/*
 ============================================================================
 Name        : test_regexp.c
 Author      : martin.dvorak@mindforger.com
 Copyright   : Apache 2.0
 Description : A test for regular expression based matching
 ============================================================================
*/

#include <regex.h>
#include <stdio.h>
#include <stdbool.h>

#define REGEXP_MATCH_BUFFER_SIZE 10

void main() {
	bool caseSensitive=false;

	char *regexp="^b";
	char *text="This is a command that I want to match: go.sh there";

	regex_t compiled;
	int compilationFlags=(caseSensitive?0:REG_ICASE);
	printf("Regular expressions matching:\n  '%s'\n  '%s'",text,regexp);
	int compilationStatus=regcomp(&compiled, regexp, compilationFlags);
	printf("\nCompilation: %d",compilationStatus);

	int matches=REGEXP_MATCH_BUFFER_SIZE;
	regmatch_t matchPtr[REGEXP_MATCH_BUFFER_SIZE];
	int matchingFlags=0;
	int matchingStatus=regexec(&compiled, text, matches, matchPtr, matchingFlags);
	printf("\nMatching (status/matches): %s %d",(!matchingStatus?"match":"no-match"),matches);

	if(!matchingStatus) {
		int i;
		for(i=0; i<REGEXP_MATCH_BUFFER_SIZE; i++) {
			printf("\n  %d %d",matchPtr[i].rm_so, matchPtr[i].rm_eo);
			if(matchPtr[i].rm_so != -1) {
				printf("\n* %d %d",matchPtr[i].rm_so,matchPtr[i].rm_eo);
			}
		}
	} else {
		regerror(matchingStatus);
	}

	printf("\n");
}