#include "debug.h"

#include "regexwrap.h"


namespace
{
    void
        utils_regex_init(
            utils_regex&        self, 
            const std::string&  pattern,
            int                 cflags)
    {
        self.pattern        = pattern;
        self.cflags         = cflags;
        self.query_is_bad   = false;
        
        if ( self.pattern=="")  self.pattern=".";
        if ( int e = regcomp( &self.reg, self.pattern.c_str(), self.cflags))
        {
            (void) e;
            self.query_is_bad = true;
        }
        debug0 << "compiled regex " << self.pattern << "\n";
    }
}

utils_regex::utils_regex(  
        const std::string&  pattern,
        int                 cflags)
{
    utils_regex_init( *this, pattern, cflags);
}

utils_regex::utils_regex(  
    const utils_regex& rhs)

{
    utils_regex_init( *this, rhs.pattern, rhs.cflags);
}

utils_regex&
    utils_regex::operator=(
        const utils_regex& rhs)
{
    if ( !this->query_is_bad)
        regfree( &this->reg);
    utils_regex_init( *this, rhs.pattern, rhs.cflags);
    return *this;
}

utils_regex::~utils_regex()
{
    if ( !this->query_is_bad)
        regfree( &this->reg);
}