summaryrefslogtreecommitdiff
path: root/Build/source/texk/dvipdfm-x/xbb.c
blob: 1ade936ec782adf38698397df9db2cfdd6f7ffae (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
/* This is extractbb, a bounding box extraction program.
    Copyright (C) 2008-2019 by Jin-Hwan Cho and Matthias Franz
    and the dvipdfmx project team.

    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, see <http://www.gnu.org/licenses/>.
*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <time.h>
#include <string.h>

#include "dpxconf.h"
#include "dpxutil.h"

#include "numbers.h"
#include "system.h"
#include "mem.h"
#include "error.h"
#include "mfileio.h"
#include "pdfobj.h"
#include "pdfdoc.h"
#include "pdfparse.h"
#include "pdfdraw.h"

#include "bmpimage.h"
#include "jpegimage.h"
#include "jp2image.h"
#include "pngimage.h"

#include "dvipdfmx.h"
#include "pdflimits.h"

static enum pdf_page_boundary PageBox = pdf_page_boundary__auto;

static int Include_Page = 1;

static void show_version(void)
{
  fprintf (stdout, "\nThis is %s Version " VERSION "\n", my_name);
  fprintf (stdout, "\nCopyright (C) 2008-2019 by Jin-Hwan Cho and Matthias Franz\n");
  fprintf (stdout, "\nThis is free software; you can redistribute it and/or modify\n");
  fprintf (stdout, "it under the terms of the GNU General Public License as published by\n");
  fprintf (stdout, "the Free Software Foundation; either version 2 of the License, or\n");
  fprintf (stdout, "(at your option) any later version.\n");
}

static void show_usage(void)
{
  printf ("\nUsage: %s [-B pagebox] [-p page] [-q|-v] [-O] [-m|-x] FILE...\n", my_name);
  printf ("       %s --help|--version\n", my_name);
  printf ("Extract bounding box from PDF, PNG, JPEG, JP2, or BMP file; default output below.\n");
  printf ("\nOptions:\n");
  printf ("  -B pagebox\tSpecify a PDF pagebox for bounding box\n");
  printf ("            \tpagebox=cropbox, mediabox, artbox, trimbox, bleedbox\n");
  printf ("  -h | --help\tShow this help message and exit\n");
  printf ("  --version\tOutput version information and exit\n");
  printf ("  -p page\tSpecify a PDF page to extract bounding box\n");
  printf ("  -q\t\tBe quiet\n");
  printf ("  -v\t\tBe verbose\n");
  printf ("  -O\t\tWrite output to stdout\n");
  printf ("  -m\t\tOutput .bb  file used in DVIPDFM%s\n", my_name[1] == 'b' ? " (default)" : "");
  printf ("  -x\t\tOutput .xbb file used in DVIPDFMx%s\n", my_name[1] == 'b' ? "" : " (default)");
}

static void usage(void)
{
  fprintf(stdout, "\nTry \"%s --help\" for more information.\n", my_name);
  exit(1);
}

static void do_time(FILE *file)
{
  time_t current_time;
  struct tm *bd_time;

  current_time = dpx_util_get_unique_time_if_given();
  if (current_time == INVALID_EPOCH_VALUE) {
    time(&current_time);
    bd_time = localtime(&current_time);
  } else {
    bd_time = gmtime(&current_time);
  }
  fprintf(file, "%%%%CreationDate: %s\n", asctime(bd_time));
}

const char *extensions[] = {
  ".ai", ".AI", ".bmp", ".BMP", ".jpeg", ".JPEG", ".jpg", ".JPG",
  ".jp2", ".JP2", ".jpf", ".JPF", ".pdf", ".PDF", ".png", ".PNG"
};

static int xbb_to_file = 1;

static char *make_xbb_filename(const char *name)
{
  char *result;
  int   i;

  for (i = 0; i < sizeof(extensions) / sizeof(extensions[0]); i++) {
    if (strlen(extensions[i]) < strlen(name) &&
        strncmp(name+strlen(name)-strlen(extensions[i]), extensions[i], strlen(extensions[i])) == 0)
      break;
  }
  if (i == sizeof(extensions) / sizeof(extensions[0])) {
    WARN("%s: Filename does not end in a recognizable extension.\n", name);
    result = NEW(strlen(name)+strlen(".xbb")+1, char);
    strcpy(result, name);
  } else { /* Remove extension */
    size_t len;
    len    = strlen(name) - strlen(extensions[i]);
    result = NEW(len+strlen(".xbb")+1, char);
    strncpy(result, name, len);
    result[len] = 0;
  }
  strcat(result, ((dpx_conf.compat_mode == dpx_mode_compat_mode) ? ".bb" : ".xbb"));
  return result;
}

static void write_xbb(char *fname,
                      double bbllx_f, double bblly_f,
                      double bburx_f, double bbury_f,
                      int pdf_version, int pagecount)
{
  char *outname = NULL;
  FILE *fp = NULL;

  int bbllx = ROUND(bbllx_f, 1.0), bblly = ROUND(bblly_f, 1.0);
  int bburx = ROUND(bburx_f, 1.0), bbury = ROUND(bbury_f, 1.0);

  if (xbb_to_file) {
    outname = make_xbb_filename(fname);
    if (!kpse_out_name_ok(outname) || !(fp = MFOPEN(outname, FOPEN_W_MODE))) {
      ERROR("Unable to open output file: %s\n", outname);
    }
  } else {
    fp = stdout;
#ifdef WIN32
    setmode(fileno(fp), _O_BINARY);
#endif
  }

  if (dpx_conf.verbose_level > 0) {
    MESG("Writing to %s: ", xbb_to_file ? outname : "stdout");
    MESG("Bounding box: %d %d %d %d\n", bbllx, bblly, bburx, bbury);
  }

  fprintf(fp, "%%%%Title: %s\n", fname);
  fprintf(fp, "%%%%Creator: extractbb %s\n", VERSION);
  fprintf(fp, "%%%%BoundingBox: %d %d %d %d\n", bbllx, bblly, bburx, bbury);

  if (dpx_conf.compat_mode != dpx_mode_compat_mode) {
    /* Note:
     * According to Adobe Technical Note #5644, the arguments to
     * "%%HiResBoundingBox:" must be of type real. And according
     * to the PostScript Language Reference, a real number must
     * be written with a decimal point (or an exponent). Hence
     * it seems illegal to replace "0.0" by "0".
     */
    fprintf(fp, "%%%%HiResBoundingBox: %f %f %f %f\n",
            bbllx_f, bblly_f, bburx_f, bbury_f);
    if (pdf_version >= 0) {
      fprintf(fp, "%%%%PDFVersion: %d.%d\n", pdf_version/10, pdf_version%10);
      fprintf(fp, "%%%%Pages: %d\n", pagecount);
    }
  }

  do_time(fp);

  if (xbb_to_file) {
    RELEASE(outname);
    MFCLOSE(fp);
  }
}

static void do_bmp (FILE *fp, char *filename)
{
  int    width, height;
  double xdensity, ydensity;

  if (bmp_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
    WARN("%s does not look like a BMP file...\n", filename);
    return;
  }

  write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
  return;
}

static void do_jpeg (FILE *fp, char *filename)
{
  int    width, height;
  double xdensity, ydensity;

  if (jpeg_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
    WARN("%s does not look like a JPEG file...\n", filename);
    return;
  }

  write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
  return;
}

static void do_jp2 (FILE *fp, char *filename)
{
  int    width, height;
  double xdensity, ydensity;

  if (jp2_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
    WARN("%s does not look like a JP2/JPX file...\n", filename);
    return;
  }

  write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
  return;
}

#ifdef HAVE_LIBPNG
static void do_png (FILE *fp, char *filename)
{
  uint32_t width, height;
  double xdensity, ydensity;

  if (png_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
    WARN("%s does not look like a PNG file...\n", filename);
    return;
  }

  write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
  return;
}
#endif /* HAVE_LIBPNG */

static void do_pdf (FILE *fp, char *filename)
{
  pdf_obj *page;
  pdf_file *pf;
  int page_no = Include_Page;
  int count;
  pdf_rect bbox;
  pdf_tmatrix matrix;
  pdf_coord   p1, p2, p3, p4;

  pf = pdf_open(filename, fp);
  if (!pf) {
    WARN("%s does not look like a PDF file...\n", filename);
    return;
  }
  count = pdf_doc_get_page_count(pf);
  page  = pdf_doc_get_page(pf, page_no, PageBox, &bbox, &matrix, NULL);

  pdf_close(pf);

  if (!page)
    return;

  pdf_release_obj(page);

  /* Image's attribute "bbox" here is affected by /Rotate entry of included
   * PDF page.
   */
  p1.x = bbox.llx; p1.y = bbox.lly;
  pdf_dev_transform(&p1, &matrix);
  p2.x = bbox.urx; p2.y = bbox.lly;
  pdf_dev_transform(&p2, &matrix);
  p3.x = bbox.urx; p3.y = bbox.ury;
  pdf_dev_transform(&p3, &matrix);
  p4.x = bbox.llx; p4.y = bbox.ury;
  pdf_dev_transform(&p4, &matrix);

  bbox.llx = min4(p1.x, p2.x, p3.x, p4.x);
  bbox.lly = min4(p1.y, p2.y, p3.y, p4.y);
  bbox.urx = max4(p1.x, p2.x, p3.x, p4.x);
  bbox.ury = max4(p1.y, p2.y, p3.y, p4.y);

  write_xbb(filename, bbox.llx, bbox.lly, bbox.urx, bbox.ury,
            pdf_file_get_version(pf), count);
}

static const char *optstrig = ":hB:p:qvObmx";

static struct option long_options[] = {
  {"help", 0, 0, 'h'},
  {"version", 0, 0, 130},
  {0, 0, 0, 0}
};

int extractbb (int argc, char *argv[])
{
  int c;

  pdf_files_init();

  pdf_set_version(PDF_VERSION_MAX);

  opterr = 0;
  
  while ((c = getopt_long(argc, argv, optstrig, long_options, NULL)) != -1) {
    switch(c) {
    case 'h':
      show_usage();
      exit(0);

    case 130:
      show_version();
      exit(0);

    case 'B':
      if (strcasecmp (optarg, "cropbox") == 0) PageBox = pdf_page_boundary_cropbox;
      else if (strcasecmp (optarg, "mediabox") == 0) PageBox = pdf_page_boundary_mediabox;
      else if (strcasecmp (optarg, "artbox") == 0) PageBox = pdf_page_boundary_artbox; 
      else if (strcasecmp (optarg, "trimbox") == 0) PageBox = pdf_page_boundary_trimbox;
      else if (strcasecmp (optarg, "bleedbox") == 0) PageBox = pdf_page_boundary_bleedbox;
      else {
        fprintf(stderr, "%s: Invalid argument \"-B %s\"", my_name, optarg);
        usage();
      }
      break;

    case 'p':
      Include_Page = atol(optarg);
      if (Include_Page == 0)
        Include_Page = 1;
      break;

    case 'q':
      dpx_conf.verbose_level = 0;
      break;
    case 'v':
      dpx_conf.verbose_level++;
      break;

    case 'O':
      xbb_to_file = 0;
    case 'b':  /* Ignored for backward compatibility */
      break;

    case 'm':
      dpx_conf.compat_mode = dpx_mode_compat_mode;
      break;
    case 'x':
      dpx_conf.compat_mode = dpx_mode_normal_mode;
      break;

    default:
      fprintf(stderr, "%s: %s \"-%c\"", my_name,
              c == ':' ? "Missing argument for" : "Unknown option",
              optopt); 
      usage();
    }
  }

  if (optind >= argc) {
    fprintf (stderr, "%s: Missing filename argument", my_name);
    usage();
  }

  for (; optind < argc; optind++) {
    FILE *infile = NULL;
    char *kpse_file_name = NULL;

    if (kpse_in_name_ok(argv[optind])) {
      infile = MFOPEN(argv[optind], FOPEN_RBIN_MODE);
      if (infile) {
        kpse_file_name = xstrdup(argv[optind]);
      } else {
        kpse_file_name = kpse_find_pict(argv[optind]);
        if (kpse_file_name && kpse_in_name_ok(kpse_file_name))
          infile = MFOPEN(kpse_file_name, FOPEN_RBIN_MODE);
      }
    }
    if (infile == NULL) {
      WARN("Can't find file (%s), or it is forbidden to read ...skipping\n", argv[optind]);
      goto cont;
    }
    if (check_for_bmp(infile)) {
      do_bmp(infile, kpse_file_name);
      goto cont;
    }
    if (check_for_jpeg(infile)) {
      do_jpeg(infile, kpse_file_name);
      goto cont;
    }
    if (check_for_jp2(infile)) {
      do_jp2(infile, kpse_file_name);
      goto cont;
    }
    if (check_for_pdf(infile)) {
      do_pdf(infile, kpse_file_name);
      goto cont;
    }
#ifdef HAVE_LIBPNG
    if (check_for_png(infile)) {
      do_png(infile, kpse_file_name);
      goto cont;
    }
#endif /* HAVE_LIBPNG */
    WARN("Can't handle file type for file named %s\n", argv[optind]);
  cont:
    if (kpse_file_name)
      RELEASE(kpse_file_name);
    if (infile)
      MFCLOSE(infile);
  }

  pdf_files_close();

  return 0;
}