/* ==================================================================
 * General i18n functions
 * Copyright (c) 2001 by Blackboard, Inc.,
 * 1899 L Street, NW, 5th Floor
 * Washington, DC, 20036, U.S.A.
 * All rights reserved.
 * Submit RFC & bugs report to: aklimenko@blackboard.com
 * This software is the confidential and proprietary information
 * of Blackboard, Inc. ("Confidential Information").  You
 * shall not disclose such Confidential Information and shall use
 * it only in accordance with the terms of the license agreement
 * you entered into with Blackboard.
 * ==================================================================*/


// Public methods: these methods are instance methods of dynamically generated
// Javascript bundle objects. See Java class blackboard.platform.intl.JsResource
// and Perl module CI::L10n::JsResource.


// Get a string from a resource bundle
function getString(key) {
	return this[key];
}


// Get string and perform substitution using positions (arrays) or names (object)
function getFormattedString(key, parameters) {
	var string = this.getString(key);
    if (string && parameters) {
        // Convert to object keyed by string representation of array index
		if (parameters.constructor.toString() == new Array().constructor.toString()) {
            var array = parameters;
            parameters = new Object();
			for (var i = 0; i < array.length; ++i) {
                parameters[''+i] = array[i];
			}
		}
        string = _substitute(string, parameters);
	}
    return string;
}


// internal methods


function _substitute(string, parameters) {
    string = _escape(string);
    for (key in parameters) {
        string = eval("string.replace(/\\\{" + key + "\\\}/g, '" + _escape(parameters[key]) + "')");
    }
    return _unescape(string);
}


function _escape(string) {
    return (''+string).replace(/^'|(?=[^\\])'/g, "\\'").replace(/\n/g, "&crlf;");
}


function _unescape(string) {
    return string.replace(/&crlf;/g, "\n");
}