ErrorHandler::renderFile() - Code Metrics - Inspection of "Fixes #16903: Fixed 'yii\validators\NumberValidato..." - rob006/yii2-dev - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( bbf2ff...d7ffda )

by Robert

created 2018-11-28 00:27 UTC

ErrorHandler::renderFile() A

↳ Parent: ErrorHandler

Complexity

Conditions	3
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	3.8449

Importance

Changes

Metric	Value
dl	0
loc	17
ccs	6
cts	11
cp	0.5455
rs	9.7
c	0
b	0
f	0
cc	3
nc	2
nop	2
crap	3.8449

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\web;

use Yii;
use yii\base\ErrorException;
use yii\base\Exception;
use yii\base\UserException;
use yii\helpers\VarDumper;

/**
 * ErrorHandler handles uncaught PHP errors and exceptions.
 *
 * ErrorHandler displays these errors using appropriate views based on the
 * nature of the errors and the mode the application runs at.
 *
 * ErrorHandler is configured as an application component in [[\yii\base\Application]] by default.
 * You can access that instance via `Yii::$app->errorHandler`.
 *
 * For more details and usage information on ErrorHandler, see the [guide article on handling errors](guide:runtime-handling-errors).
 *
 * @author Qiang Xue <[email protected]>
 * @author Timur Ruziev <[email protected]>
 * @since 2.0
 */
class ErrorHandler extends \yii\base\ErrorHandler
{
    /**
     * @var int maximum number of source code lines to be displayed. Defaults to 19.
     */
    public $maxSourceLines = 19;
    /**
     * @var int maximum number of trace source code lines to be displayed. Defaults to 13.
     */
    public $maxTraceSourceLines = 13;
    /**
     * @var string the route (e.g. `site/error`) to the controller action that will be used
     * to display external errors. Inside the action, it can retrieve the error information
     * using `Yii::$app->errorHandler->exception`. This property defaults to null, meaning ErrorHandler
     * will handle the error display.
     */
    public $errorAction;
    /**
     * @var string the path of the view file for rendering exceptions without call stack information.
     */
    public $errorView = '@yii/views/errorHandler/error.php';
    /**
     * @var string the path of the view file for rendering exceptions.
     */
    public $exceptionView = '@yii/views/errorHandler/exception.php';
    /**
     * @var string the path of the view file for rendering exceptions and errors call stack element.
     */
    public $callStackItemView = '@yii/views/errorHandler/callStackItem.php';
    /**
     * @var string the path of the view file for rendering previous exceptions.
     */
    public $previousExceptionView = '@yii/views/errorHandler/previousException.php';
    /**
     * @var array list of the PHP predefined variables that should be displayed on the error page.
     * Note that a variable must be accessible via `$GLOBALS`. Otherwise it won't be displayed.
     * Defaults to `['_GET', '_POST', '_FILES', '_COOKIE', '_SESSION']`.
     * @see renderRequest()
     * @since 2.0.7
     */
    public $displayVars = ['_GET', '_POST', '_FILES', '_COOKIE', '_SESSION'];
    /**
     * @var string trace line with placeholders to be be substituted.
     * The placeholders are {file}, {line} and {text} and the string should be as follows.
     *
     * `File: {file} - Line: {line} - Text: {text}`
     *
     * @example <a href="ide://open?file={file}&line={line}">{html}</a>
     * @see https://github.com/yiisoft/yii2-debug#open-files-in-ide
     * @since 2.0.14
     */
    public $traceLine = '{html}';


    /**
     * Renders the exception.
     * @param \Exception|\Error $exception the exception to be rendered.
     */
    protected function renderException($exception)
    {
        if (Yii::$app->has('response')) {
            $response = Yii::$app->getResponse();
            // reset parameters of response to avoid interference with partially created response data
            // in case the error occurred while sending the response.
            $response->isSent = false;
            $response->stream = null;
            $response->data = null;
            $response->content = null;
        } else {
            $response = new Response();
        }

        $response->setStatusCodeByException($exception);

        $useErrorView = $response->format === Response::FORMAT_HTML && (!YII_DEBUG || $exception instanceof UserException);

        if ($useErrorView && $this->errorAction !== null) {
            $result = Yii::$app->runAction($this->errorAction);
            if ($result instanceof Response) {
                $response = $result;
            } else {
                $response->data = $result;
            }
        } elseif ($response->format === Response::FORMAT_HTML) {
            if ($this->shouldRenderSimpleHtml()) {
                // AJAX request
                $response->data = '<pre>' . $this->htmlEncode(static::convertExceptionToString($exception)) . '</pre>';
            } else {
                // if there is an error during error rendering it's useful to
                // display PHP error in debug mode instead of a blank screen
                if (YII_DEBUG) {
                    ini_set('display_errors', 1);
                }
                $file = $useErrorView ? $this->errorView : $this->exceptionView;
                $response->data = $this->renderFile($file, [
                    'exception' => $exception,
                ]);
            }
        } elseif ($response->format === Response::FORMAT_RAW) {
            $response->data = static::convertExceptionToString($exception);
        } else {
            $response->data = $this->convertExceptionToArray($exception);
        }

        $response->send();
    }

    /**
     * Converts an exception into an array.
     * @param \Exception|\Error $exception the exception being converted
     * @return array the array representation of the exception.
     */
    protected function convertExceptionToArray($exception)
    {
        if (!YII_DEBUG && !$exception instanceof UserException && !$exception instanceof HttpException) {
            $exception = new HttpException(500, Yii::t('yii', 'An internal server error occurred.'));
        }

        $array = [
            'name' => ($exception instanceof Exception || $exception instanceof ErrorException) ? $exception->getName() : 'Exception',
            'message' => $exception->getMessage(),
            'code' => $exception->getCode(),
        ];
        if ($exception instanceof HttpException) {
            $array['status'] = $exception->statusCode;
        }
        if (YII_DEBUG) {
            $array['type'] = get_class($exception);
            if (!$exception instanceof UserException) {
                $array['file'] = $exception->getFile();
                $array['line'] = $exception->getLine();
                $array['stack-trace'] = explode("\n", $exception->getTraceAsString());
                if ($exception instanceof \yii\db\Exception) {
                    $array['error-info'] = $exception->errorInfo;
                }
            }
        }
        if (($prev = $exception->getPrevious()) !== null) {
            $array['previous'] = $this->convertExceptionToArray($prev);
        }

        return $array;
    }

    /**
     * Converts special characters to HTML entities.
     * @param string $text to encode.
     * @return string encoded original text.
     */
    public function htmlEncode($text)
    {
        return htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
    }

    /**
     * Adds informational links to the given PHP type/class.
     * @param string $code type/class name to be linkified.
     * @return string linkified with HTML type/class name.
     */
    public function addTypeLinks($code)
    {
        if (preg_match('/(.*?)::([^(]+)/', $code, $matches)) {
            $class = $matches[1];
            $method = $matches[2];
            $text = $this->htmlEncode($class) . '::' . $this->htmlEncode($method);
        } else {
            $class = $code;
            $method = null;
            $text = $this->htmlEncode($class);
        }

        $url = null;

        $shouldGenerateLink = true;
        if ($method !== null && substr_compare($method, '{closure}', -9) !== 0) {
            $reflection = new \ReflectionClass($class);
            if ($reflection->hasMethod($method)) {
                $reflectionMethod = $reflection->getMethod($method);
                $shouldGenerateLink = $reflectionMethod->isPublic() || $reflectionMethod->isProtected();
            } else {
                $shouldGenerateLink = false;
            }
        }

        if ($shouldGenerateLink) {
            $url = $this->getTypeUrl($class, $method);
        }

        if ($url === null) {
            return $text;
        }

        return '<a href="' . $url . '" target="_blank">' . $text . '</a>';
    }

    /**
     * Returns the informational link URL for a given PHP type/class.
     * @param string $class the type or class name.
     * @param string|null $method the method name.
     * @return string|null the informational link URL.
     * @see addTypeLinks()
     */
    protected function getTypeUrl($class, $method)
    {
        if (strncmp($class, 'yii\\', 4) !== 0) {
            return null;
        }

        $page = $this->htmlEncode(strtolower(str_replace('\\', '-', $class)));
        $url = "http://www.yiiframework.com/doc-2.0/$page.html";
        if ($method) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            $url .= "#$method()-detail";
        }

        return $url;
    }

    /**
     * Renders a view file as a PHP script.
     * @param string $_file_ the view file.
     * @param array $_params_ the parameters (name-value pairs) that will be extracted and made available in the view file.
     * @return string the rendering result
     */
    public function renderFile($_file_, $_params_)
    {
        $_params_['handler'] = $this;
        if ($this->exception instanceof ErrorException || !Yii::$app->has('view')) {
            ob_start();
            ob_implicit_flush(false);
            extract($_params_, EXTR_OVERWRITE);
            require Yii::getAlias($_file_);

            return ob_get_clean();
        }

        $view = Yii::$app->getView();
        $view->clear();

        return $view->renderFile($_file_, $_params_, $this);
    }

    /**
     * Renders the previous exception stack for a given Exception.
     * @param \Exception $exception the exception whose precursors should be rendered.
     * @return string HTML content of the rendered previous exceptions.
     * Empty string if there are none.
     */
    public function renderPreviousExceptions($exception)
    {
        if (($previous = $exception->getPrevious()) !== null) {
            return $this->renderFile($this->previousExceptionView, ['exception' => $previous]);
        }

        return '';
    }

    /**
     * Renders a single call stack element.
     * @param string|null $file name where call has happened.
     * @param int|null $line number on which call has happened.
     * @param string|null $class called class name.
     * @param string|null $method called function/method name.
     * @param array $args array of method arguments.
     * @param int $index number of the call stack element.
     * @return string HTML content of the rendered call stack element.
     */
    public function renderCallStackItem($file, $line, $class, $method, $args, $index)
    {
        $lines = [];
        $begin = $end = 0;
        if ($file !== null && $line !== null) {
            $line--; // adjust line number from one-based to zero-based
            $lines = @file($file);
            if ($line < 0 || $lines === false || ($lineCount = count($lines)) < $line) {
                return '';
            }

            $half = (int) (($index === 1 ? $this->maxSourceLines : $this->maxTraceSourceLines) / 2);
            $begin = $line - $half > 0 ? $line - $half : 0;
            $end = $line + $half < $lineCount ? $line + $half : $lineCount - 1;
        }

        return $this->renderFile($this->callStackItemView, [
            'file' => $file,
            'line' => $line,
            'class' => $class,
            'method' => $method,
            'index' => $index,
            'lines' => $lines,
            'begin' => $begin,
            'end' => $end,
            'args' => $args,
        ]);
    }

    /**
     * Renders call stack.
     * @param \Exception|\ParseError $exception exception to get call stack from
     * @return string HTML content of the rendered call stack.
     * @since 2.0.12
     */
    public function renderCallStack($exception)
    {
        $out = '<ul>';
        $out .= $this->renderCallStackItem($exception->getFile(), $exception->getLine(), null, null, [], 1);
        for ($i = 0, $trace = $exception->getTrace(), $length = count($trace); $i < $length; ++$i) {
            $file = !empty($trace[$i]['file']) ? $trace[$i]['file'] : null;
            $line = !empty($trace[$i]['line']) ? $trace[$i]['line'] : null;
            $class = !empty($trace[$i]['class']) ? $trace[$i]['class'] : null;
            $function = null;
            if (!empty($trace[$i]['function']) && $trace[$i]['function'] !== 'unknown') {
                $function = $trace[$i]['function'];
            }
            $args = !empty($trace[$i]['args']) ? $trace[$i]['args'] : [];
            $out .= $this->renderCallStackItem($file, $line, $class, $function, $args, $i + 2);
        }
        $out .= '</ul>';
        return $out;
    }

    /**
     * Renders the global variables of the request.
     * List of global variables is defined in [[displayVars]].
     * @return string the rendering result
     * @see displayVars
     */
    public function renderRequest()
    {
        $request = '';
        foreach ($this->displayVars as $name) {
            if (!empty($GLOBALS[$name])) {
                $request .= '$' . $name . ' = ' . VarDumper::export($GLOBALS[$name]) . ";\n\n";
            }
        }

        return '<pre>' . $this->htmlEncode(rtrim($request, "\n")) . '</pre>';
    }

    /**
     * Determines whether given name of the file belongs to the framework.
     * @param string $file name to be checked.
     * @return bool whether given name of the file belongs to the framework.
     */
    public function isCoreFile($file)
    {
        return $file === null || strpos(realpath($file), YII2_PATH . DIRECTORY_SEPARATOR) === 0;
    }

    /**
     * Creates HTML containing link to the page with the information on given HTTP status code.
     * @param int $statusCode to be used to generate information link.
     * @param string $statusDescription Description to display after the the status code.
     * @return string generated HTML with HTTP status code information.
     */
    public function createHttpStatusLink($statusCode, $statusDescription)
    {
        return '<a href="http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#' . (int) $statusCode . '" target="_blank">HTTP ' . (int) $statusCode . ' &ndash; ' . $statusDescription . '</a>';
    }

    /**
     * Creates string containing HTML link which refers to the home page of determined web-server software
     * and its full name.
     * @return string server software information hyperlink.
     */
    public function createServerInformationLink()
    {
        $serverUrls = [
            'http://httpd.apache.org/' => ['apache'],
            'http://nginx.org/' => ['nginx'],
            'http://lighttpd.net/' => ['lighttpd'],
            'http://gwan.com/' => ['g-wan', 'gwan'],
            'http://iis.net/' => ['iis', 'services'],
            'http://php.net/manual/en/features.commandline.webserver.php' => ['development'],
        ];
        if (isset($_SERVER['SERVER_SOFTWARE'])) {
            foreach ($serverUrls as $url => $keywords) {
                foreach ($keywords as $keyword) {
                    if (stripos($_SERVER['SERVER_SOFTWARE'], $keyword) !== false) {
                        return '<a href="' . $url . '" target="_blank">' . $this->htmlEncode($_SERVER['SERVER_SOFTWARE']) . '</a>';
                    }
                }
            }
        }

        return '';
    }

    /**
     * Creates string containing HTML link which refers to the page with the current version
     * of the framework and version number text.
     * @return string framework version information hyperlink.
     */
    public function createFrameworkVersionLink()
    {
        return '<a href="http://github.com/yiisoft/yii2/" target="_blank">' . $this->htmlEncode(Yii::getVersion()) . '</a>';
    }

    /**
     * Converts arguments array to its string representation.
     *
     * @param array $args arguments array to be converted
     * @return string string representation of the arguments array
     */
    public function argumentsToString($args)
    {
        $count = 0;
        $isAssoc = $args !== array_values($args);

        foreach ($args as $key => $value) {
            $count++;
            if ($count >= 5) {
                if ($count > 5) {
                    unset($args[$key]);
                } else {
                    $args[$key] = '...';
                }
                continue;
            }

            if (is_object($value)) {
                $args[$key] = '<span class="title">' . $this->htmlEncode(get_class($value)) . '</span>';
            } elseif (is_bool($value)) {
                $args[$key] = '<span class="keyword">' . ($value ? 'true' : 'false') . '</span>';
            } elseif (is_string($value)) {
                $fullValue = $this->htmlEncode($value);
                if (mb_strlen($value, 'UTF-8') > 32) {
                    $displayValue = $this->htmlEncode(mb_substr($value, 0, 32, 'UTF-8')) . '...';
                    $args[$key] = "<span class=\"string\" title=\"$fullValue\">'$displayValue'</span>";
                } else {
                    $args[$key] = "<span class=\"string\">'$fullValue'</span>";
                }
            } elseif (is_array($value)) {
                $args[$key] = '[' . $this->argumentsToString($value) . ']';
            } elseif ($value === null) {
                $args[$key] = '<span class="keyword">null</span>';
            } elseif (is_resource($value)) {
                $args[$key] = '<span class="keyword">resource</span>';
            } else {
                $args[$key] = '<span class="number">' . $value . '</span>';
            }

            if (is_string($key)) {
                $args[$key] = '<span class="string">\'' . $this->htmlEncode($key) . "'</span> => $args[$key]";
            } elseif ($isAssoc) {
                $args[$key] = "<span class=\"number\">$key</span> => $args[$key]";
            }
        }

        return implode(', ', $args);
    }

    /**
     * Returns human-readable exception name.
     * @param \Exception $exception
     * @return string human-readable exception name or null if it cannot be determined
     */
    public function getExceptionName($exception)
    {
        if ($exception instanceof \yii\base\Exception || $exception instanceof \yii\base\InvalidCallException || $exception instanceof \yii\base\InvalidParamException || $exception instanceof \yii\base\UnknownMethodException) {
            return $exception->getName();
        }

        return null;
    }

    /**
     * @return bool if simple HTML should be rendered
     * @since 2.0.12
     */
    protected function shouldRenderSimpleHtml()
    {
        return YII_ENV_TEST || Yii::$app->request->getIsAjax();
    }
}


1		<?php
2		/**
3		* @link http://www.yiiframework.com/
4		* @copyright Copyright (c) 2008 Yii Software LLC
5		* @license http://www.yiiframework.com/license/
6		*/
7
8		namespace yii\web;
9
10		use Yii;
11		use yii\base\ErrorException;
12		use yii\base\Exception;
13		use yii\base\UserException;
14		use yii\helpers\VarDumper;
15
16		/**
17		* ErrorHandler handles uncaught PHP errors and exceptions.
18		*
19		* ErrorHandler displays these errors using appropriate views based on the
20		* nature of the errors and the mode the application runs at.
21		*
22		* ErrorHandler is configured as an application component in [[\yii\base\Application]] by default.
23		* You can access that instance via `Yii::$app->errorHandler`.
24		*
25		* For more details and usage information on ErrorHandler, see the [guide article on handling errors](guide:runtime-handling-errors).
26		*
27		* @author Qiang Xue <[email protected]>
28		* @author Timur Ruziev <[email protected]>
29		* @since 2.0
30		*/
31		class ErrorHandler extends \yii\base\ErrorHandler
32		{
33		/**
34		* @var int maximum number of source code lines to be displayed. Defaults to 19.
35		*/
36		public $maxSourceLines = 19;
37		/**
38		* @var int maximum number of trace source code lines to be displayed. Defaults to 13.
39		*/
40		public $maxTraceSourceLines = 13;
41		/**
42		* @var string the route (e.g. `site/error`) to the controller action that will be used
43		* to display external errors. Inside the action, it can retrieve the error information
44		* using `Yii::$app->errorHandler->exception`. This property defaults to null, meaning ErrorHandler
45		* will handle the error display.
46		*/
47		public $errorAction;
48		/**
49		* @var string the path of the view file for rendering exceptions without call stack information.
50		*/
51		public $errorView = '@yii/views/errorHandler/error.php';
52		/**
53		* @var string the path of the view file for rendering exceptions.
54		*/
55		public $exceptionView = '@yii/views/errorHandler/exception.php';
56		/**
57		* @var string the path of the view file for rendering exceptions and errors call stack element.
58		*/
59		public $callStackItemView = '@yii/views/errorHandler/callStackItem.php';
60		/**
61		* @var string the path of the view file for rendering previous exceptions.
62		*/
63		public $previousExceptionView = '@yii/views/errorHandler/previousException.php';
64		/**
65		* @var array list of the PHP predefined variables that should be displayed on the error page.
66		* Note that a variable must be accessible via `$GLOBALS`. Otherwise it won't be displayed.
67		* Defaults to `['_GET', '_POST', '_FILES', '_COOKIE', '_SESSION']`.
68		* @see renderRequest()
69		* @since 2.0.7
70		*/
71		public $displayVars = ['_GET', '_POST', '_FILES', '_COOKIE', '_SESSION'];
72		/**
73		* @var string trace line with placeholders to be be substituted.
74		* The placeholders are {file}, {line} and {text} and the string should be as follows.
75		*
76		* `File: {file} - Line: {line} - Text: {text}`
77		*
78		* @example <a href="ide://open?file={file}&line={line}">{html}</a>
79		* @see https://github.com/yiisoft/yii2-debug#open-files-in-ide
80		* @since 2.0.14
81		*/
82		public $traceLine = '{html}';
83
84
85		/**
86		* Renders the exception.
87		* @param \Exception\|\Error $exception the exception to be rendered.
88		*/
89	2	protected function renderException($exception)
90		{
91	2	if (Yii::$app->has('response')) {
92	2	$response = Yii::$app->getResponse();
93		// reset parameters of response to avoid interference with partially created response data
94		// in case the error occurred while sending the response.
95	2	$response->isSent = false;
96	2	$response->stream = null;
97	2	$response->data = null;
98	2	$response->content = null;
99		} else {
100		$response = new Response();
101		}
102
103	2	$response->setStatusCodeByException($exception);
104
105	2	$useErrorView = $response->format === Response::FORMAT_HTML && (!YII_DEBUG \|\| $exception instanceof UserException);
106
107	2	if ($useErrorView && $this->errorAction !== null) {
108		$result = Yii::$app->runAction($this->errorAction);
109		if ($result instanceof Response) {
110		$response = $result;
111		} else {
112		$response->data = $result;
113		}
114	2	} elseif ($response->format === Response::FORMAT_HTML) {
115	2	if ($this->shouldRenderSimpleHtml()) {
116		// AJAX request
117		$response->data = '<pre>' . $this->htmlEncode(static::convertExceptionToString($exception)) . '</pre>';
118		} else {
119		// if there is an error during error rendering it's useful to
120		// display PHP error in debug mode instead of a blank screen
121	2	if (YII_DEBUG) {
122	2	ini_set('display_errors', 1);
123		}
124	2	$file = $useErrorView ? $this->errorView : $this->exceptionView;
125	2	$response->data = $this->renderFile($file, [
126	2	'exception' => $exception,
127		]);
128		}
129		} elseif ($response->format === Response::FORMAT_RAW) {
130		$response->data = static::convertExceptionToString($exception);
131		} else {
132		$response->data = $this->convertExceptionToArray($exception);
133		}
134
135	2	$response->send();
136	2	}
137
138		/**
139		* Converts an exception into an array.
140		* @param \Exception\|\Error $exception the exception being converted
141		* @return array the array representation of the exception.
142		*/
143		protected function convertExceptionToArray($exception)
144		{
145		if (!YII_DEBUG && !$exception instanceof UserException && !$exception instanceof HttpException) {
146		$exception = new HttpException(500, Yii::t('yii', 'An internal server error occurred.'));
147		}
148
149		$array = [
150		'name' => ($exception instanceof Exception \|\| $exception instanceof ErrorException) ? $exception->getName() : 'Exception',
151		'message' => $exception->getMessage(),
152		'code' => $exception->getCode(),
153		];
154		if ($exception instanceof HttpException) {
155		$array['status'] = $exception->statusCode;
156		}
157		if (YII_DEBUG) {
158		$array['type'] = get_class($exception);
159		if (!$exception instanceof UserException) {
160		$array['file'] = $exception->getFile();
161		$array['line'] = $exception->getLine();
162		$array['stack-trace'] = explode("\n", $exception->getTraceAsString());
163		if ($exception instanceof \yii\db\Exception) {
164		$array['error-info'] = $exception->errorInfo;
165		}
166		}
167		}
168		if (($prev = $exception->getPrevious()) !== null) {
169		$array['previous'] = $this->convertExceptionToArray($prev);
170		}
171
172		return $array;
173		}
174
175		/**
176		* Converts special characters to HTML entities.
177		* @param string $text to encode.
178		* @return string encoded original text.
179		*/
180	4	public function htmlEncode($text)
181		{
182	4	return htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
183		}
184
185		/**
186		* Adds informational links to the given PHP type/class.
187		* @param string $code type/class name to be linkified.
188		* @return string linkified with HTML type/class name.
189		*/
190		public function addTypeLinks($code)
191		{
192		if (preg_match('/(.*?)::([^(]+)/', $code, $matches)) {
193		$class = $matches[1];
194		$method = $matches[2];
195		$text = $this->htmlEncode($class) . '::' . $this->htmlEncode($method);
196		} else {
197		$class = $code;
198		$method = null;
199		$text = $this->htmlEncode($class);
200		}
201
202		$url = null;
203
204		$shouldGenerateLink = true;
205		if ($method !== null && substr_compare($method, '{closure}', -9) !== 0) {
206		$reflection = new \ReflectionClass($class);
207		if ($reflection->hasMethod($method)) {
208		$reflectionMethod = $reflection->getMethod($method);
209		$shouldGenerateLink = $reflectionMethod->isPublic() \|\| $reflectionMethod->isProtected();
210		} else {
211		$shouldGenerateLink = false;
212		}
213		}
214
215		if ($shouldGenerateLink) {
216		$url = $this->getTypeUrl($class, $method);
217		}
218
219		if ($url === null) {
220		return $text;
221		}
222
223		return '<a href="' . $url . '" target="_blank">' . $text . '</a>';
224		}
225
226		/**
227		* Returns the informational link URL for a given PHP type/class.
228		* @param string $class the type or class name.
229		* @param string\|null $method the method name.
230		* @return string\|null the informational link URL.
231		* @see addTypeLinks()
232		*/
233		protected function getTypeUrl($class, $method)
234		{
235		if (strncmp($class, 'yii\\', 4) !== 0) {
236		return null;
237		}
238
239		$page = $this->htmlEncode(strtolower(str_replace('\\', '-', $class)));
240		$url = "http://www.yiiframework.com/doc-2.0/$page.html";
241		if ($method) {
		0 ignored issues – show Bug Best Practice introduced 2016-09-02 20:20 UTC by Report Bug Copy Issue Report The expression `$method` of type `string\|null` is loosely compared to `true`; this is ambiguous if the string can be empty. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
242		$url .= "#$method()-detail";
243		}
244
245		return $url;
246		}
247
248		/**
249		* Renders a view file as a PHP script.
250		* @param string $_file_ the view file.
251		* @param array $_params_ the parameters (name-value pairs) that will be extracted and made available in the view file.
252		* @return string the rendering result
253		*/
254	6	public function renderFile($_file_, $_params_)
255		{
256	6	$_params_['handler'] = $this;
257	6	if ($this->exception instanceof ErrorException \|\| !Yii::$app->has('view')) {
258		ob_start();
259		ob_implicit_flush(false);
260		extract($_params_, EXTR_OVERWRITE);
261		require Yii::getAlias($_file_);
262
263		return ob_get_clean();
264		}
265
266	6	$view = Yii::$app->getView();
267	6	$view->clear();
268
269	6	return $view->renderFile($_file_, $_params_, $this);
270		}
271
272		/**
273		* Renders the previous exception stack for a given Exception.
274		* @param \Exception $exception the exception whose precursors should be rendered.
275		* @return string HTML content of the rendered previous exceptions.
276		* Empty string if there are none.
277		*/
278		public function renderPreviousExceptions($exception)
279		{
280		if (($previous = $exception->getPrevious()) !== null) {
281		return $this->renderFile($this->previousExceptionView, ['exception' => $previous]);
282		}
283
284		return '';
285		}
286
287		/**
288		* Renders a single call stack element.
289		* @param string\|null $file name where call has happened.
290		* @param int\|null $line number on which call has happened.
291		* @param string\|null $class called class name.
292		* @param string\|null $method called function/method name.
293		* @param array $args array of method arguments.
294		* @param int $index number of the call stack element.
295		* @return string HTML content of the rendered call stack element.
296		*/
297	1	public function renderCallStackItem($file, $line, $class, $method, $args, $index)
298		{
299	1	$lines = [];
300	1	$begin = $end = 0;
301	1	if ($file !== null && $line !== null) {
302	1	$line--; // adjust line number from one-based to zero-based
303	1	$lines = @file($file);
304	1	if ($line < 0 \|\| $lines === false \|\| ($lineCount = count($lines)) < $line) {
305		return '';
306		}
307
308	1	$half = (int) (($index === 1 ? $this->maxSourceLines : $this->maxTraceSourceLines) / 2);
309	1	$begin = $line - $half > 0 ? $line - $half : 0;
310	1	$end = $line + $half < $lineCount ? $line + $half : $lineCount - 1;
311		}
312
313	1	return $this->renderFile($this->callStackItemView, [
314	1	'file' => $file,
315	1	'line' => $line,
316	1	'class' => $class,
317	1	'method' => $method,
318	1	'index' => $index,
319	1	'lines' => $lines,
320	1	'begin' => $begin,
321	1	'end' => $end,
322	1	'args' => $args,
323		]);
324		}
325
326		/**
327		* Renders call stack.
328		* @param \Exception\|\ParseError $exception exception to get call stack from
329		* @return string HTML content of the rendered call stack.
330		* @since 2.0.12
331		*/
332		public function renderCallStack($exception)
333		{
334		$out = '<ul>';
335		$out .= $this->renderCallStackItem($exception->getFile(), $exception->getLine(), null, null, [], 1);
336		for ($i = 0, $trace = $exception->getTrace(), $length = count($trace); $i < $length; ++$i) {
337		$file = !empty($trace[$i]['file']) ? $trace[$i]['file'] : null;
338		$line = !empty($trace[$i]['line']) ? $trace[$i]['line'] : null;
339		$class = !empty($trace[$i]['class']) ? $trace[$i]['class'] : null;
340		$function = null;
341		if (!empty($trace[$i]['function']) && $trace[$i]['function'] !== 'unknown') {
342		$function = $trace[$i]['function'];
343		}
344		$args = !empty($trace[$i]['args']) ? $trace[$i]['args'] : [];
345		$out .= $this->renderCallStackItem($file, $line, $class, $function, $args, $i + 2);
346		}
347		$out .= '</ul>';
348		return $out;
349		}
350
351		/**
352		* Renders the global variables of the request.
353		* List of global variables is defined in [[displayVars]].
354		* @return string the rendering result
355		* @see displayVars
356		*/
357		public function renderRequest()
358		{
359		$request = '';
360		foreach ($this->displayVars as $name) {
361		if (!empty($GLOBALS[$name])) {
362		$request .= '$' . $name . ' = ' . VarDumper::export($GLOBALS[$name]) . ";\n\n";
363		}
364		}
365
366		return '<pre>' . $this->htmlEncode(rtrim($request, "\n")) . '</pre>';
367		}
368
369		/**
370		* Determines whether given name of the file belongs to the framework.
371		* @param string $file name to be checked.
372		* @return bool whether given name of the file belongs to the framework.
373		*/
374	1	public function isCoreFile($file)
375		{
376	1	return $file === null \|\| strpos(realpath($file), YII2_PATH . DIRECTORY_SEPARATOR) === 0;
377		}
378
379		/**
380		* Creates HTML containing link to the page with the information on given HTTP status code.
381		* @param int $statusCode to be used to generate information link.
382		* @param string $statusDescription Description to display after the the status code.
383		* @return string generated HTML with HTTP status code information.
384		*/
385		public function createHttpStatusLink($statusCode, $statusDescription)
386		{
387		return '<a href="http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#' . (int) $statusCode . '" target="_blank">HTTP ' . (int) $statusCode . ' – ' . $statusDescription . '</a>';
388		}
389
390		/**
391		* Creates string containing HTML link which refers to the home page of determined web-server software
392		* and its full name.
393		* @return string server software information hyperlink.
394		*/
395		public function createServerInformationLink()
396		{
397		$serverUrls = [
398		'http://httpd.apache.org/' => ['apache'],
399		'http://nginx.org/' => ['nginx'],
400		'http://lighttpd.net/' => ['lighttpd'],
401		'http://gwan.com/' => ['g-wan', 'gwan'],
402		'http://iis.net/' => ['iis', 'services'],
403		'http://php.net/manual/en/features.commandline.webserver.php' => ['development'],
404		];
405		if (isset($_SERVER['SERVER_SOFTWARE'])) {
406		foreach ($serverUrls as $url => $keywords) {
407		foreach ($keywords as $keyword) {
408		if (stripos($_SERVER['SERVER_SOFTWARE'], $keyword) !== false) {
409		return '<a href="' . $url . '" target="_blank">' . $this->htmlEncode($_SERVER['SERVER_SOFTWARE']) . '</a>';
410		}
411		}
412		}
413		}
414
415		return '';
416		}
417
418		/**
419		* Creates string containing HTML link which refers to the page with the current version
420		* of the framework and version number text.
421		* @return string framework version information hyperlink.
422		*/
423		public function createFrameworkVersionLink()
424		{
425		return '<a href="http://github.com/yiisoft/yii2/" target="_blank">' . $this->htmlEncode(Yii::getVersion()) . '</a>';
426		}
427
428		/**
429		* Converts arguments array to its string representation.
430		*
431		* @param array $args arguments array to be converted
432		* @return string string representation of the arguments array
433		*/
434		public function argumentsToString($args)
435		{
436		$count = 0;
437		$isAssoc = $args !== array_values($args);
438
439		foreach ($args as $key => $value) {
440		$count++;
441		if ($count >= 5) {
442		if ($count > 5) {
443		unset($args[$key]);
444		} else {
445		$args[$key] = '...';
446		}
447		continue;
448		}
449
450		if (is_object($value)) {
451		$args[$key] = '<span class="title">' . $this->htmlEncode(get_class($value)) . '</span>';
452		} elseif (is_bool($value)) {
453		$args[$key] = '<span class="keyword">' . ($value ? 'true' : 'false') . '</span>';
454		} elseif (is_string($value)) {
455		$fullValue = $this->htmlEncode($value);
456		if (mb_strlen($value, 'UTF-8') > 32) {
457		$displayValue = $this->htmlEncode(mb_substr($value, 0, 32, 'UTF-8')) . '...';
458		$args[$key] = "<span class=\"string\" title=\"$fullValue\">'$displayValue'</span>";
459		} else {
460		$args[$key] = "<span class=\"string\">'$fullValue'</span>";
461		}
462		} elseif (is_array($value)) {
463		$args[$key] = '[' . $this->argumentsToString($value) . ']';
464		} elseif ($value === null) {
465		$args[$key] = '<span class="keyword">null</span>';
466		} elseif (is_resource($value)) {
467		$args[$key] = '<span class="keyword">resource</span>';
468		} else {
469		$args[$key] = '<span class="number">' . $value . '</span>';
470		}
471
472		if (is_string($key)) {
473		$args[$key] = '<span class="string">\'' . $this->htmlEncode($key) . "'</span> => $args[$key]";
474		} elseif ($isAssoc) {
475		$args[$key] = "<span class=\"number\">$key</span> => $args[$key]";
476		}
477		}
478
479		return implode(', ', $args);
480		}
481
482		/**
483		* Returns human-readable exception name.
484		* @param \Exception $exception
485		* @return string human-readable exception name or null if it cannot be determined
486		*/
487	3	public function getExceptionName($exception)
488		{
489	3	if ($exception instanceof \yii\base\Exception \|\| $exception instanceof \yii\base\InvalidCallException \|\| $exception instanceof \yii\base\InvalidParamException \|\| $exception instanceof \yii\base\UnknownMethodException) {
490	3	return $exception->getName();
491		}
492
493		return null;
494		}
495
496		/**
497		* @return bool if simple HTML should be rendered
498		* @since 2.0.12
499		*/
500		protected function shouldRenderSimpleHtml()
501		{
502		return YII_ENV_TEST \|\| Yii::$app->request->getIsAjax();
503		}
504		}
505

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