Update WebKit nightly

README

To use this:

1. check out the gist somewhere
2. edit the plist to contain the path to the .rb file
3. run this:
      chmod +x update-webkit.rb
      launchctl load com.indirect.update-webkit.plist

com.indirect.update-webkit.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Label</key>
	<string>com.indirect.update-webkit</string>
	<key>ProgramArguments</key>
	<array>
		<string>/Users/andre/sw/bash/update-webkit/update-webkit.rb</string>
	</array>
	<key>QueueDirectories</key>
	<array/>
	<key>StartCalendarInterval</key>
	<dict>
		<key>Hour</key>
		<integer>3</integer>
		<key>Minute</key>
		<integer>0</integer>
	</dict>
	<key>WatchPaths</key>
	<array/>
</dict>
</plist>

update-webkit.rb

#!/usr/bin/env ruby
# Automatically update to the latest WebKit nightly build
# written 2008-10-09 by Andre Arko <andre@arko.net>
# http://github.com/indirect
LOG_FILE = "~/Library/Logs/WebKitUpdate.log"
TEMP_DIR = "/tmp/webkit/"

require 'fileutils'

# Get the current nightly's info
`curl -Ls "http://nightly.webkit.org/index.html"`.match(/"(.*?\/mac\/WebKit-SVN-r(.*?).dmg)"/)
nightly_link    = $1
nightly_version = $2
installed_version = `cat /Applications/WebKit.app/Contents/Resources/VERSION`.chomp if File.exist?("/Applications/WebKit.app")

begin
  # Kill running WebKit
  wk_pid = `ps ux | awk '/WebKit/ && !/awk/ {print $2}'`.chomp
  `kill -9 #{wk_pid}` unless wk_pid.empty?
  
  # Create the temp dir and download the nightly dmg into it
  FileUtils.mkdir_p(TEMP_DIR)
  Dir.chdir(TEMP_DIR)
  `curl -LOs #{nightly_link}`

  # Mount the dmg, copy the nightly webkit, unmount the dmg
  dmg_path = File.join(TEMP_DIR, "WebKit-SVN-r#{nightly_version}.dmg")
  raise ArgumentError, "cannot find dmg" unless File.exist?(dmg_path)
  `hdiutil attach -quiet #{dmg_path}`
  `rm -rf /Applications/WebKit.app`
  `cp -R /Volumes/WebKit/WebKit.app /Applications/`
  `hdiutil detach -quiet /Volumes/WebKit`

  # Remove the temp dir
  `rm -rf #{TEMP_DIR}`
  
  # Log the update
  File.open(File.expand_path(LOG_FILE), "w+") do |f|
    f.write "WebKit build #{nightly_version} replaced build #{installed_version} on #{`date`}"
  end
  
rescue => e
  File.open(File.expand_path(LOG_FILE), "w+") do |f|
    f.write e.inspect
  end
end unless installed_version.any? && (nightly_version == installed_version)