

#include "cmap_p.h"
#include "cmap.h"

#include "cmap_read.h"

static int __verbose = 0;

#define CMAP_PARSE_DEBUG_STR "CMap_parse:"
#define CMAP_PARSE_DEBUG     3

#ifdef HAVE_DPXFILE
#include "dpxfile.h"
#else
#include "mfileio.h"

typedef struct {
  unsigned char *cursor;
  unsigned char *endptr;

  unsigned char *buf;
  long    max;
  FILE   *fp;
  long    unread;
} ifreader;

static ifreader *ifreader_create  (FILE *fp, long remain, long bufsize);
static long      ifreader_read    (ifreader *reader, long size);
static void      ifreader_destroy (ifreader *reader);

static ifreader *
ifreader_create (FILE *fp, long size, long bufsize)
{
  ifreader *reader;

  reader = NEW(1, ifreader);
  reader->buf = NEW(bufsize+1, unsigned char);
  reader->max = bufsize;
  reader->fp  = fp;
  reader->unread = size;

  reader->cursor = reader->endptr = reader->buf;
  *reader->endptr = 0;

  return reader;
}

static void
ifreader_destroy (ifreader *reader)
{
  ASSERT(reader);
  if (reader->buf)
    RELEASE(reader->buf);
  RELEASE(reader);
}


static long
ifreader_read (ifreader *reader, long size)
{
  long bytesread = 0, bytesrem = 0;

  ASSERT(reader);
  bytesrem = (long) reader->endptr - (long) reader->cursor;
  if (size > reader->max) {
    if (__verbose)
      MESG("\nExtending buffer (%ld bytes)...\n", size);
    reader->buf = RENEW(reader->buf, size+1, unsigned char);
    reader->max = size;
  }
  if (reader->unread > 0 && bytesrem < size) {
    bytesread = MIN(reader->max - bytesrem, reader->unread);
    memmove(reader->buf, reader->cursor, bytesrem);
    reader->cursor = reader->buf;
    reader->endptr = reader->buf + bytesrem;
    if (fread(reader->endptr, 1, bytesread, reader->fp) != bytesread)
      ERROR("Reading file failed.");
    reader->endptr += bytesread;
    reader->unread -= bytesread;
    if (__verbose)
      MESG("Reading more %ld bytes (%ld bytes remains in buffer)...\n", bytesread, bytesrem);
  }

  *reader->endptr = 0;

  return bytesread + bytesrem;
}
#define ifreader_need(f,s) ifreader_read((f),(s))

#endif /* HAVE_DPXFILE */

static int check_next_token  (ifreader *input, const char *key);
static int get_coderange     (ifreader *input, unsigned char *codeLo, unsigned char *codeHi, int *dim, int maxlen);

static int handle_codearray  (CMap *cmap, ifreader *input, unsigned char *codeLo, int dim, int count);
static int do_codespacerange (CMap *cmap, ifreader *input, int count);
static int do_notdefrange    (CMap *cmap, ifreader *input, int count);
static int do_bfrange        (CMap *cmap, ifreader *input, int count);
static int do_cidrange       (CMap *cmap, ifreader *input, int count);
static int do_notdefchar     (CMap *cmap, ifreader *input, int count);
static int do_bfchar         (CMap *cmap, ifreader *input, int count);
static int do_cidchar        (CMap *cmap, ifreader *input, int count);

#define TOKEN_LEN_MAX 127

static int
check_next_token (ifreader *input, const char *key)
{
  int      cmp;
  pst_obj *token;
  char    *str;

  if (ifreader_need(input, strlen(key)) < 0)
    return -1;
  if ((token = pst_get_token(&(input->cursor), input->endptr)) == NULL)
    return -1;

  str = (char *) pst_getSV(token);
  cmp = strcmp(str, key) ? -1 : 0;
  if (str)
    RELEASE(str);
  pst_release_obj(token);

  return cmp;
}

static int
get_coderange (ifreader *input,
	       unsigned char *codeLo, unsigned char *codeHi, int *dim, int maxlen)
{
  pst_obj *tok1, *tok2;
  int      dim1, dim2;

  if ((tok1 = pst_get_token(&(input->cursor), input->endptr)) == NULL)
    return -1;
  if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) == NULL) {
    pst_release_obj(tok1);
    return -1;
  }

  if (!PST_STRINGTYPE(tok1) || !PST_STRINGTYPE(tok2)) {
    pst_release_obj(tok1);
    pst_release_obj(tok2);
    return -1;
  }

  dim1 = pst_length_of(tok1);
  dim2 = pst_length_of(tok2);
  if (dim1 != dim2 || dim1 > maxlen) {
    pst_release_obj(tok1);
    pst_release_obj(tok2);
    return -1;
  }

  memcpy(codeLo, pst_data_ptr(tok1), dim1);
  memcpy(codeHi, pst_data_ptr(tok2), dim2);
  pst_release_obj(tok1);
  pst_release_obj(tok2);

  *dim = dim1;
  return 0;
}

static int
do_codespacerange (CMap *cmap, ifreader *input, int count)
{
  unsigned char codeLo[TOKEN_LEN_MAX], codeHi[TOKEN_LEN_MAX];
  int dim;

  while (count-- > 0) { 
    if (get_coderange(input, codeLo, codeHi, &dim, TOKEN_LEN_MAX) < 0)
      return -1;
    CMap_add_codespacerange(cmap, codeLo, codeHi, dim);
  }

  return check_next_token(input, "endcodespacerange");
}

/*
 * bfrange
 *  <codeLo> <codeHi> [destCode1 destCode2 ...]
 */
static int
handle_codearray (CMap *cmap, ifreader *input, unsigned char *codeLo, int dim, int count)
{
  pst_obj *tok = NULL;

  if (dim < 1)
    ERROR("Invalid code range.");
  while (count-- > 0) {
    if ((tok = pst_get_token(&(input->cursor), input->endptr)) == NULL)
      return -1;
    else if (PST_STRINGTYPE(tok)) {
      CMap_add_bfchar(cmap, codeLo, dim, (unsigned char *) pst_data_ptr(tok), (int) pst_length_of(tok));
    } else if (PST_MARKTYPE(tok) || !PST_NAMETYPE(tok))
      ERROR("%s: Invalid CMap mapping record.", CMAP_PARSE_DEBUG_STR);
    else
      ERROR("%s: Mapping to charName not supported.", CMAP_PARSE_DEBUG_STR);
    pst_release_obj(tok);
    codeLo[dim-1] += 1;
  }

  return check_next_token(input, "]");
}

static int
do_notdefrange (CMap *cmap, ifreader *input, int count)
{
  pst_obj *tok;
  unsigned char   codeLo[TOKEN_LEN_MAX], codeHi[TOKEN_LEN_MAX];
  long     dstCID;
  int      dim;

  while (count-- > 0) { 
    if (ifreader_need(input, TOKEN_LEN_MAX*3) < 0)
      return -1;
    if (get_coderange(input, codeLo, codeHi, &dim, TOKEN_LEN_MAX) < 0 ||
	(tok = pst_get_token(&(input->cursor), input->endptr)) == NULL)
      return -1;
    if (PST_INTEGERTYPE(tok)) {
      dstCID = pst_getIV(tok);
      if (dstCID >= 0 && dstCID <= CID_MAX)
	CMap_add_notdefrange(cmap, codeLo, codeHi, dim, (CID) dstCID);
    } else
      WARN("%s: Invalid CMap mapping record. (ignored)", CMAP_PARSE_DEBUG_STR);
    pst_release_obj(tok);
  }

  return check_next_token(input, "endnotdefrange");
}

static int
do_bfrange (CMap *cmap, ifreader *input, int count)
{
  pst_obj *tok; 
  unsigned char   codeLo[TOKEN_LEN_MAX], codeHi[TOKEN_LEN_MAX];
  int      srcdim;

  while (count-- > 0) { 
    if (ifreader_need(input, TOKEN_LEN_MAX*3) < 0)
      return -1;
    if (get_coderange(input, codeLo, codeHi, &srcdim, TOKEN_LEN_MAX) < 0    ||
	(tok = pst_get_token(&(input->cursor), input->endptr)) == NULL)
      return -1;
    if (PST_STRINGTYPE(tok)) {
      CMap_add_bfrange(cmap, codeLo, codeHi, srcdim,
		       (unsigned char *) pst_data_ptr(tok), (int) pst_length_of(tok));
    } else if (PST_MARKTYPE(tok)) {
      if (handle_codearray(cmap, input, codeLo, srcdim,
			   codeHi[srcdim-1] - codeLo[srcdim-1] + 1) < 0) {
	pst_release_obj(tok);
	return -1;
      }
    } else
      WARN("%s: Invalid CMap mapping record. (ignored)", CMAP_PARSE_DEBUG_STR);
    pst_release_obj(tok);
  }
  
  return check_next_token(input, "endbfrange");
}

static int
do_cidrange (CMap *cmap, ifreader *input, int count)
{
  pst_obj *tok;
  unsigned char   codeLo[TOKEN_LEN_MAX], codeHi[TOKEN_LEN_MAX];
  long     dstCID;
  int      dim;

  while (count-- > 0) { 
    if (ifreader_need(input, TOKEN_LEN_MAX*3) < 0)
      return -1;
    if (get_coderange(input, codeLo, codeHi, &dim, TOKEN_LEN_MAX) < 0 ||
	(tok = pst_get_token(&(input->cursor), input->endptr)) == NULL)
      return -1;
    if (PST_INTEGERTYPE(tok)) {
      dstCID = pst_getIV(tok);
      if (dstCID >= 0 && dstCID <= CID_MAX)
	CMap_add_cidrange(cmap, codeLo, codeHi, dim, (CID) dstCID);
    } else
      WARN("%s: Invalid CMap mapping record. (ignored)", CMAP_PARSE_DEBUG_STR);
    pst_release_obj(tok);
  }

  return check_next_token(input, "endcidrange");
}

static int
do_notdefchar (CMap *cmap, ifreader *input, int count)
{
  pst_obj *tok1, *tok2;
  long     dstCID;

  while (count-- > 0) { 
    if (ifreader_need(input, TOKEN_LEN_MAX*2) < 0)
      return -1;
    if ((tok1 = pst_get_token(&(input->cursor), input->endptr)) == NULL)
      return -1;
    if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) == NULL) {
      pst_release_obj(tok1);
      return -1;
    }
    if (PST_STRINGTYPE(tok1) && PST_INTEGERTYPE(tok2)) {
      dstCID = pst_getIV(tok2);
      if (dstCID >= 0 && dstCID <= CID_MAX)
	CMap_add_notdefchar(cmap, pst_data_ptr(tok1), pst_length_of(tok1), (CID) dstCID);
    } else
      WARN("%s: Invalid CMap mapping record. (ignored)", CMAP_PARSE_DEBUG_STR);
    pst_release_obj(tok1);
    pst_release_obj(tok2);
  }

  return check_next_token(input, "endnotdefchar");
}

static int
do_bfchar (CMap *cmap, ifreader *input, int count)
{
  pst_obj *tok1, *tok2;

  while (count-- > 0) { 
    if (ifreader_need(input, TOKEN_LEN_MAX*2) < 0)
      return -1;
    if ((tok1 = pst_get_token(&(input->cursor), input->endptr)) == NULL)
      return -1;
    if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) == NULL) {
      pst_release_obj(tok1);
      return -1;
    }
    /* We only support single CID font as descendant font, charName should not come here. */
    if (PST_STRINGTYPE(tok1) && PST_STRINGTYPE(tok2)) {
      CMap_add_bfchar(cmap,
		      (unsigned char *) pst_data_ptr(tok1), (int) pst_length_of(tok1),
		      (unsigned char *) pst_data_ptr(tok2), (int) pst_length_of(tok2));
    } else if (PST_NAMETYPE(tok2))
      ERROR("%s: Mapping to charName not supported.", CMAP_PARSE_DEBUG_STR);
    else
      WARN("%s: Invalid CMap mapping record. (ignored)", CMAP_PARSE_DEBUG_STR);
    pst_release_obj(tok1);
    pst_release_obj(tok2);
  }

  return check_next_token(input, "endbfchar");
}

static int
do_cidchar (CMap *cmap, ifreader *input, int count)
{
  pst_obj *tok1, *tok2;
  long     dstCID;

  while (count-- > 0) { 
    if (ifreader_need(input, TOKEN_LEN_MAX*2) < 0)
      return -1;
    if ((tok1 = pst_get_token(&(input->cursor), input->endptr)) == NULL)
      return -1;
    if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) == NULL) {
      pst_release_obj(tok1);
      return -1;
    }
    if (PST_STRINGTYPE(tok1) && PST_INTEGERTYPE(tok2)) {
      dstCID = pst_getIV(tok2);
      if (dstCID >= 0 && dstCID <= CID_MAX)
	CMap_add_cidchar(cmap, pst_data_ptr(tok1), pst_length_of(tok1), (CID) dstCID);
    } else
      WARN("%s: Invalid CMap mapping record. (ignored)", CMAP_PARSE_DEBUG_STR);
    pst_release_obj(tok1);
    pst_release_obj(tok2);
  }

  return check_next_token(input, "endcidchar");
}


#define MATCH_NAME(t,n) (PST_NAMETYPE((t))    && !memcmp(pst_data_ptr((t)),(n),strlen((n))))
#define MATCH_OP(t,n)   (PST_UNKNOWNTYPE((t)) && !memcmp(pst_data_ptr((t)),(n),strlen((n))))

static int
do_cidsysteminfo (CMap *cmap, ifreader *input)
{
  pst_obj   *tok1, *tok2;
  CIDSysInfo csi = {NULL, NULL, -1};
  int        simpledict = 0;
  int        error = 0;

  ifreader_need(input, TOKEN_LEN_MAX*2);
  /*
   * Assuming /CIDSystemInfo 3 dict dup begin .... end def
   * or /CIDSystemInfo << ... >> def
   */
  while ((tok1 = pst_get_token(&(input->cursor), input->endptr)) != NULL) {
    if (PST_MARKTYPE(tok1)) {
      simpledict = 1;
      pst_release_obj(tok1);
      break;
    } else if (MATCH_OP(tok1, "begin")) {
      simpledict = 0;
      pst_release_obj(tok1);
      break;
    } else {
      pst_release_obj(tok1);
      /* continue */
    }
  }
  tok1 = tok2 = NULL;
  while (!error &&
         (tok1 = pst_get_token(&(input->cursor), input->endptr)) != NULL) {
    if (MATCH_OP(tok1, ">>") && simpledict) {
      pst_release_obj(tok1);
      break;
    } else if (MATCH_OP(tok1, "end") && !simpledict) {
      pst_release_obj(tok1);
      break;
    } else if (MATCH_NAME(tok1, "Registry") &&
               (tok2 = pst_get_token(&(input->cursor), input->endptr)) != NULL) {
      if (!PST_STRINGTYPE(tok2))
        error = -1;
      else if (!simpledict &&
                check_next_token(input, "def"))
        error = -1;
      if (!error)
        csi.registry = (char *) pst_getSV(tok2);
    } else if (MATCH_NAME(tok1, "Ordering") &&
               (tok2 = pst_get_token(&(input->cursor), input->endptr)) != NULL) {
      if (!PST_STRINGTYPE(tok2))
        error = -1;
      else if (!simpledict &&
                check_next_token(input, "def"))
        error = -1;
      if (!error)
        csi.ordering = (char *) pst_getSV(tok2);
    } else if (MATCH_NAME(tok1, "Supplement") &&
               (tok2 = pst_get_token(&(input->cursor), input->endptr)) != NULL) {
      if (!PST_INTEGERTYPE(tok2))
        error = -1;
      else if (!simpledict &&
                check_next_token(input, "def"))
        error = -1;
      if (!error)
        csi.supplement = pst_getIV(tok2);
    }
    if (tok2)
      pst_release_obj(tok2);
    if (tok1)
      pst_release_obj(tok1);
    tok1 = tok2 = NULL;
  }
  if (!error &&
       check_next_token(input, "def"))
    error = -1;

  if (!error &&
       csi.registry && csi.ordering &&
       csi.supplement >= 0) {
    CMap_set_CIDSysInfo(cmap, &csi);
  }

  if (csi.registry)
    RELEASE(csi.registry);
  if (csi.ordering)
    RELEASE(csi.ordering);

  return  error;
}

#define INPUT_BUF_SIZE 4096
#define CMAP_SIG_MAX   64
int
CMap_parse_check_sig (FILE *fp)
{
  int  result = -1;
  char sig[CMAP_SIG_MAX+1];

  if (!fp)
    return -1;

  rewind(fp);
  if (fread(sig, sizeof(char), CMAP_SIG_MAX, fp) != CMAP_SIG_MAX)
    result = -1;
  else {
    sig[CMAP_SIG_MAX] = 0;
    if (strncmp(sig, "%!PS", 4))
      result = -1;
    else if (strstr(sig+4, "Resource-CMap"))
      result = 0;
  }
  rewind(fp);

  return result;
}

int
CMap_parse (CMap *cmap, FILE *fp)
{
  pst_obj  *tok1, *tok2;
  ifreader *input;
  int       status = 0, tmpint = -1;

  ASSERT(cmap && fp);

  input = ifreader_create(fp, file_size(fp), INPUT_BUF_SIZE-1);

  while (status >= 0) {
    tok1 = tok2 = NULL;
    ifreader_read(input, INPUT_BUF_SIZE/2);
    tok1 = pst_get_token(&(input->cursor), input->endptr);
    if (tok1 == NULL)
      break;
    else if (MATCH_NAME(tok1, "CMapName")) {
      if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) == NULL ||
	  !(PST_NAMETYPE(tok2) || PST_STRINGTYPE(tok2)) ||
	  check_next_token(input, "def") < 0)
	status = -1;
      else
	CMap_set_name(cmap, pst_data_ptr(tok2));
    } else if (MATCH_NAME(tok1, "CMapType")) {
      if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) == NULL ||
	  !PST_INTEGERTYPE(tok2) ||
	  check_next_token(input, "def") < 0)
	status = -1;
      else
	CMap_set_type(cmap, pst_getIV(tok2));
    } else if (MATCH_NAME(tok1, "WMode")) {
      if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) == NULL ||
	  !PST_INTEGERTYPE(tok2) ||
	  check_next_token(input, "def") < 0)
	status = -1;
      else
	CMap_set_wmode(cmap, pst_getIV(tok2));
    } else if (MATCH_NAME(tok1, "CIDSystemInfo")) {
      status = do_cidsysteminfo(cmap, input);
    } else if (MATCH_NAME(tok1, "Version") ||
	       MATCH_NAME(tok1, "UIDOffset") ||
	       MATCH_NAME(tok1, "XUID")) {
	/* Ignore */
    } else if (PST_NAMETYPE(tok1)) {
      /* Possibly usecmap comes next */
      if ((tok2 = pst_get_token(&(input->cursor), input->endptr)) != NULL &&
	  MATCH_OP(tok2, "usecmap")) {
	int   id;
	CMap *ucmap;
	id = CMap_cache_find(pst_data_ptr(tok1));
	if (id < 0)
	  status = -1;
	else {
	  ucmap = CMap_cache_get(id);
	  CMap_set_usecmap(cmap, ucmap);
	}
      }
    } else if (MATCH_OP(tok1, "begincodespacerange")) {
      status = do_codespacerange(cmap, input, tmpint);
    } else if (MATCH_OP(tok1, "beginnotdefrange")) {
      status = do_notdefrange(cmap, input, tmpint);
    } else if (MATCH_OP(tok1, "beginnotdefchar")) {
      status = do_notdefchar(cmap, input, tmpint);
    } else if (MATCH_OP(tok1, "beginbfrange")) {
      status = do_bfrange(cmap, input, tmpint);
    } else if (MATCH_OP(tok1, "beginbfchar")) {
      status =  do_bfchar(cmap, input, tmpint);
    } else if (MATCH_OP(tok1, "begincidrange")) {
      status = do_cidrange(cmap, input, tmpint);
    } else if (MATCH_OP(tok1, "begincidchar")) {
      status =  do_cidchar(cmap, input, tmpint);
    } else if (PST_INTEGERTYPE(tok1)) {
      tmpint = pst_getIV(tok1);
    } /* else Simply ignore */
    if (tok1)
      pst_release_obj(tok1);
    if (tok2)
      pst_release_obj(tok2);
  }

  ifreader_destroy(input);

  return (status < 0) ? -1 : CMap_is_valid(cmap);
}