63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include <stdio.h>
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#include <memory.h>
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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// Copied from sound.cpp in the DLL
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char *memfgets( unsigned char *pMemFile, int fileSize, int *pFilePos, char *pBuffer, int bufferSize )
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{
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int filePos = *pFilePos;
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int i, last, stop;
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// Bullet-proofing
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if ( !pMemFile || !pBuffer )
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return NULL;
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if ( filePos >= fileSize )
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return NULL;
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i = filePos;
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last = fileSize;
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// fgets always NULL terminates, so only read bufferSize-1 characters
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if ( last - filePos > (bufferSize-1) )
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last = filePos + (bufferSize-1);
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stop = 0;
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// Stop at the next newline (inclusive) or end of buffer
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while ( i < last && !stop )
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{
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if ( pMemFile[i] == '\n' )
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stop = 1;
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i++;
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}
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// If we actually advanced the pointer, copy it over
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if ( i != filePos )
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{
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// We read in size bytes
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int size = i - filePos;
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// copy it out
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memcpy( pBuffer, pMemFile + filePos, sizeof(unsigned char)*size );
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// If the buffer isn't full, terminate (this is always true)
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if ( size < bufferSize )
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pBuffer[size] = 0;
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// Update file pointer
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*pFilePos = i;
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return pBuffer;
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}
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// No data read, bail
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return NULL;
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} |