Developer
<?php
/**
* Error collection class that enables HTML Purifier to report HTML
* problems back to the user
*/
class HTMLPurifier_ErrorCollector
{
/**
* Identifiers for the returned error array. These are purposely numeric
* so list() can be used.
*/
const LINENO = 0;
const SEVERITY = 1;
const MESSAGE = 2;
const CHILDREN = 3;
/**
* @type array
*/
protected $errors;
/**
* @type array
*/
protected $_current;
/**
* @type array
*/
protected $_stacks = array(array());
/**
* @type HTMLPurifier_Language
*/
protected $locale;
/**
* @type HTMLPurifier_Generator
*/
protected $generator;
/**
* @type HTMLPurifier_Context
*/
protected $context;
/**
* @type array
*/
protected $lines = array();
/**
* @param HTMLPurifier_Context $context
*/
public function __construct($context)
{
$this->locale =& $context->get('Locale');
$this->context = $context;
$this->_current =& $this->_stacks[0];
$this->errors =& $this->_stacks[0];
}
/**
* Sends an error message to the collector for later use
* @param int $severity Error severity, PHP error style (don't use E_USER_)
* @param string $msg Error message text
*/
public function send($severity, $msg)
{
$args = array();
if (func_num_args() > 2) {
$args = func_get_args();
array_shift($args);
unset($args[0]);
}
$token = $this->context->get('CurrentToken', true);
$line = $token ? $token->line : $this->context->get('CurrentLine', true);
$col = $token ? $token->col : $this->context->get('CurrentCol', true);
$attr = $this->context->get('CurrentAttr', true);
// perform special substitutions, also add custom parameters
$subst = array();
if (!is_null($token)) {
$args['CurrentToken'] = $token;
}
if (!is_null($attr)) {
$subst['$CurrentAttr.Name'] = $attr;
if (isset($token->attr[$attr])) {
$subst['$CurrentAttr.Value'] = $token->attr[$attr];
}
}
if (empty($args)) {
$msg = $this->locale->getMessage($msg);
} else {
$msg = $this->locale->formatMessage($msg, $args);
}
if (!empty($subst)) {
$msg = strtr($msg, $subst);
}
// (numerically indexed)
$error = array(
self::LINENO => $line,
self::SEVERITY => $severity,
self::MESSAGE => $msg,
self::CHILDREN => array()
);
$this->_current[] = $error;
// NEW CODE BELOW ...
// Top-level errors are either:
// TOKEN type, if $value is set appropriately, or
// "syntax" type, if $value is null
$new_struct = new HTMLPurifier_ErrorStruct();
$new_struct->type = HTMLPurifier_ErrorStruct::TOKEN;
if ($token) {
$new_struct->value = clone $token;
}
if (is_int($line) && is_int($col)) {
if (isset($this->lines[$line][$col])) {
$struct = $this->lines[$line][$col];
} else {
$struct = $this->lines[$line][$col] = $new_struct;
}
// These ksorts may present a performance problem
ksort($this->lines[$line], SORT_NUMERIC);
} else {
if (isset($this->lines[-1])) {
$struct = $this->lines[-1];
} else {
$struct = $this->lines[-1] = $new_struct;
}
}
ksort($this->lines, SORT_NUMERIC);
// Now, check if we need to operate on a lower structure
if (!empty($attr)) {
$struct = $struct->getChild(HTMLPurifier_ErrorStruct::ATTR, $attr);
if (!$struct->value) {
$struct->value = array($attr, 'PUT VALUE HERE');
}
}
if (!empty($cssprop)) {
$struct = $struct->getChild(HTMLPurifier_ErrorStruct::CSSPROP, $cssprop);
if (!$struct->value) {
// if we tokenize CSS this might be a little more difficult to do
$struct->value = array($cssprop, 'PUT VALUE HERE');
}
}
// Ok, structs are all setup, now time to register the error
$struct->addError($severity, $msg);
}
/**
* Retrieves raw error data for custom formatter to use
*/
public function getRaw()
{
return $this->errors;
}
/**
* Default HTML formatting implementation for error messages
* @param HTMLPurifier_Config $config Configuration, vital for HTML output nature
* @param array $errors Errors array to display; used for recursion.
* @return string
*/
public function getHTMLFormatted($config, $errors = null)
{
$ret = array();
$this->generator = new HTMLPurifier_Generator($config, $this->context);
if ($errors === null) {
$errors = $this->errors;
}
// 'At line' message needs to be removed
// generation code for new structure goes here. It needs to be recursive.
foreach ($this->lines as $line => $col_array) {
if ($line == -1) {
continue;
}
foreach ($col_array as $col => $struct) {
$this->_renderStruct($ret, $struct, $line, $col);
}
}
if (isset($this->lines[-1])) {
$this->_renderStruct($ret, $this->lines[-1]);
}
if (empty($errors)) {
return '<p>' . $this->locale->getMessage('ErrorCollector: No errors') . '</p>';
} else {
return '<ul><li>' . implode('</li><li>', $ret) . '</li></ul>';
}
}
private function _renderStruct(&$ret, $struct, $line = null, $col = null)
{
$stack = array($struct);
$context_stack = array(array());
while ($current = array_pop($stack)) {
$context = array_pop($context_stack);
foreach ($current->errors as $error) {
list($severity, $msg) = $error;
$string = '';
$string .= '<div>';
// W3C uses an icon to indicate the severity of the error.
$error = $this->locale->getErrorName($severity);
$string .= "<span class=\"error e$severity\"><strong>$error</strong></span> ";
if (!is_null($line) && !is_null($col)) {
$string .= "<em class=\"location\">Line $line, Column $col: </em> ";
} else {
$string .= '<em class="location">End of Document: </em> ';
}
$string .= '<strong class="description">' . $this->generator->escape($msg) . '</strong> ';
$string .= '</div>';
// Here, have a marker for the character on the column appropriate.
// Be sure to clip extremely long lines.
//$string .= '<pre>';
//$string .= '';
//$string .= '</pre>';
$ret[] = $string;
}
foreach ($current->children as $array) {
$context[] = $current;
$stack = array_merge($stack, array_reverse($array, true));
for ($i = count($array); $i > 0; $i--) {
$context_stack[] = $context;
}
}
}
}
}
// vim: et sw=4 sts=4
Developer
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