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#!/usr/bin/env ruby
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require 'find'
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def report_non_ascii(file_path)
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  has_errors = false
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  File.foreach(file_path).with_index(1) do |line, line_number|
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    line_utf8 = line.force_encoding('UTF-8')
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    next unless line_utf8.valid_encoding?
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    line_utf8.chars.each_with_index do |char, index|
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      unless char.ascii_only?
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        has_errors = true
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        puts "Error - non-ascii character found. #{file_path}: line #{line_number}, char #{index+1} => #{char.inspect}"
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      end
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    end
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  end
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  has_errors
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end
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path_to_search = File.expand_path(File.join(__FILE__, '..', '..', '..'))
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puts "Verifying binary encoding files in '#{path_to_search}' do not contain non-ASCII characters..."
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has_errors = false
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ran_at_least_once = false
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# Walk all files
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Find.find(path_to_search) do |path|
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  next unless File.file?(path)
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  next if path.include?('/vendor/')
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  next unless path.end_with?('.rb')
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  # Only check files that declare binary encoding
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  first_two_lines = File.open(path, "r") { |f| f.each_line.take(2).join }
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  next unless first_two_lines =~ /coding:\s*binary/
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  ran_at_least_once = true
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  has_errors |= report_non_ascii(path)
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end
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if !ran_at_least_once
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  puts "Did not run on any files, did not find any files with binary encoding declaration. Please check the script and ensure it is looking for the correct encoding declaration."
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  exit(1)
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end
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if has_errors
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  puts "Finished with errors. Please fix the above issues and run again."
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  exit(1)
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end
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puts "Finished without errors"
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