From 50e27854cce7919583f1ff7a30fe550cdab69db9 Mon Sep 17 00:00:00 2001
From: Kevin Sawicki <kevin@github.com>
Date: Wed, 30 Jul 2014 10:49:25 -0700
Subject: [PATCH] Cache package metadata in main package.json file

---
 build/tasks/build-task.coffee                 |  2 +-
 build/tasks/compile-packages-slug-task.coffee | 35 +++++++++++++++++++
 src/package.coffee                            | 30 +++++++++++-----
 3 files changed, 58 insertions(+), 9 deletions(-)
 create mode 100644 build/tasks/compile-packages-slug-task.coffee

diff --git a/build/tasks/build-task.coffee b/build/tasks/build-task.coffee
index 1aefcd6f5..585bb17b6 100644
--- a/build/tasks/build-task.coffee
+++ b/build/tasks/build-task.coffee
@@ -153,7 +153,7 @@ module.exports = (grunt) ->
       fs.writeFileSync path.join(appDir, 'node_modules', 'symbols-view', 'vendor', 'ctags-win32.exe.ignore'), ''
       fs.writeFileSync path.join(shellAppDir, 'atom.exe.gui'), ''
 
-    dependencies = ['compile', 'generate-license:save', 'generate-module-cache']
+    dependencies = ['compile', 'generate-license:save', 'generate-module-cache', 'compile-packages-slug']
     dependencies.push('copy-info-plist') if process.platform is 'darwin'
     dependencies.push('set-exe-icon') if process.platform is 'win32'
     grunt.task.run(dependencies...)
diff --git a/build/tasks/compile-packages-slug-task.coffee b/build/tasks/compile-packages-slug-task.coffee
new file mode 100644
index 000000000..17f94c740
--- /dev/null
+++ b/build/tasks/compile-packages-slug-task.coffee
@@ -0,0 +1,35 @@
+path = require 'path'
+CSON = require 'season'
+fs = require 'fs-plus'
+
+module.exports = (grunt) ->
+  {spawn} = require('./task-helpers')(grunt)
+
+  grunt.registerTask 'compile-packages-slug', 'Add package metadata information to to the main package.json file', ->
+    appDir = grunt.config.get('atom.appDir')
+
+    modulesDirectory = path.join(appDir, 'node_modules')
+    packages = {}
+
+    for moduleDirectory in fs.listSync(modulesDirectory)
+      continue if path.basename(moduleDirectory) is '.bin'
+
+      metadata = grunt.file.readJSON(path.join(moduleDirectory, 'package.json'))
+      continue unless metadata?.engines?.atom?
+
+      pack = {metadata, keymaps: {}, menus: {}}
+
+      for keymapPath in fs.listSync(path.join(moduleDirectory, 'keymaps'), ['.cson', '.json'])
+        keymapPath = path.relative(appDir, keymapPath)
+        pack.keymaps[keymapPath] = CSON.readFileSync(keymapPath)
+
+      for menuPath in fs.listSync(path.join(moduleDirectory, 'menus'), ['.cson', '.json'])
+        menuPath = path.relative(appDir, menuPath)
+        pack.menus[menuPath] = CSON.readFileSync(menuPath)
+
+      packages[metadata.name] = pack
+
+    metadata = grunt.file.readJSON(path.join(appDir, 'package.json'))
+    metadata._atomPackages = packages
+
+    grunt.file.write(path.join(appDir, 'package.json'), JSON.stringify(metadata, null, 2))
diff --git a/src/package.coffee b/src/package.coffee
index 42d05d433..5ced991d2 100644
--- a/src/package.coffee
+++ b/src/package.coffee
@@ -13,6 +13,11 @@ $ = null # Defer require in case this is in the window-less browser process
 ModuleCache = require './module-cache'
 ScopedProperties = require './scoped-properties'
 
+try
+  packagesCache = require('../package.json')
+catch
+  packagesCache = {}
+
 # Loads and activates a package's main module and resources such as
 # stylesheets, keymaps, grammar, editor properties, and menus.
 module.exports =
@@ -22,13 +27,16 @@ class Package
   @stylesheetsDir: 'stylesheets'
 
   @loadMetadata: (packagePath, ignoreErrors=false) ->
-    if metadataPath = CSON.resolve(path.join(packagePath, 'package'))
-      try
-        metadata = CSON.readFileSync(metadataPath)
-      catch error
-        throw error unless ignoreErrors
+    packageName = path.basename(packagePath)
+    metadata = packagesCache[packageName]?.metadata
+    unless metadata?
+      if metadataPath = CSON.resolve(path.join(packagePath, 'package'))
+        try
+          metadata = CSON.readFileSync(metadataPath)
+        catch error
+          throw error unless ignoreErrors
     metadata ?= {}
-    metadata.name = path.basename(packagePath)
+    metadata.name = packageName
     metadata
 
   keymaps: null
@@ -177,10 +185,16 @@ class Package
     @scopedPropertiesActivated = true
 
   loadKeymaps: ->
-    @keymaps = @getKeymapPaths().map (keymapPath) -> [keymapPath, CSON.readFileSync(keymapPath)]
+    if packagesCache[@name]?
+      @keymaps = ([keymapPath, keymapObject] for keymapPath, keymapObject of packagesCache[@name].keymaps)
+    else
+      @keymaps = @getKeymapPaths().map (keymapPath) -> [keymapPath, CSON.readFileSync(keymapPath)]
 
   loadMenus: ->
-    @menus = @getMenuPaths().map (menuPath) -> [menuPath, CSON.readFileSync(menuPath)]
+    if packagesCache[@name]?
+      @menus = ([menuPath, menuObject] for menuPath, menuObject of packagesCache[@name].menus)
+    else
+      @menus = @getMenuPaths().map (menuPath) -> [menuPath, CSON.readFileSync(menuPath)]
 
   getKeymapPaths: ->
     keymapsDirPath = path.join(@path, 'keymaps')