Automatically convert Perigee calls to client.Request calls.

terrible_hackedup_ruby.rb

#!/bin/env ruby

require 'find'

def convert(path)
  content = File.read(path)
  ncontent = []

  line_no = 1
  in_req = false
  had_req = false
  client_name = "client"

  content.split(/\n/).each do |line|
    skip = false

    case
    when in_req
      case line
      when /MoreHeaders: c(lient)?.AuthenticatedHeaders\(\)/
        skip = true
      when /ReqBody:/
        line.gsub! /ReqBody:/, "JSONBody:"
      when /Results:/
        line.gsub! /Results:/, "JSONResponse:"
      when /OkCodes:/
        # leave as-is
      when /^\s*}\)\s*$/
        in_req = false
      else
        puts
        puts "Oh snap! I hit an option I don't understand."
        puts "#{path}:#{line_no}"
        puts line
        puts
      end
    when !in_req && line =~ /func \w+\((\w+) \*gophercloud\.ServiceClient/
      client_name = $1
    when !in_req && line =~ /perigee.Request\(.*perigee.Options{\s*$/
      line.gsub! /perigee\.Request/, "#{client_name}.Request"
      line.gsub! /perigee\.Options/, "gophercloud.RequestOpts"
      in_req = true
      had_req = true
    end

    ncontent << line unless skip
    line_no += 1
  end

  if had_req
    File.write(path, ncontent.join("\n"))
    system "goimports -w -- '#{path}'"
    puts "Completed: [#{path}]"
  end
end

Find.find(*ARGV) do |path|
  next unless path =~ /\.go$/

  convert(path)
end