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#include "BRegex.h"
Balau::Regex::Regex(const char * regex, bool icase) throw (GeneralException) : m_regexStr(regex), m_icase(icase) {
int r = regcomp(&m_regex, regex, REG_EXTENDED | (icase ? REG_ICASE : 0));
if (r)
throw GeneralException(getError(r));
}
Balau::Regex::Captures Balau::Regex::match(const char * str) const throw (GeneralException) {
Captures ret;
regmatch_t * matches = (regmatch_t *) alloca((m_regex.re_nsub + 1) * sizeof(regmatch_t));
int r = regexec(&m_regex, str, m_regex.re_nsub + 1, matches, 0);
if (r == REG_NOMATCH)
return ret;
if (r != 0)
throw GeneralException(getError(r));
for (int i = 0; i < m_regex.re_nsub + 1; i++) {
if (matches[i].rm_so >= 0) {
regoff_t begin = matches[i].rm_so;
regoff_t end = matches[i].rm_eo;
String t(str + begin, end - begin);
ret.push_back(t);
}
}
return ret;
}
Balau::String Balau::Regex::getError(int err) const {
size_t s;
char * t;
s = regerror(err, &m_regex, NULL, 0);
t = (char *) alloca(s);
regerror(err, &m_regex, t, s);
String r(t, s - 1);
return r;
}
Balau::Regex const Balau::Regexes::any(".*");
Balau::Regex const Balau::Regexes::empty("^$");
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