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#--
# Author:: Daniel DeLeo (<dan@chef.io>)
# Copyright:: Copyright 2009-2016, Chef Software Inc.
# Copyright:: Copyright 2005-2016, Sam Ruby
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#--
# Portions of this code are adapted from Sam Ruby's xchar.rb
# http://intertwingly.net/stories/2005/09/28/xchar.rb
#
# Such code appears here under Sam's original MIT license, while portions of
# this file are covered by the above Apache License. For a completely MIT
# licensed version, please see Sam's original.
#
# Thanks, Sam!
#
# Copyright 2005-2016, Sam Ruby
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
require "chef/log"
begin
require "fast_xs"
rescue LoadError
Chef::Log.info "The fast_xs gem is not installed, slower pure ruby XML escaping will be used."
end
class Chef
module Mixin
module XMLEscape
module PureRuby
extend self
CP1252 = {
128 => 8364, # euro sign
130 => 8218, # single low-9 quotation mark
131 => 402, # latin small letter f with hook
132 => 8222, # double low-9 quotation mark
133 => 8230, # horizontal ellipsis
134 => 8224, # dagger
135 => 8225, # double dagger
136 => 710, # modifier letter circumflex accent
137 => 8240, # per mille sign
138 => 352, # latin capital letter s with caron
139 => 8249, # single left-pointing angle quotation mark
140 => 338, # latin capital ligature oe
142 => 381, # latin capital letter z with caron
145 => 8216, # left single quotation mark
146 => 8217, # right single quotation mark
147 => 8220, # left double quotation mark
148 => 8221, # right double quotation mark
149 => 8226, # bullet
150 => 8211, # en dash
151 => 8212, # em dash
152 => 732, # small tilde
153 => 8482, # trade mark sign
154 => 353, # latin small letter s with caron
155 => 8250, # single right-pointing angle quotation mark
156 => 339, # latin small ligature oe
158 => 382, # latin small letter z with caron
159 => 376 # latin capital letter y with diaeresis
}
# http://www.w3.org/TR/REC-xml/#dt-chardata
PREDEFINED = {
38 => "&", # ampersand
60 => "<", # left angle bracket
62 => ">" # right angle bracket
}
# http://www.w3.org/TR/REC-xml/#charsets
VALID = [[0x9, 0xA, 0xD], (0x20..0xD7FF),
(0xE000..0xFFFD), (0x10000..0x10FFFF)]
def xml_escape(unescaped_str)
begin
unescaped_str.unpack("U*").map {|char| xml_escape_char!(char)}.join
rescue
unescaped_str.unpack("C*").map {|char| xml_escape_char!(char)}.join
end
end
private
def xml_escape_char!(char)
char = CP1252[char] || char
char = 42 unless VALID.detect {|range| range.include? char}
char = PREDEFINED[char] || (char<128 ? char.chr : "&##{char};")
end
end
module FastXS
extend self
def xml_escape(string)
string.fast_xs
end
end
if "strings".respond_to?(:fast_xs)
include FastXS
extend FastXS
else
include PureRuby
extend PureRuby
end
end
end
end
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