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|
#!/usr/bin/ruby
# Used to download, extract and patch extension libraries (extlibs)
# for Ruby. See common.mk for Ruby's usage.
require 'digest'
require_relative 'downloader'
class ExtLibs
def cache_file(url, cache_dir)
Downloader.cache_file(url, nil, :cache_dir => cache_dir)
end
def do_download(url, cache_dir)
Downloader.download(url, nil, nil, nil, :cache_dir => cache_dir)
end
def do_checksum(cache, chksums)
chksums.each do |sum|
name, sum = sum.split(/:/)
if $VERBOSE
$stdout.print "checking #{name} of #{cache} ..."
$stdout.flush
end
hd = Digest(name.upcase).file(cache).hexdigest
if hd == sum
if $VERBOSE
$stdout.puts " OK"
$stdout.flush
end
else
if $VERBOSE
$stdout.puts " NG"
$stdout.flush
end
raise "checksum mismatch: #{cache}, #{name}:#{hd}, expected #{sum}"
end
end
end
def do_extract(cache, dir)
if $VERBOSE
$stdout.puts "extracting #{cache} into #{dir}"
$stdout.flush
end
ext = File.extname(cache)
case ext
when '.gz', '.tgz'
f = IO.popen(["gzip", "-dc", cache])
cache = cache.chomp('.gz')
when '.bz2', '.tbz'
f = IO.popen(["bzip2", "-dc", cache])
cache = cache.chomp('.bz2')
when '.xz', '.txz'
f = IO.popen(["xz", "-dc", cache])
cache = cache.chomp('.xz')
else
inp = cache
end
inp ||= f.binmode
ext = File.extname(cache)
case ext
when '.tar', /\A\.t[gbx]z\z/
pid = Process.spawn("tar", "xpf", "-", in: inp, chdir: dir)
when '.zip'
pid = Process.spawn("unzip", inp, "-d", dir)
end
f.close if f
Process.wait(pid)
$?.success? or raise "failed to extract #{cache}"
end
def do_patch(dest, patch, args)
if $VERBOSE
$stdout.puts "applying #{patch} under #{dest}"
$stdout.flush
end
Process.wait(Process.spawn("patch", "-d", dest, "-i", patch, *args))
$?.success? or raise "failed to patch #{patch}"
end
def do_command(mode, dest, url, cache_dir, chksums)
extracted = false
base = /.*(?=\.tar(?:\.\w+)?\z)/
case mode
when :download
cache = do_download(url, cache_dir)
do_checksum(cache, chksums)
when :extract
cache = cache_file(url, cache_dir)
target = File.join(dest, File.basename(cache)[base])
unless File.directory?(target)
do_checksum(cache, chksums)
extracted = do_extract(cache, dest)
end
when :all
cache = do_download(url, cache_dir)
target = File.join(dest, File.basename(cache)[base])
unless File.directory?(target)
do_checksum(cache, chksums)
extracted = do_extract(cache, dest)
end
end
extracted
end
def run(argv)
cache_dir = nil
mode = :all
until argv.empty?
case argv[0]
when '--download'
mode = :download
when '--extract'
mode = :extract
when '--patch'
mode = :patch
when '--all'
mode = :all
when '--cache'
argv.shift
cache_dir = argv[0]
when /\A--cache=/
cache_dir = $'
when '--'
argv.shift
break
when /\A-/
warn "unknown option: #{argv[0]}"
return false
else
break
end
argv.shift
end
success = true
argv.each do |dir|
Dir.glob("#{dir}/**/extlibs") do |list|
if $VERBOSE
$stdout.puts "downloading for #{list}"
$stdout.flush
end
extracted = false
dest = File.dirname(list)
url = chksums = nil
IO.foreach(list) do |line|
line.sub!(/\s*#.*/, '')
if chksums
chksums.concat(line.split)
elsif /^\t/ =~ line
if extracted and (mode == :all or mode == :patch)
patch, *args = line.split
do_patch(dest, patch, args)
end
next
else
url, *chksums = line.split(' ')
end
if chksums.last == '\\'
chksums.pop
next
end
next unless url
begin
extracted = do_command(mode, dest, url, cache_dir, chksums)
rescue => e
warn e.inspect
success = false
end
url = chksums = nil
end
end
end
success
end
def self.run(argv)
self.new.run(argv)
end
end
if $0 == __FILE__
exit ExtLibs.run(ARGV)
end
|
