Feature #3478 » pathname.diff
lib/pathname.rb | ||
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#
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# = pathname.rb
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#
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# Object-Oriented Pathname Class
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#
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# Author:: Tanaka Akira <akr@m17n.org>
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# Documentation:: Author and Gavin Sinclair
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#
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# For documentation, see class Pathname.
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#
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# <tt>pathname.rb</tt> is distributed with Ruby since 1.8.0.
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#
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require 'fileutils'
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require 'find'
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#
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# == Pathname
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#
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# Pathname represents a pathname which locates a file in a filesystem.
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# The pathname depends on OS: Unix, Windows, etc.
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# Pathname library works with pathnames of local OS.
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# However non-Unix pathnames are supported experimentally.
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#
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# It does not represent the file itself.
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# A Pathname can be relative or absolute. It's not until you try to
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# reference the file that it even matters whether the file exists or not.
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#
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# Pathname is immutable. It has no method for destructive update.
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#
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# The value of this class is to manipulate file path information in a neater
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# way than standard Ruby provides. The examples below demonstrate the
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# difference. *All* functionality from File, FileTest, and some from Dir and
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# FileUtils is included, in an unsurprising way. It is essentially a facade for
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# all of these, and more.
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#
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# == Examples
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#
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# === Example 1: Using Pathname
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#
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# require 'pathname'
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# pn = Pathname.new("/usr/bin/ruby")
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# size = pn.size # 27662
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# isdir = pn.directory? # false
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# dir = pn.dirname # Pathname:/usr/bin
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# base = pn.basename # Pathname:ruby
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# dir, base = pn.split # [Pathname:/usr/bin, Pathname:ruby]
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# data = pn.read
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# pn.open { |f| _ }
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# pn.each_line { |line| _ }
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#
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# === Example 2: Using standard Ruby
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#
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# pn = "/usr/bin/ruby"
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# size = File.size(pn) # 27662
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# isdir = File.directory?(pn) # false
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# dir = File.dirname(pn) # "/usr/bin"
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# base = File.basename(pn) # "ruby"
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# dir, base = File.split(pn) # ["/usr/bin", "ruby"]
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# data = File.read(pn)
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# File.open(pn) { |f| _ }
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# File.foreach(pn) { |line| _ }
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#
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# === Example 3: Special features
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#
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# p1 = Pathname.new("/usr/lib") # Pathname:/usr/lib
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# p2 = p1 + "ruby/1.8" # Pathname:/usr/lib/ruby/1.8
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# p3 = p1.parent # Pathname:/usr
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# p4 = p2.relative_path_from(p3) # Pathname:lib/ruby/1.8
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# pwd = Pathname.pwd # Pathname:/home/gavin
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# pwd.absolute? # true
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# p5 = Pathname.new "." # Pathname:.
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# p5 = p5 + "music/../articles" # Pathname:music/../articles
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# p5.cleanpath # Pathname:articles
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# p5.realpath # Pathname:/home/gavin/articles
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# p5.children # [Pathname:/home/gavin/articles/linux, ...]
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#
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# == Breakdown of functionality
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# Pathname represents a path to a file on a filesystem. It can be relative or
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# absolute. It exists to provide a more instance-oriented approach to managing
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# paths than the class-level methods on File, FileTest, Dir, and Find.
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#
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# === Core methods
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#
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# These methods are effectively manipulating a String, because that's
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# all a path is. Except for #mountpoint?, #children, #each_child,
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# #realdirpath and #realpath, they don't access the filesystem.
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#
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# - +
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# - #join
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# - #parent
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# - #root?
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# - #absolute?
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# - #relative?
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# - #relative_path_from
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# - #each_filename
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# - #cleanpath
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# - #realpath
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# - #realdirpath
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# - #children
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# - #each_child
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# - #mountpoint?
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#
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# === File status predicate methods
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#
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# These methods are a facade for FileTest:
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# - #blockdev?
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# - #chardev?
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# - #directory?
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# - #executable?
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# - #executable_real?
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# - #exist?
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# - #file?
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# - #grpowned?
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# - #owned?
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# - #pipe?
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# - #readable?
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# - #world_readable?
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# - #readable_real?
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# - #setgid?
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# - #setuid?
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# - #size
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# - #size?
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# - #socket?
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# - #sticky?
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# - #symlink?
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# - #writable?
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# - #world_writable?
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# - #writable_real?
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# - #zero?
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#
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# === File property and manipulation methods
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#
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# These methods are a facade for File:
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# - #atime
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# - #ctime
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# - #mtime
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# - #chmod(mode)
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# - #lchmod(mode)
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# - #chown(owner, group)
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# - #lchown(owner, group)
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# - #fnmatch(pattern, *args)
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# - #fnmatch?(pattern, *args)
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# - #ftype
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# - #make_link(old)
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# - #open(*args, &block)
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# - #readlink
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# - #rename(to)
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# - #stat
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# - #lstat
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# - #make_symlink(old)
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# - #truncate(length)
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# - #utime(atime, mtime)
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# - #basename(*args)
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# - #dirname
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# - #extname
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# - #expand_path(*args)
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# - #split
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#
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# === Directory methods
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#
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# These methods are a facade for Dir:
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# - Pathname.glob(*args)
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# - Pathname.getwd / Pathname.pwd
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# - #rmdir
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# - #entries
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# - #each_entry(&block)
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# - #mkdir(*args)
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# - #opendir(*args)
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#
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# === IO
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#
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# These methods are a facade for IO:
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# - #each_line(*args, &block)
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# - #read(*args)
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# - #binread(*args)
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# - #readlines(*args)
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# - #sysopen(*args)
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#
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# === Utilities
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#
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# These methods are a mixture of Find, FileUtils, and others:
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# - #find(&block)
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# - #mkpath
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# - #rmtree
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# - #unlink / #delete
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#
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#
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# == Method documentation
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#
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# As the above section shows, most of the methods in Pathname are facades. The
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# documentation for these methods generally just says, for instance, "See
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# FileTest.writable?", as you should be familiar with the original method
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# anyway, and its documentation (e.g. through +ri+) will contain more
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# information. In some cases, a brief description will follow.
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#
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class Pathname
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# :stopdoc:
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if RUBY_VERSION < "1.9"
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TO_PATH = :to_str
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else
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# to_path is implemented so Pathname objects are usable with File.open, etc.
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TO_PATH = :to_path
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end
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SAME_PATHS = if File::FNM_SYSCASE.nonzero?
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proc {|a, b| a.casecmp(b).zero?}
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else
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proc {|a, b| a == b}
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end
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# :startdoc:
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class Pathname < String
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SYMLOOP_MAX = 8 # deepest symlink traversal
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ROOT = '/'.freeze
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DOT = '.'.freeze
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DOT_DOT = '..'.freeze
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#
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# Create a Pathname object from the given String (or String-like object).
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# If +path+ contains a NUL character (<tt>\0</tt>), an ArgumentError is raised.
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# Creates a new Pathname. Any path with a null is rejected.
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#
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def initialize(path)
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path = path.__send__(TO_PATH) if path.respond_to? TO_PATH
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@path = path.dup
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if /\0/ =~ @path
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raise ArgumentError, "pathname contains \\0: #{@path.inspect}"
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if path =~ %r{\0}
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raise ArgumentError, "path cannot contain ASCII NULLs"
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end
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self.taint if @path.tainted?
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super(path)
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end
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def freeze() super; @path.freeze; self end
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def taint() super; @path.taint; self end
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def untaint() super; @path.untaint; self end
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#
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# Compare this pathname with +other+. The comparison is string-based.
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# Be aware that two different paths (<tt>foo.txt</tt> and <tt>./foo.txt</tt>)
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# can refer to the same file.
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# Compares pathnames, case-sensitively. Sorts directories higher than other
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# files named similarly.
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#
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def ==(other)
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return false unless Pathname === other
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other.to_s == @path
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end
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alias === ==
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alias eql? ==
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# Provides for comparing pathnames, case-sensitively.
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def <=>(other)
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return nil unless Pathname === other
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@path.tr('/', "\0") <=> other.to_s.tr('/', "\0")
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end
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def hash # :nodoc:
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@path.hash
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end
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# Return the path as a String.
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def to_s
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@path.dup
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end
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# to_path is implemented so Pathname objects are usable with File.open, etc.
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alias_method TO_PATH, :to_s
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def inspect # :nodoc:
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"#<#{self.class}:#{@path}>"
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end
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# Return a pathname which is substituted by String#sub.
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def sub(pattern, *rest, &block)
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if block
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path = @path.sub(pattern, *rest) {|*args|
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begin
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old = Thread.current[:pathname_sub_matchdata]
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Thread.current[:pathname_sub_matchdata] = $~
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eval("$~ = Thread.current[:pathname_sub_matchdata]", block.binding)
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ensure
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Thread.current[:pathname_sub_matchdata] = old
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end
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yield(*args)
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}
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else
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path = @path.sub(pattern, *rest)
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end
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self.class.new(path)
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end
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if File::ALT_SEPARATOR
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SEPARATOR_LIST = "#{Regexp.quote File::ALT_SEPARATOR}#{Regexp.quote File::SEPARATOR}"
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SEPARATOR_PAT = /[#{SEPARATOR_LIST}]/
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else
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SEPARATOR_LIST = "#{Regexp.quote File::SEPARATOR}"
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SEPARATOR_PAT = /#{Regexp.quote File::SEPARATOR}/
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end
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# Return a pathname which the extension of the basename is substituted by
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# <i>repl</i>.
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#
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# If self has no extension part, <i>repl</i> is appended.
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def sub_ext(repl)
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ext = File.extname(@path)
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self.class.new(@path.chomp(ext) + repl)
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end
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# chop_basename(path) -> [pre-basename, basename] or nil
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def chop_basename(path)
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base = File.basename(path)
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if /\A#{SEPARATOR_PAT}?\z/o =~ base
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return nil
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else
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return path[0, path.rindex(base)], base
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end
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end
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private :chop_basename
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# split_names(path) -> prefix, [name, ...]
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def split_names(path)
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names = []
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while r = chop_basename(path)
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path, basename = r
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names.unshift basename
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end
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return path, names
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end
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private :split_names
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def prepend_prefix(prefix, relpath)
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if relpath.empty?
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File.dirname(prefix)
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elsif /#{SEPARATOR_PAT}/o =~ prefix
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prefix = File.dirname(prefix)
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prefix = File.join(prefix, "") if File.basename(prefix + 'a') != 'a'
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prefix + relpath
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else
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prefix + relpath
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end
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self.tr('/', "\0").to_s <=> other.to_str.tr('/', "\0")
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rescue NoMethodError # doesn't respond to to_str
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nil
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end
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private :prepend_prefix
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# Returns clean pathname of +self+ with consecutive slashes and useless dots
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# removed. The filesystem is not accessed.
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#
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# If +consider_symlink+ is +true+, then a more conservative algorithm is used
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# to avoid breaking symbolic linkages. This may retain more <tt>..</tt>
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# entries than absolutely necessary, but without accessing the filesystem,
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# this can't be avoided. See #realpath.
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# Compares two pathnames for equality. Considers pathnames equal if they
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# both point to the same location, and are both absolute or both relative.
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#
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def cleanpath(consider_symlink=false)
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if consider_symlink
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cleanpath_conservative
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else
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cleanpath_aggressive
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end
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def ==(other)
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left = self.cleanpath.tr('/', "\0").to_s
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right = other.to_str.to_path.cleanpath.tr('/', "\0").to_s
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left == right
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rescue NoMethodError # doesn't implement to_str
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false
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end
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#
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# Clean the path simply by resolving and removing excess "." and ".." entries.
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# Nothing more, nothing less.
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# Appends a component of a path to self. Returns a Pathname to the combined
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# path. Cleans any redundant components of the path.
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#
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def cleanpath_aggressive
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path = @path
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names = []
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pre = path
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while r = chop_basename(pre)
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pre, base = r
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case base
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when '.'
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when '..'
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names.unshift base
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else
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if names[0] == '..'
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names.shift
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else
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names.unshift base
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end
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end
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end
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if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
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names.shift while names[0] == '..'
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end
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self.class.new(prepend_prefix(pre, File.join(*names)))
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end
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private :cleanpath_aggressive
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# has_trailing_separator?(path) -> bool
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def has_trailing_separator?(path)
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if r = chop_basename(path)
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pre, basename = r
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pre.length + basename.length < path.length
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else
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false
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end
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def +(path)
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dup << path
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end
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private :has_trailing_separator?
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# add_trailing_separator(path) -> path
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def add_trailing_separator(path)
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if File.basename(path + 'a') == 'a'
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path
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else
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File.join(path, "") # xxx: Is File.join is appropriate to add separator?
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end
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end
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private :add_trailing_separator
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def del_trailing_separator(path)
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if r = chop_basename(path)
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pre, basename = r
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pre + basename
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elsif /#{SEPARATOR_PAT}+\z/o =~ path
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$` + File.dirname(path)[/#{SEPARATOR_PAT}*\z/o]
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else
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path
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end
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end
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private :del_trailing_separator
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def cleanpath_conservative
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path = @path
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names = []
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pre = path
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while r = chop_basename(pre)
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pre, base = r
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names.unshift base if base != '.'
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end
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if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
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names.shift while names[0] == '..'
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end
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if names.empty?
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self.class.new(File.dirname(pre))
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else
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if names.last != '..' && File.basename(path) == '.'
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names << '.'
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end
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result = prepend_prefix(pre, File.join(*names))
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if /\A(?:\.|\.\.)\z/ !~ names.last && has_trailing_separator?(path)
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self.class.new(add_trailing_separator(result))
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else
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self.class.new(result)
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end
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end
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end
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private :cleanpath_conservative
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#
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# Returns the real (absolute) pathname of +self+ in the actual
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# filesystem not containing symlinks or useless dots.
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# Appends (destructively) a component of a path to self. Replaces the
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# contents of the current Pathname with the new, combined path. Cleans any
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# redundant components of the path.
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#
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# All components of the pathname must exist when this method is
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# called.
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#
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def realpath(basedir=nil)
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self.class.new(File.realpath(@path, basedir))
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def <<(path)
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replace( join(path).cleanpath! )
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end
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#
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# Returns the real (absolute) pathname of +self+ in the actual filesystem.
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# The real pathname doesn't contain symlinks or useless dots.
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#
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# The last component of the real pathname can be nonexistent.
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# Returns true if this is an absolute path.
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#
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def realdirpath(basedir=nil)
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self.class.new(File.realdirpath(@path, basedir))
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def absolute?
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self[0, 1].to_s == ROOT
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end
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# #parent returns the parent directory.
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#
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# This is same as <tt>self + '..'</tt>.
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def parent
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self + '..'
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end
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# #mountpoint? returns +true+ if <tt>self</tt> points to a mountpoint.
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def mountpoint?
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begin
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stat1 = self.lstat
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stat2 = self.parent.lstat
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stat1.dev == stat2.dev && stat1.ino == stat2.ino ||
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stat1.dev != stat2.dev
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rescue Errno::ENOENT
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false
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end
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end
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# Yields to each component of the path, going up to the root.
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#
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# #root? is a predicate for root directories. I.e. it returns +true+ if the
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# pathname consists of consecutive slashes.
|
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# Pathname.new('/path/to/some/file').ascend {|path| p path }
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# "/path/to/some/file"
|
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# "/path/to/some"
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# "/path/to"
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# "/path"
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# "/"
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#
|
||
# It doesn't access actual filesystem. So it may return +false+ for some
|
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# pathnames which points to roots such as <tt>/usr/..</tt>.
|
||
# Pathname.new('a/relative/path').ascend {|path| p path }
|
||
# "a/relative/path"
|
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# "a/relative"
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# "a"
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#
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def root?
|
||
!!(chop_basename(@path) == nil && /#{SEPARATOR_PAT}/o =~ @path)
|
||
end
|
||
# Predicate method for testing whether a path is absolute.
|
||
# It returns +true+ if the pathname begins with a slash.
|
||
def absolute?
|
||
!relative?
|
||
# Does not actually access the filesystem.
|
||
#
|
||
def ascend
|
||
parts = to_a
|
||
parts.length.downto(1) do |i|
|
||
yield self.class.join(parts[0, i])
|
||
end
|
||
end
|
||
# The opposite of #absolute?
|
||
def relative?
|
||
path = @path
|
||
while r = chop_basename(path)
|
||
path, basename = r
|
||
|
||
#
|
||
# Returns all children of this path. "." and ".." are not included, since
|
||
# they aren't under the current path.
|
||
#
|
||
def children
|
||
entries[2..-1]
|
||
end
|
||
|
||
#
|
||
# Cleans the path by removing consecutive slashes, and useless dots.
|
||
# Replaces the contents of the current Pathname.
|
||
#
|
||
def cleanpath!
|
||
parts = to_a
|
||
final = []
|
||
|
||
parts.each do |part|
|
||
case part
|
||
when DOT then next
|
||
when DOT_DOT then
|
||
case final.last
|
||
when ROOT then next
|
||
when DOT_DOT then final.push(DOT_DOT)
|
||
when nil then final.push(DOT_DOT)
|
||
else final.pop
|
||
end
|
||
else final.push(part)
|
||
end
|
||
end
|
||
path == ''
|
||
|
||
replace(final.empty? ? DOT : self.class.join(*final))
|
||
end
|
||
|
||
#
|
||
# Iterates over each component of the path.
|
||
# Cleans the path by removing consecutive slashes, and useless dots.
|
||
#
|
||
# Pathname.new("/usr/bin/ruby").each_filename {|filename| ... }
|
||
# # yields "usr", "bin", and "ruby".
|
||
#
|
||
def each_filename # :yield: filename
|
||
return to_enum(__method__) unless block_given?
|
||
prefix, names = split_names(@path)
|
||
names.each {|filename| yield filename }
|
||
nil
|
||
def cleanpath
|
||
dup.cleanpath!
|
||
end
|
||
# Iterates over and yields a new Pathname object
|
||
# for each element in the given path in descending order.
|
||
|
||
#
|
||
# Pathname.new('/path/to/some/file.rb').descend {|v| p v}
|
||
# #<Pathname:/>
|
||
# #<Pathname:/path>
|
||
# #<Pathname:/path/to>
|
||
# #<Pathname:/path/to/some>
|
||
# #<Pathname:/path/to/some/file.rb>
|
||
# Yields to each component of the path, going down from the root.
|
||
#
|
||
# Pathname.new('path/to/some/file.rb').descend {|v| p v}
|
||
# #<Pathname:path>
|
||
# #<Pathname:path/to>
|
||
# #<Pathname:path/to/some>
|
||
# #<Pathname:path/to/some/file.rb>
|
||
# Pathname.new('/path/to/some/file').ascend {|path| p path }
|
||
# "/"
|
||
# "/path"
|
||
# "/path/to"
|
||
# "/path/to/some"
|
||
# "/path/to/some/file"
|
||
#
|
||
# It doesn't access actual filesystem.
|
||
# Pathname.new('a/relative/path').ascend {|path| p path }
|
||
# "a"
|
||
# "a/relative"
|
||
# "a/relative/path"
|
||
#
|
||
# This method is available since 1.8.5.
|
||
# Does not actually access the filesystem.
|
||
#
|
||
def descend
|
||
vs = []
|
||
ascend {|v| vs << v }
|
||
vs.reverse_each {|v| yield v }
|
||
nil
|
||
parts = to_a
|
||
1.upto(parts.length) do |i|
|
||
yield self.class.join(parts[0, i])
|
||
end
|
||
end
|
||
# Iterates over and yields a new Pathname object
|
||
# for each element in the given path in ascending order.
|
||
|
||
#
|
||
# Pathname.new('/path/to/some/file.rb').ascend {|v| p v}
|
||
# #<Pathname:/path/to/some/file.rb>
|
||
# #<Pathname:/path/to/some>
|
||
# #<Pathname:/path/to>
|
||
# #<Pathname:/path>
|
||
# #<Pathname:/>
|
||
# Returns true if this path is simply a '.'.
|
||
#
|
||
# Pathname.new('path/to/some/file.rb').ascend {|v| p v}
|
||
# #<Pathname:path/to/some/file.rb>
|
||
# #<Pathname:path/to/some>
|
||
# #<Pathname:path/to>
|
||
# #<Pathname:path>
|
||
#
|
||
# It doesn't access actual filesystem.
|
||
def dot?
|
||
self == DOT
|
||
end
|
||
|
||
#
|
||
# This method is available since 1.8.5.
|
||
# Returns true if this path is simply a '..'.
|
||
#
|
||
def ascend
|
||
path = @path
|
||
yield self
|
||
while r = chop_basename(path)
|
||
path, name = r
|
||
break if path.empty?
|
||
yield self.class.new(del_trailing_separator(path))
|
||
end
|
||
def dot_dot?
|
||
self == DOT_DOT
|
||
end
|
||
|
||
#
|
||
# Pathname#+ appends a pathname fragment to this one to produce a new Pathname
|
||
# object.
|
||
# Iterates over every component of the path.
|
||
#
|
||
# p1 = Pathname.new("/usr") # Pathname:/usr
|
||
# p2 = p1 + "bin/ruby" # Pathname:/usr/bin/ruby
|
||
# p3 = p1 + "/etc/passwd" # Pathname:/etc/passwd
|
||
# Pathname.new('/path/to/some/file').ascend {|path| p path }
|
||
# "/"
|
||
# "path"
|
||
# "to"
|
||
# "some"
|
||
# "file"
|
||
#
|
||
# This method doesn't access the file system; it is pure string manipulation.
|
||
# Pathname.new('a/relative/path').each_filename {|part| p part }
|
||
# "a"
|
||
# "relative"
|
||
# "path"
|
||
#
|
||
def +(other)
|
||
other = Pathname.new(other) unless Pathname === other
|
||
Pathname.new(plus(@path, other.to_s))
|
||
end
|
||
def plus(path1, path2) # -> path
|
||
prefix2 = path2
|
||
index_list2 = []
|
||
basename_list2 = []
|
||
while r2 = chop_basename(prefix2)
|
||
prefix2, basename2 = r2
|
||
index_list2.unshift prefix2.length
|
||
basename_list2.unshift basename2
|
||
end
|
||
return path2 if prefix2 != ''
|
||
prefix1 = path1
|
||
while true
|
||
while !basename_list2.empty? && basename_list2.first == '.'
|
||
index_list2.shift
|
||
basename_list2.shift
|
||
end
|
||
break unless r1 = chop_basename(prefix1)
|
||
prefix1, basename1 = r1
|
||
next if basename1 == '.'
|
||
if basename1 == '..' || basename_list2.empty? || basename_list2.first != '..'
|
||
prefix1 = prefix1 + basename1
|
||
break
|
||
end
|
||
index_list2.shift
|
||
basename_list2.shift
|
||
end
|
||
r1 = chop_basename(prefix1)
|
||
if !r1 && /#{SEPARATOR_PAT}/o =~ File.basename(prefix1)
|
||
while !basename_list2.empty? && basename_list2.first == '..'
|
||
index_list2.shift
|
||
basename_list2.shift
|
||
end
|
||
end
|
||
if !basename_list2.empty?
|
||
suffix2 = path2[index_list2.first..-1]
|
||
r1 ? File.join(prefix1, suffix2) : prefix1 + suffix2
|
||
else
|
||
r1 ? prefix1 : File.dirname(prefix1)
|
||
end
|
||
def each_filename(&blk)
|
||
to_a.each(&blk)
|
||
end
|
||
private :plus
|
||
|
||
#
|
||
# Pathname#join joins pathnames.
|
||
# Returns true if the path is a mountpoint.
|
||
#
|
||
# <tt>path0.join(path1, ..., pathN)</tt> is the same as
|
||
# <tt>path0 + path1 + ... + pathN</tt>.
|
||
#
|
||
def join(*args)
|
||
args.unshift self
|
||
result = args.pop
|
||
result = Pathname.new(result) unless Pathname === result
|
||
return result if result.absolute?
|
||
args.reverse_each {|arg|
|
||
arg = Pathname.new(arg) unless Pathname === arg
|
||
result = arg + result
|
||
return result if result.absolute?
|
||
}
|
||
result
|
||
def mountpoint?
|
||
stat1 = self.lstat
|
||
stat2 = self.parent.lstat
|
||
|
||
stat1.dev != stat2.dev || stat1.ino == stat2.ino
|
||
rescue Errno::ENOENT
|
||
false
|
||
end
|
||
#
|
||
# Returns the children of the directory (files and subdirectories, not
|
||
# recursive) as an array of Pathname objects. By default, the returned
|
||
# pathnames will have enough information to access the files. If you set
|
||
# +with_directory+ to +false+, then the returned pathnames will contain the
|
||
# filename only.
|
||
#
|
||
# For example:
|
||
# pn = Pathname("/usr/lib/ruby/1.8")
|
||
# pn.children
|
||
# # -> [ Pathname:/usr/lib/ruby/1.8/English.rb,
|
||
# Pathname:/usr/lib/ruby/1.8/Env.rb,
|
||
# Pathname:/usr/lib/ruby/1.8/abbrev.rb, ... ]
|
||
# pn.children(false)
|
||
# # -> [ Pathname:English.rb, Pathname:Env.rb, Pathname:abbrev.rb, ... ]
|
||
#
|
||
# Note that the result never contain the entries <tt>.</tt> and <tt>..</tt> in
|
||
# the directory because they are not children.
|
||
|
||
#
|
||
# This method has existed since 1.8.1.
|
||
# Returns a path to the parent directory. Simply appends a "..".
|
||
#
|
||
def children(with_directory=true)
|
||
with_directory = false if @path == '.'
|
||
result = []
|
||
Dir.foreach(@path) {|e|
|
||
next if e == '.' || e == '..'
|
||
if with_directory
|
||
result << self.class.new(File.join(@path, e))
|
||
else
|
||
result << self.class.new(e)
|
||
end
|
||
}
|
||
result
|
||
def parent
|
||
self + '..'
|
||
end
|
||
# Iterates over the children of the directory
|
||
# (files and subdirectories, not recursive).
|
||
# It yields Pathname object for each child.
|
||
# By default, the yielded pathnames will have enough information to access the files.
|
||
# If you set +with_directory+ to +false+, then the returned pathnames will contain the filename only.
|
||
#
|
||
# Pathname("/usr/local").each_child {|f| p f }
|
||
# #=> #<Pathname:/usr/local/share>
|
||
# # #<Pathname:/usr/local/bin>
|
||
# # #<Pathname:/usr/local/games>
|
||
# # #<Pathname:/usr/local/lib>
|
||
# # #<Pathname:/usr/local/include>
|
||
# # #<Pathname:/usr/local/sbin>
|
||
# # #<Pathname:/usr/local/src>
|
||
# # #<Pathname:/usr/local/man>
|
||
|
||
#
|
||
# Pathname("/usr/local").each_child(false) {|f| p f }
|
||
# #=> #<Pathname:share>
|
||
# # #<Pathname:bin>
|
||
# # #<Pathname:games>
|
||
# # #<Pathname:lib>
|
||
# # #<Pathname:include>
|
||
# # #<Pathname:sbin>
|
||
# # #<Pathname:src>
|
||
# # #<Pathname:man>
|
||
# Resolves a path to locate a real location on the filesystem. Resolves
|
||
# symlinks up to a deptho of SYMLOOP_MAX.
|
||
#
|
||
def each_child(with_directory=true, &b)
|
||
children(with_directory).each(&b)
|
||
def realpath
|
||
path = self
|
||
|
||
SYMLOOP_MAX.times do
|
||
link = path.readlink
|
||
link = path.dirname + link if link.relative?
|
||
path = link
|
||
end
|
||
|
||
raise Errno::ELOOP, self
|
||
rescue Errno::EINVAL
|
||
path.expand_path
|
||
end
|
||
|
||
#
|
||
# #relative_path_from returns a relative path from the argument to the
|
||
# receiver. If +self+ is absolute, the argument must be absolute too. If
|
||
# +self+ is relative, the argument must be relative too.
|
||
# Returns true if this is a relative path.
|
||
#
|
||
# #relative_path_from doesn't access the filesystem. It assumes no symlinks.
|
||
def relative?
|
||
!absolute?
|
||
end
|
||
|
||
#
|
||
# ArgumentError is raised when it cannot find a relative path.
|
||
# Returns this path as a relative location from +base+. The path and +base+
|
||
# must both be relative or both be absolute. An ArgumentError is raised if
|
||
# a relative path can't be generated between the two locations.
|
||
#
|
||
# This method has existed since 1.8.1.
|
||
# Does not access the filesystem.
|
||
#
|
||
def relative_path_from(base_directory)
|
||
dest_directory = self.cleanpath.to_s
|
||
base_directory = base_directory.cleanpath.to_s
|
||
dest_prefix = dest_directory
|
||
dest_names = []
|
||
while r = chop_basename(dest_prefix)
|
||
dest_prefix, basename = r
|
||
dest_names.unshift basename if basename != '.'
|
||
def relative_path_from(base)
|
||
base = base.to_path
|
||
|
||
# both must be relative, or both must be absolute
|
||
if self.absolute? != base.absolute?
|
||
raise ArgumentError, 'no relative path between a relative and absolute'
|
||
end
|
||
base_prefix = base_directory
|
||
base_names = []
|
||
while r = chop_basename(base_prefix)
|
||
base_prefix, basename = r
|
||
base_names.unshift basename if basename != '.'
|
||
|
||
return self if base.dot?
|
||
return DOT.to_path if self == base
|
||
|
||
base = base.cleanpath.to_a
|
||
dest = self.cleanpath.to_a
|
||
|
||
while !dest.empty? && !base.empty? && dest[0] == base[0]
|
||
base.shift
|
||
dest.shift
|
||
end
|
||
unless SAME_PATHS[dest_prefix, base_prefix]
|
||
raise ArgumentError, "different prefix: #{dest_prefix.inspect} and #{base_directory.inspect}"
|
||
end
|
||
while !dest_names.empty? &&
|
||
!base_names.empty? &&
|
||
SAME_PATHS[dest_names.first, base_names.first]
|
||
dest_names.shift
|
||
base_names.shift
|
||
end
|
||
if base_names.include? '..'
|
||
raise ArgumentError, "base_directory has ..: #{base_directory.inspect}"
|
||
end
|
||
base_names.fill('..')
|
||
relpath_names = base_names + dest_names
|
||
if relpath_names.empty?
|
||
Pathname.new('.')
|
||
else
|
||
Pathname.new(File.join(*relpath_names))
|
||
|
||
base.shift if base[0] == DOT
|
||
dest.shift if dest[0] == DOT
|
||
|
||
if base.include?(DOT_DOT)
|
||
raise ArgumentError, "base directory may not contain '#{DOT_DOT}'"
|
||
end
|
||
|
||
path = base.fill(DOT_DOT) + dest
|
||
path = self.class.join(*path)
|
||
path = DOT.to_path if path.empty?
|
||
|
||
path
|
||
end
|
||
end
|
||
class Pathname # * IO *
|
||
|
||
#
|
||
# #each_line iterates over the line in the file. It yields a String object
|
||
# for each line.
|
||
# Returns true if this path points to the root of the filesystem.
|
||
#
|
||
# This method has existed since 1.8.1.
|
||
def root?
|
||
!!(self =~ %r{^#{ROOT}+$})
|
||
end
|
||
|
||
#
|
||
def each_line(*args, &block) # :yield: line
|
||
IO.foreach(@path, *args, &block)
|
||
# Splits the path into an array of its components.
|
||
#
|
||
def to_a
|
||
array = to_s.split(File::SEPARATOR)
|
||
array.delete('')
|
||
array.insert(0, ROOT) if absolute?
|
||
array
|
||
end
|
||
# See <tt>IO.read</tt>. Returns all data from the file, or the first +N+ bytes
|
||
# if specified.
|
||
def read(*args) IO.read(@path, *args) end
|
||
# See <tt>IO.binread</tt>. Returns all the bytes from the file, or the first +N+
|
||
# if specified.
|
||
def binread(*args) IO.binread(@path, *args) end
|
||
# See <tt>IO.readlines</tt>. Returns all the lines from the file.
|
||
def readlines(*args) IO.readlines(@path, *args) end
|
||
# See <tt>IO.sysopen</tt>.
|
||
def sysopen(*args) IO.sysopen(@path, *args) end
|
||
end
|
||
class Pathname # * File *
|
||
# See <tt>File.atime</tt>. Returns last access time.
|
||
def atime() File.atime(@path) end
|
||
# See <tt>File.ctime</tt>. Returns last (directory entry, not file) change time.
|
||
def ctime() File.ctime(@path) end
|
||
# See <tt>File.mtime</tt>. Returns last modification time.
|
||
def mtime() File.mtime(@path) end
|
||
# See <tt>File.chmod</tt>. Changes permissions.
|
||
def chmod(mode) File.chmod(mode, @path) end
|
||
# See <tt>File.lchmod</tt>.
|
||
def lchmod(mode) File.lchmod(mode, @path) end
|
||
# See <tt>File.chown</tt>. Change owner and group of file.
|
||
def chown(owner, group) File.chown(owner, group, @path) end
|
||
# See <tt>File.lchown</tt>.
|
||
def lchown(owner, group) File.lchown(owner, group, @path) end
|
||
# See <tt>File.fnmatch</tt>. Return +true+ if the receiver matches the given
|
||
# pattern.
|
||
def fnmatch(pattern, *args) File.fnmatch(pattern, @path, *args) end
|
||
# See <tt>File.fnmatch?</tt> (same as #fnmatch).
|
||
def fnmatch?(pattern, *args) File.fnmatch?(pattern, @path, *args) end
|
||
# See <tt>File.ftype</tt>. Returns "type" of file ("file", "directory",
|
||
# etc).
|
||
def ftype() File.ftype(@path) end
|
||
# See <tt>File.link</tt>. Creates a hard link.
|
||
def make_link(old) File.link(old, @path) end
|
||
# See <tt>File.open</tt>. Opens the file for reading or writing.
|
||
def open(*args, &block) # :yield: file
|
||
File.open(@path, *args, &block)
|
||
|
||
#
|
||
# Returns self.
|
||
#
|
||
def to_path
|
||
self
|
||
end
|
||
|
||
#
|
||
# Unlinks the file or directory at the path.
|
||
#
|
||
def unlink
|
||
Dir.unlink(self)
|
||
true
|
||
rescue Errno::ENOTDIR
|
||
File.unlink(self)
|
||
true
|
||
end
|
||
# See <tt>File.readlink</tt>. Read symbolic link.
|
||
def readlink() self.class.new(File.readlink(@path)) end
|
||
# See <tt>File.rename</tt>. Rename the file.
|
||
def rename(to) File.rename(@path, to) end
|
||
# See <tt>File.stat</tt>. Returns a <tt>File::Stat</tt> object.
|
||
def stat() File.stat(@path) end
|
||
# See <tt>File.lstat</tt>.
|
||
def lstat() File.lstat(@path) end
|
||
# See <tt>File.symlink</tt>. Creates a symbolic link.
|
||
def make_symlink(old) File.symlink(old, @path) end
|
||
# See <tt>File.truncate</tt>. Truncate the file to +length+ bytes.
|
||
def truncate(length) File.truncate(@path, length) end
|
||
# See <tt>File.utime</tt>. Update the access and modification times.
|
||
def utime(atime, mtime) File.utime(atime, mtime, @path) end
|
||
# See <tt>File.basename</tt>. Returns the last component of the path.
|
||
def basename(*args) self.class.new(File.basename(@path, *args)) end
|
||
# See <tt>File.dirname</tt>. Returns all but the last component of the path.
|
||
def dirname() self.class.new(File.dirname(@path)) end
|
||
# See <tt>File.extname</tt>. Returns the file's extension.
|
||
def extname() File.extname(@path) end
|
||
# See <tt>File.expand_path</tt>.
|
||
def expand_path(*args) self.class.new(File.expand_path(@path, *args)) end
|
||
# See <tt>File.split</tt>. Returns the #dirname and the #basename in an
|
||
# Array.
|
||
def split() File.split(@path).map {|f| self.class.new(f) } end
|
||
end
|
||
class Pathname # * FileTest *
|
||
# See <tt>FileTest.blockdev?</tt>.
|
||
def blockdev?() FileTest.blockdev?(@path) end
|
||
# See <tt>FileTest.chardev?</tt>.
|
||
def chardev?() FileTest.chardev?(@path) end
|
||
# See <tt>FileTest.executable?</tt>.
|
||
def executable?() FileTest.executable?(@path) end
|
||
# See <tt>FileTest.executable_real?</tt>.
|
||
def executable_real?() FileTest.executable_real?(@path) end
|
||
# See <tt>FileTest.exist?</tt>.
|
||
def exist?() FileTest.exist?(@path) end
|
||
# See <tt>FileTest.grpowned?</tt>.
|
||
def grpowned?() FileTest.grpowned?(@path) end
|
||
# See <tt>FileTest.directory?</tt>.
|
||
def directory?() FileTest.directory?(@path) end
|
||
# See <tt>FileTest.file?</tt>.
|
||
def file?() FileTest.file?(@path) end
|
||
# See <tt>FileTest.pipe?</tt>.
|
||
def pipe?() FileTest.pipe?(@path) end
|
||
# See <tt>FileTest.socket?</tt>.
|
||
def socket?() FileTest.socket?(@path) end
|
||
# See <tt>FileTest.owned?</tt>.
|
||
def owned?() FileTest.owned?(@path) end
|
||
# See <tt>FileTest.readable?</tt>.
|
||
def readable?() FileTest.readable?(@path) end
|
||
# See <tt>FileTest.world_readable?</tt>.
|
||
def world_readable?() FileTest.world_readable?(@path) end
|
||
# See <tt>FileTest.readable_real?</tt>.
|
||
def readable_real?() FileTest.readable_real?(@path) end
|
||
# See <tt>FileTest.setuid?</tt>.
|
||
def setuid?() FileTest.setuid?(@path) end
|
||
# See <tt>FileTest.setgid?</tt>.
|
||
def setgid?() FileTest.setgid?(@path) end
|
||
# See <tt>FileTest.size</tt>.
|
||
def size() FileTest.size(@path) end
|
||
# See <tt>FileTest.size?</tt>.
|
||
def size?() FileTest.size?(@path) end
|
||
# See <tt>FileTest.sticky?</tt>.
|
||
def sticky?() FileTest.sticky?(@path) end
|
||
# See <tt>FileTest.symlink?</tt>.
|
||
def symlink?() FileTest.symlink?(@path) end
|
||
# See <tt>FileTest.writable?</tt>.
|
||
def writable?() FileTest.writable?(@path) end
|
||
# See <tt>FileTest.world_writable?</tt>.
|
||
def world_writable?() FileTest.world_writable?(@path) end
|
||
# See <tt>FileTest.writable_real?</tt>.
|
||
def writable_real?() FileTest.writable_real?(@path) end
|
||
# See <tt>FileTest.zero?</tt>.
|
||
def zero?() FileTest.zero?(@path) end
|
||
end
|
||
class Pathname # * Dir *
|
||
# See <tt>Dir.glob</tt>. Returns or yields Pathname objects.
|
||
def Pathname.glob(*args) # :yield: pathname
|
||
class Pathname
|
||
# See Dir::[]
|
||
def self.[](pattern); Dir[pattern].map! {|d| d.to_path }; end
|
||
|
||
# See Dir::pwd
|
||
def self.pwd; Dir.pwd.to_path; end
|
||
|
||
# See Dir::entries
|
||
def entries; Dir.entries(self).map! {|e| e.to_path }; end
|
||
|
||
# See Dir::mkdir
|
||
def mkdir(mode = 0777); Dir.mkdir(self, mode); end
|
||
|
||
# See Dir::open
|
||
def opendir(&blk); Dir.open(self, &blk); end
|
||
|
||
# See Dir::rmdir
|
||
def rmdir; Dir.rmdir(self); end
|
||
|
||
# See Dir::glob
|
||
def self.glob(pattern, flags = 0)
|
||
dirs = Dir.glob(pattern, flags)
|
||
dirs.map! {|path| path.to_path }
|
||
|
||
if block_given?
|
||
Dir.glob(*args) {|f| yield self.new(f) }
|
||
dirs.each {|dir| yield dir }
|
||
nil
|
||
else
|
||
Dir.glob(*args).map {|f| self.new(f) }
|
||
dirs
|
||
end
|
||
end
|
||
# See <tt>Dir.getwd</tt>. Returns the current working directory as a Pathname.
|
||
def Pathname.getwd() self.new(Dir.getwd) end
|
||
class << self; alias pwd getwd end
|
||
# Return the entries (files and subdirectories) in the directory, each as a
|
||
# Pathname object.
|
||
def entries() Dir.entries(@path).map {|f| self.class.new(f) } end
|
||
# Iterates over the entries (files and subdirectories) in the directory. It
|
||
# yields a Pathname object for each entry.
|
||
#
|
||
# This method has existed since 1.8.1.
|
||
def each_entry(&block) # :yield: pathname
|
||
Dir.foreach(@path) {|f| yield self.class.new(f) }
|
||
|
||
# See Dir::glob
|
||
def glob(pattern, flags = 0, &block)
|
||
patterns = [pattern].flatten
|
||
patterns.map! {|p| self.class.glob(self.to_s + p, flags, &block) }
|
||
patterns.flatten
|
||
end
|
||
# See <tt>Dir.mkdir</tt>. Create the referenced directory.
|
||
def mkdir(*args) Dir.mkdir(@path, *args) end
|
||
# See <tt>Dir.rmdir</tt>. Remove the referenced directory.
|
||
def rmdir() Dir.rmdir(@path) end
|
||
# See <tt>Dir.open</tt>.
|
||
def opendir(&block) # :yield: dir
|
||
Dir.open(@path, &block)
|
||
|
||
# See Dir::chdir
|
||
def chdir
|
||
blk = lambda { yield self } if block_given?
|
||
Dir.chdir(self, &blk)
|
||
end
|
||
end
|
||
class Pathname # * Find *
|
||
#
|
||
# Pathname#find is an iterator to traverse a directory tree in a depth first
|
||
# manner. It yields a Pathname for each file under "this" directory.
|
||
#
|
||
# Since it is implemented by <tt>find.rb</tt>, <tt>Find.prune</tt> can be used
|
||
# to control the traverse.
|
||
#
|
||
# If +self+ is <tt>.</tt>, yielded pathnames begin with a filename in the
|
||
# current directory, not <tt>./</tt>.
|
||
#
|
||
def find(&block) # :yield: pathname
|
||
require 'find'
|
||
if @path == '.'
|
||
Find.find(@path) {|f| yield self.class.new(f.sub(%r{\A\./}, '')) }
|
||
else
|
||
Find.find(@path) {|f| yield self.class.new(f) }
|
||
end
|
||
end
|
||
class Pathname
|
||
# See FileTest::blockdev?
|
||
def blockdev?; FileTest.blockdev?(self); end
|
||
|
||
# See FileTest::chardev?
|
||
def chardev?; FileTest.chardev?(self); end
|
||
|
||
# See FileTest::directory?
|
||
def directory?; FileTest.directory?(self); end
|
||
|
||
# See FileTest::executable?
|
||
def executable?; FileTest.executable?(self); end
|
||
|
||
# See FileTest::executable_real?
|
||
def executable_real?; FileTest.executable_real?(self); end
|
||
|
||
# See FileTest::exists?
|
||
def exists?; FileTest.exists?(self); end
|
||
|
||
# See FileTest::file?
|
||
def file?; FileTest.file?(self); end
|
||
|
||
# See FileTest::grpowned?
|
||
def grpowned?; FileTest.grpowned?(self); end
|
||
|
||
# See FileTest::owned?
|
||
def owned?; FileTest.owned?(self); end
|
||
|
||
# See FileTest::pipe?
|
||
def pipe?; FileTest.pipe?(self); end
|
||
|
||
# See FileTest::readable?
|
||
def readable?; FileTest.readable?(self); end
|
||
|
||
# See FileTest::readable_real?
|
||
def readable_real?; FileTest.readable_real?(self); end
|
||
|
||
# See FileTest::setgid?
|
||
def setgid?; FileTest.setgit?(self); end
|
||
|
||
# See FileTest::setuid?
|
||
def setuid?; FileTest.setuid?(self); end
|
||
|
||
# See FileTest::socket?
|
||
def socket?; FileTest.socket?(self); end
|
||
|
||
# See FileTest::sticky?
|
||
def sticky?; FileTest.sticky?(self); end
|
||
|
||
# See FileTest::symlink?
|
||
def symlink?; FileTest.symlink?(self); end
|
||
|
||
# See FileTest::world_readable?
|
||
def world_readable?; FileTest.world_readable?(self); end
|
||
|
||
# See FileTest::world_writable?
|
||
def world_writable?; FileTest.world_writable?(self); end
|
||
|
||
# See FileTest::writable?
|
||
def writable?; FileTest.writable?(self); end
|
||
|
||
# See FileTest::writable_real?
|
||
def writable_real?; FileTest.writable_real?(self); end
|
||
|
||
# See FileTest::zero?
|
||
def zero?; FileTest.zero?(self); end
|
||
end
|
||
class Pathname
|
||
# See File::atime
|
||
def atime; File.atime(self); end
|
||
|
||
# See File::ctime
|
||
def ctime; File.ctime(self); end
|
||
|
||
# See File::ftype
|
||
def ftype; File.ftype(self); end
|
||
|
||
# See File::lstat
|
||
def lstat; File.lstat(self); end
|
||
|
||
# See File::mtime
|
||
def mtime; File.mtime(self); end
|
||
|
||
# See File::stat
|
||
def stat; File.stat(self); end
|
||
|
||
# See File::utime
|
||
def utime(atime, mtime); File.utime(self, atime, mtime); end
|
||
end
|
||
class Pathname # * FileUtils *
|
||
# See <tt>FileUtils.mkpath</tt>. Creates a full path, including any
|
||
# intermediate directories that don't yet exist.
|
||
def mkpath
|
||
require 'fileutils'
|
||
FileUtils.mkpath(@path)
|
||
nil
|
||
end
|
||
class Pathname
|
||
# See File::join
|
||
def self.join(*parts); File.join(*parts.reject {|p| p.empty? }).to_path; end
|
||
|
||
# See File::basename
|
||
def basename; File.basename(self).to_path; end
|
||
|
||
# See File::chmod
|
||
def chmod(mode); File.chmod(mode, self); end
|
||
|
||
# See File::chown
|
||
def chown(owner, group); File.chown(owner, group, self); end
|
||
|
||
# See File::dirname
|
||
def dirname; File.dirname(self).to_path; end
|
||
|
||
# See File::expand_path
|
||
def expand_path(from = nil); File.expand_path(self, from).to_path; end
|
||
|
||
# See File::extname
|
||
def extname; File.extname(self); end
|
||
|
||
# See File::fnmatch
|
||
def fnmatch?(pat, flags = 0); File.fnmatch(pat, self, flags); end
|
||
|
||
# See File::join
|
||
def join(*parts); self.class.join(self, *parts); end
|
||
|
||
# See File::lchmod
|
||
def lchmod(mode); File.lchmod(mode, self); end
|
||
|
||
# See File::lchown
|
||
def lchown(owner, group); File.lchown(owner, group, self); end
|
||
|
||
# See File::link
|
||
def link(to); File.link(self, to); end
|
||
|
||
# See File::open
|
||
def open(mode = 'r', perm = nil, &blk); File.open(self, mode, perm, &blk); end
|
||
|
||
# See File::readlink
|
||
def readlink; File.readlink(self).to_path; end
|
||
|
||
# See File::rename
|
||
def rename(to); File.rename(self, to); replace(to); end
|
||
|
||
# See File::size
|
||
def size; File.size(self); end
|
||
|
||
# See File::size?
|
||
def size?; File.size?(self); end
|
||
|
||
# See File::split
|
||
def split; File.split(self).map {|part| part.to_path }; end
|
||
|
||
# See File::symlink
|
||
def symlink(to); File.symlink(self, to); end
|
||
|
||
# See File::truncate
|
||
def truncate; File.truncate(self); end
|
||
end
|
||
# See <tt>FileUtils.rm_r</tt>. Deletes a directory and all beneath it.
|
||
def rmtree
|
||
# The name "rmtree" is borrowed from File::Path of Perl.
|
||
# File::Path provides "mkpath" and "rmtree".
|
||
require 'fileutils'
|
||
FileUtils.rm_r(@path)
|
||
nil
|
||
end
|
||
class Pathname
|
||
# See FileUtils::mkpath
|
||
def mkpath; FileUtils.mkpath(self).to_path; end
|
||
|
||
# See FileUtils::rmtree
|
||
def rmtree; FileUtils.rmtree(self).first.to_path; end
|
||
|
||
# See FileUtils::touch
|
||
def touch; FileUtils.touch(self).first.to_path; end
|
||
end
|
||
class Pathname
|
||
# See IO::each_line
|
||
def each_line(sep = $/, &blk); IO.foreach(self, sep, &blk); end
|
||
|
||
# See IO::read
|
||
def read(len = nil, off = 0); IO.read(self, len, off); end
|
||
|
||
# See IO::readlines
|
||
def readlines(sep = $/); IO.readlines(self, sep); end
|
||
|
||
# See IO::sysopen
|
||
def sysopen(mode = 'r', perm = nil); IO.sysopen(self, mode, perm); end
|
||
end
|
||
class Pathname # * mixed *
|
||
# Removes a file or directory, using <tt>File.unlink</tt> or
|
||
# <tt>Dir.unlink</tt> as necessary.
|
||
def unlink()
|
||
begin
|
||
Dir.unlink @path
|
||
rescue Errno::ENOTDIR
|
||
File.unlink @path
|
||
end
|
||
end
|
||
alias delete unlink
|
||
class Pathname
|
||
# See Find::find
|
||
def find; Find.find(self) {|path| yield path.to_path }; end
|
||
end
|
||
class Pathname
|
||
undef =~
|
||
class << self
|
||
alias getwd pwd
|
||
end
|
||
|