friendica/src/Util/Introspection.php

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<?php
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/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
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namespace Friendica\Util;
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/**
* Get Introspection information about the current call
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*/
class Introspection
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{
private $skipStackFramesCount;
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private $skipClassesPartials;
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private $skipFunctions = [
'call_user_func',
'call_user_func_array',
];
/**
* @param array $skipClassesPartials An array of classes to skip during logging
* @param int $skipStackFramesCount If the logger should use information from other hierarchy levels of the call
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*/
public function __construct($skipClassesPartials = array(), $skipStackFramesCount = 0)
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{
$this->skipClassesPartials = $skipClassesPartials;
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$this->skipStackFramesCount = $skipStackFramesCount;
}
/**
* Adds new classes to get skipped
* @param array $classNames
*/
public function addClasses(array $classNames)
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{
$this->skipClassesPartials = array_merge($this->skipClassesPartials, $classNames);
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}
/**
* Returns the introspection record of the current call
*
* @return array
*/
public function getRecord()
{
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$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
$i = 1;
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while ($this->isTraceClassOrSkippedFunction($trace, $i)) {
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$i++;
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}
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$i += $this->skipStackFramesCount;
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return [
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'file' => isset($trace[$i - 1]['file']) ? basename($trace[$i - 1]['file']) : null,
'line' => isset($trace[$i - 1]['line']) ? $trace[$i - 1]['line'] : null,
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'function' => isset($trace[$i]['function']) ? $trace[$i]['function'] : null,
];
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}
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/**
* Checks if the current trace class or function has to be skipped
*
* @param array $trace The current trace array
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* @param int $index The index of the current hierarchy level
*
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* @return bool True if the class or function should get skipped, otherwise false
*/
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private function isTraceClassOrSkippedFunction(array $trace, $index)
{
if (!isset($trace[$index])) {
return false;
}
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if (isset($trace[$index]['class'])) {
foreach ($this->skipClassesPartials as $part) {
if (strpos($trace[$index]['class'], $part) !== false) {
return true;
}
}
} elseif (in_array($trace[$index]['function'], $this->skipFunctions)) {
return true;
}
return false;
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}
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}