Module: FakeFS::FileSystem

Extended by:
FileSystem
Included in:
FileSystem
Defined in:
lib/fakefs/file_system.rb

Overview

FileSystem module

Instance Method Summary collapse

Instance Method Details

#add(path, object = FakeDir.new) ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 50

def add(path, object = FakeDir.new)
  parts = path_parts(normalize_path(path))

  d = parts[0...-1].reduce(fs) do |dir, part|
    assert_dir dir[part] if dir[part]
    dir[part] ||= FakeDir.new(part, dir)
  end

  assert_dir d
  # Short-circuit if added path is file system root, to avoid adding nil-name fs entries:
  return fs if parts.empty?

  object.name = parts.last
  object.parent = d
  if object.is_a? FakeDir
    d[parts.last] ||= object
  else
    d[parts.last] = object
  end
end

#chdir(dir, &blk) ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 104

def chdir(dir, &blk)
  new_dir = find(dir)
  dir_levels.push dir.to_s if blk

  raise Errno::ENOENT, dir.to_s unless new_dir
  raise Errno::ENOTDIR, dir.to_s unless File.directory? new_dir

  dir_levels.push dir.to_s unless blk
  yield(dir) if blk
ensure
  dir_levels.pop if blk
end

#clear ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 16

def clear
  @dir_levels = nil
  @fs = nil
end

#clone(path, target = nil) ⇒ Object

copies directories and files from the real filesystem into our fake one



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

def clone(path, target = nil)
  path    = RealFile.expand_path(path)
  pattern = File.join(path, '**', '*')
  files   = if RealFile.file?(path)
              [path]
            else
              [path] + RealDir.glob(pattern, RealFile::FNM_DOTMATCH)
            end

  files.each do |f|
    target_path = target ? f.gsub(path, target) : f

    if RealFile.symlink?(f)
      FileUtils.ln_s(RealFile.readlink(f), f)
    elsif RealFile.file?(f)
      FileUtils.mkdir_p(File.dirname(f))
      File.open(target_path, File::WRITE_ONLY) do |g|
        g.print RealFile.read(f)
      end
    elsif RealFile.directory?(f)
      FileUtils.mkdir_p(target_path)
    end
  end
end

#current_dir ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 134

def current_dir
  find('.')
end

#delete(path) ⇒ Object 



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

def delete(path)
  return unless (node = FileSystem.find(path))
  node.delete
  true
end

#dir_levels ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 8

def dir_levels
  @dir_levels ||= ['/']
end

#files ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 21

def files
  fs.entries
end

#find(path, dir: nil) ⇒ Object

Finds files/directories using the exact path, without expanding globs.



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# File 'lib/fakefs/file_system.rb', line 26

def find(path, dir: nil)
  parts = path_parts(normalize_path(path, dir: dir))
  return fs if parts.empty? # '/'

  find_recurser(fs, parts)
end

#find_with_glob(path, find_flags = 0, gave_char_class = false, dir: nil) ⇒ Object

Finds files/directories expanding globs.



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# File 'lib/fakefs/file_system.rb', line 34

def find_with_glob(path, find_flags = 0, gave_char_class = false, dir: nil)
  parts = path_parts(normalize_path(path, dir: dir))
  return fs if parts.empty? # '/'

  entries = Globber.expand(path).flat_map do |pattern|
    parts = path_parts(normalize_path(pattern, dir: dir))
    find_with_glob_recurser(fs, parts, find_flags, gave_char_class).flatten
  end

  case entries.length
  when 0 then nil
  when 1 then entries.first
  else entries
  end
end

#fs ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 12

def fs
  @fs ||= FakeDir.new('/')
end

#normalize_path(path, dir: nil) ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 121

def normalize_path(path, dir: nil)
  if Pathname.new(path).absolute?
    RealFile.expand_path(path)
  else
    dir ||= dir_levels
    dir = Array(dir)
    parts = dir + [path]
    RealFile.expand_path(parts.reduce do |base, part|
                           Pathname(base) + part
                         end.to_s)
  end
end

#path_parts(path) ⇒ Object 



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# File 'lib/fakefs/file_system.rb', line 117

def path_parts(path)
  Globber.path_components(path)
end