module FakeFS::FileSystem

Public Instance Methods

add(path, object=FakeDir.new) click to toggle source
# File lib/fakefs/file_system.rb, line 35
def add(path, object=FakeDir.new)
  parts = path_parts(normalize_path(path))

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

  assert_dir d
  object.name = parts.last
  object.parent = d
  d[parts.last] ||= object
end
chdir(dir, &blk) click to toggle source
# File lib/fakefs/file_system.rb, line 78
def chdir(dir, &blk)
  new_dir = find(dir)
  dir_levels.push dir if blk

  raise Errno::ENOENT, dir unless new_dir

  dir_levels.push dir if !blk
  blk.call if blk
ensure
  dir_levels.pop if blk
end
clear() click to toggle source
# File lib/fakefs/file_system.rb, line 13
def clear
  @dir_levels = nil
  @fs = nil
end
clone(path, target = nil) click to toggle source

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

# File lib/fakefs/file_system.rb, line 51
def clone(path, target = nil)
  path    = RealFile.expand_path(path)
  pattern = File.join(path, '**', '*')
  files   = RealFile.file?(path) ? [path] : [path] + RealDir.glob(pattern, RealFile::FNM_DOTMATCH)

  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.open(f){|h| h.read }
      end
    elsif RealFile.directory?(f)
      FileUtils.mkdir_p(target_path)
    end
  end
end
current_dir() click to toggle source
# File lib/fakefs/file_system.rb, line 103
def current_dir
  find('.')
end
delete(path) click to toggle source
# File lib/fakefs/file_system.rb, line 71
def delete(path)
  if node = FileSystem.find(path)
    node.delete
    true
  end
end
dir_levels() click to toggle source
# File lib/fakefs/file_system.rb, line 5
def dir_levels
  @dir_levels ||= ['/']
end
files() click to toggle source
# File lib/fakefs/file_system.rb, line 18
def files
  fs.entries
end
find(path) click to toggle source
# File lib/fakefs/file_system.rb, line 22
def find(path)
  parts = path_parts(normalize_path(path))
  return fs if parts.empty? # '/'

  entries = find_recurser(fs, parts).flatten

  case entries.length
  when 0 then nil
  when 1 then entries.first
  else entries
  end
end
fs() click to toggle source
# File lib/fakefs/file_system.rb, line 9
def fs
  @fs ||= FakeDir.new('/')
end
normalize_path(path) click to toggle source
# File lib/fakefs/file_system.rb, line 94
def normalize_path(path)
  if Pathname.new(path).absolute?
    RealFile.expand_path(path)
  else
    parts = dir_levels + [path]
    RealFile.expand_path(parts.inject {|base, part| Pathname(base) + part }.to_s)
  end
end
path_parts(path) click to toggle source
# File lib/fakefs/file_system.rb, line 90
def path_parts(path)
  drop_root(path.split(File::SEPARATOR)).reject { |part| part.empty? }
end

Private Instance Methods

assert_dir(dir) click to toggle source
# File lib/fakefs/file_system.rb, line 151
def assert_dir(dir)
  raise Errno::EEXIST, dir.name unless dir.is_a?(FakeDir)
end
directories_under(dir) click to toggle source
# File lib/fakefs/file_system.rb, line 146
def directories_under(dir)
  children = dir.entries.select{|f| f.is_a? FakeDir}
  ([dir] + children + children.map{|c| directories_under(c)}).flatten.uniq
end
drop_root(path_parts) click to toggle source
# File lib/fakefs/file_system.rb, line 109
def drop_root(path_parts)
  # we need to remove parts from root dir at least for windows and jruby
  return path_parts if path_parts.nil? || path_parts.empty?
  root = RealFile.expand_path('/').split(File::SEPARATOR).first
  path_parts.shift if path_parts.first == root
  path_parts
end
find_recurser(dir, parts) click to toggle source
# File lib/fakefs/file_system.rb, line 117
def find_recurser(dir, parts)
  return [] unless dir.respond_to? :[]

  pattern , *parts = parts
  matches = case pattern
  when '**'
    case parts
    when ['*']
      parts = [] # end recursion
      directories_under(dir).map do |d|
        d.entries.select{|f| f.is_a?(FakeFile) || f.is_a?(FakeDir) }
      end.flatten.uniq
    when []
      parts = [] # end recursion
      dir.entries.flatten.uniq
    else
      directories_under(dir)
    end
  else
    dir.matches /\A#{pattern.gsub('.', '\.').gsub('?','.').gsub('*', '.*').gsub(/\{(.*?)\}/) { "(#{$1.gsub(',', '|')})" }}\Z/
  end

  if parts.empty? # we're done recursing
    matches
  else
    matches.map{|entry| find_recurser(entry, parts) }
  end
end