Add the post-install script.

Former-commit-id: cab08838401ab9ccf4f2333a3d353c852f59a91b

build/post-install.js

@@ -0,0 +1,88 @@
+#!/usr/bin/env node
+;(function () {
+  'use strict';
+
+  /** Load Node modules */
+  var fs = require('fs'),
+      zlib = require('zlib'),
+      path = require('path'),
+      https = require('https'),
+      tar = require('tar'),
+      npm = require('npm');
+
+  /** The directory that is the base of the repository */
+  var basePath = fs.realpathSync(path.join(__dirname, '..'));
+
+  /** The `vendor` directory */
+  var vendorPath = path.join(basePath, 'vendor');
+
+  /**
+   * Fetches a required `.tar.gz` dependency with the given Git object ID from
+   * the Lo-Dash repo on GitHub. The object ID may be obtained by running `git
+   * hash-object path/to/dependency.tar.gz`.
+   *
+   * @param {String} source The Git object ID of the `.tar.gz` package.
+   * @param {String|Object} The extraction target directory, or an object
+   *   containing archived file names and target paths as key-value pairs.
+   * @param {Function} callback The function to call once the extraction
+   *  finishes.
+   *
+   */
+  function getDependency(source, targets, callback) {
+    https.get({
+      'host': 'api.github.com',
+      'path': '/repos/bestiejs/lodash/git/blobs/' + source,
+      'headers': {
+        'Accept': 'application/vnd.github.v3.raw'
+      }
+    }, function(response) {
+      var parser;
+      if (typeof targets == 'string') {
+        parser = new tar.Extract({
+          'path': targets
+        });
+      } else {
+        parser = new tar.Parse();
+        parser.on('entry', function(entry) {
+          var path = entry.path;
+          if (path in targets) {
+            entry.pipe(fs.createWriteStream(targets[path]));
+          }
+        });
+      }
+      parser.on('end', function() {
+        callback(null, targets);
+      });
+      parser.on('error', callback);
+      response.pipe(zlib.createUnzip()).pipe(parser);
+    }).on('error', callback);
+  }
+
+  npm.load({
+    'global': true
+  }, function(exception) {
+    if (exception) {
+      process.stderr.write('There was a problem loading the npm registry.');
+      process.exit(1);
+    } else {
+      if (path.resolve(basePath, '..') == npm.root) {
+        // download Closure Compiler
+        getDependency('aa29a2ecf6f51d4da5a2a418c0d4ea0e368ee80d', vendorPath, function(exception) {
+          var statusCode = 0;
+          if (exception) {
+            process.stderr.write('There was a problem downloading Closure Compiler.');
+            statusCode = 1;
+          }
+          // download UglifyJS
+          getDependency('827f406a02626c1c6723e8ae281b6785d36375c1', vendorPath, function(exception) {
+            if (exception) {
+              process.stderr.write('There was a problem downloading UglifyJS.');
+              statusCode = 1;
+            }
+            process.exit(statusCode);
+          });
+        });
+      }
+    }
+  });
+}());