HTML::FromText(3pm)					User Contributed Perl Documentation				       HTML::FromText(3pm)

NAME

       HTML::FromText - Convert plain text to HTML.

SYNOPSIS

	   use HTML::FromText;
	   text2html( $text, %options );

	   # or

	   use HTML::FromText ();
	   my $t2h  = HTML::FromText->new( \%options );
	   my $html = $t2h->parse( $html );

DESCRIPTION

       "HTML::FromText" converts plain text to HTML. There are a handfull of options that shape the conversion. There is a utility function,
       "text2html", that's exported by default. This function is simply a short- cut to the Object Oriented interface described in detail below.

       Methods

       The following methods may be used as the public interface.

       new

	   my $t2h = HTML::FromText->new({
	       paras	  => 1,
	       blockcode  => 1,
	       tables	  => 1,
	       bullets	  => 1,
	       numbers	  => 1,
	       urls	  => 1,
	       email	  => 1,
	       bold	  => 1,
	       underline  => 1,
	   });

       Constructs a new "HTML::FromText" object using the given configuration. The resulting object can parse lots of objects using the "parse"
       method.

       Options to "new" are passed by name, with the value being either true or false. If true, the option will be turned on. If false, it will be
       turned off.  The following outlines all the options.

       Decorators

       metachars
	    This option is on by default.

	    All characters that are unsafe for HTML display will be encoded using "HTML::Entities::encode_entities()".

       urls This option is off by default.

	    Replaces URLs with links.

       email
	    This option is off by default.

	    Replaces email addresses with "mailto:" links.

       bold This option is off by default.

	    Replaces text surrounded by asterisks ("*") with the same text surrounded by "strong" tags.

       underline
	    This option is off by default.

	    Replaces text surrownded by underscores ("_") with the same text surrounded by "span" tags with an underline style.

       Output Modes

       The following are three output modes and the options associated with them. They are listed in order of precidence. If none of these modes
       are supplied, the basic decorators are applied to the text in whole.

       pre  This option is off by default.

	    Wraps the entire text in "pre" tags.

       lines
	    This option is off by default.

	    Preserves line breaks by inserting "br" tags at the end of each line.

	    This mode has further options.

	    spaces
		 This option is off by default.

		 All spaces are HTML encoded.

       paras
	    This option is off by default.

	    Preserves paragraphs by wrapping them in "p" tags.

	    This mode has further options.

	    bullets
		 This option is off by default.

		 Convert bulleted lists into unordered lists ("ul"). Bullets can be either an asterisk ("*") or a hyphen ("-"). Lists can be
		 nested.

	    numbers
		 This option is off by default.

		 Convert numbered lists into ordered lists ("ol"). Numbered lists are identified by numerals. Lists may be nested.

	    headings
		 This option is off by default.

		 Convert paragraphs identified as headings into HTML headings at the appropriate level. The heading "1. Top" would be heading
		 level one ("h1"). The heading "2.5.1. Blah" would be heading level three ("h3").

	    title
		 This option is off by default.

		 Convert the first paragraph to a heading level one ("h1").

	    tables
		 This option is off by default.

		 Convert paragraphs identified as tables to HTML tables. Tables are two or more rows and two or more columns. Columns should be
		 separated by two or more spaces.

	    The following options apply specifically to indented paragraphs. They are listed in order of precidence.

	    blockparas
		 This option is off by default.

		 Convert indented paragraphs to block quotes using the "blockquote" tag.

	    blockquotes
		 Convert indented paragraphs as "blockparas" would, but also preserving line breaks.

	    blockcode
		 Convert indented paragraphs as "blockquotes" would, but also preserving spaces using "pre" tags.

       parse

	 my $html = $t2h->parse( $text );

       Parses text supplied as a single scalar string and returns the HTML as a single scalar string.  All the tabs in your text will be expanded
       using "Text::Tabs::expand()".

       Functions

       text2html

	   my $html = text2html(
				$text,
				urls  => 1,
				email => 1,
			       );

       Functional interface that just wraps the OO interface. This function is exported by default. If you don't want it you can "require" the
       module or "use" it with an empty list.

	   require HTML::FromText;
	   # or ...
	   use HTML::FromText ();

       Subclassing

       Note: At the time of this release, the internals of "HTML::FromText" are in a state of development and cannot be expected to stay the same
       from release to release. I expect that release version 3.00 will be analogous to a 1.00 release of other software. This is because the cur-
       rent maintainer has rewritten this distribution from the ground up for the "2.x" series.  You have been warned.

       The following methods may be used for subclassing "HTML::FromText" to create your own text to HTML conversions. Each of these methods is
       passed just one argument, the object ($self), unless otherwise stated.

       The structure of $self is as follows for this release.

	   {
	    options => {
			option_name => $value,
			...
		       },
	    text    => $text, # as passed to parse(), with tabs expanded
	    html    => $html, # the HTML that will be returned from parse()
	   }

       pre

       Used when "pre" mode is specified.

       Should set "$self->{html}".

       Return value is ignored.

       lines

       Used when "lines" mode is specified.

       Implements the "spaces" option internally when the option is set to a true value.

       Should set "$self->{html}".

       Return value is ignored.

       paras

       Used when the "paras" mode is specified.

       Splits "$self->{text}" into paragraphs internally and sets up "$self->{paras}" as follows.

	   paras => {
		     0 => {
			   text => $text, # paragraph text
			   html => $html, # paragraph html
			  },
		     ... # and so on for all paragraphs
		    },

       Implements the "title" option internally when the option is turned on.

       Converts any normal paragraphs to HTML paragraphs (surrounded by "p" tags) internally.

       Should set "$self->{html}".

       Return value is ignored.

       headings

       Used to format headings when the "headings" option is turned on.

       Return value is ignored.

       bullets

       Format bulleted lists when the "bullets" option is turned on.

       Return value is ignored.

       numbers

       Format numbered lists when the "numbers" option is turned on.

       Return value is ignored.

       tables

       Format tables when the "tables" option is turned on.

       Return value is ignored.

       blockparas

       Used when the "blockparas" option is turned on.

       Return value is ignored.

       blockquotes

       Used when the "blockquotes" option is turned on.

       Return value is ignored.

       blockcode

       Used when the "blockcode" option is turned on.

       Return value is ignored.

       urls

       Turn urls into links when "urls" option is turned on.

       Should operate on "$self->{html}".

       Return value is ignored.

       email

       Turn email addresses into "mailto:" links when "email" option is turned on.

       Should operate on "$self->{html}".

       Return value is ignored.

       underline

       Underline things between _underscores_ when "underline" option is turned on.

       Should operate on "$self->{html}".

       Return value is ignored.

       bold

       Bold things between *asterisks* when "bold" option is turned on.

       Should operate on "$self->{html}".

       Return value is ignored.

       metachars

       Encode meta characters when "metachars" option is turned on.

       Should operate on "$self->{html}".

       Return value is ignored.

       Output

       The output from "HTML::FromText" has been updated to pass XHTML 1.1 validation. Every HTML tag that should have a CSS class name does. They
       are prefixed with "hft-" and correspond to the names of the options to "new()" (or "text2html()"). For example "hft-lines", "hft-paras",
       and "hft-urls".

       One important note is the output for "underline". Because the <u> tag is deprecated in this specification a "span" is used with a style
       attribute of "text-decoration: underline". The class is "hft- underline". If you want to override the "text-decoration" style in the CSS
       class you'll need to do so like this.

	   text-decoration: none !important;

SEE ALSO

       text2html(1).

AUTHOR

       Casey West <casey@geeknest.com>.

AUTHOR EMERITUS

       Gareth Rees <garethr@cre.canon.co.uk>.

COPYRIGHT

	 Copyright (c) 2003 Casey West.  All rights reserved.
	 This module is free software; you can redistribute it and/or modify it
	 under the same terms as Perl itself.

perl v5.8.8							    2003-10-14						       HTML::FromText(3pm)