function ProxyFile() { }

ProxyFile.prototype._setFile = function(lazy) {

this._lazy = lazy;

};

ProxyFile.prototype._inspect = function() {

if(this._lazy === undefined) throw new Error("Can't call inspect_() outside of a lazy function");

return this._lazy;

};

ProxyFile.prototype.map = function(fn) {

return function() {

return fn(this._inspect());

}.bind(this);

};

ProxyFile.prototype.mapName = function(fn) {

return function() {

return fn(this._inspect().getFilename());

}.bind(this);

};

ProxyFile.prototype.patsubst = function(pattern, replacement) {

return this.mapName(patsubst.bind(this, pattern, replacement));

};

function ProxyFileList() { }

ProxyFileList.prototype.names = function() {

return this._lazies.getFilenames();

};

exports.ProxyFile = ProxyFile;

exports.ProxyFileList = ProxyFileList;

function patsubst(pattern, replacement, string) {

var regex = new RegExp(pattern.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1").replace("%", "(.+)")),

result = regex.exec(string),

sub = result[1],

out = replacement.replace("%", sub);

return out;

}