| return strlen($str) == strspn($str, '0123456789');␊ |
| }␊ |
| ␊ |
| public static function photoUrl($user, $photo, $album = null) {␊ |
| // At least user and photo are required to access a photo entry␊ |
| if (! isset($user, $photo))␊ |
| return null;␊ |
| ␊ |
| $user = "user/$user";␊ |
| $photo = self::isId($photo) ? "photoid/$photo" : "photo/$photo";␊ |
| $url = 'http://picasaweb.google.com/data/entry/api';␊ |
| ␊ |
| // The album is optional␊ |
| if (isset($album)) {␊ |
| $album = self::isId($album) ? "albumid/$album" : "album/$album";␊ |
| $url = "$url/$user/$album/$photo";␊ |
| } else {␊ |
| $url = "$url/$user/$photo";␊ |
| /**␊ |
| * Build a Picasaweb URL.␊ |
| *␊ |
| * Entry point for building the canonical Picasaweb URL from its␊ |
| * components.␊ |
| *␊ |
| * @param String $user The Picasaweb user␊ |
| * @param String $album The album id (or its canonical title),␊ |
| * optional for photo URLs.␊ |
| * @param String $photo The photo id: leave it null for albums.␊ |
| * @return String The URL or null on errors.␊ |
| */␊ |
| private static function url($user, $album, $photo = null) {␊ |
| $url = null;␊ |
| ␊ |
| // The user is always required by the Picasaweb API␊ |
| if (isset($user)) {␊ |
| $domain = 'http://picasaweb.google.com';␊ |
| $user = "/user/$user";␊ |
| isset($album) and $album = self::isId($album) ? "/albumid/$album" : "/album/$album";␊ |
| isset($photo) and $photo = self::isId($photo) ? "/photoid/$photo" : "/photo/$photo";␊ |
| ␊ |
| if (isset($photo)) {␊ |
| // Photo URL␊ |
| $url = "$domain/data/entry/api$user$album$photo";␊ |
| } elseif (isset($album)) {␊ |
| // Album URL␊ |
| $url = "$domain/data/feed/api$user$album";␊ |
| }␊ |
| }␊ |
| ␊ |
| return $url;␊ |
| }␊ |
| ␊ |
| public static function albumUrl($user, $album) {␊ |
| // Both user and album are required to access an album␊ |
| if (! isset($user, $album))␊ |
| return null;␊ |
| ␊ |
| $user = "user/$user";␊ |
| $album = self::isId($album) ? "albumid/$album" : "album/$album";␊ |
| ␊ |
| return "http://picasaweb.google.com/data/feed/api/$user/$album";␊ |
| }␊ |
| ␊ |
| public static function photo($url) {␊ |
| $tree = self::xmlFetch($url);␊ |
| if (empty($tree))␊ |
|
| return null;␊ |
| } elseif (empty($photo)) {␊ |
| $viewer = new SSViewer('Picasaweb_album');␊ |
| $data = self::album(self::albumUrl($user, $album));␊ |
| $data = self::album(self::url($user, $album));␊ |
| } else {␊ |
| $viewer = new SSViewer('Picasaweb_photo');␊ |
| $data = self::photo(self::photoUrl($user, $photo, $album));␊ |
| $data = self::photo(self::url($user, $album, $photo));␊ |
| }␊ |
| ␊ |
| if (is_null($data))␊ |
