chromium net_error_list.h -> js

process_chromium_net_error_list.rb

#!/usr/bin/env ruby

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

# net_error_list.h
# https://cs.chromium.org/chromium/src/net/base/net_error_list.h?sq=package:chromium

path = ARGV[0] or (puts "Usage: Pass path to net_error_list.h."; exit)
path_out = "./net_error_list_#{Time.now.to_i}.js"
File.exists?(path_out) and raise "Output file exists: #{path_out}"

regex = /^NET_ERROR\(([\w]+),\s+?(\-?\d+?)\)$/
begin
  file_out = File.open(path_out, "w:UTF-8")
  file_out.puts("const requestErrorList = {")
  write_buffer = nil
  File.readlines(path).each do |line|
    next if !line.start_with?("NET_ERROR")
    match_result = regex.match(line) or next
    error_name, error_code = match_result[1], match_result[2]
    file_out.puts("#{write_buffer},") if write_buffer
    write_buffer = "  #{error_name}: #{error_code}"
  end
  file_out.puts(write_buffer) if write_buffer
  file_out.puts("}\n\nmodule.exports = requestErrorList")
ensure
  file_out.close
end

puts "Wrote #{path_out}"