pdfviewer: (part 1) store the offset of the location of object in file/stream. In order to use the …

experimental/PdfViewer/pdfparser/native/SkPdfNativeDoc.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPdfNativeDoc.h"
 #include "SkPdfNativeTokenizer.h"
 #include "SkPdfNativeObject.h"
@@ skipping 159 matching lines @@
 void SkPdfNativeDoc::loadWithoutXRef() {
     const unsigned char* current = fFileContent;
     const unsigned char* end = fFileContent + fContentLength;
 
     // TODO(edisonn): read pdf version
     current = ignoreLine(current, end);
 
     current = skipPdfWhiteSpaces(0, current, end);
     while (current < end) {
         SkPdfNativeObject token;
-        current = nextObject(0, current, end, &token, NULL, NULL);
+        current = nextObject(0, current, end, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
         if (token.isInteger()) {
             int id = (int)token.intValue();
 
             token.reset();
-            current = nextObject(0, current, end, &token, NULL, NULL);
+            current = nextObject(0, current, end, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
             // int generation = (int)token.intValue();  // TODO(edisonn): ignored for now
 
             token.reset();
-            current = nextObject(0, current, end, &token, NULL, NULL);
+            current = nextObject(0, current, end, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
             // TODO(edisonn): must be obj, return error if not? ignore ?
             if (!token.isKeyword("obj")) {
                 continue;
             }
 
             while (fObjects.count() < id + 1) {
                 reset(fObjects.append());
             }
 
             fObjects[id].fOffset = current - fFileContent;
 
             SkPdfNativeObject* obj = fAllocator->allocObject();
-            current = nextObject(0, current, end, obj, fAllocator, this);
+            current = nextObject(0, current, end, obj, fAllocator, this PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
 
             fObjects[id].fResolvedReference = obj;
             fObjects[id].fObj = obj;
 
             // set objects
         } else if (token.isKeyword("trailer")) {
             long dummy;
             current = readTrailer(current, end, true, &dummy, true);
         } else if (token.isKeyword("startxref")) {
             token.reset();
-            current = nextObject(0, current, end, &token, NULL, NULL);  // ignore
+            current = nextObject(0, current, end, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));  // ignore
         }
 
         current = skipPdfWhiteSpaces(0, current, end);
     }
 
     // TODO(edisonn): hack, detect root catalog - we need to implement liniarized support, and remove this hack.
     if (!fRootCatalogRef) {
         for (unsigned int i = 0 ; i < objects(); i++) {
             SkPdfNativeObject* obj = object(i);
             SkPdfNativeObject* root = (obj && obj->isDictionary()) ? obj->get("Root") : NULL;
@@ skipping 18 matching lines @@
 }
 
 // TODO(edisonn): NYI
 SkPdfNativeDoc::~SkPdfNativeDoc() {
     sk_free((void*)fFileContent);
     delete fAllocator;
 }
 
 const unsigned char* SkPdfNativeDoc::readCrossReferenceSection(const unsigned char* xrefStart, const unsigned char* trailerEnd) {
     SkPdfNativeObject xref;
-    const unsigned char* current = nextObject(0, xrefStart, trailerEnd, &xref, NULL, NULL);
+    const unsigned char* current = nextObject(0, xrefStart, trailerEnd, &xref, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
 
     if (!xref.isKeyword("xref")) {
         return trailerEnd;
     }
 
     SkPdfNativeObject token;
     while (current < trailerEnd) {
         token.reset();
         const unsigned char* previous = current;
-        current = nextObject(0, current, trailerEnd, &token, NULL, NULL);
+        current = nextObject(0, current, trailerEnd, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
         if (!token.isInteger()) {
             return previous;
         }
 
         int startId = (int)token.intValue();
         token.reset();
-        current = nextObject(0, current, trailerEnd, &token, NULL, NULL);
+        current = nextObject(0, current, trailerEnd, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
 
         if (!token.isInteger()) {
             // TODO(edisonn): report/warning
             return current;
         }
 
         int entries = (int)token.intValue();
 
         for (int i = 0; i < entries; i++) {
             token.reset();
-            current = nextObject(0, current, trailerEnd, &token, NULL, NULL);
+            current = nextObject(0, current, trailerEnd, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
             if (!token.isInteger()) {
                 // TODO(edisonn): report/warning
                 return current;
             }
             int offset = (int)token.intValue();
 
             token.reset();
-            current = nextObject(0, current, trailerEnd, &token, NULL, NULL);
+            current = nextObject(0, current, trailerEnd, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
             if (!token.isInteger()) {
                 // TODO(edisonn): report/warning
                 return current;
             }
             int generation = (int)token.intValue();
 
             token.reset();
-            current = nextObject(0, current, trailerEnd, &token, NULL, NULL);
+            current = nextObject(0, current, trailerEnd, &token, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
             if (!token.isKeyword() || token.lenstr() != 1 || (*token.c_str() != 'f' && *token.c_str() != 'n')) {
                 // TODO(edisonn): report/warning
                 return current;
             }
 
             addCrossSectionInfo(startId + i, generation, offset, *token.c_str() == 'f');
         }
     }
     // TODO(edisonn): it should never get here? there is no trailer?
     return current;
 }
 
 const unsigned char* SkPdfNativeDoc::readTrailer(const unsigned char* trailerStart, const unsigned char* trailerEnd, bool storeCatalog, long* prev, bool skipKeyword) {
     *prev = -1;
 
     const unsigned char* current = trailerStart;
     if (!skipKeyword) {
         SkPdfNativeObject trailerKeyword;
         // TODO(edisonn): use null allocator, and let it just fail if memory
         // needs allocated (but no crash)!
-        current = nextObject(0, current, trailerEnd, &trailerKeyword, NULL, NULL);
+        current = nextObject(0, current, trailerEnd, &trailerKeyword, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
 
         if (!trailerKeyword.isKeyword() || strlen("trailer") != trailerKeyword.lenstr() ||
             strncmp(trailerKeyword.c_str(), "trailer", strlen("trailer")) != 0) {
             // TODO(edisonn): report warning, rebuild trailer from objects.
             return current;
         }
     }
 
     SkPdfNativeObject token;
-    current = nextObject(0, current, trailerEnd, &token, fAllocator, NULL);
+    current = nextObject(0, current, trailerEnd, &token, fAllocator, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
     if (!token.isDictionary()) {
         return current;
     }
     SkPdfFileTrailerDictionary* trailer = (SkPdfFileTrailerDictionary*)&token;
     if (!trailer->valid()) {
         return current;
     }
 
     if (storeCatalog) {
         SkPdfNativeObject* ref = trailer->Root(NULL);
@@ skipping 34 matching lines @@
     const unsigned char* current = fFileContent + startOffset;
     const unsigned char* end = fFileContent + fContentLength;
 
     SkPdfNativeTokenizer tokenizer(current, end - current, fAllocator, this);
 
     SkPdfNativeObject idObj;
     SkPdfNativeObject generationObj;
     SkPdfNativeObject objKeyword;
     SkPdfNativeObject* dict = fAllocator->allocObject();
 
-    current = nextObject(0, current, end, &idObj, NULL, NULL);
+    current = nextObject(0, current, end, &idObj, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
     if (current >= end) {
         // TODO(edisonn): report warning/error
         return NULL;
     }
 
-    current = nextObject(0, current, end, &generationObj, NULL, NULL);
+    current = nextObject(0, current, end, &generationObj, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
     if (current >= end) {
         // TODO(edisonn): report warning/error
         return NULL;
     }
 
-    current = nextObject(0, current, end, &objKeyword, NULL, NULL);
+    current = nextObject(0, current, end, &objKeyword, NULL, NULL PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
     if (current >= end) {
         // TODO(edisonn): report warning/error
         return NULL;
     }
 
     if (!idObj.isInteger() || !generationObj.isInteger() || id != idObj.intValue()/* || generation != generationObj.intValue()*/) {
         // TODO(edisonn): report warning/error
     }
 
     if (!objKeyword.isKeyword() || strcmp(objKeyword.c_str(), "obj") != 0) {
         // TODO(edisonn): report warning/error
     }
 
-    current = nextObject(1, current, end, dict, fAllocator, this);
+    current = nextObject(1, current, end, dict, fAllocator, this PUT_TRACK_STREAM_ARGS_EXPL2(0, fFileContent));
 
     // TODO(edisonn): report warning/error - verify last token is endobj
 
     return dict;
 }
 
 void SkPdfNativeDoc::fillPages(SkPdfPageTreeNodeDictionary* tree) {
     SkPdfArray* kids = tree->Kids(this);
     if (kids == NULL) {
         *fPages.append() = (SkPdfPageObjectDictionary*)tree;
@@ skipping 87 matching lines @@
 
     return fObjects[i].fObj;
 }
 
 const SkPdfMapper* SkPdfNativeDoc::mapper() const {
     return fMapper;
 }
 
 SkPdfReal* SkPdfNativeDoc::createReal(double value) const {
     SkPdfNativeObject* obj = fAllocator->allocObject();
-    SkPdfNativeObject::makeReal(value, obj);
+    SkPdfNativeObject::makeReal(value, obj PUT_TRACK_PARAMETERS_SRC);
     return (SkPdfReal*)obj;
 }
 
 SkPdfInteger* SkPdfNativeDoc::createInteger(int value) const {
     SkPdfNativeObject* obj = fAllocator->allocObject();
-    SkPdfNativeObject::makeInteger(value, obj);
+    SkPdfNativeObject::makeInteger(value, obj PUT_TRACK_PARAMETERS_SRC);
     return (SkPdfInteger*)obj;
 }
 
 SkPdfString* SkPdfNativeDoc::createString(const unsigned char* sz, size_t len) const {
     SkPdfNativeObject* obj = fAllocator->allocObject();
-    SkPdfNativeObject::makeString(sz, len, obj);
+    SkPdfNativeObject::makeString(sz, len, obj PUT_TRACK_PARAMETERS_SRC);
     return (SkPdfString*)obj;
 }
 
 SkPdfAllocator* SkPdfNativeDoc::allocator() const {
     return fAllocator;
 }
 
 // TODO(edisonn): fix infinite loop if ref to itself!
 // TODO(edisonn): perf, fix refs at load, and resolve will simply return fResolvedReference?
 SkPdfNativeObject* SkPdfNativeDoc::resolveReference(SkPdfNativeObject* ref) {
@@ skipping 46 matching lines @@
     return (SkPdfNativeObject*)ref;
 }
 
 size_t SkPdfNativeDoc::bytesUsed() const {
     return fAllocator->bytesUsed() +
            fContentLength +
            fObjects.count() * sizeof(PublicObjectEntry) +
            fPages.count() * sizeof(SkPdfPageObjectDictionary*) +
            sizeof(*this);
 }