node-init.js

/**
 * Copyright (c) 2011 Bruno Jouhier <bruno.jouhier@sage.com>
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 * 
 * Note: only tested with 0.2.6
 */
require("../../narcissus/lib/jsdefs");
require("../../narcissus/lib/jslex");
require("../../narcissus/lib/jsparse");
require("../../narcissus/lib/jsdecomp");

var transform = require("./transform").transform;

var path = require('path');
var fs = require('fs');

var preamble = '// Generated by StreamlineJS [https://github.com/Sage/streamlinejs]\n\n'

if (require.extensions !== undefined) {
    var util = require('util');

    require.extensions['.js'] = (function(old_handler) {
        return function(module, filename) {
            var dirname = path.dirname(filename);
            var ext = path.extname(filename);
            var basename = path.basename(filename, ext);
            var filename_ = path.join(dirname, basename + '_' + ext);
            try {
                var content = fs.readFileSync(filename_, 'utf8');
            } catch (err) {
                return old_handler(module, filename);
            }
            var transformed = preamble + transform(content);
            fs.writeFileSync(filename, transformed, 'utf8');
            return old_handler(module, filename);
        }
    })(require.extensions['.js']);
}

else if (require.registerExtension !== undefined) {
    require.registerExtension(".js", function(content) {
        if (content.indexOf("!!STREAMLINE!!") < 0) {
            return content;
        } else {
            return transform(content);
        }
    })
}