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#ifndef GENERS_REGEX_HH_
#define GENERS_REGEX_HH_
#include "Alignment/Geners/interface/CPP11_config.hh"
#ifdef CPP11_STD_AVAILABLE
// Use C++11 regex matching
#include <regex>
namespace gs {
typedef std::regex Regex;
}
#else // CPP11_STD_AVAILABLE
// Use POSIX extended regex matching
#include "Alignment/Geners/interface/IOException.hh"
#include <cassert>
#include <regex.h>
#include <string>
#include <sys/types.h>
namespace gs {
class SearchSpecifier;
class Regex {
friend class SearchSpecifier;
std::string re_;
mutable regex_t *preg_;
inline void cleanup() {
if (preg_) {
regfree(preg_);
delete preg_;
preg_ = 0;
}
}
inline bool matches(const std::string &sentence) const {
if (!preg_) {
preg_ = new regex_t();
assert(!regcomp(preg_, re_.c_str(), REG_EXTENDED | REG_NOSUB));
}
return regexec(preg_, sentence.c_str(), 0, 0, 0) == 0;
}
public:
inline Regex() : preg_(0) {}
inline Regex(const std::string &re) : re_(re), preg_(new regex_t()) {
const int statusCode = regcomp(preg_, re_.c_str(), REG_EXTENDED | REG_NOSUB);
if (statusCode) {
const size_t n = regerror(statusCode, preg_, 0, 0);
std::string s;
s.resize(n + 1);
regerror(statusCode, preg_, const_cast<char *>(s.data()), n + 1);
cleanup();
throw gs::IOInvalidArgument(s.data());
}
}
inline Regex(const Regex &r) : re_(r.re_), preg_(0) {}
inline Regex &operator=(const Regex &r) {
if (&r == this)
return *this;
re_ = r.re_;
cleanup();
return *this;
}
inline ~Regex() { cleanup(); }
};
} // namespace gs
#endif // CPP11_STD_AVAILABLE
#endif // GENERS_REGEX_HH_
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