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