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