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# frozen_string_literal: true begin require 'rbconfig' rescue LoadError # for make rjit-headers end # Namespace for file utility methods for copying, moving, removing, etc. # # == What's Here # # First, what’s elsewhere. \Module \FileUtils: # # - Inherits from {class Object}[rdoc-ref:Object]. # - Supplements {class File}[rdoc-ref:File] # (but is not included or extended there). # # Here, module \FileUtils provides methods that are useful for: # # - {Creating}[rdoc-ref:FileUtils@Creating]. # - {Deleting}[rdoc-ref:FileUtils@Deleting]. # - {Querying}[rdoc-ref:FileUtils@Querying]. # - {Setting}[rdoc-ref:FileUtils@Setting]. # - {Comparing}[rdoc-ref:FileUtils@Comparing]. # - {Copying}[rdoc-ref:FileUtils@Copying]. # - {Moving}[rdoc-ref:FileUtils@Moving]. # - {Options}[rdoc-ref:FileUtils@Options]. # # === Creating # # - ::mkdir: Creates directories. # - ::mkdir_p, ::makedirs, ::mkpath: Creates directories, # also creating ancestor directories as needed. # - ::link_entry: Creates a hard link. # - ::ln, ::link: Creates hard links. # - ::ln_s, ::symlink: Creates symbolic links. # - ::ln_sf: Creates symbolic links, overwriting if necessary. # - ::ln_sr: Creates symbolic links relative to targets # # === Deleting # # - ::remove_dir: Removes a directory and its descendants. # - ::remove_entry: Removes an entry, including its descendants if it is a directory. # - ::remove_entry_secure: Like ::remove_entry, but removes securely. # - ::remove_file: Removes a file entry. # - ::rm, ::remove: Removes entries. # - ::rm_f, ::safe_unlink: Like ::rm, but removes forcibly. # - ::rm_r: Removes entries and their descendants. # - ::rm_rf, ::rmtree: Like ::rm_r, but removes forcibly. # - ::rmdir: Removes directories. # # === Querying # # - ::pwd, ::getwd: Returns the path to the working directory. # - ::uptodate?: Returns whether a given entry is newer than given other entries. # # === Setting # # - ::cd, ::chdir: Sets the working directory. # - ::chmod: Sets permissions for an entry. # - ::chmod_R: Sets permissions for an entry and its descendants. # - ::chown: Sets the owner and group for entries. # - ::chown_R: Sets the owner and group for entries and their descendants. # - ::touch: Sets modification and access times for entries, # creating if necessary. # # === Comparing # # - ::compare_file, ::cmp, ::identical?: Returns whether two entries are identical. # - ::compare_stream: Returns whether two streams are identical. # # === Copying # # - ::copy_entry: Recursively copies an entry. # - ::copy_file: Copies an entry. # - ::copy_stream: Copies a stream. # - ::cp, ::copy: Copies files. # - ::cp_lr: Recursively creates hard links. # - ::cp_r: Recursively copies files, retaining mode, owner, and group. # - ::install: Recursively copies files, optionally setting mode, # owner, and group. # # === Moving # # - ::mv, ::move: Moves entries. # # === Options # # - ::collect_method: Returns the names of methods that accept a given option. # - ::commands: Returns the names of methods that accept options. # - ::have_option?: Returns whether a given method accepts a given option. # - ::options: Returns all option names. # - ::options_of: Returns the names of the options for a given method. # # == Path Arguments # # Some methods in \FileUtils accept _path_ arguments, # which are interpreted as paths to filesystem entries: # # - If the argument is a string, that value is the path. # - If the argument has method +:to_path+, it is converted via that method. # - If the argument has method +:to_str+, it is converted via that method. # # == About the Examples # # Some examples here involve trees of file entries. # For these, we sometimes display trees using the # {tree command-line utility}[https://en.wikipedia.org/wiki/Tree_(command)], # which is a recursive directory-listing utility that produces # a depth-indented listing of files and directories. # # We use a helper method to launch the command and control the format: # # def tree(dirpath = '.') # command = "tree --noreport --charset=ascii #{dirpath}" # system(command) # end # # To illustrate: # # tree('src0') # # => src0 # # |-- sub0 # # | |-- src0.txt # # | `-- src1.txt # # `-- sub1 # # |-- src2.txt # # `-- src3.txt # # == Avoiding the TOCTTOU Vulnerability # # For certain methods that recursively remove entries, # there is a potential vulnerability called the # {Time-of-check to time-of-use}[https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use], # or TOCTTOU, vulnerability that can exist when: # # - An ancestor directory of the entry at the target path is world writable; # such directories include <tt>/tmp</tt>. # - The directory tree at the target path includes: # # - A world-writable descendant directory. # - A symbolic link. # # To avoid that vulnerability, you can use this method to remove entries: # # - FileUtils.remove_entry_secure: removes recursively # if the target path points to a directory. # # Also available are these methods, # each of which calls \FileUtils.remove_entry_secure: # # - FileUtils.rm_r with keyword argument <tt>secure: true</tt>. # - FileUtils.rm_rf with keyword argument <tt>secure: true</tt>. # # Finally, this method for moving entries calls \FileUtils.remove_entry_secure # if the source and destination are on different file systems # (which means that the "move" is really a copy and remove): # # - FileUtils.mv with keyword argument <tt>secure: true</tt>. # # \Method \FileUtils.remove_entry_secure removes securely # by applying a special pre-process: # # - If the target path points to a directory, this method uses methods # {File#chown}[rdoc-ref:File#chown] # and {File#chmod}[rdoc-ref:File#chmod] # in removing directories. # - The owner of the target directory should be either the current process # or 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 is set. # # For details of this security vulnerability, see Perl cases: # # - {CVE-2005-0448}[https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0448]. # - {CVE-2004-0452}[https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452]. # module FileUtils VERSION = "1.7.2" def self.private_module_function(name) #:nodoc: module_function name private_class_method name end # # Returns a string containing the path to the current directory: # # FileUtils.pwd # => "/rdoc/fileutils" # # Related: FileUtils.cd. # def pwd Dir.pwd end module_function :pwd alias getwd pwd module_function :getwd # Changes the working directory to the given +dir+, which # should be {interpretable as a path}[rdoc-ref:FileUtils@Path+Arguments]: # # With no block given, # changes the current directory to the directory at +dir+; returns zero: # # FileUtils.pwd # => "/rdoc/fileutils" # FileUtils.cd('..') # FileUtils.pwd # => "/rdoc" # FileUtils.cd('fileutils') # # With a block given, changes the current directory to the directory # at +dir+, calls the block with argument +dir+, # and restores the original current directory; returns the block's value: # # FileUtils.pwd # => "/rdoc/fileutils" # FileUtils.cd('..') { |arg| [arg, FileUtils.pwd] } # => ["..", "/rdoc"] # FileUtils.pwd # => "/rdoc/fileutils" # # Keyword arguments: # # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.cd('..') # FileUtils.cd('fileutils') # # Output: # # cd .. # cd fileutils # # Related: FileUtils.pwd. # 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 the file at path +new+ # is newer than all the files at paths in array +old_list+; # +false+ otherwise. # # Argument +new+ and the elements of +old_list+ # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]: # # FileUtils.uptodate?('Rakefile', ['Gemfile', 'README.md']) # => true # FileUtils.uptodate?('Gemfile', ['Rakefile', 'README.md']) # => false # # A non-existent file is considered to be infinitely old. # # Related: FileUtils.touch. # 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 directories at the paths in the given +list+ # (a single path or an array of paths); # returns +list+ if it is an array, <tt>[list]</tt> otherwise. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # With no keyword arguments, creates a directory at each +path+ in +list+ # by calling: <tt>Dir.mkdir(path, mode)</tt>; # see {Dir.mkdir}[rdoc-ref:Dir.mkdir]: # # FileUtils.mkdir(%w[tmp0 tmp1]) # => ["tmp0", "tmp1"] # FileUtils.mkdir('tmp4') # => ["tmp4"] # # Keyword arguments: # # - <tt>mode: <i>mode</i></tt> - also calls <tt>File.chmod(mode, path)</tt>; # see {File.chmod}[rdoc-ref:File.chmod]. # - <tt>noop: true</tt> - does not create directories. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.mkdir(%w[tmp0 tmp1], verbose: true) # FileUtils.mkdir(%w[tmp2 tmp3], mode: 0700, verbose: true) # # Output: # # mkdir tmp0 tmp1 # mkdir -m 700 tmp2 tmp3 # # Raises an exception if any path points to an existing # file or directory, or if for any reason a directory cannot be created. # # Related: FileUtils.mkdir_p. # 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 directories at the paths in the given +list+ # (a single path or an array of paths), # also creating ancestor directories as needed; # returns +list+ if it is an array, <tt>[list]</tt> otherwise. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # With no keyword arguments, creates a directory at each +path+ in +list+, # along with any needed ancestor directories, # by calling: <tt>Dir.mkdir(path, mode)</tt>; # see {Dir.mkdir}[rdoc-ref:Dir.mkdir]: # # FileUtils.mkdir_p(%w[tmp0/tmp1 tmp2/tmp3]) # => ["tmp0/tmp1", "tmp2/tmp3"] # FileUtils.mkdir_p('tmp4/tmp5') # => ["tmp4/tmp5"] # # Keyword arguments: # # - <tt>mode: <i>mode</i></tt> - also calls <tt>File.chmod(mode, path)</tt>; # see {File.chmod}[rdoc-ref:File.chmod]. # - <tt>noop: true</tt> - does not create directories. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.mkdir_p(%w[tmp0 tmp1], verbose: true) # FileUtils.mkdir_p(%w[tmp2 tmp3], mode: 0700, verbose: true) # # Output: # # mkdir -p tmp0 tmp1 # mkdir -p -m 700 tmp2 tmp3 # # Raises an exception if for any reason a directory cannot be created. # # FileUtils.mkpath and FileUtils.makedirs are aliases for FileUtils.mkdir_p. # # Related: FileUtils.mkdir. # 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) stack = [] until File.directory?(path) || File.dirname(path) == path stack.push path path = File.dirname(path) end 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 directories at the paths in the given +list+ # (a single path or an array of paths); # returns +list+, if it is an array, <tt>[list]</tt> otherwise. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # With no keyword arguments, removes the directory at each +path+ in +list+, # by calling: <tt>Dir.rmdir(path)</tt>; # see {Dir.rmdir}[rdoc-ref:Dir.rmdir]: # # FileUtils.rmdir(%w[tmp0/tmp1 tmp2/tmp3]) # => ["tmp0/tmp1", "tmp2/tmp3"] # FileUtils.rmdir('tmp4/tmp5') # => ["tmp4/tmp5"] # # Keyword arguments: # # - <tt>parents: true</tt> - removes successive ancestor directories # if empty. # - <tt>noop: true</tt> - does not remove directories. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.rmdir(%w[tmp0/tmp1 tmp2/tmp3], parents: true, verbose: true) # FileUtils.rmdir('tmp4/tmp5', parents: true, verbose: true) # # Output: # # rmdir -p tmp0/tmp1 tmp2/tmp3 # rmdir -p tmp4/tmp5 # # Raises an exception if a directory does not exist # or if for any reason a directory cannot be removed. # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # 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 # Creates {hard links}[https://en.wikipedia.org/wiki/Hard_link]. # # Arguments +src+ (a single path or an array of paths) # and +dest+ (a single path) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # When +src+ is the path to an existing file # and +dest+ is the path to a non-existent file, # creates a hard link at +dest+ pointing to +src+; returns zero: # # Dir.children('tmp0/') # => ["t.txt"] # Dir.children('tmp1/') # => [] # FileUtils.ln('tmp0/t.txt', 'tmp1/t.lnk') # => 0 # Dir.children('tmp1/') # => ["t.lnk"] # # When +src+ is the path to an existing file # and +dest+ is the path to an existing directory, # creates a hard link at <tt>dest/src</tt> pointing to +src+; returns zero: # # Dir.children('tmp2') # => ["t.dat"] # Dir.children('tmp3') # => [] # FileUtils.ln('tmp2/t.dat', 'tmp3') # => 0 # Dir.children('tmp3') # => ["t.dat"] # # When +src+ is an array of paths to existing files # and +dest+ is the path to an existing directory, # then for each path +target+ in +src+, # creates a hard link at <tt>dest/target</tt> pointing to +target+; # returns +src+: # # Dir.children('tmp4/') # => [] # FileUtils.ln(['tmp0/t.txt', 'tmp2/t.dat'], 'tmp4/') # => ["tmp0/t.txt", "tmp2/t.dat"] # Dir.children('tmp4/') # => ["t.dat", "t.txt"] # # Keyword arguments: # # - <tt>force: true</tt> - overwrites +dest+ if it exists. # - <tt>noop: true</tt> - does not create links. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.ln('tmp0/t.txt', 'tmp1/t.lnk', verbose: true) # FileUtils.ln('tmp2/t.dat', 'tmp3', verbose: true) # FileUtils.ln(['tmp0/t.txt', 'tmp2/t.dat'], 'tmp4/', verbose: true) # # Output: # # ln tmp0/t.txt tmp1/t.lnk # ln tmp2/t.dat tmp3 # ln tmp0/t.txt tmp2/t.dat tmp4/ # # Raises an exception if +dest+ is the path to an existing file # and keyword argument +force+ is not +true+. # # Related: FileUtils.link_entry (has different options). # 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 # Creates {hard links}[https://en.wikipedia.org/wiki/Hard_link]. # # Arguments +src+ (a single path or an array of paths) # and +dest+ (a single path) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # If +src+ is the path to a directory and +dest+ does not exist, # creates links +dest+ and descendents pointing to +src+ and its descendents: # # tree('src0') # # => src0 # # |-- sub0 # # | |-- src0.txt # # | `-- src1.txt # # `-- sub1 # # |-- src2.txt # # `-- src3.txt # File.exist?('dest0') # => false # FileUtils.cp_lr('src0', 'dest0') # tree('dest0') # # => dest0 # # |-- sub0 # # | |-- src0.txt # # | `-- src1.txt # # `-- sub1 # # |-- src2.txt # # `-- src3.txt # # If +src+ and +dest+ are both paths to directories, # creates links <tt>dest/src</tt> and descendents # pointing to +src+ and its descendents: # # tree('src1') # # => src1 # # |-- sub0 # # | |-- src0.txt # # | `-- src1.txt # # `-- sub1 # # |-- src2.txt # # `-- src3.txt # FileUtils.mkdir('dest1') # FileUtils.cp_lr('src1', 'dest1') # tree('dest1') # # => dest1 # # `-- src1 # # |-- sub0 # # | |-- src0.txt # # | `-- src1.txt # # `-- sub1 # # |-- src2.txt # # `-- src3.txt # # If +src+ is an array of paths to entries and +dest+ is the path to a directory, # for each path +filepath+ in +src+, creates a link at <tt>dest/filepath</tt> # pointing to that path: # # tree('src2') # # => src2 # # |-- sub0 # # | |-- src0.txt # # | `-- src1.txt # # `-- sub1 # # |-- src2.txt # # `-- src3.txt # FileUtils.mkdir('dest2') # FileUtils.cp_lr(['src2/sub0', 'src2/sub1'], 'dest2') # tree('dest2') # # => dest2 # # |-- sub0 # # | |-- src0.txt # # | `-- src1.txt # # `-- sub1 # # |-- src2.txt # # `-- src3.txt # # Keyword arguments: # # - <tt>dereference_root: false</tt> - if +src+ is a symbolic link, # does not dereference it. # - <tt>noop: true</tt> - does not create links. # - <tt>remove_destination: true</tt> - removes +dest+ before creating links. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.cp_lr('src0', 'dest0', noop: true, verbose: true) # FileUtils.cp_lr('src1', 'dest1', noop: true, verbose: true) # FileUtils.cp_lr(['src2/sub0', 'src2/sub1'], 'dest2', noop: true, verbose: true) # # Output: # # cp -lr src0 dest0 # cp -lr src1 dest1 # cp -lr src2/sub0 src2/sub1 dest2 # # Raises an exception if +dest+ is the path to an existing file or directory # and keyword argument <tt>remove_destination: true</tt> is not given. # # Related: {methods for copying}[rdoc-ref:FileUtils@Copying]. # 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 # Creates {symbolic links}[https://en.wikipedia.org/wiki/Symbolic_link]. # # Arguments +src+ (a single path or an array of paths) # and +dest+ (a single path) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # If +src+ is the path to an existing file: # # - When +dest+ is the path to a non-existent file, # creates a symbolic link at +dest+ pointing to +src+: # # FileUtils.touch('src0.txt') # File.exist?('dest0.txt') # => false # FileUtils.ln_s('src0.txt', 'dest0.txt') # File.symlink?('dest0.txt') # => true # # - When +dest+ is the path to an existing file, # creates a symbolic link at +dest+ pointing to +src+ # if and only if keyword argument <tt>force: true</tt> is given # (raises an exception otherwise): # # FileUtils.touch('src1.txt') # FileUtils.touch('dest1.txt') # FileUtils.ln_s('src1.txt', 'dest1.txt', force: true) # FileTest.symlink?('dest1.txt') # => true # # FileUtils.ln_s('src1.txt', 'dest1.txt') # Raises Errno::EEXIST. # # If +dest+ is the path to a directory, # creates a symbolic link at <tt>dest/src</tt> pointing to +src+: # # FileUtils.touch('src2.txt') # FileUtils.mkdir('destdir2') # FileUtils.ln_s('src2.txt', 'destdir2') # File.symlink?('destdir2/src2.txt') # => true # # If +src+ is an array of paths to existing files and +dest+ is a directory, # for each child +child+ in +src+ creates a symbolic link <tt>dest/child</tt> # pointing to +child+: # # FileUtils.mkdir('srcdir3') # FileUtils.touch('srcdir3/src0.txt') # FileUtils.touch('srcdir3/src1.txt') # FileUtils.mkdir('destdir3') # FileUtils.ln_s(['srcdir3/src0.txt', 'srcdir3/src1.txt'], 'destdir3') # File.symlink?('destdir3/src0.txt') # => true # File.symlink?('destdir3/src1.txt') # => true # # Keyword arguments: # # - <tt>force: true</tt> - overwrites +dest+ if it exists. # - <tt>relative: false</tt> - create links relative to +dest+. # - <tt>noop: true</tt> - does not create links. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.ln_s('src0.txt', 'dest0.txt', noop: true, verbose: true) # FileUtils.ln_s('src1.txt', 'destdir1', noop: true, verbose: true) # FileUtils.ln_s('src2.txt', 'dest2.txt', force: true, noop: true, verbose: true) # FileUtils.ln_s(['srcdir3/src0.txt', 'srcdir3/src1.txt'], 'destdir3', noop: true, verbose: true) # # Output: # # ln -s src0.txt dest0.txt # ln -s src1.txt destdir1 # ln -sf src2.txt dest2.txt # ln -s srcdir3/src0.txt srcdir3/src1.txt destdir3 # # Related: FileUtils.ln_sf. # def ln_s(src, dest, force: nil, relative: false, target_directory: true, noop: nil, verbose: nil) if relative return ln_sr(src, dest, force: force, noop: noop, verbose: verbose) end 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 # Like FileUtils.ln_s, but always with keyword argument <tt>force: true</tt> given. # def ln_sf(src, dest, noop: nil, verbose: nil) ln_s src, dest, force: true, noop: noop, verbose: verbose end module_function :ln_sf # Like FileUtils.ln_s, but create links relative to +dest+. # def ln_sr(src, dest, target_directory: true, force: nil, noop: nil, verbose: nil) options = "#{force ? 'f' : ''}#{target_directory ? '' : 'T'}" dest = File.path(dest) srcs = Array(src) link = proc do |s, target_dir_p = true| s = File.path(s) if target_dir_p d = File.join(destdirs = dest, File.basename(s)) else destdirs = File.dirname(d = dest) end destdirs = fu_split_path(File.realpath(destdirs)) if fu_starting_path?(s) srcdirs = fu_split_path((File.realdirpath(s) rescue File.expand_path(s))) base = fu_relative_components_from(srcdirs, destdirs) s = File.join(*base) else srcdirs = fu_clean_components(*fu_split_path(s)) base = fu_relative_components_from(fu_split_path(Dir.pwd), destdirs) while srcdirs.first&. == ".." and base.last&.!=("..") and !fu_starting_path?(base.last) srcdirs.shift base.pop end s = File.join(*base, *srcdirs) end fu_output_message "ln -s#{options} #{s} #{d}" if verbose next if noop remove_file d, true if force File.symlink s, d end case srcs.size when 0 when 1 link[srcs[0], target_directory && File.directory?(dest)] else srcs.each(&link) end end module_function :ln_sr # Creates {hard links}[https://en.wikipedia.org/wiki/Hard_link]; returns +nil+. # # Arguments +src+ and +dest+ # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # If +src+ is the path to a file and +dest+ does not exist, # creates a hard link at +dest+ pointing to +src+: # # FileUtils.touch('src0.txt') # File.exist?('dest0.txt') # => false # FileUtils.link_entry('src0.txt', 'dest0.txt') # File.file?('dest0.txt') # => true # # If +src+ is the path to a directory and +dest+ does not exist, # recursively creates hard links at +dest+ pointing to paths in +src+: # # FileUtils.mkdir_p(['src1/dir0', 'src1/dir1']) # src_file_paths = [ # 'src1/dir0/t0.txt', # 'src1/dir0/t1.txt', # 'src1/dir1/t2.txt', # 'src1/dir1/t3.txt', # ] # FileUtils.touch(src_file_paths) # File.directory?('dest1') # => true # FileUtils.link_entry('src1', 'dest1') # File.file?('dest1/dir0/t0.txt') # => true # File.file?('dest1/dir0/t1.txt') # => true # File.file?('dest1/dir1/t2.txt') # => true # File.file?('dest1/dir1/t3.txt') # => true # # Keyword arguments: # # - <tt>dereference_root: true</tt> - dereferences +src+ if it is a symbolic link. # - <tt>remove_destination: true</tt> - removes +dest+ before creating links. # # Raises an exception if +dest+ is the path to an existing file or directory # and keyword argument <tt>remove_destination: true</tt> is not given. # # Related: FileUtils.ln (has different options). # 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 files. # # Arguments +src+ (a single path or an array of paths) # and +dest+ (a single path) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # If +src+ is the path to a file and +dest+ is not the path to a directory, # copies +src+ to +dest+: # # FileUtils.touch('src0.txt') # File.exist?('dest0.txt') # => false # FileUtils.cp('src0.txt', 'dest0.txt') # File.file?('dest0.txt') # => true # # If +src+ is the path to a file and +dest+ is the path to a directory, # copies +src+ to <tt>dest/src</tt>: # # FileUtils.touch('src1.txt') # FileUtils.mkdir('dest1') # FileUtils.cp('src1.txt', 'dest1') # File.file?('dest1/src1.txt') # => true # # If +src+ is an array of paths to files and +dest+ is the path to a directory, # copies from each +src+ to +dest+: # # src_file_paths = ['src2.txt', 'src2.dat'] # FileUtils.touch(src_file_paths) # FileUtils.mkdir('dest2') # FileUtils.cp(src_file_paths, 'dest2') # File.file?('dest2/src2.txt') # => true # File.file?('dest2/src2.dat') # => true # # Keyword arguments: # # - <tt>preserve: true</tt> - preserves file times. # - <tt>noop: true</tt> - does not copy files. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.cp('src0.txt', 'dest0.txt', noop: true, verbose: true) # FileUtils.cp('src1.txt', 'dest1', noop: true, verbose: true) # FileUtils.cp(src_file_paths, 'dest2', noop: true, verbose: true) # # Output: # # cp src0.txt dest0.txt # cp src1.txt dest1 # cp src2.txt src2.dat dest2 # # Raises an exception if +src+ is a directory. # # Related: {methods for copying}[rdoc-ref:FileUtils@Copying]. # 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 # Recursively copies files. # # Arguments +src+ (a single path or an array of paths) # and +dest+ (a single path) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # The mode, owner, and group are retained in the copy; # to change those, use FileUtils.install instead. # # If +src+ is the path to a file and +dest+ is not the path to a directory, # copies +src+ to +dest+: # # FileUtils.touch('src0.txt') # File.exist?('dest0.txt') # => false # FileUtils.cp_r('src0.txt', 'dest0.txt') # File.file?('dest0.txt') # => true # # If +src+ is the path to a file and +dest+ is the path to a directory, # copies +src+ to <tt>dest/src</tt>: # # FileUtils.touch('src1.txt') # FileUtils.mkdir('dest1') # FileUtils.cp_r('src1.txt', 'dest1') # File.file?('dest1/src1.txt') # => true # # If +src+ is the path to a directory and +dest+ does not exist, # recursively copies +src+ to +dest+: # # tree('src2') # # => src2 # # |-- dir0 # # | |-- src0.txt # # | `-- src1.txt # # `-- dir1 # # |-- src2.txt # # `-- src3.txt # FileUtils.exist?('dest2') # => false # FileUtils.cp_r('src2', 'dest2') # tree('dest2') # # => dest2 # # |-- dir0 # # | |-- src0.txt # # | `-- src1.txt # # `-- dir1 # # |-- src2.txt # # `-- src3.txt # # If +src+ and +dest+ are paths to directories, # recursively copies +src+ to <tt>dest/src</tt>: # # tree('src3') # # => src3 # # |-- dir0 # # | |-- src0.txt # # | `-- src1.txt # # `-- dir1 # # |-- src2.txt # # `-- src3.txt # FileUtils.mkdir('dest3') # FileUtils.cp_r('src3', 'dest3') # tree('dest3') # # => dest3 # # `-- src3 # # |-- dir0 # # | |-- src0.txt # # | `-- src1.txt # # `-- dir1 # # |-- src2.txt # # `-- src3.txt # # If +src+ is an array of paths and +dest+ is a directory, # recursively copies from each path in +src+ to +dest+; # the paths in +src+ may point to files and/or directories. # # Keyword arguments: # # - <tt>dereference_root: false</tt> - if +src+ is a symbolic link, # does not dereference it. # - <tt>noop: true</tt> - does not copy files. # - <tt>preserve: true</tt> - preserves file times. # - <tt>remove_destination: true</tt> - removes +dest+ before copying files. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.cp_r('src0.txt', 'dest0.txt', noop: true, verbose: true) # FileUtils.cp_r('src1.txt', 'dest1', noop: true, verbose: true) # FileUtils.cp_r('src2', 'dest2', noop: true, verbose: true) # FileUtils.cp_r('src3', 'dest3', noop: true, verbose: true) # # Output: # # cp -r src0.txt dest0.txt # cp -r src1.txt dest1 # cp -r src2 dest2 # cp -r src3 dest3 # # Raises an exception of +src+ is the path to a directory # and +dest+ is the path to a file. # # Related: {methods for copying}[rdoc-ref:FileUtils@Copying]. # 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 # Recursively copies files from +src+ to +dest+. # # Arguments +src+ and +dest+ # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # If +src+ is the path to a file, copies +src+ to +dest+: # # FileUtils.touch('src0.txt') # File.exist?('dest0.txt') # => false # FileUtils.copy_entry('src0.txt', 'dest0.txt') # File.file?('dest0.txt') # => true # # If +src+ is a directory, recursively copies +src+ to +dest+: # # tree('src1') # # => src1 # # |-- dir0 # # | |-- src0.txt # # | `-- src1.txt # # `-- dir1 # # |-- src2.txt # # `-- src3.txt # FileUtils.copy_entry('src1', 'dest1') # tree('dest1') # # => dest1 # # |-- dir0 # # | |-- src0.txt # # | `-- src1.txt # # `-- dir1 # # |-- src2.txt # # `-- src3.txt # # The recursive copying preserves file types for regular files, # directories, and symbolic links; # other file types (FIFO streams, device files, etc.) are not supported. # # Keyword arguments: # # - <tt>dereference_root: true</tt> - if +src+ is a symbolic link, # follows the link. # - <tt>preserve: true</tt> - preserves file times. # - <tt>remove_destination: true</tt> - removes +dest+ before copying files. # # Related: {methods for copying}[rdoc-ref:FileUtils@Copying]. # 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 from +src+ to +dest+, which should not be directories. # # Arguments +src+ and +dest+ # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # Examples: # # FileUtils.touch('src0.txt') # FileUtils.copy_file('src0.txt', 'dest0.txt') # File.file?('dest0.txt') # => true # # Keyword arguments: # # - <tt>dereference: false</tt> - if +src+ is a symbolic link, # does not follow the link. # - <tt>preserve: true</tt> - preserves file times. # - <tt>remove_destination: true</tt> - removes +dest+ before copying files. # # Related: {methods for copying}[rdoc-ref:FileUtils@Copying]. # 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 \IO stream +src+ to \IO stream +dest+ via # {IO.copy_stream}[rdoc-ref:IO.copy_stream]. # # Related: {methods for copying}[rdoc-ref:FileUtils@Copying]. # def copy_stream(src, dest) IO.copy_stream(src, dest) end module_function :copy_stream # Moves entries. # # Arguments +src+ (a single path or an array of paths) # and +dest+ (a single path) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # If +src+ and +dest+ are on different file systems, # first copies, then removes +src+. # # May cause a local vulnerability if not called with keyword argument # <tt>secure: true</tt>; # see {Avoiding the TOCTTOU Vulnerability}[rdoc-ref:FileUtils@Avoiding+the+TOCTTOU+Vulnerability]. # # If +src+ is the path to a single file or directory and +dest+ does not exist, # moves +src+ to +dest+: # # tree('src0') # # => src0 # # |-- src0.txt # # `-- src1.txt # File.exist?('dest0') # => false # FileUtils.mv('src0', 'dest0') # File.exist?('src0') # => false # tree('dest0') # # => dest0 # # |-- src0.txt # # `-- src1.txt # # If +src+ is an array of paths to files and directories # and +dest+ is the path to a directory, # copies from each path in the array to +dest+: # # File.file?('src1.txt') # => true # tree('src1') # # => src1 # # |-- src.dat # # `-- src.txt # Dir.empty?('dest1') # => true # FileUtils.mv(['src1.txt', 'src1'], 'dest1') # tree('dest1') # # => dest1 # # |-- src1 # # | |-- src.dat # # | `-- src.txt # # `-- src1.txt # # Keyword arguments: # # - <tt>force: true</tt> - if the move includes removing +src+ # (that is, if +src+ and +dest+ are on different file systems), # ignores raised exceptions of StandardError and its descendants. # - <tt>noop: true</tt> - does not move files. # - <tt>secure: true</tt> - removes +src+ securely; # see details at FileUtils.remove_entry_secure. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.mv('src0', 'dest0', noop: true, verbose: true) # FileUtils.mv(['src1.txt', 'src1'], 'dest1', noop: true, verbose: true) # # Output: # # mv src0 dest0 # mv src1.txt src1 dest1 # 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 # Removes entries at the paths in the given +list+ # (a single path or an array of paths) # returns +list+, if it is an array, <tt>[list]</tt> otherwise. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # With no keyword arguments, removes files at the paths given in +list+: # # FileUtils.touch(['src0.txt', 'src0.dat']) # FileUtils.rm(['src0.dat', 'src0.txt']) # => ["src0.dat", "src0.txt"] # # Keyword arguments: # # - <tt>force: true</tt> - ignores raised exceptions of StandardError # and its descendants. # - <tt>noop: true</tt> - does not remove files; returns +nil+. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.rm(['src0.dat', 'src0.txt'], noop: true, verbose: true) # # Output: # # rm src0.dat src0.txt # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # 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, **kwargs) # # Argument +list+ (a single path or an array of paths) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # See FileUtils.rm for keyword arguments. # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # 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 # Removes entries at the paths in the given +list+ # (a single path or an array of paths); # returns +list+, if it is an array, <tt>[list]</tt> otherwise. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # May cause a local vulnerability if not called with keyword argument # <tt>secure: true</tt>; # see {Avoiding the TOCTTOU Vulnerability}[rdoc-ref:FileUtils@Avoiding+the+TOCTTOU+Vulnerability]. # # For each file path, removes the file at that path: # # FileUtils.touch(['src0.txt', 'src0.dat']) # FileUtils.rm_r(['src0.dat', 'src0.txt']) # File.exist?('src0.txt') # => false # File.exist?('src0.dat') # => false # # For each directory path, recursively removes files and directories: # # tree('src1') # # => src1 # # |-- dir0 # # | |-- src0.txt # # | `-- src1.txt # # `-- dir1 # # |-- src2.txt # # `-- src3.txt # FileUtils.rm_r('src1') # File.exist?('src1') # => false # # Keyword arguments: # # - <tt>force: true</tt> - ignores raised exceptions of StandardError # and its descendants. # - <tt>noop: true</tt> - does not remove entries; returns +nil+. # - <tt>secure: true</tt> - removes +src+ securely; # see details at FileUtils.remove_entry_secure. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.rm_r(['src0.dat', 'src0.txt'], noop: true, verbose: true) # FileUtils.rm_r('src1', noop: true, verbose: true) # # Output: # # rm -r src0.dat src0.txt # rm -r src1 # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # 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, **kwargs) # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # May cause a local vulnerability if not called with keyword argument # <tt>secure: true</tt>; # see {Avoiding the TOCTTOU Vulnerability}[rdoc-ref:FileUtils@Avoiding+the+TOCTTOU+Vulnerability]. # # See FileUtils.rm_r for keyword arguments. # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # 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 # Securely removes the entry given by +path+, # which should be the entry for a regular file, a symbolic link, # or a directory. # # Argument +path+ # should be {interpretable as a path}[rdoc-ref:FileUtils@Path+Arguments]. # # Avoids a local vulnerability that can exist in certain circumstances; # see {Avoiding the TOCTTOU Vulnerability}[rdoc-ref:FileUtils@Avoiding+the+TOCTTOU+Vulnerability]. # # Optional argument +force+ specifies whether to ignore # raised exceptions of StandardError and its descendants. # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # 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? # Removes the entry given by +path+, # which should be the entry for a regular file, a symbolic link, # or a directory. # # Argument +path+ # should be {interpretable as a path}[rdoc-ref:FileUtils@Path+Arguments]. # # Optional argument +force+ specifies whether to ignore # raised exceptions of StandardError and its descendants. # # Related: FileUtils.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 the file entry given by +path+, # which should be the entry for a regular file or a symbolic link. # # Argument +path+ # should be {interpretable as a path}[rdoc-ref:FileUtils@Path+Arguments]. # # Optional argument +force+ specifies whether to ignore # raised exceptions of StandardError and its descendants. # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # def remove_file(path, force = false) Entry_.new(path).remove_file rescue raise unless force end module_function :remove_file # Recursively removes the directory entry given by +path+, # which should be the entry for a regular file, a symbolic link, # or a directory. # # Argument +path+ # should be {interpretable as a path}[rdoc-ref:FileUtils@Path+Arguments]. # # Optional argument +force+ specifies whether to ignore # raised exceptions of StandardError and its descendants. # # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting]. # 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 files +a+ and +b+ are identical, # +false+ otherwise. # # Arguments +a+ and +b+ # should be {interpretable as a path}[rdoc-ref:FileUtils@Path+Arguments]. # # FileUtils.identical? and FileUtils.cmp are aliases for FileUtils.compare_file. # # Related: FileUtils.compare_stream. # 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 streams +a+ and +b+ are identical, # +false+ otherwise. # # Arguments +a+ and +b+ # should be {interpretable as a path}[rdoc-ref:FileUtils@Path+Arguments]. # # Related: FileUtils.compare_file. # def compare_stream(a, b) bsize = fu_stream_blksize(a, b) sa = String.new(capacity: bsize) sb = String.new(capacity: bsize) 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 # Copies a file entry. # See {install(1)}[https://man7.org/linux/man-pages/man1/install.1.html]. # # Arguments +src+ (a single path or an array of paths) # and +dest+ (a single path) # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]; # # If the entry at +dest+ does not exist, copies from +src+ to +dest+: # # File.read('src0.txt') # => "aaa\n" # File.exist?('dest0.txt') # => false # FileUtils.install('src0.txt', 'dest0.txt') # File.read('dest0.txt') # => "aaa\n" # # If +dest+ is a file entry, copies from +src+ to +dest+, overwriting: # # File.read('src1.txt') # => "aaa\n" # File.read('dest1.txt') # => "bbb\n" # FileUtils.install('src1.txt', 'dest1.txt') # File.read('dest1.txt') # => "aaa\n" # # If +dest+ is a directory entry, copies from +src+ to <tt>dest/src</tt>, # overwriting if necessary: # # File.read('src2.txt') # => "aaa\n" # File.read('dest2/src2.txt') # => "bbb\n" # FileUtils.install('src2.txt', 'dest2') # File.read('dest2/src2.txt') # => "aaa\n" # # If +src+ is an array of paths and +dest+ points to a directory, # copies each path +path+ in +src+ to <tt>dest/path</tt>: # # File.file?('src3.txt') # => true # File.file?('src3.dat') # => true # FileUtils.mkdir('dest3') # FileUtils.install(['src3.txt', 'src3.dat'], 'dest3') # File.file?('dest3/src3.txt') # => true # File.file?('dest3/src3.dat') # => true # # Keyword arguments: # # - <tt>group: <i>group</i></tt> - changes the group if not +nil+, # using {File.chown}[rdoc-ref:File.chown]. # - <tt>mode: <i>permissions</i></tt> - changes the permissions. # using {File.chmod}[rdoc-ref:File.chmod]. # - <tt>noop: true</tt> - does not copy entries; returns +nil+. # - <tt>owner: <i>owner</i></tt> - changes the owner if not +nil+, # using {File.chown}[rdoc-ref:File.chown]. # - <tt>preserve: true</tt> - preserve timestamps # using {File.utime}[rdoc-ref:File.utime]. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.install('src0.txt', 'dest0.txt', noop: true, verbose: true) # FileUtils.install('src1.txt', 'dest1.txt', noop: true, verbose: true) # FileUtils.install('src2.txt', 'dest2', noop: true, verbose: true) # # Output: # # install -c src0.txt dest0.txt # install -c src1.txt dest1.txt # install -c src2.txt dest2 # # Related: {methods for copying}[rdoc-ref:FileUtils@Copying]. # 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 if d.end_with?('/') mkdir_p d copy_file s, d + File.basename(s) else mkdir_p File.expand_path('..', d) copy_file s, d end 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 permissions on the entries at the paths given in +list+ # (a single path or an array of paths) # to the permissions given by +mode+; # returns +list+ if it is an array, <tt>[list]</tt> otherwise: # # - Modifies each entry that is a regular file using # {File.chmod}[rdoc-ref:File.chmod]. # - Modifies each entry that is a symbolic link using # {File.lchmod}[rdoc-ref:File.lchmod]. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # Argument +mode+ may be either an integer or a string: # # - \Integer +mode+: represents the permission bits to be set: # # FileUtils.chmod(0755, 'src0.txt') # FileUtils.chmod(0644, ['src0.txt', 'src0.dat']) # # - \String +mode+: represents the permissions to be set: # # The string is of the form <tt>[targets][[operator][perms[,perms]]</tt>, where: # # - +targets+ may be any combination of these letters: # # - <tt>'u'</tt>: permissions apply to the file's owner. # - <tt>'g'</tt>: permissions apply to users in the file's group. # - <tt>'o'</tt>: permissions apply to other users not in the file's group. # - <tt>'a'</tt> (the default): permissions apply to all users. # # - +operator+ may be one of these letters: # # - <tt>'+'</tt>: adds permissions. # - <tt>'-'</tt>: removes permissions. # - <tt>'='</tt>: sets (replaces) permissions. # # - +perms+ (may be repeated, with separating commas) # may be any combination of these letters: # # - <tt>'r'</tt>: Read. # - <tt>'w'</tt>: Write. # - <tt>'x'</tt>: Execute (search, for a directory). # - <tt>'X'</tt>: Search (for a directories only; # must be used with <tt>'+'</tt>) # - <tt>'s'</tt>: Uid or gid. # - <tt>'t'</tt>: Sticky bit. # # Examples: # # FileUtils.chmod('u=wrx,go=rx', 'src1.txt') # FileUtils.chmod('u=wrx,go=rx', '/usr/bin/ruby') # # Keyword arguments: # # - <tt>noop: true</tt> - does not change permissions; returns +nil+. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.chmod(0755, 'src0.txt', noop: true, verbose: true) # FileUtils.chmod(0644, ['src0.txt', 'src0.dat'], noop: true, verbose: true) # FileUtils.chmod('u=wrx,go=rx', 'src1.txt', noop: true, verbose: true) # FileUtils.chmod('u=wrx,go=rx', '/usr/bin/ruby', noop: true, verbose: true) # # Output: # # chmod 755 src0.txt # chmod 644 src0.txt src0.dat # chmod u=wrx,go=rx src1.txt # chmod u=wrx,go=rx /usr/bin/ruby # # Related: FileUtils.chmod_R. # 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 # Like FileUtils.chmod, but changes permissions recursively. # 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 the owner and group on the entries at the paths given in +list+ # (a single path or an array of paths) # to the given +user+ and +group+; # returns +list+ if it is an array, <tt>[list]</tt> otherwise: # # - Modifies each entry that is a regular file using # {File.chown}[rdoc-ref:File.chown]. # - Modifies each entry that is a symbolic link using # {File.lchown}[rdoc-ref:File.lchown]. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # User and group: # # - Argument +user+ may be a user name or a user id; # if +nil+ or +-1+, the user is not changed. # - Argument +group+ may be a group name or a group id; # if +nil+ or +-1+, the group is not changed. # - The user must be a member of the group. # # Examples: # # # One path. # # User and group as string names. # File.stat('src0.txt').uid # => 1004 # File.stat('src0.txt').gid # => 1004 # FileUtils.chown('user2', 'group1', 'src0.txt') # File.stat('src0.txt').uid # => 1006 # File.stat('src0.txt').gid # => 1005 # # # User and group as uid and gid. # FileUtils.chown(1004, 1004, 'src0.txt') # File.stat('src0.txt').uid # => 1004 # File.stat('src0.txt').gid # => 1004 # # # Array of paths. # FileUtils.chown(1006, 1005, ['src0.txt', 'src0.dat']) # # # Directory (not recursive). # FileUtils.chown('user2', 'group1', '.') # # Keyword arguments: # # - <tt>noop: true</tt> - does not change permissions; returns +nil+. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.chown('user2', 'group1', 'src0.txt', noop: true, verbose: true) # FileUtils.chown(1004, 1004, 'src0.txt', noop: true, verbose: true) # FileUtils.chown(1006, 1005, ['src0.txt', 'src0.dat'], noop: true, verbose: true) # FileUtils.chown('user2', 'group1', path, noop: true, verbose: true) # FileUtils.chown('user2', 'group1', '.', noop: true, verbose: true) # # Output: # # chown user2:group1 src0.txt # chown 1004:1004 src0.txt # chown 1006:1005 src0.txt src0.dat # chown user2:group1 src0.txt # chown user2:group1 . # # Related: FileUtils.chown_R. # 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 # Like FileUtils.chown, but changes owner and group recursively. # 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 times (mtime) and access times (atime) # of the entries given by the paths in +list+ # (a single path or an array of paths); # returns +list+ if it is an array, <tt>[list]</tt> otherwise. # # By default, creates an empty file for any path to a non-existent entry; # use keyword argument +nocreate+ to raise an exception instead. # # Argument +list+ or its elements # should be {interpretable as paths}[rdoc-ref:FileUtils@Path+Arguments]. # # Examples: # # # Single path. # f = File.new('src0.txt') # Existing file. # f.atime # => 2022-06-10 11:11:21.200277 -0700 # f.mtime # => 2022-06-10 11:11:21.200277 -0700 # FileUtils.touch('src0.txt') # f = File.new('src0.txt') # f.atime # => 2022-06-11 08:28:09.8185343 -0700 # f.mtime # => 2022-06-11 08:28:09.8185343 -0700 # # # Array of paths. # FileUtils.touch(['src0.txt', 'src0.dat']) # # Keyword arguments: # # - <tt>mtime: <i>time</i></tt> - sets the entry's mtime to the given time, # instead of the current time. # - <tt>nocreate: true</tt> - raises an exception if the entry does not exist. # - <tt>noop: true</tt> - does not touch entries; returns +nil+. # - <tt>verbose: true</tt> - prints an equivalent command: # # FileUtils.touch('src0.txt', noop: true, verbose: true) # FileUtils.touch(['src0.txt', 'src0.dat'], noop: true, verbose: true) # FileUtils.touch(path, noop: true, verbose: true) # # Output: # # touch src0.txt # touch src0.txt src0.dat # touch src0.txt # # Related: FileUtils.uptodate?. # 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 = Dir.children(path, **opts) 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? begin children = entries() rescue Errno::EACCES # Failed to get the list of children. # Assuming there is no children, try to process the parent directory. yield self return end children.each do |ent| ent.postorder_traverse do |e| yield e end end end 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, target_directory = true) #:nodoc: if tmp = Array.try_convert(src) tmp.each do |s| s = File.path(s) yield s, (target_directory ? File.join(dest, File.basename(s)) : dest) end else src = File.path(src) if target_directory and 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 def fu_split_path(path) path = File.path(path) list = [] until (parent, base = File.split(path); parent == path or parent == ".") list << base path = parent end list << path list.reverse! end private_module_function :fu_split_path def fu_relative_components_from(target, base) #:nodoc: i = 0 while target[i]&.== base[i] i += 1 end Array.new(base.size-i, '..').concat(target[i..-1]) end private_module_function :fu_relative_components_from def fu_clean_components(*comp) comp.shift while comp.first == "." return comp if comp.empty? clean = [comp.shift] path = File.join(*clean, "") # ending with File::SEPARATOR while c = comp.shift if c == ".." and clean.last != ".." and !(fu_have_symlink? && File.symlink?(path)) clean.pop path.chomp!(%r((?<=\A|/)[^/]+/\z), "") else clean << c path << c << "/" end end clean end private_module_function :fu_clean_components if fu_windows? def fu_starting_path?(path) path&.start_with?(%r(\w:|/)) end else def fu_starting_path?(path) path&.start_with?("/") end end private_module_function :fu_starting_path? # 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 the string names of \FileUtils methods # that accept one or more keyword arguments: # # FileUtils.commands.sort.take(3) # => ["cd", "chdir", "chmod"] # def self.commands OPT_TABLE.keys end # Returns an array of the string keyword names: # # FileUtils.options.take(3) # => ["noop", "verbose", "force"] # def self.options OPT_TABLE.values.flatten.uniq.map {|sym| sym.to_s } end # Returns +true+ if method +mid+ accepts the given option +opt+, +false+ otherwise; # the arguments may be strings or symbols: # # FileUtils.have_option?(:chmod, :noop) # => true # FileUtils.have_option?('chmod', 'secure') # => 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 the string keyword name for method +mid+; # the argument may be a string or a symbol: # # FileUtils.options_of(:rm) # => ["force", "noop", "verbose"] # FileUtils.options_of('mv') # => ["force", "noop", "verbose", "secure"] # def self.options_of(mid) OPT_TABLE[mid.to_s].map {|sym| sym.to_s } end # Returns an array of the string method names of the methods # that accept the given keyword option +opt+; # the argument must be a symbol: # # FileUtils.collect_method(:preserve) # => ["cp", "copy", "cp_r", "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
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