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# encoding: utf-8
=begin
iconv.rb - Pseudo Iconv class. Supports Iconv.iconv, Iconv.conv.
For Matz Ruby:
If you don't have iconv but glib2, this library uses glib2 iconv functions.
For JRuby:
Use Java String class to convert strings.
Copyright (C) 2004-2009 Masao Mutoh
You may redistribute it and/or modify it under the same
license terms as Ruby or LGPL.
=end
begin
require 'iconv.so'
rescue LoadError
# Pseudo Iconv class
#
# ==== For Matz Ruby:
# If you don't have iconv but Ruby/GLib2, this library uses Ruby/GLib2's
# iconv functions.
#
# Ruby/GLib is a module which is provided from Ruby-GNOME2 Project.
# You can get binaries for Win32(One-Click Ruby Installer).
# <URL: http://ruby-gnome2.sourceforge.jp/>
# ==== For JRuby:
# Use Java String class to convert strings.
class Iconv
module Failure; end
class InvalidEncoding < ArgumentError; include Failure; end
class IllegalSequence < ArgumentError; include Failure; end
class InvalidCharacter < ArgumentError; include Failure; end
if RUBY_PLATFORM =~ /java/
def self.conv(to, from, str)
raise InvalidCharacter, "the 3rd argument is nil" unless str
begin
str = java.lang.String.new(str.unpack("C*").to_java(:byte), from)
str.getBytes(to).to_ary.pack("C*")
rescue java.io.UnsupportedEncodingException
raise InvalidEncoding
end
end
else
begin
require 'glib2'
def self.check_glib_version?(major, minor, micro) # :nodoc:
(GLib::BINDING_VERSION[0] > major ||
(GLib::BINDING_VERSION[0] == major &&
GLib::BINDING_VERSION[1] > minor) ||
(GLib::BINDING_VERSION[0] == major &&
GLib::BINDING_VERSION[1] == minor &&
GLib::BINDING_VERSION[2] >= micro))
end
if check_glib_version?(0, 11, 0)
# This is a function equivalent of Iconv.iconv.
# * to: encoding name for destination
# * from: encoding name for source
# * str: strings to be converted
# * Returns: Returns an Array of converted strings.
def self.conv(to, from, str)
begin
GLib.convert(str, to, from)
rescue GLib::ConvertError => e
case e.code
when GLib::ConvertError::NO_CONVERSION
raise InvalidEncoding.new(str)
when GLib::ConvertError::ILLEGAL_SEQUENCE
raise IllegalSequence.new(str)
else
raise InvalidCharacter.new(str)
end
end
end
else
def self.conv(to, from, str) # :nodoc:
begin
GLib.convert(str, to, from)
rescue
raise IllegalSequence.new(str)
end
end
end
rescue LoadError
def self.conv(to, from, str) # :nodoc:
warn "Iconv was not found." if $DEBUG
str
end
end
end
def self.iconv(to, from, str)
conv(to, from, str).split(//)
end
end
end
if __FILE__ == $0
puts Iconv.iconv("EUC-JP", "UTF-8", "ほげ").join
begin
puts Iconv.iconv("EUC-JP", "EUC-JP", "ほげ").join
rescue Iconv::Failure
puts $!
puts $!.class
end
end
|
