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<?php |
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declare(strict_types=1); |
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/** |
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* phpMyAdmin ShapeFile library |
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* <https://github.com/phpmyadmin/shapefile/>. |
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* |
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* Copyright 2006-2007 Ovidio <ovidio AT users.sourceforge.net> |
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* Copyright 2016 - 2017 Michal Čihař <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, you can download one from |
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* https://www.gnu.org/copyleft/gpl.html. |
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*/ |
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namespace PhpMyAdmin\ShapeFile; |
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use function current; |
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use function pack; |
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use function sprintf; |
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use function strrev; |
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use function unpack; |
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class Util |
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{ |
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private static bool|null $littleEndian = null; |
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private const SHAPE_NAMES = [ |
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0 => 'Null Shape', |
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1 => 'Point', |
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3 => 'PolyLine', |
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5 => 'Polygon', |
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8 => 'MultiPoint', |
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11 => 'PointZ', |
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13 => 'PolyLineZ', |
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15 => 'PolygonZ', |
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18 => 'MultiPointZ', |
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21 => 'PointM', |
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23 => 'PolyLineM', |
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25 => 'PolygonM', |
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28 => 'MultiPointM', |
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31 => 'MultiPatch', |
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]; |
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/** |
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* Reads data. |
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* |
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* @param string $type type for unpack() |
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* @param string|false $data Data to process |
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*/ |
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public static function loadData(string $type, string|false $data): mixed |
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{ |
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if ($data === false || $data === '') { |
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return false; |
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} |
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$tmp = unpack($type, $data); |
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return $tmp === false ? false : current($tmp); |
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} |
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/** |
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* Encodes double value to correct endianity. |
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*/ |
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public static function packDouble(float $value): string |
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{ |
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$bin = pack('d', $value); |
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if (self::$littleEndian === null) { |
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4 |
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self::$littleEndian = (pack('L', 1) === pack('V', 1)); |
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} |
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if (self::$littleEndian) { |
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return $bin; |
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} |
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return strrev($bin); |
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} |
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/** |
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* Returns shape name. |
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*/ |
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public static function nameShape(int $type): string |
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{ |
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return self::SHAPE_NAMES[$type] ?? sprintf('Shape %d', $type); |
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} |
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} |
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phpmyadmin /
shapefile
