Function set

src/OSspecific/POSIX/regExp.C:116–160

// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //

void Foam::regExp::set(const char* pattern, const bool ignoreCase) const
{
    clear();

    // Avoid nullptr and zero-length patterns
    if (pattern && *pattern)
    {
        int cflags = REG_EXTENDED;
        if (ignoreCase)
        {
            cflags |= REG_ICASE;
        }

        const char* pat = pattern;

        // Check for embedded prefix for ignore-case
        // this is the only embedded prefix we support
        // - a simple check is sufficient
        if (!strncmp(pattern, "(?i)", 4))
        {
            cflags |= REG_ICASE;
            pat += 4;

            // avoid zero-length patterns
            if (!*pat)
            {
                return;
            }
        }

        preg_ = new regex_t;
        int err = regcomp(preg_, pat, cflags);

        if (err != 0)
        {
            char errbuf[200];
            regerror(err, preg_, errbuf, sizeof(errbuf));

            FatalErrorInFunction
                << "Failed to compile regular expression '" << pattern << "'"
                << nl << errbuf
                << exit(FatalError);
        }
    }
}


void Foam::regExp::set(const std::string& pattern, const bool ignoreCase) const