Class: Train::Extras::UnixFile

Inherits:
FileCommon show all
Defined in:
lib/train/extras/file_unix.rb

Direct Known Subclasses

AixFile, LinuxFile

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from FileCommon

#basename, #block_device?, #character_device?, #directory?, #file?, #grouped_into?, #linked_to?, #md5sum, #mode?, #mounted?, #owned_by?, #pipe?, #sha256sum, #socket?, #symlink?, #type, #unix_mode_mask, #version?

Constructor Details

#initialize(backend, path) ⇒ UnixFile

Returns a new instance of UnixFile.



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# File 'lib/train/extras/file_unix.rb', line 11

def initialize(backend, path)
  @backend = backend
  @path = path
  @spath = Shellwords.escape(@path)
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/train/extras/file_unix.rb', line 10

def path
  @path
end

Instance Method Details

#content ⇒ Object 



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# File 'lib/train/extras/file_unix.rb', line 17

def content
  @content ||= case
               when !exist?, directory?
                 nil
               when size.nil?, size == 0
                 ''
               else
                 @backend.run_command("cat #{@spath}").stdout || ''
               end
end

#exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/train/extras/file_unix.rb', line 28

def exist?
  @exist ||= (
    @backend.run_command("test -e #{@spath}")
            .exit_status == 0
  )
end

#file_version ⇒ Object 



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# File 'lib/train/extras/file_unix.rb', line 64

def file_version
  nil
end

#link_path ⇒ Object 



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# File 'lib/train/extras/file_unix.rb', line 41

def link_path
  return nil unless symlink?
  @link_path ||=
    @backend.run_command("readlink #{@spath}").stdout.chomp
end

#link_target ⇒ Object 



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# File 'lib/train/extras/file_unix.rb', line 35

def link_target
  return @link_target if defined? @link_target
  return @link_target = nil if link_path.nil?
  @link_target = @backend.file(link_path)
end

#mounted ⇒ Object 



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# File 'lib/train/extras/file_unix.rb', line 47

def mounted
  @mounted ||=
    @backend.run_command("mount | grep -- ' on #{@spath}'")
end

#product_version ⇒ Object 



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# File 'lib/train/extras/file_unix.rb', line 60

def product_version
  nil
end

#stat ⇒ Object 



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# File 'lib/train/extras/file_unix.rb', line 68

def stat
  return @stat if defined?(@stat)
  @stat = Train::Extras::Stat.stat(@spath, @backend)
end