regex.cpp
No OneTemporary
Actions

Authored By

Unknown

Size

1 KB

Referenced Files

None

Subscribers

None

regex.cpp
View Options

	#include <string>
	/* gnu/posix's regex header */
	#include <regex.h>
	/* our regex header */
	#include "regex.h"

	using namespace std;

	/* http://www.gnu.org/s/libc/manual/html_node/Regular-Expressions.html */
	bool Util::matchRegex(const string & str, const string & pattern){
	regex_t regex;
	if (regcomp(&regex, pattern.c_str(), REG_EXTENDED) != 0){
	return false;
	}
	bool matched = regexec(&regex, str.c_str(), 0, NULL, 0) == 0;
	regfree(&regex);
	return matched;
	}

	string Util::captureRegex(const string & str, const string & pattern, int capture){
	regex_t regex;
	regmatch_t matches[20];
	if (regcomp(&regex, pattern.c_str(), REG_EXTENDED) != 0){
	return "";
	}
	bool matched = regexec(&regex, str.c_str(), 20, matches, 0) == 0;
	regfree(&regex);
	if (matched){
	if (matches[capture+1].rm_so != -1){
	int start = matches[capture+1].rm_so;
	int end = matches[capture+1].rm_eo;
	return str.substr(start, end);
	}
	}
	return "";
	}