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|
class File < IO
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)
if fd_or_path.kind_of? Fixnum
super(fd_or_path, mode)
else
@path = fd_or_path
fd = IO.sysopen(@path, mode, perm)
super(fd, mode)
end
end
def self.join(*names)
return "" if names.empty?
names.map! do |name|
case name
when String
name
when Array
if names == name
raise ArgumentError, "recursive array"
end
join(*name)
else
raise TypeError, "no implicit conversion of #{name.class} into String"
end
end
return names[0] if names.size == 1
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
def self.expand_path(path, default_dir = '.')
def concat_path(path, base_path)
if path[0] == "/" || path[1] == ':' # Windows root!
expanded_path = path
elsif path[0] == "~"
if (path[1] == "/" || path[1] == nil)
dir = path[1, path.size]
home_dir = _gethome
unless home_dir
raise ArgumentError, "couldn't find HOME environment -- expanding '~'"
end
expanded_path = home_dir
expanded_path += dir if dir
expanded_path += "/"
else
splitted_path = path.split("/")
user = splitted_path[0][1, splitted_path[0].size]
dir = "/" + splitted_path[1, splitted_path.size].join("/")
home_dir = _gethome(user)
unless home_dir
raise ArgumentError, "user #{user} doesn't exist"
end
expanded_path = home_dir
expanded_path += dir if dir
expanded_path += "/"
end
else
expanded_path = concat_path(base_path, _getwd)
expanded_path += "/" + path
end
expanded_path
end
expanded_path = concat_path(path, default_dir)
drive_prefix = ""
if File::ALT_SEPARATOR && expanded_path.size > 2 &&
("A".."Z").include?(expanded_path[0].upcase) && expanded_path[1] == ":"
drive_prefix = expanded_path[0, 2]
expanded_path = expanded_path[2, expanded_path.size]
end
expand_path_array = []
if File::ALT_SEPARATOR && expanded_path.include?(File::ALT_SEPARATOR)
expanded_path.gsub!(File::ALT_SEPARATOR, '/')
end
while expanded_path.include?('//')
expanded_path = expanded_path.gsub('//', '/')
end
if expanded_path != "/"
expanded_path.split('/').each do |path_token|
if path_token == '..'
if expand_path_array.size > 1
expand_path_array.pop
end
elsif path_token == '.'
# nothing to do.
else
expand_path_array << path_token
end
end
expanded_path = expand_path_array.join("/")
if expanded_path.empty?
expanded_path = '/'
end
end
if drive_prefix.empty?
expanded_path
else
drive_prefix + expanded_path.gsub("/", File::ALT_SEPARATOR)
end
end
def self.foreach(file)
if block_given?
self.open(file) do |f|
f.each {|l| yield l}
end
else
return self.new(file)
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.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
def self.path(filename)
if filename.kind_of?(String)
filename
elsif filename.respond_to?(:to_path)
filename.to_path
else
raise TypeError, "no implicit conversion of #{filename.class} into String"
end
end
end
|
