.htaccess
1 year ago
BZFile.php
1 year ago
File.php
1 year ago
FileInfo.php
1 day ago
GZFile.php
1 year ago
RegFile.php
1 day ago
index.html
1 year ago
web.config
1 year ago
GZFile.php
115 lines
| 1 | <?php |
| 2 | /* |
| 3 | * |
| 4 | * JetBackup @ package |
| 5 | * Created By Idan Ben-Ezra |
| 6 | * |
| 7 | * Copyrights @ JetApps |
| 8 | * https://www.jetapps.com |
| 9 | * |
| 10 | **/ |
| 11 | namespace JetBackup\Archive\File; |
| 12 | |
| 13 | use JetBackup\Exception\ArchiveException; |
| 14 | |
| 15 | class GZFile extends File { |
| 16 | |
| 17 | private $_fd; |
| 18 | |
| 19 | /** |
| 20 | * @throws ArchiveException |
| 21 | */ |
| 22 | public function __construct(string $filename, string $mode) { |
| 23 | parent::__construct($filename, $mode); |
| 24 | |
| 25 | if (!($this->_fd = @gzopen($filename, $mode))) |
| 26 | throw new ArchiveException('Could not open file: '.$filename); |
| 27 | } |
| 28 | |
| 29 | public function truncate($offset): bool { |
| 30 | throw new ArchiveException("gzip doesn't support 'truncate'"); |
| 31 | } |
| 32 | |
| 33 | public function eof(): bool { |
| 34 | return gzeof($this->_fd); |
| 35 | } |
| 36 | |
| 37 | public function read(int $length) { |
| 38 | return gzread($this->_fd, $length); |
| 39 | } |
| 40 | |
| 41 | public function write(string $data,$length=null) { |
| 42 | return gzwrite($this->_fd, $data, $length); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * @throws ArchiveException |
| 47 | */ |
| 48 | public function seek(int $offset, int $whence = SEEK_SET): int { |
| 49 | throw new ArchiveException("gzip doesn't support 'seek'"); |
| 50 | } |
| 51 | |
| 52 | public function tell(): int { |
| 53 | return gztell($this->_fd); |
| 54 | } |
| 55 | |
| 56 | public function flush() : bool { |
| 57 | return fflush($this->_fd); |
| 58 | } |
| 59 | |
| 60 | public function close(): bool { |
| 61 | if(!$this->_fd) return true; |
| 62 | $result = gzclose($this->_fd); |
| 63 | $this->_fd = null; |
| 64 | return $result; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * @throws ArchiveException |
| 69 | */ |
| 70 | public static function getGzipOriginalSize($filePath) { |
| 71 | |
| 72 | |
| 73 | // Open the file in binary read mode |
| 74 | $file = fopen($filePath, 'rb'); |
| 75 | if ($file === false) { |
| 76 | throw new ArchiveException("Unable to open file: $filePath"); |
| 77 | } |
| 78 | |
| 79 | // Seek to the end of the file to read the original size |
| 80 | fseek($file, -4, SEEK_END); |
| 81 | $sizeBytes = fread($file, 4); |
| 82 | fclose($file); |
| 83 | |
| 84 | // Convert the size from little-endian to integer |
| 85 | return unpack('V', $sizeBytes)[1]; |
| 86 | } |
| 87 | |
| 88 | |
| 89 | |
| 90 | /** |
| 91 | * @throws ArchiveException |
| 92 | */ |
| 93 | public static function isGzipFile($filePath): bool { |
| 94 | // Check if the file exists and is readable |
| 95 | if (!file_exists($filePath) || !is_readable($filePath)) { |
| 96 | throw new ArchiveException("File does not exist or is not readable: $filePath"); |
| 97 | } |
| 98 | |
| 99 | // Open the file in binary read mode |
| 100 | $file = fopen($filePath, 'rb'); |
| 101 | if ($file === false) { |
| 102 | throw new ArchiveException("Unable to open file: $filePath"); |
| 103 | } |
| 104 | |
| 105 | // Read the first three bytes of the file |
| 106 | $header = fread($file, 3); |
| 107 | fclose($file); |
| 108 | |
| 109 | // Check if the magic number and compression method match the gzip signature |
| 110 | // Gzip files start with 1F 8B 08 (hexadecimal) |
| 111 | return $header === "\x1F\x8B\x08"; |
| 112 | } |
| 113 | |
| 114 | |
| 115 | } |