// 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_FILESTREAM_H_
#define RAPIDJSON_FILESTREAM_H_

#include "rapidjson.h"
#include <cstdio>

namespace rapidjson {

//! (Depreciated) Wrapper of C file stream for input or output.
/*!
    This simple wrapper does not check the validity of the stream.
    \note implements Stream concept
    \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.
*/
	class FileStream {
	public:
		typedef char Ch;    //!< Character type. Only support char.

		FileStream(FILE *fp) : fp_(fp), current_('\0'), count_(0) { Read(); }

		char Peek() const { return current_; }

		char Take() {
			char c = current_;
			Read();
			return c;
		}

		size_t Tell() const { return count_; }

		void Put(char c) { fputc(c, fp_); }

		void Flush() { fflush(fp_); }

		// Not implemented
		char *PutBegin() { return 0; }

		size_t PutEnd(char *) { return 0; }

	private:
		// Prohibit copy constructor & assignment operator.
		FileStream(const FileStream &);

		FileStream &operator=(const FileStream &);

		void Read() {
			RAPIDJSON_ASSERT(fp_ != 0);
			int c = fgetc(fp_);
			if (c != EOF) {
				current_ = (char) c;
				count_++;
			} else if (current_ != '\0')
				current_ = '\0';
		}

		FILE *fp_;
		char current_;
		size_t count_;
	};

} // namespace rapidjson

#endif // RAPIDJSON_FILESTREAM_H_
