Provided by: libxml-tokeparser-perl_0.05-3_all bug


       XML::TokeParser - Simplified interface to XML::Parser


           use XML::TokeParser;
           #parse from file
           my $p = XML::TokeParser->new('file.xml')
           #parse from open handle
           open IN, 'file.xml' or die $!;
           my $p = XML::TokeParser->new( \*IN, Noempty => 1 );
           #parse literal text
           my $text = '<tag xmlns="">text</tag>';
           my $p    = XML::TokeParser->new( \$text, Namespaces => 1 );
           #read next token
           my $token = $p->get_token();
           #skip to <title> and read text
           #read text of next <para>, ignoring any internal markup
           #process <para> if interesting text
           $t = $p->get_tag('para');
           if ( $p->get_trimmed_text('/para') =~ /interesting stuff/ ) {


       XML::TokeParser provides a procedural ("pull mode") interface to XML::Parser in much the
       same way that Gisle Aas' HTML::TokeParser provides a procedural interface to HTML::Parser.
       XML::TokeParser splits its XML input up into "tokens," each corresponding to an
       XML::Parser event.

       A token is a bless'd reference to an array whose first element is an event-type string and
       whose last element is the literal text of the XML input that generated the event, with
       intermediate elements varying according to the event type.

       Each token is an object of type XML::TokeParser::Token.  Read "XML::TokeParser::Token" to
       learn what methods are available for inspecting the token, and retrieving data from it.


       $p = XML::TokeParser->new($input, [options])
           Creates a new parser, specifying the input source and any options.  If $input is a
           string, it is the name of the file to parse.  If $input is a reference to a string,
           that string is the actual text to parse.  If $input is a reference to a typeglob or an
           IO::Handle object corresponding to an open file or socket, the text read from the
           handle will be parsed.

           Options are name=>value pairs and can be any of the following:

               If set to a true value, namespace processing is enabled.

               This option is passed on to the underlying XML::Parser object; see that module's
               documentation for details.

               If set to a true value, text tokens consisting of only whitespace (such as those
               created by indentation and line breaks in between tags) will be ignored.

               If set to a true value, all text other than the literal text elements of tokens
               will be translated into the ISO 8859-1 (Latin-1) character encoding rather than
               the normal UTF-8 encoding.

               The value is the URI of a catalog file used to resolve PUBLIC and SYSTEM
               identifiers.  See XML::Catalog for details.

       $token = $p->get_token()
           Returns the next token, as an array reference, from the input.  Returns undef if there
           are no remaining tokens.

           Pushes tokens back so they will be re-read.  Useful if you've read one or more tokens
           too far.  Correctly handles "partial" tokens returned by get_tag().

       $token = $p->get_tag( [$token] )
           If no argument given, skips tokens until the next start tag or end tag token. If an
           argument is given, skips tokens until the start tag or end tag (if the argument begins
           with '/') for the named element.  The returned token does not include an event type
           code; its first element is the element name, prefixed by a '/' if the token is for an
           end tag.

       $text = $p->get_text( [$token] )
           If no argument given, returns the text at the current position, or an empty string if
           the next token is not a 'T' token.  If an argument is given, gathers up all text
           between the current position and the specified start or end tag, stripping out any
           intervening tags (much like the way a typical Web browser deals with unknown tags).

       $text = $p->get_trimmed_text( [$token] )
           Like get_text(), but deletes any leading or trailing whitespaces and collapses
           multiple whitespace (including newlines) into single spaces.

       $p->begin_saving( [$token] )
           Causes subsequent calls to get_token(), get_tag(), get_text(), and get_trimmed_text()
           to save the returned tokens.  In conjunction with restore_saved(), allows you to "back
           up" within a token stream.  If an argument is supplied, it is placed at the beginning
           of the list of saved tokens (useful because you often won't know you want to begin
           saving until you've already read the first token you want saved).

           Pushes all the tokens saved by begin_saving() back onto the token stream.  Stops
           saving tokens.  To cancel saving without backing up, call begin_saving() and
           restore_saved() in succession.

       A token is a blessed array reference, that you acquire using "$p->get_token" or
       "$p->get_tag", and that might look like:

           ["S",  $tag, $attr, $attrseq, $raw]
           ["E",  $tag, $raw]
           ["T",  $text, $raw]
           ["C",  $text, $raw]
           ["PI", $target, $data, $raw]

       If you don't like remembering array indices (you're a real programmer), you may access the
       attributes of a token like:

       "$t->tag", "$t->attr", "$t->attrseq", "$t->raw", "$t->text", "$t->target", "$t->data".

       ****Please note that this may change in the future, where as there will be 4 token types,
       XML::TokeParser::Token::StartTag ....

       What kind of token is it?

       To find out, inspect your token using any of these is_* methods (1 == true, 0 == false,

       is_pi which is short for is_process_instruction

       What's that token made of?  To retrieve data from your token, use any of the following
       methods, depending on the kind of token you have:

           only for process instructions

           only for process instructions

       raw for all tokens

           only for start tags, returns a hashref ( "print "#link ", ""$t->attr""->{href}" ).

       my $attrseq = $t->attrseq
           only for start tags, returns an array ref of the keys found in "$t->attr" in the order
           they originally appeared in.

       my $tagname = $t->tag
           only for tags ( "print "opening ", ""$t->tag"" if ""$t->is_start_tag" ).

       my $text = $token->text
           only for tokens of type text and comment

       Here's more detailed info about the tokens.

       Start tag
           The token has five elements: 'S', the element's name, a reference to a hash of
           attribute values keyed by attribute names, a reference to an array of attribute names
           in the order in which they appeared in the tag, and the literal text.

       End tag
           The token has three elements: 'E', the element's name, and the literal text.

       Character data (text)
           The token has three elements: 'T', the parsed text, and the literal text.  All
           contiguous runs of text are gathered into single tokens; there will never be two 'T'
           tokens in a row.

           The token has three elements: 'C', the parsed text of the comment, and the literal

       Processing instruction
           The token has four elements: 'PI', the target, the data, and the literal text.

       The literal text includes any markup delimiters (pointy brackets, <![CDATA[, etc.), entity
       references, and numeric character references and is in the XML document's original
       character encoding.  All other text is in UTF-8 (unless the Latin option is set, in which
       case it's in ISO-8859-1) regardless of the original encoding, and all entity and character
       references are expanded.

       If the Namespaces option is set, element and attribute names are prefixed by their
       (possibly empty) namespace URIs enclosed in curly brackets and xmlns:* attributes do not
       appear in 'S' tokens.


       Uses a true XML parser rather than a modified HTML parser.

       Text and comment tokens include extracted text as well as literal text.

       PI tokens include target and data as well as literal text.

       No tokens for declarations.

       No "textify" hash.

       unget_token correctly handles partial tokens returned by get_tag().

       begin_saving() and restore_saved()



           use XML::TokeParser;
           use strict;
           my $text = '<tag foo="bar" foy="floy"> some text <!--comment--></tag>';
           my $p    = XML::TokeParser->new( \$text );
           print $/;
           while( defined( my $t = $p->get_token() ) ){
               local $\="\n";
               print '         raw = ', $t->raw;
               if( $t->tag ){
                   print '         tag = ', $t->tag;
                   if( $t->is_start_tag ) {
                       print '        attr = ', join ',', %{$t->attr};
                       print '     attrseq = ', join ',', @{$t->attrseq};
                   print 'is_tag       ', $t->is_tag;
                   print 'is_start_tag ', $t->is_start_tag;
                   print 'is_end_tag   ', $t->is_end_tag;
               elsif( $t->is_pi ){
                   print '      target = ', $t->target;
                   print '        data = ', $t->data;
                   print 'is_pi        ', $t->is_pi;
               else {
                   print '        text = ', $t->text;
                   print 'is_text      ', $t->is_text;
                   print 'is_comment   ', $t->is_comment;
               print $/;


                    raw = <tag foo="bar" foy="floy">
                    tag = tag
                   attr = foo,bar,foy,floy
                attrseq = foo,foy
           is_tag       1
           is_start_tag 1
           is_end_tag   0

                    raw =  some text
                   text =  some text
           is_text      1
           is_comment   0

                    raw = <!--comment-->
                   text = comment
           is_text      0
           is_comment   1

                    raw = </tag>
                    tag = tag
           is_tag       1
           is_start_tag 0
           is_end_tag   1


       To report bugs, go to <> or send
       mail to <>


       Copyright (c) 2003 D.H. aka PodMaster (current maintainer).  Copyright (c) 2001 Eric
       Bohlman (original author).

       All rights reserved.  This program is free software; you can redistribute it and/or modify
       it under the same terms as Perl itself.  If you don't know what this means, visit
       <> or <>.


       HTML::TokeParser, XML::Parser, XML::Catalog, XML::Smart, XML::Twig.