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[1.6.1] Fix bug (== v. ===) that caused merged in attribute definitions to be messed up

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- Make our modified class_exists() check to work in both PHP 4 and 5
(todo: we need some unit tests for ElementDef)

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1023 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2007-05-05 20:04:34 +00:00
parent b1822bb04f
commit 6c08ca4c16
3 changed files with 23 additions and 4 deletions
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24
library/HTMLPurifier/HTMLModuleManager.php
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@ -225,14 +225,14 @@ class HTMLPurifier_HTMLModuleManager
$ok = false;
foreach ($this->prefixes as $prefix) {
$module = $prefix . $original_module;
if (class_exists($module)) {
if ($this->_classExists($module)) {
$ok = true;
break;
}
}
if (!$ok) {
$module = $original_module;
if (!class_exists($module, false)) {
if (!$this->_classExists($module)) {
trigger_error($original_module . ' module does not exist',
E_USER_ERROR);
return;
@ -247,6 +247,23 @@ class HTMLPurifier_HTMLModuleManager
}
}
/**
* Safely tests for class existence without invoking __autoload in PHP5
* @param $name String class name to test
* @private
*/
function _classExists($name) {
static $is_php_4 = null;
if ($is_php_4 === null) {
$is_php_4 = version_compare(PHP_VERSION, '5', '<');
}
if ($is_php_4) {
return class_exists($name);
} else {
return class_exists($name, false);
}
}
/**
* Makes a collection active, while also making it valid if not
* already done so. See $activeModules for the semantics of "active".
@ -508,7 +525,8 @@ class HTMLPurifier_HTMLModuleManager
$elements = array();
foreach ($this->activeModules as $module) {
foreach ($module->elements as $name) {
foreach ($module->info as $name => $v) {
if (isset($elements[$name])) continue;
$elements[$name] = $this->getElement($name, $config);
}
}