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ruby/lib/pathname.rb

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#
# = 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.
# It supports only Unix style pathnames. 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
#
# 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.to_str.dup
@path.freeze
if /\0/ =~ @path
raise ArgumentError, "pathname contains \\0: #{@path.inspect}"
end
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_str is implemented so Pathname objects are usable with File.open, etc.
alias to_str to_s
def inspect # :nodoc:
"#<#{self.class}:#{@path}>"
end
#
# 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 # :nodoc:
# cleanpath_aggressive assumes:
# * no symlink
# * all pathname prefix contained in the pathname is existing directory
return Pathname.new('') if @path == ''
absolute = absolute?
names = []
@path.scan(%r{[^/]+}) {|name|
next if name == '.'
if name == '..'
if names.empty?
next if absolute
else
if names.last != '..'
names.pop
next
end
end
end
names << name
}
return Pathname.new(absolute ? '/' : '.') if names.empty?
path = absolute ? '/' : ''
path << names.join('/')
Pathname.new(path)
end
def cleanpath_conservative # :nodoc:
return Pathname.new('') if @path == ''
names = @path.scan(%r{[^/]+})
last_dot = names.last == '.'
names.delete('.')
names.shift while names.first == '..' if absolute?
return Pathname.new(absolute? ? '/' : '.') if names.empty?
path = absolute? ? '/' : ''
path << names.join('/')
if names.last != '..'
if last_dot
path << '/.'
elsif %r{/\z} =~ @path
path << '/'
end
end
Pathname.new(path)
end
#
# 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(*args)
unless args.empty?
warn "The argument for Pathname#realpath is obsoleted."
end
force_absolute = args.fetch(0, true)
if %r{\A/} =~ @path
top = '/'
unresolved = @path.scan(%r{[^/]+})
elsif force_absolute
# Although POSIX getcwd returns a pathname which contains no symlink,
# 4.4BSD-Lite2 derived getcwd may return the environment variable $PWD
# which may contain a symlink.
# So the return value of Dir.pwd should be examined.
top = '/'
unresolved = Dir.pwd.scan(%r{[^/]+}) + @path.scan(%r{[^/]+})
else
top = ''
unresolved = @path.scan(%r{[^/]+})
end
resolved = []
until unresolved.empty?
case unresolved.last
when '.'
unresolved.pop
when '..'
resolved.unshift unresolved.pop
else
loop_check = {}
while (stat = File.lstat(path = top + unresolved.join('/'))).symlink?
symlink_id = "#{stat.dev}:#{stat.ino}"
raise Errno::ELOOP.new(path) if loop_check[symlink_id]
loop_check[symlink_id] = true
if %r{\A/} =~ (link = File.readlink(path))
top = '/'
unresolved = link.scan(%r{[^/]+})
else
unresolved[-1,1] = link.scan(%r{[^/]+})
end
end
next if (filename = unresolved.pop) == '.'
if filename != '..' && resolved.first == '..'
resolved.shift
else
resolved.unshift filename
end
end
end
if top == '/'
resolved.shift while resolved[0] == '..'
end
if resolved.empty?
Pathname.new(top.empty? ? '.' : '/')
else
Pathname.new(top + resolved.join('/'))
end
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?
%r{\A/+\z} =~ @path ? true : false
end
# Predicate method for testing whether a path is absolute.
# It returns +true+ if the pathname begins with a slash.
def absolute?
%r{\A/} =~ @path ? true : false
end
# The opposite of #absolute?
def relative?
!absolute?
end
#
# Iterates over each component of the path.
#
# Pathname.new("/usr/bin/ruby").each_filename
# # yields "usr", "bin", and "ruby".
#
def each_filename # :yield: s
@path.scan(%r{[^/]+}) { yield $& }
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
return other if other.absolute?
path1 = @path
path2 = other.to_s
while m2 = %r{\A\.\.(?:/+|\z)}.match(path2) and
m1 = %r{(\A|/+)([^/]+)\z}.match(path1) and
%r{\A(?:\.|\.\.)\z} !~ m1[2]
path1 = m1[1].empty? ? '.' : '/' if (path1 = m1.pre_match).empty?
path2 = '.' if (path2 = m2.post_match).empty?
end
if %r{\A/+\z} =~ path1
while m2 = %r{\A\.\.(?:/+|\z)}.match(path2)
path2 = '.' if (path2 = m2.post_match).empty?
end
end
return Pathname.new(path2) if path1 == '.'
return Pathname.new(path1) if path2 == '.'
if %r{/\z} =~ path1
Pathname.new(path1 + path2)
else
Pathname.new(path1 + '/' + path2)
end
end
#
# 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 << Pathname.new(File.join(@path, e))
else
result << Pathname.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)
if self.absolute? != base_directory.absolute?
raise ArgumentError,
"relative path between absolute and relative path: #{self.inspect}, #{base_directory.inspect}"
end
dest = []
self.cleanpath.each_filename {|f|
next if f == '.'
dest << f
}
base = []
base_directory.cleanpath.each_filename {|f|
next if f == '.'
base << f
}
while !base.empty? && !dest.empty? && base[0] == dest[0]
base.shift
dest.shift
end
if base.include? '..'
raise ArgumentError, "base_directory has ..: #{base_directory.inspect}"
end
base.fill '..'
relpath = base + dest
if relpath.empty?
Pathname.new(".")
else
Pathname.new(relpath.join('/'))
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() Pathname.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) Pathname.new(File.basename(@path, *args)) end
# See <tt>File.dirname</tt>. Returns all but the last component of the path.
def dirname() Pathname.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) Pathname.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| Pathname.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 Pathname.new(f) }
else
Dir.glob(*args).map {|f| Pathname.new(f) }
end
end
# See <tt>Dir.getwd</tt>. Returns the current working directory as a Pathname.
def Pathname.getwd() Pathname.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| Pathname.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 Pathname.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 Pathname.new(f.sub(%r{\A\./}, '')) }
else
Find.find(@path) {|f| yield Pathname.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()
if FileTest.directory? @path
Dir.unlink @path
else
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
if $0 == __FILE__
require 'test/unit'
class PathnameTest < Test::Unit::TestCase # :nodoc:
class AnotherStringLike # :nodoc:
def initialize(s) @s = s end
def to_str() @s end
def ==(other) @s == other end
end
def test_equality
obj = Pathname.new("a")
str = "a"
sym = :a
ano = AnotherStringLike.new("a")
assert_equal(false, obj == str)
assert_equal(false, str == obj)
assert_equal(false, obj == ano)
assert_equal(false, ano == obj)
assert_equal(false, obj == sym)
assert_equal(false, sym == obj)
obj2 = Pathname.new("a")
assert_equal(true, obj == obj2)
assert_equal(true, obj === obj2)
assert_equal(true, obj.eql?(obj2))
end
def test_hashkey
h = {}
h[Pathname.new("a")] = 1
h[Pathname.new("a")] = 2
assert_equal(1, h.size)
end
def assert_pathname_cmp(e, s1, s2)
p1 = Pathname.new(s1)
p2 = Pathname.new(s2)
r = p1 <=> p2
assert(e == r,
"#{p1.inspect} <=> #{p2.inspect}: <#{e}> expected but was <#{r}>")
end
def test_comparison
assert_pathname_cmp( 0, "a", "a")
assert_pathname_cmp( 1, "b", "a")
assert_pathname_cmp(-1, "a", "b")
ss = %w(
a
a/
a/b
a.
a0
)
s1 = ss.shift
ss.each {|s2|
assert_pathname_cmp(-1, s1, s2)
s1 = s2
}
end
def test_comparison_string
assert_equal(nil, Pathname.new("a") <=> "a")
assert_equal(nil, "a" <=> Pathname.new("a"))
end
def test_syntactical
assert_equal(true, Pathname.new("/").root?)
assert_equal(true, Pathname.new("//").root?)
assert_equal(true, Pathname.new("///").root?)
assert_equal(false, Pathname.new("").root?)
assert_equal(false, Pathname.new("a").root?)
end
def test_cleanpath
assert_equal('/', Pathname.new('/').cleanpath(true).to_s)
assert_equal('/', Pathname.new('//').cleanpath(true).to_s)
assert_equal('', Pathname.new('').cleanpath(true).to_s)
assert_equal('.', Pathname.new('.').cleanpath(true).to_s)
assert_equal('..', Pathname.new('..').cleanpath(true).to_s)
assert_equal('a', Pathname.new('a').cleanpath(true).to_s)
assert_equal('/', Pathname.new('/.').cleanpath(true).to_s)
assert_equal('/', Pathname.new('/..').cleanpath(true).to_s)
assert_equal('/a', Pathname.new('/a').cleanpath(true).to_s)
assert_equal('.', Pathname.new('./').cleanpath(true).to_s)
assert_equal('..', Pathname.new('../').cleanpath(true).to_s)
assert_equal('a/', Pathname.new('a/').cleanpath(true).to_s)
assert_equal('a/b', Pathname.new('a//b').cleanpath(true).to_s)
assert_equal('a/.', Pathname.new('a/.').cleanpath(true).to_s)
assert_equal('a/.', Pathname.new('a/./').cleanpath(true).to_s)
assert_equal('a/..', Pathname.new('a/../').cleanpath(true).to_s)
assert_equal('/a/.', Pathname.new('/a/.').cleanpath(true).to_s)
assert_equal('..', Pathname.new('./..').cleanpath(true).to_s)
assert_equal('..', Pathname.new('../.').cleanpath(true).to_s)
assert_equal('..', Pathname.new('./../').cleanpath(true).to_s)
assert_equal('..', Pathname.new('.././').cleanpath(true).to_s)
assert_equal('/', Pathname.new('/./..').cleanpath(true).to_s)
assert_equal('/', Pathname.new('/../.').cleanpath(true).to_s)
assert_equal('/', Pathname.new('/./../').cleanpath(true).to_s)
assert_equal('/', Pathname.new('/.././').cleanpath(true).to_s)
assert_equal('a/b/c', Pathname.new('a/b/c').cleanpath(true).to_s)
assert_equal('b/c', Pathname.new('./b/c').cleanpath(true).to_s)
assert_equal('a/c', Pathname.new('a/./c').cleanpath(true).to_s)
assert_equal('a/b/.', Pathname.new('a/b/.').cleanpath(true).to_s)
assert_equal('a/..', Pathname.new('a/../.').cleanpath(true).to_s)
assert_equal('/a', Pathname.new('/../.././../a').cleanpath(true).to_s)
assert_equal('a/b/../../../../c/../d',
Pathname.new('a/b/../../../../c/../d').cleanpath(true).to_s)
end
def test_cleanpath_no_symlink
assert_equal('/', Pathname.new('/').cleanpath.to_s)
assert_equal('/', Pathname.new('//').cleanpath.to_s)
assert_equal('', Pathname.new('').cleanpath.to_s)
assert_equal('.', Pathname.new('.').cleanpath.to_s)
assert_equal('..', Pathname.new('..').cleanpath.to_s)
assert_equal('a', Pathname.new('a').cleanpath.to_s)
assert_equal('/', Pathname.new('/.').cleanpath.to_s)
assert_equal('/', Pathname.new('/..').cleanpath.to_s)
assert_equal('/a', Pathname.new('/a').cleanpath.to_s)
assert_equal('.', Pathname.new('./').cleanpath.to_s)
assert_equal('..', Pathname.new('../').cleanpath.to_s)
assert_equal('a', Pathname.new('a/').cleanpath.to_s)
assert_equal('a/b', Pathname.new('a//b').cleanpath.to_s)
assert_equal('a', Pathname.new('a/.').cleanpath.to_s)
assert_equal('a', Pathname.new('a/./').cleanpath.to_s)
assert_equal('.', Pathname.new('a/../').cleanpath.to_s)
assert_equal('/a', Pathname.new('/a/.').cleanpath.to_s)
assert_equal('..', Pathname.new('./..').cleanpath.to_s)
assert_equal('..', Pathname.new('../.').cleanpath.to_s)
assert_equal('..', Pathname.new('./../').cleanpath.to_s)
assert_equal('..', Pathname.new('.././').cleanpath.to_s)
assert_equal('/', Pathname.new('/./..').cleanpath.to_s)
assert_equal('/', Pathname.new('/../.').cleanpath.to_s)
assert_equal('/', Pathname.new('/./../').cleanpath.to_s)
assert_equal('/', Pathname.new('/.././').cleanpath.to_s)
assert_equal('a/b/c', Pathname.new('a/b/c').cleanpath.to_s)
assert_equal('b/c', Pathname.new('./b/c').cleanpath.to_s)
assert_equal('a/c', Pathname.new('a/./c').cleanpath.to_s)
assert_equal('a/b', Pathname.new('a/b/.').cleanpath.to_s)
assert_equal('.', Pathname.new('a/../.').cleanpath.to_s)
assert_equal('/a', Pathname.new('/../.././../a').cleanpath.to_s)
assert_equal('../../d', Pathname.new('a/b/../../../../c/../d').cleanpath.to_s)
end
def test_destructive_update
path = Pathname.new("a")
path.to_s.replace "b"
assert_equal(Pathname.new("a"), path)
end
def test_null_character
assert_raise(ArgumentError) { Pathname.new("\0") }
end
def assert_relpath(result, dest, base)
assert_equal(Pathname.new(result),
Pathname.new(dest).relative_path_from(Pathname.new(base)))
end
def assert_relpath_err(dest, base)
assert_raise(ArgumentError) {
Pathname.new(dest).relative_path_from(Pathname.new(base))
}
end
def test_relative_path_from
assert_relpath("../a", "a", "b")
assert_relpath("../a", "a", "b/")
assert_relpath("../a", "a/", "b")
assert_relpath("../a", "a/", "b/")
assert_relpath("../a", "/a", "/b")
assert_relpath("../a", "/a", "/b/")
assert_relpath("../a", "/a/", "/b")
assert_relpath("../a", "/a/", "/b/")
assert_relpath("../b", "a/b", "a/c")
assert_relpath("../a", "../a", "../b")
assert_relpath("a", "a", ".")
assert_relpath("..", ".", "a")
assert_relpath(".", ".", ".")
assert_relpath(".", "..", "..")
assert_relpath("..", "..", ".")
assert_relpath("c/d", "/a/b/c/d", "/a/b")
assert_relpath("../..", "/a/b", "/a/b/c/d")
assert_relpath("../../../../e", "/e", "/a/b/c/d")
assert_relpath("../b/c", "a/b/c", "a/d")
assert_relpath("../a", "/../a", "/b")
assert_relpath("../../a", "../a", "b")
assert_relpath(".", "/a/../../b", "/b")
assert_relpath("..", "a/..", "a")
assert_relpath(".", "a/../b", "b")
assert_relpath("a", "a", "b/..")
assert_relpath("b/c", "b/c", "b/..")
assert_relpath_err("/", ".")
assert_relpath_err(".", "/")
assert_relpath_err("a", "..")
assert_relpath_err(".", "..")
end
def assert_pathname_plus(a, b, c)
a = Pathname.new(a)
b = Pathname.new(b)
c = Pathname.new(c)
d = b + c
assert(a == d,
"#{b.inspect} + #{c.inspect}: #{a.inspect} expected but was #{d.inspect}")
end
def test_plus
assert_pathname_plus('a/b', 'a', 'b')
assert_pathname_plus('a', 'a', '.')
assert_pathname_plus('b', '.', 'b')
assert_pathname_plus('.', '.', '.')
assert_pathname_plus('/b', 'a', '/b')
assert_pathname_plus('/', '/', '..')
assert_pathname_plus('.', 'a', '..')
assert_pathname_plus('a', 'a/b', '..')
assert_pathname_plus('../..', '..', '..')
assert_pathname_plus('/c', '/', '../c')
assert_pathname_plus('c', 'a', '../c')
assert_pathname_plus('a/c', 'a/b', '../c')
assert_pathname_plus('../../c', '..', '../c')
end
end
end
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