summaryrefslogtreecommitdiff
path: root/samples/pdfium_test.cc
blob: f15e19c75bf9a366b8306ce8388fd88df261e7e4 (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
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <list>
#include <sstream>
#include <string>
#include <utility>
#include <vector>

#include "../public/fpdf_dataavail.h"
#include "../public/fpdf_ext.h"
#include "../public/fpdf_formfill.h"
#include "../public/fpdf_text.h"
#include "../public/fpdfview.h"
#include "image_diff_png.h"
#ifdef PDF_ENABLE_V8
#include "v8/include/libplatform/libplatform.h"
#include "v8/include/v8.h"
#endif

#ifdef _WIN32
#define snprintf _snprintf
#define PATH_SEPARATOR '\\'
#else
#define PATH_SEPARATOR '/'
#endif

enum OutputFormat {
  OUTPUT_NONE,
  OUTPUT_PPM,
  OUTPUT_PNG,
#ifdef _WIN32
  OUTPUT_BMP,
  OUTPUT_EMF,
#endif
};

struct Options {
  Options() : output_format(OUTPUT_NONE) { }

  OutputFormat output_format;
  std::string scale_factor_as_string;
  std::string exe_path;
  std::string bin_directory;
  std::string font_directory;
};

// Reads the entire contents of a file into a newly malloc'd buffer.
static char* GetFileContents(const char* filename, size_t* retlen) {
  FILE* file = fopen(filename, "rb");
  if (!file) {
    fprintf(stderr, "Failed to open: %s\n", filename);
    return nullptr;
  }
  (void)fseek(file, 0, SEEK_END);
  size_t file_length = ftell(file);
  if (!file_length) {
    (void)fclose(file);
    return nullptr;
  }
  (void)fseek(file, 0, SEEK_SET);
  char* buffer = static_cast<char*>(malloc(file_length));
  if (!buffer) {
    (void)fclose(file);
    return nullptr;
  }
  size_t bytes_read = fread(buffer, 1, file_length, file);
  (void)fclose(file);
  if (bytes_read != file_length) {
    fprintf(stderr, "Failed to read: %s\n", filename);
    free(buffer);
    return nullptr;
  }
  *retlen = bytes_read;
  return buffer;
}

#ifdef PDF_ENABLE_V8
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
// Returns the full path for an external V8 data file based on either
// the currect exectuable path or an explicit override.
static std::string GetFullPathForSnapshotFile(const Options& options,
                                              const std::string& filename) {
  std::string result;
  if (!options.bin_directory.empty()) {
    result = options.bin_directory;
    if (*options.bin_directory.rbegin() != PATH_SEPARATOR) {
      result += PATH_SEPARATOR;
    }
  } else if (!options.exe_path.empty()) {
    size_t last_separator = options.exe_path.rfind(PATH_SEPARATOR);
    if (last_separator != std::string::npos)  {
      result = options.exe_path.substr(0, last_separator + 1);
    }
  }
  result += filename;
  return result;
}

// Reads an extenal V8 data file from the |options|-indicated location,
// returing true on success and false on error.
static bool GetExternalData(const Options& options,
                            const std::string& bin_filename,
                            v8::StartupData* result_data) {
  std::string full_path = GetFullPathForSnapshotFile(options, bin_filename);
  size_t data_length = 0;
  char* data_buffer = GetFileContents(full_path.c_str(), &data_length);
  if (!data_buffer) {
    return false;
  }
  result_data->data = const_cast<const char*>(data_buffer);
  result_data->raw_size = static_cast<int>(data_length);
  return true;
}
#endif  // V8_USE_EXTERNAL_STARTUP_DATA
#endif  // PDF_ENABLE_V8

static bool CheckDimensions(int stride, int width, int height) {
  if (stride < 0 || width < 0 || height < 0)
    return false;
  if (height > 0 && width > INT_MAX / height)
    return false;
  return true;
}

static void WritePpm(const char* pdf_name, int num, const void* buffer_void,
                     int stride, int width, int height) {
  const char* buffer = reinterpret_cast<const char*>(buffer_void);

  if (!CheckDimensions(stride, width, height))
    return;

  int out_len = width * height;
  if (out_len > INT_MAX / 3)
    return;
  out_len *= 3;

  char filename[256];
  snprintf(filename, sizeof(filename), "%s.%d.ppm", pdf_name, num);
  FILE* fp = fopen(filename, "wb");
  if (!fp)
    return;
  fprintf(fp, "P6\n# PDF test render\n%d %d\n255\n", width, height);
  // Source data is B, G, R, unused.
  // Dest data is R, G, B.
  char* result = new char[out_len];
  for (int h = 0; h < height; ++h) {
    const char* src_line = buffer + (stride * h);
    char* dest_line = result + (width * h * 3);
    for (int w = 0; w < width; ++w) {
      // R
      dest_line[w * 3] = src_line[(w * 4) + 2];
      // G
      dest_line[(w * 3) + 1] = src_line[(w * 4) + 1];
      // B
      dest_line[(w * 3) + 2] = src_line[w * 4];
    }
  }
  fwrite(result, out_len, 1, fp);
  delete[] result;
  fclose(fp);
}

static void WritePng(const char* pdf_name, int num, const void* buffer_void,
                     int stride, int width, int height) {
  if (!CheckDimensions(stride, width, height))
    return;

  std::vector<unsigned char> png_encoding;
  const unsigned char* buffer = static_cast<const unsigned char*>(buffer_void);
  if (!image_diff_png::EncodeBGRAPNG(
          buffer, width, height, stride, false, &png_encoding)) {
    fprintf(stderr, "Failed to convert bitmap to PNG\n");
    return;
  }

  char filename[256];
  int chars_formatted = snprintf(
      filename, sizeof(filename), "%s.%d.png", pdf_name, num);
  if (chars_formatted < 0 ||
      static_cast<size_t>(chars_formatted) >= sizeof(filename)) {
    fprintf(stderr, "Filname %s is too long\n", filename);
    return;
  }

  FILE* fp = fopen(filename, "wb");
  if (!fp) {
    fprintf(stderr, "Failed to open %s for output\n", filename);
    return;
  }

  size_t bytes_written = fwrite(
      &png_encoding.front(), 1, png_encoding.size(), fp);
  if (bytes_written != png_encoding.size())
    fprintf(stderr, "Failed to write to  %s\n", filename);

  (void)fclose(fp);
}

#ifdef _WIN32
static void WriteBmp(const char* pdf_name, int num, const void* buffer,
                     int stride, int width, int height) {
  if (stride < 0 || width < 0 || height < 0)
    return;
  if (height > 0 && width > INT_MAX / height)
    return;
  int out_len = stride * height;
  if (out_len > INT_MAX / 3)
    return;

  char filename[256];
  snprintf(filename, sizeof(filename), "%s.%d.bmp", pdf_name, num);
  FILE* fp = fopen(filename, "wb");
  if (!fp)
    return;

  BITMAPINFO bmi = {};
  bmi.bmiHeader.biSize = sizeof(bmi) - sizeof(RGBQUAD);
  bmi.bmiHeader.biWidth = width;
  bmi.bmiHeader.biHeight = -height;  // top-down image
  bmi.bmiHeader.biPlanes = 1;
  bmi.bmiHeader.biBitCount = 32;
  bmi.bmiHeader.biCompression = BI_RGB;
  bmi.bmiHeader.biSizeImage = 0;

  BITMAPFILEHEADER file_header = {};
  file_header.bfType = 0x4d42;
  file_header.bfSize = sizeof(file_header) + bmi.bmiHeader.biSize + out_len;
  file_header.bfOffBits = file_header.bfSize - out_len;

  fwrite(&file_header, sizeof(file_header), 1, fp);
  fwrite(&bmi, bmi.bmiHeader.biSize, 1, fp);
  fwrite(buffer, out_len, 1, fp);
  fclose(fp);
}

void WriteEmf(FPDF_PAGE page, const char* pdf_name, int num) {
  int width = static_cast<int>(FPDF_GetPageWidth(page));
  int height = static_cast<int>(FPDF_GetPageHeight(page));

  char filename[256];
  snprintf(filename, sizeof(filename), "%s.%d.emf", pdf_name, num);

  HDC dc = CreateEnhMetaFileA(nullptr, filename, nullptr, nullptr);

  HRGN rgn = CreateRectRgn(0, 0, width, height);
  SelectClipRgn(dc, rgn);
  DeleteObject(rgn);

  SelectObject(dc, GetStockObject(NULL_PEN));
  SelectObject(dc, GetStockObject(WHITE_BRUSH));
  // If a PS_NULL pen is used, the dimensions of the rectangle are 1 pixel less.
  Rectangle(dc, 0, 0, width + 1, height + 1);

  FPDF_RenderPage(dc, page, 0, 0, width, height, 0,
                  FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);

  DeleteEnhMetaFile(CloseEnhMetaFile(dc));
}
#endif

int ExampleAppAlert(IPDF_JSPLATFORM*, FPDF_WIDESTRING msg, FPDF_WIDESTRING,
                    int, int) {
  // Deal with differences between UTF16LE and wchar_t on this platform.
  size_t characters = 0;
  while (msg[characters]) {
    ++characters;
  }
  wchar_t* platform_string =
      static_cast<wchar_t*>(malloc((characters + 1) * sizeof(wchar_t)));
  for (size_t i = 0; i < characters + 1; ++i) {
    unsigned char* ptr = (unsigned char*)&msg[i];
    platform_string[i] = ptr[0] + 256 * ptr[1];
  }
  printf("Alert: %ls\n", platform_string);
  free(platform_string);
  return 0;
}

void ExampleDocGotoPage(IPDF_JSPLATFORM*, int pageNumber) {
  printf("Goto Page: %d\n", pageNumber);
}

void ExampleUnsupportedHandler(UNSUPPORT_INFO*, int type) {
  std::string feature = "Unknown";
  switch (type) {
    case FPDF_UNSP_DOC_XFAFORM:
      feature = "XFA";
      break;
    case FPDF_UNSP_DOC_PORTABLECOLLECTION:
      feature = "Portfolios_Packages";
      break;
    case FPDF_UNSP_DOC_ATTACHMENT:
    case FPDF_UNSP_ANNOT_ATTACHMENT:
      feature = "Attachment";
      break;
    case FPDF_UNSP_DOC_SECURITY:
      feature = "Rights_Management";
      break;
    case FPDF_UNSP_DOC_SHAREDREVIEW:
      feature = "Shared_Review";
      break;
    case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT:
    case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM:
    case FPDF_UNSP_DOC_SHAREDFORM_EMAIL:
      feature = "Shared_Form";
      break;
    case FPDF_UNSP_ANNOT_3DANNOT:
      feature = "3D";
      break;
    case FPDF_UNSP_ANNOT_MOVIE:
      feature = "Movie";
      break;
    case FPDF_UNSP_ANNOT_SOUND:
      feature = "Sound";
      break;
    case FPDF_UNSP_ANNOT_SCREEN_MEDIA:
    case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA:
      feature = "Screen";
      break;
    case FPDF_UNSP_ANNOT_SIG:
      feature = "Digital_Signature";
      break;
  }
  printf("Unsupported feature: %s.\n", feature.c_str());
}

bool ParseCommandLine(const std::vector<std::string>& args,
                      Options* options, std::list<std::string>* files) {
  if (args.empty()) {
    return false;
  }
  options->exe_path = args[0];
  size_t cur_idx = 1;
  for (; cur_idx < args.size(); ++cur_idx) {
    const std::string& cur_arg = args[cur_idx];
    if (cur_arg == "--ppm") {
      if (options->output_format != OUTPUT_NONE) {
        fprintf(stderr, "Duplicate or conflicting --ppm argument\n");
        return false;
      }
      options->output_format = OUTPUT_PPM;
    } else if (cur_arg == "--png") {
      if (options->output_format != OUTPUT_NONE) {
        fprintf(stderr, "Duplicate or conflicting --png argument\n");
        return false;
      }
      options->output_format = OUTPUT_PNG;
    } else if (cur_arg.size() > 11 &&
               cur_arg.compare(0, 11, "--font-dir=") == 0) {
      if (!options->font_directory.empty()) {
        fprintf(stderr, "Duplicate --font-dir argument\n");
        return false;
      }
      options->font_directory = cur_arg.substr(11);
    }

#ifdef _WIN32
    else if (cur_arg == "--emf") {
      if (options->output_format != OUTPUT_NONE) {
        fprintf(stderr, "Duplicate or conflicting --emf argument\n");
        return false;
      }
      options->output_format = OUTPUT_EMF;
    }
    else if (cur_arg == "--bmp") {
      if (options->output_format != OUTPUT_NONE) {
        fprintf(stderr, "Duplicate or conflicting --bmp argument\n");
        return false;
      }
      options->output_format = OUTPUT_BMP;
    }
#endif  // _WIN32
#ifdef PDF_ENABLE_V8
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
    else if (cur_arg.size() > 10 && cur_arg.compare(0, 10, "--bin-dir=") == 0) {
      if (!options->bin_directory.empty()) {
        fprintf(stderr, "Duplicate --bin-dir argument\n");
        return false;
      }
      options->bin_directory = cur_arg.substr(10);
    }
#endif  // V8_USE_EXTERNAL_STARTUP_DATA
#endif  // PDF_ENABLE_V8
    else if (cur_arg.size() > 8 && cur_arg.compare(0, 8, "--scale=") == 0) {
      if (!options->scale_factor_as_string.empty()) {
        fprintf(stderr, "Duplicate --scale argument\n");
        return false;
      }
      options->scale_factor_as_string = cur_arg.substr(8);
    }
    else
      break;
  }
  if (cur_idx >= args.size()) {
    fprintf(stderr, "No input files.\n");
    return false;
  }
  for (size_t i = cur_idx; i < args.size(); i++) {
    files->push_back(args[i]);
  }
  return true;
}

class TestLoader {
 public:
  TestLoader(const char* pBuf, size_t len);

  const char* m_pBuf;
  size_t m_Len;
};

TestLoader::TestLoader(const char* pBuf, size_t len)
    : m_pBuf(pBuf), m_Len(len) {
}

int GetBlock(void* param,
             unsigned long pos,
             unsigned char* pBuf,
             unsigned long size) {
  TestLoader* pLoader = static_cast<TestLoader*>(param);
  if (pos + size < pos || pos + size > pLoader->m_Len) return 0;
  memcpy(pBuf, pLoader->m_pBuf + pos, size);
  return 1;
}

FPDF_BOOL Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) {
  return true;
}

void Add_Segment(FX_DOWNLOADHINTS* pThis, size_t offset, size_t size) {
}

void RenderPdf(const std::string& name, const char* pBuf, size_t len,
               const Options& options) {
  fprintf(stderr, "Rendering PDF file %s.\n", name.c_str());

  IPDF_JSPLATFORM platform_callbacks;
  memset(&platform_callbacks, '\0', sizeof(platform_callbacks));
  platform_callbacks.version = 3;
  platform_callbacks.app_alert = ExampleAppAlert;
  platform_callbacks.Doc_gotoPage = ExampleDocGotoPage;

  FPDF_FORMFILLINFO form_callbacks;
  memset(&form_callbacks, '\0', sizeof(form_callbacks));
  form_callbacks.version = 1;
  form_callbacks.m_pJsPlatform = &platform_callbacks;

  TestLoader loader(pBuf, len);

  FPDF_FILEACCESS file_access;
  memset(&file_access, '\0', sizeof(file_access));
  file_access.m_FileLen = static_cast<unsigned long>(len);
  file_access.m_GetBlock = GetBlock;
  file_access.m_Param = &loader;

  FX_FILEAVAIL file_avail;
  memset(&file_avail, '\0', sizeof(file_avail));
  file_avail.version = 1;
  file_avail.IsDataAvail = Is_Data_Avail;

  FX_DOWNLOADHINTS hints;
  memset(&hints, '\0', sizeof(hints));
  hints.version = 1;
  hints.AddSegment = Add_Segment;

  FPDF_DOCUMENT doc;
  FPDF_AVAIL pdf_avail = FPDFAvail_Create(&file_avail, &file_access);

  (void)FPDFAvail_IsDocAvail(pdf_avail, &hints);

  if (FPDFAvail_IsLinearized(pdf_avail)) {
    fprintf(stderr, "Linearized path...\n");
    doc = FPDFAvail_GetDocument(pdf_avail, nullptr);
  } else {
    fprintf(stderr, "Non-linearized path...\n");
    doc = FPDF_LoadCustomDocument(&file_access, nullptr);
  }

  if (!doc) {
    fprintf(stderr, "Load pdf docs unsuccessful.\n");
    return;
  }

  (void)FPDF_GetDocPermissions(doc);
  (void)FPDFAvail_IsFormAvail(pdf_avail, &hints);

  FPDF_FORMHANDLE form = FPDFDOC_InitFormFillEnvironment(doc, &form_callbacks);
  FPDF_SetFormFieldHighlightColor(form, 0, 0xFFE4DD);
  FPDF_SetFormFieldHighlightAlpha(form, 100);

  int first_page = FPDFAvail_GetFirstPageNum(doc);
  (void)FPDFAvail_IsPageAvail(pdf_avail, first_page, &hints);

  int page_count = FPDF_GetPageCount(doc);
  for (int i = 0; i < page_count; ++i) {
    (void)FPDFAvail_IsPageAvail(pdf_avail, i, &hints);
  }

  FORM_DoDocumentJSAction(form);
  FORM_DoDocumentOpenAction(form);

  int rendered_pages = 0;
  int bad_pages = 0;
  for (int i = 0; i < page_count; ++i) {
    FPDF_PAGE page = FPDF_LoadPage(doc, i);
    if (!page) {
      ++bad_pages;
      continue;
    }
    FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
    FORM_OnAfterLoadPage(page, form);
    FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_OPEN);

    double scale = 1.0;
    if (!options.scale_factor_as_string.empty()) {
      std::stringstream(options.scale_factor_as_string) >> scale;
    }
    int width = static_cast<int>(FPDF_GetPageWidth(page) * scale);
    int height = static_cast<int>(FPDF_GetPageHeight(page) * scale);

    FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, 0);
    if (!bitmap) {
      fprintf(stderr, "Page was too large to be rendered.\n");
      bad_pages++;
      continue;
    }

    FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
    FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
    ++rendered_pages;

    FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
    int stride = FPDFBitmap_GetStride(bitmap);
    const char* buffer =
        reinterpret_cast<const char*>(FPDFBitmap_GetBuffer(bitmap));

    switch (options.output_format) {
#ifdef _WIN32
      case OUTPUT_BMP:
        WriteBmp(name.c_str(), i, buffer, stride, width, height);
        break;

      case OUTPUT_EMF:
        WriteEmf(page, name.c_str(), i);
        break;
#endif
      case OUTPUT_PNG:
        WritePng(name.c_str(), i, buffer, stride, width, height);
        break;

      case OUTPUT_PPM:
        WritePpm(name.c_str(), i, buffer, stride, width, height);
        break;

      default:
        break;
    }

    FPDFBitmap_Destroy(bitmap);

    FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_CLOSE);
    FORM_OnBeforeClosePage(page, form);
    FPDFText_ClosePage(text_page);
    FPDF_ClosePage(page);
  }

  FORM_DoDocumentAAction(form, FPDFDOC_AACTION_WC);
  FPDFDOC_ExitFormFillEnvironment(form);
  FPDF_CloseDocument(doc);
  FPDFAvail_Destroy(pdf_avail);

  fprintf(stderr, "Rendered %d pages.\n", rendered_pages);
  fprintf(stderr, "Skipped %d bad pages.\n", bad_pages);
}

static const char usage_string[] =
    "Usage: pdfium_test [OPTION] [FILE]...\n"
    "  --bin-dir=<path>  - override path to v8 external data\n"
    "  --font-dir=<path> - override path to external fonts\n"
    "  --scale=<number>  - scale output size by number (e.g. 0.5)\n"
#ifdef _WIN32
    "  --bmp - write page images <pdf-name>.<page-number>.bmp\n"
    "  --emf - write page meta files <pdf-name>.<page-number>.emf\n"
#endif
    "  --png - write page images <pdf-name>.<page-number>.png\n"
    "  --ppm - write page images <pdf-name>.<page-number>.ppm\n";

int main(int argc, const char* argv[]) {
  std::vector<std::string> args(argv, argv + argc);
  Options options;
  std::list<std::string> files;
  if (!ParseCommandLine(args, &options, &files)) {
    fprintf(stderr, "%s", usage_string);
    return 1;
  }

#ifdef PDF_ENABLE_V8
  v8::V8::InitializeICU();
  v8::Platform* platform = v8::platform::CreateDefaultPlatform();
  v8::V8::InitializePlatform(platform);
  v8::V8::Initialize();

  // By enabling predictable mode, V8 won't post any background tasks.
  static const char predictable_flag[] = "--predictable";
  v8::V8::SetFlagsFromString(predictable_flag,
                             static_cast<int>(strlen(predictable_flag)));

#ifdef V8_USE_EXTERNAL_STARTUP_DATA
  v8::StartupData natives;
  v8::StartupData snapshot;
  if (!GetExternalData(options, "natives_blob.bin", &natives) ||
      !GetExternalData(options, "snapshot_blob.bin", &snapshot)) {
    return 1;
  }
  v8::V8::SetNativesDataBlob(&natives);
  v8::V8::SetSnapshotDataBlob(&snapshot);
#endif  // V8_USE_EXTERNAL_STARTUP_DATA
#endif  // PDF_ENABLE_V8

  FPDF_LIBRARY_CONFIG config;
  config.version = 2;
  config.m_pUserFontPaths = nullptr;
  config.m_pIsolate = nullptr;
  config.m_v8EmbedderSlot = 0;

  const char* path_array[2];
  if (!options.font_directory.empty()) {
    path_array[0] = options.font_directory.c_str();
    path_array[1] = nullptr;
    config.m_pUserFontPaths = path_array;
  }
  FPDF_InitLibraryWithConfig(&config);

  UNSUPPORT_INFO unsuppored_info;
  memset(&unsuppored_info, '\0', sizeof(unsuppored_info));
  unsuppored_info.version = 1;
  unsuppored_info.FSDK_UnSupport_Handler = ExampleUnsupportedHandler;

  FSDK_SetUnSpObjProcessHandler(&unsuppored_info);

  while (!files.empty()) {
    std::string filename = files.front();
    files.pop_front();
    size_t file_length = 0;
    char* file_contents = GetFileContents(filename.c_str(), &file_length);
    if (!file_contents)
      continue;
    RenderPdf(filename, file_contents, file_length, options);
    free(file_contents);
  }

  FPDF_DestroyLibrary();
#ifdef PDF_ENABLE_V8
  v8::V8::ShutdownPlatform();
  delete platform;
#endif  // PDF_ENABLE_V8

  return 0;
}