xcode-textencoding

#!/usr/bin/env ruby

require 'tempfile'
require 'fileutils'

def usage
  print "usage: xcode-textencoding [project-file] [text-encoding-name]\n"
  print "    project-file          a file path of Xcode project (ex. some.xcodeproj)\n"
  print "    text-encoding-name    screen name of text encoding\n"
end

if ARGV[0].nil? then
  usage()
  exit
end

file = ARGV[0] + "/project.pbxproj"

encoding_list = {
  "Arabic (ISO 8859-6)" => 2147484166,         "Arabic (Mac OS)" => 2147483652,                   "Arabic (Windows)" => 2147484934,
  "Baltic (ISO Latin 7)" => 2147484173,        "Baltic (Windows)" => 2147484935,                  "Celtic (ISO Latin 8)" => 2147484174,
  "Central European (ISO Latin 2)" => 9,       "Central European (ISO Latin 4)" => 2147484164,    "Central European (Mac OS)" => 2147483677,
  "Central European (Windows Latin 2)" => 15,  "Cyrillic (ISO 8859-5)" => 2147484165,             "Cyrillic (Mac OS)" => 2147483655,
  "Cyrillic (Windows)" => 11,                  "Greek (ISO 8859-7)" => 2147484167,                "Greek (Mac OS)" => 2147483654,
  "Greek (Windows)" => 13,                     "Hebrew (ISO 8859-8)" => 2147484168,               "Hebrew (Mac OS)" => 2147483653,
  "Hebrew (Windows)" => 2147484933,            "Icelandic (Mac OS)" => 2147483685,                "Japanese (ISO 2022-JP)" => 21,
  "Japanese (Mac OS)" => 2147483649,           "Japanese (Shift JIS)" => 2147486209,              "Japanese (Windows, DOS)" => 8,
  "Japanesee (EUC)" => 3,                      "Korean (EUC)" => 2147486016,                      "Korean (Mac OS)" => 2147483651,
  "Korean (Windows, DOS)" => 2147484706,       "Latin-US (DOS)" => 2147484672,                    "Non-lossy ASCII" => 7,
  "Nordic (ISO Latin 6)" => 2147484170,        "Romanian (ISO Latin 10)" => 2147484176,           "Simplified Chinese (GB 2312)" => 2147486000,
  "Simplified Chinese (Mac OS)" => 2147483673, "Simplified Chinese (Windows, DOS)" => 2147484705, "Thai (ISO 8859-11)" => 2147484171,
  "Traditional Chinese (EUC)" => 2147486001,   "Traditional Chinese (Mac OS)" => 2147483650,      "Traditional Chinese (Windows, DOS)" => 2147484707,
  "Turkish (ISO Latin 5)" => 2147484169,       "Turkish (Mac OS)" => 2147483683,                  "Turkish (Windows Latin 5)" => 14,
  "Unicode (UTF-8)" => 4,                      "Unicode (UTF-16)" => 10,                          "Unicode (UTF-16BE)" => 2415919360,
  "Unicode (UTF-16LE)" => 2483028224,          "Vietnamese (Windows)" => 2147484936,              "Western (ISO Latin 1)" => 5,
  "Western (ISO Latin 3)" => 2147484163,       "Western (ISO Latin 9)" => 2147484175,             "Western (Mac OS Roman)" => 30,
  "Western (NextStep)" => 2,                   "Western (Windows Latin 1)" => 12
}

if ARGV[1].nil? then
  print "error: specify text encoding\n"
  print "available text encoding:\n"
  encoding_list.keys.each { |line| print "\t" + line + "\n" }
  exit
end

file = ARGV[0] + "/project.pbxproj"

if not encoding_list.has_key?(ARGV[1]) then
  print "error: unknown text encoding \"" + ARGV[1] + "\""
  exit
end
encoding = encoding_list[ARGV[1]].to_s

temp = Tempfile.new("temp")
temp_file = temp.path
temp.close!

output = open(temp_file, "w")
input = open(file, "r")
input.each { |line|
  line.rstrip!
  if (line =~ /^(.*)\{(isa\s?=\s?PBXFileReference;[^}]*)\}(.*)$/) then
    prefix = $1
    isa_old = $2
    suffix = $3
    if (isa_old =~ /^(.*)(fileEncoding\s?=\s?[0-9]*)(.*)$/) then
      isa = $1 + "fileEncoding = #{encoding}" + $3
    else
      isa_old =~ /^(.*PBXFileReference;)( .*)$/
      isa = $1 + " fileEncoding = #{encoding};" + $2
    end
    output.puts(prefix + "{" + isa + "}" + suffix)
  else
    output.puts(line)
  end
}
output.close()
input.close()

FileUtils.mv(temp_file, file)