Class: Inotify

Inherits:
Object
  • Object
show all
Extended by:
FFI::Library
Defined in:
lib/inotify/inotify_native.rb

Defined Under Namespace

Classes: Event, EventStruct

Constant Summary collapse

MAX_NAME_SIZE = 
4096
ACCESS = 
0x00000001
MODIFY = 
0x00000002
ATTRIB = 
0x00000004
CLOSE_WRITE = 
0x00000008
CLOSE_NOWRITE = 
0x00000010
OPEN = 
0x00000020
MOVED_FROM = 
0x00000040
MOVED_TO = 
0x00000080
CREATE = 
0x00000100
DELETE = 
0x00000200
DELETE_SELF = 
0x00000400
MOVE_SELF = 
0x00000800
UNMOUNT =

Events sent by the kernel.

0x00002000
Q_OVERFLOW = 
0x00004000
IGNORED = 
0x00008000
ONLYDIR = 
0x01000000
DONT_FOLLOW = 
0x02000000
MASK_ADD = 
0x20000000
ISDIR =

special flags

0x40000000
ONESHOT = 
0x80000000
CLOSE =

helper events

(CLOSE_WRITE | CLOSE_NOWRITE)
MOVE = 
(MOVED_FROM | MOVED_TO)
ALL_EVENTS =

All of the events

(ACCESS | MODIFY | ATTRIB | CLOSE_WRITE | \
CLOSE_NOWRITE | OPEN | MOVED_FROM | \
MOVED_TO | CREATE | DELETE | DELETE_SELF | MOVE_SELF)

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Inotify

Returns a new instance of Inotify.



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# File 'lib/inotify/inotify_native.rb', line 46

def initialize
  @fd = self.inotify_init
  @io = FFI::IO.for_fd(@fd)
end

Instance Method Details

#add_watch(string, uint32) ⇒ Object 



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# File 'lib/inotify/inotify_native.rb', line 50

def add_watch(string, uint32)
  self.inotify_add_watch(@fd, string, uint32)
end

#close ⇒ Object 



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# File 'lib/inotify/inotify_native.rb', line 56

def close
  self.inotify_close(@fd)
end

#each_event ⇒ Object 



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# File 'lib/inotify/inotify_native.rb', line 59

def each_event
  loop do
    ready = IO.select([@io], nil, nil, nil)
    yield self.read_event
  end
end

#read_event ⇒ Object 



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# File 'lib/inotify/inotify_native.rb', line 65

def read_event
  buf = FFI::Buffer.alloc_out(EventStruct.size + MAX_NAME_SIZE, 1, false)
  ev = EventStruct.new(buf)
  n = self.read(@fd, buf, buf.total)
  Event.new(ev, buf)
end

#rm_watch(uint32) ⇒ Object 



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# File 'lib/inotify/inotify_native.rb', line 53

def rm_watch(uint32)
  self.inotify_rm_watch(@fd, uint32)
end