Top Level Namespace

Defined Under Namespace

Classes: Iconv

Constant Summary collapse

HEADER =
<<SRC
require 'iconv.so'

class Iconv
  case RUBY_PLATFORM
SRC
OS =
RbConfig::CONFIG["target_os"]
SHELL =
RbConfig::CONFIG['SHELL']

Instance Method Summary collapse

Instance Method Details

#charset_alias(config_charset, mapfile, target = OS) ⇒ Object


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# File 'mkwrapper.rb', line 15

def charset_alias(config_charset, mapfile = nil)
  found = nil
  src = [HEADER]
  open(config_charset) do |input|
    input.find {|line| /^case "\$os" in/ =~ line} or return
    input.each do |line|
      case line
      when /^\s*([-\w\*]+(?:\s*\|\s*[-\w\*]+)*)(?=\))/
        (s = "  when ") << $&.split('|').collect {|targ|
          targ.strip!
          tail = targ.chomp!("*") ? '' : '\z'
          head = targ.slice!(/\A\*/) ? '' : '\A'
          targ.gsub!(/\*/, '.*')
          "/#{head}#{targ}#{tail}/"
        }.join(", ")
        src << s
        found = {}
      when /^\s*echo "(?:\$\w+\.)?([-\w*]+)\s+([-\w]+)"/
        sys, can = $1, $2
        can.downcase!
        unless found[can] or (/\Aen_(?!US\z)/ =~ sys && /\ACP437\z/i =~ can)
          found[can] = true
          src << "    charset_map['#{can}'] = '#{sys}'.freeze"
        end
      when /^\s*;;/
        found = nil
      end
    end
  end
  src << "  end" << "end"
  if mapfile
    open(mapfile, "wb") {|f| f.puts(*src)}
  else
    puts(*src)
  end
end