/*
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*/
// 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;
}