include/plaintext.php

   1 <?php
   2 function get_attached_data($body) {
   3 /*
   4  - text:
   5  - type: link, video, photo
   6  - title:
   7  - url:
   8  - image:
   9  - description:
  10  - (thumbnail)
  11 */
  12
  13         // Simplify image codes
  14         $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
  15
  16         $post = array();
  17
  18         if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism",$body, $attached,  PREG_SET_ORDER)) {
  19                 foreach ($attached AS $data) {
  20                         if (!in_array($data[1], array("type-link", "type-video", "type-photo")))
  21                                 continue;
  22
  23                         $post["type"] = substr($data[1], 5);
  24
  25                         $post["text"] = trim(str_replace($data[0], "", $body));
  26
  27                         $attacheddata = $data[2];
  28
  29                         $URLSearchString = "^\[\]";
  30
  31                         if (preg_match("/\[img\]([$URLSearchString]*)\[\/img\]/ism", $attacheddata, $matches))
  32                                 $post["image"] = $matches[1];
  33
  34                         if (preg_match("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
  35                                 $post["url"] = $matches[1];
  36                                 $post["title"] = $matches[2];
  37                         }
  38
  39                         // Search for description
  40                         if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches))
  41                                 $post["description"] = $matches[1];
  42
  43                 }
  44         }
  45
  46         // if nothing is found, it maybe having an image.
  47         if (!isset($post["type"])) {
  48                 require_once("mod/parse_url.php");
  49                 require_once("include/Photo.php");
  50
  51                 $URLSearchString = "^\[\]";
  52                 if (preg_match_all("(\[url=([$URLSearchString]*)\]\s*\[img\]([$URLSearchString]*)\[\/img\]\s*\[\/url\])ism", $body, $pictures,  PREG_SET_ORDER)) {
  53                         if (count($pictures) == 1) {
  54                                 // Checking, if the link goes to a picture
  55                                 $data = parseurl_getsiteinfo_cached($pictures[0][1], true);
  56                                 if ($data["type"] == "photo") {
  57                                         $post["type"] = "photo";
  58                                         if (isset($data["images"][0])) {
  59                                                 $post["image"] = $data["images"][0]["src"];
  60                                                 $post["url"] = $data["url"];
  61                                         } else
  62                                                 $post["image"] = $data["url"];
  63
  64                                         $post["preview"] = $pictures[0][2];
  65                                         $post["text"] = str_replace($pictures[0][0], "", $body);
  66                                 } else {
  67                                         $imgdata = get_photo_info($pictures[0][1]);
  68                                         if (substr($imgdata["mime"], 0, 6) == "image/") {
  69                                                 $post["type"] = "photo";
  70                                                 $post["image"] = $pictures[0][1];
  71                                                 $post["preview"] = $pictures[0][2];
  72                                                 $post["text"] = str_replace($pictures[0][0], "", $body);
  73                                         }
  74                                 }
  75                         } elseif (count($pictures) > 1) {
  76                                 $post["type"] = "link";
  77                                 $post["url"] = $b["plink"];
  78                                 $post["image"] = $pictures[0][2];
  79                                 $post["text"] = $body;
  80                         }
  81                 } elseif (preg_match_all("(\[img\]([$URLSearchString]*)\[\/img\])ism", $body, $pictures,  PREG_SET_ORDER)) {
  82                         if (count($pictures) == 1) {
  83                                 $post["type"] = "photo";
  84                                 $post["image"] = $pictures[0][1];
  85                                 $post["text"] = str_replace($pictures[0][0], "", $body);
  86                         } elseif (count($pictures) > 1) {
  87                                 $post["type"] = "link";
  88                                 $post["url"] = $b["plink"];
  89                                 $post["image"] = $pictures[0][1];
  90                                 $post["text"] = $body;
  91                         }
  92                 }
  93
  94                 if (preg_match_all("(\[url\]([$URLSearchString]*)\[\/url\])ism", $body, $links,  PREG_SET_ORDER)) {
  95                         if (count($links) == 1) {
  96                                 $post["type"] = "text";
  97                                 $post["url"] = $links[0][1];
  98                                 $post["text"] = $body;
  99                         }
 100                 }
 101                 if (!isset($post["type"])) {
 102                         $post["type"] = "text";
 103                         $post["text"] = trim($body);
 104                 }
 105         } elseif (isset($post["url"]) AND ($post["type"] == "video")) {
 106                 require_once("mod/parse_url.php");
 107                 $data = parseurl_getsiteinfo_cached($post["url"], true);
 108
 109                 if (isset($data["images"][0]))
 110                         $post["image"] = $data["images"][0]["src"];
 111         }
 112
 113         return($post);
 114 }
 115
 116 function shortenmsg($msg, $limit, $twitter = false) {
 117         /// @TODO
 118         /// For Twitter URLs aren't shortened, but they have to be calculated as if.
 119
 120         $lines = explode("\n", $msg);
 121         $msg = "";
 122         $recycle = html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
 123         foreach ($lines AS $row=>$line) {
 124                 if (iconv_strlen(trim($msg."\n".$line), "UTF-8") <= $limit)
 125                         $msg = trim($msg."\n".$line);
 126                 // Is the new message empty by now or is it a reshared message?
 127                 elseif (($msg == "") OR (($row == 1) AND (substr($msg, 0, 4) == $recycle)))
 128                         $msg = iconv_substr(iconv_substr(trim($msg."\n".$line), 0, $limit, "UTF-8"), 0, -3, "UTF-8")."...";
 129                 else
 130                         break;
 131         }
 132         return($msg);
 133 }
 134
 135 /**
 136  * @brief Convert a message into plaintext for connectors to other networks
 137  *
 138  * @param App $a The application class
 139  * @param array $b The message array that is about to be posted
 140  * @param int $limit The maximum number of characters when posting to that network
 141  * @param bool $includedlinks Has an attached link to be included into the message?
 142  * @param int $htmlmode This triggers the behaviour of the bbcode conversion
 143  * @param string $target_network Name of the network where the post should go to.
 144  *
 145  * @return string The converted message
 146  */
 147 function plaintext($a, $b, $limit = 0, $includedlinks = false, $htmlmode = 2, $target_network = "") {
 148         require_once("include/bbcode.php");
 149         require_once("include/html2plain.php");
 150         require_once("include/network.php");
 151
 152         // Remove the hash tags
 153         $URLSearchString = "^\[\]";
 154         $body = preg_replace("/([#@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $b["body"]);
 155
 156         // Add an URL element if the text contains a raw link
 157         $body = preg_replace("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url]$2[/url]', $body);
 158
 159         // Remove the abstract
 160         $body = remove_abstract($body);
 161
 162         // At first look at data that is attached via "type-..." stuff
 163         // This will hopefully replaced with a dedicated bbcode later
 164         //$post = get_attached_data($b["body"]);
 165         $post = get_attached_data($body);
 166
 167         if (($b["title"] != "") AND ($post["text"] != ""))
 168                 $post["text"] = trim($b["title"]."\n\n".$post["text"]);
 169         elseif ($b["title"] != "")
 170                 $post["text"] = trim($b["title"]);
 171
 172         $abstract = "";
 173
 174         // Fetch the abstract from the given target network
 175         if ($target_network != "") {
 176                 $default_abstract = fetch_abstract($b["body"]);
 177                 $abstract = fetch_abstract($b["body"], $target_network);
 178
 179                 // If we post to a network with no limit we only fetch
 180                 // an abstract exactly for this network
 181                 if (($limit == 0) AND ($abstract == $default_abstract))
 182                         $abstract = "";
 183
 184         } else // Try to guess the correct target network
 185                 switch ($htmlmode) {
 186                         case 8:
 187                                 $abstract = fetch_abstract($b["body"], NETWORK_TWITTER);
 188                                 break;
 189                         case 7:
 190                                 $abstract = fetch_abstract($b["body"], NETWORK_STATUSNET);
 191                                 break;
 192                         case 6:
 193                                 $abstract = fetch_abstract($b["body"], NETWORK_APPNET);
 194                                 break;
 195                         default: // We don't know the exact target.
 196                                  // We fetch an abstract since there is a posting limit.
 197                                 if ($limit > 0)
 198                                         $abstract = fetch_abstract($b["body"]);
 199                 }
 200
 201         if ($abstract != "") {
 202                 $post["text"] = $abstract;
 203
 204                 if ($post["type"] == "text") {
 205                         $post["type"] = "link";
 206                         $post["url"] = $b["plink"];
 207                 }
 208         }
 209
 210         $html = bbcode($post["text"], false, false, $htmlmode);
 211         $msg = html2plain($html, 0, true);
 212         $msg = trim(html_entity_decode($msg,ENT_QUOTES,'UTF-8'));
 213
 214         $link = "";
 215         if ($includedlinks) {
 216                 if ($post["type"] == "link")
 217                         $link = $post["url"];
 218                 elseif ($post["type"] == "text")
 219                         $link = $post["url"];
 220                 elseif ($post["type"] == "video")
 221                         $link = $post["url"];
 222                 elseif ($post["type"] == "photo")
 223                         $link = $post["image"];
 224
 225                 if (($msg == "") AND isset($post["title"]))
 226                         $msg = trim($post["title"]);
 227
 228                 if (($msg == "") AND isset($post["description"]))
 229                         $msg = trim($post["description"]);
 230
 231                 // If the link is already contained in the post, then it neeedn't to be added again
 232                 // But: if the link is beyond the limit, then it has to be added.
 233                 if (($link != "") AND strstr($msg, $link)) {
 234                         $pos = strpos($msg, $link);
 235
 236                         // Will the text be shortened in the link?
 237                         // Or is the link the last item in the post?
 238                         if (($limit > 0) AND ($pos < $limit) AND (($pos + 23 > $limit) OR ($pos + strlen($link) == strlen($msg))))
 239                                 $msg = trim(str_replace($link, "", $msg));
 240                         elseif (($limit == 0) OR ($pos < $limit)) {
 241                                 // The limit has to be increased since it will be shortened - but not now
 242                                 // Only do it with Twitter (htmlmode = 8)
 243                                 if (($limit > 0) AND (strlen($link) > 23) AND ($htmlmode == 8))
 244                                         $limit = $limit - 23 + strlen($link);
 245
 246                                 $link = "";
 247
 248                                 if ($post["type"] == "text")
 249                                         unset($post["url"]);
 250                         }
 251                 }
 252         }
 253
 254         if ($limit > 0) {
 255                 // Reduce multiple spaces
 256                 // When posted to a network with limited space, we try to gain space where possible
 257                 while (strpos($msg, "  ") !== false)
 258                         $msg = str_replace("  ", " ", $msg);
 259
 260                 // Twitter is using its own limiter, so we always assume that shortened links will have this length
 261                 if (iconv_strlen($link, "UTF-8") > 0)
 262                         $limit = $limit - 23;
 263
 264                 if (iconv_strlen($msg, "UTF-8") > $limit) {
 265
 266                         if (($post["type"] == "text") AND isset($post["url"]))
 267                                 $post["url"] = $b["plink"];
 268                         elseif (!isset($post["url"])) {
 269                                 $limit = $limit - 23;
 270                                 $post["url"] = $b["plink"];
 271                         } elseif (strpos($b["body"], "[share") !== false)
 272                                 $post["url"] = $b["plink"];
 273                         elseif (get_pconfig($b["uid"], "system", "no_intelligent_shortening"))
 274                                 $post["url"] = $b["plink"];
 275
 276                         $msg = shortenmsg($msg, $limit);
 277                 }
 278         }
 279
 280         $post["text"] = trim($msg);
 281
 282         return($post);
 283 }
 284 ?>