src/Model/ItemContent.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/ItemContent.php
   5  */
   6
   7 namespace Friendica\Model;
   8
   9 use Friendica\BaseObject;
  10 use Friendica\Content\Text;
  11 use Friendica\Core\PConfig;
  12 use Friendica\Core\Protocol;
  13
  14 require_once 'boot.php';
  15 require_once 'include/items.php';
  16 require_once 'include/text.php';
  17
  18 class ItemContent extends BaseObject
  19 {
  20         /**
  21          * @brief Convert a message into plaintext for connectors to other networks
  22          *
  23          * @param array  $item           The message array that is about to be posted
  24          * @param int    $limit          The maximum number of characters when posting to that network
  25          * @param bool   $includedlinks  Has an attached link to be included into the message?
  26          * @param int    $htmlmode       This controls the behavior of the BBCode conversion
  27          * @param string $target_network Name of the network where the post should go to.
  28          *
  29          * @see \Friendica\Content\Text\BBCode::getAttachedData
  30          *
  31          * @return array Same array structure than \Friendica\Content\Text\BBCode::getAttachedData
  32          */
  33         public static function getPlaintextPost($item, $limit = 0, $includedlinks = false, $htmlmode = 2, $target_network = '')
  34         {
  35                 // Remove hashtags
  36                 $URLSearchString = '^\[\]';
  37                 $body = preg_replace("/([#@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $item['body']);
  38
  39                 // Add an URL element if the text contains a raw link
  40                 $body = preg_replace('/([^\]\=\'"]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism',
  41                         '$1[url]$2[/url]', $body);
  42
  43                 // Remove the abstract
  44                 $body = Text\BBCode::stripAbstract($body);
  45
  46                 // At first look at data that is attached via "type-..." stuff
  47                 // This will hopefully replaced with a dedicated bbcode later
  48                 //$post = self::getAttachedData($b['body']);
  49                 $post = Text\BBCode::getAttachedData($body, $item);
  50
  51                 if (($item['title'] != '') && ($post['text'] != '')) {
  52                         $post['text'] = trim($item['title'] . "\n\n" . $post['text']);
  53                 } elseif ($item['title'] != '') {
  54                         $post['text'] = trim($item['title']);
  55                 }
  56
  57                 $abstract = '';
  58
  59                 // Fetch the abstract from the given target network
  60                 if ($target_network != '') {
  61                         $default_abstract = Text\BBCode::getAbstract($item['body']);
  62                         $abstract = Text\BBCode::getAbstract($item['body'], $target_network);
  63
  64                         // If we post to a network with no limit we only fetch
  65                         // an abstract exactly for this network
  66                         if (($limit == 0) && ($abstract == $default_abstract)) {
  67                                 $abstract = '';
  68                         }
  69                 } else {// Try to guess the correct target network
  70                         switch ($htmlmode) {
  71                                 case 8:
  72                                         $abstract = Text\BBCode::getAbstract($item['body'], Protocol::TWITTER);
  73                                         break;
  74
  75                                 case 7:
  76                                         $abstract = Text\BBCode::getAbstract($item['body'], Protocol::STATUSNET);
  77                                         break;
  78
  79                                 default: // We don't know the exact target.
  80                                         // We fetch an abstract since there is a posting limit.
  81                                         if ($limit > 0) {
  82                                                 $abstract = Text\BBCode::getAbstract($item['body']);
  83                                         }
  84                         }
  85                 }
  86
  87                 if ($abstract != '') {
  88                         $post['text'] = $abstract;
  89
  90                         if ($post['type'] == 'text') {
  91                                 $post['type'] = 'link';
  92                                 $post['url'] = $item['plink'];
  93                         }
  94                 }
  95
  96                 $html = Text\BBCode::convert($post['text'] . defaults($post, 'after', ''), false, $htmlmode);
  97                 $msg = Text\HTML::toPlaintext($html, 0, true);
  98                 $msg = trim(html_entity_decode($msg, ENT_QUOTES, 'UTF-8'));
  99
 100                 $link = '';
 101                 if ($includedlinks) {
 102                         if ($post['type'] == 'link') {
 103                                 $link = $post['url'];
 104                         } elseif ($post['type'] == 'text') {
 105                                 $link = defaults($post, 'url', '');
 106                         } elseif ($post['type'] == 'video') {
 107                                 $link = $post['url'];
 108                         } elseif ($post['type'] == 'photo') {
 109                                 $link = $post['image'];
 110                         }
 111
 112                         if (($msg == '') && isset($post['title'])) {
 113                                 $msg = trim($post['title']);
 114                         }
 115
 116                         if (($msg == '') && isset($post['description'])) {
 117                                 $msg = trim($post['description']);
 118                         }
 119
 120                         // If the link is already contained in the post, then it neeedn't to be added again
 121                         // But: if the link is beyond the limit, then it has to be added.
 122                         if (($link != '') && strstr($msg, $link)) {
 123                                 $pos = strpos($msg, $link);
 124
 125                                 // Will the text be shortened in the link?
 126                                 // Or is the link the last item in the post?
 127                                 if (($limit > 0) && ($pos < $limit) && (($pos + 23 > $limit) || ($pos + strlen($link) == strlen($msg)))) {
 128                                         $msg = trim(str_replace($link, '', $msg));
 129                                 } elseif (($limit == 0) || ($pos < $limit)) {
 130                                         // The limit has to be increased since it will be shortened - but not now
 131                                         // Only do it with Twitter (htmlmode = 8)
 132                                         if (($limit > 0) && (strlen($link) > 23) && ($htmlmode == 8)) {
 133                                                 $limit = $limit - 23 + strlen($link);
 134                                         }
 135
 136                                         $link = '';
 137
 138                                         if ($post['type'] == 'text') {
 139                                                 unset($post['url']);
 140                                         }
 141                                 }
 142                         }
 143                 }
 144
 145                 if ($limit > 0) {
 146                         // Reduce multiple spaces
 147                         // When posted to a network with limited space, we try to gain space where possible
 148                         while (strpos($msg, '  ') !== false) {
 149                                 $msg = str_replace('  ', ' ', $msg);
 150                         }
 151
 152                         // Twitter is using its own limiter, so we always assume that shortened links will have this length
 153                         if (iconv_strlen($link, 'UTF-8') > 0) {
 154                                 $limit = $limit - 23;
 155                         }
 156
 157                         if (iconv_strlen($msg, 'UTF-8') > $limit) {
 158                                 if (($post['type'] == 'text') && isset($post['url'])) {
 159                                         $post['url'] = $item['plink'];
 160                                 } elseif (!isset($post['url'])) {
 161                                         $limit = $limit - 23;
 162                                         $post['url'] = $item['plink'];
 163                                 } elseif (strpos($item['body'], '[share') !== false) {
 164                                         $post['url'] = $item['plink'];
 165                                 } elseif (PConfig::get($item['uid'], 'system', 'no_intelligent_shortening')) {
 166                                         $post['url'] = $item['plink'];
 167                                 }
 168                                 $msg = Text\Plaintext::shorten($msg, $limit);
 169                         }
 170                 }
 171
 172                 $post['text'] = trim($msg);
 173
 174                 return $post;
 175         }
 176 }