diff options
Diffstat (limited to 'Parser.pm')
| -rw-r--r-- | Parser.pm | 840 |
1 files changed, 840 insertions, 0 deletions
diff --git a/Parser.pm b/Parser.pm new file mode 100644 index 0000000..064b021 --- /dev/null +++ b/Parser.pm @@ -0,0 +1,840 @@ +# XML::Parser +# +# Copyright (c) 1998-2000 Larry Wall and Clark Cooper +# All rights reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the same terms as Perl itself. + +package XML::Parser; + +use Carp; + +BEGIN { + require XML::Parser::Expat; + $VERSION = '2.36'; + die "Parser.pm and Expat.pm versions don't match" + unless $VERSION eq $XML::Parser::Expat::VERSION; +} + +use strict; + +use vars qw($VERSION $LWP_load_failed); + +$LWP_load_failed = 0; + +sub new { + my ($class, %args) = @_; + my $style = $args{Style}; + + my $nonexopt = $args{Non_Expat_Options} ||= {}; + + $nonexopt->{Style} = 1; + $nonexopt->{Non_Expat_Options} = 1; + $nonexopt->{Handlers} = 1; + $nonexopt->{_HNDL_TYPES} = 1; + $nonexopt->{NoLWP} = 1; + + $args{_HNDL_TYPES} = {%XML::Parser::Expat::Handler_Setters}; + $args{_HNDL_TYPES}->{Init} = 1; + $args{_HNDL_TYPES}->{Final} = 1; + + $args{Handlers} ||= {}; + my $handlers = $args{Handlers}; + + if (defined($style)) { + my $stylepkg = $style; + + if ($stylepkg !~ /::/) { + $stylepkg = "\u$style"; + + eval { + my $fullpkg = 'XML::Parser::Style::' . $stylepkg; + my $stylefile = $fullpkg; + $stylefile =~ s/::/\//g; + require "$stylefile.pm"; + $stylepkg = $fullpkg; + }; + if ($@) { + # fallback to old behaviour + $stylepkg = 'XML::Parser::' . $stylepkg; + } + } + + my $htype; + foreach $htype (keys %{$args{_HNDL_TYPES}}) { + # Handlers explicity given override + # handlers from the Style package + unless (defined($handlers->{$htype})) { + + # A handler in the style package must either have + # exactly the right case as the type name or a + # completely lower case version of it. + + my $hname = "${stylepkg}::$htype"; + if (defined(&$hname)) { + $handlers->{$htype} = \&$hname; + next; + } + + $hname = "${stylepkg}::\L$htype"; + if (defined(&$hname)) { + $handlers->{$htype} = \&$hname; + next; + } + } + } + } + + unless (defined($handlers->{ExternEnt}) + or defined ($handlers->{ExternEntFin})) { + + if ($args{NoLWP} or $LWP_load_failed) { + $handlers->{ExternEnt} = \&file_ext_ent_handler; + $handlers->{ExternEntFin} = \&file_ext_ent_cleanup; + } + else { + # The following just bootstraps the real LWP external entity + # handler + + $handlers->{ExternEnt} = \&initial_ext_ent_handler; + + # No cleanup function available until LWPExternEnt.pl loaded + } + } + + $args{Pkg} ||= caller; + bless \%args, $class; +} # End of new + +sub setHandlers { + my ($self, @handler_pairs) = @_; + + croak("Uneven number of arguments to setHandlers method") + if (int(@handler_pairs) & 1); + + my @ret; + while (@handler_pairs) { + my $type = shift @handler_pairs; + my $handler = shift @handler_pairs; + unless (defined($self->{_HNDL_TYPES}->{$type})) { + my @types = sort keys %{$self->{_HNDL_TYPES}}; + + croak("Unknown Parser handler type: $type\n Valid types: @types"); + } + push(@ret, $type, $self->{Handlers}->{$type}); + $self->{Handlers}->{$type} = $handler; + } + + return @ret; +} + +sub parse_start { + my $self = shift; + my @expat_options = (); + + my ($key, $val); + while (($key, $val) = each %{$self}) { + push (@expat_options, $key, $val) + unless exists $self->{Non_Expat_Options}->{$key}; + } + + my %handlers = %{$self->{Handlers}}; + my $init = delete $handlers{Init}; + my $final = delete $handlers{Final}; + + my $expatnb = new XML::Parser::ExpatNB(@expat_options, @_); + $expatnb->setHandlers(%handlers); + + &$init($expatnb) + if defined($init); + + $expatnb->{_State_} = 1; + + $expatnb->{FinalHandler} = $final + if defined($final); + + return $expatnb; +} + +sub parse { + my $self = shift; + my $arg = shift; + my @expat_options = (); + my ($key, $val); + while (($key, $val) = each %{$self}) { + push(@expat_options, $key, $val) + unless exists $self->{Non_Expat_Options}->{$key}; + } + + my $expat = new XML::Parser::Expat(@expat_options, @_); + my %handlers = %{$self->{Handlers}}; + my $init = delete $handlers{Init}; + my $final = delete $handlers{Final}; + + $expat->setHandlers(%handlers); + + if ($self->{Base}) { + $expat->base($self->{Base}); + } + + &$init($expat) + if defined($init); + + my @result = (); + my $result; + eval { + $result = $expat->parse($arg); + }; + my $err = $@; + if ($err) { + $expat->release; + die $err; + } + + if ($result and defined($final)) { + if (wantarray) { + @result = &$final($expat); + } + else { + $result = &$final($expat); + } + } + + $expat->release; + + return unless defined wantarray; + return wantarray ? @result : $result; +} + +sub parsestring { + my $self = shift; + $self->parse(@_); +} + +sub parsefile { + my $self = shift; + my $file = shift; + local(*FILE); + open(FILE, $file) or croak "Couldn't open $file:\n$!"; + binmode(FILE); + my @ret; + my $ret; + + $self->{Base} = $file; + + if (wantarray) { + eval { + @ret = $self->parse(*FILE, @_); + }; + } + else { + eval { + $ret = $self->parse(*FILE, @_); + }; + } + my $err = $@; + close(FILE); + die $err if $err; + + return unless defined wantarray; + return wantarray ? @ret : $ret; +} + +sub initial_ext_ent_handler { + # This just bootstraps in the real lwp_ext_ent_handler which + # also loads the URI and LWP modules. + + unless ($LWP_load_failed) { + local($^W) = 0; + + my $stat = + eval { + require('XML/Parser/LWPExternEnt.pl'); + }; + + if ($stat) { + $_[0]->setHandlers(ExternEnt => \&lwp_ext_ent_handler, + ExternEntFin => \&lwp_ext_ent_cleanup); + + goto &lwp_ext_ent_handler; + } + + # Failed to load lwp handler, act as if NoLWP + + $LWP_load_failed = 1; + + my $cmsg = "Couldn't load LWP based external entity handler\n"; + $cmsg .= "Switching to file-based external entity handler\n"; + $cmsg .= " (To avoid this message, use NoLWP option to XML::Parser)\n"; + warn($cmsg); + } + + $_[0]->setHandlers(ExternEnt => \&file_ext_ent_handler, + ExternEntFin => \&file_ext_ent_cleanup); + goto &file_ext_ent_handler; + +} + +sub file_ext_ent_handler { + my ($xp, $base, $path) = @_; + + # Prepend base only for relative paths + + if (defined($base) + and not ($path =~ m!^(?:[\\/]|\w+:)!)) + { + my $newpath = $base; + $newpath =~ s![^\\/:]*$!$path!; + $path = $newpath; + } + + if ($path =~ /^\s*[|>+]/ + or $path =~ /\|\s*$/) { + $xp->{ErrorMessage} + .= "System ID ($path) contains Perl IO control characters"; + return undef; + } + + require IO::File; + my $fh = new IO::File($path); + unless (defined $fh) { + $xp->{ErrorMessage} + .= "Failed to open $path:\n$!"; + return undef; + } + + $xp->{_BaseStack} ||= []; + $xp->{_FhStack} ||= []; + + push(@{$xp->{_BaseStack}}, $base); + push(@{$xp->{_FhStack}}, $fh); + + $xp->base($path); + + return $fh; +} + +sub file_ext_ent_cleanup { + my ($xp) = @_; + + my $fh = pop(@{$xp->{_FhStack}}); + $fh->close; + + my $base = pop(@{$xp->{_BaseStack}}); + $xp->base($base); +} + +1; + +__END__ + +=head1 NAME + +XML::Parser - A perl module for parsing XML documents + +=head1 SYNOPSIS + + use XML::Parser; + + $p1 = new XML::Parser(Style => 'Debug'); + $p1->parsefile('REC-xml-19980210.xml'); + $p1->parse('<foo id="me">Hello World</foo>'); + + # Alternative + $p2 = new XML::Parser(Handlers => {Start => \&handle_start, + End => \&handle_end, + Char => \&handle_char}); + $p2->parse($socket); + + # Another alternative + $p3 = new XML::Parser(ErrorContext => 2); + + $p3->setHandlers(Char => \&text, + Default => \&other); + + open(FOO, 'xmlgenerator |'); + $p3->parse(*FOO, ProtocolEncoding => 'ISO-8859-1'); + close(FOO); + + $p3->parsefile('junk.xml', ErrorContext => 3); + +=begin man +.ds PI PI + +=end man + +=head1 DESCRIPTION + +This module provides ways to parse XML documents. It is built on top of +L<XML::Parser::Expat>, which is a lower level interface to James Clark's +expat library. Each call to one of the parsing methods creates a new +instance of XML::Parser::Expat which is then used to parse the document. +Expat options may be provided when the XML::Parser object is created. +These options are then passed on to the Expat object on each parse call. +They can also be given as extra arguments to the parse methods, in which +case they override options given at XML::Parser creation time. + +The behavior of the parser is controlled either by C<L</Style>> and/or +C<L</Handlers>> options, or by L</setHandlers> method. These all provide +mechanisms for XML::Parser to set the handlers needed by XML::Parser::Expat. +If neither C<Style> nor C<Handlers> are specified, then parsing just +checks the document for being well-formed. + +When underlying handlers get called, they receive as their first parameter +the I<Expat> object, not the Parser object. + +=head1 METHODS + +=over 4 + +=item new + +This is a class method, the constructor for XML::Parser. Options are passed +as keyword value pairs. Recognized options are: + +=over 4 + +=item * Style + +This option provides an easy way to create a given style of parser. The +built in styles are: L<"Debug">, L<"Subs">, L<"Tree">, L<"Objects">, +and L<"Stream">. These are all defined in separate packages under +C<XML::Parser::Style::*>, and you can find further documentation for +each style both below, and in those packages. + +Custom styles can be provided by giving a full package name containing +at least one '::'. This package should then have subs defined for each +handler it wishes to have installed. See L<"STYLES"> below +for a discussion of each built in style. + +=item * Handlers + +When provided, this option should be an anonymous hash containing as +keys the type of handler and as values a sub reference to handle that +type of event. All the handlers get passed as their 1st parameter the +instance of expat that is parsing the document. Further details on +handlers can be found in L<"HANDLERS">. Any handler set here +overrides the corresponding handler set with the Style option. + +=item * Pkg + +Some styles will refer to subs defined in this package. If not provided, +it defaults to the package which called the constructor. + +=item * ErrorContext + +This is an Expat option. When this option is defined, errors are reported +in context. The value should be the number of lines to show on either side +of the line in which the error occurred. + +=item * ProtocolEncoding + +This is an Expat option. This sets the protocol encoding name. It defaults +to none. The built-in encodings are: C<UTF-8>, C<ISO-8859-1>, C<UTF-16>, and +C<US-ASCII>. Other encodings may be used if they have encoding maps in one +of the directories in the @Encoding_Path list. Check L<"ENCODINGS"> for +more information on encoding maps. Setting the protocol encoding overrides +any encoding in the XML declaration. + +=item * Namespaces + +This is an Expat option. If this is set to a true value, then namespace +processing is done during the parse. See L<XML::Parser::Expat/"Namespaces"> +for further discussion of namespace processing. + +=item * NoExpand + +This is an Expat option. Normally, the parser will try to expand references +to entities defined in the internal subset. If this option is set to a true +value, and a default handler is also set, then the default handler will be +called when an entity reference is seen in text. This has no effect if a +default handler has not been registered, and it has no effect on the expansion +of entity references inside attribute values. + +=item * Stream_Delimiter + +This is an Expat option. It takes a string value. When this string is found +alone on a line while parsing from a stream, then the parse is ended as if it +saw an end of file. The intended use is with a stream of xml documents in a +MIME multipart format. The string should not contain a trailing newline. + +=item * ParseParamEnt + +This is an Expat option. Unless standalone is set to "yes" in the XML +declaration, setting this to a true value allows the external DTD to be read, +and parameter entities to be parsed and expanded. + +=item * NoLWP + +This option has no effect if the ExternEnt or ExternEntFin handlers are +directly set. Otherwise, if true, it forces the use of a file based external +entity handler. + +=item * Non-Expat-Options + +If provided, this should be an anonymous hash whose keys are options that +shouldn't be passed to Expat. This should only be of concern to those +subclassing XML::Parser. + +=back + +=item setHandlers(TYPE, HANDLER [, TYPE, HANDLER [...]]) + +This method registers handlers for various parser events. It overrides any +previous handlers registered through the Style or Handler options or through +earlier calls to setHandlers. By providing a false or undefined value as +the handler, the existing handler can be unset. + +This method returns a list of type, handler pairs corresponding to the +input. The handlers returned are the ones that were in effect prior to +the call. + +See a description of the handler types in L<"HANDLERS">. + +=item parse(SOURCE [, OPT => OPT_VALUE [...]]) + +The SOURCE parameter should either be a string containing the whole XML +document, or it should be an open IO::Handle. Constructor options to +XML::Parser::Expat given as keyword-value pairs may follow the SOURCE +parameter. These override, for this call, any options or attributes passed +through from the XML::Parser instance. + +A die call is thrown if a parse error occurs. Otherwise it will return 1 +or whatever is returned from the B<Final> handler, if one is installed. +In other words, what parse may return depends on the style. + +=item parsestring + +This is just an alias for parse for backwards compatibility. + +=item parsefile(FILE [, OPT => OPT_VALUE [...]]) + +Open FILE for reading, then call parse with the open handle. The file +is closed no matter how parse returns. Returns what parse returns. + +=item parse_start([ OPT => OPT_VALUE [...]]) + +Create and return a new instance of XML::Parser::ExpatNB. Constructor +options may be provided. If an init handler has been provided, it is +called before returning the ExpatNB object. Documents are parsed by +making incremental calls to the parse_more method of this object, which +takes a string. A single call to the parse_done method of this object, +which takes no arguments, indicates that the document is finished. + +If there is a final handler installed, it is executed by the parse_done +method before returning and the parse_done method returns whatever is +returned by the final handler. + +=back + +=head1 HANDLERS + +Expat is an event based parser. As the parser recognizes parts of the +document (say the start or end tag for an XML element), then any handlers +registered for that type of an event are called with suitable parameters. +All handlers receive an instance of XML::Parser::Expat as their first +argument. See L<XML::Parser::Expat/"METHODS"> for a discussion of the +methods that can be called on this object. + +=head2 Init (Expat) + +This is called just before the parsing of the document starts. + +=head2 Final (Expat) + +This is called just after parsing has finished, but only if no errors +occurred during the parse. Parse returns what this returns. + +=head2 Start (Expat, Element [, Attr, Val [,...]]) + +This event is generated when an XML start tag is recognized. Element is the +name of the XML element type that is opened with the start tag. The Attr & +Val pairs are generated for each attribute in the start tag. + +=head2 End (Expat, Element) + +This event is generated when an XML end tag is recognized. Note that +an XML empty tag (<foo/>) generates both a start and an end event. + +=head2 Char (Expat, String) + +This event is generated when non-markup is recognized. The non-markup +sequence of characters is in String. A single non-markup sequence of +characters may generate multiple calls to this handler. Whatever the +encoding of the string in the original document, this is given to the +handler in UTF-8. + +=head2 Proc (Expat, Target, Data) + +This event is generated when a processing instruction is recognized. + +=head2 Comment (Expat, Data) + +This event is generated when a comment is recognized. + +=head2 CdataStart (Expat) + +This is called at the start of a CDATA section. + +=head2 CdataEnd (Expat) + +This is called at the end of a CDATA section. + +=head2 Default (Expat, String) + +This is called for any characters that don't have a registered handler. +This includes both characters that are part of markup for which no +events are generated (markup declarations) and characters that +could generate events, but for which no handler has been registered. + +Whatever the encoding in the original document, the string is returned to +the handler in UTF-8. + +=head2 Unparsed (Expat, Entity, Base, Sysid, Pubid, Notation) + +This is called for a declaration of an unparsed entity. Entity is the name +of the entity. Base is the base to be used for resolving a relative URI. +Sysid is the system id. Pubid is the public id. Notation is the notation +name. Base and Pubid may be undefined. + +=head2 Notation (Expat, Notation, Base, Sysid, Pubid) + +This is called for a declaration of notation. Notation is the notation name. +Base is the base to be used for resolving a relative URI. Sysid is the system +id. Pubid is the public id. Base, Sysid, and Pubid may all be undefined. + +=head2 ExternEnt (Expat, Base, Sysid, Pubid) + +This is called when an external entity is referenced. Base is the base to be +used for resolving a relative URI. Sysid is the system id. Pubid is the public +id. Base, and Pubid may be undefined. + +This handler should either return a string, which represents the contents of +the external entity, or return an open filehandle that can be read to obtain +the contents of the external entity, or return undef, which indicates the +external entity couldn't be found and will generate a parse error. + +If an open filehandle is returned, it must be returned as either a glob +(*FOO) or as a reference to a glob (e.g. an instance of IO::Handle). + +A default handler is installed for this event. The default handler is +XML::Parser::lwp_ext_ent_handler unless the NoLWP option was provided with +a true value, otherwise XML::Parser::file_ext_ent_handler is the default +handler for external entities. Even without the NoLWP option, if the +URI or LWP modules are missing, the file based handler ends up being used +after giving a warning on the first external entity reference. + +The LWP external entity handler will use proxies defined in the environment +(http_proxy, ftp_proxy, etc.). + +Please note that the LWP external entity handler reads the entire +entity into a string and returns it, where as the file handler opens a +filehandle. + +Also note that the file external entity handler will likely choke on +absolute URIs or file names that don't fit the conventions of the local +operating system. + +The expat base method can be used to set a basename for +relative pathnames. If no basename is given, or if the basename is itself +a relative name, then it is relative to the current working directory. + +=head2 ExternEntFin (Expat) + +This is called after parsing an external entity. It's not called unless +an ExternEnt handler is also set. There is a default handler installed +that pairs with the default ExternEnt handler. + +If you're going to install your own ExternEnt handler, then you should +set (or unset) this handler too. + +=head2 Entity (Expat, Name, Val, Sysid, Pubid, Ndata, IsParam) + +This is called when an entity is declared. For internal entities, the Val +parameter will contain the value and the remaining three parameters will be +undefined. For external entities, the Val parameter will be undefined, the +Sysid parameter will have the system id, the Pubid parameter will have the +public id if it was provided (it will be undefined otherwise), the Ndata +parameter will contain the notation for unparsed entities. If this is a +parameter entity declaration, then the IsParam parameter is true. + +Note that this handler and the Unparsed handler above overlap. If both are +set, then this handler will not be called for unparsed entities. + +=head2 Element (Expat, Name, Model) + +The element handler is called when an element declaration is found. Name +is the element name, and Model is the content model as an XML::Parser::Content +object. See L<XML::Parser::Expat/"XML::Parser::ContentModel Methods"> +for methods available for this class. + +=head2 Attlist (Expat, Elname, Attname, Type, Default, Fixed) + +This handler is called for each attribute in an ATTLIST declaration. +So an ATTLIST declaration that has multiple attributes will generate multiple +calls to this handler. The Elname parameter is the name of the element with +which the attribute is being associated. The Attname parameter is the name +of the attribute. Type is the attribute type, given as a string. Default is +the default value, which will either be "#REQUIRED", "#IMPLIED" or a quoted +string (i.e. the returned string will begin and end with a quote character). +If Fixed is true, then this is a fixed attribute. + +=head2 Doctype (Expat, Name, Sysid, Pubid, Internal) + +This handler is called for DOCTYPE declarations. Name is the document type +name. Sysid is the system id of the document type, if it was provided, +otherwise it's undefined. Pubid is the public id of the document type, +which will be undefined if no public id was given. Internal is the internal +subset, given as a string. If there was no internal subset, it will be +undefined. Internal will contain all whitespace, comments, processing +instructions, and declarations seen in the internal subset. The declarations +will be there whether or not they have been processed by another handler +(except for unparsed entities processed by the Unparsed handler). However, +comments and processing instructions will not appear if they've been processed +by their respective handlers. + +=head2 * DoctypeFin (Parser) + +This handler is called after parsing of the DOCTYPE declaration has finished, +including any internal or external DTD declarations. + +=head2 XMLDecl (Expat, Version, Encoding, Standalone) + +This handler is called for xml declarations. Version is a string containg +the version. Encoding is either undefined or contains an encoding string. +Standalone will be either true, false, or undefined if the standalone attribute +is yes, no, or not made respectively. + +=head1 STYLES + +=head2 Debug + +This just prints out the document in outline form. Nothing special is +returned by parse. + +=head2 Subs + +Each time an element starts, a sub by that name in the package specified +by the Pkg option is called with the same parameters that the Start +handler gets called with. + +Each time an element ends, a sub with that name appended with an underscore +("_"), is called with the same parameters that the End handler gets called +with. + +Nothing special is returned by parse. + +=head2 Tree + +Parse will return a parse tree for the document. Each node in the tree +takes the form of a tag, content pair. Text nodes are represented with +a pseudo-tag of "0" and the string that is their content. For elements, +the content is an array reference. The first item in the array is a +(possibly empty) hash reference containing attributes. The remainder of +the array is a sequence of tag-content pairs representing the content +of the element. + +So for example the result of parsing: + + <foo><head id="a">Hello <em>there</em></head><bar>Howdy<ref/></bar>do</foo> + +would be: + + Tag Content + ================================================================== + [foo, [{}, head, [{id => "a"}, 0, "Hello ", em, [{}, 0, "there"]], + bar, [ {}, 0, "Howdy", ref, [{}]], + 0, "do" + ] + ] + +The root document "foo", has 3 children: a "head" element, a "bar" +element and the text "do". After the empty attribute hash, these are +represented in it's contents by 3 tag-content pairs. + +=head2 Objects + +This is similar to the Tree style, except that a hash object is created for +each element. The corresponding object will be in the class whose name +is created by appending "::" and the element name to the package set with +the Pkg option. Non-markup text will be in the ::Characters class. The +contents of the corresponding object will be in an anonymous array that +is the value of the Kids property for that object. + +=head2 Stream + +This style also uses the Pkg package. If none of the subs that this +style looks for is there, then the effect of parsing with this style is +to print a canonical copy of the document without comments or declarations. +All the subs receive as their 1st parameter the Expat instance for the +document they're parsing. + +It looks for the following routines: + +=over 4 + +=item * StartDocument + +Called at the start of the parse . + +=item * StartTag + +Called for every start tag with a second parameter of the element type. The $_ +variable will contain a copy of the tag and the %_ variable will contain +attribute values supplied for that element. + +=item * EndTag + +Called for every end tag with a second parameter of the element type. The $_ +variable will contain a copy of the end tag. + +=item * Text + +Called just before start or end tags with accumulated non-markup text in +the $_ variable. + +=item * PI + +Called for processing instructions. The $_ variable will contain a copy of +the PI and the target and data are sent as 2nd and 3rd parameters +respectively. + +=item * EndDocument + +Called at conclusion of the parse. + +=back + +=head1 ENCODINGS + +XML documents may be encoded in character sets other than Unicode as +long as they may be mapped into the Unicode character set. Expat has +further restrictions on encodings. Read the xmlparse.h header file in +the expat distribution to see details on these restrictions. + +Expat has built-in encodings for: C<UTF-8>, C<ISO-8859-1>, C<UTF-16>, and +C<US-ASCII>. Encodings are set either through the XML declaration +encoding attribute or through the ProtocolEncoding option to XML::Parser +or XML::Parser::Expat. + +For encodings other than the built-ins, expat calls the function +load_encoding in the Expat package with the encoding name. This function +looks for a file in the path list @XML::Parser::Expat::Encoding_Path, that +matches the lower-cased name with a '.enc' extension. The first one it +finds, it loads. + +If you wish to build your own encoding maps, check out the XML::Encoding +module from CPAN. + +=head1 AUTHORS + +Larry Wall <F<larry@wall.org>> wrote version 1.0. + +Clark Cooper <F<coopercc@netheaven.com>> picked up support, changed the API +for this version (2.x), provided documentation, +and added some standard package features. + +Matt Sergeant <F<matt@sergeant.org>> is now maintaining XML::Parser + +=cut |