/usr/lib/ruby/1.8/rexml/document.rb is in libruby1.8 1.8.7.352-2ubuntu1.6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 | require "rexml/element"
require "rexml/xmldecl"
require "rexml/source"
require "rexml/comment"
require "rexml/doctype"
require "rexml/instruction"
require "rexml/rexml"
require "rexml/parseexception"
require "rexml/output"
require "rexml/parsers/baseparser"
require "rexml/parsers/streamparser"
require "rexml/parsers/treeparser"
module REXML
# Represents a full XML document, including PIs, a doctype, etc. A
# Document has a single child that can be accessed by root().
# Note that if you want to have an XML declaration written for a document
# you create, you must add one; REXML documents do not write a default
# declaration for you. See |DECLARATION| and |write|.
class Document < Element
# A convenient default XML declaration. If you want an XML declaration,
# the easiest way to add one is mydoc << Document::DECLARATION
# +DEPRECATED+
# Use: mydoc << XMLDecl.default
DECLARATION = XMLDecl.default
# Constructor
# @param source if supplied, must be a Document, String, or IO.
# Documents have their context and Element attributes cloned.
# Strings are expected to be valid XML documents. IOs are expected
# to be sources of valid XML documents.
# @param context if supplied, contains the context of the document;
# this should be a Hash.
def initialize( source = nil, context = {} )
@entity_expansion_count = 0
super()
@context = context
return if source.nil?
if source.kind_of? Document
@context = source.context
super source
else
build( source )
end
end
def node_type
:document
end
# Should be obvious
def clone
Document.new self
end
# According to the XML spec, a root node has no expanded name
def expanded_name
''
#d = doc_type
#d ? d.name : "UNDEFINED"
end
alias :name :expanded_name
# We override this, because XMLDecls and DocTypes must go at the start
# of the document
def add( child )
if child.kind_of? XMLDecl
@children.unshift child
child.parent = self
elsif child.kind_of? DocType
# Find first Element or DocType node and insert the decl right
# before it. If there is no such node, just insert the child at the
# end. If there is a child and it is an DocType, then replace it.
insert_before_index = 0
@children.find { |x|
insert_before_index += 1
x.kind_of?(Element) || x.kind_of?(DocType)
}
if @children[ insert_before_index ] # Not null = not end of list
if @children[ insert_before_index ].kind_of DocType
@children[ insert_before_index ] = child
else
@children[ index_before_index-1, 0 ] = child
end
else # Insert at end of list
@children[insert_before_index] = child
end
child.parent = self
else
rv = super
raise "attempted adding second root element to document" if @elements.size > 1
rv
end
end
alias :<< :add
def add_element(arg=nil, arg2=nil)
rv = super
raise "attempted adding second root element to document" if @elements.size > 1
rv
end
# @return the root Element of the document, or nil if this document
# has no children.
def root
elements[1]
#self
#@children.find { |item| item.kind_of? Element }
end
# @return the DocType child of the document, if one exists,
# and nil otherwise.
def doctype
@children.find { |item| item.kind_of? DocType }
end
# @return the XMLDecl of this document; if no XMLDecl has been
# set, the default declaration is returned.
def xml_decl
rv = @children[0]
return rv if rv.kind_of? XMLDecl
rv = @children.unshift(XMLDecl.default)[0]
end
# @return the XMLDecl version of this document as a String.
# If no XMLDecl has been set, returns the default version.
def version
xml_decl().version
end
# @return the XMLDecl encoding of this document as a String.
# If no XMLDecl has been set, returns the default encoding.
def encoding
xml_decl().encoding
end
# @return the XMLDecl standalone value of this document as a String.
# If no XMLDecl has been set, returns the default setting.
def stand_alone?
xml_decl().stand_alone?
end
# Write the XML tree out, optionally with indent. This writes out the
# entire XML document, including XML declarations, doctype declarations,
# and processing instructions (if any are given).
#
# A controversial point is whether Document should always write the XML
# declaration (<?xml version='1.0'?>) whether or not one is given by the
# user (or source document). REXML does not write one if one was not
# specified, because it adds unnecessary bandwidth to applications such
# as XML-RPC.
#
# See also the classes in the rexml/formatters package for the proper way
# to change the default formatting of XML output
#
# _Examples_
# Document.new("<a><b/></a>").serialize
#
# output_string = ""
# tr = Transitive.new( output_string )
# Document.new("<a><b/></a>").serialize( tr )
#
# output::
# output an object which supports '<< string'; this is where the
# document will be written.
# indent::
# An integer. If -1, no indenting will be used; otherwise, the
# indentation will be twice this number of spaces, and children will be
# indented an additional amount. For a value of 3, every item will be
# indented 3 more levels, or 6 more spaces (2 * 3). Defaults to -1
# trans::
# If transitive is true and indent is >= 0, then the output will be
# pretty-printed in such a way that the added whitespace does not affect
# the absolute *value* of the document -- that is, it leaves the value
# and number of Text nodes in the document unchanged.
# ie_hack::
# Internet Explorer is the worst piece of crap to have ever been
# written, with the possible exception of Windows itself. Since IE is
# unable to parse proper XML, we have to provide a hack to generate XML
# that IE's limited abilities can handle. This hack inserts a space
# before the /> on empty tags. Defaults to false
def write( output=$stdout, indent=-1, trans=false, ie_hack=false )
if xml_decl.encoding != "UTF-8" && !output.kind_of?(Output)
output = Output.new( output, xml_decl.encoding )
end
formatter = if indent > -1
if trans
require "rexml/formatters/transitive"
REXML::Formatters::Transitive.new( indent, ie_hack )
else
REXML::Formatters::Pretty.new( indent, ie_hack )
end
else
REXML::Formatters::Default.new( ie_hack )
end
formatter.write( self, output )
end
def Document::parse_stream( source, listener )
Parsers::StreamParser.new( source, listener ).parse
end
@@entity_expansion_limit = 10_000
# Set the entity expansion limit. By default the limit is set to 10000.
def Document::entity_expansion_limit=( val )
@@entity_expansion_limit = val
end
# Get the entity expansion limit. By default the limit is set to 10000.
def Document::entity_expansion_limit
return @@entity_expansion_limit
end
@@entity_expansion_text_limit = 10_240
# Set the entity expansion limit. By default the limit is set to 10240.
def Document::entity_expansion_text_limit=( val )
@@entity_expansion_text_limit = val
end
# Get the entity expansion limit. By default the limit is set to 10000.
def Document::entity_expansion_text_limit
return @@entity_expansion_text_limit
end
attr_reader :entity_expansion_count
def record_entity_expansion
@entity_expansion_count += 1
if @entity_expansion_count > @@entity_expansion_limit
raise "number of entity expansions exceeded, processing aborted."
end
end
def document
self
end
private
def build( source )
Parsers::TreeParser.new( source, self ).parse
end
end
end
|