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author | 2013-07-10 17:09:50 +0000 | |
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committer | 2013-07-10 17:09:50 +0000 | |
commit | 571c70b95f56e22b5a7d6f4f288aa6c9a925a64f (patch) | |
tree | e0d3377d7e373350706d46722af8fe050abda9d3 /experimental/PdfViewer/pdfparser/native/SkPdfObject.h | |
parent | 89fa4b9ee6bc6039781acbdb6c097a41f894ea1c (diff) |
Native PDF parser implementation - don't try it on pdfs that are not generated by skia, Crome Print Preview or Chrome Save As Pdf - it will crash as mising xref, pdfs with updates, and other features are not supported yer.
Review URL: https://codereview.chromium.org/18323019
git-svn-id: http://skia.googlecode.com/svn/trunk@9962 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'experimental/PdfViewer/pdfparser/native/SkPdfObject.h')
-rw-r--r-- | experimental/PdfViewer/pdfparser/native/SkPdfObject.h | 866 |
1 files changed, 866 insertions, 0 deletions
diff --git a/experimental/PdfViewer/pdfparser/native/SkPdfObject.h b/experimental/PdfViewer/pdfparser/native/SkPdfObject.h new file mode 100644 index 0000000000..86963b0398 --- /dev/null +++ b/experimental/PdfViewer/pdfparser/native/SkPdfObject.h @@ -0,0 +1,866 @@ +#ifndef EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKPDFOBJECT_H_ +#define EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKPDFOBJECT_H_ + +#include <stdint.h> +#include <string.h> +#include <string> +#include "SkTDArray.h" +#include "SkTDict.h" +#include "SkRect.h" +#include "SkMatrix.h" +#include "SkString.h" + +#include "SkPdfNYI.h" +#include "SkPdfConfig.h" + +class SkPdfDictionary; +class SkPdfStream; +class SkPdfAllocator; + +// TODO(edisonn): macro it and move it to utils +SkMatrix SkMatrixFromPdfMatrix(double array[6]); + + +#define kFilteredStreamBit 0 +#define kUnfilteredStreamBit 1 + + +class SkPdfObject { + public: + enum ObjectType { + kInvalid_PdfObjectType, + + kBoolean_PdfObjectType, + kInteger_PdfObjectType, + kReal_PdfObjectType, + kString_PdfObjectType, + kHexString_PdfObjectType, + kName_PdfObjectType, + kKeyword_PdfObjectType, + //kStream_PdfObjectType, // attached to a Dictionary + kArray_PdfObjectType, + kDictionary_PdfObjectType, + kNull_PdfObjectType, + + // TODO(edisonn): after the pdf has been loaded completely, resolve all references + // try the same thing with delayed loaded ... + kReference_PdfObjectType, + + kUndefined_PdfObjectType, // per 1.4 spec, if the same key appear twice in the dictionary, the value is undefined + }; + +private: + struct NotOwnedString { + unsigned char* fBuffer; + size_t fBytes; + }; + + struct Reference { + unsigned int fId; + unsigned int fGen; + }; + + // TODO(edisonn): add stream start, stream end, where stream is weither the file + // or decoded/filtered pdf stream + + // TODO(edisonn): add warning/report per object + // TODO(edisonn): add flag fUsed, to be used once the parsing is complete, + // so we could show what parts have been proccessed, ignored, or generated errors + + ObjectType fObjectType; + + union { + bool fBooleanValue; + int64_t fIntegerValue; + // TODO(edisonn): double, float? typedefed + double fRealValue; + NotOwnedString fStr; + + // TODO(edisonn): make sure the foorprint of fArray and fMap is small, otherwise, use pointers, or classes with up to 8 bytes in footprint + SkTDArray<SkPdfObject*>* fArray; + Reference fRef; + }; + SkTDict<SkPdfObject*>* fMap; + void* fData; + + +public: + + SkPdfObject() : fObjectType(kInvalid_PdfObjectType), fData(NULL) {} + + inline void* data() { + return fData; + } + + inline void setData(void* data) { + fData = data; + } + + ~SkPdfObject() { + reset(); + } + + void reset() { + switch (fObjectType) { + case kArray_PdfObjectType: + delete fArray; + break; + + case kDictionary_PdfObjectType: + delete fMap; + break; + + default: + break; + } + fObjectType = kInvalid_PdfObjectType; + } + + ObjectType type() { return fObjectType; } + + const char* c_str() const { + switch (fObjectType) { + case kString_PdfObjectType: + case kHexString_PdfObjectType: + case kKeyword_PdfObjectType: + return (const char*)fStr.fBuffer; + + default: + // TODO(edisonn): report/warning + return NULL; + } + } + + size_t len() const { + switch (fObjectType) { + case kString_PdfObjectType: + case kHexString_PdfObjectType: + case kKeyword_PdfObjectType: + return fStr.fBytes; + + default: + // TODO(edisonn): report/warning + return 0; + } + } + + + // TODO(edisonn): NYI + SkPdfDate& dateValue() const { + static SkPdfDate nyi; + return nyi; + } + + // TODO(edisonn): NYI + SkPdfFunction& functionValue() const { + static SkPdfFunction nyi; + return nyi; + } + + // TODO(edisonn): NYI + SkPdfFileSpec& fileSpecValue() const { + static SkPdfFileSpec nyi; + return nyi; + } + + // TODO(edisonn): NYI + SkPdfTree& treeValue() const { + static SkPdfTree nyi; + return nyi; + } + + + static void makeBoolean(bool value, SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = kBoolean_PdfObjectType; + obj->fBooleanValue = value; + } + + static SkPdfObject makeBoolean(bool value) { + SkPdfObject obj; + obj.fObjectType = kBoolean_PdfObjectType; + obj.fBooleanValue = value; + return obj; + } + + static void makeInteger(int64_t value, SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = kInteger_PdfObjectType; + obj->fIntegerValue = value; + } + + static void makeReal(double value, SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = kReal_PdfObjectType; + obj->fRealValue = value; + } + + static void makeNull(SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = kNull_PdfObjectType; + } + + static SkPdfObject makeNull() { + SkPdfObject obj; + obj.fObjectType = kNull_PdfObjectType; + return obj; + } + + static SkPdfObject kNull; + + static void makeNumeric(unsigned char* start, unsigned char* end, SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + // TODO(edisonn): NYI properly + // if has dot (impl), or exceeds max int, is real, otherwise is int + bool isInt = true; + for (unsigned char* current = start; current < end; current++) { + if (*current == '.') { + isInt = false; + break; + } + // TODO(edisonn): report parse issue with numbers like "24asdasd123" + } + if (isInt) { + makeInteger(atol((const char*)start), obj); + } else { + makeReal(atof((const char*)start), obj); + } + } + + static void makeReference(unsigned int id, unsigned int gen, SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = kReference_PdfObjectType; + obj->fRef.fId = id; + obj->fRef.fGen = gen; + } + + + static void makeString(unsigned char* start, SkPdfObject* obj) { + makeStringCore(start, strlen((const char*)start), obj, kString_PdfObjectType); + } + + static void makeString(unsigned char* start, unsigned char* end, SkPdfObject* obj) { + makeStringCore(start, end - start, obj, kString_PdfObjectType); + } + + static void makeString(unsigned char* start, size_t bytes, SkPdfObject* obj) { + makeStringCore(start, bytes, obj, kString_PdfObjectType); + } + + + static void makeHexString(unsigned char* start, SkPdfObject* obj) { + makeStringCore(start, strlen((const char*)start), obj, kHexString_PdfObjectType); + } + + static void makeHexString(unsigned char* start, unsigned char* end, SkPdfObject* obj) { + makeStringCore(start, end - start, obj, kHexString_PdfObjectType); + } + + static void makeHexString(unsigned char* start, size_t bytes, SkPdfObject* obj) { + makeStringCore(start, bytes, obj, kHexString_PdfObjectType); + } + + + static void makeName(unsigned char* start, SkPdfObject* obj) { + makeStringCore(start, strlen((const char*)start), obj, kName_PdfObjectType); + } + + static void makeName(unsigned char* start, unsigned char* end, SkPdfObject* obj) { + makeStringCore(start, end - start, obj, kName_PdfObjectType); + } + + static void makeName(unsigned char* start, size_t bytes, SkPdfObject* obj) { + makeStringCore(start, bytes, obj, kName_PdfObjectType); + } + + + static void makeKeyword(unsigned char* start, SkPdfObject* obj) { + makeStringCore(start, strlen((const char*)start), obj, kKeyword_PdfObjectType); + } + + static void makeKeyword(unsigned char* start, unsigned char* end, SkPdfObject* obj) { + makeStringCore(start, end - start, obj, kKeyword_PdfObjectType); + } + + static void makeKeyword(unsigned char* start, size_t bytes, SkPdfObject* obj) { + makeStringCore(start, bytes, obj, kKeyword_PdfObjectType); + } + + + + // TODO(edisonn): make the functions to return SkPdfArray, move these functions in SkPdfArray + static void makeEmptyArray(SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = kArray_PdfObjectType; + obj->fArray = new SkTDArray<SkPdfObject*>(); + // return (SkPdfArray*)obj; + } + + bool appendInArray(SkPdfObject* obj) { + SkASSERT(fObjectType == kArray_PdfObjectType); + if (fObjectType != kArray_PdfObjectType) { + // TODO(edisonn): report err + return false; + } + + fArray->push(obj); + return true; + } + + size_t size() const { + SkASSERT(fObjectType == kArray_PdfObjectType); + + return fArray->count(); + } + + SkPdfObject* objAtAIndex(int i) { + SkASSERT(fObjectType == kArray_PdfObjectType); + + return (*fArray)[i]; + } + + SkPdfObject* removeLastInArray() { + SkASSERT(fObjectType == kArray_PdfObjectType); + + SkPdfObject* ret = NULL; + fArray->pop(&ret); + + return ret; + } + + + const SkPdfObject* objAtAIndex(int i) const { + SkASSERT(fObjectType == kArray_PdfObjectType); + + return (*fArray)[i]; + } + + SkPdfObject* operator[](int i) { + SkASSERT(fObjectType == kArray_PdfObjectType); + + return (*fArray)[i]; + } + + const SkPdfObject* operator[](int i) const { + SkASSERT(fObjectType == kArray_PdfObjectType); + + return (*fArray)[i]; + } + + + // TODO(edisonn): make the functions to return SkPdfDictionary, move these functions in SkPdfDictionary + static void makeEmptyDictionary(SkPdfObject* obj) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = kDictionary_PdfObjectType; + obj->fMap = new SkTDict<SkPdfObject*>(1); + obj->fStr.fBuffer = NULL; + obj->fStr.fBytes = 0; + } + + // TODO(edisonn): get all the possible names from spec, and compute a hash function + // that would create no overlaps in the same dictionary + // or build a tree of chars that when followed goes to a unique id/index/hash + // TODO(edisonn): generate constants like kDictFoo, kNameDict_name + // which will be used in code + // add function SkPdfFastNameKey key(const char* key); + // TODO(edisonn): setting the same key twike, will make the value undefined! + bool set(SkPdfObject* key, SkPdfObject* value) { + SkASSERT(fObjectType == kDictionary_PdfObjectType); + SkASSERT(key->fObjectType == kName_PdfObjectType); + + if (key->fObjectType != kName_PdfObjectType || fObjectType != kDictionary_PdfObjectType) { + // TODO(edisonn): report err + return false; + } + + // we rewrite all delimiters and white spaces with '\0', so we expect the end of name to be '\0' + SkASSERT(key->fStr.fBuffer[key->fStr.fBytes] == '\0'); + + return set((char*)key->fStr.fBuffer, value); + } + + bool set(const char* key, SkPdfObject* value) { + SkASSERT(fObjectType == kDictionary_PdfObjectType); + + if (fObjectType != kDictionary_PdfObjectType) { + // TODO(edisonn): report err + return false; + } + + return fMap->set(key, value); + } + + SkPdfObject* get(SkPdfObject* key) { + SkASSERT(fObjectType == kDictionary_PdfObjectType); + SkASSERT(key->fObjectType == kName_PdfObjectType); + + if (key->fObjectType != kName_PdfObjectType || fObjectType != kDictionary_PdfObjectType) { + // TODO(edisonn): report err + return false; + } + + SkASSERT(key->fStr.fBuffer[key->fStr.fBytes] == '\0'); + + return get((char*)key->fStr.fBuffer); + } + + SkPdfObject* get(const char* key) { + SkASSERT(fObjectType == kDictionary_PdfObjectType); + SkASSERT(key); + if (fObjectType != kDictionary_PdfObjectType) { + // TODO(edisonn): report err + return NULL; + } + SkPdfObject* ret = NULL; + fMap->find(key, &ret); + return ret; + } + + const SkPdfObject* get(SkPdfObject* key) const { + SkASSERT(fObjectType == kDictionary_PdfObjectType); + SkASSERT(key->fObjectType == kName_PdfObjectType); + + if (key->fObjectType != kName_PdfObjectType || fObjectType != kDictionary_PdfObjectType) { + // TODO(edisonn): report err + return false; + } + + SkASSERT(key->fStr.fBuffer[key->fStr.fBytes] == '\0'); + + return get((char*)key->fStr.fBuffer); + } + + + const SkPdfObject* get(const char* key) const { + SkASSERT(fObjectType == kDictionary_PdfObjectType); + SkASSERT(key); + if (fObjectType != kDictionary_PdfObjectType) { + // TODO(edisonn): report err + return NULL; + } + SkPdfObject* ret = NULL; + fMap->find(key, &ret); + return ret; + } + + const SkPdfObject* get(const char* key, const char* abr) const { + const SkPdfObject* ret = get(key); + // TODO(edisonn): / is a valid name, and it might be an abreviation, so "" should not be like NULL + // make this distiontion in generator, and remove "" from condition + if (ret != NULL || abr == NULL || *abr == '\0') { + return ret; + } + return get(abr); + } + + SkPdfObject* get(const char* key, const char* abr) { + SkPdfObject* ret = get(key); + // TODO(edisonn): / is a valid name, and it might be an abreviation, so "" should not be like NULL + // make this distiontion in generator, and remove "" from condition + if (ret != NULL || abr == NULL || *abr == '\0') { + return ret; + } + return get(abr); + } + + SkPdfDictionary* asDictionary() { + SkASSERT(isDictionary()); + if (!isDictionary()) { + return NULL; + } + return (SkPdfDictionary*) this; + } + + const SkPdfDictionary* asDictionary() const { + SkASSERT(isDictionary()); + if (!isDictionary()) { + return NULL; + } + return (SkPdfDictionary*) this; + } + + + bool isReference() const { + return fObjectType == kReference_PdfObjectType; + } + + bool isBoolean() const { + return fObjectType == kBoolean_PdfObjectType; + } + + bool isInteger() const { + return fObjectType == kInteger_PdfObjectType; + } +private: + bool isReal() const { + return fObjectType == kReal_PdfObjectType; + } +public: + bool isNumber() const { + return fObjectType == kInteger_PdfObjectType || fObjectType == kReal_PdfObjectType; + } + + bool isKeywordReference() const { + return fObjectType == kKeyword_PdfObjectType && fStr.fBytes == 1 && fStr.fBuffer[0] == 'R'; + } + + bool isKeyword() const { + return fObjectType == kKeyword_PdfObjectType; + } + + bool isName() const { + return fObjectType == kName_PdfObjectType; + } + + bool isArray() const { + return fObjectType == kArray_PdfObjectType; + } + + bool isDate() const { + return fObjectType == kString_PdfObjectType || fObjectType == kHexString_PdfObjectType; + } + + bool isDictionary() const { + return fObjectType == kDictionary_PdfObjectType; + } + + bool isFunction() const { + return false; // NYI + } + + bool isRectangle() const { + return fObjectType == kArray_PdfObjectType && fArray->count() == 4; // NYI + and elems are numbers + } + + // TODO(edisonn): has stream .. or is stream ... TBD + bool hasStream() const { + return isDictionary() && fStr.fBuffer != NULL; + } + + // TODO(edisonn): has stream .. or is stream ... TBD + const SkPdfStream* getStream() const { + return hasStream() ? (const SkPdfStream*)this : NULL; + } + + SkPdfStream* getStream() { + return hasStream() ? (SkPdfStream*)this : NULL; + } + + bool isAnyString() const { + return fObjectType == kString_PdfObjectType || fObjectType == kHexString_PdfObjectType; + } + + bool isMatrix() const { + return fObjectType == kArray_PdfObjectType && fArray->count() == 6; // NYI + and elems are numbers + } + + inline int64_t intValue() const { + SkASSERT(fObjectType == kInteger_PdfObjectType); + + if (fObjectType != kInteger_PdfObjectType) { + // TODO(edisonn): log err + return 0; + } + return fIntegerValue; + } +private: + inline double realValue() const { + SkASSERT(fObjectType == kReal_PdfObjectType); + + if (fObjectType != kReal_PdfObjectType) { + // TODO(edisonn): log err + return 0; + } + return fRealValue; + } +public: + inline double numberValue() const { + SkASSERT(isNumber()); + + if (!isNumber()) { + // TODO(edisonn): log err + return 0; + } + return fObjectType == kReal_PdfObjectType ? fRealValue : fIntegerValue; + } + + int referenceId() const { + SkASSERT(fObjectType == kReference_PdfObjectType); + return fRef.fId; + } + + int referenceGeneration() const { + SkASSERT(fObjectType == kReference_PdfObjectType); + return fRef.fGen; + } + + inline const char* nameValue() const { + SkASSERT(fObjectType == kName_PdfObjectType); + + if (fObjectType != kName_PdfObjectType) { + // TODO(edisonn): log err + return ""; + } + return (const char*)fStr.fBuffer; + } + + inline const char* stringValue() const { + SkASSERT(fObjectType == kString_PdfObjectType || fObjectType == kHexString_PdfObjectType); + + if (fObjectType != kString_PdfObjectType && fObjectType != kHexString_PdfObjectType) { + // TODO(edisonn): log err + return ""; + } + return (const char*)fStr.fBuffer; + } + + // TODO(edisonn): nameValue2 and stringValue2 are used to make code generation easy, + // but it is not a performat way to do it, since it will create an extra copy + // remove these functions and make code generated faster + inline std::string nameValue2() const { + SkASSERT(fObjectType == kName_PdfObjectType); + + if (fObjectType != kName_PdfObjectType) { + // TODO(edisonn): log err + return ""; + } + return (const char*)fStr.fBuffer; + } + + inline std::string stringValue2() const { + SkASSERT(fObjectType == kString_PdfObjectType || fObjectType == kHexString_PdfObjectType); + + if (fObjectType != kString_PdfObjectType && fObjectType != kHexString_PdfObjectType) { + // TODO(edisonn): log err + return ""; + } + return (const char*)fStr.fBuffer; + } + + inline bool boolValue() const { + SkASSERT(fObjectType == kBoolean_PdfObjectType); + + if (fObjectType == kBoolean_PdfObjectType) { + // TODO(edisonn): log err + return false; + } + return fBooleanValue; + } + + SkRect rectangleValue() const { + SkASSERT(isRectangle()); + if (!isRectangle()) { + return SkRect::MakeEmpty(); + } + + double array[4]; + for (int i = 0; i < 4; i++) { + // TODO(edisonn): version where we could resolve references? + const SkPdfObject* elem = objAtAIndex(i); + if (elem == NULL || !elem->isNumber()) { + // TODO(edisonn): report error + return SkRect::MakeEmpty(); + } + array[i] = elem->numberValue(); + } + + return SkRect::MakeLTRB(SkDoubleToScalar(array[0]), + SkDoubleToScalar(array[1]), + SkDoubleToScalar(array[2]), + SkDoubleToScalar(array[3])); + } + + SkMatrix matrixValue() const { + SkASSERT(isMatrix()); + if (!isMatrix()) { + return SkMatrix::I(); + } + + double array[6]; + for (int i = 0; i < 6; i++) { + // TODO(edisonn): version where we could resolve references? + const SkPdfObject* elem = objAtAIndex(i); + if (elem == NULL || !elem->isNumber()) { + // TODO(edisonn): report error + return SkMatrix::I(); + } + array[i] = elem->numberValue(); + } + + return SkMatrixFromPdfMatrix(array); + } + + bool filterStream(SkPdfAllocator* allocator); + + + bool GetFilteredStreamRef(unsigned char** buffer, size_t* len, SkPdfAllocator* allocator) { + // TODO(edisonn): add params that couls let the last filter in place if it is jpeg or png to fast load images + if (!hasStream()) { + return false; + } + + filterStream(allocator); + + if (buffer) { + *buffer = fStr.fBuffer; + } + + if (len) { + *len = fStr.fBytes >> 1; // last bit + } + + return true; + } + + bool isStreamFiltered() const { + return hasStream() && ((fStr.fBytes & 1) == kFilteredStreamBit); + } + + bool GetUnfilteredStreamRef(unsigned char** buffer, size_t* len) const { + if (isStreamFiltered()) { + return false; + } + + if (!hasStream()) { + return false; + } + + if (buffer) { + *buffer = fStr.fBuffer; + } + + if (len) { + *len = fStr.fBytes >> 1; // remove slast bit + } + + return true; + } + + bool addStream(unsigned char* buffer, size_t len) { + SkASSERT(!hasStream()); + SkASSERT(isDictionary()); + + if (!isDictionary() || hasStream()) { + return false; + } + + fStr.fBuffer = buffer; + fStr.fBytes = (len << 2) + kUnfilteredStreamBit; + + return true; + } + + SkString toString() { + SkString str; + switch (fObjectType) { + case kInvalid_PdfObjectType: + str.append("Invalid"); + break; + + case kBoolean_PdfObjectType: + str.appendf("Boolean: %s", fBooleanValue ? "true" : "false"); + break; + + case kInteger_PdfObjectType: + str.appendf("Integer: %i", (int)fIntegerValue); + break; + + case kReal_PdfObjectType: + str.appendf("Real: %f", fRealValue); + break; + + case kString_PdfObjectType: + str.appendf("String, len() = %u: ", (unsigned int)fStr.fBytes); + str.append((const char*)fStr.fBuffer, fStr.fBytes); + break; + + case kHexString_PdfObjectType: + str.appendf("HexString, len() = %u: ", (unsigned int)fStr.fBytes); + str.append((const char*)fStr.fBuffer, fStr.fBytes); + break; + + case kName_PdfObjectType: + str.appendf("Name, len() = %u: ", (unsigned int)fStr.fBytes); + str.append((const char*)fStr.fBuffer, fStr.fBytes); + break; + + case kKeyword_PdfObjectType: + str.appendf("Keyword, len() = %u: ", (unsigned int)fStr.fBytes); + str.append((const char*)fStr.fBuffer, fStr.fBytes); + break; + + case kArray_PdfObjectType: + str.append("Array, size() = %i [", size()); + for (unsigned int i = 0; i < size(); i++) { + str.append(objAtAIndex(i)->toString()); + } + str.append("]"); + break; + + case kDictionary_PdfObjectType: + // TODO(edisonn): NYI + str.append("Dictionary: NYI"); + if (hasStream()) { + str.append(" HAS_STREAM"); + } + break; + + case kNull_PdfObjectType: + str = "NULL"; + break; + + case kReference_PdfObjectType: + str.appendf("Reference: %i %i", fRef.fId, fRef.fGen); + break; + + case kUndefined_PdfObjectType: + str = "Undefined"; + break; + + default: + str = "Internal Error Object Type"; + break; + } + + return str; + } + +private: + static void makeStringCore(unsigned char* start, SkPdfObject* obj, ObjectType type) { + makeStringCore(start, strlen((const char*)start), obj, type); + } + + static void makeStringCore(unsigned char* start, unsigned char* end, SkPdfObject* obj, ObjectType type) { + makeStringCore(start, end - start, obj, type); + } + + static void makeStringCore(unsigned char* start, size_t bytes, SkPdfObject* obj, ObjectType type) { + SkASSERT(obj->fObjectType == kInvalid_PdfObjectType); + + obj->fObjectType = type; + obj->fStr.fBuffer = start; + obj->fStr.fBytes = bytes; + } + + bool applyFilter(const char* name, SkPdfAllocator* allocator); + bool applyFlateDecodeFilter(SkPdfAllocator* allocator); + bool applyDCTDecodeFilter(SkPdfAllocator* allocator); +}; + +class SkPdfStream : public SkPdfObject {}; +class SkPdfArray : public SkPdfObject {}; +class SkPdfString : public SkPdfObject {}; +class SkPdfHexString : public SkPdfObject {}; +class SkPdfInteger : public SkPdfObject {}; +class SkPdfReal : public SkPdfObject {}; +class SkPdfNumber : public SkPdfObject {}; + +#endif // EXPERIMENTAL_PDFVIEWER_PDFPARSER_NATIVE_SKPDFOBJECT_H_ |