gistfile1.txt

/**
 * Map the request to different JSGI apps according to the URI.
 * TODO: handle host.
 */
exports.URIMap = function (map) {
    var mapping = [],
        defapp = map["*"];
    
    for (var uri in map) {
        if (uri != "*") {
            mapping.push([uri, map[uri]]);
        }            
    }
    
    return function (env) {
        for (var i = 0; i < mapping.length; i++) {
            var path = mapping[i][0];
            if (env.scriptName.slice(0, path.length) == path) {
                return mapping[i][1](env);
            }
        }            
        return defapp(env);
    }
}