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Class: Pathname

Relationships & Source Files
Inherits: Object
Defined in: pathname_builtin.rb,
pathname.c

Overview

pathname.rb

Object-Oriented Pathname Class

Author

Tanaka Akira <akr@m17n.org>

Documentation

Author and Gavin Sinclair

For documentation, see class Pathname.

Constant Summary

Class Method Summary

  • .getwd

    Alias for .pwd.

  • .glob(*args)

    Returns or yields Pathname objects.

  • .new(arg) constructor

    Create a Pathname object from the given ::String (or String-like object).

  • .pwd (also: .getwd)

    Returns the current working directory as a Pathname.

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(arg)

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

[ GitHub ] 

  


# File 'pathname.c', line 96



static VALUE
path_initialize(VALUE self, VALUE arg)
{
    VALUE str;
    if (RB_TYPE_P(arg, T_STRING)) {
        str = arg;
    }
    else {
        str = rb_check_funcall(arg, id_to_path, 0, NULL);
        if (str == Qundef)
            str = arg;
        StringValue(str);
    }
    if (memchr(RSTRING_PTR(str), '\0', RSTRING_LEN(str)))
        rb_raise(rb_eArgError, "pathname contains null byte");
    str = rb_obj_dup(str);

    set_strpath(self, str);
    return self;
}


  







Class Method Details



  

    .getwd  
  



  

    

Alias for .pwd.


  









  

    .glob(*args)  
  



  

    

Returns or yields Pathname objects.



Pathname.glob("lib/i*.rb")
    #=> [#<Pathname:lib/ipaddr.rb>, #<Pathname:lib/irb.rb>]



See Dir.glob.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1074



static VALUE
path_s_glob(int argc, VALUE *argv, VALUE klass)
{
    VALUE args[3];
    int n;

    n = rb_scan_args(argc, argv, "12", &args[0], &args[1], &args[2]);
    if (rb_block_given_p()) {
        return rb_block_call_kw(rb_cDir, id_glob, n, args, s_glob_i, klass, RB_PASS_CALLED_KEYWORDS);
    }
    else {
        VALUE ary;
        long i;
        ary = rb_funcallv_kw(rb_cDir, id_glob, n, args, RB_PASS_CALLED_KEYWORDS);
        ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
        for (i = 0; i < RARRAY_LEN(ary); i++) {
            VALUE elt = RARRAY_AREF(ary, i);
            elt = rb_class_new_instance(1, &elt, klass);
            rb_ary_store(ary, i, elt);
        }
        return ary;
    }
}


  








  

    .pwd  
    Also known as: .getwd
  



  

    

Returns the current working directory as a Pathname.



Pathname.getwd
    #=> #<Pathname:/home/zzak/projects/ruby>



See Dir.getwd.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1154



static VALUE
path_s_getwd(VALUE klass)
{
    VALUE str;
    str = rb_funcall(rb_cDir, id_getwd, 0);
    return rb_class_new_instance(1, &str, klass);
}


  







Instance Attribute Details



  

    #absolute?  ⇒ Boolean  (readonly)
  



  

    

Predicate method for testing whether a path is absolute.



It returns true if the pathname begins with a slash.



p = Pathname.new('/im/sure')
p.absolute?
    #=> true

p = Pathname.new('not/so/sure')
p.absolute?
    #=> false


  





  


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# File 'pathname_builtin.rb', line 260



def absolute?
  ABSOLUTE_PATH.match? @path
end


  








  

    #blockdev?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#blockdev?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 831



static VALUE
path_blockdev_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_blockdev_p, 1, get_strpath(self));
}


  








  

    #chardev?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#chardev?.


  





  


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# File 'pathname.c', line 840



static VALUE
path_chardev_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_chardev_p, 1, get_strpath(self));
}


  








  

    #directory?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#directory?.


  





  


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# File 'pathname.c', line 885



static VALUE
path_directory_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_directory_p, 1, get_strpath(self));
}


  








  

    #empty?  ⇒ Boolean  (readonly)
  



  

    

Tests the file is empty.



See Dir#empty? and FileTest#empty?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 1049



static VALUE
path_empty_p(VALUE self)
{

    VALUE path = get_strpath(self);
    if (RTEST(rb_funcall(rb_mFileTest, id_directory_p, 1, path)))
        return rb_funcall(rb_cDir, id_empty_p, 1, path);
    else
        return rb_funcall(rb_mFileTest, id_empty_p, 1, path);
}


  








  

    #executable?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#executable?.


  





  


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# File 'pathname.c', line 849



static VALUE
path_executable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_executable_p, 1, get_strpath(self));
}


  








  

    #executable_real?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#executable_real?.


  





  


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# File 'pathname.c', line 858



static VALUE
path_executable_real_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_executable_real_p, 1, get_strpath(self));
}


  








  

    #exist?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#exist?.


  





  


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# File 'pathname.c', line 867



static VALUE
path_exist_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_exist_p, 1, get_strpath(self));
}


  








  

    #file?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#file?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 894



static VALUE
path_file_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_file_p, 1, get_strpath(self));
}


  








  

    #grpowned?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#grpowned?.


  





  


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# File 'pathname.c', line 876



static VALUE
path_grpowned_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_grpowned_p, 1, get_strpath(self));
}


  








  

    #mountpoint?  ⇒ Boolean  (readonly)
  



  

    

Returns true if self points to a mountpoint.


  





  


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# File 'pathname_builtin.rb', line 228



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


  








  

    #owned?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#owned?.


  





  


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# File 'pathname.c', line 921



static VALUE
path_owned_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_owned_p, 1, get_strpath(self));
}


  








  

    #pipe?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#pipe?.


  





  


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# File 'pathname.c', line 903



static VALUE
path_pipe_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_pipe_p, 1, get_strpath(self));
}


  








  

    #readable?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#readable?.


  





  


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# File 'pathname.c', line 930



static VALUE
path_readable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_readable_p, 1, get_strpath(self));
}


  








  

    #readable_real?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#readable_real?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 948



static VALUE
path_readable_real_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_readable_real_p, 1, get_strpath(self));
}


  








  

    #relative?  ⇒ Boolean  (readonly)
  



  

    

The opposite of #absolute?



It returns false if the pathname begins with a slash.



p = Pathname.new('/im/sure')
p.relative?
    #=> false

p = Pathname.new('not/so/sure')
p.relative?
    #=> true


  





  


  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 275



def relative?
  !absolute?
end


  








  

    #root?  ⇒ Boolean  (readonly)
  



  

    

Predicate method for root directories.  Returns true if the pathname consists of consecutive slashes.



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


  





  


  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 245



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


  








  

    #setgid?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#setgid?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 966



static VALUE
path_setgid_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_setgid_p, 1, get_strpath(self));
}


  








  

    #setuid?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#setuid?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 957



static VALUE
path_setuid_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_setuid_p, 1, get_strpath(self));
}


  








  

    #size   (readonly)
  



  

    

See FileTest#size.


  



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# File 'pathname.c', line 975



static VALUE
path_size(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_size, 1, get_strpath(self));
}


  








  

    #size?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#size?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 984



static VALUE
path_size_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_size_p, 1, get_strpath(self));
}


  








  

    #socket?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#socket?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 912



static VALUE
path_socket_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_socket_p, 1, get_strpath(self));
}


  








  

    #sticky?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#sticky?.


  





  


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# File 'pathname.c', line 993



static VALUE
path_sticky_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_sticky_p, 1, get_strpath(self));
}


  








  

    #symlink?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#symlink?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 1002



static VALUE
path_symlink_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_symlink_p, 1, get_strpath(self));
}


  








  

    #world_readable?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#world_readable?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 939



static VALUE
path_world_readable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_world_readable_p, 1, get_strpath(self));
}


  








  

    #world_writable?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#world_writable?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 1020



static VALUE
path_world_writable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_world_writable_p, 1, get_strpath(self));
}


  








  

    #writable?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#writable?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 1011



static VALUE
path_writable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_writable_p, 1, get_strpath(self));
}


  








  

    #writable_real?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#writable_real?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 1029



static VALUE
path_writable_real_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_writable_real_p, 1, get_strpath(self));
}


  








  

    #zero?  ⇒ Boolean  (readonly)
  



  

    

See FileTest#zero?.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 1038



static VALUE
path_zero_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, id_zero_p, 1, get_strpath(self));
}


  







Instance Method Details



  

    #+(other)  
    Also known as: #/
  



  

    

Appends a pathname fragment to self to produce a new Pathname object. Since other is considered as a path relative to self, if other is an absolute path, the new Pathname object is created from just other.



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

# / is aliased to +.
p4 = p1 / "bin/ruby"           # Pathname:/usr/bin/ruby
p5 = p1 / "/etc/passwd"        # Pathname:/etc/passwd



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


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 383



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


  








  

    #/(other)  
  



  

    

Alias for #+.


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 387



alias / +


  








  

    #<=>(other)  
  



  

    

Provides a case-sensitive comparison operator for pathnames.



Pathname.new('/usr') <=> Pathname.new('/usr/bin')
    #=> -1
Pathname.new('/usr/bin') <=> Pathname.new('/usr/bin')
    #=> 0
Pathname.new('/usr/bin') <=> Pathname.new('/USR/BIN')
    #=> 1



It will return -1, 0 or 1 depending on the value of the left argument relative to the right argument. Or it will return nil if the arguments are not comparable.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 160



static VALUE
path_cmp(VALUE self, VALUE other)
{
    VALUE s1, s2;
    char *p1, *p2;
    char *e1, *e2;
    if (!rb_obj_is_kind_of(other, rb_cPathname))
        return Qnil;
    s1 = get_strpath(self);
    s2 = get_strpath(other);
    p1 = RSTRING_PTR(s1);
    p2 = RSTRING_PTR(s2);
    e1 = p1 + RSTRING_LEN(s1);
    e2 = p2 + RSTRING_LEN(s2);
    while (p1 < e1 && p2 < e2) {
        int c1, c2;
        c1 = (unsigned char)*p1++;
        c2 = (unsigned char)*p2++;
        if (c1 == '/') c1 = '\0';
        if (c2 == '/') c2 = '\0';
        if (c1 != c2) {
            if (c1 < c2)
                return INT2FIX(-1);
            else
                return INT2FIX(1);
        }
    }
    if (p1 < e1)
        return INT2FIX(1);
    if (p2 < e2)
        return INT2FIX(-1);
    return INT2FIX(0);
}


  








  

    #==(other)  
    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.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 138



static VALUE
path_eq(VALUE self, VALUE other)
{
    if (!rb_obj_is_kind_of(other, rb_cPathname))
        return Qfalse;
    return rb_str_equal(get_strpath(self), get_strpath(other));
}


  








  

    #===(other)  
  



  

    

Alias for #==.


  









  

    #add_trailing_separator(path)   (private)
  

  

    This method is for internal use only.
  



  

    

add_trailing_separator(path) -> path


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 171



def add_trailing_separator(path) # :nodoc:
  if File.basename(path + 'a') == 'a'
    path
  else
    File.join(path, "") # xxx: Is File.join is appropriate to add separator?
  end
end


  








  

    #ascend {|_self| ... } 
  



  

    

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>



Returns an ::Enumerator if no block was given.



enum = Pathname.new("/usr/bin/ruby").ascend
  # ... do stuff ...
enum.each { |e| ... }
  # yields Pathnames /usr/bin/ruby, /usr/bin, /usr, and /.



It doesn’t access the filesystem.


  





  
Yields:


    
  
  • 
    (_self)
  
    • 



Yield Parameters:


    
  
  • 
    _self
    (Pathname)
—    
    

    the object that the method was called on
    

    
  
    • 





  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 357



def ascend
  return to_enum(__method__) unless block_given?
  path = @path
  yield self
  while r = chop_basename(path)
    path, = r
    break if path.empty?
    yield self.class.new(del_trailing_separator(path))
  end
end


  








  

    #atime  ⇒ Time   



  

    

Returns the last access time for the file.



See File.atime.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 476



static VALUE
path_atime(VALUE self)
{
    return rb_funcall(rb_cFile, id_atime, 1, get_strpath(self));
}


  








  

    #basename(*args)  
  



  

    

Returns the last component of the path.



See File.basename.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 755



static VALUE
path_basename(int argc, VALUE *argv, VALUE self)
{
    VALUE str = get_strpath(self);
    VALUE fext;
    if (rb_scan_args(argc, argv, "01", &fext) == 0)
        str = rb_funcall(rb_cFile, id_basename, 1, str);
    else
        str = rb_funcall(rb_cFile, id_basename, 2, str, fext);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}


  








  

    #binread([length [, offset]])  ⇒ String   



  

    

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



See File.binread.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 375



static VALUE
path_binread(int argc, VALUE *argv, VALUE self)
{
    VALUE args[3];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "02", &args[1], &args[2]);
    return rb_funcallv(rb_cFile, id_binread, 1+n, args);
}


  








  

    

      #binwrite(string, [offset])  ⇒ Fixnum 
      #binwrite(string, [offset], open_args)  ⇒ Fixnum 
    

  



  

    

Writes contents to the file, opening it in binary mode.



See File.binwrite.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 417



static VALUE
path_binwrite(int argc, VALUE *argv, VALUE self)
{
    VALUE args[4];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
    return rb_funcallv_kw(rb_cFile, id_binwrite, 1+n, args, RB_PASS_CALLED_KEYWORDS);
}


  








  

    #birthtime  ⇒ Time   



  

    

Returns the birth time for the file. If the platform doesn’t have birthtime, raises ::NotImplementedError.



See File.birthtime.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 491



static VALUE
path_birthtime(VALUE self)
{
    return rb_funcall(rb_cFile, id_birthtime, 1, get_strpath(self));
}


  








  

    #children(with_directory = true)  
  



  

    

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 results never contain the entries . and .. in the directory because they are not children.


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 476



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_int)  ⇒ Integer   



  

    

Changes file permissions.



See File.chmod.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 533



static VALUE
path_chmod(VALUE self, VALUE mode)
{
    return rb_funcall(rb_cFile, id_chmod, 2, mode, get_strpath(self));
}


  








  

    #chop_basename(path)   (private)
  

  

    This method is for internal use only.
  



  

    

chop_basename(path) -> [pre-basename, basename] or nil


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 77



def chop_basename(path) # :nodoc:
  base = File.basename(path)
  if /\A#{SEPARATOR_PAT}?\z/o.match?(base)
    return nil
  else
    return path[0, path.rindex(base)], base
  end
end


  








  

    #chown(owner_int, group_int)  ⇒ Integer   



  

    

Change owner and group of the file.



See File.chown.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 561



static VALUE
path_chown(VALUE self, VALUE owner, VALUE group)
{
    return rb_funcall(rb_cFile, id_chown, 3, owner, group, get_strpath(self));
}


  








  

    #cleanpath(consider_symlink = false)  
  



  

    

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.


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 121



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


  








  

    #cleanpath_aggressive   (private)
  

  

    This method is for internal use only.
  



  

    

Clean the path simply by resolving and removing excess . and .. entries. Nothing more, nothing less.


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 133



def cleanpath_aggressive # :nodoc:
  path = @path
  names = []
  pre = path
  while r = chop_basename(pre)
    pre, base = r
    case base
    when '.'
    when '..'
      names.unshift base
    else
      if names[0] == '..'
        names.shift
      else
        names.unshift base
      end
    end
  end
  pre.tr!(File::ALT_SEPARATOR, File::SEPARATOR) if File::ALT_SEPARATOR
  if /#{SEPARATOR_PAT}/o.match?(File.basename(pre))
    names.shift while names[0] == '..'
  end
  self.class.new(prepend_prefix(pre, File.join(*names)))
end


  








  

    #cleanpath_conservative   (private)
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 192



def cleanpath_conservative # :nodoc:
  path = @path
  names = []
  pre = path
  while r = chop_basename(pre)
    pre, base = r
    names.unshift base if base != '.'
  end
  pre.tr!(File::ALT_SEPARATOR, File::SEPARATOR) if File::ALT_SEPARATOR
  if /#{SEPARATOR_PAT}/o.match?(File.basename(pre))
    names.shift while names[0] == '..'
  end
  if names.empty?
    self.class.new(File.dirname(pre))
  else
    if names.last != '..' && File.basename(path) == '.'
      names << '.'
    end
    result = prepend_prefix(pre, File.join(*names))
    if /\A(?:\.|\.\.)\z/ !~ names.last && has_trailing_separator?(path)
      self.class.new(add_trailing_separator(result))
    else
      self.class.new(result)
    end
  end
end


  








  

    #ctime  ⇒ Time   



  

    

Returns the last change time, using directory information, not the file itself.



See File.ctime.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 505



static VALUE
path_ctime(VALUE self)
{
    return rb_funcall(rb_cFile, id_ctime, 1, get_strpath(self));
}


  








  

    #del_trailing_separator(path)   (private)
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 180



def del_trailing_separator(path) # :nodoc:
  if r = chop_basename(path)
    pre, basename = r
    pre + basename
  elsif /#{SEPARATOR_PAT}+\z/o =~ path
    $` + File.dirname(path)[/#{SEPARATOR_PAT}*\z/o]
  else
    path
  end
end


  








  

    #delete  
    Also known as: #unlink
  



  

    

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


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1282



static VALUE
path_unlink(VALUE self)
{
    VALUE eENOTDIR = rb_const_get_at(rb_mErrno, id_ENOTDIR);
    VALUE str = get_strpath(self);
    return rb_rescue2(unlink_body, str, unlink_rescue, str, eENOTDIR, (VALUE)0);
}


  








  

    #descend  
  



  

    

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>



Returns an ::Enumerator if no block was given.



enum = Pathname.new("/usr/bin/ruby").descend
  # ... do stuff ...
enum.each { |e| ... }
  # yields Pathnames /, /usr, /usr/bin, and /usr/bin/ruby.



It doesn’t access the filesystem.


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 324



def descend
  return to_enum(__method__) unless block_given?
  vs = []
  ascend {|v| vs << v }
  vs.reverse_each {|v| yield v }
  nil
end


  








  

    #dirname  
  



  

    

Returns all but the last component of the path.



See File.dirname.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 772



static VALUE
path_dirname(VALUE self)
{
    VALUE str = get_strpath(self);
    str = rb_funcall(rb_cFile, id_dirname, 1, str);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}


  








  

    #each_child(with_directory = true, &b)  
  



  

    

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>



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



See #children


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 526



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


  








  

    #each_entry  
  



  

    

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


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1256



static VALUE
path_each_entry(VALUE self)
{
    VALUE args[1];
    RETURN_ENUMERATOR(self, 0, 0);

    args[0] = get_strpath(self);
    return rb_block_call(rb_cDir, id_foreach, 1, args, each_entry_i, rb_obj_class(self));
}


  








  

    #each_filename  
  



  

    

Iterates over each component of the path.



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



Returns an ::Enumerator if no block was given.



enum = Pathname.new("/usr/bin/ruby").each_filename
  # ... do stuff ...
enum.each { |e| ... }
  # yields "usr", "bin", and "ruby".


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 292



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


  








  

    

      #each_line {|line| ... } 
      #each_line(sep=$/ [, open_args]) {|line| ... } ⇒ nil 
      #each_line(limit [, open_args]) {|line| ... } ⇒ nil 
      #each_line(sep, limit [, open_args]) {|line| ... } ⇒ nil 
      #each_line(...)  ⇒ Enumerator 
    

  



  

    

Iterates over each line in the file and yields a ::String object for each.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 329



static VALUE
path_each_line(int argc, VALUE *argv, VALUE self)
{
    VALUE args[4];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
    if (rb_block_given_p()) {
        return rb_block_call_kw(rb_cFile, id_foreach, 1+n, args, 0, 0, RB_PASS_CALLED_KEYWORDS);
    }
    else {
        return rb_funcallv_kw(rb_cFile, id_foreach, 1+n, args, RB_PASS_CALLED_KEYWORDS);
    }
}


  








  

    #entries  
  



  

    

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



The results contains just the names in the directory, without any trailing slashes or recursive look-up.



pp Pathname.new('/usr/local').entries
#=> [#<Pathname:share>,
#    #<Pathname:lib>,
#    #<Pathname:..>,
#    #<Pathname:include>,
#    #<Pathname:etc>,
#    #<Pathname:bin>,
#    #<Pathname:man>,
#    #<Pathname:games>,
#    #<Pathname:.>,
#    #<Pathname:sbin>,
#    #<Pathname:src>]



The result may contain the current directory #<Pathname:.> and the parent directory #<Pathname:..>.



If you don’t want . and .. and want directories, consider #children.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1188



static VALUE
path_entries(VALUE self)
{
    VALUE klass, str, ary;
    long i;
    klass = rb_obj_class(self);
    str = get_strpath(self);
    ary = rb_funcall(rb_cDir, id_entries, 1, str);
    ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
    for (i = 0; i < RARRAY_LEN(ary); i++) {
        VALUE elt = RARRAY_AREF(ary, i);
        elt = rb_class_new_instance(1, &elt, klass);
        rb_ary_store(ary, i, elt);
    }
    return ary;
}


  








  

    #eql?(other)  
  



  

    

Alias for #==.


  









  

    #expand_path(*args)  
  



  

    

Returns the absolute path for the file.



See File.expand_path.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 797



static VALUE
path_expand_path(int argc, VALUE *argv, VALUE self)
{
    VALUE str = get_strpath(self);
    VALUE dname;
    if (rb_scan_args(argc, argv, "01", &dname) == 0)
        str = rb_funcall(rb_cFile, id_expand_path, 1, str);
    else
        str = rb_funcall(rb_cFile, id_expand_path, 2, str, dname);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}


  








  

    #extname  
  



  

    

Returns the file’s extension.



See File.extname.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 785



static VALUE
path_extname(VALUE self)
{
    VALUE str = get_strpath(self);
    return rb_funcall(rb_cFile, id_extname, 1, str);
}


  








  

    

      #fnmatch(pattern, [flags])  ⇒ Boolean 
      #fnmatch?(pattern, [flags])  ⇒ Boolean 
    

    Also known as: #fnmatch?
  



  

    

Return true if the receiver matches the given pattern.



See File.fnmatch.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 590



static VALUE
path_fnmatch(int argc, VALUE *argv, VALUE self)
{
    VALUE str = get_strpath(self);
    VALUE pattern, flags;
    if (rb_scan_args(argc, argv, "11", &pattern, &flags) == 1)
        return rb_funcall(rb_cFile, id_fnmatch, 2, pattern, str);
    else
        return rb_funcall(rb_cFile, id_fnmatch, 3, pattern, str, flags);
}


  








  

    

      #fnmatch(pattern, [flags])  ⇒ Boolean 
      #fnmatch?(pattern, [flags])  ⇒ Boolean 
    

  



  

    

Alias for #fnmatch.


  





  








  

    #freeze  ⇒ Object   



  

    

Freezes this Pathname.



See Object#freeze.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 125



static VALUE
path_freeze(VALUE self)
{
    rb_call_super(0, 0);
    rb_str_freeze(get_strpath(self));
    return self;
}


  








  

    #ftype  ⇒ String   



  

    

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



See File.ftype.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 609



static VALUE
path_ftype(VALUE self)
{
    return rb_funcall(rb_cFile, id_ftype, 1, get_strpath(self));
}


  








  

    #glob(*args)  
  



  

    

Returns or yields Pathname objects.



Pathname("ruby-2.4.2").glob("R*.md")
#=> [#<Pathname:ruby-2.4.2/README.md>, #<Pathname:ruby-2.4.2/README.ja.md>]



See Dir.glob. This method uses the base keyword argument of Dir.glob.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1114



static VALUE
path_glob(int argc, VALUE *argv, VALUE self)
{
    VALUE args[3];
    int n;

    n = rb_scan_args(argc, argv, "11", &args[0], &args[1]);
    if (n == 1)
      args[1] = INT2FIX(0);

    args[2] = rb_hash_new();
    rb_hash_aset(args[2], ID2SYM(id_base), get_strpath(self));

    n = 3;

    if (rb_block_given_p()) {
        return rb_block_call_kw(rb_cDir, id_glob, n, args, glob_i, self, RB_PASS_KEYWORDS);
    }
    else {
        VALUE ary;
        long i;
        ary = rb_funcallv_kw(rb_cDir, id_glob, n, args, RB_PASS_KEYWORDS);
        ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
        for (i = 0; i < RARRAY_LEN(ary); i++) {
            VALUE elt = RARRAY_AREF(ary, i);
            elt = rb_funcall(self, '+', 1, elt);
            rb_ary_store(ary, i, elt);
        }
        return ary;
    }
}


  








  

    #has_trailing_separator?(path)  ⇒ Boolean  (private)
  

  

    This method is for internal use only.
  



  

    

has_trailing_separator?(path) -> bool


  





  


  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 160



def has_trailing_separator?(path) # :nodoc:
  if r = chop_basename(path)
    pre, basename = r
    pre.length + basename.length < path.length
  else
    false
  end
end


  








  

    #hash  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'pathname.c', line 199



static VALUE
path_hash(VALUE self)
{
    return ST2FIX(rb_str_hash(get_strpath(self)));
}


  








  

    #inspect  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'pathname.c', line 221



static VALUE
path_inspect(VALUE self)
{
    const char *c = rb_obj_classname(self);
    VALUE str = get_strpath(self);
    return rb_sprintf("#<%s:%"PRIsVALUE">", c, str);
}


  








  

    #join(*args)  
  



  

    

Joins the given pathnames onto self to create a new Pathname object. This is effectively the same as using #+ to append self and all arguments sequentially.



path0 = Pathname.new("/usr")                # Pathname:/usr
path0 = path0.join("bin/ruby")              # Pathname:/usr/bin/ruby
    # is the same as
path1 = Pathname.new("/usr") + "bin/ruby"   # Pathname:/usr/bin/ruby
path0 == path1
    #=> true


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 443



def join(*args)
  return self if args.empty?
  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?
  }
  self + result
end


  








  

    #lchmod(mode_int)  ⇒ Integer   



  

    

Same as #chmod, but does not follow symbolic links.



See File.lchmod.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 547



static VALUE
path_lchmod(VALUE self, VALUE mode)
{
    return rb_funcall(rb_cFile, id_lchmod, 2, mode, get_strpath(self));
}


  








  

    #lchown(owner_int, group_int)  ⇒ Integer   



  

    

Same as #chown, but does not follow symbolic links.



See File.lchown.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 575



static VALUE
path_lchown(VALUE self, VALUE owner, VALUE group)
{
    return rb_funcall(rb_cFile, id_lchown, 3, owner, group, get_strpath(self));
}


  








  

    #lstat  
  



  

    

See File.lstat.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 695



static VALUE
path_lstat(VALUE self)
{
    return rb_funcall(rb_cFile, id_lstat, 1, get_strpath(self));
}


  








  

    #lutime(atime, mtime)  
  



  

    

Update the access and modification times of the file.



Same as #utime, but does not follow symbolic links.



See File.lutime.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 744



static VALUE
path_lutime(VALUE self, VALUE atime, VALUE mtime)
{
    return rb_funcall(rb_cFile, id_lutime, 3, atime, mtime, get_strpath(self));
}


  












  

    #mkdir(*args)  
  



  

    

Create the referenced directory.



See Dir.mkdir.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1210



static VALUE
path_mkdir(int argc, VALUE *argv, VALUE self)
{
    VALUE str = get_strpath(self);
    VALUE vmode;
    if (rb_scan_args(argc, argv, "01", &vmode) == 0)
        return rb_funcall(rb_cDir, id_mkdir, 1, str);
    else
        return rb_funcall(rb_cDir, id_mkdir, 2, str, vmode);
}


  








  

    #mkpath(mode: nil)  
  



  

    

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



See FileUtils.mkpath and FileUtils.mkdir_p


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 52



def mkpath(mode: nil)
  path = @path == '/' ? @path : @path.chomp('/')

  stack = []
  until File.directory?(path) || File.dirname(path) == path
    stack.push path
    path = File.dirname(path)
  end

  stack.reverse_each do |dir|
    dir = dir == '/' ? dir : dir.chomp('/')
    if mode
      Dir.mkdir dir, mode
      File.chmod mode, dir
    else
      Dir.mkdir dir
    end
  rescue SystemCallError
    raise unless File.directory?(dir)
  end

  self
end


  








  

    #mtime  ⇒ Time   



  

    

Returns the last modified time of the file.



See File.mtime.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 519



static VALUE
path_mtime(VALUE self)
{
    return rb_funcall(rb_cFile, id_mtime, 1, get_strpath(self));
}


  








  

    

      #open  
      #open(mode="r" [, opt])  ⇒ File 
      #open([mode [, perm]] [, opt])  ⇒ File 
      #open(mode="r" [, opt]) {|file| ... } ⇒ Object 
      #open([mode [, perm]] [, opt]) {|file| ... } ⇒ Object 
    

  



  

    

Opens the file for reading or writing.



See File.open.


  





  


  [ GitHub ]


  

  


# File 'pathname.c', line 641



static VALUE
path_open(int argc, VALUE *argv, VALUE self)
{
    VALUE args[4];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
    if (rb_block_given_p()) {
        return rb_block_call_kw(rb_cFile, id_open, 1+n, args, 0, 0, RB_PASS_CALLED_KEYWORDS);
    }
    else {
        return rb_funcallv_kw(rb_cFile, id_open, 1+n, args, RB_PASS_CALLED_KEYWORDS);
    }
}


  








  

    #opendir  
  



  

    

Opens the referenced directory.



See Dir.open.


  



  [ GitHub ]


  

  


# File 'pathname.c', line 1237



static VALUE
path_opendir(VALUE self)
{
    VALUE args[1];

    args[0] = get_strpath(self);
    return rb_block_call(rb_cDir, id_open, 1, args, 0, 0);
}


  








  

    #parent  
  



  

    

Returns the parent directory.



This is same as self + '..'.


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 223



def parent
  self + '..'
end


  








  

    #plus(path1, path2)   (private)
  

  

    This method is for internal use only.
  



  

    

-> path # :nodoc:


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 389



def plus(path1, path2) # -> path # :nodoc:
  prefix2 = path2
  index_list2 = []
  basename_list2 = []
  while r2 = chop_basename(prefix2)
    prefix2, basename2 = r2
    index_list2.unshift prefix2.length
    basename_list2.unshift basename2
  end
  return path2 if prefix2 != ''
  prefix1 = path1
  while true
    while !basename_list2.empty? && basename_list2.first == '.'
      index_list2.shift
      basename_list2.shift
    end
    break unless r1 = chop_basename(prefix1)
    prefix1, basename1 = r1
    next if basename1 == '.'
    if basename1 == '..' || basename_list2.empty? || basename_list2.first != '..'
      prefix1 = prefix1 + basename1
      break
    end
    index_list2.shift
    basename_list2.shift
  end
  r1 = chop_basename(prefix1)
  if !r1 && (r1 = /#{SEPARATOR_PAT}/o.match?(File.basename(prefix1)))
    while !basename_list2.empty? && basename_list2.first == '..'
      index_list2.shift
      basename_list2.shift
    end
  end
  if !basename_list2.empty?
    suffix2 = path2[index_list2.first..-1]
    r1 ? File.join(prefix1, suffix2) : prefix1 + suffix2
  else
    r1 ? prefix1 : File.dirname(prefix1)
  end
end


  








  

    #prepend_prefix(prefix, relpath)   (private)
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 98



def prepend_prefix(prefix, relpath) # :nodoc:
  if relpath.empty?
    File.dirname(prefix)
  elsif /#{SEPARATOR_PAT}/o.match?(prefix)
    prefix = File.dirname(prefix)
    prefix = File.join(prefix, "") if File.basename(prefix + 'a') != 'a'
    prefix + relpath
  else
    prefix + relpath
  end
end


  








  

    

      #read([length [, offset]])  ⇒ String 
      #read([length [, offset]], open_args)  ⇒ String 
    

  



  

    

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



See File.read.


  





  


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# File 'pathname.c', line 355



static VALUE
path_read(int argc, VALUE *argv, VALUE self)
{
    VALUE args[4];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
    return rb_funcallv_kw(rb_cFile, id_read, 1+n, args, RB_PASS_CALLED_KEYWORDS);
}


  








  

    

      #readlines(sep=$/ [, open_args])  ⇒ Array 
      #readlines(limit [, open_args])  ⇒ Array 
      #readlines(sep, limit [, open_args])  ⇒ Array 
    

  



  

    

Returns all the lines from the file.



See File.readlines.


  





  


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# File 'pathname.c', line 439



static VALUE
path_readlines(int argc, VALUE *argv, VALUE self)
{
    VALUE args[4];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
    return rb_funcallv_kw(rb_cFile, id_readlines, 1+n, args, RB_PASS_CALLED_KEYWORDS);
}


  










  

    #realdirpath(*args)  
  



  

    

Returns the real (absolute) pathname of self in the actual filesystem.



Does not contain symlinks or useless dots, .. and ..



The last component of the real pathname can be nonexistent.


  



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# File 'pathname.c', line 310



static VALUE
path_realdirpath(int argc, VALUE *argv, VALUE self)
{
    VALUE basedir, str;
    rb_scan_args(argc, argv, "01", &basedir);
    str = rb_funcall(rb_cFile, id_realdirpath, 2, get_strpath(self), basedir);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}


  








  

    #realpath(*args)  
  



  

    

Returns the real (absolute) pathname for self in the actual filesystem.



Does not contain symlinks or useless dots, .. and ..



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


  



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# File 'pathname.c', line 294



static VALUE
path_realpath(int argc, VALUE *argv, VALUE self)
{
    VALUE basedir, str;
    rb_scan_args(argc, argv, "01", &basedir);
    str = rb_funcall(rb_cFile, id_realpath, 2, get_strpath(self), basedir);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}


  








  

    #relative_path_from(base_directory)  
  



  

    

Returns a relative path from the given base_directory to the receiver.



If self is absolute, then base_directory must be absolute too.



If self is relative, then base_directory must be relative too.



This method doesn’t access the filesystem.  It assumes no symlinks.



::ArgumentError is raised when it cannot find a relative path.



Note that this method does not handle situations where the case sensitivity of the filesystem in use differs from the operating system default.


  



  [ GitHub ]


  

  


# File 'pathname_builtin.rb', line 544



def relative_path_from(base_directory)
  base_directory = Pathname.new(base_directory) unless base_directory.is_a? Pathname
  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)  
  



  

    

Rename the file.



See File.rename.


  



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# File 'pathname.c', line 675



static VALUE
path_rename(VALUE self, VALUE to)
{
    return rb_funcall(rb_cFile, id_rename, 2, get_strpath(self), to);
}


  








  

    #rmdir  
  



  

    

Remove the referenced directory.



See Dir.rmdir.


  



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# File 'pathname.c', line 1226



static VALUE
path_rmdir(VALUE self)
{
    return rb_funcall(rb_cDir, id_rmdir, 1, get_strpath(self));
}


  








  

    #split  
  



  

    

Returns the #dirname and the #basename in an ::Array.



See File.split.


  



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# File 'pathname.c', line 814



static VALUE
path_split(VALUE self)
{
    VALUE str = get_strpath(self);
    VALUE ary, dirname, basename;
    ary = rb_funcall(rb_cFile, id_split, 1, str);
    Check_Type(ary, T_ARRAY);
    dirname = rb_ary_entry(ary, 0);
    basename = rb_ary_entry(ary, 1);
    dirname = rb_class_new_instance(1, &dirname, rb_obj_class(self));
    basename = rb_class_new_instance(1, &basename, rb_obj_class(self));
    return rb_ary_new3(2, dirname, basename);
}


  








  

    #split_names(path)   (private)
  

  

    This method is for internal use only.
  



  

    

split_names(path) -> prefix, [name, …]


  



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# File 'pathname_builtin.rb', line 88



def split_names(path) # :nodoc:
  names = []
  while r = chop_basename(path)
    path, basename = r
    names.unshift basename
  end
  return path, names
end


  








  

    #stat  
  



  

    

Returns a ::File::Stat object.



See File.stat.


  



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# File 'pathname.c', line 686



static VALUE
path_stat(VALUE self)
{
    return rb_funcall(rb_cFile, id_stat, 1, get_strpath(self));
}


  








  

    #sub(*args)  
  



  

    

Return a pathname which is substituted by String#sub.



path1 = Pathname.new('/usr/bin/perl')
path1.sub('perl', 'ruby')
    #=> #<Pathname:/usr/bin/ruby>


  



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# File 'pathname.c', line 236



static VALUE
path_sub(int argc, VALUE *argv, VALUE self)
{
    VALUE str = get_strpath(self);

    if (rb_block_given_p()) {
        str = rb_block_call(str, id_sub, argc, argv, 0, 0);
    }
    else {
        str = rb_funcallv(str, id_sub, argc, argv);
    }
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}


  








  

    #sub_ext(repl)  
  



  

    

Return a pathname with repl added as a suffix to the basename.



If self has no extension part, repl is appended.



Pathname.new('/usr/bin/shutdown').sub_ext('.rb')
    #=> #<Pathname:/usr/bin/shutdown.rb>


  



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# File 'pathname.c', line 258



static VALUE
path_sub_ext(VALUE self, VALUE repl)
{
    VALUE str = get_strpath(self);
    VALUE str2;
    long extlen;
    const char *ext;
    const char *p;

    StringValue(repl);
    p = RSTRING_PTR(str);
    extlen = RSTRING_LEN(str);
    ext = ruby_enc_find_extname(p, &extlen, rb_enc_get(str));
    if (ext == NULL) {
        ext = p + RSTRING_LEN(str);
    }
    else if (extlen <= 1) {
        ext += extlen;
    }
    str2 = rb_str_subseq(str, 0, ext-p);
    rb_str_append(str2, repl);
    return rb_class_new_instance(1, &str2, rb_obj_class(self));
}


  








  

    #sysopen([mode, [perm]])  ⇒ Fixnum   



  

    

See IO.sysopen.


  



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# File 'pathname.c', line 457



static VALUE
path_sysopen(int argc, VALUE *argv, VALUE self)
{
    VALUE args[3];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "02", &args[1], &args[2]);
    return rb_funcallv(rb_cIO, id_sysopen, 1+n, args);
}


  








  

    

      #to_s  ⇒ String 
      #to_path  ⇒ String 
    

  



  

    

Alias for #to_s.


  





  








  

    

      #to_s  ⇒ String 
      #to_path  ⇒ String 
    

    Also known as: #to_path
  



  

    

Return the path as a ::String.



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


  





  


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# File 'pathname.c', line 214



static VALUE
path_to_s(VALUE self)
{
    return rb_obj_dup(get_strpath(self));
}


  








  

    #truncate(length)  
  



  

    

Truncates the file to length bytes.



See File.truncate.


  



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# File 'pathname.c', line 720



static VALUE
path_truncate(VALUE self, VALUE length)
{
    return rb_funcall(rb_cFile, id_truncate, 2, get_strpath(self), length);
}


  










  

    #utime(atime, mtime)  
  



  

    

Update the access and modification times of the file.



See File.utime.


  



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# File 'pathname.c', line 731



static VALUE
path_utime(VALUE self, VALUE atime, VALUE mtime)
{
    return rb_funcall(rb_cFile, id_utime, 3, atime, mtime, get_strpath(self));
}


  








  

    

      #write(string, [offset])  ⇒ Fixnum 
      #write(string, [offset], open_args)  ⇒ Fixnum 
    

  



  

    

Writes contents to the file.



See File.write.


  





  


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# File 'pathname.c', line 396



static VALUE
path_write(int argc, VALUE *argv, VALUE self)
{
    VALUE args[4];
    int n;

    args[0] = get_strpath(self);
    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
    return rb_funcallv_kw(rb_cFile, id_write, 1+n, args, RB_PASS_CALLED_KEYWORDS);
}