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?? attlistdecl.rb(1.79 KB)
?? attribute.rb(5.02 KB)
?? cdata.rb(1.44 KB)
?? child.rb(2.46 KB)
?? comment.rb(2 KB)
?? doctype.rb(6.64 KB)
?? document.rb(7.93 KB)
?? dtd
?? element.rb(43.24 KB)
?? encoding.rb(2.08 KB)
?? encodings
?? entity.rb(4.85 KB)
?? formatters
?? functions.rb(10.8 KB)
?? instruction.rb(1.9 KB)
?? light
?? namespace.rb(1018 B)
?? node.rb(1.93 KB)
?? output.rb(385 B)
?? parent.rb(4.4 KB)
?? parseexception.rb(1.2 KB)
?? parsers
?? quickpath.rb(7.65 KB)
?? rexml.rb(1.71 KB)
?? sax2listener.rb(3.45 KB)
?? source.rb(7.06 KB)
?? streamlistener.rb(3.71 KB)
?? syncenumerator.rb(721 B)
?? text.rb(11.15 KB)
?? undefinednamespaceexception.rb(210 B)
?? validation
?? xmldecl.rb(2.65 KB)
?? xmltokens.rb(506 B)
?? xpath.rb(2.39 KB)
?? xpath_parser.rb(25.15 KB)

Editing: text.rb

require 'rexml/rexml'
require 'rexml/entity'
require 'rexml/doctype'
require 'rexml/child'
require 'rexml/doctype'
require 'rexml/parseexception'

module REXML
  # Represents text nodes in an XML document
  class Text < Child
    include Comparable
    # The order in which the substitutions occur
    SPECIALS = [ /&(?!#?[\w-]+;)/u, /</u, />/u, /"/u, /'/u, /\r/u ]
    SUBSTITUTES = ['&amp;', '&lt;', '&gt;', '&quot;', '&apos;', '&#13;']
    # Characters which are substituted in written strings
    SLAICEPS = [ '<', '>', '"', "'", '&' ]
    SETUTITSBUS = [ /&lt;/u, /&gt;/u, /&quot;/u, /&apos;/u, /&amp;/u ]

# If +raw+ is true, then REXML leaves the value alone
    attr_accessor :raw

ILLEGAL = /(<|&(?!(#{Entity::NAME})|(#0*((?:\d+)|(?:x[a-fA-F0-9]+)));))/um
    NUMERICENTITY = /&#0*((?:\d+)|(?:x[a-fA-F0-9]+));/

# Constructor
    # +arg+ if a String, the content is set to the String.  If a Text,
    # the object is shallowly cloned.  
    #
    # +respect_whitespace+ (boolean, false) if true, whitespace is
    # respected
    #
    # +parent+ (nil) if this is a Parent object, the parent
    # will be set to this.  
    #
    # +raw+ (nil) This argument can be given three values.
    # If true, then the value of used to construct this object is expected to 
    # contain no unescaped XML markup, and REXML will not change the text. If 
    # this value is false, the string may contain any characters, and REXML will
    # escape any and all defined entities whose values are contained in the
    # text.  If this value is nil (the default), then the raw value of the 
    # parent will be used as the raw value for this node.  If there is no raw
    # value for the parent, and no value is supplied, the default is false.
    # Use this field if you have entities defined for some text, and you don't
    # want REXML to escape that text in output.
    #   Text.new( "<&", false, nil, false ) #-> "&lt;&amp;"
    #   Text.new( "&lt;&amp;", false, nil, false ) #-> "&amp;lt;&amp;amp;"
    #   Text.new( "<&", false, nil, true )  #-> Parse exception
    #   Text.new( "&lt;&amp;", false, nil, true )  #-> "&lt;&amp;"
    #   # Assume that the entity "s" is defined to be "sean"
    #   # and that the entity    "r" is defined to be "russell"
    #   Text.new( "sean russell" )          #-> "&s; &r;"
    #   Text.new( "sean russell", false, nil, true ) #-> "sean russell"
    #
    # +entity_filter+ (nil) This can be an array of entities to match in the
    # supplied text.  This argument is only useful if +raw+ is set to false.
    #   Text.new( "sean russell", false, nil, false, ["s"] ) #-> "&s; russell"
    #   Text.new( "sean russell", false, nil, true, ["s"] ) #-> "sean russell"
    # In the last example, the +entity_filter+ argument is ignored.
    #
    # +pattern+ INTERNAL USE ONLY
    def initialize(arg, respect_whitespace=false, parent=nil, raw=nil, 
      entity_filter=nil, illegal=ILLEGAL )

@raw = false

if parent
        super( parent )
        @raw = parent.raw 
      else
        @parent = nil
      end

@raw = raw unless raw.nil?
      @entity_filter = entity_filter
      @normalized = @unnormalized = nil

if arg.kind_of? String
        @string = arg.clone
        @string.squeeze!(" \n\t") unless respect_whitespace
      elsif arg.kind_of? Text
        @string = arg.to_s
        @raw = arg.raw
      elsif
        raise "Illegal argument of type #{arg.type} for Text constructor (#{arg})"
      end

@string.gsub!( /\r\n?/, "\n" )

# check for illegal characters
      if @raw
        if @string =~ illegal
          raise "Illegal character '#{$1}' in raw string \"#{@string}\""
        end
      end
    end

def node_type
      :text
    end

def empty?
      @string.size==0
    end

def clone
      return Text.new(self)
    end

# Appends text to this text node.  The text is appended in the +raw+ mode
    # of this text node.
    def <<( to_append )
      @string << to_append.gsub( /\r\n?/, "\n" )
    end

# +other+ a String or a Text
    # +returns+ the result of (to_s <=> arg.to_s)
    def <=>( other )
      to_s() <=> other.to_s
    end

REFERENCE = /#{Entity::REFERENCE}/
    # Returns the string value of this text node.  This string is always
    # escaped, meaning that it is a valid XML text node string, and all
    # entities that can be escaped, have been inserted.  This method respects
    # the entity filter set in the constructor.
    #   
    #   # Assume that the entity "s" is defined to be "sean", and that the 
    #   # entity "r" is defined to be "russell"
    #   t = Text.new( "< & sean russell", false, nil, false, ['s'] ) 
    #   t.to_s   #-> "&lt; &amp; &s; russell"
    #   t = Text.new( "< & &s; russell", false, nil, false ) 
    #   t.to_s   #-> "&lt; &amp; &s; russell"
    #   u = Text.new( "sean russell", false, nil, true )
    #   u.to_s   #-> "sean russell"
    def to_s
      return @string if @raw
      return @normalized if @normalized

doctype = nil
      if @parent
        doc = @parent.document
        doctype = doc.doctype if doc
      end

@normalized = Text::normalize( @string, doctype, @entity_filter )
    end

def inspect
      @string.inspect
    end

# Returns the string value of this text.  This is the text without
    # entities, as it might be used programmatically, or printed to the
    # console.  This ignores the 'raw' attribute setting, and any
    # entity_filter.
    #
    #   # Assume that the entity "s" is defined to be "sean", and that the 
    #   # entity "r" is defined to be "russell"
    #   t = Text.new( "< & sean russell", false, nil, false, ['s'] ) 
    #   t.value   #-> "< & sean russell"
    #   t = Text.new( "< & &s; russell", false, nil, false )
    #   t.value   #-> "< & sean russell"
    #   u = Text.new( "sean russell", false, nil, true )
    #   u.value   #-> "sean russell"
    def value
      @unnormalized if @unnormalized
      doctype = nil
      if @parent
        doc = @parent.document
        doctype = doc.doctype if doc
      end
      @unnormalized = Text::unnormalize( @string, doctype )
    end

# Sets the contents of this text node.  This expects the text to be 
    # unnormalized.  It returns self.
    #
    #   e = Element.new( "a" )
    #   e.add_text( "foo" )   # <a>foo</a>
    #   e[0].value = "bar"    # <a>bar</a>
    #   e[0].value = "<a>"    # <a>&lt;a&gt;</a>
    def value=( val )
      @string = val.gsub( /\r\n?/, "\n" )
      @unnormalized = nil
      @normalized = nil
      @raw = false
    end
 
     def wrap(string, width, addnewline=false)
       # Recursively wrap string at width.
       return string if string.length <= width
       place = string.rindex(' ', width) # Position in string with last ' ' before cutoff
       if addnewline then
         return "\n" + string[0,place] + "\n" + wrap(string[place+1..-1], width)
       else
         return string[0,place] + "\n" + wrap(string[place+1..-1], width)
       end
     end

def indent_text(string, level=1, style="\t", indentfirstline=true)
      return string if level < 0
      new_string = ''
      string.each { |line|
        indent_string = style * level
        new_line = (indent_string + line).sub(/[\s]+$/,'')
        new_string << new_line
      }
      new_string.strip! unless indentfirstline
      return new_string
    end
 
    # == DEPRECATED
    # See REXML::Formatters
    #
    def write( writer, indent=-1, transitive=false, ie_hack=false ) 
      Kernel.warn("#{self.class.name}.write is deprecated.  See REXML::Formatters")
      formatter = if indent > -1
          REXML::Formatters::Pretty.new( indent )
        else
          REXML::Formatters::Default.new
        end
      formatter.write( self, writer )
    end

# FIXME
    # This probably won't work properly
    def xpath
      path = @parent.xpath
      path += "/text()"
      return path
    end

# Writes out text, substituting special characters beforehand.
    # +out+ A String, IO, or any other object supporting <<( String )
    # +input+ the text to substitute and the write out
    #
    #   z=utf8.unpack("U*")
    #   ascOut=""
    #   z.each{|r|
    #     if r <  0x100
    #       ascOut.concat(r.chr)
    #     else
    #       ascOut.concat(sprintf("&#x%x;", r))
    #     end
    #   }
    #   puts ascOut
    def write_with_substitution out, input
      copy = input.clone
      # Doing it like this rather than in a loop improves the speed
      copy.gsub!( SPECIALS[0], SUBSTITUTES[0] )
      copy.gsub!( SPECIALS[1], SUBSTITUTES[1] )
      copy.gsub!( SPECIALS[2], SUBSTITUTES[2] )
      copy.gsub!( SPECIALS[3], SUBSTITUTES[3] )
      copy.gsub!( SPECIALS[4], SUBSTITUTES[4] )
      copy.gsub!( SPECIALS[5], SUBSTITUTES[5] )
      out << copy
    end

# Reads text, substituting entities
    def Text::read_with_substitution( input, illegal=nil )
      copy = input.clone

if copy =~ illegal
        raise ParseException.new( "malformed text: Illegal character #$& in \"#{copy}\"" )
      end if illegal
      
      copy.gsub!( /\r\n?/, "\n" )
      if copy.include? ?&
        copy.gsub!( SETUTITSBUS[0], SLAICEPS[0] )
        copy.gsub!( SETUTITSBUS[1], SLAICEPS[1] )
        copy.gsub!( SETUTITSBUS[2], SLAICEPS[2] )
        copy.gsub!( SETUTITSBUS[3], SLAICEPS[3] )
        copy.gsub!( SETUTITSBUS[4], SLAICEPS[4] )
        copy.gsub!( /&#0*((?:\d+)|(?:x[a-f0-9]+));/ ) {|m|
          m=$1
          #m='0' if m==''
          m = "0#{m}" if m[0] == ?x
          [Integer(m)].pack('U*')
        }
      end
      copy
    end

EREFERENCE = /&(?!#{Entity::NAME};)/
    # Escapes all possible entities
    def Text::normalize( input, doctype=nil, entity_filter=nil )
      copy = input.to_s
      # Doing it like this rather than in a loop improves the speed
      #copy = copy.gsub( EREFERENCE, '&amp;' )
      copy = copy.gsub( "&", "&amp;" )
      if doctype
        # Replace all ampersands that aren't part of an entity
        doctype.entities.each_value do |entity|
          copy = copy.gsub( entity.value, 
            "&#{entity.name};" ) if entity.value and 
              not( entity_filter and entity_filter.include?(entity) )
        end
      else
        # Replace all ampersands that aren't part of an entity
        DocType::DEFAULT_ENTITIES.each_value do |entity|
          copy = copy.gsub(entity.value, "&#{entity.name};" )
        end
      end
      copy
    end

# Unescapes all possible entities
    def Text::unnormalize( string, doctype=nil, filter=nil, illegal=nil )
      sum = 0
      string.gsub( /\r\n?/, "\n" ).gsub( REFERENCE ) {
        s = Text.expand($&, doctype, filter)
        if sum + s.bytesize > REXML.entity_expansion_text_limit
          raise "entity expansion has grown too large"
        else
          sum += s.bytesize
        end
        s
      }
    end

def Text.expand(ref, doctype, filter)
      if ref[1] == ?#
        if ref[2] == ?x
          [ref[3...-1].to_i(16)].pack('U*')
        else
          [ref[2...-1].to_i].pack('U*')
        end
      elsif ref == '&amp;'
        '&'
      elsif filter and filter.include?( ref[1...-1] )
        ref
      elsif doctype
        doctype.entity( ref[1...-1] ) or ref
      else
        entity_value = DocType::DEFAULT_ENTITIES[ ref[1...-1] ]
        entity_value ? entity_value.value : ref
      end
    end
  end
end

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