173 lines
3.6 KiB
JavaScript
Executable File
173 lines
3.6 KiB
JavaScript
Executable File
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/**
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* Module dependencies.
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*/
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var fs = require('fs');
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/**
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* Arguments.
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*/
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var args = process.argv.slice(2)
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, pending = args.length
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, files = {};
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console.log('');
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// parse arguments
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args.forEach(function(file){
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var mod = file.replace('lib/', '');
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fs.readFile(file, 'utf8', function(err, js){
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if (err) throw err;
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console.log(' \033[90mcompile : \033[0m\033[36m%s\033[0m', file);
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files[file] = parse(js);
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--pending || compile();
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});
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});
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/**
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* Parse the given `js`.
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*/
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function parse(js) {
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return parseInheritance(parseConditionals(js));
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}
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/**
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* Parse __proto__.
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*/
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function parseInheritance(js) {
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return js
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.replace(/^ *(\w+)\.prototype\.__proto__ * = *(\w+)\.prototype *;?/gm, function(_, child, parent){
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return child + '.prototype = new ' + parent + ';\n'
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+ child + '.prototype.constructor = '+ child + ';\n';
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});
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}
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/**
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* Parse the given `js`, currently supporting:
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*
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* 'if' ['node' | 'browser']
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* 'end'
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*
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*/
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function parseConditionals(js) {
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var lines = js.split('\n')
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, len = lines.length
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, buffer = true
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, browser = false
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, buf = []
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, line
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, cond;
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for (var i = 0; i < len; ++i) {
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line = lines[i];
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if (/^ *\/\/ *if *(node|browser)/gm.exec(line)) {
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cond = RegExp.$1;
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buffer = browser = 'browser' == cond;
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} else if (/^ *\/\/ *end/.test(line)) {
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buffer = true;
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browser = false;
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} else if (browser) {
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buf.push(line.replace(/^( *)\/\//, '$1'));
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} else if (buffer) {
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buf.push(line);
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}
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}
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return buf.join('\n');
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}
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/**
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* Compile the files.
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*/
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function compile() {
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var buf = '';
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buf += '\n// CommonJS require()\n\n';
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buf += browser.require + '\n\n';
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buf += 'require.modules = {};\n\n';
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buf += 'require.resolve = ' + browser.resolve + ';\n\n';
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buf += 'require.register = ' + browser.register + ';\n\n';
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buf += 'require.relative = ' + browser.relative + ';\n\n';
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args.forEach(function(file){
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var js = files[file];
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file = file.replace('lib/', '');
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buf += '\nrequire.register("' + file + '", function(module, exports, require){\n';
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buf += js;
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buf += '\n}); // module: ' + file + '\n';
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});
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fs.writeFile('ejs.js', buf, function(err){
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if (err) throw err;
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console.log(' \033[90m create : \033[0m\033[36m%s\033[0m', 'ejs.js');
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console.log();
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});
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}
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// refactored version of weepy's
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// https://github.com/weepy/brequire/blob/master/browser/brequire.js
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var browser = {
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/**
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* Require a module.
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*/
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require: function require(p){
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var path = require.resolve(p)
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, mod = require.modules[path];
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if (!mod) throw new Error('failed to require "' + p + '"');
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if (!mod.exports) {
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mod.exports = {};
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mod.call(mod.exports, mod, mod.exports, require.relative(path));
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}
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return mod.exports;
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},
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/**
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* Resolve module path.
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*/
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resolve: function(path){
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var orig = path
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, reg = path + '.js'
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, index = path + '/index.js';
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return require.modules[reg] && reg
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|| require.modules[index] && index
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|| orig;
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},
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/**
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* Return relative require().
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*/
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relative: function(parent) {
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return function(p){
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if ('.' != p.substr(0, 1)) return require(p);
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var path = parent.split('/')
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, segs = p.split('/');
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path.pop();
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for (var i = 0; i < segs.length; i++) {
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var seg = segs[i];
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if ('..' == seg) path.pop();
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else if ('.' != seg) path.push(seg);
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}
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return require(path.join('/'));
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};
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},
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/**
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* Register a module.
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*/
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register: function(path, fn){
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require.modules[path] = fn;
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}
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}; |