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<?php
/**
* Generic exception that we know has come from the Loco plugin
*/
class Loco_error_Exception extends Exception implements JsonSerializable {
const LEVEL_ERROR = 0;
const LEVEL_WARNING = 1;
const LEVEL_DEBUG = 2;
const LEVEL_NOLOG = 3;
/**
* Links to help docs etc.. to show along side error message
* @var array
*/
private $links = [];
/**
* Override file in which exception was thrown
* @var string
*/
private $_file;
/**
* Override line number from where exception was thrown
* @var int
*/
private $_line;
/**
* Whether log file writing is enabled
* @var bool
*/
private $_log = true;
/**
* {@inheritdoc}
*/
public function __construct( $message = '', $code = 0, $previous = null ) {
parent::__construct( $message, $code, $previous );
}
/**
* @return Throwable
*/
private function getRootException(){
$current = $this;
// note that getPrevious is absent in PHP < 5.3
while( method_exists($current,'getPrevious') && ( $next = $current->getPrevious() ) ){
$current = $next;
}
return $current;
}
/**
* @return string
*/
public function getRealFile(){
if( $this->_file ){
return $this->_file;
}
return $this->getRootException()->getFile();
}
/**
* @return int
*/
public function getRealLine(){
if( $this->_line ){
return $this->_line;
}
return $this->getRootException()->getLine();
}
/**
* @return array
*/
public function getRealTrace(){
return $this->getRootException()->getTrace();
}
/**
* @param int $depth number of levels up from callee
* @return Loco_error_Exception
*/
public function setCallee( $depth = 0, array $stack = null ){
if( is_null($stack) ) {
$stack = debug_backtrace(0);
}
$callee = $stack[$depth];
$this->_file = $callee['file'];
$this->_line = $callee['line'];
// TODO could also log the stack trace from $depth upwards, but not required unless being logged or thrown
return $this;
}
/**
* Write this error to file regardless of log level
* @return void
*/
public function log(){
$file = new Loco_fs_File( $this->getRealFile() );
$path = $file->getRelativePath( loco_plugin_root() );
$text = sprintf('[Loco.%s] "%s" in %s:%u', $this->getType(), $this->getMessage(), $path, $this->getRealLine() );
// separate error log for cli tests
if( 'cli' === PHP_SAPI && defined('LOCO_TEST_DATA_ROOT') ){
error_log( '['.date('c').'] '.$text."\n", 3, 'debug.log' );
//fwrite( STDERR, $this->getType().': '.$this->getMessage()."\n" );
}
// Else write to default PHP log, but note that WordPress may have set this to wp-content/debug.log.
// If no `error_log` is set this will send message to the SAPI, so check your httpd/fast-cgi errors too.
else {
error_log( $text, 0 );
}
}
/**
* Get view template for rendering error to HTML.
* @return string path relative to root tpl directory
*/
public function getTemplate(){
return 'admin/errors/generic';
}
/**
* Get notice level short code as a string
* @return string
*/
public function getType(){
return 'error';
}
/**
* Get verbosity level
* @return int
*/
public function getLevel(){
return self::LEVEL_ERROR;
}
/**
* Call wp cli logging function
* @return void
*/
public function logCli(){
WP_CLI::error( $this->getMessage(), false );
}
/**
* Get localized notice level name
* @return string
*/
public function getTitle(){
return __('Error','loco-translate');
}
/**
* @return array
*/
#[ReturnTypeWillChange]
public function jsonSerialize(){
$a = [
'code' => $this->getCode(),
'type' => $this->getType(),
'title' => $this->getTitle(),
'message' => $this->getMessage(),
];
/*if( loco_debugging() ){
$a['file'] = str_replace( ABSPATH, '', $this->getRealFile() );
$a['line'] = $this->getRealLine();
$a = self::recurseJsonSerialize($a,$this);
}*/
return $a;
}
/**
* @param string[] $a
* @return array modified from $a
* @codeCoverageIgnore
*/
private static function recurseJsonSerialize( array $a, Exception $child ){
$a['class'] = get_class($child);
$a['trace'] = $child->getTraceAsString();
$parent = $child->getPrevious();
if( $parent instanceof Exception ){
$a['previous'] = self::recurseJsonSerialize([],$parent);
}
return $a;
}
/**
* Push navigation links into error. Use for help pages etc..
* @param string $href
* @param string $text
* @return Loco_error_Exception
*/
public function addLink( $href, $text ){
$this->links[] = sprintf('<a href="%s">%s</a>', esc_url($href), esc_html($text) );
return $this;
}
/**
* @return array
*/
public function getLinks(){
return $this->links;
}
/**
* Convert generic exception to one of ours
* @param Exception $e original error
* @return Loco_error_Exception
*/
public static function convert( Exception $e ){
if( $e instanceof Loco_error_Exception ){
return $e;
}
return new Loco_error_Exception( $e->getMessage(), $e->getCode(), $e );
}
/**
* Test if this error should be automatically logged
* @return bool
*/
public function loggable(){
if( $this->_log ){
// Log messages of minimum priority and up, depending on debug mode
// note that non-debug level is in line with error_reporting set by WordPress (notices ignored)
$priority = loco_debugging() ? Loco_error_Exception::LEVEL_DEBUG : Loco_error_Exception::LEVEL_WARNING;
return $this->getLevel() <= $priority;
}
return false;
}
/**
* Suppress logging for this error. e.g if you want to warn in UI but don't want to pollute log files.
* @return self
*/
public function noLog(){
$this->_log = false;
return $this;
}
/**
* Check if passed exception is effectively the same as this one
* @return bool
*/
public function isIdentical( Exception $other ){
return $this->getCode() === $other->getCode()
&& $this->getMessage() === $other->getMessage()
&& $this->getType() === ( $other instanceof Loco_error_Exception ? $other->getType() : 0 );
}
}
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