#!/usr/bin/env ruby
# $Id$
# Copyright (C) 2005  Shugo Maeda <shugo@ruby-lang.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

require "optparse"
require "find"
require "fileutils"
require "rbconfig"

SCRIPT_NAME = File.basename($0)

$config = {
  "RUBY" => File.join(Config::CONFIG["bindir"],
                      Config::CONFIG["ruby_install_name"]),
  "prefix" => "/usr/local"
}

def create_file(filename, mode = 0644)
  open(filename + ".in") do |input|
    open(filename, "w") do |output|
      output.chmod(mode)
      for line in input
        s = line.gsub(/%([a-zA-z_]+)%/) {
          $config[$1]
        }
        output.print(s)
      end
    end
  end
end

def install_file(filename, dest, mode = 0644)
  FileUtils.mkdir_p(File.dirname(dest))
  FileUtils.cp(filename, dest)
  File.chmod(mode, dest)
end

def install_files(dir, target_dir, mode = 0644)
  Find.find(dir) do |filename|
    next if File.directory?(filename)
    dest = File.expand_path(filename[dir.length + 1 .. -1], target_dir)
    install_file(filename, dest, mode)
  end
end

options = OptionParser.new { |opts|
  opts.banner = "Usage: ruby #{SCRIPT_NAME} [options]"

  opts.separator("")

  opts.on("--ruby=PATH", String,
          "path to ruby [/usr/bin/ruby]") do |arg|
    $config["RUBY"] = arg
  end

  opts.on("--prefix=PREFIX", String,
          "install files in PREFIX [/usr/local]") do |arg|
    $config["prefix"] = arg
  end

  opts.separator("")

  opts.on("-h", "--help", "Show this help message.") do
    puts opts
    exit
  end
}
begin
  Dir.chdir(File.expand_path(File.dirname(__FILE__)))
  options.parse!
  $config["prefix"] = File.expand_path($config["prefix"])
  $config["bindir"] = "#{$config['prefix']}/bin"
  $config["datadir"] = "#{$config['prefix']}/share/ximapd"
  $config["rubydir"] = "#{$config['datadir']}/ruby"
  $config["backenddir"] = "#{$config['datadir']}/backends"
  $config["plugindir"] = "#{$config['datadir']}/plugins"
  create_file("ximapd", 0755)
  install_file("ximapd", "#{$config['bindir']}/ximapd", 0755)
  install_files("ruby", $config["rubydir"])
  install_files("backends", $config["backenddir"])
  install_files("plugins", $config["plugindir"])
rescue => e
  STDERR.printf("%s: %s\n", SCRIPT_NAME, e.message)
  exit(1)
end