1 files changed, 206 insertions, 0 deletions

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;
+}
+