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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| <?php | ||
|
|
||
| namespace PhpZip\Extra\Fields; | ||
|
|
||
| use PhpZip\Exception\InvalidArgumentException; | ||
| use PhpZip\Extra\ExtraField; | ||
|
|
||
| /** | ||
| * Apk Alignment Extra Field | ||
| * | ||
| * @author Ne-Lexa [email protected] | ||
| * @license MIT | ||
| */ | ||
| class ApkAlignmentExtraField implements ExtraField | ||
| { | ||
| /** | ||
| * Minimum size (in bytes) of the extensible data block/field used | ||
| * for alignment of uncompressed entries. | ||
| */ | ||
| const ALIGNMENT_ZIP_EXTRA_MIN_SIZE_BYTES = 6; | ||
|
|
||
| const ANDROID_COMMON_PAGE_ALIGNMENT_BYTES = 4096; | ||
|
|
||
| /** | ||
| * @var int | ||
| */ | ||
| private $multiple; | ||
| /** | ||
| * @var int | ||
| */ | ||
| private $padding; | ||
|
|
||
| /** | ||
| * Returns the Header ID (type) of this Extra Field. | ||
| * The Header ID is an unsigned short integer (two bytes) | ||
| * which must be constant during the life cycle of this object. | ||
| * | ||
| * @return int | ||
| */ | ||
| public static function getHeaderId() | ||
| { | ||
| return 0xD935; | ||
| } | ||
|
|
||
| /** | ||
| * Serializes a Data Block. | ||
| * @return string | ||
| */ | ||
| public function serialize() | ||
| { | ||
| if ($this->padding > 0) { | ||
| $args = array_merge( | ||
| ['vc*', $this->multiple], | ||
| array_fill(2, $this->padding, 0) | ||
| ); | ||
| return call_user_func_array('pack', $args); | ||
| } | ||
| return pack('v', $this->multiple); | ||
| } | ||
|
|
||
| /** | ||
| * Initializes this Extra Field by deserializing a Data Block. | ||
| * @param string $data | ||
| * @throws InvalidArgumentException | ||
| */ | ||
| public function deserialize($data) | ||
| { | ||
| $length = strlen($data); | ||
| if ($length < 2) { | ||
| // This is APK alignment field. | ||
| // FORMAT: | ||
| // * uint16 alignment multiple (in bytes) | ||
| // * remaining bytes -- padding to achieve alignment of data which starts after | ||
| // the extra field | ||
| throw new InvalidArgumentException("Minimum 6 bytes of the extensible data block/field used for alignment of uncompressed entries."); | ||
| } | ||
| $this->multiple = unpack('v', $data)[1]; | ||
| $this->padding = $length - 2; | ||
| } | ||
|
|
||
| /** | ||
| * @return mixed | ||
| */ | ||
| public function getMultiple() | ||
| { | ||
| return $this->multiple; | ||
| } | ||
|
|
||
| /** | ||
| * @return int | ||
| */ | ||
| public function getPadding() | ||
| { | ||
| return $this->padding; | ||
| } | ||
|
|
||
| /** | ||
| * @param int $multiple | ||
| */ | ||
| public function setMultiple($multiple) | ||
| { | ||
| $this->multiple = $multiple; | ||
| } | ||
|
|
||
| /** | ||
| * @param int $padding | ||
| */ | ||
| public function setPadding($padding) | ||
| { | ||
| $this->padding = $padding; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| <?php | ||
|
|
||
| namespace PhpZip\Extra\Fields; | ||
|
|
||
| use PhpZip\Exception\ZipException; | ||
| use PhpZip\Extra\ExtraField; | ||
|
|
||
| /** | ||
| * Jar Marker Extra Field | ||
| * An executable Java program can be packaged in a JAR file with all the libraries it uses. | ||
| * Executable JAR files can easily be distinguished from the files packed in the JAR file | ||
| * by the extra field in the first file, which is hexadecimal in the 0xCAFE bytes series. | ||
| * | ||
| * @author Ne-Lexa [email protected] | ||
| * @license MIT | ||
| */ | ||
| class JarMarkerExtraField implements ExtraField | ||
| { | ||
| /** | ||
| * Returns the Header ID (type) of this Extra Field. | ||
| * The Header ID is an unsigned short integer (two bytes) | ||
| * which must be constant during the life cycle of this object. | ||
| * | ||
| * @return int | ||
| */ | ||
| public static function getHeaderId() | ||
| { | ||
| return 0xCAFE; | ||
| } | ||
|
|
||
| /** | ||
| * Serializes a Data Block. | ||
| * @return string | ||
| */ | ||
| public function serialize() | ||
| { | ||
| return ''; | ||
| } | ||
|
|
||
| /** | ||
| * Initializes this Extra Field by deserializing a Data Block. | ||
| * @param string $data | ||
| * @throws ZipException | ||
| */ | ||
| public function deserialize($data) | ||
| { | ||
| if (0 !== strlen($data)) { | ||
| throw new ZipException("JarMarker doesn't expect any data"); | ||
| } | ||
| } | ||
| } |
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