1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkValidatingReadBuffer_DEFINED 9 #define SkValidatingReadBuffer_DEFINED 10 11 #include "SkRefCnt.h" 12 #include "SkReadBuffer.h" 13 #include "SkWriteBuffer.h" 14 #include "SkPath.h" 15 #include "SkPicture.h" 16 #include "SkReader32.h" 17 18 class SkBitmap; 19 20 class SkValidatingReadBuffer : public SkReadBuffer { 21 public: 22 SkValidatingReadBuffer(const void* data, size_t size); 23 ~SkValidatingReadBuffer() override; 24 25 SkReadBuffer* clone(const void* data, size_t size) const override { 26 return new SkValidatingReadBuffer(data, size); 27 } 28 29 const void* skip(size_t size) override; 30 31 // primitives 32 bool readBool() override; 33 SkColor readColor() override; 34 int32_t readInt() override; 35 SkScalar readScalar() override; 36 uint32_t readUInt() override; 37 int32_t read32() override; 38 39 // peek 40 uint8_t peekByte() override; 41 42 // strings -- the caller is responsible for freeing the string contents 43 void readString(SkString* string) override; 44 45 // common data structures 46 SkFlattenable* readFlattenable(SkFlattenable::Type type) override; 47 void readColor4f(SkColor4f* color) override; 48 void readPoint(SkPoint* point) override; 49 void readMatrix(SkMatrix* matrix) override; 50 void readIRect(SkIRect* rect) override; 51 void readRect(SkRect* rect) override; 52 void readRRect(SkRRect* rrect) override; 53 void readRegion(SkRegion* region) override; 54 void readPath(SkPath* path) override; 55 56 // binary data and arrays 57 bool readByteArray(void* value, size_t size) override; 58 bool readColorArray(SkColor* colors, size_t size) override; 59 bool readColor4fArray(SkColor4f* colors, size_t size) override; 60 bool readIntArray(int32_t* values, size_t size) override; 61 bool readPointArray(SkPoint* points, size_t size) override; 62 bool readScalarArray(SkScalar* values, size_t size) override; 63 64 // helpers to get info about arrays and binary data 65 uint32_t getArrayCount() override; 66 67 bool validate(bool isValid) override; 68 bool isValid() const override; 69 70 bool validateAvailable(size_t size) override; 71 72 private: 73 bool readArray(void* value, size_t size, size_t elementSize); 74 75 void setMemory(const void* data, size_t size); 76 77 static bool IsPtrAlign4(const void* ptr) { 78 return SkIsAlign4((uintptr_t)ptr); 79 } 80 81 bool fError; 82 83 typedef SkReadBuffer INHERITED; 84 }; 85 86 #endif // SkValidatingReadBuffer_DEFINED 87
