#include "Regex.h"
#include "config.h"

char t[1024];

Regex empty("^$"), any(".*");

Regex::Regex(const String & regex, int acflags, int aeflags) throw (GeneralException) : cflags(acflags), eflags(aeflags), pattern(regex.strdup()) {
    int r;
    
    if ((r = regcomp(&preg, pattern, cflags | REG_NOSUB))) {
	cerr << _("Error in regcomp:");
	regerror(r, &preg, t, sizeof(t));
	cerr << t << endl;
	throw GeneralException(String(_("Regex \"")) + regex + _("\" failed to compile: ") + t + "\n");
    }
}

Regex::Regex(const Regex & regex) : pattern(Base::strdup(pattern)) {
    int r;
    
    if ((r = regcomp(&preg, pattern, cflags | REG_NOSUB))) {
	cerr << "Error in regcomp:";
	regerror(r, &preg, t, sizeof(t));
	cerr << t << endl;
	throw GeneralException(String(_("Regex \"")) + pattern + _("\" failed to compile: ") + t + "\n");
    }
}

Regex::~Regex() {
    regfree(&preg);
    free(pattern);
}

bool Regex::Match(const String & s) const {
    if (regexec(&preg, s.to_charp(), 0, 0, eflags)) {
	return false;
    } else {
	return true;
    }
}