зеркало из https://github.com/github/ruby.git
102 строки
2.3 KiB
Ruby
102 строки
2.3 KiB
Ruby
module Path
|
|
module_function
|
|
|
|
def clean(path)
|
|
path = "#{path}/".gsub(/(\A|\/)(?:\.\/)+/, '\1').tr_s('/', '/')
|
|
nil while path.sub!(/[^\/]+\/\.\.\//, '')
|
|
path
|
|
end
|
|
|
|
def relative(path, base)
|
|
path = clean(path)
|
|
base = clean(base)
|
|
path, base = [path, base].map{|s|s.split("/")}
|
|
until path.empty? or base.empty? or path[0] != base[0]
|
|
path.shift
|
|
base.shift
|
|
end
|
|
path, base = [path, base].map{|s|s.join("/")}
|
|
if base.empty?
|
|
path
|
|
elsif base.start_with?("../") or File.absolute_path?(base)
|
|
File.expand_path(path)
|
|
else
|
|
base.gsub!(/[^\/]+/, '..')
|
|
File.join(base, path)
|
|
end
|
|
end
|
|
|
|
def clean_link(src, dest)
|
|
begin
|
|
link = File.readlink(dest)
|
|
rescue
|
|
else
|
|
return if link == src
|
|
File.unlink(dest)
|
|
end
|
|
yield src, dest
|
|
end
|
|
|
|
# Extensions to FileUtils
|
|
|
|
module Mswin
|
|
def ln_safe(src, dest, *opt)
|
|
cmd = ["mklink", dest.tr("/", "\\"), src.tr("/", "\\")]
|
|
cmd[1, 0] = opt
|
|
return if system("cmd", "/c", *cmd)
|
|
# TODO: use RUNAS or something
|
|
puts cmd.join(" ")
|
|
end
|
|
|
|
def ln_dir_safe(src, dest)
|
|
ln_safe(src, dest, "/d")
|
|
end
|
|
end
|
|
|
|
module HardlinkExcutable
|
|
def ln_exe(src, dest)
|
|
ln(src, dest, force: true)
|
|
end
|
|
end
|
|
|
|
def ln_safe(src, dest)
|
|
ln_sf(src, dest)
|
|
rescue Errno::ENOENT
|
|
# Windows disallows to create broken symboic links, probably because
|
|
# it is a kind of reparse points.
|
|
raise if File.exist?(src)
|
|
end
|
|
|
|
alias ln_dir_safe ln_safe
|
|
alias ln_exe ln_safe
|
|
|
|
def ln_relative(src, dest, executable = false)
|
|
return if File.identical?(src, dest)
|
|
parent = File.dirname(dest)
|
|
File.directory?(parent) or mkdir_p(parent)
|
|
if executable
|
|
return (ln_exe(src, dest) if File.exist?(src))
|
|
end
|
|
clean_link(relative(src, parent), dest) {|s, d| ln_safe(s, d)}
|
|
end
|
|
|
|
def ln_dir_relative(src, dest)
|
|
return if File.identical?(src, dest)
|
|
parent = File.dirname(dest)
|
|
File.directory?(parent) or mkdir_p(parent)
|
|
clean_link(relative(src, parent), dest) {|s, d| ln_dir_safe(s, d)}
|
|
end
|
|
|
|
case (CROSS_COMPILING || RUBY_PLATFORM)
|
|
when /linux|darwin|solaris/
|
|
prepend HardlinkExcutable
|
|
extend HardlinkExcutable
|
|
when /mingw|mswin/
|
|
unless File.respond_to?(:symlink)
|
|
prepend Mswin
|
|
extend Mswin
|
|
end
|
|
else
|
|
end
|
|
end
|