Did anyone get DirectoryWatch working?

[nkb]

Hi.
I placed the following codes at the bottom of the file DirectoryWatch.rb
and ran it from my command line in WindowsXp. Nothing seems to be
happening even when I change/add/modify files. What am I missing? Thanks.

device_manager = Dir:irectoryWatcher.new( 'c:/temp', 2 )
device_manager.name_regexp = /^[^.].*\.rb$/

device_manager.on_add = Proc.new{ |the_file, stats_hash|
puts "Hey, just found #{the_file.inspect}!"
# Store something custom
stats_hash[:blorgle] = the_file.foo
}

device_manager.on_modify = Proc.new{ |the_file, stats_hash|
puts "Hey, #{the_file.inspect} just changed."
}

device_manager.on_remove = Proc.new{ |stats_hash|
puts "Whoa, the following file just disappeared:"
stats_hash.each_pair{ |k,v|
puts "#{k} : #{v}"
}
}


device_manager.start_watching()

 

[Hal Fulton]

Hi.
I placed the following codes at the bottom of the file DirectoryWatch.rb
and ran it from my command line in WindowsXp. Nothing seems to be
happening even when I change/add/modify files. What am I missing? Thanks.

I've never tried it... Gavin can help you. Not sure what time zone he
is in.

Wonder if it's a Windows incompatibility? Does it say what platform he
developed on? I'd guess it was Linux.


Hal

 

[Gavin Kistner]

I placed the following codes at the bottom of the file
DirectoryWatch.rb and ran it from my command line in WindowsXp.
Nothing seems to be happening even when I change/add/modify files.
What am I missing? Thanks.

Hrm, dunno; didn't do any Windows testing on it. (I developed on MacOS
X.)

I'm bolting off to work right now, but will take a look at it on a
Windows box in about 10 hours and see if I can figure out what's up.

 

[Gavin Kistner]

I placed the following codes at the bottom of the file
DirectoryWatch.rb and ran it from my command line in WindowsXp.
Nothing seems to be happening even when I change/add/modify files.
What am I missing? Thanks.

The main problem is that while my library starts a new thread, you need
your code to keep running for that thread to keep running. Your code
would run and then immediately finish. A working example is below; note
in particular the unending while loop, which keeps the main program
running while the DirectoryWatcher thread runs.

An ancillary problem is that my library was not closing the file
references it created and passed around, which meant that on Windows
you couldn't modify or delete the files once it had scanned them once.
I've fixed this problem in version 0.9.6:
http://phrogz.net/RubyLibs/DirectoryWatcher.rb

Here's a program that I tested to work on Windows; I started it
running, saw it add the files in the 'watch_dir' subdirectory. I opened
a separate command window and updated and renamed files, and removed
them. The stdout output of the program follows its source code:

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file: dw_test.rb
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#!/usr/local/bin/ruby

require 'DirectoryWatcher'
require 'singleton'

class App
include Singleton

@@plugin_dir = 'watch_dir'
@@rescan_delay = 5

def initialize
@watcher = Dir:irectoryWatcher.new( @@plugin_dir, @@rescan_delay )
@watcher.on_add = Proc.new{ |the_file, stats_hash|
stats_hash[:special_number] = rand(100)
puts "#{the_file.path} has been added; it's been assigned special
number ##{stats_hash[:special_number]}"
}
@watcher.on_modify = Proc.new{ |the_file, stats_hash|
puts "#{the_file.path} (##{stats_hash[:special_number]}) just
changed."
}
@watcher.on_remove = Proc.new{ |stats_hash|
puts "It's time to remove ##{stats_hash[:special_number]}"
}
end

def run
@watcher.start_watching
while true
sleep 60
end
end
end

$app = App.instance
$app.run

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Output
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A:\dwtest> ruby dw_test.rb
watch_dir/foo.txt has been added; it's been assigned special number #76
watch_dir/foo.bar has been added; it's been assigned special number #66
It's time to remove #76
watch_dir/foo.txt has been added; it's been assigned special number #71
watch_dir/foo.txt (#71) just changed.
It's time to remove #71

 

[Daniel Berger]

Hi.
I placed the following codes at the bottom of the file DirectoryWatch.rb
and ran it from my command line in WindowsXp.

<snip>

If you don't care about cross platform support, there's also win32-changenotify.

Regards,

Dan