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// --------------------------------------------------------------------------
//
// File
// Name: IOStreamGetLine.h
// Purpose: Line based file descriptor reading
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
#ifndef IOSTREAMGETLINE__H
#define IOSTREAMGETLINE__H
#include <string>
#include "IOStream.h"
#ifdef NDEBUG
#define IOSTREAMGETLINE_BUFFER_SIZE 1024
#else
#define IOSTREAMGETLINE_BUFFER_SIZE 4
#endif
// Just a very large upper bound for line size to avoid
// people sending lots of data over sockets and causing memory problems.
#define IOSTREAMGETLINE_MAX_LINE_SIZE (1024*256)
// --------------------------------------------------------------------------
//
// Class
// Name: IOStreamGetLine
// Purpose: Line based stream reading
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
class IOStreamGetLine
{
public:
IOStreamGetLine(IOStream &Stream);
~IOStreamGetLine();
private:
IOStreamGetLine(const IOStreamGetLine &rToCopy);
public:
bool GetLine(std::string &rOutput, bool Preprocess = false, int Timeout = IOStream::TimeOutInfinite);
bool IsEOF() {return mEOF;}
int GetLineNumber() {return mLineNumber;}
// Call to detach, setting file pointer correctly to last bit read.
// Only works for lseek-able file descriptors.
void DetachFile();
// For doing interesting stuff with the remaining data...
// Be careful with this!
const void *GetBufferedData() const {return mBuffer + mBufferBegin;}
int GetSizeOfBufferedData() const {return mBytesInBuffer - mBufferBegin;}
void IgnoreBufferedData(int BytesToIgnore);
IOStream &GetUnderlyingStream() {return mrStream;}
private:
char mBuffer[IOSTREAMGETLINE_BUFFER_SIZE];
IOStream &mrStream;
int mLineNumber;
int mBufferBegin;
int mBytesInBuffer;
bool mPendingEOF;
bool mEOF;
std::string mPendingString;
};
#endif // IOSTREAMGETLINE__H
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