From f7a9549bd6ad83f2e0bceec9cddacfa5e3f84a54 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Mon, 1 May 2006 17:11:04 +0000
Subject: libbu++ is finally laid out the way it should be, trunk, branches,
 and tags.

---
 src/flexbuf.cpp | 206 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 206 insertions(+)
 create mode 100644 src/flexbuf.cpp

(limited to 'src/flexbuf.cpp')

diff --git a/src/flexbuf.cpp b/src/flexbuf.cpp
new file mode 100644
index 0000000..acd55a7
--- /dev/null
+++ b/src/flexbuf.cpp
@@ -0,0 +1,206 @@
+#include "flexbuf.h"
+#include <string.h>
+
+FlexBuf::FlexBuf()
+{
+	lpBuf = new char[1024];
+	nLastChar = 0;
+	nFirstChar = 0;
+	nSize = 1024;
+	nFill = 0;
+	clearData();
+}
+
+FlexBuf::~FlexBuf()
+{
+	delete[] lpBuf;
+}
+
+bool FlexBuf::appendData( const char *lpData, int nDSize )
+{
+	int nStrLen;
+	if( nDSize < 0 )
+	{
+		nStrLen = strlen( lpData );
+	}
+	else
+	{
+		nStrLen = nDSize;
+	}
+
+	if( nLastChar + nStrLen + 1 > nSize )
+	{
+		if( nFill + nStrLen + 1 < nSize )
+		{
+			memcpy( lpBuf, lpBuf+nFirstChar, nFill );
+			nLastChar -= nFirstChar;
+			nFirstChar = 0;
+		}
+		else
+		{
+			nSize += nStrLen+1;
+			char *lpNewBuf = new char[nSize];
+			memcpy( lpNewBuf, lpBuf+nFirstChar, nFill );
+			delete[] lpBuf;
+			lpBuf = lpNewBuf;
+			nLastChar -= nFirstChar;
+			nFirstChar = 0;
+		}
+	}
+
+	memcpy( &lpBuf[nLastChar], lpData, nStrLen );
+	nLastChar += nStrLen;
+	nFill += nStrLen;
+	lpBuf[nLastChar] = '\0';
+
+	return true;
+}
+
+bool FlexBuf::appendData( const char lData )
+{
+	if( nLastChar + 2 > nSize )
+	{
+		if( nFill+2 < nSize )
+		{
+			memcpy( lpBuf, lpBuf+nFirstChar, nFill );
+			nLastChar -= nFirstChar;
+			nFirstChar = 0;
+		}
+		else
+		{
+			nSize += 1024;
+			char *lpNewBuf = new char[nSize];
+			memcpy( lpNewBuf, lpBuf+nFirstChar, nFill );
+			delete[] lpBuf;
+			lpBuf = lpNewBuf;
+			nLastChar -= nFirstChar;
+			nFirstChar = 0;
+		}
+	}
+
+	lpBuf[nLastChar] = lData;
+	nLastChar++;
+	nFill++;
+	lpBuf[nLastChar] = '\0';
+
+	return true;
+}
+
+bool FlexBuf::appendData( const short lData )
+{
+	return appendData( (const char *)&lData, sizeof(short) );
+}
+
+bool FlexBuf::appendData( const int lData )
+{
+	return appendData( (const char *)&lData, sizeof(int) );
+}
+
+bool FlexBuf::appendData( const long lData )
+{
+	return appendData( (const char *)&lData, sizeof(long) );
+}
+
+bool FlexBuf::appendData( const float lData )
+{
+	return appendData( (const char *)&lData, sizeof(float) );
+}
+
+bool FlexBuf::appendData( const double lData )
+{
+	return appendData( (const char *)&lData, sizeof(double) );
+}
+
+bool FlexBuf::appendData( const unsigned char lData )
+{
+	return appendData( (const char)lData );
+}
+
+bool FlexBuf::appendData( const unsigned short lData )
+{
+	return appendData( (const char *)&lData, sizeof(short) );
+}
+
+bool FlexBuf::appendData( const unsigned long lData )
+{
+	return appendData( (const char *)&lData, sizeof(long) );
+}
+
+bool FlexBuf::appendData( const unsigned int lData )
+{
+	return appendData( (const char *)&lData, sizeof(int) );
+}
+
+bool FlexBuf::clearData()
+{
+	nFirstChar = nLastChar = nFill = 0;
+	lpBuf[nLastChar] = '\0';
+
+	return true;
+}
+
+const char *FlexBuf::getData()
+{
+	return (lpBuf+nFirstChar);
+}
+
+int FlexBuf::getLength()
+{
+	return nFill;
+}
+
+int FlexBuf::getCapacity()
+{
+	return nSize;
+}
+
+bool FlexBuf::usedData( int nAmount )
+{
+	// Remove from the end if negative
+	if( nAmount < 0 )
+	{
+		if( nFill+nAmount < 0 )
+		{
+			nFill = nFirstChar = nLastChar = 0;
+			return true;
+		}
+		nLastChar += nAmount;
+		nFill += nAmount;
+		return true;
+	}
+	if( nAmount > nFill )
+	{
+		nAmount = nSize;
+//		return false;
+	}
+
+	//nLastChar -= nAmount;
+	nFirstChar += nAmount;
+	nFill -= nAmount;
+	
+	if( nFill == 0 )
+	{
+		nFirstChar = nLastChar = 0;
+	}
+
+	//if( nLastChar > 0 )
+	//{
+		//memmove( lpBuf, &lpBuf[nAmount], nLastChar );
+	//}
+
+	return true;
+}
+
+int FlexBuf::findChar( char cTarget )
+{
+	for( int j = nFirstChar; j < nLastChar; j++ )
+	{
+		if( lpBuf[j] == cTarget )
+		{
+			return j;
+		}
+	}
+
+	return -1;
+}
+
-- 
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