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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkPdfNativeDoc.h" | 8 #include "SkPdfNativeDoc.h" |
9 | 9 |
10 #include <stdio.h> | 10 #include <stdio.h> |
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119 | 119 |
120 if (strcmp((char*)xrefstartKeywordLine, "startxref") != 0) { | 120 if (strcmp((char*)xrefstartKeywordLine, "startxref") != 0) { |
121 SkPdfReport(kWarning_SkPdfIssueSeverity, kMissingToken_SkPdfIssue, | 121 SkPdfReport(kWarning_SkPdfIssueSeverity, kMissingToken_SkPdfIssue, |
122 "Could not find startxref", NULL, NULL); | 122 "Could not find startxref", NULL, NULL); |
123 } | 123 } |
124 | 124 |
125 long xrefByteOffset = atol((const char*)xrefByteOffsetLine); | 125 long xrefByteOffset = atol((const char*)xrefByteOffsetLine); |
126 | 126 |
127 bool storeCatalog = true; | 127 bool storeCatalog = true; |
128 while (xrefByteOffset >= 0) { | 128 while (xrefByteOffset >= 0) { |
129 const unsigned char* trailerStart = readCrossReferenceSection(fFileConte
nt + xrefByteOffset, | 129 const unsigned char* trailerStart = this->readCrossReferenceSection(fFil
eContent + xrefByteOffset, |
130 xrefstartK
eywordLine); | 130 xref
startKeywordLine); |
131 xrefByteOffset = -1; | 131 xrefByteOffset = -1; |
132 if (trailerStart < xrefstartKeywordLine) { | 132 if (trailerStart < xrefstartKeywordLine) { |
133 readTrailer(trailerStart, xrefstartKeywordLine, storeCatalog, &xrefB
yteOffset, false); | 133 this->readTrailer(trailerStart, xrefstartKeywordLine, storeCatalog,
&xrefByteOffset, false); |
134 storeCatalog = false; | 134 storeCatalog = false; |
135 } | 135 } |
136 } | 136 } |
137 | 137 |
138 // TODO(edisonn): warn/error expect fObjects[fRefCatalogId].fGeneration == f
RefCatalogGeneration | 138 // TODO(edisonn): warn/error expect fObjects[fRefCatalogId].fGeneration == f
RefCatalogGeneration |
139 // TODO(edisonn): security, verify that SkPdfCatalogDictionary is indeed usi
ng mapper | 139 // TODO(edisonn): security, verify that SkPdfCatalogDictionary is indeed usi
ng mapper |
140 | 140 |
141 if (fRootCatalogRef) { | 141 if (fRootCatalogRef) { |
142 fRootCatalog = (SkPdfCatalogDictionary*)resolveReference(fRootCatalogRef
); | 142 fRootCatalog = (SkPdfCatalogDictionary*)resolveReference(fRootCatalogRef
); |
143 if (fRootCatalog != NULL && fRootCatalog->isDictionary() && fRootCatalog
->valid()) { | 143 if (fRootCatalog != NULL && fRootCatalog->isDictionary() && fRootCatalog
->valid()) { |
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296 token.reset(); | 296 token.reset(); |
297 current = nextObject(current, trailerEnd, &token, NULL, NULL); | 297 current = nextObject(current, trailerEnd, &token, NULL, NULL); |
298 if (!token.isKeyword() || token.lenstr() != 1 || | 298 if (!token.isKeyword() || token.lenstr() != 1 || |
299 (*token.c_str() != 'f' && *token.c_str() != 'n')) { | 299 (*token.c_str() != 'f' && *token.c_str() != 'n')) { |
300 SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, | 300 SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, |
301 "readCrossReferenceSection: f or n exp
ected", | 301 "readCrossReferenceSection: f or n exp
ected", |
302 &token, SkPdfNativeObject::kKeyword_Pd
fObjectType, NULL); | 302 &token, SkPdfNativeObject::kKeyword_Pd
fObjectType, NULL); |
303 return current; | 303 return current; |
304 } | 304 } |
305 | 305 |
306 addCrossSectionInfo(startId + i, generation, offset, *token.c_str()
== 'f'); | 306 this->addCrossSectionInfo(startId + i, generation, offset, *token.c_
str() == 'f'); |
307 } | 307 } |
308 } | 308 } |
309 SkPdfReport(kInfo_SkPdfIssueSeverity, kNoIssue_SkPdfIssue, | 309 SkPdfReport(kInfo_SkPdfIssueSeverity, kNoIssue_SkPdfIssue, |
310 "Unexpected end of readCrossReferenceSection", NULL, NULL); | 310 "Unexpected end of readCrossReferenceSection", NULL, NULL); |
311 return current; | 311 return current; |
312 } | 312 } |
313 | 313 |
314 const unsigned char* SkPdfNativeDoc::readTrailer(const unsigned char* trailerSta
rt, | 314 const unsigned char* SkPdfNativeDoc::readTrailer(const unsigned char* trailerSta
rt, |
315 const unsigned char* trailerEnd
, | 315 const unsigned char* trailerEnd
, |
316 bool storeCatalog, long* prev,
bool skipKeyword) { | 316 bool storeCatalog, long* prev,
bool skipKeyword) { |
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356 if (trailer->has_Prev()) { | 356 if (trailer->has_Prev()) { |
357 *prev = (long)trailer->Prev(NULL); | 357 *prev = (long)trailer->Prev(NULL); |
358 } | 358 } |
359 | 359 |
360 return current; | 360 return current; |
361 } | 361 } |
362 | 362 |
363 void SkPdfNativeDoc::addCrossSectionInfo(int id, int generation, int offset, boo
l isFreed) { | 363 void SkPdfNativeDoc::addCrossSectionInfo(int id, int generation, int offset, boo
l isFreed) { |
364 // TODO(edisonn): security here, verify id | 364 // TODO(edisonn): security here, verify id |
365 while (fObjects.count() < id + 1) { | 365 while (fObjects.count() < id + 1) { |
366 reset(fObjects.append()); | 366 this->reset(fObjects.append()); |
367 } | 367 } |
368 | 368 |
369 fObjects[id].fOffset = offset; | 369 fObjects[id].fOffset = offset; |
370 fObjects[id].fObj = NULL; | 370 fObjects[id].fObj = NULL; |
371 fObjects[id].fResolvedReference = NULL; | 371 fObjects[id].fResolvedReference = NULL; |
372 fObjects[id].fIsReferenceResolved = false; | 372 fObjects[id].fIsReferenceResolved = false; |
373 } | 373 } |
374 | 374 |
375 SkPdfNativeObject* SkPdfNativeDoc::readObject(int id/*, int expectedGeneration*/
) { | 375 SkPdfNativeObject* SkPdfNativeDoc::readObject(int id/*, int expectedGeneration*/
) { |
376 long startOffset = fObjects[id].fOffset; | 376 long startOffset = fObjects[id].fOffset; |
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597 return (SkPdfNativeObject*)ref; | 597 return (SkPdfNativeObject*)ref; |
598 } | 598 } |
599 | 599 |
600 size_t SkPdfNativeDoc::bytesUsed() const { | 600 size_t SkPdfNativeDoc::bytesUsed() const { |
601 return fAllocator->bytesUsed() + | 601 return fAllocator->bytesUsed() + |
602 fContentLength + | 602 fContentLength + |
603 fObjects.count() * sizeof(PublicObjectEntry) + | 603 fObjects.count() * sizeof(PublicObjectEntry) + |
604 fPages.count() * sizeof(SkPdfPageObjectDictionary*) + | 604 fPages.count() * sizeof(SkPdfPageObjectDictionary*) + |
605 sizeof(*this); | 605 sizeof(*this); |
606 } | 606 } |
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