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#include <pcre.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define OVECSZ 30 /* must be multiple of 3 */
/* sample usage: ./captures 'abc(\d+)(_(\d+))?' abc123_999 */
int main(int argc, char *argv[]) {
int i,rc,j;
if (argc < 3) {
fprintf(stderr, "usage: <regex> <testpat1> ...\n");
exit(-1);
}
const char *err; int off, ovec[OVECSZ];
pcre *re = pcre_compile(argv[1], 0, &err, &off, NULL);
if (re == NULL) {
fprintf(stderr, "error in regex %s: %s (offset %u)\n", argv[1], err, off);
exit(-1);
}
for(i=2; i < argc; i++) {
char *s = argv[i];
printf("testing %s:\n",s);
if ( (rc=pcre_exec(re, NULL, s, strlen(s), 0, 0, ovec, OVECSZ)) > 0) {
for(j=0; j < rc*2; j+=2) {
printf(" $%u matched %.*s\n", j/2, ovec[j+1]-ovec[j], &s[ovec[j]]);
}
}
printf("\n");
}
}
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