X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=application%2Fbookmark%2FLinkDB.php;h=c13a11417b5fb66af9a7df5597ad2f2a09298936;hb=HEAD;hp=41d5591fe11a5dcfaf3f0ca796e9436fccf47746;hpb=b790f900c937d0d8f6eccc15d2b4c26023f3d276;p=github%2Fshaarli%2FShaarli.git diff --git a/application/bookmark/LinkDB.php b/application/bookmark/LinkDB.php deleted file mode 100644 index 41d5591f..00000000 --- a/application/bookmark/LinkDB.php +++ /dev/null @@ -1,604 +0,0 @@ -link offset) - private $urls; - - /** - * @var array List of all links IDS mapped with their array offset. - * Map: id->offset. - */ - protected $ids; - - // List of offset keys (for the Iterator interface implementation) - private $keys; - - // Position in the $this->keys array (for the Iterator interface) - private $position; - - // Is the user logged in? (used to filter private links) - private $loggedIn; - - // Hide public links - private $hidePublicLinks; - - // link redirector set in user settings. - private $redirector; - - /** - * Set this to `true` to urlencode link behind redirector link, `false` to leave it untouched. - * - * Example: - * anonym.to needs clean URL while dereferer.org needs urlencoded URL. - * - * @var boolean $redirectorEncode parameter: true or false - */ - private $redirectorEncode; - - /** - * Creates a new LinkDB - * - * Checks if the datastore exists; else, attempts to create a dummy one. - * - * @param string $datastore datastore file path. - * @param boolean $isLoggedIn is the user logged in? - * @param boolean $hidePublicLinks if true all links are private. - * @param string $redirector link redirector set in user settings. - * @param boolean $redirectorEncode Enable urlencode on redirected urls (default: true). - */ - public function __construct( - $datastore, - $isLoggedIn, - $hidePublicLinks, - $redirector = '', - $redirectorEncode = true - ) { - - $this->datastore = $datastore; - $this->loggedIn = $isLoggedIn; - $this->hidePublicLinks = $hidePublicLinks; - $this->redirector = $redirector; - $this->redirectorEncode = $redirectorEncode === true; - $this->check(); - $this->read(); - } - - /** - * Countable - Counts elements of an object - */ - public function count() - { - return count($this->links); - } - - /** - * ArrayAccess - Assigns a value to the specified offset - */ - public function offsetSet($offset, $value) - { - // TODO: use exceptions instead of "die" - if (!$this->loggedIn) { - die(t('You are not authorized to add a link.')); - } - if (!isset($value['id']) || empty($value['url'])) { - die(t('Internal Error: A link should always have an id and URL.')); - } - if (($offset !== null && !is_int($offset)) || !is_int($value['id'])) { - die(t('You must specify an integer as a key.')); - } - if ($offset !== null && $offset !== $value['id']) { - die(t('Array offset and link ID must be equal.')); - } - - // If the link exists, we reuse the real offset, otherwise new entry - $existing = $this->getLinkOffset($offset); - if ($existing !== null) { - $offset = $existing; - } else { - $offset = count($this->links); - } - $this->links[$offset] = $value; - $this->urls[$value['url']] = $offset; - $this->ids[$value['id']] = $offset; - } - - /** - * ArrayAccess - Whether or not an offset exists - */ - public function offsetExists($offset) - { - return array_key_exists($this->getLinkOffset($offset), $this->links); - } - - /** - * ArrayAccess - Unsets an offset - */ - public function offsetUnset($offset) - { - if (!$this->loggedIn) { - // TODO: raise an exception - die('You are not authorized to delete a link.'); - } - $realOffset = $this->getLinkOffset($offset); - $url = $this->links[$realOffset]['url']; - unset($this->urls[$url]); - unset($this->ids[$realOffset]); - unset($this->links[$realOffset]); - } - - /** - * ArrayAccess - Returns the value at specified offset - */ - public function offsetGet($offset) - { - $realOffset = $this->getLinkOffset($offset); - return isset($this->links[$realOffset]) ? $this->links[$realOffset] : null; - } - - /** - * Iterator - Returns the current element - */ - public function current() - { - return $this[$this->keys[$this->position]]; - } - - /** - * Iterator - Returns the key of the current element - */ - public function key() - { - return $this->keys[$this->position]; - } - - /** - * Iterator - Moves forward to next element - */ - public function next() - { - ++$this->position; - } - - /** - * Iterator - Rewinds the Iterator to the first element - * - * Entries are sorted by date (latest first) - */ - public function rewind() - { - $this->keys = array_keys($this->ids); - $this->position = 0; - } - - /** - * Iterator - Checks if current position is valid - */ - public function valid() - { - return isset($this->keys[$this->position]); - } - - /** - * Checks if the DB directory and file exist - * - * If no DB file is found, creates a dummy DB. - */ - private function check() - { - if (file_exists($this->datastore)) { - return; - } - - // Create a dummy database for example - $this->links = array(); - $link = array( - 'id' => 1, - 'title' => t('The personal, minimalist, super-fast, database free, bookmarking service'), - 'url' => 'https://shaarli.readthedocs.io', - 'description' => t( - 'Welcome to Shaarli! This is your first public bookmark. ' - . 'To edit or delete me, you must first login. - -To learn how to use Shaarli, consult the link "Documentation" at the bottom of this page. - -You use the community supported version of the original Shaarli project, by Sebastien Sauvage.' - ), - 'private' => 0, - 'created' => new DateTime(), - 'tags' => 'opensource software', - 'sticky' => false, - ); - $link['shorturl'] = link_small_hash($link['created'], $link['id']); - $this->links[1] = $link; - - $link = array( - 'id' => 0, - 'title' => t('My secret stuff... - Pastebin.com'), - 'url' => 'http://sebsauvage.net/paste/?8434b27936c09649#bR7XsXhoTiLcqCpQbmOpBi3rq2zzQUC5hBI7ZT1O3x8=', - 'description' => t('Shhhh! I\'m a private link only YOU can see. You can delete me too.'), - 'private' => 1, - 'created' => new DateTime('1 minute ago'), - 'tags' => 'secretstuff', - 'sticky' => false, - ); - $link['shorturl'] = link_small_hash($link['created'], $link['id']); - $this->links[0] = $link; - - // Write database to disk - $this->write(); - } - - /** - * Reads database from disk to memory - */ - private function read() - { - // Public links are hidden and user not logged in => nothing to show - if ($this->hidePublicLinks && !$this->loggedIn) { - $this->links = array(); - return; - } - - $this->urls = []; - $this->ids = []; - $this->links = FileUtils::readFlatDB($this->datastore, []); - - $toremove = array(); - foreach ($this->links as $key => &$link) { - if (!$this->loggedIn && $link['private'] != 0) { - // Transition for not upgraded databases. - unset($this->links[$key]); - continue; - } - - // Sanitize data fields. - sanitizeLink($link); - - // Remove private tags if the user is not logged in. - if (!$this->loggedIn) { - $link['tags'] = preg_replace('/(^|\s+)\.[^($|\s)]+\s*/', ' ', $link['tags']); - } - - // Do not use the redirector for internal links (Shaarli note URL starting with a '?'). - if (!empty($this->redirector) && !startsWith($link['url'], '?')) { - $link['real_url'] = $this->redirector; - if ($this->redirectorEncode) { - $link['real_url'] .= urlencode(unescape($link['url'])); - } else { - $link['real_url'] .= $link['url']; - } - } else { - $link['real_url'] = $link['url']; - } - - $link['sticky'] = isset($link['sticky']) ? $link['sticky'] : false; - - // To be able to load links before running the update, and prepare the update - if (!isset($link['created'])) { - $link['id'] = $link['linkdate']; - $link['created'] = DateTime::createFromFormat(self::LINK_DATE_FORMAT, $link['linkdate']); - if (!empty($link['updated'])) { - $link['updated'] = DateTime::createFromFormat(self::LINK_DATE_FORMAT, $link['updated']); - } - $link['shorturl'] = smallHash($link['linkdate']); - } - - $this->urls[$link['url']] = $key; - $this->ids[$link['id']] = $key; - } - } - - /** - * Saves the database from memory to disk - * - * @throws IOException the datastore is not writable - */ - private function write() - { - $this->reorder(); - FileUtils::writeFlatDB($this->datastore, $this->links); - } - - /** - * Saves the database from memory to disk - * - * @param string $pageCacheDir page cache directory - */ - public function save($pageCacheDir) - { - if (!$this->loggedIn) { - // TODO: raise an Exception instead - die('You are not authorized to change the database.'); - } - - $this->write(); - - invalidateCaches($pageCacheDir); - } - - /** - * Returns the link for a given URL, or False if it does not exist. - * - * @param string $url URL to search for - * - * @return mixed the existing link if it exists, else 'false' - */ - public function getLinkFromUrl($url) - { - if (isset($this->urls[$url])) { - return $this->links[$this->urls[$url]]; - } - return false; - } - - /** - * Returns the shaare corresponding to a smallHash. - * - * @param string $request QUERY_STRING server parameter. - * - * @return array $filtered array containing permalink data. - * - * @throws LinkNotFoundException if the smallhash is malformed or doesn't match any link. - */ - public function filterHash($request) - { - $request = substr($request, 0, 6); - $linkFilter = new LinkFilter($this->links); - return $linkFilter->filter(LinkFilter::$FILTER_HASH, $request); - } - - /** - * Returns the list of articles for a given day. - * - * @param string $request day to filter. Format: YYYYMMDD. - * - * @return array list of shaare found. - */ - public function filterDay($request) - { - $linkFilter = new LinkFilter($this->links); - return $linkFilter->filter(LinkFilter::$FILTER_DAY, $request); - } - - /** - * Filter links according to search parameters. - * - * @param array $filterRequest Search request content. Supported keys: - * - searchtags: list of tags - * - searchterm: term search - * @param bool $casesensitive Optional: Perform case sensitive filter - * @param string $visibility return only all/private/public links - * @param bool $untaggedonly return only untagged links - * - * @return array filtered links, all links if no suitable filter was provided. - */ - public function filterSearch( - $filterRequest = array(), - $casesensitive = false, - $visibility = 'all', - $untaggedonly = false - ) { - - // Filter link database according to parameters. - $searchtags = isset($filterRequest['searchtags']) ? escape($filterRequest['searchtags']) : ''; - $searchterm = isset($filterRequest['searchterm']) ? escape($filterRequest['searchterm']) : ''; - - // Search tags + fullsearch - blank string parameter will return all links. - $type = LinkFilter::$FILTER_TAG | LinkFilter::$FILTER_TEXT; // == "vuotext" - $request = [$searchtags, $searchterm]; - - $linkFilter = new LinkFilter($this); - return $linkFilter->filter($type, $request, $casesensitive, $visibility, $untaggedonly); - } - - /** - * Returns the list tags appearing in the links with the given tags - * - * @param array $filteringTags tags selecting the links to consider - * @param string $visibility process only all/private/public links - * - * @return array tag => linksCount - */ - public function linksCountPerTag($filteringTags = [], $visibility = 'all') - { - $links = $this->filterSearch(['searchtags' => $filteringTags], false, $visibility); - $tags = []; - $caseMapping = []; - foreach ($links as $link) { - foreach (preg_split('/\s+/', $link['tags'], 0, PREG_SPLIT_NO_EMPTY) as $tag) { - if (empty($tag)) { - continue; - } - // The first case found will be displayed. - if (!isset($caseMapping[strtolower($tag)])) { - $caseMapping[strtolower($tag)] = $tag; - $tags[$caseMapping[strtolower($tag)]] = 0; - } - $tags[$caseMapping[strtolower($tag)]]++; - } - } - - /* - * Formerly used arsort(), which doesn't define the sort behaviour for equal values. - * Also, this function doesn't produce the same result between PHP 5.6 and 7. - * - * So we now use array_multisort() to sort tags by DESC occurrences, - * then ASC alphabetically for equal values. - * - * @see https://github.com/shaarli/Shaarli/issues/1142 - */ - $keys = array_keys($tags); - $tmpTags = array_combine($keys, $keys); - array_multisort($tags, SORT_DESC, $tmpTags, SORT_ASC, $tags); - return $tags; - } - - /** - * Rename or delete a tag across all links. - * - * @param string $from Tag to rename - * @param string $to New tag. If none is provided, the from tag will be deleted - * - * @return array|bool List of altered links or false on error - */ - public function renameTag($from, $to) - { - if (empty($from)) { - return false; - } - $delete = empty($to); - // True for case-sensitive tag search. - $linksToAlter = $this->filterSearch(['searchtags' => $from], true); - foreach ($linksToAlter as $key => &$value) { - $tags = preg_split('/\s+/', trim($value['tags'])); - if (($pos = array_search($from, $tags)) !== false) { - if ($delete) { - unset($tags[$pos]); // Remove tag. - } else { - $tags[$pos] = trim($to); - } - $value['tags'] = trim(implode(' ', array_unique($tags))); - $this[$value['id']] = $value; - } - } - - return $linksToAlter; - } - - /** - * Returns the list of days containing articles (oldest first) - * Output: An array containing days (in format YYYYMMDD). - */ - public function days() - { - $linkDays = array(); - foreach ($this->links as $link) { - $linkDays[$link['created']->format('Ymd')] = 0; - } - $linkDays = array_keys($linkDays); - sort($linkDays); - - return $linkDays; - } - - /** - * Reorder links by creation date (newest first). - * - * Also update the urls and ids mapping arrays. - * - * @param string $order ASC|DESC - */ - public function reorder($order = 'DESC') - { - $order = $order === 'ASC' ? -1 : 1; - // Reorder array by dates. - usort($this->links, function ($a, $b) use ($order) { - if (isset($a['sticky']) && isset($b['sticky']) && $a['sticky'] !== $b['sticky']) { - return $a['sticky'] ? -1 : 1; - } - return $a['created'] < $b['created'] ? 1 * $order : -1 * $order; - }); - - $this->urls = []; - $this->ids = []; - foreach ($this->links as $key => $link) { - $this->urls[$link['url']] = $key; - $this->ids[$link['id']] = $key; - } - } - - /** - * Return the next key for link creation. - * E.g. If the last ID is 597, the next will be 598. - * - * @return int next ID. - */ - public function getNextId() - { - if (!empty($this->ids)) { - return max(array_keys($this->ids)) + 1; - } - return 0; - } - - /** - * Returns a link offset in links array from its unique ID. - * - * @param int $id Persistent ID of a link. - * - * @return int Real offset in local array, or null if doesn't exist. - */ - protected function getLinkOffset($id) - { - if (isset($this->ids[$id])) { - return $this->ids[$id]; - } - return null; - } -}