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Edit File : node.rb \| Size : 4.78 KB
# frozen_string_literal: false require_relative '../xmltokens' # [ :element, parent, name, attributes, children* ] # a = Node.new # a << "B" # => <a>B</a> # a.b # => <a>B<b/></a> # a.b[1] # => <a>B<b/><b/><a> # a.b[1]["x"] = "y" # => <a>B<b/><b x="y"/></a> # a.b[0].c # => <a>B<b><c/></b><b x="y"/></a> # a.b.c << "D" # => <a>B<b><c>D</c></b><b x="y"/></a> module REXML module Light # Represents a tagged XML element. Elements are characterized by # having children, attributes, and names, and can themselves be # children. class Node NAMESPLIT = /^(?:(#{XMLTokens::NCNAME_STR}):)?(#{XMLTokens::NCNAME_STR})/u PARENTS = [ :element, :document, :doctype ] # Create a new element. def initialize node=nil @node = node if node.kind_of? String node = [ :text, node ] elsif node.nil? node = [ :document, nil, nil ] elsif node[0] == :start_element node[0] = :element elsif node[0] == :start_doctype node[0] = :doctype elsif node[0] == :start_document node[0] = :document end end def size if PARENTS.include? @node[0] @node[-1].size else 0 end end def each size.times { \|x\| yield( at(x+4) ) } end def name at(2) end def name=( name_str, ns=nil ) pfx = '' pfx = "#{prefix(ns)}:" if ns _old_put(2, "#{pfx}#{name_str}") end def parent=( node ) _old_put(1,node) end def local_name namesplit @name end def local_name=( name_str ) _old_put( 1, "#@prefix:#{name_str}" ) end def prefix( namespace=nil ) prefix_of( self, namespace ) end def namespace( prefix=prefix() ) namespace_of( self, prefix ) end def namespace=( namespace ) @prefix = prefix( namespace ) pfx = '' pfx = "#@prefix:" if @prefix.size > 0 _old_put(1, "#{pfx}#@name") end def []( reference, ns=nil ) if reference.kind_of? String pfx = '' pfx = "#{prefix(ns)}:" if ns at(3)["#{pfx}#{reference}"] elsif reference.kind_of? Range _old_get( Range.new(4+reference.begin, reference.end, reference.exclude_end?) ) else _old_get( 4+reference ) end end def =~( path ) XPath.match( self, path ) end # Doesn't handle namespaces yet def []=( reference, ns, value=nil ) if reference.kind_of? String value = ns unless value at( 3 )[reference] = value elsif reference.kind_of? Range _old_put( Range.new(3+reference.begin, reference.end, reference.exclude_end?), ns ) else if value _old_put( 4+reference, ns, value ) else _old_put( 4+reference, ns ) end end end # Append a child to this element, optionally under a provided namespace. # The namespace argument is ignored if the element argument is an Element # object. Otherwise, the element argument is a string, the namespace (if # provided) is the namespace the element is created in. def << element if node_type() == :text at(-1) << element else newnode = Node.new( element ) newnode.parent = self self.push( newnode ) end at(-1) end def node_type _old_get(0) end def text=( foo ) replace = at(4).kind_of?(String)? 1 : 0 self._old_put(4,replace, normalizefoo) end def root context = self context = context.at(1) while context.at(1) end def has_name?( name, namespace = '' ) at(3) == name and namespace() == namespace end def children self end def parent at(1) end def to_s end private def namesplit return if @name.defined? at(2) =~ NAMESPLIT @prefix = '' \|\| $1 @name = $2 end def namespace_of( node, prefix=nil ) if not prefix name = at(2) name =~ NAMESPLIT prefix = $1 end to_find = 'xmlns' to_find = "xmlns:#{prefix}" if not prefix.nil? ns = at(3)[ to_find ] ns ? ns : namespace_of( @node[0], prefix ) end def prefix_of( node, namespace=nil ) if not namespace name = node.name name =~ NAMESPLIT $1 else ns = at(3).find { \|k,v\| v == namespace } ns ? ns : prefix_of( node.parent, namespace ) end end end end end Back

Edit File : node.rb | Size : 4.78 KB

# frozen_string_literal: false
require_relative '../xmltokens'

# [ :element, parent, name, attributes, children* ]
 # a = Node.new
 # a << "B" # => <a>B</a>
 # a.b # => <a>B</a>
 # a.b[1] # => <a>B<a>
 # a.b[1]["x"] = "y" # => <a>B</a>
 # a.b[0].c # => <a>B<c/></a>
 # a.b.c << "D" # => <a>B<c>D</c></a>
module REXML
 module Light
 # Represents a tagged XML element. Elements are characterized by
 # having children, attributes, and names, and can themselves be
 # children.
 class Node
 NAMESPLIT = /^(?:(#{XMLTokens::NCNAME_STR}):)?(#{XMLTokens::NCNAME_STR})/u
 PARENTS = [ :element, :document, :doctype ]
 # Create a new element.
 def initialize node=nil
 @node = node
 if node.kind_of? String
 node = [ :text, node ]
 elsif node.nil?
 node = [ :document, nil, nil ]
 elsif node[0] == :start_element
 node[0] = :element
 elsif node[0] == :start_doctype
 node[0] = :doctype
 elsif node[0] == :start_document
 node[0] = :document
 end
 end

def size
        if PARENTS.include? @node[0]
          @node[-1].size
        else
          0
        end
      end

def each
        size.times { |x| yield( at(x+4) ) }
      end

def name
        at(2)
      end

def name=( name_str, ns=nil )
        pfx = ''
        pfx = "#{prefix(ns)}:" if ns
        _old_put(2, "#{pfx}#{name_str}")
      end

def parent=( node )
        _old_put(1,node)
      end

def local_name
        namesplit
        @name
      end

def local_name=( name_str )
        _old_put( 1, "#@prefix:#{name_str}" )
      end

def prefix( namespace=nil )
        prefix_of( self, namespace )
      end

def namespace( prefix=prefix() )
        namespace_of( self, prefix )
      end

def namespace=( namespace )
        @prefix = prefix( namespace )
        pfx = ''
        pfx = "#@prefix:" if @prefix.size > 0
        _old_put(1, "#{pfx}#@name")
      end

def []( reference, ns=nil )
        if reference.kind_of? String
          pfx = ''
          pfx = "#{prefix(ns)}:" if ns
          at(3)["#{pfx}#{reference}"]
        elsif reference.kind_of? Range
          _old_get( Range.new(4+reference.begin, reference.end, reference.exclude_end?) )
        else
          _old_get( 4+reference )
        end
      end

def =~( path )
        XPath.match( self, path )
      end

# Doesn't handle namespaces yet
      def []=( reference, ns, value=nil )
        if reference.kind_of? String
          value = ns unless value
          at( 3 )[reference] = value
        elsif reference.kind_of? Range
          _old_put( Range.new(3+reference.begin, reference.end, reference.exclude_end?), ns )
        else
          if value
            _old_put( 4+reference, ns, value )
          else
            _old_put( 4+reference, ns )
          end
        end
      end

# Append a child to this element, optionally under a provided namespace.
 # The namespace argument is ignored if the element argument is an Element
 # object. Otherwise, the element argument is a string, the namespace (if
 # provided) is the namespace the element is created in.
 def << element
 if node_type() == :text
 at(-1) << element
 else
 newnode = Node.new( element )
 newnode.parent = self
 self.push( newnode )
 end
 at(-1)
 end

def node_type
        _old_get(0)
      end

def text=( foo )
        replace = at(4).kind_of?(String)? 1 : 0
        self._old_put(4,replace, normalizefoo)
      end

def root
        context = self
        context = context.at(1) while context.at(1)
      end

def has_name?( name, namespace = '' )
        at(3) == name and namespace() == namespace
      end

def children
        self
      end

def parent
        at(1)
      end

def to_s

end

private

def namesplit
        return if @name.defined?
        at(2) =~ NAMESPLIT
        @prefix = '' || $1
        @name = $2
      end

def namespace_of( node, prefix=nil )
        if not prefix
          name = at(2)
          name =~ NAMESPLIT
          prefix = $1
        end
        to_find = 'xmlns'
        to_find = "xmlns:#{prefix}" if not prefix.nil?
        ns = at(3)[ to_find ]
        ns ? ns : namespace_of( @node[0], prefix )
      end

def prefix_of( node, namespace=nil )
        if not namespace
          name = node.name
          name =~ NAMESPLIT
          $1
        else
          ns = at(3).find { |k,v| v == namespace }
          ns ? ns : prefix_of( node.parent, namespace )
        end
      end
    end
  end
end

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