Function _call_recursive_replacement

crawl-ref/source/database.cc:692–736

Replace any "@foo@" markers that can be found in this database. Those that can't be found are left alone for the caller to deal with.

// Replace any "@foo@" markers that can be found in this database.
// Those that can't be found are left alone for the caller to deal with.
static void _call_recursive_replacement(string &str, TextDB &db,
                                        const string &suffix,
                                        int &num_replacements,
                                        int recursion_depth)
{
    string::size_type pos = str.find("@");
    while (pos != string::npos)
    {
        num_replacements++;
        if (num_replacements > MAX_REPLACEMENTS)
        {
            mprf(MSGCH_DIAGNOSTICS, "Too many string replacements, bailing.");
            return;
        }

        string::size_type end = str.find("@", pos + 1);
        if (end == string::npos)
        {
            mprf(MSGCH_DIAGNOSTICS, "Unbalanced @, bailing.");
            break;
        }

        string marker_full = str.substr(pos, end - pos + 1);
        string marker      = str.substr(pos + 1, end - pos - 1);

        string replacement =
            _getRandomisedStr(db, marker, suffix, num_replacements,
                              recursion_depth);

        if (replacement.empty())
        {
            // Nothing in database, leave it alone and go onto next @foo@
            pos = str.find("@", end + 1);
        }
        else
        {
            str.replace(pos, marker_full.length(), replacement);

            // Start search from pos rather than end + 1, so that if
            // the replacement contains its own @foo@, we can replace
            // that too.
            pos = str.find("@", pos);
        }
    } // while (pos != string::npos)
}

static string _query_database(TextDB &db, string key, bool canonicalise_key,
                              bool run_lua, bool untranslated)