← All changes | jetpack_vendor/automattic/jetpack-constants/src/class-constants.php +124 -0 16.2-beta → 16.3 View file →

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	1	+<?php
	2	+/**
	3	+ * A constants manager for Jetpack.
	4	+ *
	5	+ * @package automattic/jetpack-constants
	6	+ */
	7	+
	8	+namespace Automattic\Jetpack;
	9	+
	10	+/**
	11	+ * Class Automattic\Jetpack\Constants
	12	+ *
	13	+ * Testing constants is hard. Once you define a constant, it's defined. Constants Manager is an
	14	+ * abstraction layer so that unit tests can set "constants" for tests.
	15	+ *
	16	+ * To test your code, you'll need to swap out `defined( 'CONSTANT' )` with `Automattic\Jetpack\Constants::is_defined( 'CONSTANT' )`
	17	+ * and replace `CONSTANT` with `Automattic\Jetpack\Constants::get_constant( 'CONSTANT' )`. Then in the unit test, you can set the
	18	+ * constant with `Automattic\Jetpack\Constants::set_constant( 'CONSTANT', $value )` and then clean up after each test with something like
	19	+ * this:
	20	+ *
	21	+ * function tearDown() {
	22	+ * Automattic\Jetpack\Constants::clear_constants();
	23	+ * }
	24	+ */
	25	+class Constants {
	26	+ /**
	27	+ * A container for all defined constants.
	28	+ *
	29	+ * @access public
	30	+ * @static
	31	+ *
	32	+ * @var array
	33	+ */
	34	+ public static $set_constants = array();
	35	+
	36	+ /**
	37	+ * Checks if a "constant" has been set in constants Manager
	38	+ * and has a truthy value (e.g. not null, not false, not 0, any string).
	39	+ *
	40	+ * @param string $name The name of the constant.
	41	+ *
	42	+ * @return bool
	43	+ */
	44	+ public static function is_true( $name ) {
	45	+ return self::is_defined( $name ) && self::get_constant( $name );
	46	+ }
	47	+
	48	+ /**
	49	+ * Checks if a "constant" has been set in constants Manager, and if not,
	50	+ * checks if the constant was defined with define( 'name', 'value ).
	51	+ *
	52	+ * @param string $name The name of the constant.
	53	+ *
	54	+ * @return bool
	55	+ */
	56	+ public static function is_defined( $name ) {
	57	+ return array_key_exists( $name, self::$set_constants )
	58	+ ? true
	59	+ : defined( $name );
	60	+ }
	61	+
	62	+ /**
	63	+ * Attempts to retrieve the "constant" from constants Manager, and if it hasn't been set,
	64	+ * then attempts to get the constant with the constant() function. If that also hasn't
	65	+ * been set, attempts to get a value from filters.
	66	+ *
	67	+ * @param string $name The name of the constant.
	68	+ *
	69	+ * @return mixed null if the constant does not exist or the value of the constant.
	70	+ */
	71	+ public static function get_constant( $name ) {
	72	+ if ( array_key_exists( $name, self::$set_constants ) ) {
	73	+ return self::$set_constants[ $name ];
	74	+ }
	75	+
	76	+ if ( defined( $name ) ) {
	77	+ return constant( $name );
	78	+ }
	79	+
	80	+ /**
	81	+ * Filters the value of the constant.
	82	+ *
	83	+ * @since 1.2.0
	84	+ *
	85	+ * @param null The constant value to be filtered. The default is null.
	86	+ * @param String $name The constant name.
	87	+ */
	88	+ return apply_filters( 'jetpack_constant_default_value', null, $name );
	89	+ }
	90	+
	91	+ /**
	92	+ * Sets the value of the "constant" within constants Manager.
	93	+ *
	94	+ * @param string $name The name of the constant.
	95	+ * @param int|float|string|bool|array|null $value The value of the constant.
	96	+ */
	97	+ public static function set_constant( $name, $value ) {
	98	+ self::$set_constants[ $name ] = $value;
	99	+ }
	100	+
	101	+ /**
	102	+ * Will unset a "constant" from constants Manager if the constant exists.
	103	+ *
	104	+ * @param string $name The name of the constant.
	105	+ *
	106	+ * @return bool Whether the constant was removed.
	107	+ */
	108	+ public static function clear_single_constant( $name ) {
	109	+ if ( ! array_key_exists( $name, self::$set_constants ) ) {
	110	+ return false;
	111	+ }
	112	+
	113	+ unset( self::$set_constants[ $name ] );
	114	+
	115	+ return true;
	116	+ }
	117	+
	118	+ /**
	119	+ * Resets all of the constants within constants Manager.
	120	+ */
	121	+ public static function clear_constants() {
	122	+ self::$set_constants = array();
	123	+ }
	124	+}