X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs-website;a=blobdiff_plain;f=vendor%2Flsolesen%2Fpel%2Fsrc%2FPelEntryWindowsString.php;fp=vendor%2Flsolesen%2Fpel%2Fsrc%2FPelEntryWindowsString.php;h=2f043493c0db5be7fdd8f08f3d291bf63304b213;hp=0000000000000000000000000000000000000000;hb=0bf8d09d2542548982e81a441b1f16e75873a04f;hpb=74df008bdbb3a11eeea356744f39b802369bda3c diff --git a/vendor/lsolesen/pel/src/PelEntryWindowsString.php b/vendor/lsolesen/pel/src/PelEntryWindowsString.php new file mode 100644 index 000000000..2f043493c --- /dev/null +++ b/vendor/lsolesen/pel/src/PelEntryWindowsString.php @@ -0,0 +1,161 @@ + + * @license http://www.gnu.org/licenses/gpl.html GNU General Public + * License (GPL) + * @package PEL + */ + +/** + * Class used to manipulate strings in the format Windows XP uses. + * + * When examining the file properties of an image in Windows XP one + * can fill in title, comment, author, keyword, and subject fields. + * Filling those fields and pressing OK will result in the data being + * written into the Exif data in the image. + * + * The data is written in a non-standard format and can thus not be + * loaded directly --- this class is needed to translate it into + * normal strings. + * + * It is important that entries from this class are only created with + * the {@link PelTag::XP_TITLE}, {@link PelTag::XP_COMMENT}, {@link + * PelTag::XP_AUTHOR}, {@link PelTag::XP_KEYWORD}, and {@link + * PelTag::XP_SUBJECT} tags. If another tag is used the data will no + * longer be correctly decoded when reloaded with PEL. (The data will + * be loaded as an {@link PelEntryByte} entry, which isn't as useful.) + * + * This class is to be used as in + * + * $title = $ifd->getEntry(PelTag::XP_TITLE); + * print($title->getValue()); + * $title->setValue('My favorite cat'); + * + * or if no entry is present one can add a new one with + * + * $title = new PelEntryWindowsString(PelTag::XP_TITLE, 'A cute dog.'); + * $ifd->addEntry($title); + * + * + * @author Martin Geisler + * @package PEL + */ +class PelEntryWindowsString extends PelEntry +{ + + /** + * The string hold by this entry. + * + * This is the string that was given to the {@link __construct + * constructor} or later to {@link setValue}, without any extra NULL + * characters or any such nonsense. + * + * @var string + */ + private $str; + + /** + * Make a new PelEntry that can hold a Windows XP specific string. + * + * @param int $tag + * the tag which this entry represents. This should be + * one of {@link PelTag::XP_TITLE}, {@link PelTag::XP_COMMENT}, + * {@link PelTag::XP_AUTHOR}, {@link PelTag::XP_KEYWORD}, and {@link + * PelTag::XP_SUBJECT} tags. If another tag is used, then this + * entry will be incorrectly reloaded as a {@link PelEntryByte}. + * + * @param string $str + * the string that this entry will represent. It will + * be passed to {@link setValue} and thus has to obey its + * requirements. + */ + public function __construct($tag, $str = '') + { + $this->tag = $tag; + $this->format = PelFormat::BYTE; + $this->setValue($str); + } + + /** + * Give the entry a new value. + * + * This will overwrite the previous value. The value can be + * retrieved later with the {@link getValue} method. + * + * @param string $str + * the new value of the entry. This should be use the + * Latin-1 encoding and be given without any extra NULL characters. + */ + public function setValue($str) + { + $l = strlen($str); + + $this->components = 2 * ($l + 1); + $this->str = $str; + $this->bytes = ''; + for ($i = 0; $i < $l; $i ++) { + $this->bytes .= $str{$i} . chr(0x00); + } + + $this->bytes .= chr(0x00) . chr(0x00); + } + + /** + * Return the string of the entry. + * + * @return string the string held, without any extra NULL + * characters. The string will be the same as the one given to + * {@link setValue} or to the {@link __construct constructor}. + */ + public function getValue() + { + return $this->str; + } + + /** + * Return the string of the entry. + * + * This methods returns the same as {@link getValue}. + * + * @param boolean $brief + * not used. + * + * @return string the string held, without any extra NULL + * characters. The string will be the same as the one given to + * {@link setValue} or to the {@link __construct constructor}. + */ + public function getText($brief = false) + { + return $this->str; + } +}