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Viewing changes to lib/rexml/light/node.rb

  • Committer: Bazaar Package Importer
  • Author(s): akira yamada
  • Date: 2007-03-13 22:11:58 UTC
  • mfrom: (1.1.5 upstream)
  • Revision ID: james.westby@ubuntu.com-20070313221158-h3oql37brlaf2go2
Tags: 1.8.6-1
http://bugs.debian.org/410018
* new upstream version, 1.8.6.
* libruby1.8 conflicts with libopenssl-ruby1.8 (< 1.8.6) (closes: #410018)
* changed packaging style to cdbs from dbs.

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lib/rexml/light/node.rb
 
1
require 'rexml/xmltokens'
 
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require 'rexml/light/node'
 
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# [ :element, parent, name, attributes, children* ]
 
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        # a = Node.new
 
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        # a << "B"              # => <a>B</a>
 
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        # a.b                   # => <a>B<b/></a>
 
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        # a.b[1]                        # => <a>B<b/><b/><a>
 
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        # a.b[1]["x"] = "y"     # => <a>B<b/><b x="y"/></a>
 
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        # a.b[0].c              # => <a>B<b><c/></b><b x="y"/></a>
 
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        # a.b.c << "D"          # => <a>B<b><c>D</c></b><b x="y"/></a>
 
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module REXML
 
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        module Light
 
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                # Represents a tagged XML element.  Elements are characterized by
 
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                # having children, attributes, and names, and can themselves be
 
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                # children.
 
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                class Node
 
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                        NAMESPLIT = /^(?:(#{XMLTokens::NCNAME_STR}):)?(#{XMLTokens::NCNAME_STR})/u
 
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                        PARENTS = [ :element, :document, :doctype ]
 
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                        # Create a new element.
 
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                        def initialize node=nil
 
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                                @node = node
 
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                                if node.kind_of? String
 
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                                        node = [ :text, node ]
 
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                                elsif node.nil?
 
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                                        node = [ :document, nil, nil ]
 
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                                elsif node[0] == :start_element
 
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                                        node[0] = :element
 
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                                elsif node[0] == :start_doctype
 
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                                        node[0] = :doctype
 
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                                elsif node[0] == :start_document
 
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                                        node[0] = :document
 
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                                end
 
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                        end
 
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                        def size
 
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                                if PARENTS.include? @node[0]
 
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                                        @node[-1].size
 
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                                else
 
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                                        0
 
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                                end
 
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                        end
 
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                        def each( &block )
 
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                                size.times { |x| yield( at(x+4) ) }
 
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                        end
 
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                        def name
 
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                                at(2)
 
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                        end
 
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                        def name=( name_str, ns=nil )
 
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                                pfx = ''
 
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                                pfx = "#{prefix(ns)}:" if ns
 
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                                _old_put(2, "#{pfx}#{name_str}")
 
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                        end
 
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                        def parent=( node )
 
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                                _old_put(1,node)
 
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                        end
 
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                        def local_name
 
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                                namesplit
 
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                                @name
 
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                        end
 
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                        def local_name=( name_str )
 
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                                _old_put( 1, "#@prefix:#{name_str}" )
 
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                        end
 
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                        def prefix( namespace=nil )
 
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                                prefix_of( self, namespace )
 
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                        end
 
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                        def namespace( prefix=prefix() )
 
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                                namespace_of( self, prefix )
 
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                        end
 
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                        def namespace=( namespace )
 
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                                @prefix = prefix( namespace )
 
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                                pfx = ''
 
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                                pfx = "#@prefix:" if @prefix.size > 0
 
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                                _old_put(1, "#{pfx}#@name")
 
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                        end
 
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                        def []( reference, ns=nil )
 
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                                if reference.kind_of? String
 
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                                        pfx = ''
 
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                                        pfx = "#{prefix(ns)}:" if ns
 
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                                        at(3)["#{pfx}#{reference}"]
 
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                                elsif reference.kind_of? Range
 
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                                        _old_get( Range.new(4+reference.begin, reference.end, reference.exclude_end?) )
 
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                                else
 
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                                        _old_get( 4+reference )
 
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                                end
 
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                        end
 
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                        def =~( path )
 
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                                XPath.match( self, path )
 
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                        end
 
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                        # Doesn't handle namespaces yet
 
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                        def []=( reference, ns, value=nil )
 
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                                if reference.kind_of? String
 
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                                        value = ns unless value
 
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                                        at( 3 )[reference] = value
 
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                                elsif reference.kind_of? Range
 
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                                        _old_put( Range.new(3+reference.begin, reference.end, reference.exclude_end?), ns )
 
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                                else
 
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                                        if value
 
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                                                _old_put( 4+reference, ns, value )
 
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                                        else
 
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                                                _old_put( 4+reference, ns )
 
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                                        end
 
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                                end
 
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                        end
 
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                        # Append a child to this element, optionally under a provided namespace.
 
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                        # The namespace argument is ignored if the element argument is an Element
 
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                        # object.  Otherwise, the element argument is a string, the namespace (if
 
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                        # provided) is the namespace the element is created in.
 
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                        def << element
 
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                                if node_type() == :text
 
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                                        at(-1) << element
 
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                                else
 
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                                        newnode = Node.new( element )
 
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                                        newnode.parent = self
 
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                                        self.push( newnode )
 
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                                end
 
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                                at(-1)
 
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                        end
 
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                        def node_type
 
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                                _old_get(0)
 
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                        end
 
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                        def text=( foo )
 
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                                replace = at(4).kind_of?(String)? 1 : 0
 
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                                self._old_put(4,replace, normalizefoo)
 
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                        end
 
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                        def root
 
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                                context = self
 
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                                context = context.at(1) while context.at(1)
 
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                        end
 
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                        def has_name?( name, namespace = '' )
 
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                                at(3) == name and namespace() == namespace
 
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                        end
 
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                        def children
 
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                                self
 
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                        end
 
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                        def parent
 
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                                at(1)
 
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                        end
 
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                        def to_s
 
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                        end
 
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                        private
 
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                        def namesplit
 
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                                return if @name.defined?
 
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                                at(2) =~ NAMESPLIT
 
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                                @prefix = '' || $1
 
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                                @name = $2
 
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                        end
 
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                        def namespace_of( node, prefix=nil )
 
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                                if not prefix
 
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                                        name = at(2)
 
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                                        name =~ NAMESPLIT
 
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                                        prefix = $1
 
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                                end
 
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                                to_find = 'xmlns'
 
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                                to_find = "xmlns:#{prefix}" if not prefix.nil?
 
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                                ns = at(3)[ to_find ]
 
181
                                ns ? ns : namespace_of( @node[0], prefix )
 
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                        end
 
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                        def prefix_of( node, namespace=nil )
 
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                                if not namespace
 
186
                                        name = node.name
 
187
                                        name =~ NAMESPLIT
 
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                                        $1
 
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                                else
 
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                                        ns = at(3).find { |k,v| v == namespace }
 
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                                        ns ? ns : prefix_of( node.parent, namespace )
 
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                                end
 
193
                        end
 
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                end
 
195
        end
 
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end