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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.
*/
#include "sfntly/data/memory_byte_array.h"
#include <string.h>
namespace sfntly {
MemoryByteArray::MemoryByteArray(int32_t length)
: ByteArray(0, length), b_(NULL), allocated_(true) {
}
MemoryByteArray::MemoryByteArray(byte_t* b, int32_t filled_length)
: ByteArray(filled_length, filled_length), b_(b), allocated_(false) {
assert(b);
}
MemoryByteArray::~MemoryByteArray() {
Close();
}
int32_t MemoryByteArray::CopyTo(OutputStream* os,
int32_t offset,
int32_t length) {
assert(os);
os->Write(b_, offset, length);
return length;
}
void MemoryByteArray::Init() {
if (allocated_ && b_ == NULL) {
b_ = new byte_t[Size()];
memset(b_, 0, Size());
}
}
void MemoryByteArray::InternalPut(int32_t index, byte_t b) {
Init();
b_[index] = b;
}
int32_t MemoryByteArray::InternalPut(int32_t index,
byte_t* b,
int32_t offset,
int32_t length) {
assert(b);
Init();
memcpy(b_ + index, b + offset, length);
return length;
}
byte_t MemoryByteArray::InternalGet(int32_t index) {
Init();
return b_[index];
}
int32_t MemoryByteArray::InternalGet(int32_t index,
byte_t* b,
int32_t offset,
int32_t length) {
assert(b);
Init();
memcpy(b + offset, b_ + index, length);
return length;
}
void MemoryByteArray::Close() {
if (allocated_ && b_) {
delete[] b_;
}
b_ = NULL;
}
byte_t* MemoryByteArray::Begin() {
Init();
return b_;
}
} // namespace sfntly
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