mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-08-15 01:03:23 +00:00
67 lines
2.8 KiB
C++
67 lines
2.8 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_MEMORYSTREAM_H_
|
|
#define RAPIDJSON_MEMORYSTREAM_H_
|
|
|
|
#include "rapidjson.h"
|
|
|
|
namespace rapidjson {
|
|
|
|
//! Represents an in-memory input byte stream.
|
|
/*!
|
|
This class is mainly for being wrapped by EncodedInputStream or AutoUTFInputStream.
|
|
|
|
It is similar to FileReadBuffer but the source is an in-memory buffer instead of a file.
|
|
|
|
Differences between MemoryStream and StringStream:
|
|
1. StringStream has encoding but MemoryStream is a byte stream.
|
|
2. MemoryStream needs size of the source buffer and the buffer don't need to be null terminated. StringStream assume null-terminated string as source.
|
|
3. MemoryStream supports Peek4() for encoding detection. StringStream is specified with an encoding so it should not have Peek4().
|
|
\note implements Stream concept
|
|
*/
|
|
struct MemoryStream {
|
|
typedef char Ch; // byte
|
|
|
|
MemoryStream(const Ch *src, size_t size) : src_(src), begin_(src), end_(src + size), size_(size) {}
|
|
|
|
Ch Peek() const { return *src_; }
|
|
Ch Take() { return (src_ == end_) ? '\0' : *src_++; }
|
|
size_t Tell() const { return static_cast<size_t>(src_ - begin_); }
|
|
|
|
Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
|
|
void Put(Ch) { RAPIDJSON_ASSERT(false); }
|
|
void Flush() { RAPIDJSON_ASSERT(false); }
|
|
size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }
|
|
|
|
// For encoding detection only.
|
|
const Ch* Peek4() const {
|
|
return Tell() + 4 <= size_ ? src_ : 0;
|
|
}
|
|
|
|
const Ch* src_; //!< Current read position.
|
|
const Ch* begin_; //!< Original head of the string.
|
|
const Ch* end_; //!< End of stream.
|
|
size_t size_; //!< Size of the stream.
|
|
};
|
|
|
|
} // namespace rapidjson
|
|
|
|
#endif // RAPIDJSON_MEMORYBUFFER_H_
|