RegexPattern.h

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/*
 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#ifndef SQUID_SRC_BASE_REGEXPATTERN_H
#define SQUID_SRC_BASE_REGEXPATTERN_H
 
#include "mem/forward.h"
#include "sbuf/SBuf.h"
 
#if HAVE_REGEX_H
#include <regex.h>
#endif
 
class RegexPattern
{
    MEMPROXY_CLASS(RegexPattern);
 
public:
    RegexPattern() = delete;
    RegexPattern(const SBuf &aPattern, int aFlags);
    ~RegexPattern();
 
    RegexPattern(RegexPattern &&) = delete; // no copying of any kind
 
    bool caseSensitive() const { return !(flags & REG_ICASE); }
 
    bool isDot() const { return pattern.length() == 1 && pattern[0] == '.'; }
 
    bool match(const char *str) const {return regexec(&regex,str,0,nullptr,0)==0;}
 
    void print(std::ostream &os, const RegexPattern *previous = nullptr) const;
 
private:
    SBuf pattern;
 
    const int flags;
 
    regex_t regex;
};
 
inline std::ostream &
operator <<(std::ostream &os, const RegexPattern &rp)
{
    rp.print(os);
    return os;
}
 
#endif /* SQUID_SRC_BASE_REGEXPATTERN_H */