gnu-social/plugins/Bookmark/Bookmark.php

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<?php
/**
* Data class to mark notices as bookmarks
*
* PHP version 5
*
* @category Data
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
* @link http://status.net/
*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2009, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('STATUSNET')) {
exit(1);
}
/**
* For storing the fact that a notice is a bookmark
*
* @category Bookmark
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
* @link http://status.net/
*
* @see DB_DataObject
*/
class Bookmark extends Memcached_DataObject
{
public $__table = 'bookmark'; // table name
public $profile_id; // int(4) primary_key not_null
public $url; // varchar(255) primary_key not_null
public $title; // varchar(255)
public $description; // text
public $uri; // varchar(255)
public $url_crc32; // int(4) not_null
public $created; // datetime
/**
* Get an instance by key
*
* This is a utility method to get a single instance with a given key value.
*
* @param string $k Key to use to lookup (usually 'user_id' for this class)
* @param mixed $v Value to lookup
*
* @return User_greeting_count object found, or null for no hits
*
*/
function staticGet($k, $v=null)
{
return Memcached_DataObject::staticGet('Bookmark', $k, $v);
}
/**
* Get an instance by compound key
*
* This is a utility method to get a single instance with a given set of
* key-value pairs. Usually used for the primary key for a compound key; thus
* the name.
*
* @param array $kv array of key-value mappings
*
* @return Bookmark object found, or null for no hits
*
*/
function pkeyGet($kv)
{
return Memcached_DataObject::pkeyGet('Bookmark', $kv);
}
/**
* return table definition for DB_DataObject
*
* DB_DataObject needs to know something about the table to manipulate
* instances. This method provides all the DB_DataObject needs to know.
*
* @return array array of column definitions
*/
function table()
{
return array('profile_id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
'url' => DB_DATAOBJECT_STR,
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'title' => DB_DATAOBJECT_STR,
'description' => DB_DATAOBJECT_STR,
'uri' => DB_DATAOBJECT_STR,
'url_crc32' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
}
/**
* return key definitions for DB_DataObject
*
* @return array list of key field names
*/
function keys()
{
return array_keys($this->keyTypes());
}
/**
* return key definitions for Memcached_DataObject
*
* @return array associative array of key definitions
*/
function keyTypes()
{
return array('profile_id' => 'K',
'url' => 'K',
'uri' => 'U');
}
/**
* Magic formula for non-autoincrementing integer primary keys
*
* @return array magic three-false array that stops auto-incrementing.
*/
function sequenceKey()
{
return array(false, false, false);
}
/**
* Get a bookmark based on a notice
*
* @param Notice $notice Notice to check for
*
* @return Bookmark found bookmark or null
*/
function getByNotice($notice)
{
return self::staticGet('uri', $notice->uri);
}
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/**
* Get the bookmark that a user made for an URL
*
* @param Profile $profile Profile to check for
* @param string $url URL to check for
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*
* @return Bookmark bookmark found or null
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*/
static function getByURL($profile, $url)
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{
return self::pkeyGet(array('profile_id' => $profile->id,
'url' => $url));
return null;
}
/**
* Get the bookmark that a user made for an URL
*
* @param Profile $profile Profile to check for
* @param integer $crc32 CRC-32 of URL to check for
*
* @return array Bookmark objects found (usually 1 or 0)
*/
static function getByCRC32($profile, $crc32)
{
$bookmarks = array();
$nb = new Bookmark();
$nb->profile_id = $profile->id;
$nb->url_crc32 = $crc32;
if ($nb->find()) {
while ($nb->fetch()) {
$bookmarks[] = clone($nb);
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}
}
return $bookmarks;
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}
/**
* Save a new notice bookmark
*
* @param Profile $profile To save the bookmark for
* @param string $title Title of the bookmark
* @param string $url URL of the bookmark
* @param mixed $rawtags array of tags or string
* @param string $description Description of the bookmark
* @param array $options Options for the Notice::saveNew()
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*
* @return Notice saved notice
*/
static function saveNew($profile, $title, $url, $rawtags, $description,
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$options=null)
{
$nb = self::getByURL($profile, $url);
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if (!empty($nb)) {
throw new ClientException(_('Bookmark already exists.'));
}
if (empty($options)) {
$options = array();
}
if (is_string($rawtags)) {
$rawtags = preg_split('/[\s,]+/', $rawtags);
}
$nb = new Bookmark();
$nb->profile_id = $profile->id;
$nb->url = $url;
$nb->title = $title;
$nb->description = $description;
$nb->url_crc32 = crc32($nb->url);
if (array_key_exists('created', $options)) {
$nb->created = $options['created'];
} else {
$nb->created = common_sql_now();
}
if (array_key_exists('uri', $options)) {
$nb->uri = $options['uri'];
} else {
$dt = new DateTime($nb->created, new DateTimeZone('UTC'));
// I posit that it's sufficiently impossible
// for the same user to generate two CRC-32-clashing
// URLs in the same second that this is a safe unique identifier.
// If you find a real counterexample, contact me at acct:evan@status.net
// and I will publicly apologize for my hubris.
$created = $dt->format('YmdHis');
$crc32 = sprintf('%08x', $nb->url_crc32);
$nb->uri = common_local_url('showbookmark',
array('user' => $profile->id,
'created' => $created,
'crc32' => $crc32));
}
$nb->insert();
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$tags = array();
$replies = array();
// filter "for:nickname" tags
foreach ($rawtags as $tag) {
if (strtolower(mb_substr($tag, 0, 4)) == 'for:') {
if (!array_key_exists('replies', $options)) { // skip if done by caller
$nickname = mb_substr($tag, 4);
$other = common_relative_profile($profile,
$nickname);
if (!empty($other)) {
$replies[] = $other->getUri();
}
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}
} else {
$tags[] = common_canonical_tag($tag);
}
}
//
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$hashtags = array();
$taglinks = array();
foreach ($tags as $tag) {
$hashtags[] = '#'.$tag;
$attrs = array('href' => Notice_tag::url($tag),
'rel' => $tag,
'class' => 'tag');
$taglinks[] = XMLStringer::estring('a', $attrs, $tag);
}
// Use user's preferences for short URLs, if possible
$user = User::staticGet('id', $profile->id);
$shortUrl = File_redirection::makeShort($url,
empty($user) ? null : $user);
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$content = sprintf(_('"%s" %s %s %s'),
$title,
$shortUrl,
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$description,
implode(' ', $hashtags));
$rendered = sprintf(_('<span class="xfolkentry">'.
'<a class="taggedlink" href="%s">%s</a> '.
'<span class="description">%s</span> '.
'<span class="meta">%s</span>'.
'</span>'),
htmlspecialchars($url),
htmlspecialchars($title),
htmlspecialchars($description),
implode(' ', $taglinks));
$options = array_merge(array('urls' => array($url),
'rendered' => $rendered,
'tags' => $tags,
'replies' => $replies),
$options);
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if (!array_key_exists('uri', $options)) {
$options['uri'] = $nb->uri;
}
$saved = Notice::saveNew($profile->id,
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$content,
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array_key_exists('source', $options) ?
$options['source'] : 'web',
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$options);
return $saved;
}
}