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# Vendored from Rucola: http://github.com/alloy/rucola/tree/master
#
# Copyright (c) 2007, 2008, 2009 Eloy Duran <eloy.de.enige@gmail.com>
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following
# conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
begin
require 'osx/cocoa'
OSX.require_framework '/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework'
module Rucola
class FSEvents
class FSEvent
attr_reader :fsevents_object
attr_reader :id
attr_reader :path
def initialize(fsevents_object, id, path)
@fsevents_object, @id, @path = fsevents_object, id, path
end
# Returns an array of the files/dirs in the path that the event occurred in.
# The files are sorted by the modification time, the first entry is the last modified file.
def files
Dir.glob("#{File.expand_path(path)}/*").sort_by {|f| File.mtime(f) }.reverse
end
# Returns the last modified file in the path that the event occurred in.
def last_modified_file
files.first
end
end
class StreamError < StandardError; end
attr_reader :paths
attr_reader :stream
attr_accessor :allocator
attr_accessor :context
attr_accessor :since
attr_accessor :latency
attr_accessor :flags
# Initializes a new FSEvents `watchdog` object and starts watching the directories you specify for events. The
# block is used as a handler for events, which are passed as the block's argument. This method is the easiest
# way to start watching some directories if you don't care about the details of setting up the event stream.
#
# Rucola::FSEvents.start_watching('/tmp') do |events|
# events.each { |event| log.debug("#{event.files.inspect} were changed.") }
# end
#
# Rucola::FSEvents.start_watching('/var/log/system.log', '/var/log/secure.log', :since => last_id, :latency => 5) do
# Growl.notify("Something was added to your log files!")
# end
#
# Note that the method also returns the FSEvents object. This enables you to control the event stream if you want to.
#
# fsevents = Rucola::FSEvents.start_watching('/Volumes') do |events|
# events.each { |event| Growl.notify("Volume changes: #{event.files.to_sentence}") }
# end
# fsevents.stop
def self.start_watching(*params, &block)
fsevents = new(*params, &block)
fsevents.create_stream
fsevents.start
fsevents
end
# Creates a new FSEvents `watchdog` object. You can specify a list of paths to watch and options to control the
# behaviour of the watchdog. The block you pass serves as a callback when an event is generated on one of the
# specified paths.
#
# fsevents = FSEvents.new('/etc/passwd') { Mailer.send_mail("Someone touched the password file!") }
# fsevents.create_stream
# fsevents.start
#
# fsevents = FSEvents.new('/home/upload', :since => UploadWatcher.last_event_id) do |events|
# events.each do |event|
# UploadWatcher.last_event_id = event.id
# event.files.each do |file|
# UploadWatcher.logfile.append("#{file} was changed")
# end
# end
# end
#
# *:since: The service will report events that have happened after the supplied event ID. Never use 0 because that
# will cause every fsevent since the "beginning of time" to be reported. Use OSX::KFSEventStreamEventIdSinceNow
# if you want to receive events that have happened after this call. (Default: OSX::KFSEventStreamEventIdSinceNow).
# You can find the ID's passed with :since in the events passed to your block.
# *:latency: Number of seconds to wait until an FSEvent is reported, this allows the service to bundle events. (Default: 0.0)
#
# Please refer to the Cocoa documentation for the rest of the options.
def initialize(*params, &block)
raise ArgumentError, 'No callback block was specified.' unless block_given?
options = params.last.kind_of?(Hash) ? params.pop : {}
@paths = params.flatten
paths.each { |path| raise ArgumentError, "The specified path (#{path}) does not exist." unless File.exist?(path) }
@allocator = options[:allocator] || OSX::KCFAllocatorDefault
@context = options[:context] || nil
@since = options[:since] || OSX::KFSEventStreamEventIdSinceNow
@latency = options[:latency] || 0.0
@flags = options[:flags] || 0
@stream = options[:stream] || nil
@user_callback = block
@callback = Proc.new do |stream, client_callback_info, number_of_events, paths_pointer, event_flags, event_ids|
paths_pointer.regard_as('*')
events = []
number_of_events.times {|i| events << Rucola::FSEvents::FSEvent.new(self, event_ids[i], paths_pointer[i]) }
@user_callback.call(events)
end
end
# Create the stream.
# Raises a Rucola::FSEvents::StreamError if the stream could not be created.
def create_stream
@stream = OSX.FSEventStreamCreate(@allocator, @callback, @context, @paths, @since, @latency, @flags)
raise(StreamError, 'Unable to create FSEvents stream.') unless @stream
OSX.FSEventStreamScheduleWithRunLoop(@stream, OSX.CFRunLoopGetCurrent, OSX::KCFRunLoopDefaultMode)
end
# Start the stream.
# Raises a Rucola::FSEvents::StreamError if the stream could not be started.
def start
raise(StreamError, 'Unable to start FSEvents stream.') unless OSX.FSEventStreamStart(@stream)
end
# Stop the stream.
# You can resume it by calling `start` again.
def stop
OSX.FSEventStreamStop(@stream)
end
end
end
# The complete BeerEvents API :)
HOMEBREW_KEEP_DRY = %w{ /System /usr /etc /sbin /bin /Applications /Library }
def watch_out_for_spill
# Disable the RubyCocoa thread hook as apparently Laurent did not apply the
# thread patches to the OS X system Ruby
ENV['RUBYCOCOA_THREAD_HOOK_DISABLE'] = 'kampai'
Thread.new { OSX.CFRunLoopRun() }
start = Time.now
dog = Rucola::FSEvents.start_watching(*HOMEBREW_KEEP_DRY) do |events|
spill = events.map { |e| e.files }.flatten
spill.reject! { |f| File.mtime(f) < start }
spill.reject! { |path| path =~ /^#{HOMEBREW_PREFIX}/ }
# irrelevent files that change a lot
spill.reject! { |path| path == "/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist-lock" }
spill.reject! { |path| path =~ %r{^(/System)?/Library/Caches/} }
unless spill.empty?
opoo "Detected installation of files outside the Homebrew prefix:"
puts *spill
end
end
yield
ensure
dog.stop
end
rescue LoadError => e
onoe "RubyCocoa could not be loaded, therefore checking for spill is disabled."
puts "When using a custom Ruby installation, you'll need to install RubyCocoa."
puts "If this is not the case, see if the following ticket applies, or create one."
puts " http://github.com/mxcl/homebrew/issues#issue/37"
if ARGV.verbose?
onoe e.message
puts e.backtrace
end
def watch_out_for_spill
yield
end
end
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