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#!/usr/bin/env php
<?php
/**
* vp8_doc_tools.php - Functions used when generating the
* On2 VP8 user documentation.
*
* Requirements
*
* PHP Markdown Extra
* http://michelf.com/projects/php-markdown/extra/
*
* PHP SmartyPants
* http://michelf.com/projects/php-smartypants/
*
* GeSHI
* http://qbnz.com/highlighter/
*
* ASCIIMathPHP
* http://tinyurl.com/asciimathphp
*
* HTML::Toc
* http://search.cpan.org/~fvulto/HTML-Toc-0.91/Toc.pod
*
*
* April 2009 - Lou Quillio <lou.quillio@on2.com>
*
**********************************************************/
// Includes
include_once('PHP-Markdown-Extra-1.2.3/markdown.php');
include_once('PHP-SmartyPants-1.5.1e/smartypants.php');
include_once('ASCIIMathPHP-2.0/ASCIIMathPHP-2.0.cfg.php');
require_once('ASCIIMathPHP-2.0/ASCIIMathPHP-2.0.class.php');
include_once('geshi/geshi.php');
// Paths and Scripts
$geshi_lang = 'geshi/geshi/'; // GeSHi language files
$toc_script = './do_toc.pl';
/**
* ASCIIMathML parser
* http://tinyurl.com/ASCIIMathPHP
*
* @PARAM mtch_arr array - Array of ASCIIMath expressions
* as returned by preg_replace_callback([pattern]). First
* dimension is the full matched string (with delimiter);
* 2nd dimension is the undelimited contents (typically
* a capture group).
*
**********************************************************/
function ASCIIMathPHPCallback($mtch_arr)
{
$txt = trim($mtch_arr[1]);
static $asciimath;
if (!isset($asciimath)) $asciimath = new ASCIIMathPHP($symbol_arr);
$math_attr_arr = array('displaystyle' => 'true');
$asciimath->setExpr($txt);
$asciimath->genMathML($math_attr_arr);
return($asciimath->getMathML());
}
/**
* fix_asciiMath()
*
* ASCIIMath pretty-prints its output, with linefeeds
* and tabs. Causes unexpected behavior in some renderers.
* This flattens <math> blocks.
*
* @PARAM page_body str - The <body> element of an
* XHTML page to transform.
*
**********************************************************/
function fix_asciiMath($page_body)
{
$out = FALSE;
// Remove linefeeds and whitespace in <math> elements
$tags_bad = array('/(<math.*?>)\n*\s*/'
, '/(<mstyle.*?>)\n*\s*/'
, '/(<\/mstyle>)\n*\s*/'
, '/(<mrow.*?>)\n*\s*/'
, '/(<\/mrow>)\n*\s*/'
, '/(<mo.*?>)\n*\s*/'
, '/(<\/mo>)\n*\s*/'
, '/(<mi.*?>)\n*\s*/'
, '/(<\/mi>)\n*\s*/'
, '/(<mn.*?>)\n*\s*/'
, '/(<\/mn>)\n*\s*/'
, '/(<mtext.*?>)\n*\s*/'
, '/(<\/mtext>)\n*\s*/'
, '/(<msqrt.*?>)\n*\s*/'
, '/(<\/msqrt>)\n*\s*/'
, '/(<mfrac.*?>)\n*\s*/'
, '/(<\/mfrac>)\n*\s*/'
);
$tags_good = array( '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
, '$1'
);
$out = preg_replace($tags_bad, $tags_good, $page_body);
return $out;
}
/**
* do_geshi() - Performs GeSHi transforms on XHTML blobs
*
* @param $blob str - The blob to transform
* @param $open str - Opening expression to match
* @param $close str - Closing expression to match
* @param $lang str - Language file to use
*
**********************************************************/
function do_geshi($blob, $open = '<pre>',
$close = '</pre>', $lang = 'c')
{
$out = FALSE;
$regexp = '|' . $open . '(.*?)' . $close . '|si';
echo $regexp . "\n\n";
while (preg_match($regexp, $blob, $matches))
{
$geshi = new GeSHi($matches[1], $lang);
$geshi->set_language_path($geshi_lang);
$blob_new = $geshi->parse_code();
// Strip annoying final <br />
$blob_new = preg_replace('/\n <\/pre>/', '</pre>' , $blob_new);
// Fix annoying GeSHI-injected attributes
$blob_new = preg_replace('/<pre.*>/i', '<pre>' , $blob_new);
$blob = preg_replace($regexp, $blob_new, $blob, 1);
unset($geshi);
}
return $out;
}
/**
* prep_dd_codeblocks()
*
* I'm _so_ not proud of this, but don't have time to
* write a proper regex.
*
* @TODO - Write that regex.
*
**********************************************************/
/*
function prep_dd_codeblocks($page_body)
{
$out = FALSE;
$toggle = 0;
$regexp = '/~{3,}/';
while (preg_match($regexp, $page_body))
{
if ($toggle == 0)
{
$regexp = '/:\s*~{3,}\s*\n/';
$page_body = preg_replace($regexp, ': <pre><code>', $page_body, 1);
$toggle = 1;
}
else
{
$regexp = '/\n\s*~{3,}/';
$page_body = preg_replace($regexp, '</code></pre>', $page_body, 1);
$toggle = 0;
}
}
// One more time
$regexp = '/\n\s*~{3,}/';
$page_body = preg_replace($regexp, '</code></pre>', $page_body, 1);
$out = $page_body;
return $out;
}
*/
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