/*******************************************************************************
* Copyright 2015-2018 Intel Corporation.
*
* This software and the related documents are Intel copyrighted materials, and
* your use of them is governed by the express license under which they were
* provided to you (License). Unless the License provides otherwise, you may not
* use, modify, copy, publish, distribute, disclose or transmit this software or
* the related documents without Intel's prior written permission.
*
* This software and the related documents are provided as is, with no express
* or implied warranties, other than those that are expressly stated in the
* License.
*******************************************************************************/
// The code example below shows how to use regular expression functions:
// ippsRegExpGetSize
// ippsRegExpInit
// ippsRegExpFind_8u
#include <stdio.h>
#include "ipp.h"
/* Next two defines are created to simplify code reading and understanding */
#define EXIT_MAIN exitLine: /* Label for Exit */
#define check_sts(st) if((st) != ippStsNoErr) goto exitLine; /* Go to Exit if Intel(R) Integrated Primitives (Intel(R) IPP) function returned status different from ippStsNoErr */
/* Results of ippMalloc() are not validated because Intel(R) IPP functions perform bad arguments check and will return an appropriate status */
static Ipp8u string[] = "Hello World!";
int main(void)
{
const char pattern[] = "[ hH ]ello (\\w+)";
IppRegExpFind find[2] = {0};
int find_num = sizeof (find)/ sizeof (find[0]);
IppStatus status = ippStsNoErr;
int i = 0, errOffset = 0;
IppRegExpState *pRegExpState = NULL;
int regExpStateSize = 0;
check_sts( status = ippsRegExpGetSize( pattern, ®ExpStateSize ) )
pRegExpState = (IppRegExpState*)ippMalloc( regExpStateSize );
check_sts( status = ippsRegExpInit( pattern, NULL, pRegExpState, &errOffset ) )
check_sts( status = ippsRegExpFind_8u( string, sizeof (string) - 1, pRegExpState, find, &find_num ) )
printf ( "Found strings number = %d\n", find_num );
for( i = 0; i < find_num ; i ++ ) {
Ipp8u tmp = ((Ipp8u*)find[i].pFind)[find[i].lenFind];
((Ipp8u*)find[i].pFind)[find[i].lenFind] = 0;
printf ( "%d: %s\n", i, (char*)find[i].pFind );
((Ipp8u*)find[i].pFind )[find[i].lenFind ] = tmp;
}
EXIT_MAIN
printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
return (int)status;
}