instiki/vendor/plugins/HTML5lib/lib/html5/tokenizer.rb

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require 'html5/constants'
require 'html5/inputstream'
module HTML5
# This class takes care of tokenizing HTML.
#
# * @current_token
# Holds the token that is currently being processed.
#
# * @state
# Holds a reference to the method to be invoked... XXX
#
# * @states
# Holds a mapping between states and methods that implement the state.
#
# * @stream
# Points to HTMLInputStream object.
class HTMLTokenizer
attr_accessor :content_model_flag, :current_token
attr_reader :stream
# XXX need to fix documentation
def initialize(stream, options = {})
@stream = HTMLInputStream.new(stream, options)
# Setup the initial tokenizer state
@content_model_flag = :PCDATA
@state = :data_state
@escapeFlag = false
@lastFourChars = []
# The current token being created
@current_token = nil
# Tokens to be processed.
@token_queue = []
@lowercase_element_name = options[:lowercase_element_name] != false
@lowercase_attr_name = options[:lowercase_attr_name] != false
end
# This is where the magic happens.
#
# We do our usually processing through the states and when we have a token
# to return we yield the token which pauses processing until the next token
# is requested.
def each
@token_queue = []
# Start processing. When EOF is reached @state will return false
# instead of true and the loop will terminate.
while send @state
yield :type => :ParseError, :data => @stream.errors.shift until @stream.errors.empty?
yield @token_queue.shift until @token_queue.empty?
end
end
# Below are various helper functions the tokenizer states use worked out.
# If the next character is a '>', convert the current_token into
# an EmptyTag
def process_solidus_in_tag
# We need to consume another character to make sure it's a ">"
data = @stream.char
if @current_token[:type] == :StartTag and data == ">"
@current_token[:type] = :EmptyTag
else
@token_queue << {:type => :ParseError, :data => "incorrectly-placed-solidus"}
end
# The character we just consumed need to be put back on the stack so it
# doesn't get lost...
@stream.unget(data)
end
# This function returns either U+FFFD or the character based on the
# decimal or hexadecimal representation. It also discards ";" if present.
# If not present @token_queue << {:type => :ParseError}" is invoked.
def consume_number_entity(isHex)
# XXX More need to be done here. For instance, #13 should prolly be
# converted to #10 so we don't get \r (#13 is \r right?) in the DOM and
# such. Thoughts on this appreciated.
allowed = DIGITS
radix = 10
if isHex
allowed = HEX_DIGITS
radix = 16
end
char_stack = []
# Consume all the characters that are in range while making sure we
# don't hit an EOF.
c = @stream.char
while allowed.include?(c) and c != :EOF
char_stack.push(c)
c = @stream.char
end
# Convert the set of characters consumed to an int.
charAsInt = char_stack.join('').to_i(radix)
if charAsInt == 13
@token_queue << {:type => :ParseError, :data => "incorrect-cr-newline-entity"}
charAsInt = 10
elsif (128..159).include? charAsInt
# If the integer is between 127 and 160 (so 128 and bigger and 159
# and smaller) we need to do the "windows trick".
@token_queue << {:type => :ParseError, :data => "illegal-windows-1252-entity"}
charAsInt = ENTITIES_WINDOWS1252[charAsInt - 128]
end
if 0 < charAsInt and charAsInt <= 1114111 and not (55296 <= charAsInt and charAsInt <= 57343)
char = [charAsInt].pack('U')
else
char = [0xFFFD].pack('U')
@token_queue << {:type => :ParseError, :data => "cant-convert-numeric-entity", :datavars => {"charAsInt" => charAsInt}}
end
# Discard the ; if present. Otherwise, put it back on the queue and
# invoke parse_error on parser.
if c != ";"
@token_queue << {:type => :ParseError, :data => "numeric-entity-without-semicolon"}
@stream.unget(c)
end
return char
end
def consume_entity(from_attribute=false)
char = nil
char_stack = [@stream.char]
if SPACE_CHARACTERS.include?(char_stack[0]) or [:EOF, '<', '&'].include?(char_stack[0])
@stream.unget(char_stack)
elsif char_stack[0] == '#'
# We might have a number entity here.
char_stack += [@stream.char, @stream.char]
if char_stack[0 .. 1].include? :EOF
# If we reach the end of the file put everything up to :EOF
# back in the queue
char_stack = char_stack[0...char_stack.index(:EOF)]
@stream.unget(char_stack)
@token_queue << {:type => :ParseError, :data => "expected-numeric-entity-but-got-eof"}
else
if char_stack[1].downcase == "x" and HEX_DIGITS.include? char_stack[2]
# Hexadecimal entity detected.
@stream.unget(char_stack[2])
char = consume_number_entity(true)
elsif DIGITS.include? char_stack[1]
# Decimal entity detected.
@stream.unget(char_stack[1..-1])
char = consume_number_entity(false)
else
# No number entity detected.
@stream.unget(char_stack)
@token_queue << {:type => :ParseError, :data => "expected-numeric-entity"}
end
end
else
# At this point in the process might have named entity. Entities
# are stored in the global variable "entities".
#
# Consume characters and compare to these to a substring of the
# entity names in the list until the substring no longer matches.
filteredEntityList = ENTITIES.keys
filteredEntityList.reject! {|e| e[0].chr != char_stack[0]}
entityName = nil
# Try to find the longest entity the string will match to take care
# of &noti for instance.
while char_stack.last != :EOF
name = char_stack.join('')
if filteredEntityList.any? {|e| e[0...name.length] == name}
filteredEntityList.reject! {|e| e[0...name.length] != name}
char_stack.push(@stream.char)
else
break
end
if ENTITIES.include? name
entityName = name
break if entityName[-1] == ';'
end
end
if entityName != nil
char = ENTITIES[entityName]
# Check whether or not the last character returned can be
# discarded or needs to be put back.
if entityName[-1] != ?;
@token_queue << {:type => :ParseError, :data => "named-entity-without-semicolon"}
end
if entityName[-1] != ";" and from_attribute and
(ASCII_LETTERS.include?(char_stack[entityName.length]) or
DIGITS.include?(char_stack[entityName.length]))
@stream.unget(char_stack)
char = '&'
else
@stream.unget(char_stack[entityName.length..-1])
end
else
@token_queue << {:type => :ParseError, :data => "expected-named-entity"}
@stream.unget(char_stack)
end
end
return char
end
# This method replaces the need for "entityInAttributeValueState".
def process_entity_in_attribute
entity = consume_entity()
if entity
@current_token[:data][-1][1] += entity
else
@current_token[:data][-1][1] += "&"
end
end
# This method is a generic handler for emitting the tags. It also sets
# the state to "data" because that's what's needed after a token has been
# emitted.
def emit_current_token
# Add token to the queue to be yielded
token = @current_token
if [:StartTag, :EndTag, :EmptyTag].include?(token[:type])
if @lowercase_element_name
token[:name] = token[:name].downcase
end
@token_queue << token
@state = :data_state
end
end
# Below are the various tokenizer states worked out.
# XXX AT Perhaps we should have Hixie run some evaluation on billions of
# documents to figure out what the order of the various if and elsif
# statements should be.
def data_state
data = @stream.char
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if @content_model_flag == :CDATA or @content_model_flag == :RCDATA
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@lastFourChars << data
@lastFourChars.shift if @lastFourChars.length > 4
end
if data == "&" and [:PCDATA,:RCDATA].include?(@content_model_flag) and !@escapeFlag
@state = :entity_data_state
elsif data == "-" && [:CDATA, :RCDATA].include?(@content_model_flag) && !@escapeFlag && @lastFourChars.join('') == "<!--"
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@escapeFlag = true
@token_queue << {:type => :Characters, :data => data}
elsif data == "<" and !@escapeFlag and
[:PCDATA,:CDATA,:RCDATA].include?(@content_model_flag)
@state = :tag_open_state
elsif data == ">" and @escapeFlag and
[:CDATA,:RCDATA].include?(@content_model_flag) and
@lastFourChars[1..-1].join('') == "-->"
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@escapeFlag = false
@token_queue << {:type => :Characters, :data => data}
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elsif data == :EOF
# Tokenization ends.
return false
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elsif SPACE_CHARACTERS.include? data
# Directly after emitting a token you switch back to the "data
# state". At that point SPACE_CHARACTERS are important so they are
# emitted separately.
# XXX need to check if we don't need a special "spaces" flag on
# characters.
@token_queue << {:type => :SpaceCharacters, :data => data + @stream.chars_until(SPACE_CHARACTERS, true)}
else
@token_queue << {:type => :Characters, :data => data + @stream.chars_until(%w[& < > -])}
end
return true
end
def entity_data_state
entity = consume_entity
if entity
@token_queue << {:type => :Characters, :data => entity}
else
@token_queue << {:type => :Characters, :data => "&"}
end
@state = :data_state
return true
end
def tag_open_state
data = @stream.char
if @content_model_flag == :PCDATA
if data == "!"
@state = :markup_declaration_open_state
elsif data == "/"
@state = :close_tag_open_state
elsif data != :EOF and ASCII_LETTERS.include? data
@current_token = {:type => :StartTag, :name => data, :data => []}
@state = :tag_name_state
elsif data == ">"
# XXX In theory it could be something besides a tag name. But
# do we really care?
@token_queue << {:type => :ParseError, :data => "expected-tag-name-but-got-right-bracket"}
@token_queue << {:type => :Characters, :data => "<>"}
@state = :data_state
elsif data == "?"
# XXX In theory it could be something besides a tag name. But
# do we really care?
@token_queue.push({:type => :ParseError, :data => "expected-tag-name-but-got-question-mark"})
@stream.unget(data)
@state = :bogus_comment_state
else
# XXX
@token_queue << {:type => :ParseError, :data => "expected-tag-name"}
@token_queue << {:type => :Characters, :data => "<"}
@stream.unget(data)
@state = :data_state
end
else
# We know the content model flag is set to either RCDATA or CDATA
# now because this state can never be entered with the PLAINTEXT
# flag.
if data == "/"
@state = :close_tag_open_state
else
@token_queue << {:type => :Characters, :data => "<"}
@stream.unget(data)
@state = :data_state
end
end
return true
end
def close_tag_open_state
if (@content_model_flag == :RCDATA or @content_model_flag == :CDATA)
if @current_token
char_stack = []
# So far we know that "</" has been consumed. We now need to know
# whether the next few characters match the name of last emitted
# start tag which also happens to be the current_token. We also need
# to have the character directly after the characters that could
# match the start tag name.
(@current_token[:name].length + 1).times do
char_stack.push(@stream.char)
# Make sure we don't get hit by :EOF
break if char_stack[-1] == :EOF
end
# Since this is just for checking. We put the characters back on
# the stack.
@stream.unget(char_stack)
end
if @current_token and
@current_token[:name].downcase ==
char_stack[0...-1].join('').downcase and
(SPACE_CHARACTERS + [">", "/", "<", :EOF]).include? char_stack[-1]
# Because the characters are correct we can safely switch to
# PCDATA mode now. This also means we don't have to do it when
# emitting the end tag token.
@content_model_flag = :PCDATA
else
@token_queue << {:type => :Characters, :data => "</"}
@state = :data_state
# Need to return here since we don't want the rest of the
# method to be walked through.
return true
end
end
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data = @stream.char
if data == :EOF
@token_queue << {:type => :ParseError, :data => "expected-closing-tag-but-got-eof"}
@token_queue << {:type => :Characters, :data => "</"}
@state = :data_state
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elsif ASCII_LETTERS.include? data
@current_token = {:type => :EndTag, :name => data, :data => []}
@state = :tag_name_state
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elsif data == ">"
@token_queue << {:type => :ParseError, :data => "expected-closing-tag-but-got-right-bracket"}
@state = :data_state
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else
# XXX data can be _'_...
@token_queue << {:type => :ParseError, :data => "expected-closing-tag-but-got-char", :datavars => {:data => data}}
@stream.unget(data)
@state = :bogus_comment_state
end
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return true
end
def tag_name_state
data = @stream.char
if SPACE_CHARACTERS.include? data
@state = :before_attribute_name_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-tag-name"}
emit_current_token
elsif ASCII_LETTERS.include? data
@current_token[:name] += data + @stream.chars_until(ASCII_LETTERS, true)
elsif data == ">"
emit_current_token
elsif data == "/"
process_solidus_in_tag
@state = :before_attribute_name_state
else
@current_token[:name] += data
end
return true
end
def before_attribute_name_state
data = @stream.char
if SPACE_CHARACTERS.include? data
@stream.chars_until(SPACE_CHARACTERS, true)
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "expected-attribute-name-but-got-eof"}
emit_current_token
elsif ASCII_LETTERS.include? data
@current_token[:data].push([data, ""])
@state = :attribute_name_state
elsif data == ">"
emit_current_token
elsif data == "/"
process_solidus_in_tag
else
@current_token[:data].push([data, ""])
@state = :attribute_name_state
end
return true
end
def attribute_name_state
data = @stream.char
leavingThisState = true
emitToken = false
if data == "="
@state = :before_attribute_value_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-attribute-name"}
@state = :data_state
emitToken = true
elsif ASCII_LETTERS.include? data
@current_token[:data][-1][0] += data + @stream.chars_until(ASCII_LETTERS, true)
leavingThisState = false
elsif data == ">"
# XXX If we emit here the attributes are converted to a dict
# without being checked and when the code below runs we error
# because data is a dict not a list
emitToken = true
elsif SPACE_CHARACTERS.include? data
@state = :after_attribute_name_state
elsif data == "/"
process_solidus_in_tag
@state = :before_attribute_name_state
else
@current_token[:data][-1][0] += data
leavingThisState = false
end
if leavingThisState
# Attributes are not dropped at this stage. That happens when the
# start tag token is emitted so values can still be safely appended
# to attributes, but we do want to report the parse error in time.
if @lowercase_attr_name
@current_token[:data][-1][0] = @current_token[:data].last.first.downcase
end
@current_token[:data][0...-1].each {|name,value|
if @current_token[:data].last.first == name
@token_queue << {:type => :ParseError, :data => "duplicate-attribute"}
break # don't report an error more than once
end
}
# XXX Fix for above XXX
emit_current_token if emitToken
end
return true
end
def after_attribute_name_state
data = @stream.char
if SPACE_CHARACTERS.include? data
@stream.chars_until(SPACE_CHARACTERS, true)
elsif data == "="
@state = :before_attribute_value_state
elsif data == ">"
emit_current_token
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "expected-end-of-tag-but-got-eof"}
emit_current_token
elsif ASCII_LETTERS.include? data
@current_token[:data].push([data, ""])
@state = :attribute_name_state
elsif data == "/"
process_solidus_in_tag
@state = :before_attribute_name_state
else
@current_token[:data].push([data, ""])
@state = :attribute_name_state
end
return true
end
def before_attribute_value_state
data = @stream.char
if SPACE_CHARACTERS.include? data
@stream.chars_until(SPACE_CHARACTERS, true)
elsif data == "\""
@state = :attribute_value_double_quoted_state
elsif data == "&"
@state = :attribute_value_unquoted_state
@stream.unget(data);
elsif data == "'"
@state = :attribute_value_single_quoted_state
elsif data == ">"
emit_current_token
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "expected-attribute-value-but-got-eof"}
emit_current_token
else
@current_token[:data][-1][1] += data
@state = :attribute_value_unquoted_state
end
return true
end
def attribute_value_double_quoted_state
data = @stream.char
if data == "\""
@state = :before_attribute_name_state
elsif data == "&"
process_entity_in_attribute
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-attribute-value-double-quote"}
emit_current_token
else
@current_token[:data][-1][1] += data + @stream.chars_until(["\"", "&"])
end
return true
end
def attribute_value_single_quoted_state
data = @stream.char
if data == "'"
@state = :before_attribute_name_state
elsif data == "&"
process_entity_in_attribute
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-attribute-value-single-quote"}
emit_current_token
else
@current_token[:data][-1][1] += data +\
@stream.chars_until(["'", "&"])
end
return true
end
def attribute_value_unquoted_state
data = @stream.char
if SPACE_CHARACTERS.include? data
@state = :before_attribute_name_state
elsif data == "&"
process_entity_in_attribute
elsif data == ">"
emit_current_token
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-attribute-value-no-quotes"}
emit_current_token
else
@current_token[:data][-1][1] += data + @stream.chars_until(["&", ">","<"] + SPACE_CHARACTERS)
end
return true
end
def bogus_comment_state
# Make a new comment token and give it as value all the characters
# until the first > or :EOF (chars_until checks for :EOF automatically)
# and emit it.
@token_queue << {:type => :Comment, :data => @stream.chars_until((">"))}
# Eat the character directly after the bogus comment which is either a
# ">" or an :EOF.
@stream.char
@state = :data_state
return true
end
def markup_declaration_open_state
char_stack = [@stream.char, @stream.char]
if char_stack == ["-", "-"]
@current_token = {:type => :Comment, :data => ""}
@state = :comment_start_state
else
5.times { char_stack.push(@stream.char) }
# Put in explicit :EOF check
if !char_stack.include?(:EOF) && char_stack.join("").upcase == "DOCTYPE"
@current_token = {:type => :Doctype, :name => "", :publicId => nil, :systemId => nil, :correct => true}
@state = :doctype_state
else
@token_queue << {:type => :ParseError, :data => "expected-dashes-or-doctype"}
@stream.unget(char_stack)
@state = :bogus_comment_state
end
end
return true
end
def comment_start_state
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data = @stream.char
if data == "-"
@state = :comment_start_dash_state
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elsif data == ">"
@token_queue << {:type => :ParseError, :data => "incorrect-comment"}
@token_queue << @current_token
@state = :data_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-comment"}
@token_queue << @current_token
@state = :data_state
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else
@current_token[:data] += data + @stream.chars_until("-")
@state = :comment_state
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end
return true
end
def comment_start_dash_state
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data = @stream.char
if data == "-"
@state = :comment_end_state
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elsif data == ">"
@token_queue << {:type => :ParseError, :data => "incorrect-comment"}
@token_queue << @current_token
@state = :data_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-comment"}
@token_queue << @current_token
@state = :data_state
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else
@current_token[:data] += '-' + data + @stream.chars_until("-")
@state = :comment_state
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end
return true
end
def comment_state
data = @stream.char
if data == "-"
@state = :comment_end_dash_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-comment"}
@token_queue << @current_token
@state = :data_state
else
@current_token[:data] += data + @stream.chars_until("-")
end
return true
end
def comment_end_dash_state
data = @stream.char
if data == "-"
@state = :comment_end_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-comment-end-dash"}
@token_queue << @current_token
@state = :data_state
else
@current_token[:data] += "-" + data +\
@stream.chars_until("-")
# Consume the next character which is either a "-" or an :EOF as
# well so if there's a "-" directly after the "-" we go nicely to
# the "comment end state" without emitting a ParseError there.
@stream.char
end
return true
end
def comment_end_state
data = @stream.char
if data == ">"
@token_queue << @current_token
@state = :data_state
elsif data == "-"
@token_queue << {:type => :ParseError, :data => "unexpected-dash-after-double-dash-in-comment"}
@current_token[:data] += data
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-comment-double-dash"}
@token_queue << @current_token
@state = :data_state
else
# XXX
@token_queue << {:type => :ParseError, :data => "unexpected-char-in-comment"}
@current_token[:data] += "--" + data
@state = :comment_state
end
return true
end
def doctype_state
data = @stream.char
if SPACE_CHARACTERS.include? data
@state = :before_doctype_name_state
else
@token_queue << {:type => :ParseError, :data => "need-space-after-doctype"}
@stream.unget(data)
@state = :before_doctype_name_state
end
return true
end
def before_doctype_name_state
data = @stream.char
if SPACE_CHARACTERS.include? data
elsif data == ">"
@token_queue << {:type => :ParseError, :data => "expected-doctype-name-but-got-right-bracket"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "expected-doctype-name-but-got-eof"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
else
@current_token[:name] = data
@state = :doctype_name_state
end
return true
end
def doctype_name_state
data = @stream.char
if SPACE_CHARACTERS.include? data
@state = :after_doctype_name_state
elsif data == ">"
@token_queue << @current_token
@state = :data_state
elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype-name"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
else
@current_token[:name] += data
end
return true
end
def after_doctype_name_state
data = @stream.char
if SPACE_CHARACTERS.include? data
elsif data == ">"
@token_queue << @current_token
@state = :data_state
elsif data == :EOF
@current_token[:correct] = false
@stream.unget(data)
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@token_queue << @current_token
@state = :data_state
else
char_stack = [data]
5.times { char_stack << stream.char }
token = char_stack.join('').tr(ASCII_UPPERCASE,ASCII_LOWERCASE)
if token == "public" and !char_stack.include?(:EOF)
@state = :before_doctype_public_identifier_state
elsif token == "system" and !char_stack.include?(:EOF)
@state = :before_doctype_system_identifier_state
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else
@stream.unget(char_stack)
@token_queue << {:type => :ParseError, :data => "expected-space-or-right-bracket-in-doctype", "datavars" => {"data" => data}}
@state = :bogus_doctype_state
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end
end
return true
end
def before_doctype_public_identifier_state
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data = @stream.char
if SPACE_CHARACTERS.include?(data)
elsif data == "\""
@current_token[:publicId] = ""
@state = :doctype_public_identifier_double_quoted_state
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elsif data == "'"
@current_token[:publicId] = ""
@state = :doctype_public_identifier_single_quoted_state
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elsif data == ">"
@token_queue << {:type => :ParseError, :data => "unexpected-end-of-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@token_queue << {:type => :ParseError, :data => "unexpected-char-in-doctype"}
@state = :bogus_doctype_state
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end
return true
end
def doctype_public_identifier_double_quoted_state
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data = @stream.char
if data == "\""
@state = :after_doctype_public_identifier_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@current_token[:publicId] += data
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end
return true
end
def doctype_public_identifier_single_quoted_state
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data = @stream.char
if data == "'"
@state = :after_doctype_public_identifier_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@current_token[:publicId] += data
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end
return true
end
def after_doctype_public_identifier_state
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data = @stream.char
if SPACE_CHARACTERS.include?(data)
elsif data == "\""
@current_token[:systemId] = ""
@state = :doctype_system_identifier_double_quoted_state
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elsif data == "'"
@current_token[:systemId] = ""
@state = :doctype_system_identifier_single_quoted_state
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elsif data == ">"
@token_queue << @current_token
@state = :data_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@state = :bogus_doctype_state
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end
return true
end
def before_doctype_system_identifier_state
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data = @stream.char
if SPACE_CHARACTERS.include?(data)
elsif data == "\""
@current_token[:systemId] = ""
@state = :doctype_system_identifier_double_quoted_state
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elsif data == "'"
@current_token[:systemId] = ""
@state = :doctype_system_identifier_single_quoted_state
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elsif data == ">"
@token_queue << {:type => :ParseError, :data => "unexpected-char-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@token_queue << {:type => :ParseError, :data => "unexpected-char-in-doctype"}
@state = :bogus_doctype_state
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end
return true
end
def doctype_system_identifier_double_quoted_state
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data = @stream.char
if data == "\""
@state = :after_doctype_system_identifier_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@current_token[:systemId] += data
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end
return true
end
def doctype_system_identifier_single_quoted_state
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data = @stream.char
if data == "'"
@state = :after_doctype_system_identifier_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@current_token[:systemId] += data
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end
return true
end
def after_doctype_system_identifier_state
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data = @stream.char
if SPACE_CHARACTERS.include?(data)
elsif data == ">"
@token_queue << @current_token
@state = :data_state
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elsif data == :EOF
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
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else
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@state = :bogus_doctype_state
end
return true
end
def bogus_doctype_state
data = @stream.char
@current_token[:correct] = false
if data == ">"
@token_queue << @current_token
@state = :data_state
elsif data == :EOF
# XXX EMIT
@stream.unget(data)
@token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
@current_token[:correct] = false
@token_queue << @current_token
@state = :data_state
end
return true
end
end
end