install.rb

#! /usr/bin/env ruby
#
# usage: install.rb [(--install-dir | -i) install_directory]
#
# This script installs midilib into the Ruby site-local library directory.
#
# Author:: Jim Menard (mailto:jimm@io.com)
# Copyright:: Copyright (c) 2003-2009 by Jim Menard
# License:: Distributed under the same license as Ruby.
#

require 'getoptlong'
require 'ftools'
require 'find'

SOURCE_DIR = 'lib'
LIB_DIR = 'midilib'
IO_DIR = File.join(LIB_DIR, 'io')

def instdir
    g = GetoptLong.new(['--install-dir', '-i', GetoptLong::REQUIRED_ARGUMENT])
    g.each { | name, arg |
	if name == '--install-dir'
	    return arg
	else
	    $stderr.puts "usage: $0 [--install-dir dir]"
	end
    }

    begin
	require 'rbconfig'
	libdir = Config::CONFIG['sitedir'] + "/" + 
	    Config::CONFIG['MAJOR'] + "." +
	    Config::CONFIG['MINOR']
    rescue ScriptError
	$LOAD_PATH.each do |l|
	    if l =~ /site_ruby/ && l =~ /\d$/ && l !~ /#{PLATFORM}/
		libdir = l
		break
	    end
	end
	STDERR.puts "Can't find required file `rbconfig.rb'."
	STDERR.puts "The `midilib' files need to be installed manually in" +
	    " #{libdir}"
    end
    return libdir
end

INSTALL_DIR = instdir()
files = Dir.chdir('lib') { Dir['**/*.rb'] }

files.each { | f |
    dir = File.dirname(f)
    target_dir = File.join(INSTALL_DIR, dir)
    File.makedirs(target_dir) unless File.exist?(target_dir)
    File.install(File.join('lib', f), File.join(INSTALL_DIR, f), 0644, true)
}