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/*
* Copyright 2011 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef TYPOGRAPHY_FONT_SFNTLY_SRC_SFNTLY_DATA_MEMORY_BYTE_ARRAY_H_
#define TYPOGRAPHY_FONT_SFNTLY_SRC_SFNTLY_DATA_MEMORY_BYTE_ARRAY_H_
#include "sfntly/data/byte_array.h"
namespace sfntly {
class MemoryByteArray : public ByteArray, public RefCounted<MemoryByteArray> {
public:
// Construct a new MemoryByteArray with a new array of the size given. It is
// assumed that none of the array is filled and readable.
explicit MemoryByteArray(int32_t length);
// Note: not implemented due to dangerous operations in constructor.
//explicit MemoryByteArray(ByteVector* b);
// Construct a new MemoryByteArray using byte array.
// @param b the byte array that provides the actual storage
// @param filled_length the index of the last byte in the array has data
// Note: This is different from Java version, it does not take over the
// ownership of b. Caller is responsible for handling the lifetime
// of b. C++ port also assumes filled_length is buffer_length since
// there is not a reliable way to identify the actual size of buffer.
MemoryByteArray(byte_t* b, int32_t filled_length);
virtual ~MemoryByteArray();
virtual int32_t CopyTo(OutputStream* os, int32_t offset, int32_t length);
// Make gcc -Woverloaded-virtual happy.
virtual int32_t CopyTo(ByteArray* array) { return ByteArray::CopyTo(array); }
virtual int32_t CopyTo(ByteArray* array, int32_t offset, int32_t length) {
return ByteArray::CopyTo(array, offset, length);
}
virtual int32_t CopyTo(int32_t dst_offset,
ByteArray* array,
int32_t src_offset,
int32_t length) {
return ByteArray::CopyTo(dst_offset, array, src_offset, length);
}
virtual int32_t CopyTo(OutputStream* os) { return ByteArray::CopyTo(os); }
protected:
virtual void InternalPut(int32_t index, byte_t b);
virtual int32_t InternalPut(int32_t index,
byte_t* b,
int32_t offset,
int32_t length);
virtual byte_t InternalGet(int32_t index);
virtual int32_t InternalGet(int32_t index,
byte_t* b,
int32_t offset,
int32_t length);
virtual void Close();
virtual byte_t* Begin();
private:
void Init(); // C++ port only, used to allocate memory outside constructor.
byte_t* b_;
bool allocated_;
};
} // namespace sfntly
#endif // TYPOGRAPHY_FONT_SFNTLY_SRC_SFNTLY_DATA_MEMORY_BYTE_ARRAY_H_
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