Module: FSSM::Support

Defined in:
lib/fssm/support.rb

Class Method Summary collapse

Class Method Details

.backend ⇒ Object 



5
6
7
8
9
10
11
12
13
14
 
# File 'lib/fssm/support.rb', line 5

def backend
  @@backend ||= case
    when mac? && !jruby? && carbon_core?
      'FSEvents'
    when linux? && rb_inotify?
      'Inotify'
    else
      'Polling'
  end
end

.carbon_core? ⇒ Boolean

Returns:

  • (Boolean) 


28
29
30
31
32
33
34
35
36
37
 
# File 'lib/fssm/support.rb', line 28

def carbon_core?
  begin
    require 'osx/foundation'
    OSX.require_framework '/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework'
    true
  rescue LoadError
    STDERR.puts("Warning: Unable to load CarbonCore. FSEvents will be unavailable.")
    false
  end
end

.jruby? ⇒ Boolean

Returns:

  • (Boolean) 


16
17
18
 
# File 'lib/fssm/support.rb', line 16

def jruby?
  defined?(JRUBY_VERSION)
end

.linux? ⇒ Boolean

Returns:

  • (Boolean) 


24
25
26
 
# File 'lib/fssm/support.rb', line 24

def linux?
  Config::CONFIG['target_os'] =~ /linux/i
end

.mac? ⇒ Boolean

Returns:

  • (Boolean) 


20
21
22
 
# File 'lib/fssm/support.rb', line 20

def mac?
  Config::CONFIG['target_os'] =~ /darwin/i
end

.rb_inotify? ⇒ Boolean

Returns:

  • (Boolean) 


39
40
41
42
43
44
45
46
47
48
49
50
51
 
# File 'lib/fssm/support.rb', line 39

def rb_inotify?
  found = begin
    require 'rb-inotify'
    if defined?(INotify::VERSION)
      version = INotify::VERSION
      version[0] > 0 || version[1] >= 6
    end
  rescue LoadError
    false
  end
  STDERR.puts("Warning: Unable to load rb-inotify >= 0.5.1. Inotify will be unavailable.") unless found
  found
end

.use_block(context, block) ⇒ Object 



53
54
55
56
57
58
59
60
 
# File 'lib/fssm/support.rb', line 53

def use_block(context, block)
  return if block.nil?
  if block.arity == 1
    block.call(context)
  else
    context.instance_eval(&block)
  end
end