Find/Replace across a project

Jim Weirich introduced using Rake as a library with his Find in Code

I've been enjoying fic, which lives in my ~/bin directory at work. Enjoying it so much that I decided I needed something as powerful for replacing in code. This small variant on Find in Code saved me much time in renaming a couple of models this afternoon.

h2. Replace in Code




#!/usr/bin/env ruby

#ruby
require 'rubygems'

require 'breakpoint'

  exts = ['.rb']

  if ARGV[0] =~ /^\.[a-zA-Z0-9]+$/

    exts = []

    while ARGV[0] =~ /^\.[a-zA-Z0-9]+$/

      exts << ARGV.shift

    end

  end



  ext = "{"  exts.join(',')  "}" 



  if ARGV.size < 1

    puts "Usage: #{File.basename($0)} [.ext ...] pattern replacement" 

    exit 1

  end



  pattern = Regexp.new(ARGV.first)

  replace = ARGV.last



require 'rubygems'

  require 'rake'

  FileList["*/#{ext}"].egrep(pattern) do |fn, ln, line|

    string = File.open(fn).read

    st_array = string.split("\n")

    st_array[ln-1].gsub!(pattern, replace)

    new_string = st_array.join("\n")

    File.open(fn, 'w') do |f|

      f.write new_string

    end

    puts "#{fn}:#{ln} replaced: \nold: #{line}new: #{line.gsub(pattern, replace)}"

  end