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<?php |
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declare(strict_types=1); |
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/* |
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Copyright (c) 2003, 2005, 2006, 2009 Danilo Segan <[email protected]>. |
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Copyright (c) 2016 Michal Čihař <[email protected]> |
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This file is part of MoTranslator. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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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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You should have received a copy of the GNU General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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*/ |
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namespace PhpMyAdmin\MoTranslator; |
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use const PHP_INT_MAX; |
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use function file_get_contents; |
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use function strlen; |
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use function substr; |
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use function unpack; |
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/** |
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* Simple wrapper around string buffer for |
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* random access and values parsing. |
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*/ |
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class StringReader |
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{ |
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/** @var string */ |
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private $string; |
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/** @var int */ |
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private $length; |
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/** |
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* @param string $filename Name of file to load |
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*/ |
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156 |
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public function __construct(string $filename) |
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{ |
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$this->string = (string) file_get_contents($filename); |
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$this->length = strlen($this->string); |
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} |
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/** |
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* Read number of bytes from given offset. |
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* |
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* @param int $pos Offset |
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* @param int $bytes Number of bytes to read |
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*/ |
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public function read(int $pos, int $bytes): string |
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{ |
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if ($pos + $bytes > $this->length) { |
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throw new ReaderException('Not enough bytes!'); |
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} |
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return substr($this->string, $pos, $bytes); |
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} |
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/** |
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* Reads a 32bit integer from the stream. |
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* |
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* @param string $unpack Unpack string |
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* @param int $pos Position |
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* |
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* @return int Integer from the stream |
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*/ |
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148 |
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public function readint(string $unpack, int $pos): int |
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{ |
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148 |
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$data = unpack($unpack, $this->read($pos, 4)); |
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148 |
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if ($data === false) { |
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return PHP_INT_MAX; |
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} |
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$result = $data[1]; |
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/* We're reading unsigned int, but PHP will happily |
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* give us negative number on 32-bit platforms. |
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* |
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* See also documentation: |
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* https://secure.php.net/manual/en/function.unpack.php#refsect1-function.unpack-notes |
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*/ |
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return $result < 0 ? PHP_INT_MAX : $result; |
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} |
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/** |
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* Reads an array of integers from the stream. |
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* |
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* @param string $unpack Unpack string |
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* @param int $pos Position |
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* @param int $count How many elements should be read |
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* |
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* @return int[] Array of Integers |
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*/ |
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136 |
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public function readintarray(string $unpack, int $pos, int $count): array |
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{ |
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$data = unpack($unpack . $count, $this->read($pos, 4 * $count)); |
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if ($data === false) { |
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return []; |
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} |
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132 |
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return $data; |
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} |
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} |
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phpmyadmin /
motranslator
