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-rw-r--r--engine/mem_fgets.cpp63
1 files changed, 63 insertions, 0 deletions
diff --git a/engine/mem_fgets.cpp b/engine/mem_fgets.cpp
new file mode 100644
index 0000000..13e6b7c
--- /dev/null
+++ b/engine/mem_fgets.cpp
@@ -0,0 +1,63 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose:
+//
+// $NoKeywords: $
+//=============================================================================//
+#include <stdio.h>
+#include <memory.h>
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+// Copied from sound.cpp in the DLL
+char *memfgets( unsigned char *pMemFile, int fileSize, int *pFilePos, char *pBuffer, int bufferSize )
+{
+ int filePos = *pFilePos;
+ int i, last, stop;
+
+ // Bullet-proofing
+ if ( !pMemFile || !pBuffer )
+ return NULL;
+
+ if ( filePos >= fileSize )
+ return NULL;
+
+ i = filePos;
+ last = fileSize;
+
+ // fgets always NULL terminates, so only read bufferSize-1 characters
+ if ( last - filePos > (bufferSize-1) )
+ last = filePos + (bufferSize-1);
+
+ stop = 0;
+
+ // Stop at the next newline (inclusive) or end of buffer
+ while ( i < last && !stop )
+ {
+ if ( pMemFile[i] == '\n' )
+ stop = 1;
+ i++;
+ }
+
+
+ // If we actually advanced the pointer, copy it over
+ if ( i != filePos )
+ {
+ // We read in size bytes
+ int size = i - filePos;
+ // copy it out
+ memcpy( pBuffer, pMemFile + filePos, sizeof(unsigned char)*size );
+
+ // If the buffer isn't full, terminate (this is always true)
+ if ( size < bufferSize )
+ pBuffer[size] = 0;
+
+ // Update file pointer
+ *pFilePos = i;
+ return pBuffer;
+ }
+
+ // No data read, bail
+ return NULL;
+} \ No newline at end of file