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mregexp.cc

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#include <magic/mobject.h>
#include <magic/mstring.h>
#include <magic/mmagisupp.h>
#include <magic/mpararr.h>
#include <magic/mregexp.h>

// impl_dynamic (RegExp, {Object});

    

BEGIN_NAMESPACE (MagiC);

RegExp::~RegExp () {
    if (regt) {
        regfree (regt);
        delete regt;
        regt=NULL;
    }
}

int RegExp::make (const char* expr) {
    this->~RegExp ();
    regt = new regex_t;

    if ((errcode = regcomp (regt, expr, REG_EXTENDED)))
        throw invalid_format (format ("%%%%%%RegExp Error:%s\n", (CONSTR) geterror ()));

    return errcode;
}
    
int RegExp::match (const char* str) {
    return !(errcode = regexec (regt, str, 0, NULL, REG_NOSUB));
}

int RegExp::match (const String& str, Array<String>& results) {
    regmatch_t matches [20];
    errcode = regexec (regt, str, 20, matches, 0);
    if (errcode) {
        if (errcode == REG_NOMATCH)
            return 0;
        else
            throw invalid_format (geterror());
    }

    int rescnt=0;
    for (; rescnt<19; rescnt++)
        if (matches[rescnt].rm_so > int(str.length()) || matches[rescnt].rm_eo > int(str.length()) ||
            matches[rescnt].rm_so < 0 || matches[rescnt].rm_eo < 0 ||
            matches[rescnt].rm_so > matches[rescnt].rm_eo)
            break;

    results.resize (rescnt);

    for (int i=0; i<rescnt; i++)
        results[i] = str.mid (matches[i].rm_so, matches[i].rm_eo-matches[i].rm_so);

    return 1;
}

String RegExp::geterror () const {
    char errbuf [256];
    regerror (errcode, regt, errbuf, 256);
    return errbuf;
}

END_NAMESPACE;

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