Function _query_database

crawl-ref/source/database.cc:738–776

}

static string _query_database(TextDB &db, string key, bool canonicalise_key,
                              bool run_lua, bool untranslated)
{
    if (canonicalise_key)
    {
        // We have to canonicalise the key (in case the user typed it
        // in and got the case wrong.)
        lowercase(key);
    }

    // Query the DB.
    datum result;

    if (db.translation && !untranslated)
        result = _database_fetch(db.translation->get(), key);
    if (result.dsize <= 0)
        result = _database_fetch(db.get(), key);

    if (result.dsize <= 0)
        return "";

    string str((const char *)result.dptr, result.dsize);

    // <foo> is an alias to key foo
    if (str[0] == '<' && str[str.size() - 2] == '>'
        && str.find('<', 1) == str.npos
        && str.find('\n') == str.size() - 1)
    {
        return _query_database(db, str.substr(1, str.size() - 3),
                               canonicalise_key, run_lua, untranslated);
    }

    _substitute_descriptions(db, str, canonicalise_key, run_lua, untranslated);

    if (run_lua)
        _execute_embedded_lua(str);

    return str;
}

/////////////////////////////////////////////////////////////////////////////
// Quote DB specific functions.