/usr/lib/ruby/1.9.1/rexml/text.rb is in libruby1.9.1 1.9.3.0-1ubuntu1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 | 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 = ['&', '<', '>', '"', ''', ' ']
# Characters which are substituted in written strings
SLAICEPS = [ '<', '>', '"', "'", '&' ]
SETUTITSBUS = [ /</u, />/u, /"/u, /'/u, /&/u ]
# If +raw+ is true, then REXML leaves the value alone
attr_accessor :raw
NEEDS_A_SECOND_CHECK = /(<|&((#{Entity::NAME});|(#0*((?:\d+)|(?:x[a-fA-F0-9]+)));)?)/um
NUMERICENTITY = /�*((?:\d+)|(?:x[a-fA-F0-9]+));/
VALID_CHAR = [
0x9, 0xA, 0xD,
(0x20..0xD7FF),
(0xE000..0xFFFD),
(0x10000..0x10FFFF)
]
if String.method_defined? :encode
VALID_XML_CHARS = Regexp.new('^['+
VALID_CHAR.map { |item|
case item
when Fixnum
[item].pack('U').force_encoding('utf-8')
when Range
[item.first, '-'.ord, item.last].pack('UUU').force_encoding('utf-8')
end
}.join +
']*$')
else
VALID_XML_CHARS = /^(
[\x09\x0A\x0D\x20-\x7E] # ASCII
| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
| [\xE1-\xEC\xEE][\x80-\xBF]{2} # straight 3-byte
| \xEF[\x80-\xBE]{2} #
| \xEF\xBF[\x80-\xBD] # excluding U+fffe and U+ffff
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
)*$/nx;
end
# 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 ) #-> "<&"
# Text.new( "<&", false, nil, false ) #-> "&lt;&amp;"
# Text.new( "<&", false, nil, true ) #-> Parse exception
# Text.new( "<&", false, nil, true ) #-> "<&"
# # 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.
#
# +illegal+ INTERNAL USE ONLY
def initialize(arg, respect_whitespace=false, parent=nil, raw=nil,
entity_filter=nil, illegal=NEEDS_A_SECOND_CHECK )
@raw = false
@parent = nil
if parent
super( parent )
@raw = parent.raw
end
@raw = raw unless raw.nil?
@entity_filter = entity_filter
@normalized = @unnormalized = nil
if arg.kind_of? String
@string = arg.dup
@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" )
Text.check(@string, illegal, doctype) if @raw
end
def parent= parent
super(parent)
Text.check(@string, NEEDS_A_SECOND_CHECK, doctype) if @raw and @parent
end
# check for illegal characters
def Text.check string, pattern, doctype
# illegal anywhere
if string !~ VALID_XML_CHARS
if String.method_defined? :encode
string.chars.each do |c|
case c.ord
when *VALID_CHAR
else
raise "Illegal character #{c.inspect} in raw string \"#{string}\""
end
end
else
string.scan(/[\x00-\x7F]|[\x80-\xBF][\xC0-\xF0]*|[\xC0-\xF0]/n) do |c|
case c.unpack('U')
when *VALID_CHAR
else
raise "Illegal character #{c.inspect} in raw string \"#{string}\""
end
end
end
end
# context sensitive
string.scan(pattern) do
if $1[-1] != ?;
raise "Illegal character '#{$1}' in raw string \"#{string}\""
elsif $1[0] == ?&
if $5 and $5[0] == ?#
case ($5[1] == ?x ? $5[2..-1].to_i(16) : $5[1..-1].to_i)
when *VALID_CHAR
else
raise "Illegal character '#{$1}' in raw string \"#{string}\""
end
# FIXME: below can't work but this needs API change.
# elsif @parent and $3 and !SUBSTITUTES.include?($1)
# if !doctype or !doctype.entities.has_key?($3)
# raise "Undeclared entity '#{$1}' in raw string \"#{string}\""
# end
end
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
def doctype
if @parent
doc = @parent.document
doc.doctype if doc
end
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 #-> "< & &s; russell"
# t = Text.new( "< & &s; russell", false, nil, false )
# t.to_s #-> "< & &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
@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
return @unnormalized if @unnormalized
@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><a></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 { |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!( /�*((?:\d+)|(?:x[a-f0-9]+));/ ) {
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, '&' )
copy = copy.gsub( "&", "&" )
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 )
string.gsub( /\r\n?/, "\n" ).gsub( REFERENCE ) {
ref = $&
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 == '&'
'&'
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
|