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fileutils.rb
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# frozen_string_literal: false # # = 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| .... } # 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(old, new, options) # FileUtils.ln(list, destdir, options) # FileUtils.ln_s(old, new, options) # FileUtils.ln_s(list, destdir, options) # FileUtils.ln_sf(src, dest, 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, mode = <src's>, 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) # # The <tt>options</tt> parameter is a hash of options, taken from the list # <tt>:force</tt>, <tt>:noop</tt>, <tt>:preserve</tt>, and <tt>:verbose</tt>. # <tt>:noop</tt> means that no changes are made. The other two are obvious. # Each method documents the options that it honours. # # 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 any option: # # FileUtils.copy_entry(src, dest, preserve = false, dereference = 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 def self.private_module_function(name) #:nodoc: module_function name private_class_method name end # This hash table holds command options. OPT_TABLE = {} #:nodoc: internal use only # # Options: (none) # # Returns the name of the current directory. # def pwd Dir.pwd end module_function :pwd alias getwd pwd module_function :getwd # # Options: verbose # # Changes the current directory to the directory +dir+. # # If this method is called with block, resumes to the old # working directory after the block execution finished. # # FileUtils.cd('/', :verbose => true) # chdir and report it # # FileUtils.cd('/') do # chdir # [...] # do something # end # return to original directory # def cd(dir, options = {}, &block) # :yield: dir fu_check_options options, OPT_TABLE['cd'] fu_output_message "cd #{dir}" if options[:verbose] Dir.chdir(dir, &block) fu_output_message 'cd -' if options[:verbose] and block end module_function :cd alias chdir cd module_function :chdir OPT_TABLE['cd'] = OPT_TABLE['chdir'] = [:verbose] # # Options: (none) # # 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) dir == '/' ? dir : dir.chomp(?/) end private_module_function :remove_trailing_slash # # Options: mode noop verbose # # 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, options = {}) fu_check_options options, OPT_TABLE['mkdir'] list = fu_list(list) fu_output_message "mkdir #{options[:mode] ? ('-m %03o ' % options[:mode]) : ''}#{list.join ' '}" if options[:verbose] return if options[:noop] list.each do |dir| fu_mkdir dir, options[:mode] end end module_function :mkdir OPT_TABLE['mkdir'] = [:mode, :noop, :verbose] # # Options: mode noop verbose # # Creates a directory and all its parent directories. # For example, # # FileUtils.mkdir_p '/usr/local/lib/ruby' # # causes to make following directories, if it does 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, options = {}) fu_check_options options, OPT_TABLE['mkdir_p'] list = fu_list(list) fu_output_message "mkdir -p #{options[:mode] ? ('-m %03o ' % options[:mode]) : ''}#{list.join ' '}" if options[:verbose] return *list if options[:noop] list.map {|path| remove_trailing_slash(path)}.each do |path| # optimize for the most common case begin fu_mkdir path, options[: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) end stack.pop # root directory should exist stack.reverse_each do |dir| begin fu_mkdir dir, options[: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 OPT_TABLE['mkdir_p'] = OPT_TABLE['mkpath'] = OPT_TABLE['makedirs'] = [:mode, :noop, :verbose] 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 # # Options: parents, noop, verbose # # 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, options = {}) fu_check_options options, OPT_TABLE['rmdir'] list = fu_list(list) parents = options[:parents] fu_output_message "rmdir #{parents ? '-p ' : ''}#{list.join ' '}" if options[:verbose] return if options[:noop] list.each do |dir| begin Dir.rmdir(dir = remove_trailing_slash(dir)) if parents until (parent = File.dirname(dir)) == '.' or parent == dir dir = parent Dir.rmdir(dir) end end rescue Errno::ENOTEMPTY, Errno::EEXIST, Errno::ENOENT end end end module_function :rmdir OPT_TABLE['rmdir'] = [:parents, :noop, :verbose] # # Options: force noop verbose # # <b><tt>ln(old, new, options = {})</tt></b> # # Creates a hard link +new+ which points to +old+. # If +new+ already exists and it is a directory, creates a link +new/old+. # If +new+ already exists and it is not a directory, raises Errno::EEXIST. # But if :force option is set, overwrite +new+. # # FileUtils.ln 'gcc', 'cc', :verbose => true # FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs' # # <b><tt>ln(list, destdir, options = {})</tt></b> # # Creates several hard links in a directory, with each one pointing to the # item in +list+. If +destdir+ is not a directory, raises Errno::ENOTDIR. # # include FileUtils # cd '/sbin' # FileUtils.ln %w(cp mv mkdir), '/bin' # Now /sbin/cp and /bin/cp are linked. # def ln(src, dest, options = {}) fu_check_options options, OPT_TABLE['ln'] fu_output_message "ln#{options[:force] ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose] return if options[:noop] fu_each_src_dest0(src, dest) do |s,d| remove_file d, true if options[:force] File.link s, d end end module_function :ln alias link ln module_function :link OPT_TABLE['ln'] = OPT_TABLE['link'] = [:force, :noop, :verbose] # # Options: force noop verbose # # <b><tt>ln_s(old, new, options = {})</tt></b> # # Creates a symbolic link +new+ which points to +old+. If +new+ already # exists and it is a directory, creates a symbolic link +new/old+. If +new+ # already exists and it is not a directory, raises Errno::EEXIST. But if # :force option is set, overwrite +new+. # # FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby' # FileUtils.ln_s 'verylongsourcefilename.c', 'c', :force => true # # <b><tt>ln_s(list, destdir, options = {})</tt></b> # # Creates several symbolic links in a directory, with each one pointing to the # item in +list+. If +destdir+ is not a directory, raises Errno::ENOTDIR. # # If +destdir+ is not a directory, raises Errno::ENOTDIR. # # FileUtils.ln_s Dir.glob('bin/*.rb'), '/home/aamine/bin' # def ln_s(src, dest, options = {}) fu_check_options options, OPT_TABLE['ln_s'] fu_output_message "ln -s#{options[:force] ? 'f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose] return if options[:noop] fu_each_src_dest0(src, dest) do |s,d| remove_file d, true if options[:force] File.symlink s, d end end module_function :ln_s alias symlink ln_s module_function :symlink OPT_TABLE['ln_s'] = OPT_TABLE['symlink'] = [:force, :noop, :verbose] # # Options: noop verbose # # Same as # #ln_s(src, dest, :force => true) # def ln_sf(src, dest, options = {}) fu_check_options options, OPT_TABLE['ln_sf'] options = options.dup options[:force] = true ln_s src, dest, options end module_function :ln_sf OPT_TABLE['ln_sf'] = [:noop, :verbose] # # Options: preserve noop verbose # # 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, options = {}) fu_check_options options, OPT_TABLE['cp'] fu_output_message "cp#{options[:preserve] ? ' -p' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose] return if options[:noop] fu_each_src_dest(src, dest) do |s, d| copy_file s, d, options[:preserve] end end module_function :cp alias copy cp module_function :copy OPT_TABLE['cp'] = OPT_TABLE['copy'] = [:preserve, :noop, :verbose] # # Options: preserve noop verbose dereference_root remove_destination # # 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. # # # Installing Ruby library "mylib" under the site_ruby # FileUtils.rm_r site_ruby + '/mylib', :force # 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/aamine/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, options = {}) fu_check_options options, OPT_TABLE['cp_r'] fu_output_message "cp -r#{options[:preserve] ? 'p' : ''}#{options[:remove_destination] ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose] return if options[:noop] options = options.dup options[:dereference_root] = true unless options.key?(:dereference_root) fu_each_src_dest(src, dest) do |s, d| copy_entry s, d, options[:preserve], options[:dereference_root], options[:remove_destination] end end module_function :cp_r OPT_TABLE['cp_r'] = [:preserve, :noop, :verbose, :dereference_root, :remove_destination] # # 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) Entry_.new(src, nil, dereference_root).wrap_traverse(proc do |ent| destent = Entry_.new(dest, ent.rel, false) File.unlink destent.path if remove_destination && File.file?(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 # # Options: force noop verbose # # 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/aamine/.trash/' # FileUtils.mv Dir.glob('test*.rb'), 'test', :noop => true, :verbose => true # def mv(src, dest, options = {}) fu_check_options options, OPT_TABLE['mv'] fu_output_message "mv#{options[:force] ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose] return if options[: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 else destent.remove_file if rename_cannot_overwrite_file? end end begin File.rename s, d rescue Errno::EXDEV copy_entry s, d, true if options[:secure] remove_entry_secure s, options[:force] else remove_entry s, options[:force] end end rescue SystemCallError raise unless options[:force] end end end module_function :mv alias move mv module_function :move OPT_TABLE['mv'] = OPT_TABLE['move'] = [:force, :noop, :verbose, :secure] def rename_cannot_overwrite_file? #:nodoc: /emx/ =~ RUBY_PLATFORM end private_module_function :rename_cannot_overwrite_file? # # Options: force noop verbose # # 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, options = {}) fu_check_options options, OPT_TABLE['rm'] list = fu_list(list) fu_output_message "rm#{options[:force] ? ' -f' : ''} #{list.join ' '}" if options[:verbose] return if options[:noop] list.each do |path| remove_file path, options[:force] end end module_function :rm alias remove rm module_function :remove OPT_TABLE['rm'] = OPT_TABLE['remove'] = [:force, :noop, :verbose] # # Options: noop verbose # # Equivalent to # # #rm(list, :force => true) # def rm_f(list, options = {}) fu_check_options options, OPT_TABLE['rm_f'] options = options.dup options[:force] = true rm list, options end module_function :rm_f alias safe_unlink rm_f module_function :safe_unlink OPT_TABLE['rm_f'] = OPT_TABLE['safe_unlink'] = [:noop, :verbose] # # Options: force noop verbose secure # # 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 '/', :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 :secure=>false. # # NOTE: This method calls #remove_entry_secure if :secure option is set. # See also #remove_entry_secure. # def rm_r(list, options = {}) fu_check_options options, OPT_TABLE['rm_r'] # options[:secure] = true unless options.key?(:secure) list = fu_list(list) fu_output_message "rm -r#{options[:force] ? 'f' : ''} #{list.join ' '}" if options[:verbose] return if options[:noop] list.each do |path| if options[:secure] remove_entry_secure path, options[:force] else remove_entry path, options[:force] end end end module_function :rm_r OPT_TABLE['rm_r'] = [:force, :noop, :verbose, :secure] # # Options: noop verbose secure # # Equivalent to # # #rm_r(list, :force => true) # # WARNING: This method causes local vulnerability. # Read the documentation of #rm_r first. # def rm_rf(list, options = {}) fu_check_options options, OPT_TABLE['rm_rf'] options = options.dup options[:force] = true rm_r list, options end module_function :rm_rf alias rmtree rm_rf module_function :rmtree OPT_TABLE['rm_rf'] = OPT_TABLE['rmtree'] = [:noop, :verbose, :secure] # # 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: # # http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0448 # http://www.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 File.open(fullpath + '/.') {|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 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('/bin/cp', '/bin/mv') #=> maybe 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) sa = "" sb = "" 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 # # Options: mode preserve noop verbose # # 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, options = {}) fu_check_options options, OPT_TABLE['install'] fu_output_message "install -c#{options[:preserve] && ' -p'}#{options[:mode] ? (' -m 0%o' % options[:mode]) : ''} #{[src,dest].flatten.join ' '}" if options[:verbose] return if options[:noop] 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 options[:preserve] File.chmod options[:mode], d if options[:mode] end end end module_function :install OPT_TABLE['install'] = [:mode, :preserve, :noop, :verbose] 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) 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: mode_sym.split(/,/).inject(File.stat(path).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 FileTest.directory? path 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 # # Options: noop verbose # # 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, options = {}) fu_check_options options, OPT_TABLE['chmod'] list = fu_list(list) fu_output_message sprintf('chmod %s %s', mode_to_s(mode), list.join(' ')) if options[:verbose] return if options[:noop] list.each do |path| Entry_.new(path).chmod(fu_mode(mode, path)) end end module_function :chmod OPT_TABLE['chmod'] = [:noop, :verbose] # # Options: noop verbose force # # 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, options = {}) fu_check_options options, OPT_TABLE['chmod_R'] list = fu_list(list) fu_output_message sprintf('chmod -R%s %s %s', (options[:force] ? 'f' : ''), mode_to_s(mode), list.join(' ')) if options[:verbose] return if options[:noop] list.each do |root| Entry_.new(root).traverse do |ent| begin ent.chmod(fu_mode(mode, ent.path)) rescue raise unless options[:force] end end end end module_function :chmod_R OPT_TABLE['chmod_R'] = [:noop, :verbose, :force] # # Options: noop verbose # # 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, options = {}) fu_check_options options, OPT_TABLE['chown'] list = fu_list(list) fu_output_message sprintf('chown %s %s', (group ? "#{user}:#{group}" : user || ':'), list.join(' ')) if options[:verbose] return if options[: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 OPT_TABLE['chown'] = [:noop, :verbose] # # Options: noop verbose force # # 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, options = {}) fu_check_options options, OPT_TABLE['chown_R'] list = fu_list(list) fu_output_message sprintf('chown -R%s %s %s', (options[:force] ? 'f' : ''), (group ? "#{user}:#{group}" : user || ':'), list.join(' ')) if options[:verbose] return if options[: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 options[:force] end end end end module_function :chown_R OPT_TABLE['chown_R'] = [:noop, :verbose, :force] begin require 'etc' rescue LoadError # rescue LoadError for miniruby end def fu_get_uid(user) #:nodoc: return nil unless user case user when Integer user when /\A\d+\z/ user.to_i else 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 Etc.getgrnam(group) ? Etc.getgrnam(group).gid : nil end end private_module_function :fu_get_gid # # Options: noop verbose mtime nocreate # # 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, options = {}) fu_check_options options, OPT_TABLE['touch'] list = fu_list(list) nocreate = options[:nocreate] t = options[:mtime] if options[:verbose] fu_output_message "touch #{nocreate ? '-c ' : ''}#{t ? t.strftime('-t %Y%m%d%H%M.%S ') : ''}#{list.join ' '}" end return if options[: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 OPT_TABLE['touch'] = [:noop, :verbose, :mtime, :nocreate] private module StreamUtils_ private def fu_windows? /mswin|mingw|bccwin|emx/ =~ RUBY_PLATFORM 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] = ::Encoding::UTF_8 if fu_windows? Dir.entries(path(), opts)\ .reject {|n| n == '.' or n == '..' }\ .map {|n| Entry_.new(prefix(), join(rel(), n.untaint)) } 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 end def chown(uid, gid) if symlink? File.lchown uid, gid, path() if have_lchown? else File.chown uid, gid, path() end end def copy(dest) 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? raise "cannot handle device file" unless File.respond_to?(:mknod) mknod dest, ?c, 0666, lstat().rdev when blockdev? raise "cannot handle device file" unless File.respond_to?(:mknod) mknod dest, ?b, 0666, lstat().rdev when socket? raise "cannot handle socket" unless File.respond_to?(:mknod) mknod dest, nil, lstat().mode, 0 when pipe? raise "cannot handle FIFO" unless File.respond_to?(:mkfifo) mkfifo dest, 0666 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 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 # clear setuid/setgid if st.symlink? begin File.lchmod st.mode & 01777, path rescue NotImplementedError end else File.chmod st.mode & 01777, path end else if st.symlink? begin File.lchmod st.mode, path rescue NotImplementedError end else File.chmod st.mode, path end 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 == '.' File.join(dir, base) end if File::ALT_SEPARATOR DIRECTORY_TERM = "(?=[/#{Regexp.quote(File::ALT_SEPARATOR)}]|\\z)".freeze else DIRECTORY_TERM = "(?=/|\\z)".freeze end SYSCASE = File::FNM_SYSCASE.nonzero? ? "-i" : "" def descendant_directory?(descendant, ascendant) /\A(?#{SYSCASE}:#{Regexp.quote(ascendant)})#{DIRECTORY_TERM}/ =~ File.dirname(descendant) 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_check_options(options, optdecl) #:nodoc: h = options.dup optdecl.each do |opt| h.delete opt end raise ArgumentError, "no such option: #{h.keys.join(' ')}" unless h.empty? end private_module_function :fu_check_options def fu_update_option(args, new) #:nodoc: if tmp = Hash.try_convert(args.last) args[-1] = tmp.dup.update(new) else args.push new end args end private_module_function :fu_update_option @fileutils_output = $stderr @fileutils_label = '' def fu_output_message(msg) #:nodoc: @fileutils_output ||= $stderr @fileutils_label ||= '' @fileutils_output.puts @fileutils_label + msg end private_module_function :fu_output_message # # Returns an Array of method names which have any options. # # p FileUtils.commands #=> ["chmod", "cp", "cp_r", "install", ...] # def FileUtils.commands OPT_TABLE.keys end # # Returns an Array of option names. # # p FileUtils.options #=> ["noop", "force", "verbose", "preserve", "mode"] # def FileUtils.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 FileUtils.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 FileUtils.options_of(mid) OPT_TABLE[mid.to_s].map {|sym| sym.to_s } end # # Returns an Array of method names which have the option +opt+. # # p FileUtils.collect_method(:preserve) #=> ["cp", "cp_r", "copy", "install"] # def FileUtils.collect_method(opt) OPT_TABLE.keys.select {|m| OPT_TABLE[m].include?(opt) } end LOW_METHODS = singleton_methods(false) - collect_method(:noop).map(&:intern) module LowMethods module_eval("private\n" + ::FileUtils::LOW_METHODS.map {|name| "def #{name}(*)end"}.join("\n"), __FILE__, __LINE__) end METHODS = singleton_methods() - [:private_module_function, :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 @fileutils_output = $stderr @fileutils_label = '' ::FileUtils.collect_method(:verbose).each do |name| module_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{name}(*args) super(*fu_update_option(args, :verbose => true)) end private :#{name} EOS end extend self class << self ::FileUtils::METHODS.each do |m| public m end 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 @fileutils_output = $stderr @fileutils_label = '' ::FileUtils.collect_method(:noop).each do |name| module_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{name}(*args) super(*fu_update_option(args, :noop => true)) end private :#{name} EOS end extend self class << self ::FileUtils::METHODS.each do |m| public m end 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 @fileutils_output = $stderr @fileutils_label = '' ::FileUtils.collect_method(:noop).each do |name| module_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{name}(*args) super(*fu_update_option(args, :noop => true, :verbose => true)) end private :#{name} EOS end extend self class << self ::FileUtils::METHODS.each do |m| public m end end end end