68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
// Tencent is pleased to support the open source community by making RapidJSON available.
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//
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// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
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//
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// Licensed under the MIT License (the "License"); you may not use this file except
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// in compliance with the License. You may obtain a copy of the License at
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//
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// http://opensource.org/licenses/MIT
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//
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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#ifndef RAPIDJSON_FILESTREAM_H_
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#define RAPIDJSON_FILESTREAM_H_
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#include "rapidjson.h"
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#include <cstdio>
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RAPIDJSON_NAMESPACE_BEGIN
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//! (Deprecated) Wrapper of C file stream for input or output.
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/*!
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This simple wrapper does not check the validity of the stream.
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\note implements Stream concept
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\note deprecated: This was only for basic testing in version 0.1, it is found that the performance is very low by using fgetc(). Use FileReadStream instead.
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*/
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class FileStream {
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public:
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typedef char Ch; //!< Character type. Only support char.
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FileStream(std::FILE* fp) : fp_(fp), current_('\0'), count_(0) { Read(); }
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char Peek() const { return current_; }
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char Take() { char c = current_; Read(); return c; }
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size_t Tell() const { return count_; }
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void Put(char c) { fputc(c, fp_); }
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void Flush() { fflush(fp_); }
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// Not implemented
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char* PutBegin() { return 0; }
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size_t PutEnd(char*) { return 0; }
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private:
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// Prohibit copy constructor & assignment operator.
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FileStream(const FileStream&);
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FileStream& operator=(const FileStream&);
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void Read() {
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RAPIDJSON_ASSERT(fp_ != 0);
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int c = fgetc(fp_);
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if (c != EOF) {
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current_ = (char)c;
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count_++;
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}
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else if (current_ != '\0')
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current_ = '\0';
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}
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std::FILE* fp_;
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char current_;
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size_t count_;
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};
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RAPIDJSON_NAMESPACE_END
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#endif // RAPIDJSON_FILESTREAM_H_
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