mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-02 08:07:50 +00:00
Defer downloading required minifies until the lodash command-line executable is used for the first time.
Former-commit-id: 83df0ac5875e8647168fffb7043a4cc197d27d79
This commit is contained in:
John-David Dalton
155
build/minify.js
155
build/minify.js
@@ -2,26 +2,56 @@
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;(function() {
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'use strict';
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/** The Node filesystem, path, `zlib`, and child process modules */
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/** Load Node modules */
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var fs = require('fs'),
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gzip = require('zlib').gzip,
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https = require('https'),
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path = require('path'),
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spawn = require('child_process').spawn;
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spawn = require('child_process').spawn,
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tar = require('../vendor/tar/tar.js'),
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zlib = require('zlib');
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/** Load other modules */
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var preprocess = require('./pre-compile.js'),
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postprocess = require('./post-compile.js');
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/** The Git object ID of `closure-compiler.tar.gz` */
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var closureId = 'a2787b470c577cee2404d186c562dd9835f779f5';
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/** The Git object ID of `uglifyjs.tar.gz` */
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var uglifyId = '505f1be36ef60fd25a992a522f116d5179ab317f';
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/** The path of the directory that is the base of the repository */
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var basePath = fs.realpathSync(path.join(__dirname, '..'));
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/** The path of the directory where the Closure Compiler is located */
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var closurePath = path.join(basePath, 'vendor', 'closure-compiler', 'compiler.jar');
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/** The path of the `vendor` directory */
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var vendorPath = path.join(basePath, 'vendor');
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/** Load other modules */
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var preprocess = require('./pre-compile.js'),
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postprocess = require('./post-compile.js'),
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uglifyJS = require('../vendor/uglifyjs/tools/node.js');
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/** The path to the Closure Compiler `.jar` */
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var closurePath = path.join(vendorPath, 'closure-compiler', 'compiler.jar');
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/** The path to the UglifyJS module */
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var uglifyPath = path.join(vendorPath, 'uglifyjs', 'tools', 'node.js');
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/** The Closure Compiler command-line options */
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var closureOptions = ['--warning_level=QUIET'];
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/** The media type for raw blob data */
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var mediaType = 'application/vnd.github.v3.raw';
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/** Used to reference parts of the blob href */
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var location = (function() {
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var host = 'api.github.com',
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origin = 'https://api.github.com',
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pathname = '/repos/bestiejs/lodash/git/blobs';
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return {
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'host': host,
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'href': origin + pathname,
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'origin': origin,
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'pathname': pathname
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};
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}());
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/** The Closure Compiler optimization modes */
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var optimizationModes = {
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'simple': 'SIMPLE_OPTIMIZATIONS',
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@@ -79,7 +109,30 @@
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source = fs.readFileSync(filePath, 'utf8');
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}
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new Minify(source, options);
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// fetch the Closure Compiler
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getDependency({
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'id': 'closure-compiler',
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'hashId': closureId,
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'path': vendorPath,
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'title': 'the Closure Compiler',
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'onComplete': function(exception) {
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var error = exception;
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// fetch UglifyJS
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getDependency({
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'id': 'uglifyjs',
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'hashId': uglifyId,
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'title': 'UglifyJS',
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'path': vendorPath,
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'onComplete': function(exception) {
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error || (error = exception);
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if (!error) {
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new Minify(source, options);
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}
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}
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});
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}
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});
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}
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/**
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@@ -121,6 +174,76 @@
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/*--------------------------------------------------------------------------*/
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/**
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* Fetches a required `.tar.gz` dependency with the given Git object ID from
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* the Lo-Dash repo on GitHub. The object ID may be obtained by running
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* `git hash-object path/to/dependency.tar.gz`.
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*
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* @private
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* @param {Object} options The options object.
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* id - The Git object ID of the `.tar.gz` file.
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* onComplete - The function, invoked with one argument (exception),
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* called once the extraction has finished.
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* path - The path of the extraction directory.
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* title - The dependency's title used in status updates logged to the console.
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*/
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function getDependency(options) {
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options || (options = {});
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var ran,
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destPath = options.path,
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hashId = options.hashId,
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id = options.id,
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onComplete = options.onComplete,
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title = options.title;
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// exit early if dependency exists
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if (fs.existsSync(path.join(destPath, id))) {
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onComplete();
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return;
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}
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var callback = function(exception) {
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if (ran) {
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return;
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}
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if (exception) {
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console.error([
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'There was a problem installing ' + title + '.',
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'Try running the command as root, via `sudo`, or manually install by running:',
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'',
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"curl -H 'Accept: " + mediaType + "' " + location.href + '/' + hashId + " | tar xvz -C '" + destPath + "'",
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''
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].join('\n'));
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}
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ran = true;
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process.removeListener('uncaughtException', callback);
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onComplete(exception);
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};
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console.log('Downloading ' + title + '...');
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process.on('uncaughtException', callback);
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https.get({
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'host': location.host,
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'path': location.pathname + '/' + hashId,
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'headers': {
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// By default, all GitHub blob API endpoints return a JSON document
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// containing Base64-encoded blob data. Overriding the `Accept` header
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// with the GitHub raw media type returns the blob data directly.
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// See http://developer.github.com/v3/media/.
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'Accept': mediaType
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}
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}, function(response) {
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var decompressor = zlib.createUnzip(),
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parser = new tar.Extract({ 'path': destPath });
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parser.on('end', callback);
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response.pipe(decompressor).pipe(parser);
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});
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}
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/*--------------------------------------------------------------------------*/
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/**
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* Compresses a `source` string using the Closure Compiler. Yields the
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* minified result, and any exceptions encountered, to a `callback` function.
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@@ -181,6 +304,8 @@
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console.log('Compressing ' + path.basename(this.outputPath, '.js') + ' using ' + label + '...');
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}
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try {
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var uglifyJS = require(uglifyPath);
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// 1. parse
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var toplevel = uglifyJS.parse(source);
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@@ -232,7 +357,7 @@
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}
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result = postprocess(result);
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this.compiled.simple.source = result;
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gzip(result, onClosureSimpleGzip.bind(this));
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zlib.gzip(result, onClosureSimpleGzip.bind(this));
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}
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/**
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@@ -268,7 +393,7 @@
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}
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result = postprocess(result);
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this.compiled.advanced.source = result;
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gzip(result, onClosureAdvancedGzip.bind(this));
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zlib.gzip(result, onClosureAdvancedGzip.bind(this));
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}
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/**
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@@ -304,7 +429,7 @@
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}
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result = postprocess(result);
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this.uglified.source = result;
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gzip(result, onUglifyGzip.bind(this));
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zlib.gzip(result, onUglifyGzip.bind(this));
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}
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/**
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@@ -340,7 +465,7 @@
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}
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result = postprocess(result);
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this.hybrid.simple.source = result;
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gzip(result, onSimpleHybridGzip.bind(this));
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zlib.gzip(result, onSimpleHybridGzip.bind(this));
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}
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/**
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@@ -376,7 +501,7 @@
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}
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result = postprocess(result);
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this.hybrid.advanced.source = result;
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gzip(result, onAdvancedHybridGzip.bind(this));
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zlib.gzip(result, onAdvancedHybridGzip.bind(this));
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}
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/**
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@@ -1,135 +0,0 @@
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#!/usr/bin/env node
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;(function() {
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'use strict';
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/** Load Node modules */
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var fs = require('fs'),
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path = require('path');
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/** The path of the directory that is the base of the repository */
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var basePath = fs.realpathSync(path.join(__dirname, '..'));
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/** The path of the `vendor` directory */
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var vendorPath = path.join(basePath, 'vendor');
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/** The Git object ID of `closure-compiler.tar.gz` */
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var closureId = 'a2787b470c577cee2404d186c562dd9835f779f5';
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/** The Git object ID of `uglifyjs.tar.gz` */
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var uglifyId = '505f1be36ef60fd25a992a522f116d5179ab317f';
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/** The media type for raw blob data */
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var mediaType = 'application/vnd.github.v3.raw';
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/** Used to reference parts of the blob href */
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var location = (function() {
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var host = 'api.github.com',
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origin = 'https://api.github.com',
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pathname = '/repos/bestiejs/lodash/git/blobs';
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return {
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'host': host,
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'href': origin + pathname,
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'origin': origin,
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'pathname': pathname
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};
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}());
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/*--------------------------------------------------------------------------*/
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/**
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* Fetches a required `.tar.gz` dependency with the given Git object ID from
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* the Lo-Dash repo on GitHub. The object ID may be obtained by running
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* `git hash-object path/to/dependency.tar.gz`.
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*
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* @private
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* @param {Object} options The options object.
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* id - The Git object ID of the `.tar.gz` file.
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* onComplete - The function, invoked with one argument (exception),
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* called once the extraction has finished.
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* path - The path of the extraction directory.
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* title - The dependency's title used in status updates logged to the console.
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*/
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function getDependency(options) {
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options || (options = {});
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var id = options.id,
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onComplete = options.onComplete,
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path = options.path,
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title = options.title;
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function callback(exception) {
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if (exception) {
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console.error([
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'There was a problem installing ' + title + '. To manually install, run:',
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'',
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"curl -H 'Accept: " + mediaType + "' " + location.href + '/' + id + " | tar xvz -C '" + path + "'"
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].join('\n'));
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}
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onComplete(exception);
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}
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console.log('Downloading ' + title + '...');
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https.get({
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'host': location.host,
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'path': location.pathname + '/' + id,
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'headers': {
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// By default, all GitHub blob API endpoints return a JSON document
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// containing Base64-encoded blob data. Overriding the `Accept` header
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// with the GitHub raw media type returns the blob data directly.
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// See http://developer.github.com/v3/media/.
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'Accept': mediaType
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}
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}, function(response) {
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var decompressor = zlib.createUnzip(),
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parser = new tar.Extract({ 'path': path });
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decompressor.on('error', callback);
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parser.on('end', callback).on('error', callback);
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response.pipe(decompressor).pipe(parser);
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})
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.on('error', callback);
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}
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/*--------------------------------------------------------------------------*/
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if (process.env.npm_config_global === 'true') {
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// catch module load errors
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try {
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var https = require('https'),
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tar = require('../vendor/tar/tar.js'),
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zlib = require('zlib');
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// download the Closure Compiler
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getDependency({
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'title': 'the Closure Compiler',
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'id': closureId,
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'path': vendorPath,
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'onComplete': function() {
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// download UglifyJS
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getDependency({
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'title': 'UglifyJS',
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'id': uglifyId,
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'path': vendorPath,
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'onComplete': function() {
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process.exit();
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}
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});
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}
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});
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} catch(e) {
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console.log([
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'Oops! There was a problem installing dependencies required by the Lo-Dash',
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'command-line executable. To manually install UglifyJS and the Closure Compiler',
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'run:',
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'',
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"curl -H 'Accept: " + mediaType + "' " + location.href + '/' + closureId + " | tar xvz -C '" + vendorPath + "'",
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"curl -H 'Accept: " + mediaType + "' " + location.href + '/' + uglifyId + " | tar xvz -C '" + vendorPath + "'",
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''
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].join('\n'));
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console.log(e);
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}
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}
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}());
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@@ -47,7 +47,6 @@
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},
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"scripts": {
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"build": "node ./build.js",
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"test": "node ./test/test.js && node ./test/test-build.js",
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"install": "node ./build/post-install.js"
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"test": "node ./test/test.js && node ./test/test-build.js"
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}
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}
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