module RIO::IF::Dir

Public Instance Methods

chdir(&block) click to toggle source

Calls ::Dir#chdir.

Changes the current working directory of the process to the directory specified by the Rio. Raises a SystemCallError (probably Errno::ENOENT) if the target directory does not exist or if the Rio does not reference a directory.

If a block is given changes to the directory specified by the rio for the length of the block and changes back outside the block

Returns the Rio

rio('/home').chdir  # change the current working directory to /home
# the working directory here is /home
rio('/tmp/data/mydata').delete!.mkpath.chdir {
   # the working directory here is /tmp/data/mydata
}
# the working directory here is /home
# File lib/rio/if/dir.rb, line 45
def chdir(&block) target.chdir(&block);self end
find(*args,&block) click to toggle source

Calls Find#find

Uses ::Find#find to find all entries recursively for a Rio that specifies a directory. Note that there are other ways to recurse through a directory structure using a Rio. See #each and #all.

Calls the block passing a Rio for each entry found. The Rio inherits file attrubutes from the directory Rio.

Returns itself

rio('adir').find { |entrio| puts "#{entrio}: #{entrio.file?}" }

rio('adir').chomp.find do |entrio|
  next unless entrio.file?
  lines = entrio[0..10]  # lines are chomped because 'chomp' was inherited
end
# File lib/rio/if/dir.rb, line 67
def find(*args,&block) target.find_entries(*args,&block); self end
glob(string,*args,&block) click to toggle source

Calls ::Dir#glob

Returns the filenames found by expanding the pattern given in string, either as an array or as parameters to the block. In both cases the filenames are expressed as a Rio. Note that this pattern is not a regexp (it�s closer to a shell glob). See File::fnmatch for details of file name matching and the meaning of the flags parameter.

# File lib/rio/if/dir.rb, line 79
def glob(string,*args,&block) target.glob(string,*args,&block) end
mkdir(*args,&block) click to toggle source

Calls FileUtils#mkdir

Makes a new directory named by the Rio with permissions specified by the optional parameter. The permissions may be modified by the value of File::umask

Returns the Rio. If the directory already exists, just returns the Rio.

rio('adir').mkdir
# File lib/rio/if/dir.rb, line 132
def mkdir(*args,&block) target.mkdir(*args,&block); self end
mkpath(&block) click to toggle source

Calls FileUtils#mkpath

Makes a new directory named by the Rio and any directories in its path that do not exist.

Returns the Rio. If the directory already exists, just returns the Rio.

rio('adir/a/b').mkpath
# File lib/rio/if/dir.rb, line 121
def mkpath(&block) target.mkpath(&block); self end
rmdir() click to toggle source

Calls ::Dir#rmdir

Deletes the directory referenced by the Rio. Raises a subclass of SystemCallError if the directory isn�t empty. Returns the Rio. If the directory does not exist, just returns the Rio.

See also rmtree, #delete, #delete!

rio('adir').rmdir # remove the empty directory 'adir'
# File lib/rio/if/dir.rb, line 92
def rmdir() target.rmdir(); self end
rmtree() click to toggle source

Calls FileUtils#rmtree

Removes a directory Rio recursively. Returns the Rio. If the directory does not exist, simply returns the Rio

If called with a block, behaves as if rmtree.each(&block) had been called

See also #delete!

rio('adir').rmtree # removes the directory 'adir' recursively

# delete the directory 'adir', recreate it and then change to the new directory
rio('adir/asubdir').rmtree.mkpath.chdir {
  ...
}
# File lib/rio/if/dir.rb, line 112
def rmtree() target.rmtree(); self end