Yolk::setErrorPage() - Code Metrics - gamernetwork/yolk-core - Measure and Improve Code Quality continuously with Scrutinizer

Yolk::setErrorPage() A
last analyzed 2016-05-18 08:44 UTC

↳ Parent: Yolk

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
c	3
b	0
f	0
dl	0
loc	3
rs	10
nc	1
cc	1
eloc	2
nop	1

<?php
/*
 * This file is part of Yolk - Gamer Network's PHP Framework.
 *
 * Copyright (c) 2013 Gamer Network Ltd.
 * 
 * Distributed under the MIT License, a copy of which is available in the
 * LICENSE file that was bundled with this package, or online at:
 * https://github.com/gamernetwork/yolk-core
 */

namespace yolk;

// global helper functions (e.g. d() and dd())
require __DIR__.'/bootstrap.php';

Yolk::registerHelpers([
	'yolk\\helpers\\ArrayHelper',
	'yolk\\helpers\\StringHelper',
	'yolk\\helpers\\DateTimeHelper',
	'yolk\\helpers\\Inflector',
]);

class Yolk {

	const DUMP_TEXT     = 'text';
	const DUMP_HTML     = 'html';
	const DUMP_TERMINAL = 'terminal';

	/**
	 * The debug mode flag.
	 * @var boolean
	 */
	protected static $debug;

	/**
	 * Current error handler.
	 * @var callable
	 */
	protected static $error_handler = ['\\yolk\\exceptions\\Handler', 'error'];

	/**
	 * Current exception handler.
	 * @var callable
	 */
	protected static $exception_handler = ['\\yolk\\exceptions\\Handler', 'exception'];

	/**
	 * The error page to display for production web apps.
	 * @var string
	 */
	protected static $error_page;

	/**
	 * Array of helper methods accessable as static method on this class.
	 * @var array
	 */
	protected static $helpers = [];

	/**
	 * Cannot be instantiated.
	 */
	private function __construct() {}

	/**
	 * Determines if this is a command-line environment.
	 * @return boolean
	 */
	public static function isCLI() {
		return defined('STDIN') && is_resource(STDIN) && (get_resource_type(STDIN) == 'stream');
	}

	/**
	 * Determines if debug mode is enabled.
	 * @return boolean
	 */
	public static function isDebug() {
		return static::$debug;
	}

	/**
	 * Enables or disabled debug mode.
	 * @param boolean  $debug
	 * @return void
	 */
	public static function setDebug( $debug = false ) {
		static::$debug = (bool) $debug;
	}

	/**
	 * Pretty-print a variable - if running in debug mode.
	 * @param  mixed $var
	 * @param  string $format one of the Yolk::DUMP_* constants
	 * @return void
	 */
	public static function dump( $var, $format = null ) {

		if( !static::isDebug() )
			return;

		$dumpers = [
			static::DUMP_HTML     => '\\yolk\\debug\\HTMLDumper',
			static::DUMP_TERMINAL => '\\yolk\\debug\\TerminalDumper',
			static::DUMP_TEXT     => '\\yolk\\debug\\TextDumper',
		];

		// auto-detect format if unknown or none specified
		if( !isset($dumpers[$format]) )
			$format = static::isCLI() ? static::DUMP_TERMINAL : static::DUMP_HTML;

		$dumpers[$format]::dump($var);

	}

	/**
	 * Register one or multiple static helper classes.
	 * Static methods defined within each class will become statically callable
	 * via the Yolk object.
	 * .e.g yolk\helpers\ArrayHelper::sum() -> yolk\Yolk::sum()
	 * @param  string|array $classes
	 */
	public static function registerHelpers( $classes ) {

		if( !is_array($classes) )
			$classes = [$classes];

		foreach( $classes as $class ) {

			$class   = new \ReflectionClass($class);
			$methods = $class->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_STATIC);

			foreach( $methods as $m ) {
				static::addHelperMethod($class->name, $m->name);
			}
			
		}

	}

	/**
	 * Register a single static method as a helper.
	 * @param string $class
	 * @param string $method
	 */
	public static function addHelperMethod( $class, $method ) {

		$k = strtolower($method);

		if( method_exists(__CLASS__, $method) )
			throw new \Exception(sprintf("Helper methods cannot override pre-defined Yolk methods - '%s' is reserved", $method));
		elseif( isset(static::$helpers[$k]) && static::$helpers[$k][0] != $class )
			throw new \Exception(sprintf("Helper method '%s' already defined in class '%s', duplicate in '%s'", $method, static::$helpers[$k][0], $class));

		static::$helpers[$k] = [$class, $method];

	}

	/**
	 * Executes the specified closure, wrapping it in Yolk's error and exception handling.
	 * @param \Closure  $callable
	 * @return void
	 */
	public static function run( Callable $callable ) {

		try {

			// catch fatal errors
			register_shutdown_function(['\\yolk\\exceptions\\Handler', 'checkFatal']);

			// use our error handler
			$error_handler = set_error_handler(static::$error_handler);

			$args = func_get_args();
			array_shift($args);

			$result = call_user_func_array($callable, $args);

			// restore the original error handler
			// if $error_handler is null then passing it to set_error_handler() will fail on PHP < v5.5
			// so we create an empty error handler thereby causing PHP to run it's own handler.
			set_error_handler($error_handler ?: function() { return false; });

			return $result;

		}
		catch( \Exception $e ) {
			static::exception($e);
		}

	}

	/**
	 * Specifies the function to execute in the event of an error being triggered during a call to Yolk::run().
	 * @param callable $handler
	 * @return void
	 */
	public static function setErrorHandler( callable $handler = null ) {
		static::$error_handler = $handler ?: ['\\yolk\\exceptions\\Handler', 'error'];
	}

	/**
	 * Specifies the function to execute in the event of an exception being thrown during a call to Yolk::run().
	 * @param callable $handler
	 * @return void
	 */
	public static function setExceptionHandler( callable $handler = null ) {
		static::$exception_handler = $handler ?: ['\\yolk\\exceptions\\Handler', 'exception'];
	}

	/**
	 * Call the registered exception handler.
	 * @param  \Exception $error
	 * @return void
	 */
	public static function exception( \Exception $error ) {
		return call_user_func(
			static::$exception_handler,
			$error,
			static::$error_page ?: __DIR__. '/exceptions/error.php'
		);
	}

	/**
	 * Specifies the error page to display in the event of an error/exception.
	 * 
	 * @param string  $file
	 * @return void
	 */
	public static function setErrorPage( $file ) {
		static::$error_page = (string) $file;
	}

	public static function __callStatic( $method, array $args = [] ) {

		$k = strtolower($method);

		if( !isset(static::$helpers[$k]) )
			throw new \BadMethodCallException("Unknown helper method '$method'");

		return call_user_func_array(static::$helpers[$k], $args);

	}

}

// EOF

1			<?php
2			/*
3			* This file is part of Yolk - Gamer Network's PHP Framework.
4			*
5			* Copyright (c) 2013 Gamer Network Ltd.
6			*
7			* Distributed under the MIT License, a copy of which is available in the
8			* LICENSE file that was bundled with this package, or online at:
9			* https://github.com/gamernetwork/yolk-core
10			*/
11
12			namespace yolk;
13
14			// global helper functions (e.g. d() and dd())
15			require __DIR__.'/bootstrap.php';
16
17			Yolk::registerHelpers([
18			'yolk\\helpers\\ArrayHelper',
19			'yolk\\helpers\\StringHelper',
20			'yolk\\helpers\\DateTimeHelper',
21			'yolk\\helpers\\Inflector',
22			]);
23
24			class Yolk {
25
26			const DUMP_TEXT = 'text';
27			const DUMP_HTML = 'html';
28			const DUMP_TERMINAL = 'terminal';
29
30			/**
31			* The debug mode flag.
32			* @var boolean
33			*/
34			protected static $debug;
35
36			/**
37			* Current error handler.
38			* @var callable
39			*/
40			protected static $error_handler = ['\\yolk\\exceptions\\Handler', 'error'];
41
42			/**
43			* Current exception handler.
44			* @var callable
45			*/
46			protected static $exception_handler = ['\\yolk\\exceptions\\Handler', 'exception'];
47
48			/**
49			* The error page to display for production web apps.
50			* @var string
51			*/
52			protected static $error_page;
53
54			/**
55			* Array of helper methods accessable as static method on this class.
56			* @var array
57			*/
58			protected static $helpers = [];
59
60			/**
61			* Cannot be instantiated.
62			*/
63			private function __construct() {}
64
65			/**
66			* Determines if this is a command-line environment.
67			* @return boolean
68			*/
69			public static function isCLI() {
70			return defined('STDIN') && is_resource(STDIN) && (get_resource_type(STDIN) == 'stream');
71			}
72
73			/**
74			* Determines if debug mode is enabled.
75			* @return boolean
76			*/
77			public static function isDebug() {
78			return static::$debug;
79			}
80
81			/**
82			* Enables or disabled debug mode.
83			* @param boolean $debug
84			* @return void
85			*/
86			public static function setDebug( $debug = false ) {
87			static::$debug = (bool) $debug;
88			}
89
90			/**
91			* Pretty-print a variable - if running in debug mode.
92			* @param mixed $var
93			* @param string $format one of the Yolk::DUMP_* constants
94			* @return void
95			*/
96			public static function dump( $var, $format = null ) {
97
98			if( !static::isDebug() )
99			return;
100
101			$dumpers = [
102			static::DUMP_HTML => '\\yolk\\debug\\HTMLDumper',
103			static::DUMP_TERMINAL => '\\yolk\\debug\\TerminalDumper',
104			static::DUMP_TEXT => '\\yolk\\debug\\TextDumper',
105			];
106
107			// auto-detect format if unknown or none specified
108			if( !isset($dumpers[$format]) )
109			$format = static::isCLI() ? static::DUMP_TERMINAL : static::DUMP_HTML;
110
111			$dumpers[$format]::dump($var);
112
113			}
114
115			/**
116			* Register one or multiple static helper classes.
117			* Static methods defined within each class will become statically callable
118			* via the Yolk object.
119			* .e.g yolk\helpers\ArrayHelper::sum() -> yolk\Yolk::sum()
120			* @param string\|array $classes
121			*/
122			public static function registerHelpers( $classes ) {
123
124			if( !is_array($classes) )
125			$classes = [$classes];
126
127			foreach( $classes as $class ) {
128
129			$class = new \ReflectionClass($class);
130			$methods = $class->getMethods(\ReflectionMethod::IS_PUBLIC \| \ReflectionMethod::IS_STATIC);
131
132			foreach( $methods as $m ) {
133			static::addHelperMethod($class->name, $m->name);
134			}
135
136			}
137
138			}
139
140			/**
141			* Register a single static method as a helper.
142			* @param string $class
143			* @param string $method
144			*/
145			public static function addHelperMethod( $class, $method ) {
146
147			$k = strtolower($method);
148
149			if( method_exists(__CLASS__, $method) )
150			throw new \Exception(sprintf("Helper methods cannot override pre-defined Yolk methods - '%s' is reserved", $method));
151			elseif( isset(static::$helpers[$k]) && static::$helpers[$k][0] != $class )
152			throw new \Exception(sprintf("Helper method '%s' already defined in class '%s', duplicate in '%s'", $method, static::$helpers[$k][0], $class));
153
154			static::$helpers[$k] = [$class, $method];
155
156			}
157
158			/**
159			* Executes the specified closure, wrapping it in Yolk's error and exception handling.
160			* @param \Closure $callable
161			* @return void
162			*/
163			public static function run( Callable $callable ) {
164
165			try {
166
167			// catch fatal errors
168			register_shutdown_function(['\\yolk\\exceptions\\Handler', 'checkFatal']);
169
170			// use our error handler
171			$error_handler = set_error_handler(static::$error_handler);
172
173			$args = func_get_args();
174			array_shift($args);
175
176			$result = call_user_func_array($callable, $args);
177
178			// restore the original error handler
179			// if $error_handler is null then passing it to set_error_handler() will fail on PHP < v5.5
180			// so we create an empty error handler thereby causing PHP to run it's own handler.
181			set_error_handler($error_handler ?: function() { return false; });
182
183			return $result;
184
185			}
186			catch( \Exception $e ) {
187			static::exception($e);
188			}
189
190			}
191
192			/**
193			* Specifies the function to execute in the event of an error being triggered during a call to Yolk::run().
194			* @param callable $handler
195			* @return void
196			*/
197			public static function setErrorHandler( callable $handler = null ) {
198			static::$error_handler = $handler ?: ['\\yolk\\exceptions\\Handler', 'error'];
199			}
200
201			/**
202			* Specifies the function to execute in the event of an exception being thrown during a call to Yolk::run().
203			* @param callable $handler
204			* @return void
205			*/
206			public static function setExceptionHandler( callable $handler = null ) {
207			static::$exception_handler = $handler ?: ['\\yolk\\exceptions\\Handler', 'exception'];
208			}
209
210			/**
211			* Call the registered exception handler.
212			* @param \Exception $error
213			* @return void
214			*/
215			public static function exception( \Exception $error ) {
216			return call_user_func(
217			static::$exception_handler,
218			$error,
219			static::$error_page ?: __DIR__. '/exceptions/error.php'
220			);
221			}
222
223			/**
224			* Specifies the error page to display in the event of an error/exception.
225			*
226			* @param string $file
227			* @return void
228			*/
229			public static function setErrorPage( $file ) {
230			static::$error_page = (string) $file;
231			}
232
233			public static function __callStatic( $method, array $args = [] ) {
234
235			$k = strtolower($method);
236
237			if( !isset(static::$helpers[$k]) )
238			throw new \BadMethodCallException("Unknown helper method '$method'");
239
240			return call_user_func_array(static::$helpers[$k], $args);
241
242			}
243
244			}
245
246			// EOF

gamernetwork / yolk-core

Yolk::setErrorPage() A last analyzed 2016-05-18 08:44 UTC

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Yolk::setErrorPage() A
last analyzed 2016-05-18 08:44 UTC