Class: Pathname

Inherits:
Object
  • Object
show all
Defined in:
lib/rubysl/pathname/pathname.rb

Overview

Pathname

Pathname represents a pathname which locates a file in a filesystem. The pathname depends on OS: Unix, Windows, etc. Pathname library works with pathnames of local OS. However non-Unix pathnames are supported experimentally.

It does not represent the file itself. A Pathname can be relative or absolute. It’s not until you try to reference the file that it even matters whether the file exists or not.

Pathname is immutable. It has no method for destructive update.

The value of this class is to manipulate file path information in a neater way than standard Ruby provides. The examples below demonstrate the difference. All functionality from File, FileTest, and some from Dir and FileUtils is included, in an unsurprising way. It is essentially a facade for all of these, and more.

Examples

Example 1: Using Pathname

require 'pathname'
pn = Pathname.new("/usr/bin/ruby")
size = pn.size              # 27662
isdir = pn.directory?       # false
dir  = pn.dirname           # Pathname:/usr/bin
base = pn.basename          # Pathname:ruby
dir, base = pn.split        # [Pathname:/usr/bin, Pathname:ruby]
data = pn.read
pn.open { |f| _ }
pn.each_line { |line| _ }

Example 2: Using standard Ruby

pn = "/usr/bin/ruby"
size = File.size(pn)        # 27662
isdir = File.directory?(pn) # false
dir  = File.dirname(pn)     # "/usr/bin"
base = File.basename(pn)    # "ruby"
dir, base = File.split(pn)  # ["/usr/bin", "ruby"]
data = File.read(pn)
File.open(pn) { |f| _ }
File.foreach(pn) { |line| _ }

Example 3: Special features

p1 = Pathname.new("/usr/lib")   # Pathname:/usr/lib
p2 = p1 + "ruby/1.8"            # Pathname:/usr/lib/ruby/1.8
p3 = p1.parent                  # Pathname:/usr
p4 = p2.relative_path_from(p3)  # Pathname:lib/ruby/1.8
pwd = Pathname.pwd              # Pathname:/home/gavin
pwd.absolute?                   # true
p5 = Pathname.new "."           # Pathname:.
p5 = p5 + "music/../articles"   # Pathname:music/../articles
p5.cleanpath                    # Pathname:articles
p5.realpath                     # Pathname:/home/gavin/articles
p5.children                     # [Pathname:/home/gavin/articles/linux, ...]

Breakdown of functionality

Core methods

These methods are effectively manipulating a String, because that’s all a path is. Except for #mountpoint?, #children, #each_child, #realdirpath and #realpath, they don’t access the filesystem.

  • +

  • #join

  • #parent

  • #root?

  • #absolute?

  • #relative?

  • #relative_path_from

  • #each_filename

  • #cleanpath

  • #realpath

  • #realdirpath

  • #children

  • #each_child

  • #mountpoint?

File status predicate methods

These methods are a facade for FileTest:

  • #blockdev?

  • #chardev?

  • #directory?

  • #executable?

  • #executable_real?

  • #exist?

  • #file?

  • #grpowned?

  • #owned?

  • #pipe?

  • #readable?

  • #world_readable?

  • #readable_real?

  • #setgid?

  • #setuid?

  • #size

  • #size?

  • #socket?

  • #sticky?

  • #symlink?

  • #writable?

  • #world_writable?

  • #writable_real?

  • #zero?

File property and manipulation methods

These methods are a facade for File:

  • #atime

  • #ctime

  • #mtime

  • #chmod(mode)

  • #lchmod(mode)

  • #chown(owner, group)

  • #lchown(owner, group)

  • #fnmatch(pattern, *args)

  • #fnmatch?(pattern, *args)

  • #ftype

  • #make_link(old)

  • #open(*args, &block)

  • #readlink

  • #rename(to)

  • #stat

  • #lstat

  • #make_symlink(old)

  • #truncate(length)

  • #utime(atime, mtime)

  • #basename(*args)

  • #dirname

  • #extname

  • #expand_path(*args)

  • #split

Directory methods

These methods are a facade for Dir:

  • Pathname.glob(*args)

  • Pathname.getwd / Pathname.pwd

  • #rmdir

  • #entries

  • #each_entry(&block)

  • #mkdir(*args)

  • #opendir(*args)

IO

These methods are a facade for IO:

  • #each_line(*args, &block)

  • #read(*args)

  • #binread(*args)

  • #write(*args)

  • #binwrite(*args)

  • #readlines(*args)

  • #sysopen(*args)

Utilities

These methods are a mixture of Find, FileUtils, and others:

  • #find(&block)

  • #mkpath

  • #rmtree

  • #unlink / #delete

Method documentation

As the above section shows, most of the methods in Pathname are facades. The documentation for these methods generally just says, for instance, “See FileTest.writable?”, as you should be familiar with the original method anyway, and its documentation (e.g. through ri) will contain more information. In some cases, a brief description will follow.

Constant Summary collapse

TO_PATH =

to_path is implemented so Pathname objects are usable with File.open, etc.

:to_path
SAME_PATHS =
if File::FNM_SYSCASE.nonzero?
  proc {|a, b| a.casecmp(b).zero?}
else
  proc {|a, b| a == b}
end
SEPARATOR_LIST =
"#{Regexp.quote File::SEPARATOR}"
SEPARATOR_PAT =
/#{Regexp.quote File::SEPARATOR}/

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Pathname

Create a Pathname object from the given String (or String-like object). If path contains a NUL character (\0), an ArgumentError is raised.



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# File 'lib/rubysl/pathname/pathname.rb', line 228

def initialize(path)
  if path.respond_to? TO_PATH
    path = path.__send__(TO_PATH)
  elsif path.respond_to? :to_str
    path = path.__send__(:to_str)
  end

  @path = path.dup

  if /\0/ =~ @path
    raise ArgumentError, "pathname contains \\0: #{@path.inspect}"
  end

  self.taint if @path.tainted?
end

Class Method Details

.birthtime(file) ⇒ Object



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# File 'lib/rubysl/pathname/pathname.rb', line 220

def self.birthtime(file)
  File.birthtime(file)
end

.getwdObject Also known as: pwd

See Dir.getwd. Returns the current working directory as a Pathname.



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# File 'lib/rubysl/pathname/pathname.rb', line 214

def self.getwd() self.new(Dir.getwd) end

.glob(*args) ⇒ Object

See Dir.glob. Returns or yields Pathname objects.



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# File 'lib/rubysl/pathname/pathname.rb', line 205

def self.glob(*args) # :yield: pathname
  if block_given?
    Dir.glob(*args) {|f| yield self.new(f) }
  else
    Dir.glob(*args).map {|f| self.new(f) }
  end
end

Instance Method Details

#+(other) ⇒ Object Also known as: /

Pathname#+ appends a pathname fragment to this one to produce a new Pathname object.

p1 = Pathname.new("/usr")      # Pathname:/usr
p2 = p1 + "bin/ruby"           # Pathname:/usr/bin/ruby
p3 = p1 + "/etc/passwd"        # Pathname:/etc/passwd

This method doesn’t access the file system; it is pure string manipulation.



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# File 'lib/rubysl/pathname/pathname.rb', line 604

def +(other)
  other = Pathname.new(other) unless Pathname === other
  Pathname.new(plus(@path, other.to_s))
end

#<=>(other) ⇒ Object

Provides for comparing pathnames, case-sensitively.



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# File 'lib/rubysl/pathname/pathname.rb', line 261

def <=>(other)
  return nil unless Pathname === other
  @path.tr('/', "\0") <=> other.to_s.tr('/', "\0")
end

#==(other) ⇒ Object Also known as: ===, eql?

Compare this pathname with other. The comparison is string-based. Be aware that two different paths (foo.txt and ./foo.txt) can refer to the same file.



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# File 'lib/rubysl/pathname/pathname.rb', line 253

def ==(other)
  return false unless Pathname === other
  other.to_s == @path
end

#absolute?Boolean

Predicate method for testing whether a path is absolute. It returns true if the pathname begins with a slash.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 511

def absolute?
  !relative?
end

#ascend {|_self| ... } ⇒ Object

Iterates over and yields a new Pathname object for each element in the given path in ascending order.

Pathname.new('/path/to/some/file.rb').ascend {|v| p v}
   #<Pathname:/path/to/some/file.rb>
   #<Pathname:/path/to/some>
   #<Pathname:/path/to>
   #<Pathname:/path>
   #<Pathname:/>

Pathname.new('path/to/some/file.rb').ascend {|v| p v}
   #<Pathname:path/to/some/file.rb>
   #<Pathname:path/to/some>
   #<Pathname:path/to>
   #<Pathname:path>

It doesn’t access actual filesystem.

This method is available since 1.8.5.

Yields:

  • (_self)

Yield Parameters:

  • _self (Pathname)

    the object that the method was called on



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# File 'lib/rubysl/pathname/pathname.rb', line 584

def ascend
  path = @path
  yield self
  while r = chop_basename(path)
    path, name = r
    break if path.empty?
    yield self.class.new(del_trailing_separator(path))
  end
end

#atimeObject

See File.atime. Returns last access time.



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# File 'lib/rubysl/pathname/pathname.rb', line 815

def atime() File.atime(@path) end

#basename(*args) ⇒ Object

See File.basename. Returns the last component of the path.



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# File 'lib/rubysl/pathname/pathname.rb', line 876

def basename(*args) self.class.new(File.basename(@path, *args)) end

#binread(*args) ⇒ Object

See IO.binread. Returns all the bytes from the file, or the first N if specified.



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# File 'lib/rubysl/pathname/pathname.rb', line 800

def binread(*args) IO.binread(@path, *args) end

#binwrite(*args) ⇒ Object

See IO.binwrite. Returns the number of bytes written to the file.



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# File 'lib/rubysl/pathname/pathname.rb', line 806

def binwrite(*args) IO.binwrite(@path, *args) end

#birthtimeObject



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# File 'lib/rubysl/pathname/pathname.rb', line 1038

def birthtime
  File.birthtime(@path)
end

#blockdev?Boolean

See FileTest.blockdev?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 892

def blockdev?() FileTest.blockdev?(@path) end

#chardev?Boolean

See FileTest.chardev?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 895

def chardev?() FileTest.chardev?(@path) end

#children(with_directory = true) ⇒ Object

Returns the children of the directory (files and subdirectories, not recursive) as an array of Pathname objects. By default, the returned pathnames will have enough information to access the files. If you set with_directory to false, then the returned pathnames will contain the filename only.

For example:

pn = Pathname("/usr/lib/ruby/1.8")
pn.children
    # -> [ Pathname:/usr/lib/ruby/1.8/English.rb,
           Pathname:/usr/lib/ruby/1.8/Env.rb,
           Pathname:/usr/lib/ruby/1.8/abbrev.rb, ... ]
pn.children(false)
    # -> [ Pathname:English.rb, Pathname:Env.rb, Pathname:abbrev.rb, ... ]

Note that the result never contain the entries . and .. in the directory because they are not children.

This method has existed since 1.8.1.



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# File 'lib/rubysl/pathname/pathname.rb', line 693

def children(with_directory=true)
  with_directory = false if @path == '.'
  result = []
  Dir.foreach(@path) {|e|
    next if e == '.' || e == '..'
    if with_directory
      result << self.class.new(File.join(@path, e))
    else
      result << self.class.new(e)
    end
  }
  result
end

#chmod(mode) ⇒ Object

See File.chmod. Changes permissions.



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# File 'lib/rubysl/pathname/pathname.rb', line 824

def chmod(mode) File.chmod(mode, @path) end

#chown(owner, group) ⇒ Object

See File.chown. Change owner and group of file.



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# File 'lib/rubysl/pathname/pathname.rb', line 830

def chown(owner, group) File.chown(owner, group, @path) end

#cleanpath(consider_symlink = false) ⇒ Object

Returns clean pathname of self with consecutive slashes and useless dots removed. The filesystem is not accessed.

If consider_symlink is true, then a more conservative algorithm is used to avoid breaking symbolic linkages. This may retain more .. entries than absolutely necessary, but without accessing the filesystem, this can’t be avoided. See #realpath.



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# File 'lib/rubysl/pathname/pathname.rb', line 361

def cleanpath(consider_symlink=false)
  if consider_symlink
    cleanpath_conservative
  else
    cleanpath_aggressive
  end
end

#ctimeObject

See File.ctime. Returns last (directory entry, not file) change time.



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# File 'lib/rubysl/pathname/pathname.rb', line 818

def ctime() File.ctime(@path) end

#descendObject

Iterates over and yields a new Pathname object for each element in the given path in descending order.

Pathname.new('/path/to/some/file.rb').descend {|v| p v}
   #<Pathname:/>
   #<Pathname:/path>
   #<Pathname:/path/to>
   #<Pathname:/path/to/some>
   #<Pathname:/path/to/some/file.rb>

Pathname.new('path/to/some/file.rb').descend {|v| p v}
   #<Pathname:path>
   #<Pathname:path/to>
   #<Pathname:path/to/some>
   #<Pathname:path/to/some/file.rb>

It doesn’t access actual filesystem.

This method is available since 1.8.5.



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# File 'lib/rubysl/pathname/pathname.rb', line 557

def descend
  vs = []
  ascend {|v| vs << v }
  vs.reverse_each {|v| yield v }
  nil
end

#directory?Boolean

See FileTest.directory?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 910

def directory?() FileTest.directory?(@path) end

#dirnameObject

See File.dirname. Returns all but the last component of the path.



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# File 'lib/rubysl/pathname/pathname.rb', line 879

def dirname() self.class.new(File.dirname(@path)) end

#each_child(with_directory = true, &b) ⇒ Object

Iterates over the children of the directory (files and subdirectories, not recursive). It yields Pathname object for each child. By default, the yielded pathnames will have enough information to access the files. If you set with_directory to false, then the returned pathnames will contain the filename only.

Pathname("/usr/local").each_child {|f| p f }
#=> #<Pathname:/usr/local/share>
#   #<Pathname:/usr/local/bin>
#   #<Pathname:/usr/local/games>
#   #<Pathname:/usr/local/lib>
#   #<Pathname:/usr/local/include>
#   #<Pathname:/usr/local/sbin>
#   #<Pathname:/usr/local/src>
#   #<Pathname:/usr/local/man>

Pathname("/usr/local").each_child(false) {|f| p f }
#=> #<Pathname:share>
#   #<Pathname:bin>
#   #<Pathname:games>
#   #<Pathname:lib>
#   #<Pathname:include>
#   #<Pathname:sbin>
#   #<Pathname:src>
#   #<Pathname:man>


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# File 'lib/rubysl/pathname/pathname.rb', line 733

def each_child(with_directory=true, &b)
  children(with_directory).each(&b)
end

#each_entry(&block) ⇒ Object

Iterates over the entries (files and subdirectories) in the directory. It yields a Pathname object for each entry.

This method has existed since 1.8.1.



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# File 'lib/rubysl/pathname/pathname.rb', line 971

def each_entry(&block) # :yield: pathname
  Dir.foreach(@path) {|f| yield self.class.new(f) }
end

#each_filenameObject

Iterates over each component of the path.

Pathname.new("/usr/bin/ruby").each_filename {|filename| ... }
  # yields "usr", "bin", and "ruby".


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# File 'lib/rubysl/pathname/pathname.rb', line 530

def each_filename # :yield: filename
  return to_enum(__method__) unless block_given?
  prefix, names = split_names(@path)
  names.each {|filename| yield filename }
  nil
end

#each_line(*args, &block) ⇒ Object

#each_line iterates over the line in the file. It yields a String object for each line.

This method has existed since 1.8.1.



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# File 'lib/rubysl/pathname/pathname.rb', line 790

def each_line(*args, &block) # :yield: line
  IO.foreach(@path, *args, &block)
end

#entriesObject

Return the entries (files and subdirectories) in the directory, each as a Pathname object.



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# File 'lib/rubysl/pathname/pathname.rb', line 965

def entries() Dir.entries(@path).map {|f| self.class.new(f) } end

#executable?Boolean

See FileTest.executable?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 898

def executable?() FileTest.executable?(@path) end

#executable_real?Boolean

See FileTest.executable_real?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 901

def executable_real?() FileTest.executable_real?(@path) end

#exist?Boolean

See FileTest.exist?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 904

def exist?() FileTest.exist?(@path) end

#expand_path(*args) ⇒ Object

See File.expand_path.



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# File 'lib/rubysl/pathname/pathname.rb', line 885

def expand_path(*args) self.class.new(File.expand_path(@path, *args)) end

#extnameObject

See File.extname. Returns the file’s extension.



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# File 'lib/rubysl/pathname/pathname.rb', line 882

def extname() File.extname(@path) end

#file?Boolean

See FileTest.file?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 913

def file?() FileTest.file?(@path) end

#find(&block) ⇒ Object

Pathname#find is an iterator to traverse a directory tree in a depth first manner. It yields a Pathname for each file under “this” directory.

Returns an Enumerator if no block is given.

Since it is implemented by find.rb, Find.prune can be used to control the traverse.

If self is ., yielded pathnames begin with a filename in the current directory, not ./.



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# File 'lib/rubysl/pathname/pathname.rb', line 998

def find(&block) # :yield: pathname
  return to_enum(__method__) unless block_given?
  require 'find'
  if @path == '.'
    Find.find(@path) {|f| yield self.class.new(f.sub(%r{\A\./}, '')) }
  else
    Find.find(@path) {|f| yield self.class.new(f) }
  end
end

#fnmatch(pattern, *args) ⇒ Object

See File.fnmatch. Return true if the receiver matches the given pattern.



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# File 'lib/rubysl/pathname/pathname.rb', line 837

def fnmatch(pattern, *args) File.fnmatch(pattern, @path, *args) end

#fnmatch?(pattern, *args) ⇒ Boolean

See File.fnmatch? (same as #fnmatch).

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 840

def fnmatch?(pattern, *args) File.fnmatch?(pattern, @path, *args) end

#freezeObject



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# File 'lib/rubysl/pathname/pathname.rb', line 244

def freeze() super; @path.freeze; self end

#ftypeObject

See File.ftype. Returns “type” of file (“file”, “directory”, etc).



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# File 'lib/rubysl/pathname/pathname.rb', line 844

def ftype() File.ftype(@path) end

#grpowned?Boolean

See FileTest.grpowned?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 907

def grpowned?() FileTest.grpowned?(@path) end

#hashObject

:nodoc:



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# File 'lib/rubysl/pathname/pathname.rb', line 266

def hash # :nodoc:
  @path.hash
end

#inspectObject

:nodoc:



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# File 'lib/rubysl/pathname/pathname.rb', line 278

def inspect # :nodoc:
  "#<#{self.class}:#{@path}>"
end

#join(*args) ⇒ Object

Pathname#join joins pathnames.

path0.join(path1, ..., pathN) is the same as path0 + path1 + ... + pathN.



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# File 'lib/rubysl/pathname/pathname.rb', line 659

def join(*args)
  args.unshift self
  result = args.pop
  result = Pathname.new(result) unless Pathname === result
  return result if result.absolute?
  args.reverse_each {|arg|
    arg = Pathname.new(arg) unless Pathname === arg
    result = arg + result
    return result if result.absolute?
  }
  result
end

#lchmod(mode) ⇒ Object

See File.lchmod.



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# File 'lib/rubysl/pathname/pathname.rb', line 827

def lchmod(mode) File.lchmod(mode, @path) end

#lchown(owner, group) ⇒ Object

See File.lchown.



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# File 'lib/rubysl/pathname/pathname.rb', line 833

def lchown(owner, group) File.lchown(owner, group, @path) end

#lstatObject

See File.lstat.



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# File 'lib/rubysl/pathname/pathname.rb', line 864

def lstat() File.lstat(@path) end

See File.link. Creates a hard link.



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# File 'lib/rubysl/pathname/pathname.rb', line 847

def make_link(old) File.link(old, @path) end

See File.symlink. Creates a symbolic link.



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# File 'lib/rubysl/pathname/pathname.rb', line 867

def make_symlink(old) File.symlink(old, @path) end

#mkdir(*args) ⇒ Object

See Dir.mkdir. Create the referenced directory.



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# File 'lib/rubysl/pathname/pathname.rb', line 976

def mkdir(*args) Dir.mkdir(@path, *args) end

#mkpathObject

See FileUtils.mkpath. Creates a full path, including any intermediate directories that don’t yet exist.



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# File 'lib/rubysl/pathname/pathname.rb', line 1010

def mkpath
  require 'fileutils'
  FileUtils.mkpath(@path)
  nil
end

#mountpoint?Boolean

#mountpoint? returns true if self points to a mountpoint.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 487

def mountpoint?
  begin
    stat1 = self.lstat
    stat2 = self.parent.lstat
    stat1.dev == stat2.dev && stat1.ino == stat2.ino ||
      stat1.dev != stat2.dev
  rescue Errno::ENOENT
    false
  end
end

#mtimeObject

See File.mtime. Returns last modification time.



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# File 'lib/rubysl/pathname/pathname.rb', line 821

def mtime() File.mtime(@path) end

#open(*args, &block) ⇒ Object

See File.open. Opens the file for reading or writing.



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# File 'lib/rubysl/pathname/pathname.rb', line 850

def open(*args, &block) # :yield: file
  File.open(@path, *args, &block)
end

#opendir(&block) ⇒ Object

See Dir.open.



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# File 'lib/rubysl/pathname/pathname.rb', line 982

def opendir(&block) # :yield: dir
  Dir.open(@path, &block)
end

#owned?Boolean

See FileTest.owned?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 922

def owned?() FileTest.owned?(@path) end

#parentObject

#parent returns the parent directory.

This is same as self + '..'.



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# File 'lib/rubysl/pathname/pathname.rb', line 482

def parent
  self + '..'
end

#pipe?Boolean

See FileTest.pipe?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 916

def pipe?() FileTest.pipe?(@path) end

#read(*args) ⇒ Object

See IO.read. Returns all data from the file, or the first N bytes if specified.



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# File 'lib/rubysl/pathname/pathname.rb', line 796

def read(*args) IO.read(@path, *args) end

#readable?Boolean

See FileTest.readable?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 925

def readable?() FileTest.readable?(@path) end

#readable_real?Boolean

See FileTest.readable_real?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 931

def readable_real?() FileTest.readable_real?(@path) end

#readlines(*args) ⇒ Object

See IO.readlines. Returns all the lines from the file.



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# File 'lib/rubysl/pathname/pathname.rb', line 809

def readlines(*args) IO.readlines(@path, *args) end

See File.readlink. Read symbolic link.



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# File 'lib/rubysl/pathname/pathname.rb', line 855

def readlink() self.class.new(File.readlink(@path)) end

#realdirpath(basedir = nil) ⇒ Object

Returns the real (absolute) pathname of self in the actual filesystem. The real pathname doesn’t contain symlinks or useless dots.

The last component of the real pathname can be nonexistent.



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# File 'lib/rubysl/pathname/pathname.rb', line 475

def realdirpath(basedir=nil)
  self.class.new(File.realdirpath(@path, basedir))
end

#realpath(basedir = nil) ⇒ Object

Returns the real (absolute) pathname of self in the actual filesystem not containing symlinks or useless dots.

All components of the pathname must exist when this method is called.



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# File 'lib/rubysl/pathname/pathname.rb', line 465

def realpath(basedir=nil)
  self.class.new(File.realpath(@path, basedir))
end

#relative?Boolean

The opposite of #absolute?

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 516

def relative?
  path = @path
  while r = chop_basename(path)
    path, basename = r
  end
  path == ''
end

#relative_path_from(base_directory) ⇒ Object

#relative_path_from returns a relative path from the argument to the receiver. If self is absolute, the argument must be absolute too. If self is relative, the argument must be relative too.

#relative_path_from doesn’t access the filesystem. It assumes no symlinks.

ArgumentError is raised when it cannot find a relative path.

This method has existed since 1.8.1.



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# File 'lib/rubysl/pathname/pathname.rb', line 748

def relative_path_from(base_directory)
  dest_directory = self.cleanpath.to_s
  base_directory = base_directory.cleanpath.to_s
  dest_prefix = dest_directory
  dest_names = []
  while r = chop_basename(dest_prefix)
    dest_prefix, basename = r
    dest_names.unshift basename if basename != '.'
  end
  base_prefix = base_directory
  base_names = []
  while r = chop_basename(base_prefix)
    base_prefix, basename = r
    base_names.unshift basename if basename != '.'
  end
  unless SAME_PATHS[dest_prefix, base_prefix]
    raise ArgumentError, "different prefix: #{dest_prefix.inspect} and #{base_directory.inspect}"
  end
  while !dest_names.empty? &&
        !base_names.empty? &&
        SAME_PATHS[dest_names.first, base_names.first]
    dest_names.shift
    base_names.shift
  end
  if base_names.include? '..'
    raise ArgumentError, "base_directory has ..: #{base_directory.inspect}"
  end
  base_names.fill('..')
  relpath_names = base_names + dest_names
  if relpath_names.empty?
    Pathname.new('.')
  else
    Pathname.new(File.join(*relpath_names))
  end
end

#rename(to) ⇒ Object

See File.rename. Rename the file.



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# File 'lib/rubysl/pathname/pathname.rb', line 858

def rename(to) File.rename(@path, to) end

#rmdirObject

See Dir.rmdir. Remove the referenced directory.



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# File 'lib/rubysl/pathname/pathname.rb', line 979

def rmdir() Dir.rmdir(@path) end

#rmtreeObject

See FileUtils.rm_r. Deletes a directory and all beneath it.



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# File 'lib/rubysl/pathname/pathname.rb', line 1017

def rmtree
  # The name "rmtree" is borrowed from File::Path of Perl.
  # File::Path provides "mkpath" and "rmtree".
  require 'fileutils'
  FileUtils.rm_r(@path)
  nil
end

#root?Boolean

#root? is a predicate for root directories. I.e. it returns true if the pathname consists of consecutive slashes.

It doesn’t access actual filesystem. So it may return false for some pathnames which points to roots such as /usr/...

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 505

def root?
  !!(chop_basename(@path) == nil && /#{SEPARATOR_PAT}/o =~ @path)
end

#setgid?Boolean

See FileTest.setgid?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 937

def setgid?() FileTest.setgid?(@path) end

#setuid?Boolean

See FileTest.setuid?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 934

def setuid?() FileTest.setuid?(@path) end

#sizeObject

See FileTest.size.



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# File 'lib/rubysl/pathname/pathname.rb', line 940

def size() FileTest.size(@path) end

#size?Boolean

See FileTest.size?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 943

def size?() FileTest.size?(@path) end

#socket?Boolean

See FileTest.socket?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 919

def socket?() FileTest.socket?(@path) end

#splitObject

See File.split. Returns the #dirname and the #basename in an Array.



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# File 'lib/rubysl/pathname/pathname.rb', line 889

def split() File.split(@path).map {|f| self.class.new(f) } end

#statObject

See File.stat. Returns a File::Stat object.



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# File 'lib/rubysl/pathname/pathname.rb', line 861

def stat() File.stat(@path) end

#sticky?Boolean

See FileTest.sticky?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 946

def sticky?() FileTest.sticky?(@path) end

#sub(pattern, *rest, &block) ⇒ Object

Return a pathname which is substituted by String#sub.



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# File 'lib/rubysl/pathname/pathname.rb', line 283

def sub(pattern, *rest, &block)
  if block
    path = @path.sub(pattern, *rest) {|*args|
      begin
        old = Thread.current[:pathname_sub_matchdata]
        Thread.current[:pathname_sub_matchdata] = $~
        eval("$~ = Thread.current[:pathname_sub_matchdata]", block.binding)
      ensure
        Thread.current[:pathname_sub_matchdata] = old
      end
      yield(*args)
    }
  else
    path = @path.sub(pattern, *rest)
  end
  self.class.new(path)
end

#sub_ext(repl) ⇒ Object

Return a pathname which the extension of the basename is substituted by repl.

If self has no extension part, repl is appended.



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# File 'lib/rubysl/pathname/pathname.rb', line 313

def sub_ext(repl)
  ext = File.extname(@path)
  self.class.new(@path.chomp(ext) + repl)
end

#symlink?Boolean

See FileTest.symlink?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 949

def symlink?() FileTest.symlink?(@path) end

#sysopen(*args) ⇒ Object

See IO.sysopen.



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# File 'lib/rubysl/pathname/pathname.rb', line 812

def sysopen(*args) IO.sysopen(@path, *args) end

#taintObject



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# File 'lib/rubysl/pathname/pathname.rb', line 245

def taint() super; @path.taint; self end

#to_sObject

Return the path as a String.



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# File 'lib/rubysl/pathname/pathname.rb', line 271

def to_s
  @path.dup
end

#truncate(length) ⇒ Object

See File.truncate. Truncate the file to length bytes.



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# File 'lib/rubysl/pathname/pathname.rb', line 870

def truncate(length) File.truncate(@path, length) end

Removes a file or directory, using File.unlink or Dir.unlink as necessary.



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# File 'lib/rubysl/pathname/pathname.rb', line 1027

def unlink()
  begin
    Dir.unlink @path
  rescue Errno::ENOTDIR
    File.unlink @path
  end
end

#untaintObject



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# File 'lib/rubysl/pathname/pathname.rb', line 246

def untaint() super; @path.untaint; self end

#utime(atime, mtime) ⇒ Object

See File.utime. Update the access and modification times.



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# File 'lib/rubysl/pathname/pathname.rb', line 873

def utime(atime, mtime) File.utime(atime, mtime, @path) end

#world_readable?Boolean

See FileTest.world_readable?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 928

def world_readable?() FileTest.world_readable?(@path) end

#world_writable?Boolean

See FileTest.world_writable?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 955

def world_writable?() FileTest.world_writable?(@path) end

#writable?Boolean

See FileTest.writable?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 952

def writable?() FileTest.writable?(@path) end

#writable_real?Boolean

See FileTest.writable_real?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 958

def writable_real?() FileTest.writable_real?(@path) end

#write(*args) ⇒ Object

See IO.write. Returns the number of bytes written to the file.



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# File 'lib/rubysl/pathname/pathname.rb', line 803

def write(*args) IO.write(@path, *args) end

#zero?Boolean

See FileTest.zero?.

Returns:

  • (Boolean)


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# File 'lib/rubysl/pathname/pathname.rb', line 961

def zero?() FileTest.zero?(@path) end