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  • pathname/lib/pathname.rb
  • pathname/pathname.c

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Pathname

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.

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.

Public Class Methods

getwd() click to toggle source

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

 
               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) click to toggle source

See Dir.glob. Returns or yields Pathname objects.

 
               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) click to toggle source

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

 
               static VALUE
path_initialize(VALUE self, VALUE arg)
{
    VALUE str;
    if (TYPE(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() click to toggle source

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

 
               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);
}
            

Public Instance Methods

+(other) click to toggle source

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.

 
               # File pathname/lib/pathname.rb, line 307
def +(other)
  other = Pathname.new(other) unless Pathname === other
  Pathname.new(plus(@path, other.to_s))
end
            
<=>(p1) click to toggle source

Provides for comparing pathnames, case-sensitively.

 
               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) click to toggle source

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.

 
               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) click to toggle source

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.

 
               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?() click to toggle source

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

 
               # File pathname/lib/pathname.rb, line 214
def absolute?
  !relative?
end
            
ascend() click to toggle source

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.

 
               # File pathname/lib/pathname.rb, line 287
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
            
atime() click to toggle source

See File.atime. Returns last access time.

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

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

 
               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));
}
            
binread([length [, offset]]) → string click to toggle source

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

 
               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?() click to toggle source

See FileTest.blockdev?.

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

See FileTest.chardev?.

 
               static VALUE
path_chardev_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("chardev?"), 1, get_strpath(self));
}
            
children(with_directory=true) click to toggle source

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.

This method has existed since 1.8.1.

 
               # File pathname/lib/pathname.rb, line 394
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(p1) click to toggle source

See File.chmod. Changes permissions.

 
               static VALUE
path_chmod(VALUE self, VALUE mode)
{
    return rb_funcall(rb_cFile, rb_intern("chmod"), 2, mode, get_strpath(self));
}
            
chown(p1, p2) click to toggle source

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

 
               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) click to toggle source

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.

 
               # File pathname/lib/pathname.rb, line 85
def cleanpath(consider_symlink=false)
  if consider_symlink
    cleanpath_conservative
  else
    cleanpath_aggressive
  end
end
            
ctime() click to toggle source

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

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

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

 
               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() click to toggle source

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.

 
               # File pathname/lib/pathname.rb, line 260
def descend
  vs = []
  ascend {|v| vs << v }
  vs.reverse_each {|v| yield v }
  nil
end
            
directory?() click to toggle source

See FileTest.directory?.

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

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

 
               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) click to toggle source

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>
 
               # File pathname/lib/pathname.rb, line 434
def each_child(with_directory=true, &b)
  children(with_directory).each(&b)
end
            
each_entry() click to toggle source

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

This method has available since 1.8.1.

 
               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() click to toggle source

Iterates over each component of the path.

Pathname.new("/usr/bin/ruby").each_filename {|filename| ... }
  # yields "usr", "bin", and "ruby".
 
               # File pathname/lib/pathname.rb, line 233
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| ... } click to toggle source
each_line(sep=$/ [, open_args]) {|line| block } → nil
each_line(limit [, open_args]) {|line| block } → nil
each_line(sep, limit [, open_args]) {|line| block } → nil
each_line(...) → an_enumerator

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

This method is availabel since 1.8.1.

 
               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() click to toggle source

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

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

 
               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) click to toggle source

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.

 
               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?() click to toggle source

See FileTest.executable?.

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

See FileTest.executable_real?.

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

See FileTest.exist?.

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

See File.expand_path.

 
               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() click to toggle source

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

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

See FileTest.file?.

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

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

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

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

 
               # File pathname/lib/pathname.rb, line 498
def find(&block) # :yield: pathname
  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, [flags]) → string click to toggle source
fnmatch?(pattern, [flags]) → string

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

 
               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);
}
            
fnmatch?(pattern, [flags]) → string click to toggle source

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

 
               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);
}
            
freeze() click to toggle source
 
               static VALUE
path_freeze(VALUE self)
{
    rb_call_super(0, 0);
    rb_str_freeze(get_strpath(self));
    return self;
}
            
ftype() click to toggle source

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

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

See FileTest.grpowned?.

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

#join joins pathnames.

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

 
               # File pathname/lib/pathname.rb, line 360
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(p1) click to toggle source

See File.lchmod.

 
               static VALUE
path_lchmod(VALUE self, VALUE mode)
{
    return rb_funcall(rb_cFile, rb_intern("lchmod"), 2, mode, get_strpath(self));
}
            
lchown(p1, p2) click to toggle source

See File.lchown.

 
               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() click to toggle source

See File.lstat.

 
               static VALUE
path_lstat(VALUE self)
{
    return rb_funcall(rb_cFile, rb_intern("lstat"), 1, get_strpath(self));
}
            
mkdir(p1 = v1) click to toggle source

See Dir.mkdir. Create the referenced directory.

 
               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() click to toggle source

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

 
               # File pathname/lib/pathname.rb, line 512
def mkpath
  require 'fileutils'
  FileUtils.mkpath(@path)
  nil
end
            
mountpoint?() click to toggle source

mountpoint? returns true if self points to a mountpoint.

 
               # File pathname/lib/pathname.rb, line 190
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
            
mtime() click to toggle source

See File.mtime. Returns last modification time.

 
               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) click to toggle source

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

 
               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() click to toggle source

See Dir.open.

 
               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?() click to toggle source

See FileTest.owned?.

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

parent returns the parent directory.

This is same as self + '..'.

 
               # File pathname/lib/pathname.rb, line 185
def parent
  self + '..'
end
            
pipe?() click to toggle source

See FileTest.pipe?.

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

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

 
               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?() click to toggle source

See FileTest.readable?.

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

See FileTest.readable_real?.

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

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

 
               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);
}
            
realdirpath(p1 = v1) click to toggle source

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.

 
               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) click to toggle source

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.

 
               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?() click to toggle source

The opposite of absolute?

 
               # File pathname/lib/pathname.rb, line 219
def relative?
  path = @path
  while r = chop_basename(path)
    path, = r
  end
  path == ''
end
            
relative_path_from(base_directory) click to toggle source

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.

 
               # File pathname/lib/pathname.rb, line 449
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) click to toggle source

See File.rename. Rename the file.

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

See Dir.rmdir. Remove the referenced directory.

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

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

 
               # File pathname/lib/pathname.rb, line 519
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?() click to toggle source

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/...

 
               # File pathname/lib/pathname.rb, line 208
def root?
  !!(chop_basename(@path) == nil && /#{SEPARATOR_PAT}/o =~ @path)
end
            
setgid?() click to toggle source

See FileTest.setgid?.

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

See FileTest.setuid?.

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

See FileTest.size.

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

See FileTest.size?.

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

See FileTest.socket?.

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

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

 
               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() click to toggle source

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

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

See FileTest.sticky?.

 
               static VALUE
path_sticky_p(VALUE self)
{
    return rb_funcall(rb_mFileTest, rb_intern("sticky?"), 1, get_strpath(self));
}
            
sub(*args) click to toggle source

Return a pathname which is substituted by String#sub.

 
               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) click to toggle source

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

If self has no extension part, repl is appended.

 
               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));
}
            
sysopen([mode, [perm]]) → fixnum click to toggle source

See IO.sysopen.

 
               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);
}
            
taint() click to toggle source
 
               static VALUE
path_taint(VALUE self)
{
    rb_call_super(0, 0);
    rb_obj_taint(get_strpath(self));
    return self;
}
            
to_path → string click to toggle source

Return the path as a String.

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

 
               static VALUE
path_to_s(VALUE self)
{
    return rb_obj_dup(get_strpath(self));
}
            
to_s → string click to toggle source

Return the path as a String.

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

 
               static VALUE
path_to_s(VALUE self)
{
    return rb_obj_dup(get_strpath(self));
}
            
truncate(p1) click to toggle source

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

 
               static VALUE
path_truncate(VALUE self, VALUE length)
{
    return rb_funcall(rb_cFile, rb_intern("truncate"), 2, get_strpath(self), length);
}
            
untaint() click to toggle source
 
               static VALUE
path_untaint(VALUE self)
{
    rb_call_super(0, 0);
    rb_obj_untaint(get_strpath(self));
    return self;
}
            
utime(p1, p2) click to toggle source

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

 
               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?() click to toggle source

See FileTest.world_readable?.

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

See FileTest.world_writable?.

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

See FileTest.writable?.

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

See FileTest.writable_real?.

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

See FileTest.zero?.

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

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