From bebc878b054a06ff8e541db695b1e586fff2b022 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Tue, 27 Mar 2007 21:05:10 +0000
Subject: Added a new helper to the flexbuf, and likewise to the connection
 class, since it uses it heavily.

---
 src/connection.cpp |  5 +++++
 src/connection.h   |  2 ++
 src/flexbuf.cpp    | 23 +++++++++++++++++++++++
 src/flexbuf.h      |  2 ++
 4 files changed, 32 insertions(+)

(limited to 'src')

diff --git a/src/connection.cpp b/src/connection.cpp
index a5fac5b..f042705 100644
--- a/src/connection.cpp
+++ b/src/connection.cpp
@@ -29,6 +29,11 @@ Connection::~Connection()
 	if( pProtocol != NULL ) delete pProtocol;
 }
 
+void Connection::ensureCapacity( int nSize )
+{
+	xOutputBuf.ensureCapacity( nSize );
+}
+
 bool Connection::appendOutput( const char *lpOutput, int nSize )
 {
 	return xOutputBuf.appendData( lpOutput, nSize );
diff --git a/src/connection.h b/src/connection.h
index 5d2d9bd..7e1141d 100644
--- a/src/connection.h
+++ b/src/connection.h
@@ -51,6 +51,8 @@ public:
 	 */
 	bool open( const char *sAddr, int nPort );
 
+	void ensureCapacity( int nSize );
+
 	/** Append the given data to the output.  The data is presumed to be null
 	  * terminated.  To put binary data into the stream, use the other
 	  * appendOutput function.  This should be the only method used to
diff --git a/src/flexbuf.cpp b/src/flexbuf.cpp
index acd55a7..6d55294 100644
--- a/src/flexbuf.cpp
+++ b/src/flexbuf.cpp
@@ -204,3 +204,26 @@ int FlexBuf::findChar( char cTarget )
 	return -1;
 }
 
+void FlexBuf::ensureCapacity( int nAmount )
+{
+	if( nLastChar + nAmount + 1 > nSize )
+	{
+		if( nFill + nAmount + 1 < nSize )
+		{
+			memcpy( lpBuf, lpBuf+nFirstChar, nFill );
+			nLastChar -= nFirstChar;
+			nFirstChar = 0;
+		}
+		else
+		{
+			nSize += nAmount+1;
+			char *lpNewBuf = new char[nSize];
+			memcpy( lpNewBuf, lpBuf+nFirstChar, nFill );
+			delete[] lpBuf;
+			lpBuf = lpNewBuf;
+			nLastChar -= nFirstChar;
+			nFirstChar = 0;
+		}
+	}
+}
+
diff --git a/src/flexbuf.h b/src/flexbuf.h
index a68dcc6..7d7f11a 100644
--- a/src/flexbuf.h
+++ b/src/flexbuf.h
@@ -144,6 +144,8 @@ public:
 	  */
 	int findChar( char cTarget );
 
+	void ensureCapacity( int nAmount );
+
 private:
 	/** The raw storage location of the FlexBuf. */
 	char *lpBuf;
-- 
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