Module: FileUtils

Extended by:
StreamUtils_
Includes:
StreamUtils_
Included in:
DryRun, NoWrite, Verbose
Defined in:
lib/fileutils.rb

Overview

fileutils.rb

Copyright © 2000-2007 Minero Aoki

This program is free software. You can distribute/modify this program under the same terms of ruby.

module FileUtils

Namespace for several file utility methods for copying, moving, removing, etc.

Module Functions

require 'fileutils'

FileUtils.cd(dir, **options)
FileUtils.cd(dir, **options) {|dir| block }
FileUtils.pwd()
FileUtils.mkdir(dir, **options)
FileUtils.mkdir(list, **options)
FileUtils.mkdir_p(dir, **options)
FileUtils.mkdir_p(list, **options)
FileUtils.rmdir(dir, **options)
FileUtils.rmdir(list, **options)
FileUtils.ln(target, link, **options)
FileUtils.ln(targets, dir, **options)
FileUtils.ln_s(target, link, **options)
FileUtils.ln_s(targets, dir, **options)
FileUtils.ln_sf(target, link, **options)
FileUtils.cp(src, dest, **options)
FileUtils.cp(list, dir, **options)
FileUtils.cp_r(src, dest, **options)
FileUtils.cp_r(list, dir, **options)
FileUtils.mv(src, dest, **options)
FileUtils.mv(list, dir, **options)
FileUtils.rm(list, **options)
FileUtils.rm_r(list, **options)
FileUtils.rm_rf(list, **options)
FileUtils.install(src, dest, **options)
FileUtils.chmod(mode, list, **options)
FileUtils.chmod_R(mode, list, **options)
FileUtils.chown(user, group, list, **options)
FileUtils.chown_R(user, group, list, **options)
FileUtils.touch(list, **options)

Possible options are:

:force

forced operation (rewrite files if exist, remove directories if not empty, etc.);

:verbose

print command to be run, in bash syntax, before performing it;

:preserve

preserve object’s group, user and modification time on copying;

:noop

no changes are made (usable in combination with :verbose which will print the command to run)

Each method documents the options that it honours. See also ::commands, ::options and ::options_of methods to introspect which command have which options.

All methods that have the concept of a “source” file or directory can take either one file or a list of files in that argument. See the method documentation for examples.

There are some ‘low level’ methods, which do not accept keyword arguments:

FileUtils.copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false)
FileUtils.copy_file(src, dest, preserve = false, dereference = true)
FileUtils.copy_stream(srcstream, deststream)
FileUtils.remove_entry(path, force = false)
FileUtils.remove_entry_secure(path, force = false)
FileUtils.remove_file(path, force = false)
FileUtils.compare_file(path_a, path_b)
FileUtils.compare_stream(stream_a, stream_b)
FileUtils.uptodate?(file, cmp_list)

module FileUtils::Verbose

This module has all methods of FileUtils module, but it outputs messages before acting. This equates to passing the :verbose 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 :noop 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 :noop and :verbose flags to methods in FileUtils.

Defined Under Namespace

Modules: DryRun, LowMethods, NoWrite, StreamUtils_, Verbose Classes: Entry_

Constant Summary collapse

VERSION = 
"1.4.1"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.cd(dir, verbose: nil, &block) ⇒ Object

Changes the current directory to the directory dir.

If this method is called with block, resumes to the previous working directory after the block execution has finished.

FileUtils.cd('/')  # change directory

FileUtils.cd('/', verbose: true)   # change directory and report it

FileUtils.cd('/') do  # change directory
  # ...               # do something
end                   # return to original directory



137
138
139
140
141
142
 
# File 'lib/fileutils.rb', line 137

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

.chdir ⇒ Object

Changes the current directory to the directory dir.

If this method is called with block, resumes to the previous working directory after the block execution has finished.

FileUtils.cd('/')  # change directory

FileUtils.cd('/', verbose: true)   # change directory and report it

FileUtils.cd('/') do  # change directory
  # ...               # do something
end                   # return to original directory



145
146
147
148
149
150
 
# File 'lib/fileutils.rb', line 145

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

.chmod(mode, list, noop: nil, verbose: nil) ⇒ Object

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.



1012
1013
1014
1015
1016
1017
1018
1019
 
# File 'lib/fileutils.rb', line 1012

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

.chmod_R(mode, list, noop: nil, verbose: nil, force: nil) ⇒ Object

Changes permission bits on the named files (in list) to the bit pattern represented by mode.

FileUtils.chmod_R 0700, "/tmp/app.#{$$}"
FileUtils.chmod_R "u=wrx", "/tmp/app.#{$$}"



1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
 
# File 'lib/fileutils.rb', line 1029

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

.chown(user, group, list, noop: nil, verbose: nil) ⇒ Object

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



1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
 
# File 'lib/fileutils.rb', line 1057

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

.chown_R(user, group, list, noop: nil, verbose: nil, force: nil) ⇒ Object

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



1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
 
# File 'lib/fileutils.rb', line 1081

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

.cmp ⇒ Object

Returns true if the contents of a file a and a file b are identical.

FileUtils.compare_file('somefile', 'somefile')       #=> true
FileUtils.compare_file('/dev/null', '/dev/urandom')  #=> false



827
828
829
830
831
832
833
834
 
# File 'lib/fileutils.rb', line 827

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

.collect_method(opt) ⇒ Object

Returns an Array of methods names which have the option opt.

p FileUtils.collect_method(:preserve) #=> ["cp", "cp_r", "copy", "install"]



1679
1680
1681
 
# File 'lib/fileutils.rb', line 1679

def self.collect_method(opt)
  OPT_TABLE.keys.select {|m| OPT_TABLE[m].include?(opt) }
end

.commands ⇒ Object

Returns an Array of names of high-level methods that accept any keyword arguments.

p FileUtils.commands  #=> ["chmod", "cp", "cp_r", "install", ...]



1640
1641
1642
 
# File 'lib/fileutils.rb', line 1640

def self.commands
  OPT_TABLE.keys
end

.compare_file(a, b) ⇒ Object

Returns true if the contents of a file a and a file b are identical.

FileUtils.compare_file('somefile', 'somefile')       #=> true
FileUtils.compare_file('/dev/null', '/dev/urandom')  #=> false



816
817
818
819
820
821
822
823
 
# File 'lib/fileutils.rb', line 816

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

.compare_stream(a, b) ⇒ Object

Returns true if the contents of a stream a and b are identical.



834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
 
# File 'lib/fileutils.rb', line 834

def compare_stream(a, b)
  bsize = fu_stream_blksize(a, b)

  if RUBY_VERSION > "2.4"
    sa = String.new(capacity: bsize)
    sb = String.new(capacity: bsize)
  else
    sa = String.new
    sb = String.new
  end

  begin
    a.read(bsize, sa)
    b.read(bsize, sb)
    return true if sa.empty? && sb.empty?
  end while sa == sb
  false
end

.copy ⇒ Object

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



435
436
437
438
439
440
441
 
# File 'lib/fileutils.rb', line 435

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

.copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false) ⇒ Object

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.



489
490
491
492
493
494
495
496
497
498
499
500
501
502
 
# File 'lib/fileutils.rb', line 489

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

.copy_file(src, dest, preserve = false, dereference = true) ⇒ Object

Copies file contents of src to dest. Both of src and dest must be a path name.



509
510
511
512
513
 
# File 'lib/fileutils.rb', line 509

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

.copy_stream(src, dest) ⇒ Object

Copies stream src to dest. src must respond to #read(n) and dest must respond to #write(str).



521
522
523
 
# File 'lib/fileutils.rb', line 521

def copy_stream(src, dest)
  IO.copy_stream(src, dest)
end

.cp(src, dest, preserve: nil, noop: nil, verbose: nil) ⇒ Object

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



426
427
428
429
430
431
432
 
# File 'lib/fileutils.rb', line 426

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

.cp_lr(src, dest, noop: nil, verbose: nil, dereference_root: true, remove_destination: false) ⇒ Object

Hard link src to dest. If src is a directory, this method links all its contents recursively. If dest is a directory, links src to dest/src.

src can be a list of files.

If dereference_root is true, this method dereference tree root.

If remove_destination is true, this method removes each destination file before copy.

FileUtils.rm_r site_ruby + '/mylib', force: true
FileUtils.cp_lr 'lib/', site_ruby + '/mylib'

# Examples of linking several files to target directory.
FileUtils.cp_lr %w(mail.rb field.rb debug/), site_ruby + '/tmail'
FileUtils.cp_lr Dir.glob('*.rb'), '/home/aamine/lib/ruby', noop: true, verbose: true

# If you want to link all contents of a directory instead of the
# directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# use the following code.
FileUtils.cp_lr 'src/.', 'dest'  # cp_lr('src', 'dest') makes dest/src, but this doesn't.



339
340
341
342
343
344
345
346
 
# File 'lib/fileutils.rb', line 339

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

.cp_r(src, dest, preserve: nil, noop: nil, verbose: nil, dereference_root: true, remove_destination: nil) ⇒ Object

Copies src to dest. If src is a directory, this method copies all its contents recursively. If dest is a directory, copies src to dest/src.

src can be a list of files.

If dereference_root is true, this method dereference tree root.

If remove_destination is true, this method removes each destination file before copy.

# Installing Ruby library "mylib" under the site_ruby
FileUtils.rm_r site_ruby + '/mylib', force: true
FileUtils.cp_r 'lib/', site_ruby + '/mylib'

# Examples of copying several files to target directory.
FileUtils.cp_r %w(mail.rb field.rb debug/), site_ruby + '/tmail'
FileUtils.cp_r Dir.glob('*.rb'), '/home/foo/lib/ruby', noop: true, verbose: true

# If you want to copy all contents of a directory instead of the
# directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# use following code.
FileUtils.cp_r 'src/.', 'dest'     # cp_r('src', 'dest') makes dest/src,
                                   # but this doesn't.



463
464
465
466
467
468
469
470
 
# File 'lib/fileutils.rb', line 463

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

.getwd ⇒ Object

Returns the name of the current directory.



120
121
122
 
# File 'lib/fileutils.rb', line 120

def pwd
  Dir.pwd
end

.have_option?(mid, opt) ⇒ Boolean

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

Returns:

  • (Boolean) 


1660
1661
1662
1663
 
# File 'lib/fileutils.rb', line 1660

def self.have_option?(mid, opt)
  li = OPT_TABLE[mid.to_s] or raise ArgumentError, "no such method: #{mid}"
  li.include?(opt)
end

.identical? ⇒ Object

Returns true if the contents of a file a and a file b are identical.

FileUtils.compare_file('somefile', 'somefile')       #=> true
FileUtils.compare_file('/dev/null', '/dev/urandom')  #=> false



826
827
828
829
830
831
832
833
 
# File 'lib/fileutils.rb', line 826

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

.install(src, dest, mode: nil, owner: nil, group: nil, preserve: nil, noop: nil, verbose: nil) ⇒ Object

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



862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
 
# File 'lib/fileutils.rb', line 862

def install(src, dest, mode: nil, owner: nil, group: nil, preserve: nil,
            noop: nil, verbose: nil)
  if verbose
    msg = +"install -c"
    msg << ' -p' if preserve
    msg << ' -m ' << mode_to_s(mode) if mode
    msg << " -o #{owner}" if owner
    msg << " -g #{group}" if group
    msg << ' ' << [src,dest].flatten.join(' ')
    fu_output_message msg
  end
  return if noop
  uid = fu_get_uid(owner)
  gid = fu_get_gid(group)
  fu_each_src_dest(src, dest) do |s, d|
    st = File.stat(s)
    unless File.exist?(d) and compare_file(s, d)
      remove_file d, true
      copy_file s, d
      File.utime st.atime, st.mtime, d if preserve
      File.chmod fu_mode(mode, st), d if mode
      File.chown uid, gid, d if uid or gid
    end
  end
end

.link ⇒ Object

:call-seq:

FileUtils.ln(target, link, force: nil, noop: nil, verbose: nil)
FileUtils.ln(target,  dir, force: nil, noop: nil, verbose: nil)
FileUtils.ln(targets, dir, force: nil, noop: nil, verbose: nil)

In the first form, creates a hard link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.

FileUtils.ln 'gcc', 'cc', verbose: true
FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs'

In the second form, creates a link dir/target pointing to target. In the third form, creates several hard links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.

FileUtils.cd '/sbin'
FileUtils.ln %w(cp mv mkdir), '/bin'   # Now /sbin/cp and /bin/cp are linked.



313
314
315
316
317
318
319
320
 
# File 'lib/fileutils.rb', line 313

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

.link_entry(src, dest, dereference_root = false, remove_destination = false) ⇒ Object

Hard links a file system entry src to dest. If src is a directory, this method links its contents recursively.

Both of src and dest must be a path name. src must exist, dest must not exist.

If dereference_root is true, this method dereferences the tree root.

If remove_destination is true, this method removes each destination file before copy.



406
407
408
409
410
411
412
 
# File 'lib/fileutils.rb', line 406

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

.ln(src, dest, force: nil, noop: nil, verbose: nil) ⇒ Object

:call-seq:

FileUtils.ln(target, link, force: nil, noop: nil, verbose: nil)
FileUtils.ln(target,  dir, force: nil, noop: nil, verbose: nil)
FileUtils.ln(targets, dir, force: nil, noop: nil, verbose: nil)

In the first form, creates a hard link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.

FileUtils.ln 'gcc', 'cc', verbose: true
FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs'

In the second form, creates a link dir/target pointing to target. In the third form, creates several hard links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.

FileUtils.cd '/sbin'
FileUtils.ln %w(cp mv mkdir), '/bin'   # Now /sbin/cp and /bin/cp are linked.



303
304
305
306
307
308
309
310
 
# File 'lib/fileutils.rb', line 303

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

.ln_s(src, dest, force: nil, noop: nil, verbose: nil) ⇒ Object

:call-seq:

FileUtils.ln_s(target, link, force: nil, noop: nil, verbose: nil)
FileUtils.ln_s(target,  dir, force: nil, noop: nil, verbose: nil)
FileUtils.ln_s(targets, dir, force: nil, noop: nil, verbose: nil)

In the first form, creates a symbolic link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.

FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby'
FileUtils.ln_s 'verylongsourcefilename.c', 'c', force: true

In the second form, creates a link dir/target pointing to target. In the third form, creates several symbolic links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.

FileUtils.ln_s Dir.glob('/bin/*.rb'), '/home/foo/bin'



369
370
371
372
373
374
375
376
 
# File 'lib/fileutils.rb', line 369

def ln_s(src, dest, force: nil, noop: nil, verbose: nil)
  fu_output_message "ln -s#{force ? 'f' : ''} #{[src,dest].flatten.join ' '}" if verbose
  return if noop
  fu_each_src_dest0(src, dest) do |s,d|
    remove_file d, true if force
    File.symlink s, d
  end
end

.ln_sf(src, dest, noop: nil, verbose: nil) ⇒ Object

:call-seq:

FileUtils.ln_sf(*args)

Same as

FileUtils.ln_s(*args, force: true)



390
391
392
 
# File 'lib/fileutils.rb', line 390

def ln_sf(src, dest, noop: nil, verbose: nil)
  ln_s src, dest, force: true, noop: noop, verbose: verbose
end

.makedirs ⇒ Object

Creates a directory and all its parent directories. For example,

FileUtils.mkdir_p '/usr/local/lib/ruby'

causes to make following directories, if they do not exist.

  • /usr

  • /usr/local

  • /usr/local/lib

  • /usr/local/lib/ruby

You can pass several directories at a time in a list.



240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
 
# File 'lib/fileutils.rb', line 240

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.map {|path| remove_trailing_slash(path)}.each do |path|
    # optimize for the most common case
    begin
      fu_mkdir path, mode
      next
    rescue SystemCallError
      next if File.directory?(path)
    end

    stack = []
    until path == stack.last   # dirname("/")=="/", dirname("C:/")=="C:/"
      stack.push path
      path = File.dirname(path)
    end
    stack.pop                 # root directory should exist
    stack.reverse_each do |dir|
      begin
        fu_mkdir dir, mode
      rescue SystemCallError
        raise unless File.directory?(dir)
      end
    end
  end

  return *list
end

.mkdir(list, mode: nil, noop: nil, verbose: nil) ⇒ Object

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



180
181
182
183
184
185
186
187
188
 
# File 'lib/fileutils.rb', line 180

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

.mkdir_p(list, mode: nil, noop: nil, verbose: nil) ⇒ Object

Creates a directory and all its parent directories. For example,

FileUtils.mkdir_p '/usr/local/lib/ruby'

causes to make following directories, if they do not exist.

  • /usr

  • /usr/local

  • /usr/local/lib

  • /usr/local/lib/ruby

You can pass several directories at a time in a list.



206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
 
# File 'lib/fileutils.rb', line 206

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.map {|path| remove_trailing_slash(path)}.each do |path|
    # optimize for the most common case
    begin
      fu_mkdir path, mode
      next
    rescue SystemCallError
      next if File.directory?(path)
    end

    stack = []
    until path == stack.last   # dirname("/")=="/", dirname("C:/")=="C:/"
      stack.push path
      path = File.dirname(path)
    end
    stack.pop                 # root directory should exist
    stack.reverse_each do |dir|
      begin
        fu_mkdir dir, mode
      rescue SystemCallError
        raise unless File.directory?(dir)
      end
    end
  end

  return *list
end

.mkpath ⇒ Object

Creates a directory and all its parent directories. For example,

FileUtils.mkdir_p '/usr/local/lib/ruby'

causes to make following directories, if they do not exist.

  • /usr

  • /usr/local

  • /usr/local/lib

  • /usr/local/lib/ruby

You can pass several directories at a time in a list.



239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
 
# File 'lib/fileutils.rb', line 239

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.map {|path| remove_trailing_slash(path)}.each do |path|
    # optimize for the most common case
    begin
      fu_mkdir path, mode
      next
    rescue SystemCallError
      next if File.directory?(path)
    end

    stack = []
    until path == stack.last   # dirname("/")=="/", dirname("C:/")=="C:/"
      stack.push path
      path = File.dirname(path)
    end
    stack.pop                 # root directory should exist
    stack.reverse_each do |dir|
      begin
        fu_mkdir dir, mode
      rescue SystemCallError
        raise unless File.directory?(dir)
      end
    end
  end

  return *list
end

.move ⇒ Object

Moves file(s) src to dest. If file and dest exist on the different disk partition, the file is copied then the original file is removed.

FileUtils.mv 'badname.rb', 'goodname.rb'
FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', force: true  # no error

FileUtils.mv %w(junk.txt dust.txt), '/home/foo/.trash/'
FileUtils.mv Dir.glob('test*.rb'), 'test', noop: true, verbose: true



565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
 
# File 'lib/fileutils.rb', line 565

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

.mv(src, dest, force: nil, noop: nil, verbose: nil, secure: nil) ⇒ Object

Moves file(s) src to dest. If file and dest exist on the different disk partition, the file is copied then the original file is removed.

FileUtils.mv 'badname.rb', 'goodname.rb'
FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', force: true  # no error

FileUtils.mv %w(junk.txt dust.txt), '/home/foo/.trash/'
FileUtils.mv Dir.glob('test*.rb'), 'test', noop: true, verbose: true



536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
 
# File 'lib/fileutils.rb', line 536

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

.options ⇒ Object

Returns an Array of option names.

p FileUtils.options  #=> ["noop", "force", "verbose", "preserve", "mode"]



1649
1650
1651
 
# File 'lib/fileutils.rb', line 1649

def self.options
  OPT_TABLE.values.flatten.uniq.map {|sym| sym.to_s }
end

.options_of(mid) ⇒ Object

Returns an Array of option names of the method mid.

p FileUtils.options_of(:rm)  #=> ["noop", "verbose", "force"]



1670
1671
1672
 
# File 'lib/fileutils.rb', line 1670

def self.options_of(mid)
  OPT_TABLE[mid.to_s].map {|sym| sym.to_s }
end

.private_module_function(name) ⇒ Object

:nodoc:



107
108
109
110
 
# File 'lib/fileutils.rb', line 107

def self.private_module_function(name)   #:nodoc:
  module_function name
  private_class_method name
end

.pwd ⇒ Object

Returns the name of the current directory.



115
116
117
 
# File 'lib/fileutils.rb', line 115

def pwd
  Dir.pwd
end

.remove ⇒ Object

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



587
588
589
590
591
592
593
594
595
 
# File 'lib/fileutils.rb', line 587

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

.remove_dir(path, force = false) ⇒ Object

Removes a directory dir and its contents recursively. This method ignores StandardError if force is true.



805
806
807
 
# File 'lib/fileutils.rb', line 805

def remove_dir(path, force = false)
  remove_entry path, force   # FIXME?? check if it is a directory
end

.remove_entry(path, force = false) ⇒ Object

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.



777
778
779
780
781
782
783
784
785
786
787
 
# File 'lib/fileutils.rb', line 777

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

.remove_entry_secure(path, force = false) ⇒ Object

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:

For fileutils.rb, this vulnerability is reported in [ruby-dev:26100].



684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
 
# File 'lib/fileutils.rb', line 684

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

.remove_file(path, force = false) ⇒ Object

Removes a file path. This method ignores StandardError if force is true.



794
795
796
797
798
 
# File 'lib/fileutils.rb', line 794

def remove_file(path, force = false)
  Entry_.new(path).remove_file
rescue
  raise unless force
end

.rm(list, force: nil, noop: nil, verbose: nil) ⇒ Object

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



576
577
578
579
580
581
582
583
584
 
# File 'lib/fileutils.rb', line 576

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

.rm_f(list, noop: nil, verbose: nil) ⇒ Object

Equivalent to

FileUtils.rm(list, force: true)



595
596
597
 
# File 'lib/fileutils.rb', line 595

def rm_f(list, noop: nil, verbose: nil)
  rm list, force: true, noop: noop, verbose: verbose
end

.rm_r(list, force: nil, noop: nil, verbose: nil, secure: nil) ⇒ Object

remove files list[0] list[1]… If list[n] is a directory, removes its all contents recursively. This method ignores StandardError when :force option is set.

FileUtils.rm_r Dir.glob('/tmp/*')
FileUtils.rm_r 'some_dir', force: true

WARNING: This method causes local vulnerability if one of parent directories or removing directory tree are world writable (including /tmp, whose permission is 1777), and the current process has strong privilege such as Unix super user (root), and the system has symbolic link. For secure removing, read the documentation of remove_entry_secure carefully, and set :secure option to true. Default is secure: false.

NOTE: This method calls remove_entry_secure if :secure option is set. See also remove_entry_secure.



622
623
624
625
626
627
628
629
630
631
632
633
 
# File 'lib/fileutils.rb', line 622

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

.rm_rf(list, noop: nil, verbose: nil, secure: nil) ⇒ Object

Equivalent to

FileUtils.rm_r(list, force: true)

WARNING: This method causes local vulnerability. Read the documentation of rm_r first.



644
645
646
 
# File 'lib/fileutils.rb', line 644

def rm_rf(list, noop: nil, verbose: nil, secure: nil)
  rm_r list, force: true, noop: noop, verbose: verbose, secure: secure
end

.rmdir(list, parents: nil, noop: nil, verbose: nil) ⇒ Object

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



263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
 
# File 'lib/fileutils.rb', line 263

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

.rmtree ⇒ Object

Equivalent to

FileUtils.rm_r(list, force: true)

WARNING: This method causes local vulnerability. Read the documentation of rm_r first.



649
650
651
 
# File 'lib/fileutils.rb', line 649

def rm_rf(list, noop: nil, verbose: nil, secure: nil)
  rm_r list, force: true, noop: noop, verbose: verbose, secure: secure
end

.safe_unlink ⇒ Object

Equivalent to

FileUtils.rm(list, force: true)



600
601
602
 
# File 'lib/fileutils.rb', line 600

def rm_f(list, noop: nil, verbose: nil)
  rm list, force: true, noop: noop, verbose: verbose
end

.symlink ⇒ Object

:call-seq:

FileUtils.ln_s(target, link, force: nil, noop: nil, verbose: nil)
FileUtils.ln_s(target,  dir, force: nil, noop: nil, verbose: nil)
FileUtils.ln_s(targets, dir, force: nil, noop: nil, verbose: nil)

In the first form, creates a symbolic link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.

FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby'
FileUtils.ln_s 'verylongsourcefilename.c', 'c', force: true

In the second form, creates a link dir/target pointing to target. In the third form, creates several symbolic links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.

FileUtils.ln_s Dir.glob('/bin/*.rb'), '/home/foo/bin'



379
380
381
382
383
384
385
386
 
# File 'lib/fileutils.rb', line 379

def ln_s(src, dest, force: nil, noop: nil, verbose: nil)
  fu_output_message "ln -s#{force ? 'f' : ''} #{[src,dest].flatten.join ' '}" if verbose
  return if noop
  fu_each_src_dest0(src, dest) do |s,d|
    remove_file d, true if force
    File.symlink s, d
  end
end

.touch(list, noop: nil, verbose: nil, mtime: nil, nocreate: nil) ⇒ Object

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'



1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
 
# File 'lib/fileutils.rb', line 1137

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

.uptodate?(new, old_list) ⇒ Boolean

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'

Returns:

  • (Boolean) 


155
156
157
158
159
160
161
162
163
164
 
# File 'lib/fileutils.rb', line 155

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

Instance Method Details

#apply_mask(mode, user_mask, op, mode_mask) ⇒ Object

:nodoc:



907
908
909
910
911
912
913
914
915
916
 
# File 'lib/fileutils.rb', line 907

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

#fu_get_gid(group) ⇒ Object

:nodoc:



1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
 
# File 'lib/fileutils.rb', line 1116

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

#fu_get_uid(user) ⇒ Object

:nodoc:



1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
 
# File 'lib/fileutils.rb', line 1102

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

#fu_have_symlink? ⇒ Boolean

:nodoc:

Returns:

  • (Boolean) 


756
757
758
759
760
761
762
 
# File 'lib/fileutils.rb', line 756

def fu_have_symlink?   #:nodoc:
  File.symlink nil, nil
rescue NotImplementedError
  return false
rescue TypeError
  return true
end

#fu_mkdir(path, mode) ⇒ Object

:nodoc:



244
245
246
247
248
249
250
251
252
 
# File 'lib/fileutils.rb', line 244

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

#fu_mode(mode, path) ⇒ Object

:nodoc:



971
972
973
 
# File 'lib/fileutils.rb', line 971

def fu_mode(mode, path)  #:nodoc:
  mode.is_a?(String) ? symbolic_modes_to_i(mode, path) : mode
end

#fu_stat_identical_entry?(a, b) ⇒ Boolean

:nodoc:

Returns:

  • (Boolean) 


765
766
767
 
# File 'lib/fileutils.rb', line 765

def fu_stat_identical_entry?(a, b)   #:nodoc:
  a.dev == b.dev and a.ino == b.ino
end

#mode_to_s(mode) ⇒ Object

:nodoc:



976
977
978
 
# File 'lib/fileutils.rb', line 976

def mode_to_s(mode)  #:nodoc:
  mode.is_a?(String) ? mode : "%o" % mode
end

#remove_trailing_slash(dir) ⇒ Object

:nodoc:



167
168
169
 
# File 'lib/fileutils.rb', line 167

def remove_trailing_slash(dir)   #:nodoc:
  dir == '/' ? dir : dir.chomp(?/)
end

#symbolic_modes_to_i(mode_sym, path) ⇒ Object

:nodoc:



919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
 
# File 'lib/fileutils.rb', line 919

def symbolic_modes_to_i(mode_sym, path)  #:nodoc:
  mode = if File::Stat === path
           path.mode
         else
           File.stat(path).mode
         end
  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 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

#user_mask(target) ⇒ Object

:nodoc:



889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
 
# File 'lib/fileutils.rb', line 889

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