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/************************************************************************/
/* */
/* Manage an array of data bytes and its size. */
/* */
/************************************************************************/
# include "appUtilConfig.h"
# include <stdlib.h>
# include <utilMemoryBuffer.h>
# include <appDebugon.h>
void utilInitMemoryBuffer( MemoryBuffer * mb )
{
mb->mbSize= 0;
mb->mbBytes= (unsigned char *)0;
return;
}
void utilCleanMemoryBuffer( MemoryBuffer * mb )
{
if ( mb->mbBytes )
{ free( mb->mbBytes ); }
mb->mbSize= 0;
mb->mbBytes= (unsigned char *)0;
return;
}
void utilEmptyMemoryBuffer( MemoryBuffer * mb )
{
mb->mbSize= 0;
if ( mb->mbBytes )
{ mb->mbBytes[0]= '\0'; }
return;
}
int utilSizeMemoryBuffer( MemoryBuffer * mb,
int size )
{
unsigned char * fresh;
fresh= (unsigned char *)realloc( mb->mbBytes, size+ 1 );
if ( ! fresh )
{ LXDEB(size,fresh); return -1; }
if ( ! mb->mbBytes )
{ fresh[0]= '\0'; }
mb->mbBytes= fresh;
mb->mbSize= size;
fresh[mb->mbSize]= '\0';
return 0;
}
int utilSetMemoryBuffer( MemoryBuffer * mb,
const unsigned char * bytes,
int size )
{
unsigned char * fresh;
fresh= (unsigned char *)realloc( mb->mbBytes, size+ 1 );
if ( ! fresh )
{ LXDEB(size,fresh); return -1; }
memcpy( fresh, bytes, size );
mb->mbBytes= fresh;
mb->mbSize= size;
fresh[mb->mbSize]= '\0';
return 0;
}
int utilAddToMemoryBuffer( MemoryBuffer * mb,
const unsigned char * bytes,
int size )
{
unsigned char * fresh;
fresh= (unsigned char *)realloc( mb->mbBytes, mb->mbSize+ size+ 1 );
if ( ! fresh )
{ LXDEB(size,fresh); return -1; }
memcpy( fresh+ mb->mbSize, bytes, size );
mb->mbBytes= fresh;
mb->mbSize= mb->mbSize+ size;
fresh[mb->mbSize]= '\0';
return 0;
}
int utilMemoryAppendBuffer( MemoryBuffer * to,
const MemoryBuffer * from )
{
return utilAddToMemoryBuffer( to, from->mbBytes, from->mbSize );
}
int utilCopyMemoryBuffer( MemoryBuffer * mbTo,
const MemoryBuffer * mbFrom )
{
if ( utilSetMemoryBuffer( mbTo, mbFrom->mbBytes, mbFrom->mbSize ) )
{ LDEB(mbFrom->mbSize); return -1; }
return 0;
}
int utilMemoryCompareBuffers( const MemoryBuffer * mb1,
const MemoryBuffer * mb2 )
{
int len;
int cmp;
len= mb1->mbSize;
if ( len > mb2->mbSize )
{ len= mb2->mbSize; }
cmp= memcmp( mb1->mbBytes, mb2->mbBytes, len );
if ( cmp > 0 )
{ cmp= 1; }
if ( cmp < 0 )
{ cmp= -1; }
return cmp;
}
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