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class File < IO
include Enumerable
class FileError < Exception; end
class NoFileError < FileError; end
class UnableToStat < FileError; end
class PermissionError < FileError; end
attr_accessor :path
def initialize(fd_or_path, mode = "r", perm = 0666)
self._bless
if fd_or_path.kind_of? Fixnum
super(fd_or_path, mode)
else
@path = fd_or_path
perm = 0666 unless perm.is_a? Fixnum
fd = IO.sysopen(@path, mode, perm)
if fd < 0 && Object.const_defined?(:Errno)
begin
Errno.handle @path
rescue Errno::EMFILE
GC.run(true)
fd = IO.sysopen(@path, mode, perm)
Errno.handle if fd < 0
end
elsif fd < 0
raise NoFileError.new "no such file or directory"
end
super(fd, mode)
end
end
def self.join(*names)
if names.size == 0
""
elsif names.size == 1
names[0]
else
if names[0][-1] == File::SEPARATOR
s = names[0][0..-2]
else
s = names[0].dup
end
(1..names.size-2).each { |i|
t = names[i]
if t[0] == File::SEPARATOR and t[-1] == File::SEPARATOR
t = t[1..-2]
elsif t[0] == File::SEPARATOR
t = t[1..-1]
elsif t[-1] == File::SEPARATOR
t = t[0..-2]
end
s += File::SEPARATOR + t if t != ""
}
if names[-1][0] == File::SEPARATOR
s += File::SEPARATOR + names[-1][1..-1]
else
s += File::SEPARATOR + names[-1]
end
s
end
end
def self.directory?(file)
FileTest.directory?(file)
end
def self.exist?(file)
FileTest.exist?(file)
end
def self.exists?(file)
FileTest.exists?(file)
end
def self.file?(file)
FileTest.file?(file)
end
def self.pipe?(file)
FileTest.pipe?(file)
end
def self.size?(file)
FileTest.size?(file)
end
def self.socket?(file)
FileTest.socket?(file)
end
def self.symlink?(file)
FileTest.symlink?(file)
end
def self.zero?(file)
FileTest.zero?(file)
end
def self.extname(filename)
fname = self.basename(filename)
return '' if fname[0] == '.' || fname.index('.').nil?
ext = fname.split('.').last
ext.empty? ? '' : ".#{ext}"
end
end
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