mirror of https://github.com/facebook/rocksdb.git
47 lines
923 B
C++
47 lines
923 B
C++
#ifndef RAPIDJSON_FILESTREAM_H_
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#define RAPIDJSON_FILESTREAM_H_
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#include <cstdio>
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namespace rapidjson {
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//! 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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\implements Stream
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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(FILE* fp) : fp_(fp), 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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// 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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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
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current_ = '\0';
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}
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FILE* fp_;
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char current_;
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size_t count_;
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};
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} // namespace rapidjson
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#endif // RAPIDJSON_FILESTREAM_H_
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