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# frozen_string_literal: true
begin
require 'rbconfig'
rescue LoadError
# for make mjit-headers
end
#
# = fileutils.rb
#
# Copyright (c) 2000-2007 Minero Aoki
#
# This program is free software.
# You can distribute/modify this program under the same terms of ruby.
#
# == module FileUtils
#
# Namespace for several file utility methods for copying, moving, removing, etc.
#
# === Module Functions
#
# require 'fileutils'
#
# FileUtils.cd(dir, **options)
# FileUtils.cd(dir, **options) {|dir| block }
# FileUtils.pwd()
# FileUtils.mkdir(dir, **options)
# FileUtils.mkdir(list, **options)
# FileUtils.mkdir_p(dir, **options)
# FileUtils.mkdir_p(list, **options)
# FileUtils.rmdir(dir, **options)
# FileUtils.rmdir(list, **options)
# FileUtils.ln(target, link, **options)
# FileUtils.ln(targets, dir, **options)
# FileUtils.ln_s(target, link, **options)
# FileUtils.ln_s(targets, dir, **options)
# FileUtils.ln_sf(target, link, **options)
# FileUtils.cp(src, dest, **options)
# FileUtils.cp(list, dir, **options)
# FileUtils.cp_r(src, dest, **options)
# FileUtils.cp_r(list, dir, **options)
# FileUtils.mv(src, dest, **options)
# FileUtils.mv(list, dir, **options)
# FileUtils.rm(list, **options)
# FileUtils.rm_r(list, **options)
# FileUtils.rm_rf(list, **options)
# FileUtils.install(src, dest, **options)
# FileUtils.chmod(mode, list, **options)
# FileUtils.chmod_R(mode, list, **options)
# FileUtils.chown(user, group, list, **options)
# FileUtils.chown_R(user, group, list, **options)
# FileUtils.touch(list, **options)
#
# Possible <tt>options</tt> are:
#
# <tt>:force</tt> :: forced operation (rewrite files if exist, remove
# directories if not empty, etc.);
# <tt>:verbose</tt> :: print command to be run, in bash syntax, before
# performing it;
# <tt>:preserve</tt> :: preserve object's group, user and modification
# time on copying;
# <tt>:noop</tt> :: no changes are made (usable in combination with
# <tt>:verbose</tt> which will print the command to run)
#
# Each method documents the options that it honours. See also ::commands,
# ::options and ::options_of methods to introspect which command have which
# options.
#
# All methods that have the concept of a "source" file or directory can take
# either one file or a list of files in that argument. See the method
# documentation for examples.
#
# There are some `low level' methods, which do not accept keyword arguments:
#
# FileUtils.copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false)
# FileUtils.copy_file(src, dest, preserve = false, dereference = true)
# FileUtils.copy_stream(srcstream, deststream)
# FileUtils.remove_entry(path, force = false)
# FileUtils.remove_entry_secure(path, force = false)
# FileUtils.remove_file(path, force = false)
# FileUtils.compare_file(path_a, path_b)
# FileUtils.compare_stream(stream_a, stream_b)
# FileUtils.uptodate?(file, cmp_list)
#
# == module FileUtils::Verbose
#
# This module has all methods of FileUtils module, but it outputs messages
# before acting. This equates to passing the <tt>:verbose</tt> flag to methods
# in FileUtils.
#
# == module FileUtils::NoWrite
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> flag to methods
# in FileUtils.
#
# == module FileUtils::DryRun
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> and
# <tt>:verbose</tt> flags to methods in FileUtils.
#
module FileUtils
VERSION = "1.5.0"
def self.private_module_function(name) #:nodoc:
module_function name
private_class_method name
end
#
# Returns the name of the current directory.
#
def pwd
Dir.pwd
end
module_function :pwd
alias getwd pwd
module_function :getwd
#
# Changes the current directory to the directory +dir+.
#
# If this method is called with block, resumes to the previous
# working directory after the block execution has finished.
#
# FileUtils.cd('/') # change directory
#
# FileUtils.cd('/', verbose: true) # change directory and report it
#
# FileUtils.cd('/') do # change directory
# # ... # do something
# end # return to original directory
#
def cd(dir, verbose: nil, &block) # :yield: dir
fu_output_message "cd #{dir}" if verbose
result = Dir.chdir(dir, &block)
fu_output_message 'cd -' if verbose and block
result
end
module_function :cd
alias chdir cd
module_function :chdir
#
# Returns true if +new+ is newer than all +old_list+.
# Non-existent files are older than any file.
#
# FileUtils.uptodate?('hello.o', %w(hello.c hello.h)) or \
# system 'make hello.o'
#
def uptodate?(new, old_list)
return false unless File.exist?(new)
new_time = File.mtime(new)
old_list.each do |old|
if File.exist?(old)
return false unless new_time > File.mtime(old)
end
end
true
end
module_function :uptodate?
def remove_trailing_slash(dir) #:nodoc:
dir == '/' ? dir : dir.chomp(?/)
end
private_module_function :remove_trailing_slash
#
# Creates one or more directories.
#
# FileUtils.mkdir 'test'
# FileUtils.mkdir %w(tmp data)
# FileUtils.mkdir 'notexist', noop: true # Does not really create.
# FileUtils.mkdir 'tmp', mode: 0700
#
def mkdir(list, mode: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "mkdir #{mode ? ('-m %03o ' % mode) : ''}#{list.join ' '}" if verbose
return if noop
list.each do |dir|
fu_mkdir dir, mode
end
end
module_function :mkdir
#
# Creates a directory and all its parent directories.
# For example,
#
# FileUtils.mkdir_p '/usr/local/lib/ruby'
#
# causes to make following directories, if they do not exist.
#
# * /usr
# * /usr/local
# * /usr/local/lib
# * /usr/local/lib/ruby
#
# You can pass several directories at a time in a list.
#
def mkdir_p(list, mode: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "mkdir -p #{mode ? ('-m %03o ' % mode) : ''}#{list.join ' '}" if verbose
return *list if noop
list.each do |item|
path = remove_trailing_slash(item)
# optimize for the most common case
begin
fu_mkdir path, mode
next
rescue SystemCallError
next if File.directory?(path)
end
stack = []
until path == stack.last # dirname("/")=="/", dirname("C:/")=="C:/"
stack.push path
path = File.dirname(path)
break if File.directory?(path)
end
stack.pop if path == stack.last # root directory should exist
stack.reverse_each do |dir|
begin
fu_mkdir dir, mode
rescue SystemCallError
raise unless File.directory?(dir)
end
end
end
return *list
end
module_function :mkdir_p
alias mkpath mkdir_p
alias makedirs mkdir_p
module_function :mkpath
module_function :makedirs
def fu_mkdir(path, mode) #:nodoc:
path = remove_trailing_slash(path)
if mode
Dir.mkdir path, mode
File.chmod mode, path
else
Dir.mkdir path
end
end
private_module_function :fu_mkdir
#
# Removes one or more directories.
#
# FileUtils.rmdir 'somedir'
# FileUtils.rmdir %w(somedir anydir otherdir)
# # Does not really remove directory; outputs message.
# FileUtils.rmdir 'somedir', verbose: true, noop: true
#
def rmdir(list, parents: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "rmdir #{parents ? '-p ' : ''}#{list.join ' '}" if verbose
return if noop
list.each do |dir|
Dir.rmdir(dir = remove_trailing_slash(dir))
if parents
begin
until (parent = File.dirname(dir)) == '.' or parent == dir
dir = parent
Dir.rmdir(dir)
end
rescue Errno::ENOTEMPTY, Errno::EEXIST, Errno::ENOENT
end
end
end
end
module_function :rmdir
#
# :call-seq:
# FileUtils.ln(target, link, force: nil, noop: nil, verbose: nil)
# FileUtils.ln(target, dir, force: nil, noop: nil, verbose: nil)
# FileUtils.ln(targets, dir, force: nil, noop: nil, verbose: nil)
#
# In the first form, creates a hard link +link+ which points to +target+.
# If +link+ already exists, raises Errno::EEXIST.
# But if the +force+ option is set, overwrites +link+.
#
# FileUtils.ln 'gcc', 'cc', verbose: true
# FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs'
#
# In the second form, creates a link +dir/target+ pointing to +target+.
# In the third form, creates several hard links in the directory +dir+,
# pointing to each item in +targets+.
# If +dir+ is not a directory, raises Errno::ENOTDIR.
#
# FileUtils.cd '/sbin'
# FileUtils.ln %w(cp mv mkdir), '/bin' # Now /sbin/cp and /bin/cp are linked.
#
def ln(src, dest, force: nil, noop: nil, verbose: nil)
fu_output_message "ln#{force ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if force
File.link s, d
end
end
module_function :ln
alias link ln
module_function :link
#
# Hard link +src+ to +dest+. If +src+ is a directory, this method links
# all its contents recursively. If +dest+ is a directory, links
# +src+ to +dest/src+.
#
# +src+ can be a list of files.
#
# If +dereference_root+ is true, this method dereference tree root.
#
# If +remove_destination+ is true, this method removes each destination file before copy.
#
# FileUtils.rm_r site_ruby + '/mylib', force: true
# FileUtils.cp_lr 'lib/', site_ruby + '/mylib'
#
# # Examples of linking several files to target directory.
# FileUtils.cp_lr %w(mail.rb field.rb debug/), site_ruby + '/tmail'
# FileUtils.cp_lr Dir.glob('*.rb'), '/home/aamine/lib/ruby', noop: true, verbose: true
#
# # If you want to link all contents of a directory instead of the
# # directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# # use the following code.
# FileUtils.cp_lr 'src/.', 'dest' # cp_lr('src', 'dest') makes dest/src, but this doesn't.
#
def cp_lr(src, dest, noop: nil, verbose: nil,
dereference_root: true, remove_destination: false)
fu_output_message "cp -lr#{remove_destination ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
link_entry s, d, dereference_root, remove_destination
end
end
module_function :cp_lr
#
# :call-seq:
# FileUtils.ln_s(target, link, force: nil, noop: nil, verbose: nil)
# FileUtils.ln_s(target, dir, force: nil, noop: nil, verbose: nil)
# FileUtils.ln_s(targets, dir, force: nil, noop: nil, verbose: nil)
#
# In the first form, creates a symbolic link +link+ which points to +target+.
# If +link+ already exists, raises Errno::EEXIST.
# But if the <tt>force</tt> option is set, overwrites +link+.
#
# FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby'
# FileUtils.ln_s 'verylongsourcefilename.c', 'c', force: true
#
# In the second form, creates a link +dir/target+ pointing to +target+.
# In the third form, creates several symbolic links in the directory +dir+,
# pointing to each item in +targets+.
# If +dir+ is not a directory, raises Errno::ENOTDIR.
#
# FileUtils.ln_s Dir.glob('/bin/*.rb'), '/home/foo/bin'
#
def ln_s(src, dest, force: nil, noop: nil, verbose: nil)
fu_output_message "ln -s#{force ? 'f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if force
File.symlink s, d
end
end
module_function :ln_s
alias symlink ln_s
module_function :symlink
#
# :call-seq:
# FileUtils.ln_sf(*args)
#
# Same as
#
# FileUtils.ln_s(*args, force: true)
#
def ln_sf(src, dest, noop: nil, verbose: nil)
ln_s src, dest, force: true, noop: noop, verbose: verbose
end
module_function :ln_sf
#
# Hard links a file system entry +src+ to +dest+.
# If +src+ is a directory, this method links its contents recursively.
#
# Both of +src+ and +dest+ must be a path name.
# +src+ must exist, +dest+ must not exist.
#
# If +dereference_root+ is true, this method dereferences the tree root.
#
# If +remove_destination+ is true, this method removes each destination file before copy.
#
def link_entry(src, dest, dereference_root = false, remove_destination = false)
Entry_.new(src, nil, dereference_root).traverse do |ent|
destent = Entry_.new(dest, ent.rel, false)
File.unlink destent.path if remove_destination && File.file?(destent.path)
ent.link destent.path
end
end
module_function :link_entry
#
# Copies a file content +src+ to +dest+. If +dest+ is a directory,
# copies +src+ to +dest/src+.
#
# If +src+ is a list of files, then +dest+ must be a directory.
#
# FileUtils.cp 'eval.c', 'eval.c.org'
# FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6'
# FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6', verbose: true
# FileUtils.cp 'symlink', 'dest' # copy content, "dest" is not a symlink
#
def cp(src, dest, preserve: nil, noop: nil, verbose: nil)
fu_output_message "cp#{preserve ? ' -p' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
copy_file s, d, preserve
end
end
module_function :cp
alias copy cp
module_function :copy
#
# Copies +src+ to +dest+. If +src+ is a directory, this method copies
# all its contents recursively. If +dest+ is a directory, copies
# +src+ to +dest/src+.
#
# +src+ can be a list of files.
#
# If +dereference_root+ is true, this method dereference tree root.
#
# If +remove_destination+ is true, this method removes each destination file before copy.
#
# # Installing Ruby library "mylib" under the site_ruby
# FileUtils.rm_r site_ruby + '/mylib', force: true
# FileUtils.cp_r 'lib/', site_ruby + '/mylib'
#
# # Examples of copying several files to target directory.
# FileUtils.cp_r %w(mail.rb field.rb debug/), site_ruby + '/tmail'
# FileUtils.cp_r Dir.glob('*.rb'), '/home/foo/lib/ruby', noop: true, verbose: true
#
# # If you want to copy all contents of a directory instead of the
# # directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# # use following code.
# FileUtils.cp_r 'src/.', 'dest' # cp_r('src', 'dest') makes dest/src,
# # but this doesn't.
#
def cp_r(src, dest, preserve: nil, noop: nil, verbose: nil,
dereference_root: true, remove_destination: nil)
fu_output_message "cp -r#{preserve ? 'p' : ''}#{remove_destination ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
copy_entry s, d, preserve, dereference_root, remove_destination
end
end
module_function :cp_r
#
# Copies a file system entry +src+ to +dest+.
# If +src+ is a directory, this method copies its contents recursively.
# This method preserves file types, c.f. symlink, directory...
# (FIFO, device files and etc. are not supported yet)
#
# Both of +src+ and +dest+ must be a path name.
# +src+ must exist, +dest+ must not exist.
#
# If +preserve+ is true, this method preserves owner, group, and
# modified time. Permissions are copied regardless +preserve+.
#
# If +dereference_root+ is true, this method dereference tree root.
#
# If +remove_destination+ is true, this method removes each destination file before copy.
#
def copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false)
if dereference_root
src = File.realpath(src)
end
Entry_.new(src, nil, false).wrap_traverse(proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
File.unlink destent.path if remove_destination && (File.file?(destent.path) || File.symlink?(destent.path))
ent.copy destent.path
end, proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
ent.copy_metadata destent.path if preserve
end)
end
module_function :copy_entry
#
# Copies file contents of +src+ to +dest+.
# Both of +src+ and +dest+ must be a path name.
#
def copy_file(src, dest, preserve = false, dereference = true)
ent = Entry_.new(src, nil, dereference)
ent.copy_file dest
ent.copy_metadata dest if preserve
end
module_function :copy_file
#
# Copies stream +src+ to +dest+.
# +src+ must respond to #read(n) and
# +dest+ must respond to #write(str).
#
def copy_stream(src, dest)
IO.copy_stream(src, dest)
end
module_function :copy_stream
#
# Moves file(s) +src+ to +dest+. If +file+ and +dest+ exist on the different
# disk partition, the file is copied then the original file is removed.
#
# FileUtils.mv 'badname.rb', 'goodname.rb'
# FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', force: true # no error
#
# FileUtils.mv %w(junk.txt dust.txt), '/home/foo/.trash/'
# FileUtils.mv Dir.glob('test*.rb'), 'test', noop: true, verbose: true
#
def mv(src, dest, force: nil, noop: nil, verbose: nil, secure: nil)
fu_output_message "mv#{force ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
destent = Entry_.new(d, nil, true)
begin
if destent.exist?
if destent.directory?
raise Errno::EEXIST, d
end
end
begin
File.rename s, d
rescue Errno::EXDEV,
Errno::EPERM # move from unencrypted to encrypted dir (ext4)
copy_entry s, d, true
if secure
remove_entry_secure s, force
else
remove_entry s, force
end
end
rescue SystemCallError
raise unless force
end
end
end
module_function :mv
alias move mv
module_function :move
#
# Remove file(s) specified in +list+. This method cannot remove directories.
# All StandardErrors are ignored when the :force option is set.
#
# FileUtils.rm %w( junk.txt dust.txt )
# FileUtils.rm Dir.glob('*.so')
# FileUtils.rm 'NotExistFile', force: true # never raises exception
#
def rm(list, force: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "rm#{force ? ' -f' : ''} #{list.join ' '}" if verbose
return if noop
list.each do |path|
remove_file path, force
end
end
module_function :rm
alias remove rm
module_function :remove
#
# Equivalent to
#
# FileUtils.rm(list, force: true)
#
def rm_f(list, noop: nil, verbose: nil)
rm list, force: true, noop: noop, verbose: verbose
end
module_function :rm_f
alias safe_unlink rm_f
module_function :safe_unlink
#
# remove files +list+[0] +list+[1]... If +list+[n] is a directory,
# removes its all contents recursively. This method ignores
# StandardError when :force option is set.
#
# FileUtils.rm_r Dir.glob('/tmp/*')
# FileUtils.rm_r 'some_dir', force: true
#
# WARNING: This method causes local vulnerability
# if one of parent directories or removing directory tree are world
# writable (including /tmp, whose permission is 1777), and the current
# process has strong privilege such as Unix super user (root), and the
# system has symbolic link. For secure removing, read the documentation
# of remove_entry_secure carefully, and set :secure option to true.
# Default is <tt>secure: false</tt>.
#
# NOTE: This method calls remove_entry_secure if :secure option is set.
# See also remove_entry_secure.
#
def rm_r(list, force: nil, noop: nil, verbose: nil, secure: nil)
list = fu_list(list)
fu_output_message "rm -r#{force ? 'f' : ''} #{list.join ' '}" if verbose
return if noop
list.each do |path|
if secure
remove_entry_secure path, force
else
remove_entry path, force
end
end
end
module_function :rm_r
#
# Equivalent to
#
# FileUtils.rm_r(list, force: true)
#
# WARNING: This method causes local vulnerability.
# Read the documentation of rm_r first.
#
def rm_rf(list, noop: nil, verbose: nil, secure: nil)
rm_r list, force: true, noop: noop, verbose: verbose, secure: secure
end
module_function :rm_rf
alias rmtree rm_rf
module_function :rmtree
#
# This method removes a file system entry +path+. +path+ shall be a
# regular file, a directory, or something. If +path+ is a directory,
# remove it recursively. This method is required to avoid TOCTTOU
# (time-of-check-to-time-of-use) local security vulnerability of rm_r.
# #rm_r causes security hole when:
#
# * Parent directory is world writable (including /tmp).
# * Removing directory tree includes world writable directory.
# * The system has symbolic link.
#
# To avoid this security hole, this method applies special preprocess.
# If +path+ is a directory, this method chown(2) and chmod(2) all
# removing directories. This requires the current process is the
# owner of the removing whole directory tree, or is the super user (root).
#
# WARNING: You must ensure that *ALL* parent directories cannot be
# moved by other untrusted users. For example, parent directories
# should not be owned by untrusted users, and should not be world
# writable except when the sticky bit set.
#
# WARNING: Only the owner of the removing directory tree, or Unix super
# user (root) should invoke this method. Otherwise this method does not
# work.
#
# For details of this security vulnerability, see Perl's case:
#
# * https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0448
# * https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452
#
# For fileutils.rb, this vulnerability is reported in [ruby-dev:26100].
#
def remove_entry_secure(path, force = false)
unless fu_have_symlink?
remove_entry path, force
return
end
fullpath = File.expand_path(path)
st = File.lstat(fullpath)
unless st.directory?
File.unlink fullpath
return
end
# is a directory.
parent_st = File.stat(File.dirname(fullpath))
unless parent_st.world_writable?
remove_entry path, force
return
end
unless parent_st.sticky?
raise ArgumentError, "parent directory is world writable, FileUtils#remove_entry_secure does not work; abort: #{path.inspect} (parent directory mode #{'%o' % parent_st.mode})"
end
# freeze tree root
euid = Process.euid
dot_file = fullpath + "/."
begin
File.open(dot_file) {|f|
unless fu_stat_identical_entry?(st, f.stat)
# symlink (TOC-to-TOU attack?)
File.unlink fullpath
return
end
f.chown euid, -1
f.chmod 0700
}
rescue Errno::EISDIR # JRuby in non-native mode can't open files as dirs
File.lstat(dot_file).tap {|fstat|
unless fu_stat_identical_entry?(st, fstat)
# symlink (TOC-to-TOU attack?)
File.unlink fullpath
return
end
File.chown euid, -1, dot_file
File.chmod 0700, dot_file
}
end
unless fu_stat_identical_entry?(st, File.lstat(fullpath))
# TOC-to-TOU attack?
File.unlink fullpath
return
end
# ---- tree root is frozen ----
root = Entry_.new(path)
root.preorder_traverse do |ent|
if ent.directory?
ent.chown euid, -1
ent.chmod 0700
end
end
root.postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end
module_function :remove_entry_secure
def fu_have_symlink? #:nodoc:
File.symlink nil, nil
rescue NotImplementedError
return false
rescue TypeError
return true
end
private_module_function :fu_have_symlink?
def fu_stat_identical_entry?(a, b) #:nodoc:
a.dev == b.dev and a.ino == b.ino
end
private_module_function :fu_stat_identical_entry?
#
# This method removes a file system entry +path+.
# +path+ might be a regular file, a directory, or something.
# If +path+ is a directory, remove it recursively.
#
# See also remove_entry_secure.
#
def remove_entry(path, force = false)
Entry_.new(path).postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end
module_function :remove_entry
#
# Removes a file +path+.
# This method ignores StandardError if +force+ is true.
#
def remove_file(path, force = false)
Entry_.new(path).remove_file
rescue
raise unless force
end
module_function :remove_file
#
# Removes a directory +dir+ and its contents recursively.
# This method ignores StandardError if +force+ is true.
#
def remove_dir(path, force = false)
remove_entry path, force # FIXME?? check if it is a directory
end
module_function :remove_dir
#
# Returns true if the contents of a file +a+ and a file +b+ are identical.
#
# FileUtils.compare_file('somefile', 'somefile') #=> true
# FileUtils.compare_file('/dev/null', '/dev/urandom') #=> false
#
def compare_file(a, b)
return false unless File.size(a) == File.size(b)
File.open(a, 'rb') {|fa|
File.open(b, 'rb') {|fb|
return compare_stream(fa, fb)
}
}
end
module_function :compare_file
alias identical? compare_file
alias cmp compare_file
module_function :identical?
module_function :cmp
#
# Returns true if the contents of a stream +a+ and +b+ are identical.
#
def compare_stream(a, b)
bsize = fu_stream_blksize(a, b)
if RUBY_VERSION > "2.4"
sa = String.new(capacity: bsize)
sb = String.new(capacity: bsize)
else
sa = String.new
sb = String.new
end
begin
a.read(bsize, sa)
b.read(bsize, sb)
return true if sa.empty? && sb.empty?
end while sa == sb
false
end
module_function :compare_stream
#
# If +src+ is not same as +dest+, copies it and changes the permission
# mode to +mode+. If +dest+ is a directory, destination is +dest+/+src+.
# This method removes destination before copy.
#
# FileUtils.install 'ruby', '/usr/local/bin/ruby', mode: 0755, verbose: true
# FileUtils.install 'lib.rb', '/usr/local/lib/ruby/site_ruby', verbose: true
#
def install(src, dest, mode: nil, owner: nil, group: nil, preserve: nil,
noop: nil, verbose: nil)
if verbose
msg = +"install -c"
msg << ' -p' if preserve
msg << ' -m ' << mode_to_s(mode) if mode
msg << " -o #{owner}" if owner
msg << " -g #{group}" if group
msg << ' ' << [src,dest].flatten.join(' ')
fu_output_message msg
end
return if noop
uid = fu_get_uid(owner)
gid = fu_get_gid(group)
fu_each_src_dest(src, dest) do |s, d|
st = File.stat(s)
unless File.exist?(d) and compare_file(s, d)
remove_file d, true
copy_file s, d
File.utime st.atime, st.mtime, d if preserve
File.chmod fu_mode(mode, st), d if mode
File.chown uid, gid, d if uid or gid
end
end
end
module_function :install
def user_mask(target) #:nodoc:
target.each_char.inject(0) do |mask, chr|
case chr
when "u"
mask | 04700
when "g"
mask | 02070
when "o"
mask | 01007
when "a"
mask | 07777
else
raise ArgumentError, "invalid `who' symbol in file mode: #{chr}"
end
end
end
private_module_function :user_mask
def apply_mask(mode, user_mask, op, mode_mask) #:nodoc:
case op
when '='
(mode & ~user_mask) | (user_mask & mode_mask)
when '+'
mode | (user_mask & mode_mask)
when '-'
mode & ~(user_mask & mode_mask)
end
end
private_module_function :apply_mask
def symbolic_modes_to_i(mode_sym, path) #:nodoc:
path = File.stat(path) unless File::Stat === path
mode = path.mode
mode_sym.split(/,/).inject(mode & 07777) do |current_mode, clause|
target, *actions = clause.split(/([=+-])/)
raise ArgumentError, "invalid file mode: #{mode_sym}" if actions.empty?
target = 'a' if target.empty?
user_mask = user_mask(target)
actions.each_slice(2) do |op, perm|
need_apply = op == '='
mode_mask = (perm || '').each_char.inject(0) do |mask, chr|
case chr
when "r"
mask | 0444
when "w"
mask | 0222
when "x"
mask | 0111
when "X"
if path.directory?
mask | 0111
else
mask
end
when "s"
mask | 06000
when "t"
mask | 01000
when "u", "g", "o"
if mask.nonzero?
current_mode = apply_mask(current_mode, user_mask, op, mask)
end
need_apply = false
copy_mask = user_mask(chr)
(current_mode & copy_mask) / (copy_mask & 0111) * (user_mask & 0111)
else
raise ArgumentError, "invalid `perm' symbol in file mode: #{chr}"
end
end
if mode_mask.nonzero? || need_apply
current_mode = apply_mask(current_mode, user_mask, op, mode_mask)
end
end
current_mode
end
end
private_module_function :symbolic_modes_to_i
def fu_mode(mode, path) #:nodoc:
mode.is_a?(String) ? symbolic_modes_to_i(mode, path) : mode
end
private_module_function :fu_mode
def mode_to_s(mode) #:nodoc:
mode.is_a?(String) ? mode : "%o" % mode
end
private_module_function :mode_to_s
#
# Changes permission bits on the named files (in +list+) to the bit pattern
# represented by +mode+.
#
# +mode+ is the symbolic and absolute mode can be used.
#
# Absolute mode is
# FileUtils.chmod 0755, 'somecommand'
# FileUtils.chmod 0644, %w(my.rb your.rb his.rb her.rb)
# FileUtils.chmod 0755, '/usr/bin/ruby', verbose: true
#
# Symbolic mode is
# FileUtils.chmod "u=wrx,go=rx", 'somecommand'
# FileUtils.chmod "u=wr,go=rr", %w(my.rb your.rb his.rb her.rb)
# FileUtils.chmod "u=wrx,go=rx", '/usr/bin/ruby', verbose: true
#
# "a" :: is user, group, other mask.
# "u" :: is user's mask.
# "g" :: is group's mask.
# "o" :: is other's mask.
# "w" :: is write permission.
# "r" :: is read permission.
# "x" :: is execute permission.
# "X" ::
# is execute permission for directories only, must be used in conjunction with "+"
# "s" :: is uid, gid.
# "t" :: is sticky bit.
# "+" :: is added to a class given the specified mode.
# "-" :: Is removed from a given class given mode.
# "=" :: Is the exact nature of the class will be given a specified mode.
def chmod(mode, list, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message sprintf('chmod %s %s', mode_to_s(mode), list.join(' ')) if verbose
return if noop
list.each do |path|
Entry_.new(path).chmod(fu_mode(mode, path))
end
end
module_function :chmod
#
# Changes permission bits on the named files (in +list+)
# to the bit pattern represented by +mode+.
#
# FileUtils.chmod_R 0700, "/tmp/app.#{$$}"
# FileUtils.chmod_R "u=wrx", "/tmp/app.#{$$}"
#
def chmod_R(mode, list, noop: nil, verbose: nil, force: nil)
list = fu_list(list)
fu_output_message sprintf('chmod -R%s %s %s',
(force ? 'f' : ''),
mode_to_s(mode), list.join(' ')) if verbose
return if noop
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chmod(fu_mode(mode, ent.path))
rescue
raise unless force
end
end
end
end
module_function :chmod_R
#
# Changes owner and group on the named files (in +list+)
# to the user +user+ and the group +group+. +user+ and +group+
# may be an ID (Integer/String) or a name (String).
# If +user+ or +group+ is nil, this method does not change
# the attribute.
#
# FileUtils.chown 'root', 'staff', '/usr/local/bin/ruby'
# FileUtils.chown nil, 'bin', Dir.glob('/usr/bin/*'), verbose: true
#
def chown(user, group, list, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message sprintf('chown %s %s',
(group ? "#{user}:#{group}" : user || ':'),
list.join(' ')) if verbose
return if noop
uid = fu_get_uid(user)
gid = fu_get_gid(group)
list.each do |path|
Entry_.new(path).chown uid, gid
end
end
module_function :chown
#
# Changes owner and group on the named files (in +list+)
# to the user +user+ and the group +group+ recursively.
# +user+ and +group+ may be an ID (Integer/String) or
# a name (String). If +user+ or +group+ is nil, this
# method does not change the attribute.
#
# FileUtils.chown_R 'www', 'www', '/var/www/htdocs'
# FileUtils.chown_R 'cvs', 'cvs', '/var/cvs', verbose: true
#
def chown_R(user, group, list, noop: nil, verbose: nil, force: nil)
list = fu_list(list)
fu_output_message sprintf('chown -R%s %s %s',
(force ? 'f' : ''),
(group ? "#{user}:#{group}" : user || ':'),
list.join(' ')) if verbose
return if noop
uid = fu_get_uid(user)
gid = fu_get_gid(group)
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chown uid, gid
rescue
raise unless force
end
end
end
end
module_function :chown_R
def fu_get_uid(user) #:nodoc:
return nil unless user
case user
when Integer
user
when /\A\d+\z/
user.to_i
else
require 'etc'
Etc.getpwnam(user) ? Etc.getpwnam(user).uid : nil
end
end
private_module_function :fu_get_uid
def fu_get_gid(group) #:nodoc:
return nil unless group
case group
when Integer
group
when /\A\d+\z/
group.to_i
else
require 'etc'
Etc.getgrnam(group) ? Etc.getgrnam(group).gid : nil
end
end
private_module_function :fu_get_gid
#
# Updates modification time (mtime) and access time (atime) of file(s) in
# +list+. Files are created if they don't exist.
#
# FileUtils.touch 'timestamp'
# FileUtils.touch Dir.glob('*.c'); system 'make'
#
def touch(list, noop: nil, verbose: nil, mtime: nil, nocreate: nil)
list = fu_list(list)
t = mtime
if verbose
fu_output_message "touch #{nocreate ? '-c ' : ''}#{t ? t.strftime('-t %Y%m%d%H%M.%S ') : ''}#{list.join ' '}"
end
return if noop
list.each do |path|
created = nocreate
begin
File.utime(t, t, path)
rescue Errno::ENOENT
raise if created
File.open(path, 'a') {
;
}
created = true
retry if t
end
end
end
module_function :touch
private
module StreamUtils_
private
case (defined?(::RbConfig) ? ::RbConfig::CONFIG['host_os'] : ::RUBY_PLATFORM)
when /mswin|mingw/
def fu_windows?; true end
else
def fu_windows?; false end
end
def fu_copy_stream0(src, dest, blksize = nil) #:nodoc:
IO.copy_stream(src, dest)
end
def fu_stream_blksize(*streams)
streams.each do |s|
next unless s.respond_to?(:stat)
size = fu_blksize(s.stat)
return size if size
end
fu_default_blksize()
end
def fu_blksize(st)
s = st.blksize
return nil unless s
return nil if s == 0
s
end
def fu_default_blksize
1024
end
end
include StreamUtils_
extend StreamUtils_
class Entry_ #:nodoc: internal use only
include StreamUtils_
def initialize(a, b = nil, deref = false)
@prefix = @rel = @path = nil
if b
@prefix = a
@rel = b
else
@path = a
end
@deref = deref
@stat = nil
@lstat = nil
end
def inspect
"\#<#{self.class} #{path()}>"
end
def path
if @path
File.path(@path)
else
join(@prefix, @rel)
end
end
def prefix
@prefix || @path
end
def rel
@rel
end
def dereference?
@deref
end
def exist?
begin
lstat
true
rescue Errno::ENOENT
false
end
end
def file?
s = lstat!
s and s.file?
end
def directory?
s = lstat!
s and s.directory?
end
def symlink?
s = lstat!
s and s.symlink?
end
def chardev?
s = lstat!
s and s.chardev?
end
def blockdev?
s = lstat!
s and s.blockdev?
end
def socket?
s = lstat!
s and s.socket?
end
def pipe?
s = lstat!
s and s.pipe?
end
S_IF_DOOR = 0xD000
def door?
s = lstat!
s and (s.mode & 0xF000 == S_IF_DOOR)
end
def entries
opts = {}
opts[:encoding] = fu_windows? ? ::Encoding::UTF_8 : path.encoding
files = if Dir.respond_to?(:children)
Dir.children(path, **opts)
else
Dir.entries(path(), **opts)
.reject {|n| n == '.' or n == '..' }
end
untaint = RUBY_VERSION < '2.7'
files.map {|n| Entry_.new(prefix(), join(rel(), untaint ? n.untaint : n)) }
end
def stat
return @stat if @stat
if lstat() and lstat().symlink?
@stat = File.stat(path())
else
@stat = lstat()
end
@stat
end
def stat!
return @stat if @stat
if lstat! and lstat!.symlink?
@stat = File.stat(path())
else
@stat = lstat!
end
@stat
rescue SystemCallError
nil
end
def lstat
if dereference?
@lstat ||= File.stat(path())
else
@lstat ||= File.lstat(path())
end
end
def lstat!
lstat()
rescue SystemCallError
nil
end
def chmod(mode)
if symlink?
File.lchmod mode, path() if have_lchmod?
else
File.chmod mode, path()
end
rescue Errno::EOPNOTSUPP
end
def chown(uid, gid)
if symlink?
File.lchown uid, gid, path() if have_lchown?
else
File.chown uid, gid, path()
end
end
def link(dest)
case
when directory?
if !File.exist?(dest) and descendant_directory?(dest, path)
raise ArgumentError, "cannot link directory %s to itself %s" % [path, dest]
end
begin
Dir.mkdir dest
rescue
raise unless File.directory?(dest)
end
else
File.link path(), dest
end
end
def copy(dest)
lstat
case
when file?
copy_file dest
when directory?
if !File.exist?(dest) and descendant_directory?(dest, path)
raise ArgumentError, "cannot copy directory %s to itself %s" % [path, dest]
end
begin
Dir.mkdir dest
rescue
raise unless File.directory?(dest)
end
when symlink?
File.symlink File.readlink(path()), dest
when chardev?, blockdev?
raise "cannot handle device file"
when socket?
begin
require 'socket'
rescue LoadError
raise "cannot handle socket"
else
raise "cannot handle socket" unless defined?(UNIXServer)
end
UNIXServer.new(dest).close
File.chmod lstat().mode, dest
when pipe?
raise "cannot handle FIFO" unless File.respond_to?(:mkfifo)
File.mkfifo dest, lstat().mode
when door?
raise "cannot handle door: #{path()}"
else
raise "unknown file type: #{path()}"
end
end
def copy_file(dest)
File.open(path()) do |s|
File.open(dest, 'wb', s.stat.mode) do |f|
IO.copy_stream(s, f)
end
end
end
def copy_metadata(path)
st = lstat()
if !st.symlink?
File.utime st.atime, st.mtime, path
end
mode = st.mode
begin
if st.symlink?
begin
File.lchown st.uid, st.gid, path
rescue NotImplementedError
end
else
File.chown st.uid, st.gid, path
end
rescue Errno::EPERM, Errno::EACCES
# clear setuid/setgid
mode &= 01777
end
if st.symlink?
begin
File.lchmod mode, path
rescue NotImplementedError, Errno::EOPNOTSUPP
end
else
File.chmod mode, path
end
end
def remove
if directory?
remove_dir1
else
remove_file
end
end
def remove_dir1
platform_support {
Dir.rmdir path().chomp(?/)
}
end
def remove_file
platform_support {
File.unlink path
}
end
def platform_support
return yield unless fu_windows?
first_time_p = true
begin
yield
rescue Errno::ENOENT
raise
rescue => err
if first_time_p
first_time_p = false
begin
File.chmod 0700, path() # Windows does not have symlink
retry
rescue SystemCallError
end
end
raise err
end
end
def preorder_traverse
stack = [self]
while ent = stack.pop
yield ent
stack.concat ent.entries.reverse if ent.directory?
end
end
alias traverse preorder_traverse
def postorder_traverse
if directory?
entries().each do |ent|
ent.postorder_traverse do |e|
yield e
end
end
end
ensure
yield self
end
def wrap_traverse(pre, post)
pre.call self
if directory?
entries.each do |ent|
ent.wrap_traverse pre, post
end
end
post.call self
end
private
@@fileutils_rb_have_lchmod = nil
def have_lchmod?
# This is not MT-safe, but it does not matter.
if @@fileutils_rb_have_lchmod == nil
@@fileutils_rb_have_lchmod = check_have_lchmod?
end
@@fileutils_rb_have_lchmod
end
def check_have_lchmod?
return false unless File.respond_to?(:lchmod)
File.lchmod 0
return true
rescue NotImplementedError
return false
end
@@fileutils_rb_have_lchown = nil
def have_lchown?
# This is not MT-safe, but it does not matter.
if @@fileutils_rb_have_lchown == nil
@@fileutils_rb_have_lchown = check_have_lchown?
end
@@fileutils_rb_have_lchown
end
def check_have_lchown?
return false unless File.respond_to?(:lchown)
File.lchown nil, nil
return true
rescue NotImplementedError
return false
end
def join(dir, base)
return File.path(dir) if not base or base == '.'
return File.path(base) if not dir or dir == '.'
begin
File.join(dir, base)
rescue EncodingError
if fu_windows?
File.join(dir.encode(::Encoding::UTF_8), base.encode(::Encoding::UTF_8))
else
raise
end
end
end
if File::ALT_SEPARATOR
DIRECTORY_TERM = "(?=[/#{Regexp.quote(File::ALT_SEPARATOR)}]|\\z)"
else
DIRECTORY_TERM = "(?=/|\\z)"
end
def descendant_directory?(descendant, ascendant)
if File::FNM_SYSCASE.nonzero?
File.expand_path(File.dirname(descendant)).casecmp(File.expand_path(ascendant)) == 0
else
File.expand_path(File.dirname(descendant)) == File.expand_path(ascendant)
end
end
end # class Entry_
def fu_list(arg) #:nodoc:
[arg].flatten.map {|path| File.path(path) }
end
private_module_function :fu_list
def fu_each_src_dest(src, dest) #:nodoc:
fu_each_src_dest0(src, dest) do |s, d|
raise ArgumentError, "same file: #{s} and #{d}" if fu_same?(s, d)
yield s, d
end
end
private_module_function :fu_each_src_dest
def fu_each_src_dest0(src, dest) #:nodoc:
if tmp = Array.try_convert(src)
tmp.each do |s|
s = File.path(s)
yield s, File.join(dest, File.basename(s))
end
else
src = File.path(src)
if File.directory?(dest)
yield src, File.join(dest, File.basename(src))
else
yield src, File.path(dest)
end
end
end
private_module_function :fu_each_src_dest0
def fu_same?(a, b) #:nodoc:
File.identical?(a, b)
end
private_module_function :fu_same?
def fu_output_message(msg) #:nodoc:
output = @fileutils_output if defined?(@fileutils_output)
output ||= $stdout
if defined?(@fileutils_label)
msg = @fileutils_label + msg
end
output.puts msg
end
private_module_function :fu_output_message
# This hash table holds command options.
OPT_TABLE = {} #:nodoc: internal use only
(private_instance_methods & methods(false)).inject(OPT_TABLE) {|tbl, name|
(tbl[name.to_s] = instance_method(name).parameters).map! {|t, n| n if t == :key}.compact!
tbl
}
public
#
# Returns an Array of names of high-level methods that accept any keyword
# arguments.
#
# p FileUtils.commands #=> ["chmod", "cp", "cp_r", "install", ...]
#
def self.commands
OPT_TABLE.keys
end
#
# Returns an Array of option names.
#
# p FileUtils.options #=> ["noop", "force", "verbose", "preserve", "mode"]
#
def self.options
OPT_TABLE.values.flatten.uniq.map {|sym| sym.to_s }
end
#
# Returns true if the method +mid+ have an option +opt+.
#
# p FileUtils.have_option?(:cp, :noop) #=> true
# p FileUtils.have_option?(:rm, :force) #=> true
# p FileUtils.have_option?(:rm, :preserve) #=> false
#
def self.have_option?(mid, opt)
li = OPT_TABLE[mid.to_s] or raise ArgumentError, "no such method: #{mid}"
li.include?(opt)
end
#
# Returns an Array of option names of the method +mid+.
#
# p FileUtils.options_of(:rm) #=> ["noop", "verbose", "force"]
#
def self.options_of(mid)
OPT_TABLE[mid.to_s].map {|sym| sym.to_s }
end
#
# Returns an Array of methods names which have the option +opt+.
#
# p FileUtils.collect_method(:preserve) #=> ["cp", "cp_r", "copy", "install"]
#
def self.collect_method(opt)
OPT_TABLE.keys.select {|m| OPT_TABLE[m].include?(opt) }
end
private
LOW_METHODS = singleton_methods(false) - collect_method(:noop).map(&:intern) # :nodoc:
module LowMethods # :nodoc: internal use only
private
def _do_nothing(*)end
::FileUtils::LOW_METHODS.map {|name| alias_method name, :_do_nothing}
end
METHODS = singleton_methods() - [:private_module_function, # :nodoc:
:commands, :options, :have_option?, :options_of, :collect_method]
#
# This module has all methods of FileUtils module, but it outputs messages
# before acting. This equates to passing the <tt>:verbose</tt> flag to
# methods in FileUtils.
#
module Verbose
include FileUtils
names = ::FileUtils.collect_method(:verbose)
names.each do |name|
module_eval(<<-EOS, __FILE__, __LINE__ + 1)
def #{name}(*args, **options)
super(*args, **options, verbose: true)
end
EOS
end
private(*names)
extend self
class << self
public(*::FileUtils::METHODS)
end
end
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> flag
# to methods in FileUtils.
#
module NoWrite
include FileUtils
include LowMethods
names = ::FileUtils.collect_method(:noop)
names.each do |name|
module_eval(<<-EOS, __FILE__, __LINE__ + 1)
def #{name}(*args, **options)
super(*args, **options, noop: true)
end
EOS
end
private(*names)
extend self
class << self
public(*::FileUtils::METHODS)
end
end
#
# This module has all methods of FileUtils module, but never changes
# files/directories, with printing message before acting.
# This equates to passing the <tt>:noop</tt> and <tt>:verbose</tt> flag
# to methods in FileUtils.
#
module DryRun
include FileUtils
include LowMethods
names = ::FileUtils.collect_method(:noop)
names.each do |name|
module_eval(<<-EOS, __FILE__, __LINE__ + 1)
def #{name}(*args, **options)
super(*args, **options, noop: true, verbose: true)
end
EOS
end
private(*names)
extend self
class << self
public(*::FileUtils::METHODS)
end
end
end