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Name	Size	Permission	Date
dtd	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
formatters	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
light	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
parsers	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
validation	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
attlistdecl.rb	1.89 KB	-rw-r--r--	2009-10-02 10:45
attribute.rb	5.5 KB	-rw-r--r--	2013-08-04 18:37
cdata.rb	1.54 KB	-rw-r--r--	2011-05-19 00:07
child.rb	2.63 KB	-rw-r--r--	2011-05-19 00:07
comment.rb	2.14 KB	-rw-r--r--	2011-05-19 00:07
doctype.rb	6.58 KB	-rw-r--r--	2010-12-07 12:10
document.rb	9.48 KB	-rw-r--r--	2014-11-13 13:36
element.rb	43.65 KB	-rw-r--r--	2013-04-26 13:56
encoding.rb	1.13 KB	-rw-r--r--	2012-11-06 00:49
entity.rb	5.53 KB	-rw-r--r--	2014-11-13 13:36
functions.rb	11.27 KB	-rw-r--r--	2011-05-13 17:54
instruction.rb	2.01 KB	-rw-r--r--	2009-10-02 10:45
namespace.rb	1.09 KB	-rw-r--r--	2009-10-02 10:45
node.rb	2.13 KB	-rw-r--r--	2011-05-19 00:07
output.rb	519 B	-rw-r--r--	2012-11-03 05:43
parent.rb	4.33 KB	-rw-r--r--	2010-01-31 06:55
parseexception.rb	1.22 KB	-rw-r--r--	2010-10-30 12:10
quickpath.rb	9.08 KB	-rw-r--r--	2011-05-19 00:07
rexml.rb	1.29 KB	-rw-r--r--	2013-02-27 12:24
sax2listener.rb	3.58 KB	-rw-r--r--	2013-08-11 10:08
security.rb	793 B	-rw-r--r--	2013-02-27 12:24
source.rb	7.6 KB	-rw-r--r--	2012-11-06 00:49
streamlistener.rb	3.81 KB	-rw-r--r--	2013-07-22 23:15
syncenumerator.rb	685 B	-rw-r--r--	2009-10-02 10:45
text.rb	13.74 KB	-rw-r--r--	2013-07-07 02:50
undefinednamespaceexception.rb	210 B	-rw-r--r--	2007-11-16 01:30
xmldecl.rb	2.68 KB	-rw-r--r--	2012-11-03 05:44
xmltokens.rb	526 B	-rw-r--r--	2010-04-05 21:08
xpath.rb	3.31 KB	-rw-r--r--	2011-05-18 21:19
xpath_parser.rb	25.7 KB	-rw-r--r--	2011-05-11 22:56

Rename

require 'rexml/functions'
require 'rexml/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={}
      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
      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={}, &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
      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={}
      parser = XPathParser.new
      parser.namespaces = namespaces
      parser.variables = variables
      path = "*" unless path
      element = [element] unless element.kind_of? Array
      parser.parse(path,element)
    end
  end
end