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ðŸ“ ..
ðŸ“„ attlistdecl.rb(1.92 KB)
ðŸ“„ attribute.rb(5.53 KB)
ðŸ“„ cdata.rb(1.59 KB)
ðŸ“„ child.rb(2.66 KB)
ðŸ“„ comment.rb(2.12 KB)
ðŸ“„ doctype.rb(7.97 KB)
ðŸ“„ document.rb(9.55 KB)
ðŸ“ dtd
ðŸ“„ element.rb(44.5 KB)
ðŸ“„ encoding.rb(1.16 KB)
ðŸ“„ entity.rb(5.4 KB)
ðŸ“ formatters
ðŸ“„ functions.rb(12.41 KB)
ðŸ“„ instruction.rb(2.14 KB)
ðŸ“ light
ðŸ“„ namespace.rb(1.4 KB)
ðŸ“„ node.rb(2.18 KB)
ðŸ“„ output.rb(553 B)
ðŸ“„ parent.rb(4.27 KB)
ðŸ“„ parseexception.rb(1.25 KB)
ðŸ“ parsers
ðŸ“„ quickpath.rb(9.12 KB)
ðŸ“„ rexml.rb(1.29 KB)
ðŸ“„ sax2listener.rb(3.61 KB)
ðŸ“„ security.rb(824 B)
ðŸ“„ source.rb(7.67 KB)
ðŸ“„ streamlistener.rb(3.84 KB)
ðŸ“„ syncenumerator.rb(716 B)
ðŸ“„ text.rb(13.85 KB)
ðŸ“„ undefinednamespaceexception.rb(244 B)
ðŸ“ validation
ðŸ“„ xmldecl.rb(2.91 KB)
ðŸ“„ xmltokens.rb(2.32 KB)
ðŸ“„ xpath.rb(3.42 KB)
ðŸ“„ xpath_parser.rb(28.59 KB)

Editing: xpath.rb

# frozen_string_literal: false
require_relative 'functions'
require_relative 'xpath_parser'

module REXML
  # Wrapper class.  Use this class to access the XPath functions.
  class XPath
    include Functions
    # A base Hash object, supposing to be used when initializing a
    # default empty namespaces set, but is currently unused.
    # TODO: either set the namespaces=EMPTY_HASH, or deprecate this.
    EMPTY_HASH = {}

# Finds and returns the first node that matches the supplied xpath.
    # element::
    #   The context element
    # path::
    #   The xpath to search for.  If not supplied or nil, returns the first
    #   node matching '*'.
    # namespaces::
    #   If supplied, a Hash which defines a namespace mapping.
    # variables::
    #   If supplied, a Hash which maps $variables in the query
    #   to values. This can be used to avoid XPath injection attacks
    #   or to automatically handle escaping string values.
    #
    #  XPath.first( node )
    #  XPath.first( doc, "//b"} )
    #  XPath.first( node, "a/x:b", { "x"=>"http://doofus" } )
    #  XPath.first( node, '/book/publisher/text()=$publisher', {}, {"publisher"=>"O'Reilly"})
    def XPath::first(element, path=nil, namespaces=nil, variables={}, options={})
      raise "The namespaces argument, if supplied, must be a hash object." unless namespaces.nil? or namespaces.kind_of?(Hash)
      raise "The variables argument, if supplied, must be a hash object." unless variables.kind_of?(Hash)
      parser = XPathParser.new(**options)
      parser.namespaces = namespaces
      parser.variables = variables
      path = "*" unless path
      element = [element] unless element.kind_of? Array
      parser.parse(path, element).flatten[0]
    end

# Iterates over nodes that match the given path, calling the supplied
    # block with the match.
    # element::
    #   The context element
    # path::
    #   The xpath to search for.  If not supplied or nil, defaults to '*'
    # namespaces::
    #   If supplied, a Hash which defines a namespace mapping
    # variables::
    #   If supplied, a Hash which maps $variables in the query
    #   to values. This can be used to avoid XPath injection attacks
    #   or to automatically handle escaping string values.
    #
    #  XPath.each( node ) { |el| ... }
    #  XPath.each( node, '/*[@attr='v']' ) { |el| ... }
    #  XPath.each( node, 'ancestor::x' ) { |el| ... }
    #  XPath.each( node, '/book/publisher/text()=$publisher', {}, {"publisher"=>"O'Reilly"}) \
    #    {|el| ... }
    def XPath::each(element, path=nil, namespaces=nil, variables={}, options={}, &block)
      raise "The namespaces argument, if supplied, must be a hash object." unless namespaces.nil? or namespaces.kind_of?(Hash)
      raise "The variables argument, if supplied, must be a hash object." unless variables.kind_of?(Hash)
      parser = XPathParser.new(**options)
      parser.namespaces = namespaces
      parser.variables = variables
      path = "*" unless path
      element = [element] unless element.kind_of? Array
      parser.parse(path, element).each( &block )
    end

# Returns an array of nodes matching a given XPath.
    def XPath::match(element, path=nil, namespaces=nil, variables={}, options={})
      parser = XPathParser.new(**options)
      parser.namespaces = namespaces
      parser.variables = variables
      path = "*" unless path
      element = [element] unless element.kind_of? Array
      parser.parse(path,element)
    end
  end
end

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