JezK

Edit File: parse_options.rb

# frozen_string_literal: true

module Nokogiri
  module XML
    ###
    # Parse options for passing to Nokogiri.XML or Nokogiri.HTML
    #
    # == Building combinations of parse options
    # You can build your own combinations of these parse options by using any of the following methods:
    # *Note*: All examples attempt to set the +RECOVER+ & +NOENT+ options.
    # [Ruby's bitwise operators] You can use the Ruby bitwise operators to set various combinations.
    #   Nokogiri.XML('<content>Chapter 1</content', nil, nil, Nokogiri::XML::ParseOptions.new((1 << 0) | (1 << 1)))
    # [Method chaining] Every option has an equivalent method in lowercase. You can chain these methods together to set various combinations.
    #   Nokogiri.XML('<content>Chapter 1</content', nil, nil, Nokogiri::XML::ParseOptions.new.recover.noent)
    # [Using Ruby Blocks] You can also setup parse combinations in the block passed to Nokogiri.XML or Nokogiri.HTML
    #   Nokogiri.XML('<content>Chapter 1</content') {|config| config.recover.noent}
    #
    # == Removing particular parse options
    # You can also remove options from an instance of +ParseOptions+ dynamically.
    # Every option has an equivalent <code>no{option}</code> method in lowercase. You can call these methods on an instance of +ParseOptions+ to remove the option.
    # Note that this is not available for +STRICT+.
    #
    #   # Setting the RECOVER & NOENT options...
    #   options = Nokogiri::XML::ParseOptions.new.recover.noent
    #   # later...
    #   options.norecover # Removes the Nokogiri::XML::ParseOptions::RECOVER option
    #   options.nonoent # Removes the Nokogiri::XML::ParseOptions::NOENT option
    #
    class ParseOptions
      # Strict parsing
      STRICT      = 0
      # Recover from errors
      RECOVER     = 1 << 0
      # Substitute entities
      NOENT       = 1 << 1
      # Load external subsets
      DTDLOAD     = 1 << 2
      # Default DTD attributes
      DTDATTR     = 1 << 3
      # validate with the DTD
      DTDVALID    = 1 << 4
      # suppress error reports
      NOERROR     = 1 << 5
      # suppress warning reports
      NOWARNING   = 1 << 6
      # pedantic error reporting
      PEDANTIC    = 1 << 7
      # remove blank nodes
      NOBLANKS    = 1 << 8
      # use the SAX1 interface internally
      SAX1        = 1 << 9
      # Implement XInclude substitution
      XINCLUDE    = 1 << 10
      # Forbid network access. Recommended for dealing with untrusted documents.
      NONET       = 1 << 11
      # Do not reuse the context dictionary
      NODICT      = 1 << 12
      # remove redundant namespaces declarations
      NSCLEAN     = 1 << 13
      # merge CDATA as text nodes
      NOCDATA     = 1 << 14
      # do not generate XINCLUDE START/END nodes
      NOXINCNODE  = 1 << 15
      # compact small text nodes; no modification of the tree allowed afterwards (will possibly crash if you try to modify the tree)
      COMPACT     = 1 << 16
      # parse using XML-1.0 before update 5
      OLD10       = 1 << 17
      # do not fixup XINCLUDE xml:base uris
      NOBASEFIX   = 1 << 18
      # relax any hardcoded limit from the parser
      HUGE        = 1 << 19
      # line numbers stored as long int (instead of a short int)
      BIG_LINES   = 1 << 22

attr_accessor :options

def initialize(options = STRICT)
        @options = options
      end

constants.each do |constant|
        next if constant.to_sym == :STRICT

class_eval %{
          def #{constant.downcase}
            @options |= #{constant}
            self
          end

def no#{constant.downcase}
            @options &= ~#{constant}
            self
          end

def #{constant.downcase}?
            #{constant} & @options == #{constant}
          end
        }
      end

def strict
        @options &= ~RECOVER
        self
      end

def strict?
        @options & RECOVER == STRICT
      end

def ==(other)
        other.to_i == to_i
      end

alias_method :to_i, :options

def inspect
        options = []
        self.class.constants.each do |k|
          options << k.downcase if send(:"#{k.downcase}?")
        end
        super.sub(/>$/, " " + options.join(", ") + ">")
      end
    end
  end
end

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