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/*
* Copyright � 2006-2016 SplinterGU (Fenix/Bennugd)
* Copyright � 2002-2006 Fenix Team (Fenix)
* Copyright � 1999-2002 Jos� Luis Cebri�n Pag�e (Fenix)
*
* This file is part of Bennu - Game Development
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
*/
/*
* FILE : i_copy.c
* DESCRIPTION : Struct copy functions based on varspace type info
*
* HISTORY: 0.85 - First version
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
#include "xstrings.h"
#include "bgdrtm.h"
static int copytype( void * dst, void * src, DCB_TYPEDEF * var );
/*
* FUNCTION : copyvars
*
* Copy data using a varspace's type information. It updates the
* destination pointer while walking the variables.
*
* PARAMS :
* dst Pointer to the destination memory
* src Pointer to the data
* var Pointer to the type array
* nvars Number of variables (length of var array)
*
* RETURN VALUE :
* Number of bytes actually copied
*
*/
int copyvars( void * dst, void * src, DCB_VAR * var, int nvars )
{
int result = 0;
int partial;
for ( ; nvars > 0; nvars--, var++ )
{
partial = copytype( dst, src, &var->Type );
src = (( uint8_t* )src ) + partial;
dst = (( uint8_t* )dst ) + partial;
result += partial;
}
return result;
}
/*
* FUNCTION : copytypes
*
* Copy data from memory using type information stored in memory
*
* PARAMS :
* dst Pointer to the destination memory
* src Pointer to the source
* var Pointer to the type array
* nvars Number of variables (length of var array)
*
* RETURN VALUE :
* Number of bytes actually coppied
*
*/
int copytypes( void * dst, void * src, DCB_TYPEDEF * var, int nvars, int reps )
{
int result = 0;
int partial;
DCB_TYPEDEF * _var = var;
int _nvars = nvars ;
for ( ; reps > 0; reps-- )
{
var = _var;
nvars = _nvars;
for ( ; nvars > 0; nvars--, var++ )
{
partial = copytype( dst, src, var );
result += partial;
src = (( uint8_t* )src ) + partial;
dst = (( uint8_t* )dst ) + partial;
}
}
return result;
}
/*
* FUNCTION : copytype
*
* Copy one variable using the given type information.
*
* PARAMS :
* dst Pointer to the file object
* src Pointer to the data
* var Pointer to the variable type
*
* RETURN VALUE :
* Number of bytes actually written
*
*/
static int copytype( void * dst, void * src, DCB_TYPEDEF * var )
{
int count = 1;
int result = 0;
int n = 0;
for ( ;; )
{
switch ( var->BaseType[n] )
{
case TYPE_FLOAT:
case TYPE_INT:
case TYPE_DWORD:
case TYPE_POINTER:
memcpy( dst, src, 4 * count );
return 4 * count;
case TYPE_WORD:
case TYPE_SHORT:
memcpy( dst, src, 2 * count );
return 2 * count;
case TYPE_BYTE:
case TYPE_SBYTE:
case TYPE_CHAR:
memcpy( dst, src, count );
return count;
case TYPE_STRING:
while ( count-- )
{
string_discard( *( int * )dst );
string_use( *( int * )src );
*(( int * )dst ) = *(( int * )src );
dst = (( int * )dst ) + 1;
src = (( int * )src ) + 1;
result += 4;
}
return result;
case TYPE_ARRAY:
count *= var->Count[n];
n++;
continue;
case TYPE_STRUCT:
for ( ; count ; count-- )
{
int partial = copyvars( dst, src, dcb.varspace_vars[var->Members], dcb.varspace[var->Members].NVars );
src = (( uint8_t* )src ) + partial;
dst = (( uint8_t* )dst ) + partial;
result += partial;
}
break;
default:
fprintf( stderr, "ERROR: Runtime error - Could not copy datatype\n" ) ;
exit( 1 );
break;
}
break;
}
return result;
}
/**
* POINTER #COPY# (POINTER DEST, POINTER SRC, POINTER VARSPACE, INT VARS)
*
* Copy struct data from src to dst, using the information varspace given
**/
int bgd_copy_struct( INSTANCE * my, int * params )
{
return ( int ) copytypes(( void * )params[0], ( void * )params[1], ( DCB_TYPEDEF * )params[2], params[3], params[4] );
}
int bgd_internal_memcopy( INSTANCE * my, int * params )
{
memmove(( void * )params[0], ( void * )params[1], params[2] ) ;
return 1 ;
}
int bgd_internal_copy_string_array( INSTANCE * my, int * params )
{
int n = params[ 2 ];
while( n-- )
{
((int *)( params[ 0 ] )) [ n ] = ((int *)( params[ 1 ] )) [ n ];
string_use( ((int *)( params[ 0 ] )) [ n ] );
}
return 1 ;
}
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