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// --------------------------------------------------------------------------
//
// File
// Name: IOStreamGetLine.cpp
// Purpose: Line based file descriptor reading
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
#include "Box.h"
#include "IOStreamGetLine.h"
#include "CommonException.h"
#include "MemLeakFindOn.h"
// --------------------------------------------------------------------------
//
// Function
// Name: IOStreamGetLine::IOStreamGetLine(int)
// Purpose: Constructor, taking file descriptor
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
IOStreamGetLine::IOStreamGetLine(IOStream &Stream)
: mrStream(Stream)
{
}
// --------------------------------------------------------------------------
//
// Function
// Name: IOStreamGetLine::~IOStreamGetLine()
// Purpose: Destructor
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
IOStreamGetLine::~IOStreamGetLine()
{
}
// --------------------------------------------------------------------------
//
// Function
// Name: IOStreamGetLine::GetLine(std::string &, bool, int)
// Purpose: Gets a line from the file, returning it in rOutput. If Preprocess is true, leading
// and trailing whitespace is removed, and comments (after #)
// are deleted.
// Returns true if a line is available now, false if retrying may get a line (eg timeout, signal),
// and exceptions if it's EOF.
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
bool IOStreamGetLine::GetLine(std::string &rOutput, bool Preprocess, int Timeout)
{
return GetLineInternal(rOutput, Preprocess, Timeout);
}
// --------------------------------------------------------------------------
//
// Function
// Name: IOStreamGetLine::ReadMore()
// Purpose: Read more bytes from the handle, possible the
// console, into mBuffer and return the number of
// bytes read, 0 on EOF or -1 on error.
// Created: 2011/04/22
//
// --------------------------------------------------------------------------
int IOStreamGetLine::ReadMore(int Timeout)
{
int bytes = mrStream.Read(mBuffer, sizeof(mBuffer), Timeout);
if(!mrStream.StreamDataLeft())
{
mPendingEOF = true;
}
return bytes;
}
// --------------------------------------------------------------------------
//
// Function
// Name: IOStreamGetLine::DetachFile()
// Purpose: Detaches the file handle, setting the file pointer correctly.
// Probably not good for sockets...
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
void IOStreamGetLine::DetachFile()
{
// Adjust file pointer
int bytesOver = mBytesInBuffer - mBufferBegin;
ASSERT(bytesOver >= 0);
if(bytesOver > 0)
{
mrStream.Seek(0 - bytesOver, IOStream::SeekType_Relative);
}
}
// --------------------------------------------------------------------------
//
// Function
// Name: IOStreamGetLine::IgnoreBufferedData(int)
// Purpose: Ignore buffered bytes (effectively removing them from the
// beginning of the buffered data.)
// Cannot remove more bytes than are currently in the buffer.
// Be careful when this is used!
// Created: 22/12/04
//
// --------------------------------------------------------------------------
void IOStreamGetLine::IgnoreBufferedData(int BytesToIgnore)
{
int bytesInBuffer = mBytesInBuffer - mBufferBegin;
if(BytesToIgnore < 0 || BytesToIgnore > bytesInBuffer)
{
THROW_EXCEPTION(CommonException, IOStreamGetLineNotEnoughDataToIgnore)
}
mBufferBegin += BytesToIgnore;
}
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