80 lines
2.9 KiB
C++
80 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_STRINGBUFFER_H_
|
|
#define RAPIDJSON_STRINGBUFFER_H_
|
|
|
|
#include "rapidjson.h"
|
|
#include "internal/stack.h"
|
|
|
|
namespace rapidjson {
|
|
|
|
//! Represents an in-memory output stream.
|
|
/*!
|
|
\tparam Encoding Encoding of the stream.
|
|
\tparam Allocator type for allocating memory buffer.
|
|
\note implements Stream concept
|
|
*/
|
|
template <typename Encoding, typename Allocator = CrtAllocator>
|
|
struct GenericStringBuffer {
|
|
typedef typename Encoding::Ch Ch;
|
|
|
|
GenericStringBuffer(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() {
|
|
// Push and pop a null terminator. This is safe.
|
|
*stack_.template Push<Ch>() = '\0';
|
|
stack_.ShrinkToFit();
|
|
stack_.template Pop<Ch>(1);
|
|
}
|
|
Ch* Push(size_t count) { return stack_.template Push<Ch>(count); }
|
|
void Pop(size_t count) { stack_.template Pop<Ch>(count); }
|
|
|
|
const Ch* GetString() const {
|
|
// Push and pop a null terminator. This is safe.
|
|
*stack_.template Push<Ch>() = '\0';
|
|
stack_.template Pop<Ch>(1);
|
|
|
|
return stack_.template Bottom<Ch>();
|
|
}
|
|
|
|
size_t GetSize() const { return stack_.GetSize(); }
|
|
|
|
static const size_t kDefaultCapacity = 256;
|
|
mutable internal::Stack<Allocator> stack_;
|
|
};
|
|
|
|
//! String buffer with UTF8 encoding
|
|
typedef GenericStringBuffer<UTF8<> > StringBuffer;
|
|
|
|
//! Implement specialized version of PutN() with memset() for better performance.
|
|
template<>
|
|
inline void PutN(GenericStringBuffer<UTF8<> >& stream, char c, size_t n) {
|
|
std::memset(stream.stack_.Push<char>(n), c, n * sizeof(c));
|
|
}
|
|
|
|
} // namespace rapidjson
|
|
|
|
#endif // RAPIDJSON_STRINGBUFFER_H_
|