diff options
Diffstat (limited to 'ruby_1_8_6/lib/rexml/parsers/baseparser.rb')
| -rw-r--r-- | ruby_1_8_6/lib/rexml/parsers/baseparser.rb | 503 |
1 files changed, 0 insertions, 503 deletions
diff --git a/ruby_1_8_6/lib/rexml/parsers/baseparser.rb b/ruby_1_8_6/lib/rexml/parsers/baseparser.rb deleted file mode 100644 index fc2354a67f..0000000000 --- a/ruby_1_8_6/lib/rexml/parsers/baseparser.rb +++ /dev/null @@ -1,503 +0,0 @@ -require 'rexml/parseexception' -require 'rexml/undefinednamespaceexception' -require 'rexml/source' -require 'set' - -module REXML - module Parsers - # = Using the Pull Parser - # <em>This API is experimental, and subject to change.</em> - # parser = PullParser.new( "<a>text<b att='val'/>txet</a>" ) - # while parser.has_next? - # res = parser.next - # puts res[1]['att'] if res.start_tag? and res[0] == 'b' - # end - # See the PullEvent class for information on the content of the results. - # The data is identical to the arguments passed for the various events to - # the StreamListener API. - # - # Notice that: - # parser = PullParser.new( "<a>BAD DOCUMENT" ) - # while parser.has_next? - # res = parser.next - # raise res[1] if res.error? - # end - # - # Nat Price gave me some good ideas for the API. - class BaseParser - NCNAME_STR= '[\w:][\-\w\d.]*' - NAME_STR= "(?:(#{NCNAME_STR}):)?(#{NCNAME_STR})" - UNAME_STR= "(?:#{NCNAME_STR}:)?#{NCNAME_STR}" - - NAMECHAR = '[\-\w\d\.:]' - NAME = "([\\w:]#{NAMECHAR}*)" - NMTOKEN = "(?:#{NAMECHAR})+" - NMTOKENS = "#{NMTOKEN}(\\s+#{NMTOKEN})*" - REFERENCE = "(?:&#{NAME};|&#\\d+;|&#x[0-9a-fA-F]+;)" - REFERENCE_RE = /#{REFERENCE}/ - - DOCTYPE_START = /\A\s*<!DOCTYPE\s/um - DOCTYPE_PATTERN = /\s*<!DOCTYPE\s+(.*?)(\[|>)/um - ATTRIBUTE_PATTERN = /\s*(#{NAME_STR})\s*=\s*(["'])(.*?)\4/um - COMMENT_START = /\A<!--/u - COMMENT_PATTERN = /<!--(.*?)-->/um - CDATA_START = /\A<!\[CDATA\[/u - CDATA_END = /^\s*\]\s*>/um - CDATA_PATTERN = /<!\[CDATA\[(.*?)\]\]>/um - XMLDECL_START = /\A<\?xml\s/u; - XMLDECL_PATTERN = /<\?xml\s+(.*?)\?>/um - INSTRUCTION_START = /\A<\?/u - INSTRUCTION_PATTERN = /<\?(.*?)(\s+.*?)?\?>/um - TAG_MATCH = /^<((?>#{NAME_STR}))\s*((?>\s+#{UNAME_STR}\s*=\s*(["']).*?\5)*)\s*(\/)?>/um - CLOSE_MATCH = /^\s*<\/(#{NAME_STR})\s*>/um - - VERSION = /\bversion\s*=\s*["'](.*?)['"]/um - ENCODING = /\bencoding\s*=\s*["'](.*?)['"]/um - STANDALONE = /\bstandalone\s*=\s["'](.*?)['"]/um - - ENTITY_START = /^\s*<!ENTITY/ - IDENTITY = /^([!\*\w\-]+)(\s+#{NCNAME_STR})?(\s+["'](.*?)['"])?(\s+['"](.*?)["'])?/u - ELEMENTDECL_START = /^\s*<!ELEMENT/um - ELEMENTDECL_PATTERN = /^\s*(<!ELEMENT.*?)>/um - SYSTEMENTITY = /^\s*(%.*?;)\s*$/um - ENUMERATION = "\\(\\s*#{NMTOKEN}(?:\\s*\\|\\s*#{NMTOKEN})*\\s*\\)" - NOTATIONTYPE = "NOTATION\\s+\\(\\s*#{NAME}(?:\\s*\\|\\s*#{NAME})*\\s*\\)" - ENUMERATEDTYPE = "(?:(?:#{NOTATIONTYPE})|(?:#{ENUMERATION}))" - ATTTYPE = "(CDATA|ID|IDREF|IDREFS|ENTITY|ENTITIES|NMTOKEN|NMTOKENS|#{ENUMERATEDTYPE})" - ATTVALUE = "(?:\"((?:[^<&\"]|#{REFERENCE})*)\")|(?:'((?:[^<&']|#{REFERENCE})*)')" - DEFAULTDECL = "(#REQUIRED|#IMPLIED|(?:(#FIXED\\s+)?#{ATTVALUE}))" - ATTDEF = "\\s+#{NAME}\\s+#{ATTTYPE}\\s+#{DEFAULTDECL}" - ATTDEF_RE = /#{ATTDEF}/ - ATTLISTDECL_START = /^\s*<!ATTLIST/um - ATTLISTDECL_PATTERN = /^\s*<!ATTLIST\s+#{NAME}(?:#{ATTDEF})*\s*>/um - NOTATIONDECL_START = /^\s*<!NOTATION/um - PUBLIC = /^\s*<!NOTATION\s+(\w[\-\w]*)\s+(PUBLIC)\s+(["'])(.*?)\3(?:\s+(["'])(.*?)\5)?\s*>/um - SYSTEM = /^\s*<!NOTATION\s+(\w[\-\w]*)\s+(SYSTEM)\s+(["'])(.*?)\3\s*>/um - - TEXT_PATTERN = /\A([^<]*)/um - - # Entity constants - PUBIDCHAR = "\x20\x0D\x0Aa-zA-Z0-9\\-()+,./:=?;!*@$_%#" - SYSTEMLITERAL = %Q{((?:"[^"]*")|(?:'[^']*'))} - PUBIDLITERAL = %Q{("[#{PUBIDCHAR}']*"|'[#{PUBIDCHAR}]*')} - EXTERNALID = "(?:(?:(SYSTEM)\\s+#{SYSTEMLITERAL})|(?:(PUBLIC)\\s+#{PUBIDLITERAL}\\s+#{SYSTEMLITERAL}))" - NDATADECL = "\\s+NDATA\\s+#{NAME}" - PEREFERENCE = "%#{NAME};" - ENTITYVALUE = %Q{((?:"(?:[^%&"]|#{PEREFERENCE}|#{REFERENCE})*")|(?:'([^%&']|#{PEREFERENCE}|#{REFERENCE})*'))} - PEDEF = "(?:#{ENTITYVALUE}|#{EXTERNALID})" - ENTITYDEF = "(?:#{ENTITYVALUE}|(?:#{EXTERNALID}(#{NDATADECL})?))" - PEDECL = "<!ENTITY\\s+(%)\\s+#{NAME}\\s+#{PEDEF}\\s*>" - GEDECL = "<!ENTITY\\s+#{NAME}\\s+#{ENTITYDEF}\\s*>" - ENTITYDECL = /\s*(?:#{GEDECL})|(?:#{PEDECL})/um - - EREFERENCE = /&(?!#{NAME};)/ - - DEFAULT_ENTITIES = { - 'gt' => [/>/, '>', '>', />/], - 'lt' => [/</, '<', '<', /</], - 'quot' => [/"/, '"', '"', /"/], - "apos" => [/'/, "'", "'", /'/] - } - - - ###################################################################### - # These are patterns to identify common markup errors, to make the - # error messages more informative. - ###################################################################### - MISSING_ATTRIBUTE_QUOTES = /^<#{NAME_STR}\s+#{NAME_STR}\s*=\s*[^"']/um - - def initialize( source ) - self.stream = source - end - - def add_listener( listener ) - if !defined?(@listeners) or !@listeners - @listeners = [] - instance_eval <<-EOL - alias :_old_pull :pull - def pull - event = _old_pull - @listeners.each do |listener| - listener.receive event - end - event - end - EOL - end - @listeners << listener - end - - attr_reader :source - - def stream=( source ) - @source = SourceFactory.create_from( source ) - @closed = nil - @document_status = nil - @tags = [] - @stack = [] - @entities = [] - @nsstack = [] - end - - def position - if @source.respond_to? :position - @source.position - else - # FIXME - 0 - end - end - - # Returns true if there are no more events - def empty? - return (@source.empty? and @stack.empty?) - end - - # Returns true if there are more events. Synonymous with !empty? - def has_next? - return !(@source.empty? and @stack.empty?) - end - - # Push an event back on the head of the stream. This method - # has (theoretically) infinite depth. - def unshift token - @stack.unshift(token) - end - - # Peek at the +depth+ event in the stack. The first element on the stack - # is at depth 0. If +depth+ is -1, will parse to the end of the input - # stream and return the last event, which is always :end_document. - # Be aware that this causes the stream to be parsed up to the +depth+ - # event, so you can effectively pre-parse the entire document (pull the - # entire thing into memory) using this method. - def peek depth=0 - raise %Q[Illegal argument "#{depth}"] if depth < -1 - temp = [] - if depth == -1 - temp.push(pull()) until empty? - else - while @stack.size+temp.size < depth+1 - temp.push(pull()) - end - end - @stack += temp if temp.size > 0 - @stack[depth] - end - - # Returns the next event. This is a +PullEvent+ object. - def pull - if @closed - x, @closed = @closed, nil - return [ :end_element, x ] - end - return [ :end_document ] if empty? - return @stack.shift if @stack.size > 0 - #STDERR.puts @source.encoding - @source.read if @source.buffer.size<2 - #STDERR.puts "BUFFER = #{@source.buffer.inspect}" - if @document_status == nil - #@source.consume( /^\s*/um ) - word = @source.match( /^((?:\s+)|(?:<[^>]*>))/um ) - word = word[1] unless word.nil? - #STDERR.puts "WORD = #{word.inspect}" - case word - when COMMENT_START - return [ :comment, @source.match( COMMENT_PATTERN, true )[1] ] - when XMLDECL_START - #STDERR.puts "XMLDECL" - results = @source.match( XMLDECL_PATTERN, true )[1] - version = VERSION.match( results ) - version = version[1] unless version.nil? - encoding = ENCODING.match(results) - encoding = encoding[1] unless encoding.nil? - @source.encoding = encoding - standalone = STANDALONE.match(results) - standalone = standalone[1] unless standalone.nil? - return [ :xmldecl, version, encoding, standalone ] - when INSTRUCTION_START - return [ :processing_instruction, *@source.match(INSTRUCTION_PATTERN, true)[1,2] ] - when DOCTYPE_START - md = @source.match( DOCTYPE_PATTERN, true ) - @nsstack.unshift(curr_ns=Set.new) - identity = md[1] - close = md[2] - identity =~ IDENTITY - name = $1 - raise REXML::ParseException.new("DOCTYPE is missing a name") if name.nil? - pub_sys = $2.nil? ? nil : $2.strip - long_name = $4.nil? ? nil : $4.strip - uri = $6.nil? ? nil : $6.strip - args = [ :start_doctype, name, pub_sys, long_name, uri ] - if close == ">" - @document_status = :after_doctype - @source.read if @source.buffer.size<2 - md = @source.match(/^\s*/um, true) - @stack << [ :end_doctype ] - else - @document_status = :in_doctype - end - return args - when /^\s+/ - else - @document_status = :after_doctype - @source.read if @source.buffer.size<2 - md = @source.match(/\s*/um, true) - end - end - if @document_status == :in_doctype - md = @source.match(/\s*(.*?>)/um) - case md[1] - when SYSTEMENTITY - match = @source.match( SYSTEMENTITY, true )[1] - return [ :externalentity, match ] - - when ELEMENTDECL_START - return [ :elementdecl, @source.match( ELEMENTDECL_PATTERN, true )[1] ] - - when ENTITY_START - match = @source.match( ENTITYDECL, true ).to_a.compact - match[0] = :entitydecl - ref = false - if match[1] == '%' - ref = true - match.delete_at 1 - end - # Now we have to sort out what kind of entity reference this is - if match[2] == 'SYSTEM' - # External reference - match[3] = match[3][1..-2] # PUBID - match.delete_at(4) if match.size > 4 # Chop out NDATA decl - # match is [ :entity, name, SYSTEM, pubid(, ndata)? ] - elsif match[2] == 'PUBLIC' - # External reference - match[3] = match[3][1..-2] # PUBID - match[4] = match[4][1..-2] # HREF - # match is [ :entity, name, PUBLIC, pubid, href ] - else - match[2] = match[2][1..-2] - match.pop if match.size == 4 - # match is [ :entity, name, value ] - end - match << '%' if ref - return match - when ATTLISTDECL_START - md = @source.match( ATTLISTDECL_PATTERN, true ) - raise REXML::ParseException.new( "Bad ATTLIST declaration!", @source ) if md.nil? - element = md[1] - contents = md[0] - - pairs = {} - values = md[0].scan( ATTDEF_RE ) - values.each do |attdef| - unless attdef[3] == "#IMPLIED" - attdef.compact! - val = attdef[3] - val = attdef[4] if val == "#FIXED " - pairs[attdef[0]] = val - if attdef[0] =~ /^xmlns:(.*)/ - @nsstack[0] << $1 - end - end - end - return [ :attlistdecl, element, pairs, contents ] - when NOTATIONDECL_START - md = nil - if @source.match( PUBLIC ) - md = @source.match( PUBLIC, true ) - vals = [md[1],md[2],md[4],md[6]] - elsif @source.match( SYSTEM ) - md = @source.match( SYSTEM, true ) - vals = [md[1],md[2],nil,md[4]] - else - raise REXML::ParseException.new( "error parsing notation: no matching pattern", @source ) - end - return [ :notationdecl, *vals ] - when CDATA_END - @document_status = :after_doctype - @source.match( CDATA_END, true ) - return [ :end_doctype ] - end - end - begin - if @source.buffer[0] == ?< - if @source.buffer[1] == ?/ - @nsstack.shift - last_tag = @tags.pop - #md = @source.match_to_consume( '>', CLOSE_MATCH) - md = @source.match( CLOSE_MATCH, true ) - raise REXML::ParseException.new( "Missing end tag for "+ - "'#{last_tag}' (got \"#{md[1]}\")", - @source) unless last_tag == md[1] - return [ :end_element, last_tag ] - elsif @source.buffer[1] == ?! - md = @source.match(/\A(\s*[^>]*>)/um) - #STDERR.puts "SOURCE BUFFER = #{source.buffer}, #{source.buffer.size}" - raise REXML::ParseException.new("Malformed node", @source) unless md - if md[0][2] == ?- - md = @source.match( COMMENT_PATTERN, true ) - return [ :comment, md[1] ] if md - else - md = @source.match( CDATA_PATTERN, true ) - return [ :cdata, md[1] ] if md - end - raise REXML::ParseException.new( "Declarations can only occur "+ - "in the doctype declaration.", @source) - elsif @source.buffer[1] == ?? - md = @source.match( INSTRUCTION_PATTERN, true ) - return [ :processing_instruction, md[1], md[2] ] if md - raise REXML::ParseException.new( "Bad instruction declaration", - @source) - else - # Get the next tag - md = @source.match(TAG_MATCH, true) - unless md - # Check for missing attribute quotes - raise REXML::ParseException.new("missing attribute quote", @source) if @source.match(MISSING_ATTRIBUTE_QUOTES ) - raise REXML::ParseException.new("malformed XML: missing tag start", @source) - end - attributes = {} - prefixes = Set.new - prefixes << md[2] if md[2] - @nsstack.unshift(curr_ns=Set.new) - if md[4].size > 0 - attrs = md[4].scan( ATTRIBUTE_PATTERN ) - raise REXML::ParseException.new( "error parsing attributes: [#{attrs.join ', '}], excess = \"#$'\"", @source) if $' and $'.strip.size > 0 - attrs.each { |a,b,c,d,e| - if b == "xmlns" - if c == "xml" - if d != "http://www.w3.org/XML/1998/namespace" - msg = "The 'xml' prefix must not be bound to any other namespace "+ - "(http://www.w3.org/TR/REC-xml-names/#ns-decl)" - raise REXML::ParseException.new( msg, @source, self ) - end - elsif c == "xmlns" - msg = "The 'xmlns' prefix must not be declared "+ - "(http://www.w3.org/TR/REC-xml-names/#ns-decl)" - raise REXML::ParseException.new( msg, @source, self) - end - curr_ns << c - elsif b - prefixes << b unless b == "xml" - end - attributes[a] = e - } - end - - # Verify that all of the prefixes have been defined - for prefix in prefixes - unless @nsstack.find{|k| k.member?(prefix)} - raise UndefinedNamespaceException.new(prefix,@source,self) - end - end - - if md[6] - @closed = md[1] - @nsstack.shift - else - @tags.push( md[1] ) - end - return [ :start_element, md[1], attributes ] - end - else - md = @source.match( TEXT_PATTERN, true ) - if md[0].length == 0 - @source.match( /(\s+)/, true ) - end - #STDERR.puts "GOT #{md[1].inspect}" unless md[0].length == 0 - #return [ :text, "" ] if md[0].length == 0 - # unnormalized = Text::unnormalize( md[1], self ) - # return PullEvent.new( :text, md[1], unnormalized ) - return [ :text, md[1] ] - end - rescue REXML::UndefinedNamespaceException - raise - rescue REXML::ParseException - raise - rescue Exception, NameError => error - raise REXML::ParseException.new( "Exception parsing", - @source, self, (error ? error : $!) ) - end - return [ :dummy ] - end - - def entity( reference, entities ) - value = nil - value = entities[ reference ] if entities - if not value - value = DEFAULT_ENTITIES[ reference ] - value = value[2] if value - end - unnormalize( value, entities ) if value - end - - # Escapes all possible entities - def normalize( input, entities=nil, entity_filter=nil ) - copy = input.clone - # Doing it like this rather than in a loop improves the speed - copy.gsub!( EREFERENCE, '&' ) - entities.each do |key, value| - copy.gsub!( value, "&#{key};" ) unless entity_filter and - entity_filter.include?(entity) - end if entities - copy.gsub!( EREFERENCE, '&' ) - DEFAULT_ENTITIES.each do |key, value| - copy.gsub!( value[3], value[1] ) - end - copy - end - - # Unescapes all possible entities - def unnormalize( string, entities=nil, filter=nil ) - rv = string.clone - rv.gsub!( /\r\n?/, "\n" ) - matches = rv.scan( REFERENCE_RE ) - return rv if matches.size == 0 - rv.gsub!( /�*((?:\d+)|(?:x[a-fA-F0-9]+));/ ) {|m| - m=$1 - m = "0#{m}" if m[0] == ?x - [Integer(m)].pack('U*') - } - matches.collect!{|x|x[0]}.compact! - if matches.size > 0 - matches.each do |entity_reference| - unless filter and filter.include?(entity_reference) - entity_value = entity( entity_reference, entities ) - if entity_value - re = /&#{entity_reference};/ - rv.gsub!( re, entity_value ) - end - end - end - matches.each do |entity_reference| - unless filter and filter.include?(entity_reference) - er = DEFAULT_ENTITIES[entity_reference] - rv.gsub!( er[0], er[2] ) if er - end - end - rv.gsub!( /&/, '&' ) - end - rv - end - end - end -end - -=begin - case event[0] - when :start_element - when :text - when :end_element - when :processing_instruction - when :cdata - when :comment - when :xmldecl - when :start_doctype - when :end_doctype - when :externalentity - when :elementdecl - when :entity - when :attlistdecl - when :notationdecl - when :end_doctype - end -=end |