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=begin
XSD4R - XML Instance parser library.
Copyright (C) 2002, 2003 NAKAMURA, Hiroshi.
This program 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.
This program 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
PRATICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 675 Mass
Ave, Cambridge, MA 02139, USA.
=end
require 'xsd/qname'
require 'xsd/ns'
require 'xsd/charset'
module XSD
module XMLParser
class Parser
class ParseError < Error; end
class FormatDecodeError < ParseError; end
class UnknownElementError < FormatDecodeError; end
class UnknownAttributeError < FormatDecodeError; end
class UnexpectedElementError < FormatDecodeError; end
class ElementConstraintError < FormatDecodeError; end
@@parser_factory = nil
def self.factory
@@parser_factory
end
def self.create_parser(host, opt = {})
@@parser_factory.new(host, opt)
end
def self.add_factory(factory)
if $DEBUG
puts "Set #{ factory } as XML processor."
end
@@parser_factory = factory
end
public
attr_accessor :charset
def initialize(host, opt = {})
@host = host
@charset = opt[:charset] || 'us-ascii'
end
def parse(string_or_readable)
@textbuf = ''
prologue
do_parse(string_or_readable)
epilogue
end
private
def do_parse(string_or_readable)
raise NotImplementError.new(
'Method do_parse must be defined in derived class.')
end
def start_element(name, attrs)
@host.start_element(name, attrs)
end
def characters(text)
@host.characters(text)
end
def end_element(name)
@host.end_element(name)
end
def prologue
end
def epilogue
end
def xmldecl_encoding=(charset)
if @charset.nil?
@charset = charset
else
# Definition in a stream (like HTTP) has a priority.
p "encoding definition: #{ charset } is ignored." if $DEBUG
end
end
end
end
end
|
