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67 lines
1.4 KiB
C++
67 lines
1.4 KiB
C++
/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
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/* If you are missing that file, acquire a complete release at teeworlds.com. */
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#include "linereader.h"
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void CLineReader::Init(IOHANDLE io)
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{
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m_BufferMaxSize = 4*1024;
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m_BufferSize = 0;
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m_BufferPos = 0;
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m_IO = io;
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}
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char *CLineReader::Get()
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{
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unsigned LineStart = m_BufferPos;
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while(1)
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{
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if(m_BufferPos >= m_BufferSize)
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{
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// fetch more
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// move the remaining part to the front
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unsigned Read;
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unsigned Left = m_BufferSize - LineStart;
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if(LineStart > m_BufferSize)
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Left = 0;
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if(Left)
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mem_move(m_aBuffer, &m_aBuffer[LineStart], Left);
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m_BufferPos = Left;
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// fill the buffer
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Read = io_read(m_IO, &m_aBuffer[m_BufferPos], m_BufferMaxSize-m_BufferPos);
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m_BufferSize = Left + Read;
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LineStart = 0;
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if(!Read)
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{
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if(Left)
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{
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m_aBuffer[Left] = 0; // return the last line
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m_BufferPos = Left;
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m_BufferSize = Left;
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return m_aBuffer;
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}
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else
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return 0x0; // we are done!
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}
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}
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else
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{
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if(m_aBuffer[m_BufferPos] == '\n' || m_aBuffer[m_BufferPos] == '\r')
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{
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// line found
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if(m_aBuffer[m_BufferPos] == '\r' && m_BufferPos+1 < m_BufferSize && m_aBuffer[m_BufferPos+1] == '\n')
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m_aBuffer[m_BufferPos++] = 0;
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m_aBuffer[m_BufferPos] = 0;
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m_BufferPos++;
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return &m_aBuffer[LineStart];
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}
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else
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m_BufferPos++;
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}
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}
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}
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