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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include <limits.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9 
10 #include <list>
11 #include <sstream>
12 #include <string>
13 #include <utility>
14 #include <vector>
15 
16 #include "image_diff_png.h"
17 #include "public/fpdf_dataavail.h"
18 #include "public/fpdf_edit.h"
19 #include "public/fpdf_ext.h"
20 #include "public/fpdf_formfill.h"
21 #include "public/fpdf_text.h"
22 #include "public/fpdfview.h"
23 #include "testing/test_support.h"
24 
25 #ifdef PDF_ENABLE_V8
26 #include "v8/include/libplatform/libplatform.h"
27 #include "v8/include/v8.h"
28 #endif  // PDF_ENABLE_V8
29 
30 #ifdef _WIN32
31 #define snprintf _snprintf
32 #endif
33 
34 enum OutputFormat {
35   OUTPUT_NONE,
36   OUTPUT_PPM,
37   OUTPUT_PNG,
38 #ifdef _WIN32
39   OUTPUT_BMP,
40   OUTPUT_EMF,
41 #endif
42 };
43 
44 struct Options {
OptionsOptions45   Options() : output_format(OUTPUT_NONE) { }
46 
47   OutputFormat output_format;
48   std::string scale_factor_as_string;
49   std::string exe_path;
50   std::string bin_directory;
51   std::string font_directory;
52 };
53 
CheckDimensions(int stride,int width,int height)54 static bool CheckDimensions(int stride, int width, int height) {
55   if (stride < 0 || width < 0 || height < 0)
56     return false;
57   if (height > 0 && width > INT_MAX / height)
58     return false;
59   return true;
60 }
61 
WritePpm(const char * pdf_name,int num,const void * buffer_void,int stride,int width,int height)62 static void WritePpm(const char* pdf_name, int num, const void* buffer_void,
63                      int stride, int width, int height) {
64   const char* buffer = reinterpret_cast<const char*>(buffer_void);
65 
66   if (!CheckDimensions(stride, width, height))
67     return;
68 
69   int out_len = width * height;
70   if (out_len > INT_MAX / 3)
71     return;
72   out_len *= 3;
73 
74   char filename[256];
75   snprintf(filename, sizeof(filename), "%s.%d.ppm", pdf_name, num);
76   FILE* fp = fopen(filename, "wb");
77   if (!fp)
78     return;
79   fprintf(fp, "P6\n# PDF test render\n%d %d\n255\n", width, height);
80   // Source data is B, G, R, unused.
81   // Dest data is R, G, B.
82   char* result = new char[out_len];
83   for (int h = 0; h < height; ++h) {
84     const char* src_line = buffer + (stride * h);
85     char* dest_line = result + (width * h * 3);
86     for (int w = 0; w < width; ++w) {
87       // R
88       dest_line[w * 3] = src_line[(w * 4) + 2];
89       // G
90       dest_line[(w * 3) + 1] = src_line[(w * 4) + 1];
91       // B
92       dest_line[(w * 3) + 2] = src_line[w * 4];
93     }
94   }
95   fwrite(result, out_len, 1, fp);
96   delete[] result;
97   fclose(fp);
98 }
99 
WritePng(const char * pdf_name,int num,const void * buffer_void,int stride,int width,int height)100 static void WritePng(const char* pdf_name, int num, const void* buffer_void,
101                      int stride, int width, int height) {
102   if (!CheckDimensions(stride, width, height))
103     return;
104 
105   std::vector<unsigned char> png_encoding;
106   const unsigned char* buffer = static_cast<const unsigned char*>(buffer_void);
107   if (!image_diff_png::EncodeBGRAPNG(
108           buffer, width, height, stride, false, &png_encoding)) {
109     fprintf(stderr, "Failed to convert bitmap to PNG\n");
110     return;
111   }
112 
113   char filename[256];
114   int chars_formatted = snprintf(
115       filename, sizeof(filename), "%s.%d.png", pdf_name, num);
116   if (chars_formatted < 0 ||
117       static_cast<size_t>(chars_formatted) >= sizeof(filename)) {
118     fprintf(stderr, "Filname %s is too long\n", filename);
119     return;
120   }
121 
122   FILE* fp = fopen(filename, "wb");
123   if (!fp) {
124     fprintf(stderr, "Failed to open %s for output\n", filename);
125     return;
126   }
127 
128   size_t bytes_written = fwrite(
129       &png_encoding.front(), 1, png_encoding.size(), fp);
130   if (bytes_written != png_encoding.size())
131     fprintf(stderr, "Failed to write to  %s\n", filename);
132 
133   (void)fclose(fp);
134 }
135 
136 #ifdef _WIN32
WriteBmp(const char * pdf_name,int num,const void * buffer,int stride,int width,int height)137 static void WriteBmp(const char* pdf_name, int num, const void* buffer,
138                      int stride, int width, int height) {
139   if (!CheckDimensions(stride, width, height))
140     return;
141 
142   int out_len = stride * height;
143   if (out_len > INT_MAX / 3)
144     return;
145 
146   char filename[256];
147   snprintf(filename, sizeof(filename), "%s.%d.bmp", pdf_name, num);
148   FILE* fp = fopen(filename, "wb");
149   if (!fp)
150     return;
151 
152   BITMAPINFO bmi = {};
153   bmi.bmiHeader.biSize = sizeof(bmi) - sizeof(RGBQUAD);
154   bmi.bmiHeader.biWidth = width;
155   bmi.bmiHeader.biHeight = -height;  // top-down image
156   bmi.bmiHeader.biPlanes = 1;
157   bmi.bmiHeader.biBitCount = 32;
158   bmi.bmiHeader.biCompression = BI_RGB;
159   bmi.bmiHeader.biSizeImage = 0;
160 
161   BITMAPFILEHEADER file_header = {};
162   file_header.bfType = 0x4d42;
163   file_header.bfSize = sizeof(file_header) + bmi.bmiHeader.biSize + out_len;
164   file_header.bfOffBits = file_header.bfSize - out_len;
165 
166   fwrite(&file_header, sizeof(file_header), 1, fp);
167   fwrite(&bmi, bmi.bmiHeader.biSize, 1, fp);
168   fwrite(buffer, out_len, 1, fp);
169   fclose(fp);
170 }
171 
WriteEmf(FPDF_PAGE page,const char * pdf_name,int num)172 void WriteEmf(FPDF_PAGE page, const char* pdf_name, int num) {
173   int width = static_cast<int>(FPDF_GetPageWidth(page));
174   int height = static_cast<int>(FPDF_GetPageHeight(page));
175 
176   char filename[256];
177   snprintf(filename, sizeof(filename), "%s.%d.emf", pdf_name, num);
178 
179   HDC dc = CreateEnhMetaFileA(nullptr, filename, nullptr, nullptr);
180 
181   HRGN rgn = CreateRectRgn(0, 0, width, height);
182   SelectClipRgn(dc, rgn);
183   DeleteObject(rgn);
184 
185   SelectObject(dc, GetStockObject(NULL_PEN));
186   SelectObject(dc, GetStockObject(WHITE_BRUSH));
187   // If a PS_NULL pen is used, the dimensions of the rectangle are 1 pixel less.
188   Rectangle(dc, 0, 0, width + 1, height + 1);
189 
190   FPDF_RenderPage(dc, page, 0, 0, width, height, 0,
191                   FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
192 
193   DeleteEnhMetaFile(CloseEnhMetaFile(dc));
194 }
195 #endif
196 
ExampleAppAlert(IPDF_JSPLATFORM *,FPDF_WIDESTRING msg,FPDF_WIDESTRING,int,int)197 int ExampleAppAlert(IPDF_JSPLATFORM*, FPDF_WIDESTRING msg, FPDF_WIDESTRING,
198                     int, int) {
199   std::wstring platform_string = GetPlatformWString(msg);
200   printf("Alert: %ls\n", platform_string.c_str());
201   return 0;
202 }
203 
ExampleDocGotoPage(IPDF_JSPLATFORM *,int pageNumber)204 void ExampleDocGotoPage(IPDF_JSPLATFORM*, int pageNumber) {
205   printf("Goto Page: %d\n", pageNumber);
206 }
207 
ExampleUnsupportedHandler(UNSUPPORT_INFO *,int type)208 void ExampleUnsupportedHandler(UNSUPPORT_INFO*, int type) {
209   std::string feature = "Unknown";
210   switch (type) {
211     case FPDF_UNSP_DOC_XFAFORM:
212       feature = "XFA";
213       break;
214     case FPDF_UNSP_DOC_PORTABLECOLLECTION:
215       feature = "Portfolios_Packages";
216       break;
217     case FPDF_UNSP_DOC_ATTACHMENT:
218     case FPDF_UNSP_ANNOT_ATTACHMENT:
219       feature = "Attachment";
220       break;
221     case FPDF_UNSP_DOC_SECURITY:
222       feature = "Rights_Management";
223       break;
224     case FPDF_UNSP_DOC_SHAREDREVIEW:
225       feature = "Shared_Review";
226       break;
227     case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT:
228     case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM:
229     case FPDF_UNSP_DOC_SHAREDFORM_EMAIL:
230       feature = "Shared_Form";
231       break;
232     case FPDF_UNSP_ANNOT_3DANNOT:
233       feature = "3D";
234       break;
235     case FPDF_UNSP_ANNOT_MOVIE:
236       feature = "Movie";
237       break;
238     case FPDF_UNSP_ANNOT_SOUND:
239       feature = "Sound";
240       break;
241     case FPDF_UNSP_ANNOT_SCREEN_MEDIA:
242     case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA:
243       feature = "Screen";
244       break;
245     case FPDF_UNSP_ANNOT_SIG:
246       feature = "Digital_Signature";
247       break;
248   }
249   printf("Unsupported feature: %s.\n", feature.c_str());
250 }
251 
ParseCommandLine(const std::vector<std::string> & args,Options * options,std::list<std::string> * files)252 bool ParseCommandLine(const std::vector<std::string>& args,
253                       Options* options, std::list<std::string>* files) {
254   if (args.empty()) {
255     return false;
256   }
257   options->exe_path = args[0];
258   size_t cur_idx = 1;
259   for (; cur_idx < args.size(); ++cur_idx) {
260     const std::string& cur_arg = args[cur_idx];
261     if (cur_arg == "--ppm") {
262       if (options->output_format != OUTPUT_NONE) {
263         fprintf(stderr, "Duplicate or conflicting --ppm argument\n");
264         return false;
265       }
266       options->output_format = OUTPUT_PPM;
267     } else if (cur_arg == "--png") {
268       if (options->output_format != OUTPUT_NONE) {
269         fprintf(stderr, "Duplicate or conflicting --png argument\n");
270         return false;
271       }
272       options->output_format = OUTPUT_PNG;
273     } else if (cur_arg.size() > 11 &&
274                cur_arg.compare(0, 11, "--font-dir=") == 0) {
275       if (!options->font_directory.empty()) {
276         fprintf(stderr, "Duplicate --font-dir argument\n");
277         return false;
278       }
279       options->font_directory = cur_arg.substr(11);
280     }
281 #ifdef _WIN32
282     else if (cur_arg == "--emf") {
283       if (options->output_format != OUTPUT_NONE) {
284         fprintf(stderr, "Duplicate or conflicting --emf argument\n");
285         return false;
286       }
287       options->output_format = OUTPUT_EMF;
288     }
289     else if (cur_arg == "--bmp") {
290       if (options->output_format != OUTPUT_NONE) {
291         fprintf(stderr, "Duplicate or conflicting --bmp argument\n");
292         return false;
293       }
294       options->output_format = OUTPUT_BMP;
295     }
296 #endif  // _WIN32
297 #ifdef PDF_ENABLE_V8
298 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
299     else if (cur_arg.size() > 10 && cur_arg.compare(0, 10, "--bin-dir=") == 0) {
300       if (!options->bin_directory.empty()) {
301         fprintf(stderr, "Duplicate --bin-dir argument\n");
302         return false;
303       }
304       options->bin_directory = cur_arg.substr(10);
305     }
306 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
307 #endif  // PDF_ENABLE_V8
308     else if (cur_arg.size() > 8 && cur_arg.compare(0, 8, "--scale=") == 0) {
309       if (!options->scale_factor_as_string.empty()) {
310         fprintf(stderr, "Duplicate --scale argument\n");
311         return false;
312       }
313       options->scale_factor_as_string = cur_arg.substr(8);
314     }
315     else
316       break;
317   }
318   if (cur_idx >= args.size()) {
319     fprintf(stderr, "No input files.\n");
320     return false;
321   }
322   for (size_t i = cur_idx; i < args.size(); i++) {
323     files->push_back(args[i]);
324   }
325   return true;
326 }
327 
Is_Data_Avail(FX_FILEAVAIL * pThis,size_t offset,size_t size)328 FPDF_BOOL Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) {
329   return true;
330 }
331 
Add_Segment(FX_DOWNLOADHINTS * pThis,size_t offset,size_t size)332 void Add_Segment(FX_DOWNLOADHINTS* pThis, size_t offset, size_t size) {
333 }
334 
RenderPage(const std::string & name,const FPDF_DOCUMENT & doc,const FPDF_FORMHANDLE & form,const int page_index,const Options & options)335 bool RenderPage(const std::string& name,
336                 const FPDF_DOCUMENT& doc,
337                 const FPDF_FORMHANDLE& form,
338                 const int page_index,
339                 const Options& options) {
340   FPDF_PAGE page = FPDF_LoadPage(doc, page_index);
341   if (!page) {
342     return false;
343   }
344   FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
345   FORM_OnAfterLoadPage(page, form);
346   FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_OPEN);
347 
348   double scale = 1.0;
349   if (!options.scale_factor_as_string.empty()) {
350     std::stringstream(options.scale_factor_as_string) >> scale;
351   }
352   int width = static_cast<int>(FPDF_GetPageWidth(page) * scale);
353   int height = static_cast<int>(FPDF_GetPageHeight(page) * scale);
354   int alpha = FPDFPage_HasTransparency(page) ? 1 : 0;
355   FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, alpha);
356   if (!bitmap) {
357     fprintf(stderr, "Page was too large to be rendered.\n");
358     return false;
359   }
360   FPDF_DWORD fill_color = alpha ? 0x00000000 : 0xFFFFFFFF;
361   FPDFBitmap_FillRect(bitmap, 0, 0, width, height, fill_color);
362   FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
363 
364   FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
365   int stride = FPDFBitmap_GetStride(bitmap);
366   const char* buffer =
367       reinterpret_cast<const char*>(FPDFBitmap_GetBuffer(bitmap));
368 
369   switch (options.output_format) {
370 #ifdef _WIN32
371     case OUTPUT_BMP:
372       WriteBmp(name.c_str(), page_index, buffer, stride, width, height);
373       break;
374 
375     case OUTPUT_EMF:
376       WriteEmf(page, name.c_str(), page_index);
377       break;
378 #endif
379     case OUTPUT_PNG:
380       WritePng(name.c_str(), page_index, buffer, stride, width, height);
381       break;
382 
383     case OUTPUT_PPM:
384       WritePpm(name.c_str(), page_index, buffer, stride, width, height);
385       break;
386 
387     default:
388       break;
389   }
390 
391   FPDFBitmap_Destroy(bitmap);
392   FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_CLOSE);
393   FORM_OnBeforeClosePage(page, form);
394   FPDFText_ClosePage(text_page);
395   FPDF_ClosePage(page);
396   return true;
397 }
398 
RenderPdf(const std::string & name,const char * pBuf,size_t len,const Options & options)399 void RenderPdf(const std::string& name, const char* pBuf, size_t len,
400                const Options& options) {
401   fprintf(stderr, "Rendering PDF file %s.\n", name.c_str());
402 
403   IPDF_JSPLATFORM platform_callbacks;
404   memset(&platform_callbacks, '\0', sizeof(platform_callbacks));
405   platform_callbacks.version = 3;
406   platform_callbacks.app_alert = ExampleAppAlert;
407   platform_callbacks.Doc_gotoPage = ExampleDocGotoPage;
408 
409   FPDF_FORMFILLINFO form_callbacks;
410   memset(&form_callbacks, '\0', sizeof(form_callbacks));
411 #ifdef PDF_ENABLE_XFA
412   form_callbacks.version = 2;
413 #else   // PDF_ENABLE_XFA
414   form_callbacks.version = 1;
415 #endif  // PDF_ENABLE_XFA
416   form_callbacks.m_pJsPlatform = &platform_callbacks;
417 
418   TestLoader loader(pBuf, len);
419   FPDF_FILEACCESS file_access;
420   memset(&file_access, '\0', sizeof(file_access));
421   file_access.m_FileLen = static_cast<unsigned long>(len);
422   file_access.m_GetBlock = TestLoader::GetBlock;
423   file_access.m_Param = &loader;
424 
425   FX_FILEAVAIL file_avail;
426   memset(&file_avail, '\0', sizeof(file_avail));
427   file_avail.version = 1;
428   file_avail.IsDataAvail = Is_Data_Avail;
429 
430   FX_DOWNLOADHINTS hints;
431   memset(&hints, '\0', sizeof(hints));
432   hints.version = 1;
433   hints.AddSegment = Add_Segment;
434 
435   FPDF_DOCUMENT doc;
436   int nRet = PDF_DATA_NOTAVAIL;
437   bool bIsLinearized = false;
438   FPDF_AVAIL pdf_avail = FPDFAvail_Create(&file_avail, &file_access);
439 
440   if (FPDFAvail_IsLinearized(pdf_avail) == PDF_LINEARIZED) {
441     fprintf(stderr, "Linearized path...\n");
442     doc = FPDFAvail_GetDocument(pdf_avail, nullptr);
443     if (doc) {
444       while (nRet == PDF_DATA_NOTAVAIL) {
445         nRet = FPDFAvail_IsDocAvail(pdf_avail, &hints);
446       }
447       if (nRet == PDF_DATA_ERROR) {
448         fprintf(stderr, "Unknown error in checking if doc was available.\n");
449         return;
450       }
451       nRet = FPDFAvail_IsFormAvail(pdf_avail, &hints);
452       if (nRet == PDF_FORM_ERROR || nRet == PDF_FORM_NOTAVAIL) {
453         fprintf(stderr,
454                 "Error %d was returned in checking if form was available.\n",
455                 nRet);
456         return;
457       }
458       bIsLinearized = true;
459     }
460   } else {
461     fprintf(stderr, "Non-linearized path...\n");
462     doc = FPDF_LoadCustomDocument(&file_access, nullptr);
463   }
464 
465   if (!doc) {
466     unsigned long err = FPDF_GetLastError();
467     fprintf(stderr, "Load pdf docs unsuccessful: ");
468     switch (err) {
469       case FPDF_ERR_SUCCESS:
470         fprintf(stderr, "Success");
471         break;
472       case FPDF_ERR_UNKNOWN:
473         fprintf(stderr, "Unknown error");
474         break;
475       case FPDF_ERR_FILE:
476         fprintf(stderr, "File not found or could not be opened");
477         break;
478       case FPDF_ERR_FORMAT:
479         fprintf(stderr, "File not in PDF format or corrupted");
480         break;
481       case FPDF_ERR_PASSWORD:
482         fprintf(stderr, "Password required or incorrect password");
483         break;
484       case FPDF_ERR_SECURITY:
485         fprintf(stderr, "Unsupported security scheme");
486         break;
487       case FPDF_ERR_PAGE:
488         fprintf(stderr, "Page not found or content error");
489         break;
490       default:
491         fprintf(stderr, "Unknown error %ld", err);
492     }
493     fprintf(stderr, ".\n");
494 
495     FPDFAvail_Destroy(pdf_avail);
496     return;
497   }
498 
499   (void)FPDF_GetDocPermissions(doc);
500 
501   FPDF_FORMHANDLE form = FPDFDOC_InitFormFillEnvironment(doc, &form_callbacks);
502 #ifdef PDF_ENABLE_XFA
503   int docType = DOCTYPE_PDF;
504   if (FPDF_HasXFAField(doc, &docType) && docType != DOCTYPE_PDF &&
505       !FPDF_LoadXFA(doc)) {
506     fprintf(stderr, "LoadXFA unsuccessful, continuing anyway.\n");
507   }
508 #endif  // PDF_ENABLE_XFA
509   FPDF_SetFormFieldHighlightColor(form, 0, 0xFFE4DD);
510   FPDF_SetFormFieldHighlightAlpha(form, 100);
511 
512   FORM_DoDocumentJSAction(form);
513   FORM_DoDocumentOpenAction(form);
514 
515   int page_count = FPDF_GetPageCount(doc);
516   int rendered_pages = 0;
517   int bad_pages = 0;
518   for (int i = 0; i < page_count; ++i) {
519     if (bIsLinearized) {
520       nRet = PDF_DATA_NOTAVAIL;
521       while (nRet == PDF_DATA_NOTAVAIL) {
522         nRet = FPDFAvail_IsPageAvail(pdf_avail, i, &hints);
523       }
524       if (nRet == PDF_DATA_ERROR) {
525         fprintf(stderr, "Unknown error in checking if page %d is available.\n",
526                 i);
527         return;
528       }
529     }
530     if (RenderPage(name, doc, form, i, options)) {
531       ++rendered_pages;
532     } else {
533       ++bad_pages;
534     }
535   }
536 
537   FORM_DoDocumentAAction(form, FPDFDOC_AACTION_WC);
538 
539 #ifdef PDF_ENABLE_XFA
540   // Note: The shut down order here is the reverse of the non-XFA branch order.
541   // Need to work out if this is required, and if it is, the lifetimes of
542   // objects owned by |doc| that |form| reference.
543   FPDF_CloseDocument(doc);
544   FPDFDOC_ExitFormFillEnvironment(form);
545 #else  // PDF_ENABLE_XFA
546   FPDFDOC_ExitFormFillEnvironment(form);
547   FPDF_CloseDocument(doc);
548 #endif  // PDF_ENABLE_XFA
549 
550   FPDFAvail_Destroy(pdf_avail);
551 
552   fprintf(stderr, "Rendered %d pages.\n", rendered_pages);
553   fprintf(stderr, "Skipped %d bad pages.\n", bad_pages);
554 }
555 
556 static const char usage_string[] =
557     "Usage: pdfium_test [OPTION] [FILE]...\n"
558     "  --bin-dir=<path>  - override path to v8 external data\n"
559     "  --font-dir=<path> - override path to external fonts\n"
560     "  --scale=<number>  - scale output size by number (e.g. 0.5)\n"
561 #ifdef _WIN32
562     "  --bmp - write page images <pdf-name>.<page-number>.bmp\n"
563     "  --emf - write page meta files <pdf-name>.<page-number>.emf\n"
564 #endif  // _WIN32
565     "  --png - write page images <pdf-name>.<page-number>.png\n"
566     "  --ppm - write page images <pdf-name>.<page-number>.ppm\n";
567 
main(int argc,const char * argv[])568 int main(int argc, const char* argv[]) {
569   std::vector<std::string> args(argv, argv + argc);
570   Options options;
571   std::list<std::string> files;
572   if (!ParseCommandLine(args, &options, &files)) {
573     fprintf(stderr, "%s", usage_string);
574     return 1;
575   }
576 
577 #ifdef PDF_ENABLE_V8
578   v8::Platform* platform;
579 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
580   v8::StartupData natives;
581   v8::StartupData snapshot;
582   InitializeV8ForPDFium(options.exe_path, options.bin_directory, &natives,
583                         &snapshot, &platform);
584 #else   // V8_USE_EXTERNAL_STARTUP_DATA
585   InitializeV8ForPDFium(&platform);
586 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
587 #endif  // PDF_ENABLE_V8
588 
589   FPDF_LIBRARY_CONFIG config;
590   config.version = 2;
591   config.m_pUserFontPaths = nullptr;
592   config.m_pIsolate = nullptr;
593   config.m_v8EmbedderSlot = 0;
594 
595   const char* path_array[2];
596   if (!options.font_directory.empty()) {
597     path_array[0] = options.font_directory.c_str();
598     path_array[1] = nullptr;
599     config.m_pUserFontPaths = path_array;
600   }
601   FPDF_InitLibraryWithConfig(&config);
602 
603   UNSUPPORT_INFO unsuppored_info;
604   memset(&unsuppored_info, '\0', sizeof(unsuppored_info));
605   unsuppored_info.version = 1;
606   unsuppored_info.FSDK_UnSupport_Handler = ExampleUnsupportedHandler;
607 
608   FSDK_SetUnSpObjProcessHandler(&unsuppored_info);
609 
610   while (!files.empty()) {
611     std::string filename = files.front();
612     files.pop_front();
613     size_t file_length = 0;
614     std::unique_ptr<char, pdfium::FreeDeleter> file_contents =
615         GetFileContents(filename.c_str(), &file_length);
616     if (file_contents)
617       RenderPdf(filename, file_contents.get(), file_length, options);
618   }
619 
620   FPDF_DestroyLibrary();
621 #ifdef PDF_ENABLE_V8
622   v8::V8::ShutdownPlatform();
623   delete platform;
624 #endif  // PDF_ENABLE_V8
625 
626   return 0;
627 }
628