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Vk2rss.php
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<?php
/**
* @Description: vk.com Wall to RSS Class
*
* Initial creators
* @author tsarbas
* @author: kadukmm <[email protected]>
**/
/**
* Refactoring and featuring:
* including & excluding conditions,
* title generation,
* description extraction from attachment,
* hashtags extractor to 'category' tags,
* author extraction
* @author woxcab
**/
require_once('utils.php');
set_error_handler('exceptions_error_handler');
function exceptions_error_handler($severity, $message, $filename, $lineno) {
if (error_reporting() == 0) {
return;
}
if (error_reporting() & $severity) {
throw new ErrorException($message, 0, $severity, $filename, $lineno);
}
}
class Vk2rss
{
const HASH_TAG_PATTERN = '#([а-яёА-ЯЁa-zA-Z0-9_]+)(?:@[a-zA-Z0-9_]+)?';
const TEXTUAL_LINK_PATTERN = '@(?:\[((?:https?://)?(?:m\.)?vk\.com/[^|]*)\|([^\]]+)\]|(\s*)\b(https?://\S+?)(?=[.,!?;:»”’"]?(?:\s|$))|(\()(https?://\S+?)(\))|(\([^(]*?)(\s*)\b(\s*https?://\S+?)([.,!?;:»”’"]?\s*\)))@u';
const TEXTUAL_LINK_REPLACE_PATTERN = '$3$5$8$9<a href=\'$1$4$6${10}\'>$2$4$6${10}</a>$7${11}';
const TEXTUAL_LINK_REMOVE_PATTERN = '$2$5$8';
const EMPTY_STRING_PATTERN = '@^(?:[\s ]*[\r\n]+[\s ]*)*$@u';
/**
* Default title value when no text in the post
*/
const EMPTY_POST_TITLE = '[Без текста]';
/**
* Prefix of feed description for user wall
*/
const USER_FEED_DESCRIPTION_PREFIX = "Стена пользователя ";
/**
* Prefix of feed description for group wall
*/
const GROUP_FEED_DESCRIPTION_PREFIX = "Стена сообщества ";
/**
* Feed title and description prefix when global searching is performed
*/
const GLOBAL_SEARCH_FEED_TITLE_PREFIX = "Результаты поиска по запросу ";
/**
* Recent news title
*/
const RECENT_NEWS_TITLE_PREFIX = "Новости для ";
/**
* Recommended news title
*/
const RECOMMENDED_NEWS_TITLE_PREFIX = "Рекомендуемое для ";
/**
* Video title
*/
const VIDEO_TITLE_PREFIX = "Видеозапись";
/**
* Audio record title
*/
const AUDIO_TITLE_PREFIX = "Аудиозапись";
/**
* Image title
*/
const IMAGE_TITLE_PREFIX = "Изображение";
/**
* Album title
*/
const ALBUM_TITLE_PREFIX = "Альбом";
/**
* Non-image file title
*/
const FILE_TITLE_PREFIX = "Файл";
/**
* Title of repost (in the prepositional case) that's written by community
*/
const COMMUNITY_REPOST_TITLE_ABL = "в сообществе";
/**
* Maximum title length in symbols
*/
const MAX_TITLE_LENGTH = 80;
/**
* Required minimum number of symbols in second or following paragraphs in order to use its for title
*/
const MIN_PARAGRAPH_LENGTH_FOR_TITLE = 30;
/**
* URL of API method that returns wall posts
*/
const API_BASE_URL = 'https://api.vk.com/method/';
/**
* @var stdClass profile of access token's owner
*/
protected $profile;
/**
* @var int identifier of user or group which wall going to be extracted
*/
protected $owner_id;
/**
* @var string short address of user or group which wall going to be extracted
*/
protected $domain;
/**
* @var string search query to lookup on all opened walls
*/
protected $global_search;
/**
* @var string type of extracting news feed: recent or recommended
*/
protected $news_type;
/**
* @var string comma separated list of recent news' sources
*/
protected $news_sources;
/**
* @var int quantity of last posts from the wall (at most 100)
*/
protected $count;
/**
* @var string case-insensitive regular expression that have to match text of post
*/
protected $include;
/**
* @var string case-insensitive regular expression that have not to match text of post
*/
protected $exclude;
/**
* @var bool whether the HTML tags to be used in the feed item description
*/
protected $disable_html;
/**
* @var bool whether <splash:comments> (comments amount) should be presented in the feed item
*/
protected $disable_comments_amount;
/**
* @var bool whether the post should be published by community/profile owner only
*/
protected $owner_only;
/**
* @var bool whether the post should be published by anyone except community/profile owner
*/
protected $non_owner_only;
/**
* @var bool whether posts (that's published by community) with signature are allowed
* when owner_only or non_owner_only/not_owner_only parameter is passed
*/
protected $allow_signed;
/**
* @var bool whether posts are skipped that's marked as ad
*/
protected $skip_ads;
/**
* @var string text or HTML formatted string that's placed between parent and child posts
*/
protected $repost_delimiter;
/**
* @var string|null Service token to get access to opened walls (there's in app settings)
* or user access token to get access to closed walls that opened for token creator
*/
protected $access_token;
/**
* @var ProxyDescriptor|null Proxy descriptor
*/
protected $proxy = null;
/**
* @var string text or HTML formatted string that's placed between post' content and the first attachment,
* and between attachments
*/
protected $attachment_delimiter;
/**
* @var string regular expression that matches delimiter
*/
protected $delimiter_regex;
/**
* @var bool whether the access token has video permission and video embedding is enabled
*/
protected $allow_embedded_video;
/**
* @var bool $donut whether include donut posts to the feed or not
*/
protected $donut;
/**
* @var ConnectionWrapper
*/
protected $connector;
/**
* Vk2rss constructor.
* @param array $config Parameters from the set: id, access_token,
* count, include, exclude, disable_html, owner_only, non_owner_only,
* disable_comments_amount, allow_signed, skip_ads, repost_delimiter,
* proxy, proxy_type, proxy_login, proxy_password
* where id and access_token are required
* @throws Exception If required parameters id or access_token do not present in the configuration
* or proxy parameters are invalid
* or news feed type is invalid
*/
public function __construct($config)
{
if ((!empty($config['id']) + !empty($config['global_search']) + !empty($config['news_type']) !== 1)
|| empty($config['access_token'])) {
throw new Exception("Access/service token with identifier of user or community ".
"OR global search query OR newsfeed type must be passed", 400);
}
if (isset($config['proxy'])) {
try {
$this->proxy = new ProxyDescriptor($config['proxy'],
isset($config['proxy_type']) ? $config['proxy_type'] : null,
isset($config['proxy_login']) ? $config['proxy_login'] : null,
isset($config['proxy_password']) ? $config['proxy_password'] : null);
} catch (Exception $exc) {
throw new Exception("Invalid proxy parameters: " . $exc->getMessage(), 400);
}
}
$this->connector = new ConnectionWrapper($this->proxy);
$this->profile = null;
$this->access_token = $config['access_token'];
$id = $config['id'];
if (empty($id)) {
$user_response = $this->getContent('users.get');
if (property_exists($user_response, 'error')) {
throw new APIError($user_response, $this->connector->getLastUrl());
}
$this->profile = $user_response->response[0];
$this->owner_id = $this->profile->id;
$this->domain = null;
} elseif (strcmp(substr($id, 0, 2), 'id') === 0 && ctype_digit(substr($id, 2))) {
$this->owner_id = (int)substr($id, 2);
$this->domain = null;
} elseif (strcmp(substr($id, 0, 4), 'club') === 0 && ctype_digit(substr($id, 4))) {
$this->owner_id = -(int)substr($id, 4);
$this->domain = null;
} elseif (strcmp(substr($id, 0, 5), 'event') === 0 && ctype_digit(substr($id, 5))) {
$this->owner_id = -(int)substr($id, 5);
$this->domain = null;
} elseif (strcmp(substr($id, 0, 6), 'public') === 0 && ctype_digit(substr($id, 6))) {
$this->owner_id = -(int)substr($id, 6);
$this->domain = null;
} elseif (is_numeric($id) && is_int(abs($id))) {
$this->owner_id = (int)$id;
$this->domain = null;
} else {
$this->owner_id = null;
$this->domain = $id;
}
$this->global_search = empty($config['global_search']) ? null : $config['global_search'];
if (empty($config['news_type'])) {
$this->news_type = null;
$this->news_sources = null;
} else {
if ($config['news_type'] !== 'recent' && $config['news_type'] !== 'recommended') {
throw new Exception('Bad news type. Allowed values: "recent" or "recommended"', 400);
}
$this->news_type = $config['news_type'];
if (!empty($config['news_sources'])) {
if ($this->news_type !== 'recent') {
throw new Exception('News sources can be used for recent news only', 400);
}
if (preg_match("/^(?:friends|groups|pages|following|(?:u|g|list|-)?\d+)(?:,(?:friends|groups|pages|following|(?:u|g|list|-)?\d+))*$/",
$config['news_sources']) !== 1) {
throw new Exception('Bad news sources: each comma separated value must be ' .
'one of "friends", "groups", "pages", "following",' .
'"<user_id>", "u<user_id>", "-<group_id>", "g<group_id>" or "list<list_id>"',
400);
}
$this->news_sources = $config['news_sources'];
} else {
$this->news_sources = null;
}
}
$this->count = empty($config['count']) ? 20 : $config['count'];
$this->include = isset($config['include']) && $config['include'] !== ''
? preg_replace("/(?<!\\\)\//u", "\\/", $config['include']) : null;
$this->exclude = isset($config['exclude']) && $config['exclude'] !== ''
? preg_replace("/(?<!\\\)\//u", "\\/", $config['exclude']) : null;
$this->disable_html = logical_value($config, 'disable_html');
$this->disable_comments_amount = logical_value($config, 'disable_comments_amount');
$this->owner_only = logical_value($config, 'owner_only');
$this->non_owner_only = logical_value($config, 'non_owner_only') || logical_value($config, 'not_owner_only');
$this->allow_signed = logical_value($config, 'allow_signed');
$this->skip_ads = logical_value($config, 'skip_ads');
$this->allow_embedded_video = logical_value($config, 'allow_embedded_video');
$this->repost_delimiter = isset($config['repost_delimiter'])
? $config['repost_delimiter']
: ($this->disable_html ? "______________________" : "<hr><hr>");
$this->attachment_delimiter = $this->disable_html ? "______________________" : "<hr>";
if (preg_match('/\{author[^}]*\}/', $this->repost_delimiter) === 1) {
$this->delimiter_regex = '/^' . preg_quote($this->attachment_delimiter, '/') . '$/u';
} else {
$this->delimiter_regex = '/^(' . preg_quote($this->repost_delimiter, '/')
. '|' . preg_quote($this->attachment_delimiter, '/') . '$)/u';
}
if (isset($config['donut'])) {
$this->donut = logical_value($config, 'donut');
}
}
/**
* Generate RSS feed as output
*
* @throws Exception
*/
public function generateRSS()
{
include('FeedWriter.php');
$outer_encoding = mb_internal_encoding();
if (!mb_internal_encoding("UTF-8")) {
throw new Exception("Cannot set encoding UTF-8 for multibyte strings", 500);
}
$feed = new FeedWriter(RSS2);
if(!empty($this->news_type) ) {
$path = ($this->news_type === 'recent') ? 'feed' : 'feed?section=recommended';
} else {
$path = $this->domain ?: ($this->owner_id > 0 ? 'id' . $this->owner_id : 'club' . abs($this->owner_id));
}
$feed->setLink('https://vk.com/' . $path);
$feed->setChannelElement('language', 'ru-ru');
$feed->setChannelElement('pubDate', date(DATE_RSS, time()));
$profiles = array();
if (!empty($this->profile)) {
$profiles[$this->profile->id] = $this->profile;
$profiles[$this->profile->screen_name] = $this->profile;
}
$groups = array();
$next_from = null;
$offset_step = empty($this->global_search) ? 100 : 200;
if (empty($this->global_search) && empty($this->news_type) && $this->donut) {
for ($offset = 0; $offset < $this->count; $offset += $offset_step) {
$wall_response = $this->getContent("wall.get", $offset, true);
if (!$this->processWallResponse($feed, $wall_response, $profiles, $groups)) {
break;
}
}
}
for ($offset = 0; $offset < $this->count; $offset += $offset_step) {
if (!empty($this->news_type)) {
$method_name = $this->news_type == 'recent' ? 'newsfeed.get' : 'newsfeed.getRecommended';
$wall_response = $this->getContent($method_name, $next_from);
} elseif (!empty($this->global_search)) {
$wall_response = $this->getContent("newsfeed.search", $next_from);
$next_from = empty($wall_response->response->next_from)
? null : $wall_response->response->next_from;
} else {
$wall_response = $this->getContent("wall.get", $offset);
}
if (!$this->processWallResponse($feed, $wall_response, $profiles, $groups)) {
break;
}
if ((!empty($this->global_search) || !empty($this->news_type))
&& is_null($next_from)) {
break;
}
}
try {
if (!empty($this->global_search)) {
$feed_title = self::GLOBAL_SEARCH_FEED_TITLE_PREFIX . '"' . $this->global_search . '"';
$feed_description = $feed_title;
} elseif (!empty($this->domain) && isset($profiles[$this->domain])
|| (!empty($this->owner_id) && $this->owner_id > 0)
) {
$profile = isset($profiles[$this->domain]) ? $profiles[$this->domain] : $profiles[$this->owner_id];
if (!empty($this->news_type)) {
$feed_title = ($this->news_type === 'recent')
? self::RECENT_NEWS_TITLE_PREFIX
: self::RECOMMENDED_NEWS_TITLE_PREFIX;
$feed_title .= $profile->first_name_gen . ' ' . $profile->last_name_gen;
$feed_description = $feed_title;
} else {
$feed_title = $profile->first_name . ' ' . $profile->last_name;
$feed_description = self::USER_FEED_DESCRIPTION_PREFIX
. $profile->first_name . ' ' . $profile->last_name;
}
} else {
$group = isset($groups[$this->domain]) ? $groups[$this->domain] : $groups[abs($this->owner_id)];
$feed_title = $group->name;
$feed_description = self::GROUP_FEED_DESCRIPTION_PREFIX . $group->name;
}
} catch (Exception $exc) {
throw new Exception("Invalid user/group identifier, its wall is empty, " .
"empty search result, or no news", 400, $exc);
}
$feed->setTitle($feed_title);
$feed->setDescription($feed_description);
$feed->generateFeed();
mb_internal_encoding($outer_encoding);
}
/**
* @param FeedWriter $feed
* @param $wall_response
* @param array $profiles
* @param array $groups
*
* @return bool Whether response contains at least one item or not
* @throws \APIError
*/
protected function processWallResponse($feed, $wall_response, &$profiles, &$groups) {
if (property_exists($wall_response, 'error')) {
throw new APIError($wall_response, $this->connector->getLastUrl());
}
if (empty($wall_response->response->items)) {
return false;
}
$videos = array();
if ($this->allow_embedded_video) {
$this->extractVideos($videos, $wall_response->response->items);
foreach (array_chunk($videos, 200) as $videos_chunk) {
$videos_str = join(",", array_map(function($v) { return empty($v->access_key)
? "{$v->owner_id}_{$v->id}"
: "{$v->owner_id}_{$v->id}_{$v->access_key}"; },
$videos_chunk));
$videos_response = $this->getContent("video.get", null, false, array("videos" => $videos_str));
if (property_exists($videos_response, 'error')) {
$error_code = $videos_response->error->error_code;
if ($error_code == 204 || $error_code == 15) {
$this->allow_embedded_video = false;
break;
} else {
throw new APIError($videos_response, $this->connector->getLastUrl());
}
} else {
foreach ($videos_response->response->items as $video_info) {
$videos["{$video_info->owner_id}_{$video_info->id}"] = $video_info;
}
}
}
}
foreach ($wall_response->response->profiles as $profile) {
if (!isset($profile->screen_name)) {
$profile->screen_name = "id{$profile->id}";
}
$profiles[$profile->screen_name] = $profile;
$profiles[$profile->id] = $profile;
}
foreach ($wall_response->response->groups as $group) {
if (!isset($group->screen_name)) {
$group->screen_name = "club{$group->id}";
}
$groups[$group->screen_name] = $group;
$groups[$group->id] = $group;
}
foreach ($wall_response->response->items as $post) {
if ($post->id == 0
|| $this->owner_only
&& ($post->owner_id != $post->from_id
|| property_exists($post, 'signer_id') && !$this->allow_signed)
|| $this->non_owner_only && $post->owner_id == $post->from_id
&& (!property_exists($post, 'signer_id') || !$this->allow_signed)
|| $this->skip_ads && $post->marked_as_ads) {
continue;
}
$new_item = $feed->createNewItem();
$new_item->setLink("https://vk.com/wall{$post->owner_id}_{$post->id}");
$new_item->addElement('guid', "https://vk.com/wall{$post->owner_id}_{$post->id}");
$new_item->setDate($post->date);
$description = array();
$this->extractDescription($description, $videos, $post, $profiles, $groups);
if (!empty($description) && preg_match($this->delimiter_regex, $description[0]) === 1) {
array_shift($description);
}
foreach ($description as &$paragraph) {
// process internal short vk links like [id123|Name]
if ($this->disable_html) {
$paragraph = preg_replace('/\[([a-zA-Z0-9_]+)\|([^\]]+)\]/u', '$2 (https://vk.com/$1)', $paragraph);
} else {
$paragraph = preg_replace('/\[([a-zA-Z0-9_]+)\|([^\]]+)\]/u', '<a href="https://vk.com/$1">$2</a>', $paragraph);
}
}
$imploded_description = implode($this->disable_html ? PHP_EOL : '<br/>', $description);
$new_item->setDescription($imploded_description);
if (isset($this->include) && preg_match('/' . $this->include . '/iu', $imploded_description) !== 1) {
continue;
}
if (isset($this->exclude) && preg_match('/' . $this->exclude . '/iu', $imploded_description) !== 0) {
continue;
}
$new_item->addElement('title', $this->getTitle($description));
$new_item->addElement("comments", "https://vk.com/wall{$post->owner_id}_{$post->id}");
if (!$this->disable_comments_amount) {
$new_item->addElement("slash:comments", $post->comments->count);
}
if (isset($post->signer_id) && isset($profiles[$post->signer_id])) { # the 2nd owing to VK API bug
$profile = $profiles[$post->signer_id];
$new_item->addElement('author', $profile->first_name . ' ' . $profile->last_name);
} else {
$base_post = isset($post->copy_history) ? end($post->copy_history) : $post;
$from_id = isset($base_post->from_id)
? $base_post->from_id
: (isset($base_post->source_id) ? $base_post->source_id : 0);
if (isset($base_post->signer_id) && isset($profiles[$base_post->signer_id])) { # the 2nd owing to VK API bug
$profile = $profiles[$base_post->signer_id];
$new_item->addElement('author', $profile->first_name . ' ' . $profile->last_name);
} elseif ($from_id > 0) {
$profile = $profiles[$from_id];
$new_item->addElement('author', $profile->first_name . ' ' . $profile->last_name);
} elseif ($from_id < 0) {
$group = $groups[abs($from_id)];
$new_item->addElement('author', $group->name);
} elseif ($base_post->owner_id > 0) {
$profile = $profiles[$base_post->owner_id];
$new_item->addElement('author', $profile->first_name . ' ' . $profile->last_name);
} elseif ($base_post->owner_id < 0) {
$group = $groups[abs($base_post->owner_id)];
$new_item->addElement('author', $group->name);
}
}
preg_match_all('/' . self::HASH_TAG_PATTERN . '/u', implode(' ', $description), $hash_tags);
foreach ($hash_tags[1] as $hash_tag) {
$new_item->addElement('category', $hash_tag);
}
$feed->addItem($new_item);
}
return true;
}
protected function extractVideos(&$videos, &$posts) {
foreach ($posts as $post) {
if (isset($post->attachments)) {
foreach ($post->attachments as $attachment) {
if ($attachment->type === 'video') {
$video = $attachment->video;
$videos["{$video->owner_id}_{$video->id}"] = $video;
}
}
}
if (isset($post->copy_history)) {
$this->extractVideos($videos, $post->copy_history);
}
}
}
protected function extractDescription(&$description, &$videos, $post, &$profiles, &$groups)
{
$par_split_regex = '@[\s ]*?[\r\n]+[\s ]*?@u'; # PHP 5.2.X: \s does not contain non-break space
if (preg_match(self::EMPTY_STRING_PATTERN, $post->text) === 0) {
$post_text = htmlspecialchars($post->text, ENT_NOQUOTES);
if (!$this->disable_html) {
$post_text = preg_replace(self::TEXTUAL_LINK_PATTERN,
self::TEXTUAL_LINK_REPLACE_PATTERN,
$post_text);
}
$description = array_merge($description, preg_split($par_split_regex, $post_text));
}
if (isset($post->attachments)) {
foreach ($post->attachments as $attachment) {
switch ($attachment->type) {
case 'photo': {
list($preview_photo_src, $huge_photo_src) = $this->getPreviewAndOriginal($attachment->photo->sizes);
$photo_text = preg_replace('|^Original: https?://\S+\s*|u',
'',
htmlspecialchars($attachment->photo->text, ENT_NOQUOTES));
if (!$this->disable_html) {
$photo_text = preg_replace(self::TEXTUAL_LINK_PATTERN,
self::TEXTUAL_LINK_REPLACE_PATTERN,
$photo_text);
}
$photo = $this->disable_html
? $huge_photo_src
: "<a href='{$huge_photo_src}'><img src='{$preview_photo_src}'/></a>";
if (preg_match(self::EMPTY_STRING_PATTERN, $photo_text) === 0) {
$description = array_merge($description,
array($this->attachment_delimiter),
preg_split($par_split_regex, $photo_text),
array($photo));
} else {
$description[] = $photo;
}
break;
}
case 'album': {
list($preview_thumb_src, $huge_thumb_src) = $this->getPreviewAndOriginal($attachment->album->thumb->sizes);
$album_title = htmlspecialchars($attachment->album->title, ENT_NOQUOTES);
$album_url = "https://vk.com/album" . $attachment->album->owner_id . "_" . $attachment->album->id;
$description[] = $this->attachment_delimiter;
if ($this->disable_html) {
$description[] = self::ALBUM_TITLE_PREFIX . " «" . $album_title . "»: " . $album_url;
} else {
$description[] = "<a href='{$album_url}'>" . self::ALBUM_TITLE_PREFIX . " «" . $album_title . "»</a>";
}
$album_description = htmlspecialchars($attachment->album->description, ENT_NOQUOTES);
if (!$this->disable_html) {
$album_description = preg_replace(self::TEXTUAL_LINK_PATTERN,
self::TEXTUAL_LINK_REPLACE_PATTERN,
$album_description);
}
if (preg_match(self::EMPTY_STRING_PATTERN, $album_description) === 0) {
$description = array_merge($description, preg_split($par_split_regex, $album_description));
}
$thumb = $this->disable_html
? $huge_thumb_src
: "<a href='{$huge_thumb_src}'><img src='{$preview_thumb_src}'/></a>";
$description[] = $thumb;
break;
}
case 'audio': {
$title = self::AUDIO_TITLE_PREFIX . " {$attachment->audio->artist} — «{$attachment->audio->title}»";
$description[] = htmlspecialchars($title, ENT_NOQUOTES);
break;
}
case 'doc': {
$url = parse_url($attachment->doc->url);
parse_str($url['query'], $params);
unset($params['api']);
unset($params['dl']);
$url['query'] = http_build_query($params);
$url = build_url($url);
$title = htmlspecialchars($attachment->doc->title, ENT_NOQUOTES);
if (!empty($attachment->doc->preview->photo)) {
list($preview_src, $huge_photo_src) = $this->getPreviewAndOriginal($attachment->doc->preview->photo->sizes);
if ($this->disable_html) {
$description[] = self::IMAGE_TITLE_PREFIX . " «{$title}»: {$huge_photo_src} ({$url})";
} else {
array_push($description,
$this->attachment_delimiter,
"<a href='{$url}'>" . self::IMAGE_TITLE_PREFIX . " «{$title}»</a>:",
"<a href='{$huge_photo_src}'><img src='{$preview_src}'/></a>");
}
} else {
if ($this->disable_html) {
$description[] = self::FILE_TITLE_PREFIX . " «{$title}»: {$url}";
} else {
$description[] = "<a href='{$url}'>" . self::FILE_TITLE_PREFIX . " «{$title}»</a>";
}
}
break;
}
case 'link': {
if ($this->disable_html) {
array_push($description,
$this->attachment_delimiter,
"{$attachment->link->title}: {$attachment->link->url}");
} else {
$link_text = preg_match(self::EMPTY_STRING_PATTERN, $attachment->link->title) === 0 ?
htmlspecialchars($attachment->link->title, ENT_NOQUOTES) : $attachment->link->url;
if (!empty($attachment->link->photo)) {
list($preview_src, $_) = $this->getPreviewAndOriginal($attachment->link->photo->sizes);
array_push($description,
$this->attachment_delimiter,
"<a href='{$attachment->link->url}'><img src='{$preview_src}'/></a>",
"<a href='{$attachment->link->url}'>{$link_text}</a>");
} else {
array_push($description,
$this->attachment_delimiter,
"<a href='{$attachment->link->url}'>{$link_text}</a>");
}
}
if (!empty($attachment->link->description)
&& preg_match(self::EMPTY_STRING_PATTERN, $attachment->link->description) === 0) {
$description[] = htmlspecialchars($attachment->link->description, ENT_NOQUOTES);
}
break;
}
case 'video': {
$restricted = true;
if (isset($attachment->video->restriction)) {
$video_text = $attachment->video->restriction->text;
} elseif (!empty($attachment->video->content_restricted)) {
$video_text = $attachment->video->content_restricted_message;
} else {
$video_text = $attachment->video->description;
$restricted = false;
}
$video_id = "{$attachment->video->owner_id}_{$attachment->video->id}";
$video_text = htmlspecialchars($video_text, ENT_NOQUOTES);
if (!$this->disable_html) {
$video_text = preg_replace(self::TEXTUAL_LINK_PATTERN,
self::TEXTUAL_LINK_REPLACE_PATTERN,
$video_text);
}
$video_description = preg_match(self::EMPTY_STRING_PATTERN, $video_text) === 1 ?
array() : preg_split($par_split_regex, $video_text);
if (empty($attachment->video->title)) {
if ($this->disable_html) {
$video_title = self::VIDEO_TITLE_PREFIX . ":";
} else {
$video_title = "<a href='https://vk.com/video{$video_id}'>"
. self::VIDEO_TITLE_PREFIX . "</a>:";
}
} elseif ($this->disable_html) {
$video_title = self::VIDEO_TITLE_PREFIX . " «{$attachment->video->title}»:";
} else {
$video_title = self::VIDEO_TITLE_PREFIX
. " «<a href='https://vk.com/video{$video_id}'>{$attachment->video->title}</a>»:";
}
$content = array($video_title);
if ($video_description) {
array_unshift($content, $this->attachment_delimiter);
}
$playable = !$restricted && !empty($videos[$video_id]) && !empty($videos[$video_id]->player);
$video_url = $playable ? $videos[$video_id]->player : "https://vk.com/video{$video_id}";
if ($this->disable_html) {
$content[] = $video_url;
} else {
if ($playable) {
$content[] = "<iframe src='{$video_url}'>{$video_url}</iframe>";
} else {
list($preview_src, $_) = $this->getPreviewAndOriginal($attachment->video->image);
$content[] = "<a href='{$video_url}'><img src='{$preview_src}'/></a>";
}
}
$description = array_merge($description, $content, $video_description);
break;
}
case 'page':
if ($this->disable_html) {
array_push($description,
$this->attachment_delimiter,
"{$attachment->page->title}: https://vk.com/page-{$attachment->page->group_id}_{$attachment->page->id}");
} else {
array_push($description,
$this->attachment_delimiter,
"<a href='https://vk.com/page-{$attachment->page->group_id}_{$attachment->page->id}'>{$attachment->page->title}</a>");
}
break;
}
}
}
if (isset($post->copy_history)) {
foreach ($post->copy_history as $repost) {
$author_id = isset($repost->signer_id) && isset($profiles[$repost->signer_id])
? $repost->signer_id : $repost->owner_id;
if ($author_id < 0) {
$author_name = $groups[abs($author_id)]->name;
$author_link = 'https://vk.com/' . $groups[abs($author_id)]->screen_name;
} else {
$author_name = $profiles[$author_id]->first_name . ' '
. $profiles[$author_id]->last_name;
$author_name_ins = $profiles[$author_id]->first_name_ins . ' '
. $profiles[$author_id]->last_name_ins;
$author_name_gen = $profiles[$author_id]->first_name_gen . ' '
. $profiles[$author_id]->last_name_gen;
$author_link = 'https://vk.com/' . $profiles[$author_id]->screen_name;
$author_ins = $this->disable_html
? "$author_name_ins ($author_link)"
: "<a href='$author_link'>$author_name_ins</a>";
$author_gen = $this->disable_html
? "$author_name_gen ($author_link)"
: "<a href='$author_link'>$author_name_gen</a>";
}
$author = $this->disable_html
? "$author_name ($author_link)"
: "<a href='$author_link'>$author_name</a>";
if (!isset($author_ins)) {
$author_ins = $author;
}
if (!isset($author_gen)) {
$author_gen = $author;
}
if (isset($repost->signer_id)) {
$repost_owner = $groups[abs($repost->owner_id)]->name;
$repost_owner_url = "https://vk.com/{$groups[abs($repost->owner_id)]->screen_name}";
if ($this->disable_html) {
$repost_place = " " .self::COMMUNITY_REPOST_TITLE_ABL . " $repost_owner ($repost_owner_url)";
} else {
$repost_place = " " . self::COMMUNITY_REPOST_TITLE_ABL . " <a href='$repost_owner_url'>$repost_owner</a>";
}
$author .= $repost_place;
$author_gen .= $repost_place;
$author_ins .= $repost_place;
}
$repost_delimiter = preg_replace('/\{author\}/u', $author, $this->repost_delimiter);
$repost_delimiter = preg_replace('/\{author_ins\}/u', $author_ins, $repost_delimiter);
$repost_delimiter = preg_replace('/\{author_gen\}/u', $author_gen, $repost_delimiter);
$description[] = $repost_delimiter;
$this->extractDescription($description, $videos, $repost, $profiles, $groups);
if (preg_match($this->delimiter_regex, end($description)) === 1) {
array_pop($description);
}
}
}
}
/**
* Get posts of wall
*
* @param string $api_method API method name
* @param int $offset offset for wall.get
* @param bool $donut whether retrieve donut only posts or others
* @param array $params additional key-value request parameters
*
* @return mixed Json VK response in appropriate PHP type
* @throws Exception If unsupported API method name is passed or data retrieving is failed
*/
protected function getContent($api_method, $offset = null, $donut = false,
$params = array('extended'=> '1', 'fields' => 'first_name_ins,last_name_ins,first_name_gen,last_name_gen,screen_name'))
{
$url = self::API_BASE_URL . $api_method . '?v=5.131';
if (isset($this->access_token)) {
$url .= "&access_token={$this->access_token}";
}
switch ($api_method) {
case "users.get":
unset($params['extended']);
break;
case "wall.get":
if (!empty($this->domain)) {
$url .= "&domain={$this->domain}";
} else {
$url .= "&owner_id={$this->owner_id}";
}
$default_count = 100;
if (!empty($offset)) {
$url .= "&offset={$offset}";
}
if ($donut) {
$url .= "&filter=donut";
}
break;
case "newsfeed.search":
$url .= "&q=" . urlencode($this->global_search);
$default_count = 200;
if (!empty($offset)) {
$url .= "&start_from={$offset}";
}
break;
case "newsfeed.getRecommended":
case "newsfeed.get":
$default_count = 100;
$params['filters'] = 'post';
if ($this->news_sources) {
$params['source_ids'] = $this->news_sources;
}
if (!empty($offset)) {
$url .= "&start_from={$offset}";
}
break;
case "video.get":
$default_count = 200;
if (!empty($offset)) {
$url .= "&offset={$offset}";
}
break;
default:
throw new Exception("Passed unsupported VK API method name '{$api_method}'", 400);
}
foreach ($params as $key => $value) {
$url .= "&{$key}={$value}";
}
if ($api_method !== "users.get") {
$total_count = ($api_method === "video.get") ? 200 : $this->count;
if (!empty($offset) && mb_substr($api_method, 0, 8) !== "newsfeed") {
$count = min($total_count - $offset, $default_count);
} else {
$count = min($total_count, $default_count);
}
$url .= "&count={$count}";
}
$this->connector->openConnection();
try {
$content = $this->connector->getContent($url, null, true);
$this->connector->closeConnection();
return json_decode($content);
} catch (Exception $exc) {
$this->connector->closeConnection();
throw new Exception("Failed to get content of URL {$url}: " . $exc->getMessage(), $exc->getCode());
}
}
/**
* Generate title using text of post
*
* @param array $raw_description post paragraphs
* @return string generated title
*/
protected function getTitle($raw_description)
{
if (empty($raw_description)) {
return self::EMPTY_POST_TITLE;
}
$description = array_fill(0, count($raw_description), null);
foreach ($raw_description as $par_idx => $par) {
$description[$par_idx] = $par;
}
$repost_delimiter_regex = '/^' . preg_replace('/\\\{author[^}]*\\\}/u', '.*', preg_quote($this->repost_delimiter, '/')) . '$/su';
foreach ($description as $par_idx => &$paragraph) {
if (preg_match('/^\s*(?:' . self::HASH_TAG_PATTERN . '\s*)*$/u', $paragraph) === 1 // paragraph contains only hash tags
|| preg_match($this->delimiter_regex, $paragraph) === 1
|| preg_match($repost_delimiter_regex, $paragraph) === 1) {
unset($description[$par_idx]);
continue;
}
if (!$this->disable_html) {
$paragraph = preg_replace('/<[^>]+?>/u', '', $paragraph); // remove all tags
$paragraph = strtr($paragraph, array('<' => '<',
'>' => '>',
'"' => '"' ,
''' => '\''));
}
if (preg_match($this->delimiter_regex, $paragraph) === 1) {
$paragraph = "";
} else {
$paragraph = trim(preg_replace(self::TEXTUAL_LINK_PATTERN, self::TEXTUAL_LINK_REMOVE_PATTERN, $paragraph));
}
}
if (preg_match('/^\s*$/u', implode(PHP_EOL, $description)) === 1) {
return self::EMPTY_POST_TITLE;
}
if (!function_exists('remove_underscores_from_hash_tag')) {
function remove_underscores_from_hash_tag($match)
{
return str_replace('_', ' ', $match[1]);
}
}
$curr_title_length = 0;
$slice_length = 0;
foreach ($description as $par_idx => &$paragraph) {
// hash tags (if exist) are semantic part of paragraph
$paragraph = preg_replace_callback('/' . self::HASH_TAG_PATTERN . '/u',
'remove_underscores_from_hash_tag', # anonymous function only in PHP>=5.3.0
$paragraph);
if ($curr_title_length < self::MAX_TITLE_LENGTH) {
if (preg_match(self::EMPTY_STRING_PATTERN, $paragraph) === 1) {
unset($description[$par_idx]);
continue;
}
if(mb_strlen($paragraph) >= self::MIN_PARAGRAPH_LENGTH_FOR_TITLE
|| $curr_title_length + self::MIN_PARAGRAPH_LENGTH_FOR_TITLE < self::MAX_TITLE_LENGTH) {
if (!in_array(mb_substr($paragraph, -1), array('.', '!', '?', ',', ':', ';'))) {
$paragraph .= '.';
}
$curr_title_length += mb_strlen($paragraph);
$slice_length += 1;
} else {
break;
}
}
}
$full_title = implode(' ', array_slice($description, 0, $slice_length));
if (mb_strlen($full_title) > self::MAX_TITLE_LENGTH) {
$split = preg_split('/\s+/u', utf8_strrev(mb_substr($full_title, 0, self::MAX_TITLE_LENGTH)), 2);
$full_title = isset($split[1]) ? utf8_strrev($split[1]) : utf8_strrev($split[0]);
$last_char = mb_substr($full_title, -1);
if (in_array($last_char, array(',', ':', ';', '-'))) {
$full_title = mb_substr($full_title, 0, -1) . '...';
} elseif (!in_array($last_char, array('.', '!', '?', ')'))) {
$full_title .= '...';
}
}
$full_title = mb_strtoupper(mb_substr($full_title, 0, 1)) . mb_substr($full_title, 1);
return $full_title;
}
protected function getPreviewAndOriginal($sizes) {
$photos = array();