1 files changed, 185 insertions, 0 deletions
diff --git a/support/ltx2mathml/src/ltx2mathmlclasses.cpp b/support/ltx2mathml/src/ltx2mathmlclasses.cpp
new file mode 100644
index 0000000000..81dbc603dd
--- /dev/null
+++ b/support/ltx2mathml/src/ltx2mathmlclasses.cpp
@@ -0,0 +1,185 @@
+
+#include "ltx2mathmlclasses.h"
+#include <stdio.h>
+
+Buffer::Buffer()
+{
+	m_buf   = NULL;
+	m_index = 0;
+	m_size  = 0;
+}
+
+Buffer::~Buffer()
+{
+	destroy();
+}
+
+void Buffer::destroy()
+{
+	if( m_buf != NULL )
+		free( m_buf );
+
+	m_buf   = NULL;
+	m_index = 0;
+}
+
+void Buffer::setlength( size_t len )
+{
+	char *tmp = (char *) realloc( m_buf, len + 1 );
+
+	if( tmp != NULL )
+	{
+		m_buf = tmp;
+
+		m_size = len;
+		if( m_index > len )	// truncated
+		{
+			m_index = len;
+		}
+		else
+		{			
+			ZeroMemory( &m_buf[ m_index ], ( len - m_index ) );
+		}
+	}
+	else
+		throw ex_out_of_memory;
+}
+
+size_t  Buffer::length()
+{
+	return m_index;
+}
+
+void Buffer::format( const char *fmt, ... )
+{
+	va_list list;
+	size_t len;
+	char s[256];
+
+	va_start( list, fmt );
+	//len = vsprintf_s( s, sizeof( s ) - 1, fmt, list );
+	len = vsprintf( s, fmt, list );
+	va_end( list );
+	_write( m_index, s, len );
+}
+
+
+void Buffer::_write( size_t index, const char *s, size_t len )
+{
+	if( !s || ( len <= 0 ) )
+	{
+		return;
+	}
+
+	if( ( m_size - m_index ) <= len	)
+	{
+		setlength( m_size + len + 1);
+		
+	}
+
+	memcpy( &m_buf[ index ], s, len );
+
+	
+	m_index += len;
+}
+
+
+void Buffer::write( const char *s, size_t len )
+{
+	_write( m_index, s, len );
+}
+
+void Buffer::write( const char *s )
+{
+	_write( m_index, s, strlen( s ) );
+}
+
+char *Buffer::data( size_t *len )
+{
+	if( len != NULL )
+	{
+		*len = m_index;
+	}
+
+	return m_buf;
+}
+
+
+void Buffer::append( Buffer &buf, bool transfer )
+{
+	if( transfer && m_index == 0 )
+	{
+		BufferStruct temp;
+
+		buf.releaseBuffer( temp );
+
+		m_buf   = temp.m_buf;
+		m_index = temp.m_index;
+		m_size  = temp.m_size;
+	}
+	else
+	{
+		_write( m_index, buf.m_buf, buf.m_index );
+	}
+}
+
+void Buffer::releaseBuffer( BufferStruct &buf )
+{
+	buf.m_buf   = m_buf;
+	buf.m_index = m_index;
+	buf.m_size  = m_size;
+	
+	m_size  = 0;
+	m_index = 0;	
+	m_buf   = NULL;
+}
+
+void Buffer::reset()
+{
+	ZeroMemory( m_buf, m_index );	
+	m_index  = 0;
+}
+
+char *Buffer::release()
+{
+	char *temp;
+
+	temp    = m_buf;
+	m_size  = 0;
+	m_index = 0;	
+	m_buf   = NULL;
+
+	return temp;
+}
+
+void Buffer::insertAt( size_t index, const char *s )
+{
+	size_t len, count;
+	char *src, *dest;
+
+	len = strlen( s );
+
+	if( len == 0 )
+	  return;
+
+	if( index >= m_index )
+	{
+		_write( index, s, len );
+		return;
+	}
+
+	if( ( m_size - m_index ) <= len	)
+	{
+		setlength( m_size + len + 1);		
+	}
+	src = m_buf + index;
+	dest = src + len;
+	
+	count = m_index - index;
+	
+	//memmove_s( dest, m_size, src, count );
+
+	memmove( dest, src, count );	
+	memcpy( m_buf + index, s, len );
+	m_index += len;
+}