AuroraMiddleware/skia2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

pdfviewer: more load references dinamically plumming

Browse Source 
Review URL: https://codereview.chromium.org/18536014

git-svn-id: http://skia.googlecode.com/svn/trunk@9988 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
edisonn@google.com 2013-07-10 23:17:31 +00:00
parent 432640ae0b
commit 951d6532de
5 changed files with 54 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
experimental/PdfViewer/generate_code.py
View File

@ -374,8 +374,8 @@ class PdfClassManager:
if len(prop.fTypes.split()) == 1:
t = prop.fTypes.strip()
nativeFileClass.write(' ' + knowTypes[t][0] + ' ' + prop.fCppName + '(const SkNativeParsedPDF* doc);\n')
nativeFileClassCpp.write('' + knowTypes[t][0] + ' SkPdf' + cls.fName + '::' + prop.fCppName + '(const SkNativeParsedPDF* doc) {\n')
nativeFileClass.write(' ' + knowTypes[t][0] + ' ' + prop.fCppName + '(SkNativeParsedPDF* doc);\n')
nativeFileClassCpp.write('' + knowTypes[t][0] + ' SkPdf' + cls.fName + '::' + prop.fCppName + '(SkNativeParsedPDF* doc) {\n')
nativeFileClassCpp.write(' SkPdfObject* ret = get(\"' + prop.fName + '\", \"' + prop.fAbr + '\");\n')
nativeFileClassCpp.write(' if (doc) {ret = doc->resolveReference(ret);}\n')
nativeFileClassCpp.write(' if ((ret != NULL && ' + knowTypes[t][3] + ') || (doc == NULL && ret != NULL && ret->isReference())) return ' + knowTypes[t][1] + ';\n')
@ -395,17 +395,17 @@ class PdfClassManager:
for type in prop.fTypes.split():
t = type.strip()
nativeFileClass.write(' bool is' + prop.fCppName + 'A' + t.title() + '(const SkNativeParsedPDF* doc);\n')
nativeFileClass.write(' bool is' + prop.fCppName + 'A' + t.title() + '(SkNativeParsedPDF* doc);\n')
nativeFileClassCpp.write('bool SkPdf' + cls.fName + '::is' + prop.fCppName + 'A' + t.title() + '(const SkNativeParsedPDF* doc) {\n')
nativeFileClassCpp.write('bool SkPdf' + cls.fName + '::is' + prop.fCppName + 'A' + t.title() + '(SkNativeParsedPDF* doc) {\n')
nativeFileClassCpp.write(' SkPdfObject* ret = get(\"' + prop.fName + '\", \"' + prop.fAbr + '\");\n')
nativeFileClassCpp.write(' if (doc) {ret = doc->resolveReference(ret);}\n')
nativeFileClassCpp.write(' return ret != NULL && ' + knowTypes[t][3] + ';\n')
nativeFileClassCpp.write('}\n')
nativeFileClassCpp.write('\n')
nativeFileClass.write(' ' + knowTypes[t][0] + ' get' + prop.fCppName + 'As' + t.title() + '(const SkNativeParsedPDF* doc);\n')
nativeFileClassCpp.write('' + knowTypes[t][0] + ' SkPdf' + cls.fName + '::get' + prop.fCppName + 'As' + t.title() + '(const SkNativeParsedPDF* doc) {\n')
nativeFileClass.write(' ' + knowTypes[t][0] + ' get' + prop.fCppName + 'As' + t.title() + '(SkNativeParsedPDF* doc);\n')
nativeFileClassCpp.write('' + knowTypes[t][0] + ' SkPdf' + cls.fName + '::get' + prop.fCppName + 'As' + t.title() + '(SkNativeParsedPDF* doc) {\n')
nativeFileClassCpp.write(' SkPdfObject* ret = get(\"' + prop.fName + '\", \"' + prop.fAbr + '\");\n')
nativeFileClassCpp.write(' if (doc) {ret = doc->resolveReference(ret);}\n')
@ -468,11 +468,11 @@ class PdfClassManager:
fileMapperNative.write('class SkPdfMapper {\n')
fileMapperNative.write(' const SkNativeParsedPDF* fParsedDoc;\n')
fileMapperNative.write(' SkNativeParsedPDF* fParsedDoc;\n')
fileMapperNative.write('public:\n')
fileMapperNative.write(' SkPdfMapper(const SkNativeParsedPDF* doc) : fParsedDoc(doc) {}\n')
fileMapperNative.write(' SkPdfMapper(SkNativeParsedPDF* doc) : fParsedDoc(doc) {}\n')
fileMapperNative.write('\n')
for name in self.fClassesNamesInOrder:

42
experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.cpp
View File

@ -128,14 +128,14 @@ unsigned char* SkNativeParsedPDF::readCrossReferenceSection(unsigned char* xrefS
while (current < trailerEnd) {
token.reset();
unsigned char* previous = current;
current = nextObject(current, trailerEnd, &token, NULL);
current = nextObject(current, trailerEnd, &token, NULL, NULL);
if (!token.isInteger()) {
return previous;
}
int startId = (int)token.intValue();
token.reset();
current = nextObject(current, trailerEnd, &token, NULL);
current = nextObject(current, trailerEnd, &token, NULL, NULL);
if (!token.isInteger()) {
// TODO(edisonn): report/warning
@ -146,7 +146,7 @@ unsigned char* SkNativeParsedPDF::readCrossReferenceSection(unsigned char* xrefS
for (int i = 0; i < entries; i++) {
token.reset();
current = nextObject(current, trailerEnd, &token, NULL);
current = nextObject(current, trailerEnd, &token, NULL, NULL);
if (!token.isInteger()) {
// TODO(edisonn): report/warning
return current;
@ -154,7 +154,7 @@ unsigned char* SkNativeParsedPDF::readCrossReferenceSection(unsigned char* xrefS
int offset = (int)token.intValue();
token.reset();
current = nextObject(current, trailerEnd, &token, NULL);
current = nextObject(current, trailerEnd, &token, NULL, NULL);
if (!token.isInteger()) {
// TODO(edisonn): report/warning
return current;
@ -162,7 +162,7 @@ unsigned char* SkNativeParsedPDF::readCrossReferenceSection(unsigned char* xrefS
int generation = (int)token.intValue();
token.reset();
current = nextObject(current, trailerEnd, &token, NULL);
current = nextObject(current, trailerEnd, &token, NULL, NULL);
if (!token.isKeyword() || token.len() != 1 || (*token.c_str() != 'f' && *token.c_str() != 'n')) {
// TODO(edisonn): report/warning
return current;
@ -179,7 +179,7 @@ long SkNativeParsedPDF::readTrailer(unsigned char* trailerStart, unsigned char*
unsigned char* current = ignoreLine(trailerStart, trailerEnd); // TODO(edisonn): verify next keyord is "trailer" use nextObject here
SkPdfObject token;
current = nextObject(current, trailerEnd, &token, fAllocator);
current = nextObject(current, trailerEnd, &token, fAllocator, NULL);
if (!token.isDictionary()) {
return -1;
}
@ -214,7 +214,7 @@ void SkNativeParsedPDF::addCrossSectionInfo(int id, int generation, int offset,
fObjects[id].fObj = NULL;
}
SkPdfObject* SkNativeParsedPDF::readObject(int id/*, int expectedGeneration*/) const {
SkPdfObject* SkNativeParsedPDF::readObject(int id/*, int expectedGeneration*/) {
long startOffset = fObjects[id].fOffset;
//long endOffset = fObjects[id].fOffsetEnd;
// TODO(edisonn): use hinted endOffset
@ -225,26 +225,26 @@ SkPdfObject* SkNativeParsedPDF::readObject(int id/*, int expectedGeneration*/) c
unsigned char* current = fFileContent + startOffset;
unsigned char* end = fFileContent + fContentLength;
SkPdfNativeTokenizer tokenizer(current, end - current, fMapper, fAllocator);
SkPdfNativeTokenizer tokenizer(current, end - current, fMapper, fAllocator, this);
SkPdfObject idObj;
SkPdfObject generationObj;
SkPdfObject objKeyword;
SkPdfObject* dict = fAllocator->allocObject();
current = nextObject(current, end, &idObj, NULL);
current = nextObject(current, end, &idObj, NULL, NULL);
if (current >= end) {
// TODO(edisonn): report warning/error
return NULL;
}
current = nextObject(current, end, &generationObj, NULL);
current = nextObject(current, end, &generationObj, NULL, NULL);
if (current >= end) {
// TODO(edisonn): report warning/error
return NULL;
}
current = nextObject(current, end, &objKeyword, NULL);
current = nextObject(current, end, &objKeyword, NULL, NULL);
if (current >= end) {
// TODO(edisonn): report warning/error
return NULL;
@ -258,7 +258,7 @@ SkPdfObject* SkNativeParsedPDF::readObject(int id/*, int expectedGeneration*/) c
// TODO(edisonn): report warning/error
}
current = nextObject(current, end, dict, fAllocator);
current = nextObject(current, end, dict, fAllocator, this);
// TODO(edisonn): report warning/error - verify last token is endobj
@ -293,7 +293,7 @@ SkPdfResourceDictionary* SkNativeParsedPDF::pageResources(int page) {
}
// TODO(edisonn): Partial implemented. Move the logics directly in the code generator for inheritable and default value?
SkRect SkNativeParsedPDF::MediaBox(int page) const {
SkRect SkNativeParsedPDF::MediaBox(int page) {
SkPdfPageObjectDictionary* current = fPages[page];
while (!current->has_MediaBox() && current->has_Parent()) {
current = (SkPdfPageObjectDictionary*)current->Parent(this);
@ -305,7 +305,7 @@ SkRect SkNativeParsedPDF::MediaBox(int page) const {
}
// TODO(edisonn): stream or array ... ? for now only array
SkPdfNativeTokenizer* SkNativeParsedPDF::tokenizerOfPage(int page) const {
SkPdfNativeTokenizer* SkNativeParsedPDF::tokenizerOfPage(int page) {
if (fPages[page]->isContentsAStream(this)) {
return tokenizerOfStream(fPages[page]->getContentsAsStream(this));
} else {
@ -315,19 +315,19 @@ SkPdfNativeTokenizer* SkNativeParsedPDF::tokenizerOfPage(int page) const {
}
}
SkPdfNativeTokenizer* SkNativeParsedPDF::tokenizerOfStream(SkPdfObject* stream) const {
SkPdfNativeTokenizer* SkNativeParsedPDF::tokenizerOfStream(SkPdfObject* stream) {
if (stream == NULL) {
return NULL;
}
return new SkPdfNativeTokenizer(stream, fMapper, fAllocator);
return new SkPdfNativeTokenizer(stream, fMapper, fAllocator, this);
}
// TODO(edisonn): NYI
SkPdfNativeTokenizer* SkNativeParsedPDF::tokenizerOfBuffer(unsigned char* buffer, size_t len) const {
SkPdfNativeTokenizer* SkNativeParsedPDF::tokenizerOfBuffer(unsigned char* buffer, size_t len) {
// warning does not track two calls in the same buffer! the buffer is updated!
// make a clean copy if needed!
return new SkPdfNativeTokenizer(buffer, len, fMapper, fAllocator);
return new SkPdfNativeTokenizer(buffer, len, fMapper, fAllocator, this);
}
size_t SkNativeParsedPDF::objects() const {
@ -376,13 +376,9 @@ SkPdfAllocator* SkNativeParsedPDF::allocator() const {
return fAllocator;
}
SkPdfObject* SkNativeParsedPDF::resolveReference(SkPdfObject* ref) const {
return (SkPdfObject*)resolveReference((const SkPdfObject*)ref);
}
// TODO(edisonn): fix infinite loop if ref to itself!
// TODO(edisonn): perf, fix refs at load, and resolve will simply return fResolvedReference?
SkPdfObject* SkNativeParsedPDF::resolveReference(const SkPdfObject* ref) const {
SkPdfObject* SkNativeParsedPDF::resolveReference(const SkPdfObject* ref) {
if (ref && ref->isReference()) {
int id = ref->referenceId();
// TODO(edisonn): generation/updates not supported now

13
experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.h
View File

@ -42,11 +42,11 @@ public:
int pages() const;
SkPdfResourceDictionary* pageResources(int page);
SkRect MediaBox(int page) const;
SkPdfNativeTokenizer* tokenizerOfPage(int n) const;
SkRect MediaBox(int page);
SkPdfNativeTokenizer* tokenizerOfPage(int n);
SkPdfNativeTokenizer* tokenizerOfStream(SkPdfObject* stream) const;
SkPdfNativeTokenizer* tokenizerOfBuffer(unsigned char* buffer, size_t len) const;
SkPdfNativeTokenizer* tokenizerOfStream(SkPdfObject* stream);
SkPdfNativeTokenizer* tokenizerOfBuffer(unsigned char* buffer, size_t len);
size_t objects() const;
SkPdfObject* object(int i);
@ -61,8 +61,7 @@ public:
void drawPage(int page, SkCanvas* canvas);
SkPdfObject* resolveReference(SkPdfObject* ref) const;
SkPdfObject* resolveReference(const SkPdfObject* ref) const;
SkPdfObject* resolveReference(const SkPdfObject* ref);
private:
@ -77,7 +76,7 @@ private:
obj->fOffset = -1;
}
SkPdfObject* readObject(int id/*, int generation*/) const;
SkPdfObject* readObject(int id/*, int generation*/);
void fillPages(SkPdfPageTreeNodeDictionary* tree);

32
experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.cpp
View File

@ -40,7 +40,7 @@ static unsigned char* endOfPdfToken(unsigned char* start, unsigned char* end) {
}
// last elem has to be ]
static unsigned char* readArray(unsigned char* start, unsigned char* end, SkPdfObject* array, SkPdfAllocator* allocator) {
static unsigned char* readArray(unsigned char* start, unsigned char* end, SkPdfObject* array, SkPdfAllocator* allocator, SkNativeParsedPDF* doc) {
while (start < end) {
// skip white spaces
start = skipPdfWhiteSpaces(start, end);
@ -57,7 +57,7 @@ static unsigned char* readArray(unsigned char* start, unsigned char* end, SkPdfO
}
SkPdfObject* newObj = allocator->allocObject();
start = nextObject(start, end, newObj, allocator);
start = nextObject(start, end, newObj, allocator, doc);
// TODO(edisonn): perf/memory: put the variables on the stack, and flush them on the array only when
// we are sure they are not references!
if (newObj->isKeywordReference() && array->size() >= 2 && array->objAtAIndex(array->size() - 1)->isInteger() && array->objAtAIndex(array->size() - 2)->isInteger()) {
@ -443,7 +443,7 @@ and it could get worse, with multiple object like this
// right now implement the silly algorithm that assumes endstream is finishing the stream
static unsigned char* readStream(unsigned char* start, unsigned char* end, SkPdfObject* dict) {
static unsigned char* readStream(unsigned char* start, unsigned char* end, SkPdfObject* dict, SkNativeParsedPDF* doc) {
start = skipPdfWhiteSpaces(start, end);
if (!(start[0] == 's' && start[1] == 't' && start[2] == 'r' && start[3] == 'e' && start[4] == 'a' && start[5] == 'm')) {
// no stream. return.
@ -462,8 +462,8 @@ static unsigned char* readStream(unsigned char* start, unsigned char* end, SkPdf
int64_t length = -1;
// TODO(edisonn): very basic implementation
if (stream->has_Length() && stream->Length(NULL) > 0) {
length = stream->Length(NULL);
if (stream->has_Length() && stream->Length(doc) > 0) {
length = stream->Length(doc);
}
// TODO(edisonn): laod external streams
@ -504,7 +504,7 @@ static unsigned char* readStream(unsigned char* start, unsigned char* end, SkPdf
return start;
}
static unsigned char* readDictionary(unsigned char* start, unsigned char* end, SkPdfObject* dict, SkPdfAllocator* allocator) {
static unsigned char* readDictionary(unsigned char* start, unsigned char* end, SkPdfObject* dict, SkPdfAllocator* allocator, SkNativeParsedPDF* doc) {
SkPdfObject::makeEmptyDictionary(dict);
start = skipPdfWhiteSpaces(start, end);
@ -518,7 +518,7 @@ static unsigned char* readDictionary(unsigned char* start, unsigned char* end, S
if (start < end) {
SkPdfObject* value = allocator->allocObject();
start = nextObject(start, end, value, allocator);
start = nextObject(start, end, value, allocator, doc);
start = skipPdfWhiteSpaces(start, end);
@ -526,10 +526,10 @@ static unsigned char* readDictionary(unsigned char* start, unsigned char* end, S
// seems we have an indirect reference
if (isPdfDigit(*start)) {
SkPdfObject generation;
start = nextObject(start, end, &generation, allocator);
start = nextObject(start, end, &generation, allocator, doc);
SkPdfObject keywordR;
start = nextObject(start, end, &keywordR, allocator);
start = nextObject(start, end, &keywordR, allocator, doc);
if (value->isInteger() && generation.isInteger() && keywordR.isKeywordReference()) {
int64_t id = value->intValue();
@ -566,12 +566,12 @@ static unsigned char* readDictionary(unsigned char* start, unsigned char* end, S
// TODO(edisonn): read stream ... put dict and stream in a struct, and have a pointer to struct ...
// or alocate 2 objects, and if there is no stream, free it to be used by someone else? or just leave it ?
start = readStream(start, end, dict);
start = readStream(start, end, dict, doc);
return start;
}
unsigned char* nextObject(unsigned char* start, unsigned char* end, SkPdfObject* token, SkPdfAllocator* allocator) {
unsigned char* nextObject(unsigned char* start, unsigned char* end, SkPdfObject* token, SkPdfAllocator* allocator, SkNativeParsedPDF* doc) {
unsigned char* current;
// skip white spaces
@ -592,7 +592,7 @@ unsigned char* nextObject(unsigned char* start, unsigned char* end, SkPdfObject*
case kOpenedSquareBracket_PdfDelimiter:
*start = '\0';
SkPdfObject::makeEmptyArray(token);
return readArray(current, end, token, allocator);
return readArray(current, end, token, allocator, doc);
case kOpenedRoundBracket_PdfDelimiter:
*start = '\0';
@ -602,7 +602,7 @@ unsigned char* nextObject(unsigned char* start, unsigned char* end, SkPdfObject*
*start = '\0';
if (end > start + 1 && start[1] == kOpenedInequityBracket_PdfDelimiter) {
// TODO(edisonn): pass here the length somehow?
return readDictionary(start + 2, end, token, allocator); // skip <<
return readDictionary(start + 2, end, token, allocator, doc); // skip <<
} else {
return readHexString(start + 1, end, token); // skip <
}
@ -678,7 +678,7 @@ SkPdfObject* SkPdfAllocator::allocObject() {
}
// TODO(edisonn): perf: do no copy the buffers, but use them, and mark cache the result, so there is no need of a second pass
SkPdfNativeTokenizer::SkPdfNativeTokenizer(SkPdfObject* objWithStream, const SkPdfMapper* mapper, SkPdfAllocator* allocator) : fMapper(mapper), fAllocator(allocator), fUncompressedStream(NULL), fUncompressedStreamEnd(NULL), fEmpty(false), fHasPutBack(false) {
SkPdfNativeTokenizer::SkPdfNativeTokenizer(SkPdfObject* objWithStream, const SkPdfMapper* mapper, SkPdfAllocator* allocator, SkNativeParsedPDF* doc) : fDoc(doc), fMapper(mapper), fAllocator(allocator), fUncompressedStream(NULL), fUncompressedStreamEnd(NULL), fEmpty(false), fHasPutBack(false) {
unsigned char* buffer = NULL;
size_t len = 0;
objWithStream->GetFilteredStreamRef(&buffer, &len, fAllocator);
@ -692,7 +692,7 @@ SkPdfNativeTokenizer::SkPdfNativeTokenizer(SkPdfObject* objWithStream, const SkP
memcpy(fUncompressedStream, buffer, len);
}
SkPdfNativeTokenizer::SkPdfNativeTokenizer(unsigned char* buffer, int len, const SkPdfMapper* mapper, SkPdfAllocator* allocator) : fMapper(mapper), fAllocator(allocator), fEmpty(false), fHasPutBack(false) {
SkPdfNativeTokenizer::SkPdfNativeTokenizer(unsigned char* buffer, int len, const SkPdfMapper* mapper, SkPdfAllocator* allocator, SkNativeParsedPDF* doc) : fDoc(doc), fMapper(mapper), fAllocator(allocator), fEmpty(false), fHasPutBack(false) {
// TODO(edisonn): hack, find end of object
char* endobj = strstr((char*)buffer, "endobj");
if (endobj) {
@ -716,7 +716,7 @@ bool SkPdfNativeTokenizer::readTokenCore(PdfToken* token) {
}
SkPdfObject obj;
fUncompressedStream = nextObject(fUncompressedStream, fUncompressedStreamEnd, &obj, fAllocator);
fUncompressedStream = nextObject(fUncompressedStream, fUncompressedStreamEnd, &obj, fAllocator, fDoc);
// If it is a keyword, we will only get the pointer of the string
if (obj.type() == SkPdfObject::kKeyword_PdfObjectType) {

8
experimental/PdfViewer/pdfparser/native/SkPdfNativeTokenizer.h
View File

@ -102,7 +102,8 @@ public:
}
};
unsigned char* nextObject(unsigned char* start, unsigned char* end, SkPdfObject* token, SkPdfAllocator* allocator);
class SkNativeParsedPDF;
unsigned char* nextObject(unsigned char* start, unsigned char* end, SkPdfObject* token, SkPdfAllocator* allocator, SkNativeParsedPDF* doc);
enum SkPdfTokenType {
kKeyword_TokenType,
@ -120,8 +121,8 @@ struct PdfToken {
class SkPdfNativeTokenizer {
public:
SkPdfNativeTokenizer(SkPdfObject* objWithStream, const SkPdfMapper* mapper, SkPdfAllocator* allocator);
SkPdfNativeTokenizer(unsigned char* buffer, int len, const SkPdfMapper* mapper, SkPdfAllocator* allocator);
SkPdfNativeTokenizer(SkPdfObject* objWithStream, const SkPdfMapper* mapper, SkPdfAllocator* allocator, SkNativeParsedPDF* doc);
SkPdfNativeTokenizer(unsigned char* buffer, int len, const SkPdfMapper* mapper, SkPdfAllocator* allocator, SkNativeParsedPDF* doc);
virtual ~SkPdfNativeTokenizer();
@ -130,6 +131,7 @@ public:
void PutBack(PdfToken token);
private:
SkNativeParsedPDF* fDoc;
const SkPdfMapper* fMapper;
SkPdfAllocator* fAllocator;