50 lines
1.8 KiB
JavaScript
50 lines
1.8 KiB
JavaScript
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/*
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Copyright (c) 2012, Yahoo! Inc. All rights reserved.
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Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
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*/
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//EXPERIMENTAL code: do not rely on this in anyway until the docs say it is allowed
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var path = require('path'),
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yuiRegexp = /yui-nodejs\.js$/;
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module.exports = function (matchFn, transformFn, verbose) {
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return function (file) {
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if (!file.match(yuiRegexp)) {
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return;
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}
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var YMain = require(file),
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YUI,
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loaderFn,
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origGet;
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if (YMain.YUI) {
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YUI = YMain.YUI;
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loaderFn = YUI.Env && YUI.Env.mods && YUI.Env.mods['loader-base'] ? YUI.Env.mods['loader-base'].fn : null;
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if (!loaderFn) { return; }
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if (verbose) { console.log('Applying YUI load post-hook'); }
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YUI.Env.mods['loader-base'].fn = function (Y) {
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loaderFn.call(null, Y);
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origGet = Y.Get._exec;
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Y.Get._exec = function (data, url, cb) {
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if (matchFn(url) || matchFn(path.resolve(url))) { //allow for relative paths as well
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if (verbose) {
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console.log('Transforming [' + url + ']');
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}
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try {
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data = transformFn(data, url);
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} catch (ex) {
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console.error('Error transforming: ' + url + ' return original code');
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console.error(ex.message || ex);
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if (ex.stack) { console.error(ex.stack); }
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}
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}
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return origGet.call(Y, data, url, cb);
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};
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return Y;
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};
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}
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};
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};
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