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| Current File : //usr/share/ruby/tmpdir.rb |
#
# tmpdir - retrieve temporary directory path
#
# $Id: tmpdir.rb 38348 2012-12-12 12:40:51Z nobu $
#
require 'fileutils'
begin
require 'etc.so'
rescue LoadError
end
class Dir
@@systmpdir ||= defined?(Etc.systmpdir) ? Etc.systmpdir : '/tmp'
##
# Returns the operating system's temporary file path.
def Dir::tmpdir
if $SAFE > 0
tmp = @@systmpdir
else
tmp = nil
for dir in [ENV['TMPDIR'], ENV['TMP'], ENV['TEMP'], @@systmpdir, '/tmp', '.']
next if !dir
dir = File.expand_path(dir)
if stat = File.stat(dir) and stat.directory? and stat.writable? and
(!stat.world_writable? or stat.sticky?)
tmp = dir
break
end rescue nil
end
raise ArgumentError, "could not find a temporary directory" if !tmp
tmp
end
end
# Dir.mktmpdir creates a temporary directory.
#
# The directory is created with 0700 permission.
# Application should not change the permission to make the temporary directory accesible from other users.
#
# The prefix and suffix of the name of the directory is specified by
# the optional first argument, <i>prefix_suffix</i>.
# - If it is not specified or nil, "d" is used as the prefix and no suffix is used.
# - If it is a string, it is used as the prefix and no suffix is used.
# - If it is an array, first element is used as the prefix and second element is used as a suffix.
#
# Dir.mktmpdir {|dir| dir is ".../d..." }
# Dir.mktmpdir("foo") {|dir| dir is ".../foo..." }
# Dir.mktmpdir(["foo", "bar"]) {|dir| dir is ".../foo...bar" }
#
# The directory is created under Dir.tmpdir or
# the optional second argument <i>tmpdir</i> if non-nil value is given.
#
# Dir.mktmpdir {|dir| dir is "#{Dir.tmpdir}/d..." }
# Dir.mktmpdir(nil, "/var/tmp") {|dir| dir is "/var/tmp/d..." }
#
# If a block is given,
# it is yielded with the path of the directory.
# The directory and its contents are removed
# using FileUtils.remove_entry before Dir.mktmpdir returns.
# The value of the block is returned.
#
# Dir.mktmpdir {|dir|
# # use the directory...
# open("#{dir}/foo", "w") { ... }
# }
#
# If a block is not given,
# The path of the directory is returned.
# In this case, Dir.mktmpdir doesn't remove the directory.
#
# dir = Dir.mktmpdir
# begin
# # use the directory...
# open("#{dir}/foo", "w") { ... }
# ensure
# # remove the directory.
# FileUtils.remove_entry dir
# end
#
def Dir.mktmpdir(prefix_suffix=nil, *rest)
path = Tmpname.create(prefix_suffix || "d", *rest) {|n| mkdir(n, 0700)}
if block_given?
begin
yield path
ensure
stat = File.stat(File.dirname(path))
if stat.world_writable? and !stat.sticky?
raise ArgumentError, "parent directory is world writable but not sticky"
end
FileUtils.remove_entry path
end
else
path
end
end
module Tmpname # :nodoc:
module_function
def tmpdir
Dir.tmpdir
end
def make_tmpname(prefix_suffix, n)
case prefix_suffix
when String
prefix = prefix_suffix
suffix = ""
when Array
prefix = prefix_suffix[0]
suffix = prefix_suffix[1]
else
raise ArgumentError, "unexpected prefix_suffix: #{prefix_suffix.inspect}"
end
prefix = prefix.delete("#{File::SEPARATOR}#{File::ALT_SEPARATOR}")
suffix &&= suffix.delete("#{File::SEPARATOR}#{File::ALT_SEPARATOR}")
t = Time.now.strftime("%Y%m%d")
path = "#{prefix}#{t}-#{$$}-#{rand(0x100000000).to_s(36)}"
path << "-#{n}" if n
path << suffix
end
def create(basename, *rest)
if opts = Hash.try_convert(rest[-1])
opts = opts.dup if rest.pop.equal?(opts)
max_try = opts.delete(:max_try)
opts = [opts]
else
opts = []
end
tmpdir, = *rest
if $SAFE > 0 and tmpdir.tainted?
tmpdir = '/tmp'
else
tmpdir ||= tmpdir()
end
n = nil
begin
path = File.join(tmpdir, make_tmpname(basename, n))
yield(path, n, *opts)
rescue Errno::EEXIST
n ||= 0
n += 1
retry if !max_try or n < max_try
raise "cannot generate temporary name using `#{basename}' under `#{tmpdir}'"
end
path
end
end
end