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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | */ |
| 20 | |
| 21 | namespace Wikimedia\AtEase; |
| 22 | |
| 23 | class AtEase { |
| 24 | private static $suppressCount = 0; |
| 25 | |
| 26 | /** @var false|int */ |
| 27 | private static $originalLevel = false; |
| 28 | |
| 29 | /** |
| 30 | * Reference-counted warning suppression |
| 31 | * |
| 32 | * @param bool $end Whether to restore warnings |
| 33 | */ |
| 34 | public static function suppressWarnings( $end = false ) { |
| 35 | if ( $end ) { |
| 36 | if ( self::$suppressCount ) { |
| 37 | --self::$suppressCount; |
| 38 | if ( !self::$suppressCount ) { |
| 39 | error_reporting( self::$originalLevel ); |
| 40 | } |
| 41 | } |
| 42 | } else { |
| 43 | if ( !self::$suppressCount ) { |
| 44 | self::$originalLevel = error_reporting( E_ALL & ~( |
| 45 | E_WARNING | |
| 46 | E_NOTICE | |
| 47 | E_USER_WARNING | |
| 48 | E_USER_NOTICE | |
| 49 | E_DEPRECATED | |
| 50 | E_USER_DEPRECATED | |
| 51 | E_STRICT |
| 52 | ) ); |
| 53 | } |
| 54 | ++self::$suppressCount; |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Restore error level to previous value |
| 60 | */ |
| 61 | public static function restoreWarnings() { |
| 62 | self::suppressWarnings( true ); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Call the callback given by the first parameter, suppressing any warnings. |
| 67 | * |
| 68 | * @param callable $callback Function to call |
| 69 | * @param mixed ...$args Optional arguments for the function call |
| 70 | * @return mixed |
| 71 | */ |
| 72 | public static function quietCall( callable $callback, ...$args ) { |
| 73 | self::suppressWarnings(); |
| 74 | $rv = null; |
| 75 | try { |
| 76 | $rv = $callback( ...$args ); |
| 77 | } finally { |
| 78 | self::restoreWarnings(); |
| 79 | } |
| 80 | return $rv; |
| 81 | } |
| 82 | |
| 83 | } |