282 lines
6.6 KiB
PHP
282 lines
6.6 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Texy! - human-readable text to HTML converter.
|
|
*
|
|
* @copyright Copyright (c) 2004, 2010 David Grudl
|
|
* @license GNU GENERAL PUBLIC LICENSE version 2 or 3
|
|
* @link http://texy.info
|
|
* @package Texy
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
* Html tags module.
|
|
*
|
|
* @copyright Copyright (c) 2004, 2010 David Grudl
|
|
* @package Texy
|
|
*/
|
|
final class TexyHtmlModule extends TexyModule
|
|
{
|
|
/** @var bool pass HTML comments to output? */
|
|
public $passComment = TRUE;
|
|
|
|
|
|
|
|
public function __construct($texy)
|
|
{
|
|
$this->texy = $texy;
|
|
|
|
$texy->addHandler('htmlComment', array($this, 'solveComment'));
|
|
$texy->addHandler('htmlTag', array($this, 'solveTag'));
|
|
|
|
$texy->registerLinePattern(
|
|
array($this, 'patternTag'),
|
|
'#<(/?)([a-z][a-z0-9_:-]*)((?:\s+[a-z0-9:-]+|=\s*"[^"'.TEXY_MARK.']*"|=\s*\'[^\''.TEXY_MARK.']*\'|=[^\s>'.TEXY_MARK.']+)*)\s*(/?)>#isu',
|
|
'html/tag'
|
|
);
|
|
|
|
$texy->registerLinePattern(
|
|
array($this, 'patternComment'),
|
|
'#<!--([^'.TEXY_MARK.']*?)-->#is',
|
|
'html/comment'
|
|
);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Callback for: <!-- comment -->.
|
|
*
|
|
* @param TexyLineParser
|
|
* @param array regexp matches
|
|
* @param string pattern name
|
|
* @return TexyHtml|string|FALSE
|
|
*/
|
|
public function patternComment($parser, $matches)
|
|
{
|
|
list(, $mComment) = $matches;
|
|
return $this->texy->invokeAroundHandlers('htmlComment', $parser, array($mComment));
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Callback for: <tag attr="...">.
|
|
*
|
|
* @param TexyLineParser
|
|
* @param array regexp matches
|
|
* @param string pattern name
|
|
* @return TexyHtml|string|FALSE
|
|
*/
|
|
public function patternTag($parser, $matches)
|
|
{
|
|
list(, $mEnd, $mTag, $mAttr, $mEmpty) = $matches;
|
|
// [1] => /
|
|
// [2] => tag
|
|
// [3] => attributes
|
|
// [4] => /
|
|
|
|
$tx = $this->texy;
|
|
|
|
$isStart = $mEnd !== '/';
|
|
$isEmpty = $mEmpty === '/';
|
|
if (!$isEmpty && substr($mAttr, -1) === '/') { // uvizlo v $mAttr?
|
|
$mAttr = substr($mAttr, 0, -1);
|
|
$isEmpty = TRUE;
|
|
}
|
|
|
|
// error - can't close empty element
|
|
if ($isEmpty && !$isStart)
|
|
return FALSE;
|
|
|
|
|
|
// error - end element with atttrs
|
|
$mAttr = trim(strtr($mAttr, "\n", ' '));
|
|
if ($mAttr && !$isStart)
|
|
return FALSE;
|
|
|
|
|
|
$el = TexyHtml::el($mTag);
|
|
|
|
if ($isStart) {
|
|
// parse attributes
|
|
$matches2 = NULL;
|
|
preg_match_all(
|
|
'#([a-z0-9:-]+)\s*(?:=\s*(\'[^\']*\'|"[^"]*"|[^\'"\s]+))?()#isu',
|
|
$mAttr,
|
|
$matches2,
|
|
PREG_SET_ORDER
|
|
);
|
|
|
|
foreach ($matches2 as $m) {
|
|
$key = strtolower($m[1]);
|
|
$value = $m[2];
|
|
if ($value == NULL) $el->attrs[$key] = TRUE;
|
|
elseif ($value{0} === '\'' || $value{0} === '"') $el->attrs[$key] = Texy::unescapeHtml(substr($value, 1, -1));
|
|
else $el->attrs[$key] = Texy::unescapeHtml($value);
|
|
}
|
|
}
|
|
|
|
$res = $tx->invokeAroundHandlers('htmlTag', $parser, array($el, $isStart, $isEmpty));
|
|
|
|
if ($res instanceof TexyHtml) {
|
|
return $tx->protect($isStart ? $res->startTag() : $res->endTag(), $res->getContentType());
|
|
}
|
|
|
|
return $res;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Finish invocation.
|
|
*
|
|
* @param TexyHandlerInvocation handler invocation
|
|
* @param TexyHtml element
|
|
* @param bool is start tag?
|
|
* @param bool is empty?
|
|
* @return TexyHtml|string|FALSE
|
|
*/
|
|
public function solveTag($invocation, TexyHtml $el, $isStart, $forceEmpty = NULL)
|
|
{
|
|
$tx = $this->texy;
|
|
|
|
// tag & attibutes
|
|
$allowedTags = $tx->allowedTags; // speed-up
|
|
if (!$allowedTags)
|
|
return FALSE; // all tags are disabled
|
|
|
|
// convert case
|
|
$name = $el->getName();
|
|
$lower = strtolower($name);
|
|
if (isset($tx->dtd[$lower]) || $name === strtoupper($name)) {
|
|
// complete UPPER convert to lower
|
|
$name = $lower;
|
|
$el->setName($name);
|
|
}
|
|
|
|
if (is_array($allowedTags)) {
|
|
if (!isset($allowedTags[$name])) return FALSE;
|
|
$allowedAttrs = $allowedTags[$name]; // allowed attrs
|
|
|
|
} else {
|
|
// allowedTags === Texy::ALL
|
|
if ($forceEmpty) $el->setName($name, TRUE);
|
|
$allowedAttrs = Texy::ALL; // all attrs are allowed
|
|
}
|
|
|
|
// end tag? we are finished
|
|
if (!$isStart) {
|
|
return $el;
|
|
}
|
|
|
|
$elAttrs = & $el->attrs;
|
|
|
|
// process attributes
|
|
if (!$allowedAttrs) {
|
|
$elAttrs = array();
|
|
|
|
} elseif (is_array($allowedAttrs)) {
|
|
|
|
// skip disabled
|
|
$allowedAttrs = array_flip($allowedAttrs);
|
|
foreach ($elAttrs as $key => $foo)
|
|
if (!isset($allowedAttrs[$key])) unset($elAttrs[$key]);
|
|
}
|
|
|
|
// apply allowedClasses
|
|
$tmp = $tx->_classes; // speed-up
|
|
if (isset($elAttrs['class'])) {
|
|
if (is_array($tmp)) {
|
|
$elAttrs['class'] = explode(' ', $elAttrs['class']);
|
|
foreach ($elAttrs['class'] as $key => $value)
|
|
if (!isset($tmp[$value])) unset($elAttrs['class'][$key]); // id & class are case-sensitive
|
|
|
|
} elseif ($tmp !== Texy::ALL) {
|
|
$elAttrs['class'] = NULL;
|
|
}
|
|
}
|
|
|
|
// apply allowedClasses for ID
|
|
if (isset($elAttrs['id'])) {
|
|
if (is_array($tmp)) {
|
|
if (!isset($tmp['#' . $elAttrs['id']])) $elAttrs['id'] = NULL;
|
|
} elseif ($tmp !== Texy::ALL) {
|
|
$elAttrs['id'] = NULL;
|
|
}
|
|
}
|
|
|
|
// apply allowedStyles
|
|
if (isset($elAttrs['style'])) {
|
|
$tmp = $tx->_styles; // speed-up
|
|
if (is_array($tmp)) {
|
|
$styles = explode(';', $elAttrs['style']);
|
|
$elAttrs['style'] = NULL;
|
|
foreach ($styles as $value) {
|
|
$pair = explode(':', $value, 2);
|
|
$prop = trim($pair[0]);
|
|
if (isset($pair[1]) && isset($tmp[strtolower($prop)])) // CSS is case-insensitive
|
|
$elAttrs['style'][$prop] = $pair[1];
|
|
}
|
|
} elseif ($tmp !== Texy::ALL) {
|
|
$elAttrs['style'] = NULL;
|
|
}
|
|
}
|
|
|
|
if ($name === 'img') {
|
|
if (!isset($elAttrs['src'])) return FALSE;
|
|
|
|
if (!$tx->checkURL($elAttrs['src'], Texy::FILTER_IMAGE)) return FALSE;
|
|
|
|
$tx->summary['images'][] = $elAttrs['src'];
|
|
|
|
} elseif ($name === 'a') {
|
|
if (!isset($elAttrs['href']) && !isset($elAttrs['name']) && !isset($elAttrs['id'])) return FALSE;
|
|
if (isset($elAttrs['href'])) {
|
|
if ($tx->linkModule->forceNoFollow && strpos($elAttrs['href'], '//') !== FALSE) {
|
|
if (isset($elAttrs['rel'])) $elAttrs['rel'] = (array) $elAttrs['rel'];
|
|
$elAttrs['rel'][] = 'nofollow';
|
|
}
|
|
|
|
if (!$tx->checkURL($elAttrs['href'], Texy::FILTER_ANCHOR)) return FALSE;
|
|
|
|
$tx->summary['links'][] = $elAttrs['href'];
|
|
}
|
|
|
|
} elseif (preg_match('#^h[1-6]#i', $name)) {
|
|
$tx->headingModule->TOC[] = array(
|
|
'el' => $el,
|
|
'level' => (int) substr($name, 1),
|
|
'type' => 'html',
|
|
);
|
|
}
|
|
|
|
$el->validateAttrs($tx->dtd);
|
|
|
|
return $el;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Finish invocation.
|
|
*
|
|
* @param TexyHandlerInvocation handler invocation
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
public function solveComment($invocation, $content)
|
|
{
|
|
if (!$this->passComment) return '';
|
|
|
|
// sanitize comment
|
|
$content = preg_replace('#-{2,}#', '-', $content);
|
|
$content = trim($content, '-');
|
|
|
|
return $this->texy->protect('<!--' . $content . '-->', Texy::CONTENT_MARKUP);
|
|
}
|
|
|
|
}
|