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| Current File : //usr/local/lib/ruby/1.8/pathname.rb |
#
# = pathname.rb
#
# Object-Oriented Pathname Class
#
# Author:: Tanaka Akira <akr@m17n.org>
# Documentation:: Author and Gavin Sinclair
#
# For documentation, see class Pathname.
#
# <tt>pathname.rb</tt> is distributed with Ruby since 1.8.0.
#
#
# == Pathname
#
# Pathname represents a pathname which locates a file in a filesystem.
# The pathname depends on OS: Unix, Windows, etc.
# Pathname library works with pathnames of local OS.
# However non-Unix pathnames are supported experimentally.
#
# It does not represent the file itself.
# A Pathname can be relative or absolute. It's not until you try to
# reference the file that it even matters whether the file exists or not.
#
# Pathname is immutable. It has no method for destructive update.
#
# The value of this class is to manipulate file path information in a neater
# way than standard Ruby provides. The examples below demonstrate the
# difference. *All* functionality from File, FileTest, and some from Dir and
# FileUtils is included, in an unsurprising way. It is essentially a facade for
# all of these, and more.
#
# == Examples
#
# === Example 1: Using Pathname
#
# require 'pathname'
# p = Pathname.new("/usr/bin/ruby")
# size = p.size # 27662
# isdir = p.directory? # false
# dir = p.dirname # Pathname:/usr/bin
# base = p.basename # Pathname:ruby
# dir, base = p.split # [Pathname:/usr/bin, Pathname:ruby]
# data = p.read
# p.open { |f| _ }
# p.each_line { |line| _ }
#
# === Example 2: Using standard Ruby
#
# p = "/usr/bin/ruby"
# size = File.size(p) # 27662
# isdir = File.directory?(p) # false
# dir = File.dirname(p) # "/usr/bin"
# base = File.basename(p) # "ruby"
# dir, base = File.split(p) # ["/usr/bin", "ruby"]
# data = File.read(p)
# File.open(p) { |f| _ }
# File.foreach(p) { |line| _ }
#
# === Example 3: Special features
#
# p1 = Pathname.new("/usr/lib") # Pathname:/usr/lib
# p2 = p1 + "ruby/1.8" # Pathname:/usr/lib/ruby/1.8
# p3 = p1.parent # Pathname:/usr
# p4 = p2.relative_path_from(p3) # Pathname:lib/ruby/1.8
# pwd = Pathname.pwd # Pathname:/home/gavin
# pwd.absolute? # true
# p5 = Pathname.new "." # Pathname:.
# p5 = p5 + "music/../articles" # Pathname:music/../articles
# p5.cleanpath # Pathname:articles
# p5.realpath # Pathname:/home/gavin/articles
# p5.children # [Pathname:/home/gavin/articles/linux, ...]
#
# == Breakdown of functionality
#
# === Core methods
#
# These methods are effectively manipulating a String, because that's all a path
# is. Except for #mountpoint?, #children, and #realpath, they don't access the
# filesystem.
#
# - +
# - #join
# - #parent
# - #root?
# - #absolute?
# - #relative?
# - #relative_path_from
# - #each_filename
# - #cleanpath
# - #realpath
# - #children
# - #mountpoint?
#
# === File status predicate methods
#
# These methods are a facade for FileTest:
# - #blockdev?
# - #chardev?
# - #directory?
# - #executable?
# - #executable_real?
# - #exist?
# - #file?
# - #grpowned?
# - #owned?
# - #pipe?
# - #readable?
# - #world_readable?
# - #readable_real?
# - #setgid?
# - #setuid?
# - #size
# - #size?
# - #socket?
# - #sticky?
# - #symlink?
# - #writable?
# - #world_writable?
# - #writable_real?
# - #zero?
#
# === File property and manipulation methods
#
# These methods are a facade for File:
# - #atime
# - #ctime
# - #mtime
# - #chmod(mode)
# - #lchmod(mode)
# - #chown(owner, group)
# - #lchown(owner, group)
# - #fnmatch(pattern, *args)
# - #fnmatch?(pattern, *args)
# - #ftype
# - #make_link(old)
# - #open(*args, &block)
# - #readlink
# - #rename(to)
# - #stat
# - #lstat
# - #make_symlink(old)
# - #truncate(length)
# - #utime(atime, mtime)
# - #basename(*args)
# - #dirname
# - #extname
# - #expand_path(*args)
# - #split
#
# === Directory methods
#
# These methods are a facade for Dir:
# - Pathname.glob(*args)
# - Pathname.getwd / Pathname.pwd
# - #rmdir
# - #entries
# - #each_entry(&block)
# - #mkdir(*args)
# - #opendir(*args)
#
# === IO
#
# These methods are a facade for IO:
# - #each_line(*args, &block)
# - #read(*args)
# - #readlines(*args)
# - #sysopen(*args)
#
# === Utilities
#
# These methods are a mixture of Find, FileUtils, and others:
# - #find(&block)
# - #mkpath
# - #rmtree
# - #unlink / #delete
#
#
# == Method documentation
#
# As the above section shows, most of the methods in Pathname are facades. The
# documentation for these methods generally just says, for instance, "See
# FileTest.writable?", as you should be familiar with the original method
# anyway, and its documentation (e.g. through +ri+) will contain more
# information. In some cases, a brief description will follow.
#
class Pathname
# :stopdoc:
if RUBY_VERSION < "1.9"
TO_PATH = :to_str
else
# to_path is implemented so Pathname objects are usable with File.open, etc.
TO_PATH = :to_path
end
# :startdoc:
#
# Create a Pathname object from the given String (or String-like object).
# If +path+ contains a NUL character (<tt>\0</tt>), an ArgumentError is raised.
#
def initialize(path)
path = path.__send__(TO_PATH) if path.respond_to? TO_PATH
@path = path.dup
if /\0/ =~ @path
raise ArgumentError, "pathname contains \\0: #{@path.inspect}"
end
self.taint if @path.tainted?
end
def freeze() super; @path.freeze; self end
def taint() super; @path.taint; self end
def untaint() super; @path.untaint; self end
#
# Compare this pathname with +other+. The comparison is string-based.
# Be aware that two different paths (<tt>foo.txt</tt> and <tt>./foo.txt</tt>)
# can refer to the same file.
#
def ==(other)
return false unless Pathname === other
other.to_s == @path
end
alias === ==
alias eql? ==
# Provides for comparing pathnames, case-sensitively.
def <=>(other)
return nil unless Pathname === other
@path.tr('/', "\0") <=> other.to_s.tr('/', "\0")
end
def hash # :nodoc:
@path.hash
end
# Return the path as a String.
def to_s
@path.dup
end
# to_path is implemented so Pathname objects are usable with File.open, etc.
alias_method TO_PATH, :to_s
def inspect # :nodoc:
"#<#{self.class}:#{@path}>"
end
# Return a pathname which is substituted by String#sub.
def sub(pattern, *rest, &block)
if block
path = @path.sub(pattern, *rest) {|*args|
begin
old = Thread.current[:pathname_sub_matchdata]
Thread.current[:pathname_sub_matchdata] = $~
eval("$~ = Thread.current[:pathname_sub_matchdata]", block.binding)
ensure
Thread.current[:pathname_sub_matchdata] = old
end
yield(*args)
}
else
path = @path.sub(pattern, *rest)
end
self.class.new(path)
end
if File::ALT_SEPARATOR
SEPARATOR_PAT = /[#{Regexp.quote File::ALT_SEPARATOR}#{Regexp.quote File::SEPARATOR}]/
else
SEPARATOR_PAT = /#{Regexp.quote File::SEPARATOR}/
end
# chop_basename(path) -> [pre-basename, basename] or nil
def chop_basename(path)
base = File.basename(path)
if /\A#{SEPARATOR_PAT}?\z/ =~ base
return nil
else
return path[0, path.rindex(base)], base
end
end
private :chop_basename
# split_names(path) -> prefix, [name, ...]
def split_names(path)
names = []
while r = chop_basename(path)
path, basename = r
names.unshift basename
end
return path, names
end
private :split_names
def prepend_prefix(prefix, relpath)
if relpath.empty?
File.dirname(prefix)
elsif /#{SEPARATOR_PAT}/ =~ prefix
prefix = File.dirname(prefix)
prefix = File.join(prefix, "") if File.basename(prefix + 'a') != 'a'
prefix + relpath
else
prefix + relpath
end
end
private :prepend_prefix
# Returns clean pathname of +self+ with consecutive slashes and useless dots
# removed. The filesystem is not accessed.
#
# If +consider_symlink+ is +true+, then a more conservative algorithm is used
# to avoid breaking symbolic linkages. This may retain more <tt>..</tt>
# entries than absolutely necessary, but without accessing the filesystem,
# this can't be avoided. See #realpath.
#
def cleanpath(consider_symlink=false)
if consider_symlink
cleanpath_conservative
else
cleanpath_aggressive
end
end
#
# Clean the path simply by resolving and removing excess "." and ".." entries.
# Nothing more, nothing less.
#
def cleanpath_aggressive
path = @path
names = []
pre = path
while r = chop_basename(pre)
pre, base = r
case base
when '.'
when '..'
names.unshift base
else
if names[0] == '..'
names.shift
else
names.unshift base
end
end
end
if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
names.shift while names[0] == '..'
end
self.class.new(prepend_prefix(pre, File.join(*names)))
end
private :cleanpath_aggressive
# has_trailing_separator?(path) -> bool
def has_trailing_separator?(path)
if r = chop_basename(path)
pre, basename = r
pre.length + basename.length < path.length
else
false
end
end
private :has_trailing_separator?
# add_trailing_separator(path) -> path
def add_trailing_separator(path)
if File.basename(path + 'a') == 'a'
path
else
File.join(path, "") # xxx: Is File.join is appropriate to add separator?
end
end
private :add_trailing_separator
def del_trailing_separator(path)
if r = chop_basename(path)
pre, basename = r
pre + basename
elsif /#{SEPARATOR_PAT}+\z/o =~ path
$` + File.dirname(path)[/#{SEPARATOR_PAT}*\z/o]
else
path
end
end
private :del_trailing_separator
def cleanpath_conservative
path = @path
names = []
pre = path
while r = chop_basename(pre)
pre, base = r
names.unshift base if base != '.'
end
if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
names.shift while names[0] == '..'
end
if names.empty?
self.class.new(File.dirname(pre))
else
if names.last != '..' && File.basename(path) == '.'
names << '.'
end
result = prepend_prefix(pre, File.join(*names))
if /\A(?:\.|\.\.)\z/ !~ names.last && has_trailing_separator?(path)
self.class.new(add_trailing_separator(result))
else
self.class.new(result)
end
end
end
private :cleanpath_conservative
def realpath_rec(prefix, unresolved, h)
resolved = []
until unresolved.empty?
n = unresolved.shift
if n == '.'
next
elsif n == '..'
resolved.pop
else
path = prepend_prefix(prefix, File.join(*(resolved + [n])))
if h.include? path
if h[path] == :resolving
raise Errno::ELOOP.new(path)
else
prefix, *resolved = h[path]
end
else
s = File.lstat(path)
if s.symlink?
h[path] = :resolving
link_prefix, link_names = split_names(File.readlink(path))
if link_prefix == ''
prefix, *resolved = h[path] = realpath_rec(prefix, resolved + link_names, h)
else
prefix, *resolved = h[path] = realpath_rec(link_prefix, link_names, h)
end
else
resolved << n
h[path] = [prefix, *resolved]
end
end
end
end
return prefix, *resolved
end
private :realpath_rec
#
# Returns a real (absolute) pathname of +self+ in the actual filesystem.
# The real pathname doesn't contain symlinks or useless dots.
#
# No arguments should be given; the old behaviour is *obsoleted*.
#
def realpath
path = @path
prefix, names = split_names(path)
if prefix == ''
prefix, names2 = split_names(Dir.pwd)
names = names2 + names
end
prefix, *names = realpath_rec(prefix, names, {})
self.class.new(prepend_prefix(prefix, File.join(*names)))
end
# #parent returns the parent directory.
#
# This is same as <tt>self + '..'</tt>.
def parent
self + '..'
end
# #mountpoint? returns +true+ if <tt>self</tt> points to a mountpoint.
def mountpoint?
begin
stat1 = self.lstat
stat2 = self.parent.lstat
stat1.dev == stat2.dev && stat1.ino == stat2.ino ||
stat1.dev != stat2.dev
rescue Errno::ENOENT
false
end
end
#
# #root? is a predicate for root directories. I.e. it returns +true+ if the
# pathname consists of consecutive slashes.
#
# It doesn't access actual filesystem. So it may return +false+ for some
# pathnames which points to roots such as <tt>/usr/..</tt>.
#
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?
end
# The opposite of #absolute?
def relative?
path = @path
while r = chop_basename(path)
path, basename = r
end
path == ''
end
#
# Iterates over each component of the path.
#
# Pathname.new("/usr/bin/ruby").each_filename {|filename| ... }
# # yields "usr", "bin", and "ruby".
#
def each_filename # :yield: filename
prefix, names = split_names(@path)
names.each {|filename| yield filename }
nil
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>
#
# 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>
#
# It doesn't access actual filesystem.
#
# This method is available since 1.8.5.
#
def descend
vs = []
ascend {|v| vs << v }
vs.reverse_each {|v| yield v }
nil
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:/>
#
# 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.
#
# This method is available since 1.8.5.
#
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
end
#
# Pathname#+ appends a pathname fragment to this one to produce a new Pathname
# object.
#
# p1 = Pathname.new("/usr") # Pathname:/usr
# p2 = p1 + "bin/ruby" # Pathname:/usr/bin/ruby
# p3 = p1 + "/etc/passwd" # Pathname:/etc/passwd
#
# This method doesn't access the file system; it is pure string manipulation.
#
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
end
private :plus
#
# Pathname#join joins pathnames.
#
# <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
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:
# p = Pathname("/usr/lib/ruby/1.8")
# p.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, ... ]
# p.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.
#
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
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.
#
# #relative_path_from doesn't access the filesystem. It assumes no symlinks.
#
# ArgumentError is raised when it cannot find a relative path.
#
# This method has existed since 1.8.1.
#
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 != '.'
end
base_prefix = base_directory
base_names = []
while r = chop_basename(base_prefix)
base_prefix, basename = r
base_names.unshift basename if basename != '.'
end
if dest_prefix != base_prefix
raise ArgumentError, "different prefix: #{dest_prefix.inspect} and #{base_directory.inspect}"
end
while !dest_names.empty? &&
!base_names.empty? &&
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))
end
end
end
class Pathname # * IO *
#
# #each_line iterates over the line in the file. It yields a String object
# for each line.
#
# This method has existed since 1.8.1.
#
def each_line(*args, &block) # :yield: line
IO.foreach(@path, *args, &block)
end
# Pathname#foreachline is *obsoleted* at 1.8.1. Use #each_line.
def foreachline(*args, &block)
warn "Pathname#foreachline is obsoleted. Use Pathname#each_line."
each_line(*args, &block)
end
# See <tt>IO.read</tt>. Returns all the bytes from the file, or the first +N+
# if specified.
def read(*args) IO.read(@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)
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
# Pathname#link is confusing and *obsoleted* because the receiver/argument
# order is inverted to corresponding system call.
def link(old)
warn 'Pathname#link is obsoleted. Use Pathname#make_link.'
File.link(old, @path)
end
# Pathname#symlink is confusing and *obsoleted* because the receiver/argument
# order is inverted to corresponding system call.
def symlink(old)
warn 'Pathname#symlink is obsoleted. Use Pathname#make_symlink.'
File.symlink(old, @path)
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: p
if block_given?
Dir.glob(*args) {|f| yield self.new(f) }
else
Dir.glob(*args).map {|f| self.new(f) }
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
# Pathname#chdir is *obsoleted* at 1.8.1.
def chdir(&block)
warn "Pathname#chdir is obsoleted. Use Dir.chdir."
Dir.chdir(@path, &block)
end
# Pathname#chroot is *obsoleted* at 1.8.1.
def chroot
warn "Pathname#chroot is obsoleted. Use Dir.chroot."
Dir.chroot(@path)
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: p
Dir.foreach(@path) {|f| yield self.class.new(f) }
end
# Pathname#dir_foreach is *obsoleted* at 1.8.1.
def dir_foreach(*args, &block)
warn "Pathname#dir_foreach is obsoleted. Use Pathname#each_entry."
each_entry(*args, &block)
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)
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: p
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
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
# 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
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
# This method is *obsoleted* at 1.8.1. Use #each_line or #each_entry.
def foreach(*args, &block)
warn "Pathname#foreach is obsoleted. Use each_line or each_entry."
if FileTest.directory? @path
# For polymorphism between Dir.foreach and IO.foreach,
# Pathname#foreach doesn't yield Pathname object.
Dir.foreach(@path, *args, &block)
else
IO.foreach(@path, *args, &block)
end
end
end
module Kernel
# create a pathname object.
#
# This method is available since 1.8.5.
def Pathname(path) # :doc:
Pathname.new(path)
end
private :Pathname
end