txt2tags.php - This PHP code outputs a web interface for co…

/extras/txt2tags.php

http://txt2tags.googlecode.com/ · PHP · 261 lines · 173 code · 44 blank · 44 comment · 19 complexity · 0d5be4b524ef5aeb1e13fcc79c5aeed3 MD5 · raw file


<? # txt2tags.php (http://txt2tags.org)
   # A handy web interface for the txt2tags conversion tool
   # License: GPL
   #
   # 2002-03-22 Aurelio Jargas <verde@aurelio.net>
   # 2004-06-26 Aurelio: v2.0: %%date, photo, s/orange/blue/, XHTML target,
   #            CSS, work in new PHP, --enum-title, show parsed x?html
   # 2004-10-20 Aurelio: v2.1: Text capitalized, using button instead photo
   # 2004-12-28 Aurelio: v2.2: Lout target
   # 2005-05-28 Aurelio: v2.3: link: s/sample.t2t/markup.html/, gray table
   # 2006-07-24 Aurelio: v2.4: rewrote. Now configurable, clean and modular
   #            Form using labels and fieldset, --toc, hints simplified
   # 2008-07-08 Aurelio: v2.5: is_standalone flag to turn headers on/off
   # 2010-10-22 Aurelio: v2.6: new targets, $dfttarget, targets alpha order


#-----------------------------[ CONFIG ]-----------------------------
#
# The txt2tags program location (PATH)
#
$prog = "./txt2tags";

# Set to 1 to use this file alone (will print page headers)
# Set to 0 to use this file inserted on another .php (embedded)
$is_standalone = 1;

# The default target
$dtftarget = "html";

# The default text encoding
$dtfencoding = "UTF-8";

# The default marked text
#
$dfttxt = "= My Title =";
$dfttxt.= "\nA __paragraph__ with **bold** and //italic//.\n";
$dfttxt.= "\nToday is %%date(%c).";
$dfttxt.= "\nHere is a nice pic: [img/t2tpowered.png].\n";
$dfttxt.= "\n  | John |  33  |    Male |";
$dfttxt.= "\n  | Mary |  19  |  Female |";

# The options labels for the form
#
$labels = array(
	'target'    => 'Target',
	'noheaders' => 'Hide headers',
	'enumtitle' => 'Numbered titles',
	'toc'       => 'Table Of Contents',
	'csssugar'  => 'CSS Sugar (HTML and XHTML)'
);

# The available targets
#
$targets = array(
	'art'    => 'ASCII Art text',
	'adoc'   => 'AsciiDoc document',
	'creole' => 'Creole 1.0 document',
	'dbk'    => 'DocBook document',
	'doku'   => 'DokuWiki page',
	'gwiki'  => 'Google Wiki page',
	'html'   => 'HTML page',
	'tex'    => 'LaTeX document',
	'lout'   => 'Lout document',
	'mgp'    => 'MagicPoint slides',
	'moin'   => 'MoinMoin page',
	'pm6'    => 'PageMaker document',
	'txt'    => 'Plain Text (no marks)',
	'pmw'    => 'PmWiki page',
	'sgml'   => 'SGML document',
	'man'    => 'UNIX Manual page',
	'wiki'   => 'Wikipedia page',
	'xhtml'  => 'XHTML page'
);


#----------------------------[ FUNCTIONS ]---------------------------

function FormSelect($name, $arr, $selected='', $size=0) {
	if ($size == 0) $size = count($arr);
	$r = "\n<select id=\"$name\" name=\"$name\" size=\"$size\">\n";
	while (list($id, $txt) = each($arr)) {
		$sel = ($id == $selected) ? ' selected' : '';
		$r .= "<option value=\"$id\"$sel>$txt</option>\n";
	}
	$r .= "</select>\n";
	return $r;
}

function FormCheck($name, $value, $on=0){
	$on = ($on) ? 'checked' : '';
	return "<input type=\"checkbox\" id=\"$name\" name=\"$name\" value=\"$value\" $on>";
}

function FormLabel($name) {
	global $labels;
	return "<label for=\"$name\">{$labels[$name]}</label>";
	}

function getvar($name){
	eval('global $'.$name.';');         # first try the global one
	eval('$val = $'.$name.';');
	if (!$val) $val = $_SERVER[$name];  # if not found, try others
	if (!$val) $val = $_POST[$name];
	# echo "<p>key: <b>$name</b>, value: <b>$val</b>---</p>"; 
	return $val;
}


#-----------------------------[ INIT ]----------------------------

$myself    = getvar('PHP_SELF');
$txt       = getvar('txt');
$target    = getvar('target');
$noheaders = getvar('noheaders');
$enumtitle = getvar('enumtitle');
$toc       = getvar('toc');
$csssugar  = getvar('csssugar');

if (!$txt) $txt = $dfttxt;
if (!$target) $noheaders = '-H';    # Default ON


#---------------------------[ HEADERS ]----------------------------

if ($is_standalone) {

?>

<html>
<head><title>txt2tags // ONE source, MULTI targets</title>

<style type="text/css">
	body { margin:20px; padding:0; }
	h1 { border-bottom:1px solid black; }
	form { margin-top:3em; font-size:85%; }
	fieldset { background:#ffc; margin:0 0 1em 0; border:1px solid #ddd; width:40em; }
	textarea { font-size:90%; }
	table#markuphint { float:right; background:#ffa; border:1px solid #ccc; font-size:90%; }
	table#markuphint tr { line-height:100%; }
	table#markuphint td { padding:0 7px; }
	pre#output { margin-left:3em; overflow:auto; }
	#parsed { border:1px solid #999; margin:0 2em 2em 3em; padding:1em; }
	#parsed td { border-style:solid; }
	#footer { border-top:1px solid black; }
</style>

</head>
<body>

<h1>txt2tags WEB Interface</h1>

<?
}

#------------------------------[ FORM ]------------------------------
?>
<form id="userinput" method="post" action="<? $myself ?>">

<fieldset>
	<legend>Text Source</legend>
	<textarea name="txt" rows="8" cols="53"><? echo $txt ?></textarea>
</fieldset>
<br>
<fieldset>
	<legend>Options</legend>

	<table id="markuphint">
	<caption>Markup Hints</caption>
	<tr>
		<td>**bold**</td>
		<td>= title =</td>
		<td>%%date</td>
	</tr><tr>
		<td>//italic//</td>
		<td>- list</td>
		<td>[image.jpg]</td>
	</tr><tr>
		<td>__under__</td>
		<td>+ numlist</td>
		<td colspan="2">[link www.com]</td>
	</tr><tr>
		<td>--strike--</td>
		<td>``code``</td>
		<td>| table |</td>
	</tr>
	</table>	
	
	<?
	echo FormLabel('target').FormSelect('target', $targets, $target ? $target : $dtftarget, 1);
	echo '<br><br>';
	echo FormCheck('noheaders', '--no-headers', $noheaders);
	echo FormLabel('noheaders').'<br>';
	echo FormCheck('enumtitle', '-n', $enumtitle);
	echo FormLabel('enumtitle').'<br>';
	echo FormCheck('toc', '--toc', $toc);
	echo FormLabel('toc').'<br>';
# Mmmmm, no.
#	echo FormCheck('csssugar', '--css-sugar', $csssugar);
#	echo FormLabel('csssugar').'<br>';
	?>
</fieldset>
<br>
<input type="submit" value="Convert!">
</form>
   
<?
#----------------------------[ PROCESSING ]--------------------------

if ($target){

	# Always empty headers on input
	$txt = escapeshellarg("\n$txt");
	
	# Compose command line
	$cmd = array();
	if ($noheaders) $cmd[] = $noheaders;
	if ($enumtitle) $cmd[] = $enumtitle;
	if ($toc      ) $cmd[] = $toc;
	if ($csssugar ) $cmd[] = $csssugar;
	$cmd[] = "--encoding $dtfencoding";
	$cmd[] = "-t $target";
	$cmd[] = "-i -";
	$cmd[] = "-o -";
	
	# Security: Remove symbols from command line
	$cmd = ereg_replace('[^A-Za-z0-9 -]', '', implode(' ', $cmd));

	# Show results
	?>	
	<h3>Text converted to <? echo strtoupper($target) ?></h3>

	<pre id="output"><? echo htmlspecialchars(`echo $txt | $prog $cmd`) ?>
	</pre>
	
	<?
	if ($target == 'html' || $target == 'xhtml') {
	?>
		<h3><? echo strtoupper($target) ?> parsed</h3>

		<div id="parsed">
		<? echo `echo $txt | $prog -H $cmd` ?>
		</div>
	<?
	}
}

#----------------------------[ FOOTER ]--------------------------

if ($is_standalone) {
?>

<p id="footer">
Txt2tags site: <a href="http://txt2tags.org">http://txt2tags.org</a><br>
Author: <a href="http://aurelio.net/en/">Aurelio Jargas</a>
</p>

</body>
</html>
<?
}
?>

Summary ✨

This PHP code outputs a web interface for converting plain text to various markup formats, such as HTML and XHTML. It allows users to input their text, select options (e.g., bold, italic, links), and submit the conversion request. The output displays the converted text in the selected format, along with any errors or warnings that occur during processing.

Alerts (16)

'<?' Short <? tags detected; use full <?php tags for server compatibility
1 161 230 232 238 241
'global $' Use of global variables; prefer dependency injection or function parameters
95 100
'eval(' Use of eval() poses a severe security risk; refactor to avoid dynamic code execution
100 101
'$_POST[' Unbounded request input detected; limit size (e.g., check Content-Length or use max input vars) to prevent memory exhaustion
103
Complexity hotspot; lines 216 to 219 (total complexity: 4)
216 217 218 219
Complexity hotspot; line 236 (total complexity: 4)
236