Class: FakeFS::Dir

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/fakefs/dir.rb

Overview

FakeFs Dir class

Defined Under Namespace

Modules: Tmpname

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(string) ⇒ Dir

Returns a new instance of Dir.



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# File 'lib/fakefs/dir.rb', line 13

def initialize(string)
  self.class._check_for_valid_file(string)

  @path     = FileSystem.normalize_path(string)
  @open     = true
  @pointer  = 0
  @contents = ['.', '..'] + FileSystem.find(@path).entries
  @inode    = FakeInode.new(self)
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/fakefs/dir.rb', line 7

def path
  @path
end

Class Method Details

.[](*pattern) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 65

def self.[](*pattern)
  glob pattern
end

._check_for_valid_file(path) ⇒ Object

Raises:

  • (Errno::ENOENT) 


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# File 'lib/fakefs/dir.rb', line 9

def self._check_for_valid_file(path)
  raise Errno::ENOENT, path.to_s unless FileSystem.find(path)
end

.chdir(dir, &blk) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 73

def self.chdir(dir, &blk)
  FileSystem.chdir(dir, &blk)
end

.children(dirname, opts = {}) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 94

def self.children(dirname, opts = {})
  entries(dirname, opts) - ['.', '..']
end

.chroot(_string) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/fakefs/dir.rb', line 77

def self.chroot(_string)
  raise NotImplementedError
end

.delete(string) ⇒ Object Also known as: rmdir, unlink

Raises:

  • (Errno::ENOTEMPTY) 


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# File 'lib/fakefs/dir.rb', line 81

def self.delete(string)
  _check_for_valid_file(string)
  raise Errno::ENOTEMPTY, string.to_s unless FileSystem.find(string).empty?

  FileSystem.delete(string)
end

.each_child(dirname, &_block) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 98

def self.each_child(dirname, &_block)
  Dir.open(dirname) do |file|
    next if ['.', '..'].include?(file)
    yield file
  end
end

.empty?(dirname) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fakefs/dir.rb', line 106

def self.empty?(dirname)
  _check_for_valid_file(dirname)
  if File.directory?(dirname)
    Dir.new(dirname).count <= 2
  else
    false
  end
end

.entries(dirname, _opts = {}) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 88

def self.entries(dirname, _opts = {})
  _check_for_valid_file(dirname)

  Dir.new(dirname).map { |file| File.basename(file) }
end

.exists?(path) ⇒ Boolean Also known as: exist?

Returns:

  • (Boolean) 


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# File 'lib/fakefs/dir.rb', line 69

def self.exists?(path)
  File.exist?(path) && File.directory?(path)
end

.foreach(dirname, &_block) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 116

def self.foreach(dirname, &_block)
  Dir.open(dirname) { |file| yield file }
end

.glob(pattern, flags = 0, &block) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 120

def self.glob(pattern, flags = 0, &block)
  matches_for_pattern = lambda do |matcher|
    [FileSystem.find(matcher, flags, true) || []].flatten.map do |e|
      if Dir.pwd.match(%r{\A/?\z}) ||
         !e.to_s.match(%r{\A#{Dir.pwd}/?})
        e.to_s
      else
        e.to_s.match(%r{\A#{Dir.pwd}/?}).post_match
      end
    end.sort
  end

  files =
    if pattern.is_a?(Array)
      pattern.map do |matcher|
        matches_for_pattern.call matcher
      end.flatten
    else
      matches_for_pattern.call pattern
    end

  block_given? ? files.each { |file| block.call(file) } : files
end

.home(user = nil) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 144

def self.home(user = nil)
  RealDir.home(user)
end

.mkdir(string, _integer = 0) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 148

def self.mkdir(string, _integer = 0)
  FileUtils.mkdir(string)
end

.mktmpdir(prefix_suffix = nil, tmpdir = nil) ⇒ Object

This code has been borrowed from Rubinius



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# File 'lib/fakefs/dir.rb', line 227

def self.mktmpdir(prefix_suffix = nil, tmpdir = nil)
  case prefix_suffix
  when nil
    prefix = 'd'
    suffix = ''
  when String
    prefix = prefix_suffix
    suffix = ''
  when Array
    prefix = prefix_suffix[0]
    suffix = prefix_suffix[1]
  else
    raise ArgumentError, "unexpected prefix_suffix: #{prefix_suffix.inspect}"
  end

  t = Time.now.strftime('%Y%m%d')
  n = nil

  begin
    path = "#{tmpdir}/#{prefix}#{t}-#{$$}-#{rand(0x100000000).to_s(36)}"
    path << "-#{n}" if n
    path << suffix
    mkdir(path, 0o700)
  rescue Errno::EEXIST
    n ||= 0
    n += 1
    retry
  end

  if block_given?
    begin
      yield path
    ensure
      require 'fileutils'
      # This here was using FileUtils.remove_entry_secure instead of just
      # .rm_r. However, the security concerns that apply to
      # .rm_r/.remove_entry_secure shouldn't apply to a test fake
      # filesystem. :^)
      FileUtils.rm_r path
    end
  else
    path
  end
end

.open(string, &_block) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 152

def self.open(string, &_block)
  if block_given?
    Dir.new(string).each { |file| yield(file) }
  else
    Dir.new(string)
  end
end

.pwd ⇒ Object Also known as: getwd 



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# File 'lib/fakefs/dir.rb', line 164

def self.pwd
  FileSystem.current_dir.to_s
end

.tmpdir ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 160

def self.tmpdir
  '/tmp'
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 23

def close
  @open = false
  @pointer = nil
  @contents = nil
  nil
end

#each ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 30

def each
  if block_given?
    while (f = read)
      yield f
    end
  else
    @contents.map { |entry| entry_to_relative_path(entry) }.each
  end
end

#ino ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 222

def ino
  @inode.inode_num
end

#pos ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 40

def pos
  @pointer
end

#pos=(integer) ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 44

def pos=(integer)
  @pointer = integer
end

#read ⇒ Object

Raises:

  • (IOError) 


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# File 'lib/fakefs/dir.rb', line 48

def read
  raise IOError, 'closed directory' unless @pointer
  entry = @contents[@pointer]
  @pointer += 1
  entry_to_relative_path(entry) if entry
end

#rewind ⇒ Object 



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# File 'lib/fakefs/dir.rb', line 55

def rewind
  @pointer = 0
end

#seek(integer) ⇒ Object

Raises:

  • (IOError) 


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# File 'lib/fakefs/dir.rb', line 59

def seek(integer)
  raise IOError, 'closed directory' if @pointer.nil?
  @pointer = integer
  @contents[integer]
end