unhtml(1) [debian man page]

UNHTML(1)						      General Commands Manual							 UNHTML(1)

NAME

       unhtml - strip the HTML formatting from a document or the standard input stream and display it to the standard output

SYNOPSIS

       unhtml -version | [ filename ]

DESCRIPTION

       Parses  text  read  from  the  standard	input, or a file if a file name is supplied, and removes any HTML formatting it finds.	Prints the
       resulting cleansed text to the standard output for easy redirection.  The version included with this man page has been improved	to  handle
       comments and scripts.

OPTIONS

       -version
	      Version.	unhtml will display its version and exit.

EXAMPLES

       This  example  simply  scans  a	file called "index.html" and prints the file to the standard output with the HTML formatting removed.  The
       standard output is redirected to a file called "index.txt" which, after running, will contain the plain text of the .html file.

	      example% unhtml index.html > index.txt

BUGS

       Currently, if the output is redirected to a file of the same name as the input file, the result will be an empty file of the same name, but
       this is really an idiosyncracy of the redirect operator, and cannot be corrected in the program.

DEVELOPMENT

       This document is Copyright (C) 1998 by Kevin Swan.

								  3 February 1998							 UNHTML(1)

HTML::Filter(3) 					User Contributed Perl Documentation					   HTML::Filter(3)

NAME

       HTML::Filter - Filter HTML text through the parser

NOTE

       This module is deprecated. The "HTML::Parser" now provides the functionally of "HTML::Filter" much more efficiently with the the "default"
       handler.

SYNOPSIS

	require HTML::Filter;
	$p = HTML::Filter->new->parse_file("index.html");

DESCRIPTION

       "HTML::Filter" is an HTML parser that by default prints the original text of each HTML element (a slow version of cat(1) basically).  The
       callback methods may be overridden to modify the filtering for some HTML elements and you can override output() method which is called to
       print the HTML text.

       "HTML::Filter" is a subclass of "HTML::Parser". This means that the document should be given to the parser by calling the $p->parse() or
       $p->parse_file() methods.

EXAMPLES

       The first example is a filter that will remove all comments from an HTML file.  This is achieved by simply overriding the comment method to
       do nothing.

	 package CommentStripper;
	 require HTML::Filter;
	 @ISA=qw(HTML::Filter);
	 sub comment { }  # ignore comments

       The second example shows a filter that will remove any <TABLE>s found in the HTML file.	We specialize the start() and end() methods to
       count table tags and then make output not happen when inside a table.

	 package TableStripper;
	 require HTML::Filter;
	 @ISA=qw(HTML::Filter);
	 sub start
	 {
	    my $self = shift;
	    $self->{table_seen}++ if $_[0] eq "table";
	    $self->SUPER::start(@_);
	 }

	 sub end
	 {
	    my $self = shift;
	    $self->SUPER::end(@_);
	    $self->{table_seen}-- if $_[0] eq "table";
	 }

	 sub output
	 {
	     my $self = shift;
	     unless ($self->{table_seen}) {
		 $self->SUPER::output(@_);
	     }
	 }

       If you want to collect the parsed text internally you might want to do something like this:

	 package FilterIntoString;
	 require HTML::Filter;
	 @ISA=qw(HTML::Filter);
	 sub output { push(@{$_[0]->{fhtml}}, $_[1]) }
	 sub filtered_html { join("", @{$_[0]->{fhtml}}) }

SEE ALSO

       HTML::Parser

COPYRIGHT

       Copyright 1997-1999 Gisle Aas.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.2							    2008-04-04							   HTML::Filter(3)