include/plaintext.php

   1 <?php
   2
   3 require_once("include/Photo.php");
   4
   5 /**
   6  * @brief Fetches attachment data that were generated the old way
   7  *
   8  * @param string $body Message body
   9  * @return array
  10  * 'type' -> Message type ("link", "video", "photo")
  11  * 'text' -> Text before the shared message
  12  * 'after' -> Text after the shared message
  13  * 'image' -> Preview image of the message
  14  * 'url' -> Url to the attached message
  15  * 'title' -> Title of the attachment
  16  * 'description' -> Description of the attachment
  17  */
  18 function get_old_attachment_data($body) {
  19
  20         $post = array();
  21
  22         // Simplify image codes
  23         $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
  24
  25         if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism",$body, $attached,  PREG_SET_ORDER)) {
  26                 foreach ($attached AS $data) {
  27                         if (!in_array($data[1], array("type-link", "type-video", "type-photo")))
  28                                 continue;
  29
  30                         $post["type"] = substr($data[1], 5);
  31
  32                         $pos = strpos($body, $data[0]);
  33                         if ($pos > 0) {
  34                                 $post["text"] = trim(substr($body, 0, $pos));
  35                                 $post["after"] = trim(substr($body, $pos + strlen($data[0])));
  36                         } else
  37                                 $post["text"] = trim(str_replace($data[0], "", $body));
  38
  39                         $attacheddata = $data[2];
  40
  41                         $URLSearchString = "^\[\]";
  42
  43                         if (preg_match("/\[img\]([$URLSearchString]*)\[\/img\]/ism", $attacheddata, $matches)) {
  44
  45                                 $picturedata = get_photo_info($matches[1]);
  46
  47                                 if (($picturedata[0] >= 500) AND ($picturedata[0] >= $picturedata[1]))
  48                                         $post["image"] = $matches[1];
  49                                 else
  50                                         $post["preview"] = $matches[1];
  51                         }
  52
  53                         if (preg_match("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
  54                                 $post["url"] = $matches[1];
  55                                 $post["title"] = $matches[2];
  56                         }
  57
  58                         // Search for description
  59                         if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches))
  60                                 $post["description"] = $matches[1];
  61
  62                 }
  63         }
  64
  65         return $post;
  66 }
  67
  68 /**
  69  * @brief Fetches attachment data that were generated with the "attachment" element
  70  *
  71  * @param string $body Message body
  72  * @return array
  73  * 'type' -> Message type ("link", "video", "photo")
  74  * 'text' -> Text before the shared message
  75  * 'after' -> Text after the shared message
  76  * 'image' -> Preview image of the message
  77  * 'url' -> Url to the attached message
  78  * 'title' -> Title of the attachment
  79  * 'description' -> Description of the attachment
  80  */
  81 function get_attachment_data($body) {
  82
  83         $data = array();
  84
  85         if (!preg_match("/(.*)\[attachment(.*)\](.*?)\[\/attachment\](.*)/ism", $body, $match))
  86                 return get_old_attachment_data($body);
  87
  88         $attributes = $match[2];
  89
  90         $data["text"] = trim($match[1]);
  91
  92         $type = "";
  93         preg_match("/type='(.*?)'/ism", $attributes, $matches);
  94         if ($matches[1] != "")
  95                 $type = strtolower($matches[1]);
  96
  97         preg_match('/type="(.*?)"/ism', $attributes, $matches);
  98         if ($matches[1] != "")
  99                 $type = strtolower($matches[1]);
 100
 101         if ($type == "")
 102                 return(array());
 103
 104         if (!in_array($type, array("link", "audio", "photo", "video")))
 105                 return(array());
 106
 107         if ($type != "")
 108                 $data["type"] = $type;
 109
 110         $url = "";
 111         preg_match("/url='(.*?)'/ism", $attributes, $matches);
 112         if ($matches[1] != "")
 113                 $url = $matches[1];
 114
 115         preg_match('/url="(.*?)"/ism', $attributes, $matches);
 116         if ($matches[1] != "")
 117                 $url = $matches[1];
 118
 119         $url = html_entity_decode($url, ENT_QUOTES, 'UTF-8');
 120
 121         if ($url != "")
 122                 $data["url"] = $url;
 123
 124         $title = "";
 125         preg_match("/title='(.*?)'/ism", $attributes, $matches);
 126         if ($matches[1] != "")
 127                 $title = $matches[1];
 128
 129         preg_match('/title="(.*?)"/ism', $attributes, $matches);
 130         if ($matches[1] != "")
 131                 $title = $matches[1];
 132
 133         $title = bbcode(html_entity_decode($title, ENT_QUOTES, 'UTF-8'), false, false, true);
 134         $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
 135         $title = str_replace(array("[", "]"), array("&#91;", "&#93;"), $title);
 136         if ($title != "")
 137                 $data["title"] = $title;
 138
 139         $image = "";
 140         preg_match("/image='(.*?)'/ism", $attributes, $matches);
 141         if ($matches[1] != "")
 142                 $image = $matches[1];
 143
 144         preg_match('/image="(.*?)"/ism', $attributes, $matches);
 145         if ($matches[1] != "")
 146                 $image = $matches[1];
 147
 148         if ($image != "")
 149                 $data["image"] = $image;
 150
 151         $preview = "";
 152         preg_match("/preview='(.*?)'/ism", $attributes, $matches);
 153         if ($matches[1] != "")
 154                 $preview = $matches[1];
 155
 156         preg_match('/preview="(.*?)"/ism', $attributes, $matches);
 157         if ($matches[1] != "")
 158                 $preview = $matches[1];
 159
 160         if ($preview != "")
 161                 $data["preview"] = $preview;
 162
 163         $data["description"] = trim($match[3]);
 164
 165         $data["after"] = trim($match[4]);
 166
 167         return($data);
 168 }
 169
 170 function get_attached_data($body) {
 171 /*
 172  - text:
 173  - type: link, video, photo
 174  - title:
 175  - url:
 176  - image:
 177  - description:
 178  - (thumbnail)
 179 */
 180
 181         $post = get_attachment_data($body);
 182
 183         // if nothing is found, it maybe having an image.
 184         if (!isset($post["type"])) {
 185                 require_once("mod/parse_url.php");
 186                 require_once("include/Photo.php");
 187
 188                 $URLSearchString = "^\[\]";
 189                 if (preg_match_all("(\[url=([$URLSearchString]*)\]\s*\[img\]([$URLSearchString]*)\[\/img\]\s*\[\/url\])ism", $body, $pictures,  PREG_SET_ORDER)) {
 190                         if (count($pictures) == 1) {
 191                                 // Checking, if the link goes to a picture
 192                                 $data = parseurl_getsiteinfo_cached($pictures[0][1], true);
 193                                 if ($data["type"] == "photo") {
 194                                         $post["type"] = "photo";
 195                                         if (isset($data["images"][0])) {
 196                                                 $post["image"] = $data["images"][0]["src"];
 197                                                 $post["url"] = $data["url"];
 198                                         } else
 199                                                 $post["image"] = $data["url"];
 200
 201                                         $post["preview"] = $pictures[0][2];
 202                                         $post["text"] = str_replace($pictures[0][0], "", $body);
 203                                 } else {
 204                                         $imgdata = get_photo_info($pictures[0][1]);
 205                                         if (substr($imgdata["mime"], 0, 6) == "image/") {
 206                                                 $post["type"] = "photo";
 207                                                 $post["image"] = $pictures[0][1];
 208                                                 $post["preview"] = $pictures[0][2];
 209                                                 $post["text"] = str_replace($pictures[0][0], "", $body);
 210                                         }
 211                                 }
 212                         } elseif (count($pictures) > 1) {
 213                                 $post["type"] = "link";
 214                                 $post["url"] = $b["plink"];
 215                                 $post["image"] = $pictures[0][2];
 216                                 $post["text"] = $body;
 217                         }
 218                 } elseif (preg_match_all("(\[img\]([$URLSearchString]*)\[\/img\])ism", $body, $pictures,  PREG_SET_ORDER)) {
 219                         if (count($pictures) == 1) {
 220                                 $post["type"] = "photo";
 221                                 $post["image"] = $pictures[0][1];
 222                                 $post["text"] = str_replace($pictures[0][0], "", $body);
 223                         } elseif (count($pictures) > 1) {
 224                                 $post["type"] = "link";
 225                                 $post["url"] = $b["plink"];
 226                                 $post["image"] = $pictures[0][1];
 227                                 $post["text"] = $body;
 228                         }
 229                 }
 230
 231                 if (preg_match_all("(\[url\]([$URLSearchString]*)\[\/url\])ism", $body, $links,  PREG_SET_ORDER)) {
 232                         if (count($links) == 1) {
 233                                 $post["type"] = "text";
 234                                 $post["url"] = $links[0][1];
 235                                 $post["text"] = $body;
 236                         }
 237                 }
 238                 if (!isset($post["type"])) {
 239                         $post["type"] = "text";
 240                         $post["text"] = trim($body);
 241                 }
 242         } elseif (isset($post["url"]) AND ($post["type"] == "video")) {
 243                 require_once("mod/parse_url.php");
 244                 $data = parseurl_getsiteinfo_cached($post["url"], true);
 245
 246                 if (isset($data["images"][0]))
 247                         $post["image"] = $data["images"][0]["src"];
 248         }
 249
 250         return($post);
 251 }
 252
 253 function shortenmsg($msg, $limit, $twitter = false) {
 254         /// @TODO
 255         /// For Twitter URLs aren't shortened, but they have to be calculated as if.
 256
 257         $lines = explode("\n", $msg);
 258         $msg = "";
 259         $recycle = html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
 260         foreach ($lines AS $row=>$line) {
 261                 if (iconv_strlen(trim($msg."\n".$line), "UTF-8") <= $limit)
 262                         $msg = trim($msg."\n".$line);
 263                 // Is the new message empty by now or is it a reshared message?
 264                 elseif (($msg == "") OR (($row == 1) AND (substr($msg, 0, 4) == $recycle)))
 265                         $msg = iconv_substr(iconv_substr(trim($msg."\n".$line), 0, $limit, "UTF-8"), 0, -3, "UTF-8")."...";
 266                 else
 267                         break;
 268         }
 269         return($msg);
 270 }
 271
 272 /**
 273  * @brief Convert a message into plaintext for connectors to other networks
 274  *
 275  * @param App $a The application class
 276  * @param array $b The message array that is about to be posted
 277  * @param int $limit The maximum number of characters when posting to that network
 278  * @param bool $includedlinks Has an attached link to be included into the message?
 279  * @param int $htmlmode This triggers the behaviour of the bbcode conversion
 280  * @param string $target_network Name of the network where the post should go to.
 281  *
 282  * @return string The converted message
 283  */
 284 function plaintext($a, $b, $limit = 0, $includedlinks = false, $htmlmode = 2, $target_network = "") {
 285         require_once("include/bbcode.php");
 286         require_once("include/html2plain.php");
 287         require_once("include/network.php");
 288
 289         // Remove the hash tags
 290         $URLSearchString = "^\[\]";
 291         $body = preg_replace("/([#@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $b["body"]);
 292
 293         // Add an URL element if the text contains a raw link
 294         $body = preg_replace("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url]$2[/url]', $body);
 295
 296         // Remove the abstract
 297         $body = remove_abstract($body);
 298
 299         // At first look at data that is attached via "type-..." stuff
 300         // This will hopefully replaced with a dedicated bbcode later
 301         //$post = get_attached_data($b["body"]);
 302         $post = get_attached_data($body);
 303
 304         if (($b["title"] != "") AND ($post["text"] != ""))
 305                 $post["text"] = trim($b["title"]."\n\n".$post["text"]);
 306         elseif ($b["title"] != "")
 307                 $post["text"] = trim($b["title"]);
 308
 309         $abstract = "";
 310
 311         // Fetch the abstract from the given target network
 312         if ($target_network != "") {
 313                 $default_abstract = fetch_abstract($b["body"]);
 314                 $abstract = fetch_abstract($b["body"], $target_network);
 315
 316                 // If we post to a network with no limit we only fetch
 317                 // an abstract exactly for this network
 318                 if (($limit == 0) AND ($abstract == $default_abstract))
 319                         $abstract = "";
 320
 321         } else // Try to guess the correct target network
 322                 switch ($htmlmode) {
 323                         case 8:
 324                                 $abstract = fetch_abstract($b["body"], NETWORK_TWITTER);
 325                                 break;
 326                         case 7:
 327                                 $abstract = fetch_abstract($b["body"], NETWORK_STATUSNET);
 328                                 break;
 329                         case 6:
 330                                 $abstract = fetch_abstract($b["body"], NETWORK_APPNET);
 331                                 break;
 332                         default: // We don't know the exact target.
 333                                  // We fetch an abstract since there is a posting limit.
 334                                 if ($limit > 0)
 335                                         $abstract = fetch_abstract($b["body"]);
 336                 }
 337
 338         if ($abstract != "") {
 339                 $post["text"] = $abstract;
 340
 341                 if ($post["type"] == "text") {
 342                         $post["type"] = "link";
 343                         $post["url"] = $b["plink"];
 344                 }
 345         }
 346
 347         $html = bbcode($post["text"].$post["after"], false, false, $htmlmode);
 348         $msg = html2plain($html, 0, true);
 349         $msg = trim(html_entity_decode($msg,ENT_QUOTES,'UTF-8'));
 350
 351         $link = "";
 352         if ($includedlinks) {
 353                 if ($post["type"] == "link")
 354                         $link = $post["url"];
 355                 elseif ($post["type"] == "text")
 356                         $link = $post["url"];
 357                 elseif ($post["type"] == "video")
 358                         $link = $post["url"];
 359                 elseif ($post["type"] == "photo")
 360                         $link = $post["image"];
 361
 362                 if (($msg == "") AND isset($post["title"]))
 363                         $msg = trim($post["title"]);
 364
 365                 if (($msg == "") AND isset($post["description"]))
 366                         $msg = trim($post["description"]);
 367
 368                 // If the link is already contained in the post, then it neeedn't to be added again
 369                 // But: if the link is beyond the limit, then it has to be added.
 370                 if (($link != "") AND strstr($msg, $link)) {
 371                         $pos = strpos($msg, $link);
 372
 373                         // Will the text be shortened in the link?
 374                         // Or is the link the last item in the post?
 375                         if (($limit > 0) AND ($pos < $limit) AND (($pos + 23 > $limit) OR ($pos + strlen($link) == strlen($msg))))
 376                                 $msg = trim(str_replace($link, "", $msg));
 377                         elseif (($limit == 0) OR ($pos < $limit)) {
 378                                 // The limit has to be increased since it will be shortened - but not now
 379                                 // Only do it with Twitter (htmlmode = 8)
 380                                 if (($limit > 0) AND (strlen($link) > 23) AND ($htmlmode == 8))
 381                                         $limit = $limit - 23 + strlen($link);
 382
 383                                 $link = "";
 384
 385                                 if ($post["type"] == "text")
 386                                         unset($post["url"]);
 387                         }
 388                 }
 389         }
 390
 391         if ($limit > 0) {
 392                 // Reduce multiple spaces
 393                 // When posted to a network with limited space, we try to gain space where possible
 394                 while (strpos($msg, "  ") !== false)
 395                         $msg = str_replace("  ", " ", $msg);
 396
 397                 // Twitter is using its own limiter, so we always assume that shortened links will have this length
 398                 if (iconv_strlen($link, "UTF-8") > 0)
 399                         $limit = $limit - 23;
 400
 401                 if (iconv_strlen($msg, "UTF-8") > $limit) {
 402
 403                         if (($post["type"] == "text") AND isset($post["url"]))
 404                                 $post["url"] = $b["plink"];
 405                         elseif (!isset($post["url"])) {
 406                                 $limit = $limit - 23;
 407                                 $post["url"] = $b["plink"];
 408                         } elseif (strpos($b["body"], "[share") !== false)
 409                                 $post["url"] = $b["plink"];
 410                         elseif (get_pconfig($b["uid"], "system", "no_intelligent_shortening"))
 411                                 $post["url"] = $b["plink"];
 412
 413                         $msg = shortenmsg($msg, $limit);
 414                 }
 415         }
 416
 417         $post["text"] = trim($msg);
 418
 419         return($post);
 420 }
 421 ?>