mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-08-15 01:03:23 +00:00
77 lines
2.9 KiB
C++
77 lines
2.9 KiB
C++
// Copyright (C) 2011 Milo Yip
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
#ifndef RAPIDJSON_MEMORYBUFFER_H_
|
|
#define RAPIDJSON_MEMORYBUFFER_H_
|
|
|
|
#include "rapidjson.h"
|
|
#include "internal/stack.h"
|
|
|
|
namespace rapidjson {
|
|
|
|
//! Represents an in-memory output byte stream.
|
|
/*!
|
|
This class is mainly for being wrapped by EncodedOutputStream or AutoUTFOutputStream.
|
|
|
|
It is similar to FileWriteBuffer but the destination is an in-memory buffer instead of a file.
|
|
|
|
Differences between MemoryBuffer and StringBuffer:
|
|
1. StringBuffer has Encoding but MemoryBuffer is only a byte buffer.
|
|
2. StringBuffer::GetString() returns a null-terminated string. MemoryBuffer::GetBuffer() returns a buffer without terminator.
|
|
|
|
\tparam Allocator type for allocating memory buffer.
|
|
\note implements Stream concept
|
|
*/
|
|
template <typename Allocator = CrtAllocator>
|
|
struct GenericMemoryBuffer {
|
|
typedef char Ch; // byte
|
|
|
|
GenericMemoryBuffer(Allocator* allocator = 0, size_t capacity = kDefaultCapacity) : stack_(allocator, capacity) {}
|
|
|
|
void Put(Ch c) { *stack_.template Push<Ch>() = c; }
|
|
void Flush() {}
|
|
|
|
void Clear() { stack_.Clear(); }
|
|
void ShrinkToFit() { stack_.ShrinkToFit(); }
|
|
Ch* Push(size_t count) { return stack_.template Push<Ch>(count); }
|
|
void Pop(size_t count) { stack_.template Pop<Ch>(count); }
|
|
|
|
const Ch* GetBuffer() const {
|
|
return stack_.template Bottom<Ch>();
|
|
}
|
|
|
|
size_t GetSize() const { return stack_.GetSize(); }
|
|
|
|
static const size_t kDefaultCapacity = 256;
|
|
mutable internal::Stack<Allocator> stack_;
|
|
};
|
|
|
|
typedef GenericMemoryBuffer<> MemoryBuffer;
|
|
|
|
//! Implement specialized version of PutN() with memset() for better performance.
|
|
template<>
|
|
inline void PutN(MemoryBuffer& memoryBuffer, char c, size_t n) {
|
|
std::memset(memoryBuffer.stack_.Push<char>(n), c, n * sizeof(c));
|
|
}
|
|
|
|
} // namespace rapidjson
|
|
|
|
#endif // RAPIDJSON_MEMORYBUFFER_H_
|