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#!./miniruby

load "./rbconfig.rb"
include RbConfig

srcdir = File.dirname(__FILE__)
$:.unshift File.expand_path("lib", srcdir)
require 'fileutils'
require 'shellwords'
require 'optparse'
require 'optparse/shellwords'
require 'tempfile'

STDOUT.sync = true
File.umask(0)

def parse_args()
  $mantype = 'doc'
  $destdir = nil
  $make = 'make'
  $mflags = []
  $install = []
  opt = OptionParser.new
  opt.on('-n') {$dryrun = true}
  opt.on('--dest-dir=DIR') {|dir| $destdir = dir}
  opt.on('--make=COMMAND') {|make| $make = make}
  opt.on('--mantype=MAN') {|man| $mantype = man}
  opt.on('--make-flags=FLAGS', '--mflags', Shellwords) do |*v|
    if arg = v.first
      arg.insert(0, '-') if /\A[^-][^=]*\Z/ =~ arg
    end
    $mflags.concat(v)
  end
  opt.on('--install=TYPE', [:bin, :lib, :man]) {|ins| $install << ins}
  opt.parse! rescue abort [$!.message, opt].join("\n")

  $make, *rest = Shellwords.shellwords($make)
  $mflags.unshift(*rest) unless rest.empty?

  def $mflags.set?(flag)
    grep(/\A-(?!-).*#{'%s' % flag}/i) { return true }
    false
  end

  if $mflags.set?(?n)
    $dryrun = true
  else
    $mflags << '-n' if $dryrun
  end

  $mflags << "DESTDIR=#{$destdir}"

  $continue = $mflags.set?(?k)
end

parse_args()

include FileUtils::Verbose
include FileUtils::NoWrite if $dryrun
@fileutils_output = STDOUT
@fileutils_label = ''

def install?(type)
  yield if $install.empty? or $install.include?(type)
end

def install(src, dest, options = {})
  options[:preserve] = true
  super
end

$made_dirs = {}
def makedirs(dirs)
  dirs = fu_list(dirs)
  dirs.reject! do |dir|
    $made_dirs.fetch(dir) do
      $made_dirs[dir] = true
      File.directory?(dir)
    end
  end
  super(dirs, :mode => 0755, :verbose => true) unless dirs.empty?
end

def with_destdir(dir)
  return dir if !$destdir or $destdir.empty?
  dir = dir.sub(/\A\w:/, '') if File::PATH_SEPARATOR == ';'
  $destdir + dir
end

exeext = CONFIG["EXEEXT"]

ruby_install_name = CONFIG["ruby_install_name"]
rubyw_install_name = CONFIG["rubyw_install_name"]

version = CONFIG["ruby_version"]
bindir = with_destdir(CONFIG["bindir"])
libdir = with_destdir(CONFIG["libdir"])
rubylibdir = with_destdir(CONFIG["rubylibdir"])
archlibdir = with_destdir(CONFIG["archdir"])
sitelibdir = with_destdir(CONFIG["sitelibdir"])
sitearchlibdir = with_destdir(CONFIG["sitearchdir"])
mandir = with_destdir(File.join(CONFIG["mandir"], "man"))
configure_args = Shellwords.shellwords(CONFIG["configure_args"])
enable_shared = CONFIG["ENABLE_SHARED"] == 'yes'
dll = CONFIG["LIBRUBY_SO"]
lib = CONFIG["LIBRUBY"]
arc = CONFIG["LIBRUBY_A"]

makedirs [bindir, libdir, rubylibdir, archlibdir, sitelibdir, sitearchlibdir]

install?(:bin) do
  ruby_bin = File.join(bindir, ruby_install_name)

  install ruby_install_name+exeext, ruby_bin+exeext, :mode => 0755
  if File.exist?(ruby_install_name+exeext+".manifest")
    install ruby_install_name+exeext+".manifest", bindir, :mode => 0644
  end
  if rubyw_install_name and !rubyw_install_name.empty?
    install rubyw_install_name+exeext, bindir, :mode => 0755
    if File.exist?(rubyw_install_name+exeext+".manifest")
      install rubyw_install_name+exeext+".manifest", bindir, :mode => 0644
    end
  end
  if enable_shared and dll != lib
    install dll, bindir, :mode => 0755
    if File.exist?(dll+".manifest")
      install dll+".manifest", bindir, :mode => 0644
    end
  end
  install lib, libdir, :mode => 0755 unless lib == arc
  install arc, libdir, :mode => 0644
  install "config.h", archlibdir, :mode => 0644
  install "rbconfig.rb", archlibdir, :mode => 0644
  if CONFIG["ARCHFILE"]
    for file in CONFIG["ARCHFILE"].split
      install file, archlibdir, :mode => 0644
    end
  end

  if dll == lib and dll != arc
    for link in CONFIG["LIBRUBY_ALIASES"].split
      ln_sf(dll, File.join(libdir, link))
    end
  end
end

Dir.chdir srcdir

install?(:lib) do
ruby_shebang = File.join(CONFIG["bindir"], ruby_install_name)
if File::ALT_SEPARATOR
  ruby_bin_dosish = ruby_shebang.tr(File::SEPARATOR, File::ALT_SEPARATOR)
end
for src in Dir["bin/*"]
  next unless File.file?(src)
  next if /\/[.#]|(\.(old|bak|orig|rej|diff|patch|core)|~|\/core)$/i =~ src

  name = ruby_install_name.sub(/ruby/, File.basename(src))
  dest = File.join(bindir, name)

  install src, dest, :mode => 0755

  next if $dryrun

  shebang = ''
  body = ''
  open(dest, "r+") { |f|
    shebang = f.gets
    body = f.read

    if shebang.sub!(/^\#!.*?ruby\b/) {"#!" + ruby_shebang}
      f.rewind
      f.print shebang, body
      f.truncate(f.pos)
    end
  }

  if ruby_bin_dosish
    batfile = File.join(CONFIG["bindir"], name + ".bat")
    open(with_destdir(batfile), "w") { |b|
      b.print <<EOH, shebang, body, <<EOF
@echo off
if not "%~d0" == "~d0" goto WinNT
#{ruby_bin_dosish} -x "#{batfile}" %1 %2 %3 %4 %5 %6 %7 %8 %9
goto endofruby
:WinNT
"%~dp0#{ruby_install_name}" -x "%~f0" %*
goto endofruby
EOH
__END__
:endofruby
EOF
    }
  end
end

for f in Dir["lib/**/*{.rb,help-message}"]
  dir = File.dirname(f).sub!(/\Alib/, rubylibdir) || rubylibdir
  makedirs dir
  install f, dir, :mode => 0644
end
end

install?(:bin) do
for f in Dir["*.h"]
  install f, archlibdir, :mode => 0644
end

if RUBY_PLATFORM =~ /mswin32|mingw|bccwin32/
  makedirs File.join(archlibdir, "win32")
  install "win32/win32.h", File.join(archlibdir, "win32"), :mode => 0644
end
end

install?(:man) do
for mdoc in Dir["*.[1-9]"]
  next unless File.file?(mdoc) and open(mdoc){|fh| fh.read(1) == '.'}

  section = mdoc[-1,1]

  destdir = mandir + section
  destfile = File.join(destdir, mdoc.sub(/ruby/, ruby_install_name))

  makedirs destdir

  if $mantype == "doc"
    install mdoc, destfile, :mode => 0644
  else
    require 'mdoc2man.rb'

    w = Tempfile.open(mdoc)

    open(mdoc) { |r|
      Mdoc2Man.mdoc2man(r, w)
    }

    w.close

    install w.path, destfile, :mode => 0644
  end
end
end

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