58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
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/*****************************************************************************
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*
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* buffer.cpp
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*
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* Lame buffering implementation.
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*
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*****************************************************************************/
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#include "sdview.h"
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BOOL IOBuffer::NextLine(String &str)
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{
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str.Reset();
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do {
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/*
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* Drain what we can from the current buffer.
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*/
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int i = 0;
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while (i < _cchBufUsed && _rgchBuf[i++] != TEXT('\n')) {
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/* Keep looking */
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}
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if (i) {
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/* _rgchBuf[i] is the first char not to append */
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str.Append(_rgchBuf, i);
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memcpy(_rgchBuf, _rgchBuf+i, _cchBufUsed - i);
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_cchBufUsed -= i;
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/* Stop if we copied a \n */
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if (str[str.Length()-1] == TEXT('\n')) {
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return TRUE;
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}
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}
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/*
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* Refill from the file until it's all gone.
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*/
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if (_hRead)
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{
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DWORD dwBytesRead;
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if (!ReadFile(_hRead, _rgchBuf, _cchBuf, &dwBytesRead, NULL)) {
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_hRead = NULL;
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}
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#ifdef UNICODE
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#error Need to convert from ANSI to UNICODE here
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#endif
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_cchBufUsed = dwBytesRead;
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}
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} while (_hRead);
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return FALSE;
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}
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