#! /usr/bin/env ruby
# coding: utf-8
#
# USAGE: linesub [options] str0 str1 files ...

require "pp"
require "optparse"
require "rubygems"
require "tempfile"
#gem "tefil"
require "tefil.rb"

## option analysis
options = {}
op = OptionParser.new
op.banner = [
  "Usage: #{File.basename("#{__FILE__}")} [options] old_str new_str [files]",
].join("\n")
op.on("-o"    , "--overwrite"    , "Overwrite"){    options[:overwrite] = true}
op.on("-g"    , "--global"    , "Globally substitute"){    options[:global] = true}
op.on("-r"    , "--reg-exp"    , "Regular expression for old_str"){ options[:regexp] = true}
op.on("-f"    , "--filename"    , "Rename filename at the same time"){ options[:filename] = true}
op.parse!(ARGV)

old_str = ARGV.shift
new_str = ARGV.shift

options[:overwrite] ||= false

#if options[:filename]
#  if FileTest.exist? new_str
#end

tf = Tefil::LineSubstituter.new(old_str, new_str, options)
tf.filter(ARGV)