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# $Id: console.rb,v 1.9 2003/08/29 15:43:42 sdalu Exp $
#
# CONTACT : zonecheck@nic.fr
# AUTHOR : Stephane D'Alu <sdalu@nic.fr>
#
# CREATED : 2003/03/17 10:54:53
# REVISION : $Revision: 1.9 $
# DATE : $Date: 2003/08/29 15:43:42 $
#
# CONTRIBUTORS: (see also CREDITS file)
#
#
# LICENSE : GPL v2 (or MIT/X11-like after agreement)
# COPYRIGHT : AFNIC (c) 2003
#
# This file is part of ZoneCheck.
#
# ZoneCheck is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# ZoneCheck is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ZoneCheck; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
#
# XXX: NEED CLEANUP
#
class Console
##
## Exception: requested encoding is not possible (conversion lose)
##
class EncodingError < StandardError
end
##
##
##
class IOConv
def initialize(console, io, ctl=nil)
@io = io
@console = console
end
def puts(*args)
@io.puts *args.collect { |e| @console.conv_to(e.to_s) }
end
def print(*args)
@io.print *args.collect { |e| @console.conv_to(e.to_s) }
end
def printf(*args)
@io.printf *args.collect { |e|
case e
when String then @console.conv_to(e)
else e
end
}
end
def method_missing(method, *args)
@io.method(method).call(*args)
end
end
attr_reader :stdin, :stdout, :stderr
attr_reader :encoding
attr_reader :ctl
def initialize(stdin=$stdin, stdout=$stdout, stderr=$stderr)
# Initialize conversion enconding engine
@iconv = nil
begin
require 'iconv'
rescue LoadError => e
@iconv = false
end
@encoding = 'UTF-8'
#
@ctl = {
've' => "\033[?25h", # show cursor
'vi' => "\033[?25l", # hide cursor
'ce' => "\033[K" # clear end of line
}
#
@stdin = IOConv::new(self, stdin)
@stdout = IOConv::new(self, stdout, @ctl)
@stderr = IOConv::new(self, stderr, @ctl)
end
def encoding=(encoding)
return true if @encoding == encoding # Nothing to change
return false if @iconv == false # Don't support convertion
@iconv = case encoding
when NilClass, 'UTF-8' then nil
else Iconv::new(encoding, 'UTF-8')
end
@encoding = encoding || 'UTF-8'
end
def conv_to(msg)
begin
return @iconv ? @iconv.iconv(msg) : msg
rescue Iconv::Failure, Iconv::InvalidCharacter => e
raise EncodingError, "Can't do full conversion to #{@encoding}"
end
end
end
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