Pathname represents the name of a file or directory on the filesystem, but not the file itself.

The pathname depends on the Operating System: Unix, Windows, etc. This library works with pathnames of local OS, however non-Unix pathnames are supported experimentally.

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 goal 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. None of these access the file system except for mountpoint?, children, each_child, realdirpath and realpath.

File status predicate methods

These methods are a facade for FileTest:

File property and manipulation methods

These methods are a facade for File:

Directory methods

These methods are a facade for Dir:

IO

These methods are a facade for IO:

Utilities

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

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.

Methods
#
A
B
C
D
E
F
G
J
L
M
N
O
P
R
S
T
U
W
Z
Class Public methods
getwd()

Returns the current working directory as a Pathname.

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

See Dir.getwd.

Source: show 

static VALUE
path_s_getwd(VALUE klass)
{
    VALUE str;
    str = rb_funcall(rb_cDir, rb_intern("getwd"), 0);
    return rb_class_new_instance(1, &str, klass);
}
glob(p1, p2 = v2)

Returns or yields Pathname objects.

Pathname.glob("config/" "*.rb")
    #=> [#<Pathname:config/environment.rb>, #<Pathname:config/routes.rb>, ..]

See Dir.glob.

Source: show 

static VALUE
path_s_glob(int argc, VALUE *argv, VALUE klass)
{
    VALUE args[2];
    int n;

    n = rb_scan_args(argc, argv, "11", &args[0], &args[1]);
    if (rb_block_given_p()) {
        return rb_block_call(rb_cDir, rb_intern("glob"), n, args, glob_i, klass);
    }
    else {
        VALUE ary;
        long i;
        ary = rb_funcall2(rb_cDir, rb_intern("glob"), n, args);
        ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
        for (i = 0; i < RARRAY_LEN(ary); i++) {
            VALUE elt = RARRAY_PTR(ary)[i];
            elt = rb_class_new_instance(1, &elt, klass);
            rb_ary_store(ary, i, elt);
        }
        return ary;
    }
}
new(p1)

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

Source: show 

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);
    OBJ_INFECT(self, str);
    return self;
}
pwd()

Returns the current working directory as a Pathname.

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

See Dir.getwd.

Source: show 

static VALUE
path_s_getwd(VALUE klass)
{
    VALUE str;
    str = rb_funcall(rb_cDir, rb_intern("getwd"), 0);
    return rb_class_new_instance(1, &str, klass);
}
Instance Public methods
+(other)

Appends a pathname fragment to self 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.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 329
def +(other)
  other = Pathname.new(other) unless Pathname === other
  Pathname.new(plus(@path, other.to_s))
end
<=>(p1)

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.

Source: show 

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);
}
==(p1)

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.

Source: show 

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));
}
===(p1)

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.

Source: show 

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));
}
absolute?()

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

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 224
def absolute?
  !relative?
end
ascend()

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 the filesystem.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 310
def ascend
  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
pathname.atime → time

Returns the last access time for the file.

See File.atime.

Source: show 

static VALUE
path_atime(VALUE self)
{
    return rb_funcall(rb_cFile, rb_intern("atime"), 1, get_strpath(self));
}
basename(p1 = v1)

Returns the last component of the path.

See File.basename.

Source: show 

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, rb_intern("basename"), 1, str);
    else
        str = rb_funcall(rb_cFile, rb_intern("basename"), 2, str, fext);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}
pathname.binread([length [, offset]]) → string

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

See IO.binread.

Source: show 

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_funcall2(rb_cIO, rb_intern("binread"), 1+n, args);
}
blockdev?()

See FileTest#blockdev?.

Source: show 

static VALUE
path_blockdev_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("blockdev?"), 1, get_strpath(self));
}
chardev?()

See FileTest#chardev?.

Source: show 

static VALUE
path_chardev_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("chardev?"), 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.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 419
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
pathname.chmod → integer

Changes file permissions.

See File.chmod.

Source: show 

static VALUE
path_chmod(VALUE self, VALUE mode)
{
    return rb_funcall(rb_cFile, rb_intern("chmod"), 2, mode, get_strpath(self));
}
pathname.chown → integer

Change owner and group of the file.

See File.chown.

Source: show 

static VALUE
path_chown(VALUE self, VALUE owner, VALUE group)
{
    return rb_funcall(rb_cFile, rb_intern("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.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 86
def cleanpath(consider_symlink=false)
  if consider_symlink
    cleanpath_conservative
  else
    cleanpath_aggressive
  end
end
pathname.ctime → time

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

See File.ctime.

Source: show 

static VALUE
path_ctime(VALUE self)
{
    return rb_funcall(rb_cFile, rb_intern("ctime"), 1, get_strpath(self));
}
delete()

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

Source: show 

static VALUE
path_unlink(VALUE self)
{
    VALUE eENOTDIR = rb_const_get_at(rb_mErrno, rb_intern("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>

It doesn't access the filesystem.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 285
def descend
  vs = []
  ascend {|v| vs << v }
  vs.reverse_each {|v| yield v }
  nil
end
directory?()

See FileTest#directory?.

Source: show 

static VALUE
path_directory_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("directory?"), 1, get_strpath(self));
}
dirname()

Returns all but the last component of the path.

See File.dirname.

Source: show 

static VALUE
path_dirname(VALUE self)
{
    VALUE str = get_strpath(self);
    str = rb_funcall(rb_cFile, rb_intern("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

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 469
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.

Source: show 

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

    args[0] = get_strpath(self);
    return rb_block_call(rb_cDir, rb_intern("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".

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 260
def each_filename # :yield: filename
  return to_enum(__method__) unless block_given?
  _, names = split_names(@path)
  names.each {|filename| yield filename }
  nil
end
pathname.each_line {|line| ... } pathname.each_line(sep=$/ [, open_args]) {|line| block } → nil pathname.each_line(limit [, open_args]) {|line| block } → nil pathname.each_line(sep, limit [, open_args]) {|line| block } → nil pathname.each_line(...) → an_enumerator

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

Source: show 

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(rb_cIO, rb_intern("foreach"), 1+n, args, 0, 0);
    }
    else {
        return rb_funcall2(rb_cIO, rb_intern("foreach"), 1+n, args);
    }
}
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.

Source: show 

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, rb_intern("entries"), 1, str);
    ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
    for (i = 0; i < RARRAY_LEN(ary); i++) {
        VALUE elt = RARRAY_PTR(ary)[i];
        elt = rb_class_new_instance(1, &elt, klass);
        rb_ary_store(ary, i, elt);
    }
    return ary;
}
eql?(p1)

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.

Source: show 

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));
}
executable?()

See FileTest#executable?.

Source: show 

static VALUE
path_executable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("executable?"), 1, get_strpath(self));
}
executable_real?()

See FileTest#executable_real?.

Source: show 

static VALUE
path_executable_real_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("executable_real?"), 1, get_strpath(self));
}
exist?()

See FileTest#exist?.

Source: show 

static VALUE
path_exist_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("exist?"), 1, get_strpath(self));
}
expand_path(p1 = v1)

Returns the absolute path for the file.

See File.expand_path.

Source: show 

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, rb_intern("expand_path"), 1, str);
    else
        str = rb_funcall(rb_cFile, rb_intern("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.

Source: show 

static VALUE
path_extname(VALUE self)
{
    VALUE str = get_strpath(self);
    return rb_funcall(rb_cFile, rb_intern("extname"), 1, str);
}
file?()

See FileTest#file?.

Source: show 

static VALUE
path_file_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("file?"), 1, get_strpath(self));
}
find()

Iterates over the directory tree in a depth first manner, yielding a Pathname for each file under “this” directory.

Returns an Enumerator if no block is given.

Since it is implemented by the standard library module Find, Find.prune can be used to control the traversal.

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

See Find.find

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 537
def find # :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
pathname.fnmatch(pattern, [flags]) → string pathname.fnmatch?(pattern, [flags]) → string

Return true if the receiver matches the given pattern.

See File.fnmatch.

Source: show 

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, rb_intern("fnmatch"), 2, pattern, str);
    else
        return rb_funcall(rb_cFile, rb_intern("fnmatch"), 3, pattern, str, flags);
}
pathname.fnmatch?(pattern, [flags]) → string

Return true if the receiver matches the given pattern.

See File.fnmatch.

Source: show 

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, rb_intern("fnmatch"), 2, pattern, str);
    else
        return rb_funcall(rb_cFile, rb_intern("fnmatch"), 3, pattern, str, flags);
}
pathname.freeze → obj

Freezes this Pathname.

See Object#freeze.

Source: show 

static VALUE
path_freeze(VALUE self)
{
    rb_call_super(0, 0);
    rb_str_freeze(get_strpath(self));
    return self;
}
pathname.ftype → string

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

See File.ftype.

Source: show 

static VALUE
path_ftype(VALUE self)
{
    return rb_funcall(rb_cFile, rb_intern("ftype"), 1, get_strpath(self));
}
grpowned?()

See FileTest#grpowned?.

Source: show 

static VALUE
path_grpowned_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("grpowned?"), 1, get_strpath(self));
}
join(*args)

Joins the given pathnames onto self to create a new Pathname object.

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

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 386
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
pathname.lchmod → integer

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

See File.lchmod.

Source: show 

static VALUE
path_lchmod(VALUE self, VALUE mode)
{
    return rb_funcall(rb_cFile, rb_intern("lchmod"), 2, mode, get_strpath(self));
}
pathname.lchown → integer

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

See File.lchown.

Source: show 

static VALUE
path_lchown(VALUE self, VALUE owner, VALUE group)
{
    return rb_funcall(rb_cFile, rb_intern("lchown"), 3, owner, group, get_strpath(self));
}
lstat()

See File.lstat.

Source: show 

static VALUE
path_lstat(VALUE self)
{
    return rb_funcall(rb_cFile, rb_intern("lstat"), 1, get_strpath(self));
}

Creates a hard link at pathname.

See File.link.

Source: show

Creates a symbolic link.

See File.symlink.

Source: show

mkdir(p1 = v1)

Create the referenced directory.

See Dir.mkdir.

Source: show 

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, rb_intern("mkdir"), 1, str);
    else
        return rb_funcall(rb_cDir, rb_intern("mkdir"), 2, str, vmode);
}
mkpath()

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

See FileUtils.mkpath and FileUtils.mkdir_p

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 554
def mkpath
  require 'fileutils'
  FileUtils.mkpath(@path)
  nil
end
mountpoint?()

Returns true if self points to a mountpoint.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 191
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
pathname.mtime → time

Returns the last modified time of the file.

See File.mtime.

Source: show 

static VALUE
path_mtime(VALUE self)
{
    return rb_funcall(rb_cFile, rb_intern("mtime"), 1, get_strpath(self));
}
open(p1 = v1, p2 = v2, p3 = v3)

Opens the file for reading or writing.

See File.open.

Source: show 

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(rb_cFile, rb_intern("open"), 1+n, args, 0, 0);
    }
    else {
        return rb_funcall2(rb_cFile, rb_intern("open"), 1+n, args);
    }
}
opendir()

Opens the referenced directory.

See Dir.open.

Source: show 

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

    args[0] = get_strpath(self);
    return rb_block_call(rb_cDir, rb_intern("open"), 1, args, 0, 0);
}
owned?()

See FileTest#owned?.

Source: show 

static VALUE
path_owned_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("owned?"), 1, get_strpath(self));
}
parent()

Returns the parent directory.

This is same as self + '..'.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 186
def parent
  self + '..'
end
pipe?()

See FileTest#pipe?.

Source: show 

static VALUE
path_pipe_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("pipe?"), 1, get_strpath(self));
}
pathname.read([length [, offset]]) → string pathname.read([length [, offset]], open_args) → string

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

See IO.read.

Source: show 

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_funcall2(rb_cIO, rb_intern("read"), 1+n, args);
}
readable?()

See FileTest#readable?.

Source: show 

static VALUE
path_readable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("readable?"), 1, get_strpath(self));
}
readable_real?()

See FileTest#readable_real?.

Source: show 

static VALUE
path_readable_real_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("readable_real?"), 1, get_strpath(self));
}
pathname.readlines(sep=$/ [, open_args]) → array pathname.readlines(limit [, open_args]) → array pathname.readlines(sep, limit [, open_args]) → array

Returns all the lines from the file.

See IO.readlines.

Source: show 

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_funcall2(rb_cIO, rb_intern("readlines"), 1+n, args);
}

Read symbolic link.

See File.readlink.

Source: show

realdirpath(p1 = v1)

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.

Source: show 

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, rb_intern("realdirpath"), 2, get_strpath(self), basedir);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}
realpath(p1 = v1)

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.

Source: show 

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, rb_intern("realpath"), 2, get_strpath(self), basedir);
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}
relative?()

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

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 239
def relative?
  path = @path
  while r = chop_basename(path)
    path, = r
  end
  path == ''
end
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.

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 484
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(p1)

Rename the file.

See File.rename.

Source: show 

static VALUE
path_rename(VALUE self, VALUE to)
{
    return rb_funcall(rb_cFile, rb_intern("rename"), 2, get_strpath(self), to);
}
rmdir()

Remove the referenced directory.

See Dir.rmdir.

Source: show 

static VALUE
path_rmdir(VALUE self)
{
    return rb_funcall(rb_cDir, rb_intern("rmdir"), 1, get_strpath(self));
}
rmtree()

Recursively deletes a directory, including all directories beneath it.

See FileUtils.rm_r

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 563
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?()

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/...

Source: show | on GitHub 

# File ext/pathname/lib/pathname.rb, line 209
def root?
  !!(chop_basename(@path) == nil && /#{SEPARATOR_PAT}/o =~ @path)
end
setgid?()

See FileTest#setgid?.

Source: show 

static VALUE
path_setgid_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("setgid?"), 1, get_strpath(self));
}
setuid?()

See FileTest#setuid?.

Source: show 

static VALUE
path_setuid_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("setuid?"), 1, get_strpath(self));
}
size()

See FileTest#size.

Source: show 

static VALUE
path_size(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("size"), 1, get_strpath(self));
}
size?()

See FileTest#size?.

Source: show 

static VALUE
path_size_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("size?"), 1, get_strpath(self));
}
socket?()

See FileTest#socket?.

Source: show 

static VALUE
path_socket_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("socket?"), 1, get_strpath(self));
}
split()

Returns the dirname and the basename in an Array.

See File.split.

Source: show 

static VALUE
path_split(VALUE self)
{
    VALUE str = get_strpath(self);
    VALUE ary, dirname, basename;
    ary = rb_funcall(rb_cFile, rb_intern("split"), 1, str);
    ary = rb_check_array_type(ary);
    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);
}
stat()

Returns a File::Stat object.

See File.stat.

Source: show 

static VALUE
path_stat(VALUE self)
{
    return rb_funcall(rb_cFile, rb_intern("stat"), 1, get_strpath(self));
}
sticky?()

See FileTest#sticky?.

Source: show 

static VALUE
path_sticky_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("sticky?"), 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>

Source: show 

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, rb_intern("sub"), argc, argv, 0, 0);
    }
    else {
        str = rb_funcall2(str, rb_intern("sub"), argc, argv);
    }
    return rb_class_new_instance(1, &str, rb_obj_class(self));
}
sub_ext(p1)

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>

Source: show 

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);
    OBJ_INFECT(str2, str);
    return rb_class_new_instance(1, &str2, rb_obj_class(self));
}

See FileTest#symlink?.

Source: show

pathname.sysopen([mode, [perm]]) → fixnum

See IO.sysopen.

Source: show 

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_funcall2(rb_cIO, rb_intern("sysopen"), 1+n, args);
}
pathname.taint → obj

Taints this Pathname.

See Object#taint.

Source: show 

static VALUE
path_taint(VALUE self)
{
    rb_call_super(0, 0);
    rb_obj_taint(get_strpath(self));
    return self;
}
pathname.to_path → string

Return the path as a String.

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

Source: show 

static VALUE
path_to_s(VALUE self)
{
    return rb_obj_dup(get_strpath(self));
}
pathname.to_s → string

Return the path as a String.

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

Source: show 

static VALUE
path_to_s(VALUE self)
{
    return rb_obj_dup(get_strpath(self));
}
truncate(p1)

Truncates the file to length bytes.

See File.truncate.

Source: show 

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

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

Source: show

pathname.untaint → obj

Untaints this Pathname.

See Object#untaint.

Source: show 

static VALUE
path_untaint(VALUE self)
{
    rb_call_super(0, 0);
    rb_obj_untaint(get_strpath(self));
    return self;
}
utime(p1, p2)

Update the access and modification times of the file.

See File.utime.

Source: show 

static VALUE
path_utime(VALUE self, VALUE atime, VALUE mtime)
{
    return rb_funcall(rb_cFile, rb_intern("utime"), 3, atime, mtime, get_strpath(self));
}
world_readable?()

See FileTest#world_readable?.

Source: show 

static VALUE
path_world_readable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("world_readable?"), 1, get_strpath(self));
}
world_writable?()

See FileTest#world_writable?.

Source: show 

static VALUE
path_world_writable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("world_writable?"), 1, get_strpath(self));
}
writable?()

See FileTest#writable?.

Source: show 

static VALUE
path_writable_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("writable?"), 1, get_strpath(self));
}
writable_real?()

See FileTest#writable_real?.

Source: show 

static VALUE
path_writable_real_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("writable_real?"), 1, get_strpath(self));
}
zero?()

See FileTest#zero?.

Source: show 

static VALUE
path_zero_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("zero?"), 1, get_strpath(self));
}