1 files changed, 135 insertions, 0 deletions
diff --git a/src/kvilib/ext/kvi_databuffer.cpp b/src/kvilib/ext/kvi_databuffer.cpp
new file mode 100644
index 00000000..7cad39c4
--- /dev/null
+++ b/src/kvilib/ext/kvi_databuffer.cpp
@@ -0,0 +1,135 @@
+//
+//   File : kvi_databuffer.cpp
+//   Creation date : Thu Aug 23 17:04:24 2001 GMT by Szymon Stefanek
+//
+//   This file is part of the KVirc irc client distribution
+//   Copyright (C) 2001 Szymon Stefanek (pragma at kvirc dot net)
+//
+//   This program is FREE software. You can redistribute it and/or
+//   modify it under the terms of the GNU General Public License
+//   as published by the Free Software Foundation; either version 2
+//   of the License, or (at your opinion) any later version.
+//
+//   This program is distributed in the HOPE that it will be USEFUL,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//   See the GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program. If not, write to the Free Software Foundation,
+//   Inc. ,51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+
+#define __KVILIB__
+
+
+#define _KVI_DEBUG_CHECK_RANGE_
+
+#include "kvi_debug.h"
+
+#include "kvi_databuffer.h"
+#include "kvi_malloc.h"
+#include "kvi_memmove.h"
+
+// FIXME: this could resize in chunks!...this would be damn faster :)
+
+KviDataBuffer::KviDataBuffer(int uSize,const unsigned char * data)
+{
+	__range_valid(uSize > 0);
+	m_uSize = uSize;
+	m_pData = (unsigned char *)kvi_malloc(sizeof(unsigned char) * uSize);
+	if(data)kvi_memmove(m_pData,data,uSize);
+}
+
+KviDataBuffer::KviDataBuffer()
+{
+	m_uSize = 0;
+	m_pData = 0;
+}
+
+KviDataBuffer::~KviDataBuffer()
+{
+	if(m_pData)
+	{
+		__range_valid(m_uSize);
+		kvi_free(m_pData);
+	}
+}
+
+int KviDataBuffer::find(const unsigned char * block,int uSize)
+{
+	if(uSize < 1)return -1;
+	if(uSize > m_uSize)return -1;
+
+	int uSearchSize = (m_uSize - uSize) + 1;
+
+	for(int i=0;i<uSearchSize;i++)
+	{
+		if(m_pData[i] == *block)
+		{
+			// good beginning
+			if(uSize == 1)return i;
+			int j;
+			for(j = 1;j<uSize;j++)
+			{
+				if(m_pData[i + j] != block[j])
+				{
+					j = 0;
+					break;
+				}
+			}
+			if(j > 0)return i;
+		}
+	}
+
+	return -1;
+}
+
+int KviDataBuffer::find(unsigned char c)
+{
+	const unsigned char * p = m_pData;
+	const unsigned char * e = p + m_uSize;
+	while(p < e)
+	{
+		if(*p == c)return (p - m_pData);
+		p++;
+	}
+	return -1;
+}
+
+
+void KviDataBuffer::remove(int uSize)
+{
+	__range_valid((uSize <= m_uSize) && (uSize > 0));
+
+	m_uSize -= uSize;
+
+	if(m_uSize > 0)
+	{
+		kvi_memmove(m_pData,m_pData + uSize,m_uSize);
+		m_pData = (unsigned char *)kvi_realloc(m_pData,m_uSize * sizeof(unsigned char));
+	} else {
+		kvi_free(m_pData);
+		m_pData = 0;
+	}
+}
+
+void KviDataBuffer::resize(int uSize)
+{
+	__range_valid(uSize >= 0);
+	if(uSize > 0)
+	{
+		m_pData = (unsigned char *)kvi_realloc(m_pData,uSize * sizeof(unsigned char));
+	} else {
+		kvi_free(m_pData);
+		m_pData = 0;
+	}
+	m_uSize = uSize;
+}
+
+void KviDataBuffer::append(const unsigned char * data,int uSize)
+{
+	m_pData = (unsigned char *)kvi_realloc(m_pData,m_uSize + uSize);
+	kvi_memmove(m_pData + m_uSize,data,uSize);
+	m_uSize += uSize;
+}