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1 <?php 2 /*************************************************************************** 3 * bbcode.php 4 * ------------------- 5 * begin : Saturday, Feb 13, 2001 6 * copyright : (C) 2001 The phpBB Group 7 * email : support@phpbb.com 8 * 9 * $Id: bbcode.php 5589 2006-02-26 17:35:17Z grahamje $ 10 * 11 ***************************************************************************/ 12 13 /*************************************************************************** 14 * 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation; either version 2 of the License, or 18 * (at your option) any later version. 19 * 20 ***************************************************************************/ 21 22 if ( !defined('IN_PHPBB') ) 23 { 24 die("Hacking attempt"); 25 } 26 27 define("BBCODE_UID_LEN", 10); 28 29 // global that holds loaded-and-prepared bbcode templates, so we only have to do 30 // that stuff once. 31 32 $bbcode_tpl = null; 33 34 /** 35 * Loads bbcode templates from the bbcode.tpl file of the current template set. 36 * Creates an array, keys are bbcode names like "b_open" or "url", values 37 * are the associated template. 38 * Probably pukes all over the place if there's something really screwed 39 * with the bbcode.tpl file. 40 * 41 * Nathan Codding, Sept 26 2001. 42 */ 43 function load_bbcode_template() 44 { 45 global $template; 46 $tpl_filename = $template->make_filename('bbcode.tpl'); 47 $tpl = fread(fopen($tpl_filename, 'r'), filesize($tpl_filename)); 48 49 // replace \ with \\ and then ' with \'. 50 $tpl = str_replace('\\', '\\\\', $tpl); 51 $tpl = str_replace('\'', '\\\'', $tpl); 52 53 // strip newlines. 54 $tpl = str_replace("\n", '', $tpl); 55 56 // Turn template blocks into PHP assignment statements for the values of $bbcode_tpls.. 57 $tpl = preg_replace('#<!-- BEGIN (.*?) -->(.*?)<!-- END (.*?) -->#', "\n" . '$bbcode_tpls[\'\\1\'] = \'\\2\';', $tpl); 58 59 $bbcode_tpls = array(); 60 61 eval($tpl); 62 63 return $bbcode_tpls; 64 } 65 66 67 /** 68 * Prepares the loaded bbcode templates for insertion into preg_replace() 69 * or str_replace() calls in the bbencode_second_pass functions. This 70 * means replacing template placeholders with the appropriate preg backrefs 71 * or with language vars. NOTE: If you change how the regexps work in 72 * bbencode_second_pass(), you MUST change this function. 73 * 74 * Nathan Codding, Sept 26 2001 75 * 76 */ 77 function prepare_bbcode_template($bbcode_tpl) 78 { 79 global $lang; 80 81 $bbcode_tpl['olist_open'] = str_replace('{LIST_TYPE}', '\\1', $bbcode_tpl['olist_open']); 82 83 $bbcode_tpl['color_open'] = str_replace('{COLOR}', '\\1', $bbcode_tpl['color_open']); 84 85 $bbcode_tpl['size_open'] = str_replace('{SIZE}', '\\1', $bbcode_tpl['size_open']); 86 87 $bbcode_tpl['quote_open'] = str_replace('{L_QUOTE}', $lang['Quote'], $bbcode_tpl['quote_open']); 88 89 $bbcode_tpl['quote_username_open'] = str_replace('{L_QUOTE}', $lang['Quote'], $bbcode_tpl['quote_username_open']); 90 $bbcode_tpl['quote_username_open'] = str_replace('{L_WROTE}', $lang['wrote'], $bbcode_tpl['quote_username_open']); 91 $bbcode_tpl['quote_username_open'] = str_replace('{USERNAME}', '\\1', $bbcode_tpl['quote_username_open']); 92 93 $bbcode_tpl['code_open'] = str_replace('{L_CODE}', $lang['Code'], $bbcode_tpl['code_open']); 94 95 $bbcode_tpl['img'] = str_replace('{URL}', '\\1', $bbcode_tpl['img']); 96 97 // We do URLs in several different ways.. 98 $bbcode_tpl['url1'] = str_replace('{URL}', '\\1', $bbcode_tpl['url']); 99 $bbcode_tpl['url1'] = str_replace('{DESCRIPTION}', '\\1', $bbcode_tpl['url1']); 100 101 $bbcode_tpl['url2'] = str_replace('{URL}', 'http://\\1', $bbcode_tpl['url']); 102 $bbcode_tpl['url2'] = str_replace('{DESCRIPTION}', '\\1', $bbcode_tpl['url2']); 103 104 $bbcode_tpl['url3'] = str_replace('{URL}', '\\1', $bbcode_tpl['url']); 105 $bbcode_tpl['url3'] = str_replace('{DESCRIPTION}', '\\2', $bbcode_tpl['url3']); 106 107 $bbcode_tpl['url4'] = str_replace('{URL}', 'http://\\1', $bbcode_tpl['url']); 108 $bbcode_tpl['url4'] = str_replace('{DESCRIPTION}', '\\3', $bbcode_tpl['url4']); 109 110 $bbcode_tpl['email'] = str_replace('{EMAIL}', '\\1', $bbcode_tpl['email']); 111 112 define("BBCODE_TPL_READY", true); 113 114 return $bbcode_tpl; 115 } 116 117 118 /** 119 * Does second-pass bbencoding. This should be used before displaying the message in 120 * a thread. Assumes the message is already first-pass encoded, and we are given the 121 * correct UID as used in first-pass encoding. 122 */ 123 function bbencode_second_pass($text, $uid) 124 { 125 global $lang, $bbcode_tpl; 126 127 $text = preg_replace('#(script|about|applet|activex|chrome):#is', "\\1:", $text); 128 129 // pad it with a space so we can distinguish between FALSE and matching the 1st char (index 0). 130 // This is important; bbencode_quote(), bbencode_list(), and bbencode_code() all depend on it. 131 $text = " " . $text; 132 133 // First: If there isn't a "[" and a "]" in the message, don't bother. 134 if (! (strpos($text, "[") && strpos($text, "]")) ) 135 { 136 // Remove padding, return. 137 $text = substr($text, 1); 138 return $text; 139 } 140 141 // Only load the templates ONCE.. 142 if (!defined("BBCODE_TPL_READY")) 143 { 144 // load templates from file into array. 145 $bbcode_tpl = load_bbcode_template(); 146 147 // prepare array for use in regexps. 148 $bbcode_tpl = prepare_bbcode_template($bbcode_tpl); 149 } 150 151 // [CODE] and [/CODE] for posting code (HTML, PHP, C etc etc) in your posts. 152 $text = bbencode_second_pass_code($text, $uid, $bbcode_tpl); 153 154 // [QUOTE] and [/QUOTE] for posting replies with quote, or just for quoting stuff. 155 $text = str_replace("[quote:$uid]", $bbcode_tpl['quote_open'], $text); 156 $text = str_replace("[/quote:$uid]", $bbcode_tpl['quote_close'], $text); 157 158 // New one liner to deal with opening quotes with usernames... 159 // replaces the two line version that I had here before.. 160 $text = preg_replace("/\[quote:$uid=\"(.*?)\"\]/si", $bbcode_tpl['quote_username_open'], $text); 161 162 // [list] and [list=x] for (un)ordered lists. 163 // unordered lists 164 $text = str_replace("[list:$uid]", $bbcode_tpl['ulist_open'], $text); 165 // li tags 166 $text = str_replace("[*:$uid]", $bbcode_tpl['listitem'], $text); 167 // ending tags 168 $text = str_replace("[/list:u:$uid]", $bbcode_tpl['ulist_close'], $text); 169 $text = str_replace("[/list:o:$uid]", $bbcode_tpl['olist_close'], $text); 170 // Ordered lists 171 $text = preg_replace("/\[list=([a1]):$uid\]/si", $bbcode_tpl['olist_open'], $text); 172 173 // colours 174 $text = preg_replace("/\[color=(\#[0-9A-F]{6}|[a-z]+):$uid\]/si", $bbcode_tpl['color_open'], $text); 175 $text = str_replace("[/color:$uid]", $bbcode_tpl['color_close'], $text); 176 177 // size 178 $text = preg_replace("/\[size=([1-2]?[0-9]):$uid\]/si", $bbcode_tpl['size_open'], $text); 179 $text = str_replace("[/size:$uid]", $bbcode_tpl['size_close'], $text); 180 181 // [b] and [/b] for bolding text. 182 $text = str_replace("[b:$uid]", $bbcode_tpl['b_open'], $text); 183 $text = str_replace("[/b:$uid]", $bbcode_tpl['b_close'], $text); 184 185 // [u] and [/u] for underlining text. 186 $text = str_replace("[u:$uid]", $bbcode_tpl['u_open'], $text); 187 $text = str_replace("[/u:$uid]", $bbcode_tpl['u_close'], $text); 188 189 // [i] and [/i] for italicizing text. 190 $text = str_replace("[i:$uid]", $bbcode_tpl['i_open'], $text); 191 $text = str_replace("[/i:$uid]", $bbcode_tpl['i_close'], $text); 192 193 // Patterns and replacements for URL and email tags.. 194 $patterns = array(); 195 $replacements = array(); 196 197 // [img]image_url_here[/img] code.. 198 // This one gets first-passed.. 199 $patterns[] = "#\[img:$uid\]([^?](?:[^\[]+|\[(?!url))*?)\[/img:$uid\]#i"; 200 $replacements[] = $bbcode_tpl['img']; 201 202 // matches a [url]xxxx://www.phpbb.com[/url] code.. 203 $patterns[] = "#\[url\]([\w]+?://([\w\#$%&~/.\-;:=,?@\]+]+|\[(?!url=))*?)\[/url\]#is"; 204 $replacements[] = $bbcode_tpl['url1']; 205 206 // [url]www.phpbb.com[/url] code.. (no xxxx:// prefix). 207 $patterns[] = "#\[url\]((www|ftp)\.([\w\#$%&~/.\-;:=,?@\]+]+|\[(?!url=))*?)\[/url\]#is"; 208 $replacements[] = $bbcode_tpl['url2']; 209 210 // [url=xxxx://www.phpbb.com]phpBB[/url] code.. 211 $patterns[] = "#\[url=([\w]+?://[\w\#$%&~/.\-;:=,?@\[\]+]*?)\]([^?\n\r\t].*?)\[/url\]#is"; 212 $replacements[] = $bbcode_tpl['url3']; 213 214 // [url=www.phpbb.com]phpBB[/url] code.. (no xxxx:// prefix). 215 $patterns[] = "#\[url=((www|ftp)\.[\w\#$%&~/.\-;:=,?@\[\]+]*?)\]([^?\n\r\t].*?)\[/url\]#is"; 216 $replacements[] = $bbcode_tpl['url4']; 217 218 // [email]user@domain.tld[/email] code.. 219 $patterns[] = "#\[email\]([a-z0-9&\-_.]+?@[\w\-]+\.([\w\-\.]+\.)?[\w]+)\[/email\]#si"; 220 $replacements[] = $bbcode_tpl['email']; 221 222 $text = preg_replace($patterns, $replacements, $text); 223 224 // Remove our padding from the string.. 225 $text = substr($text, 1); 226 227 return $text; 228 229 } // bbencode_second_pass() 230 231 // Need to initialize the random numbers only ONCE 232 mt_srand( (double) microtime() * 1000000); 233 234 function make_bbcode_uid() 235 { 236 // Unique ID for this message.. 237 238 $uid = dss_rand(); 239 $uid = substr($uid, 0, BBCODE_UID_LEN); 240 241 return $uid; 242 } 243 244 function bbencode_first_pass($text, $uid) 245 { 246 // pad it with a space so we can distinguish between FALSE and matching the 1st char (index 0). 247 // This is important; bbencode_quote(), bbencode_list(), and bbencode_code() all depend on it. 248 $text = " " . $text; 249 250 // [CODE] and [/CODE] for posting code (HTML, PHP, C etc etc) in your posts. 251 $text = bbencode_first_pass_pda($text, $uid, '[code]', '[/code]', '', true, ''); 252 253 // [QUOTE] and [/QUOTE] for posting replies with quote, or just for quoting stuff. 254 $text = bbencode_first_pass_pda($text, $uid, '[quote]', '[/quote]', '', false, ''); 255 $text = bbencode_first_pass_pda($text, $uid, '/\[quote=\\\\"(.*?)\\\\"\]/is', '[/quote]', '', false, '', "[quote:$uid=\\\"\\1\\\"]"); 256 257 // [list] and [list=x] for (un)ordered lists. 258 $open_tag = array(); 259 $open_tag[0] = "[list]"; 260 261 // unordered.. 262 $text = bbencode_first_pass_pda($text, $uid, $open_tag, "[/list]", "[/list:u]", false, 'replace_listitems'); 263 264 $open_tag[0] = "[list=1]"; 265 $open_tag[1] = "[list=a]"; 266 267 // ordered. 268 $text = bbencode_first_pass_pda($text, $uid, $open_tag, "[/list]", "[/list:o]", false, 'replace_listitems'); 269 270 // [color] and [/color] for setting text color 271 $text = preg_replace("#\[color=(\#[0-9A-F]{6}|[a-z\-]+)\](.*?)\[/color\]#si", "[color=\\1:$uid]\\2[/color:$uid]", $text); 272 273 // [size] and [/size] for setting text size 274 $text = preg_replace("#\[size=([1-2]?[0-9])\](.*?)\[/size\]#si", "[size=\\1:$uid]\\2[/size:$uid]", $text); 275 276 // [b] and [/b] for bolding text. 277 $text = preg_replace("#\[b\](.*?)\[/b\]#si", "[b:$uid]\\1[/b:$uid]", $text); 278 279 // [u] and [/u] for underlining text. 280 $text = preg_replace("#\[u\](.*?)\[/u\]#si", "[u:$uid]\\1[/u:$uid]", $text); 281 282 // [i] and [/i] for italicizing text. 283 $text = preg_replace("#\[i\](.*?)\[/i\]#si", "[i:$uid]\\1[/i:$uid]", $text); 284 285 // [img]image_url_here[/img] code.. 286 $text = preg_replace("#\[img\]((http|ftp|https|ftps)://)([^ \?&=\#\"\n\r\t<]*?(\.(jpg|jpeg|gif|png)))\[/img\]#sie", "'[img:$uid]\\1' . str_replace(' ', '%20', '\\3') . '[/img:$uid]'", $text); 287 288 // Remove our padding from the string.. 289 return substr($text, 1);; 290 291 } // bbencode_first_pass() 292 293 /** 294 * $text - The text to operate on. 295 * $uid - The UID to add to matching tags. 296 * $open_tag - The opening tag to match. Can be an array of opening tags. 297 * $close_tag - The closing tag to match. 298 * $close_tag_new - The closing tag to replace with. 299 * $mark_lowest_level - boolean - should we specially mark the tags that occur 300 * at the lowest level of nesting? (useful for [code], because 301 * we need to match these tags first and transform HTML tags 302 * in their contents.. 303 * $func - This variable should contain a string that is the name of a function. 304 * That function will be called when a match is found, and passed 2 305 * parameters: ($text, $uid). The function should return a string. 306 * This is used when some transformation needs to be applied to the 307 * text INSIDE a pair of matching tags. If this variable is FALSE or the 308 * empty string, it will not be executed. 309 * If open_tag is an array, then the pda will try to match pairs consisting of 310 * any element of open_tag followed by close_tag. This allows us to match things 311 * like [list=A]...[/list] and [list=1]...[/list] in one pass of the PDA. 312 * 313 * NOTES: - this function assumes the first character of $text is a space. 314 * - every opening tag and closing tag must be of the [...] format. 315 */ 316 function bbencode_first_pass_pda($text, $uid, $open_tag, $close_tag, $close_tag_new, $mark_lowest_level, $func, $open_regexp_replace = false) 317 { 318 $open_tag_count = 0; 319 320 if (!$close_tag_new || ($close_tag_new == '')) 321 { 322 $close_tag_new = $close_tag; 323 } 324 325 $close_tag_length = strlen($close_tag); 326 $close_tag_new_length = strlen($close_tag_new); 327 $uid_length = strlen($uid); 328 329 $use_function_pointer = ($func && ($func != '')); 330 331 $stack = array(); 332 333 if (is_array($open_tag)) 334 { 335 if (0 == count($open_tag)) 336 { 337 // No opening tags to match, so return. 338 return $text; 339 } 340 $open_tag_count = count($open_tag); 341 } 342 else 343 { 344 // only one opening tag. make it into a 1-element array. 345 $open_tag_temp = $open_tag; 346 $open_tag = array(); 347 $open_tag[0] = $open_tag_temp; 348 $open_tag_count = 1; 349 } 350 351 $open_is_regexp = false; 352 353 if ($open_regexp_replace) 354 { 355 $open_is_regexp = true; 356 if (!is_array($open_regexp_replace)) 357 { 358 $open_regexp_temp = $open_regexp_replace; 359 $open_regexp_replace = array(); 360 $open_regexp_replace[0] = $open_regexp_temp; 361 } 362 } 363 364 if ($mark_lowest_level && $open_is_regexp) 365 { 366 message_die(GENERAL_ERROR, "Unsupported operation for bbcode_first_pass_pda()."); 367 } 368 369 // Start at the 2nd char of the string, looking for opening tags. 370 $curr_pos = 1; 371 while ($curr_pos && ($curr_pos < strlen($text))) 372 { 373 $curr_pos = strpos($text, "[", $curr_pos); 374 375 // If not found, $curr_pos will be 0, and the loop will end. 376 if ($curr_pos) 377 { 378 // We found a [. It starts at $curr_pos. 379 // check if it's a starting or ending tag. 380 $found_start = false; 381 $which_start_tag = ""; 382 $start_tag_index = -1; 383 384 for ($i = 0; $i < $open_tag_count; $i++) 385 { 386 // Grab everything until the first "]"... 387 $possible_start = substr($text, $curr_pos, strpos($text, ']', $curr_pos + 1) - $curr_pos + 1); 388 389 // 390 // We're going to try and catch usernames with "[' characters. 391 // 392 if( preg_match('#\[quote=\\\"#si', $possible_start, $match) && !preg_match('#\[quote=\\\"(.*?)\\\"\]#si', $possible_start) ) 393 { 394 // OK we are in a quote tag that probably contains a ] bracket. 395 // Grab a bit more of the string to hopefully get all of it.. 396 if ($close_pos = strpos($text, '"]', $curr_pos + 14)) 397 { 398 if (strpos(substr($text, $curr_pos + 14, $close_pos - ($curr_pos + 14)), '[quote') === false) 399 { 400 $possible_start = substr($text, $curr_pos, $close_pos - $curr_pos + 7); 401 } 402 } 403 } 404 405 // Now compare, either using regexp or not. 406 if ($open_is_regexp) 407 { 408 $match_result = array(); 409 if (preg_match($open_tag[$i], $possible_start, $match_result)) 410 { 411 $found_start = true; 412 $which_start_tag = $match_result[0]; 413 $start_tag_index = $i; 414 break; 415 } 416 } 417 else 418 { 419 // straightforward string comparison. 420 if (0 == strcasecmp($open_tag[$i], $possible_start)) 421 { 422 $found_start = true; 423 $which_start_tag = $open_tag[$i]; 424 $start_tag_index = $i; 425 break; 426 } 427 } 428 } 429 430 if ($found_start) 431 { 432 // We have an opening tag. 433 // Push its position, the text we matched, and its index in the open_tag array on to the stack, and then keep going to the right. 434 $match = array("pos" => $curr_pos, "tag" => $which_start_tag, "index" => $start_tag_index); 435 array_push($stack, $match); 436 // 437 // Rather than just increment $curr_pos 438 // Set it to the ending of the tag we just found 439 // Keeps error in nested tag from breaking out 440 // of table structure.. 441 // 442 $curr_pos += strlen($possible_start); 443 } 444 else 445 { 446 // check for a closing tag.. 447 $possible_end = substr($text, $curr_pos, $close_tag_length); 448 if (0 == strcasecmp($close_tag, $possible_end)) 449 { 450 // We have an ending tag. 451 // Check if we've already found a matching starting tag. 452 if (sizeof($stack) > 0) 453 { 454 // There exists a starting tag. 455 $curr_nesting_depth = sizeof($stack); 456 // We need to do 2 replacements now. 457 $match = array_pop($stack); 458 $start_index = $match['pos']; 459 $start_tag = $match['tag']; 460 $start_length = strlen($start_tag); 461 $start_tag_index = $match['index']; 462 463 if ($open_is_regexp) 464 { 465 $start_tag = preg_replace($open_tag[$start_tag_index], $open_regexp_replace[$start_tag_index], $start_tag); 466 } 467 468 // everything before the opening tag. 469 $before_start_tag = substr($text, 0, $start_index); 470 471 // everything after the opening tag, but before the closing tag. 472 $between_tags = substr($text, $start_index + $start_length, $curr_pos - $start_index - $start_length); 473 474 // Run the given function on the text between the tags.. 475 if ($use_function_pointer) 476 { 477 $between_tags = $func($between_tags, $uid); 478 } 479 480 // everything after the closing tag. 481 $after_end_tag = substr($text, $curr_pos + $close_tag_length); 482 483 // Mark the lowest nesting level if needed. 484 if ($mark_lowest_level && ($curr_nesting_depth == 1)) 485 { 486 if ($open_tag[0] == '[code]') 487 { 488 $code_entities_match = array('#<#', '#>#', '#"#', '#:#', '#\[#', '#\]#', '#\(#', '#\)#', '#\{#', '#\}#'); 489 $code_entities_replace = array('<', '>', '"', ':', '[', ']', '(', ')', '{', '}'); 490 $between_tags = preg_replace($code_entities_match, $code_entities_replace, $between_tags); 491 } 492 $text = $before_start_tag . substr($start_tag, 0, $start_length - 1) . ":$curr_nesting_depth:$uid]"; 493 $text .= $between_tags . substr($close_tag_new, 0, $close_tag_new_length - 1) . ":$curr_nesting_depth:$uid]"; 494 } 495 else 496 { 497 if ($open_tag[0] == '[code]') 498 { 499 $text = $before_start_tag . '[code]'; 500 $text .= $between_tags . '[/code]'; 501 } 502 else 503 { 504 if ($open_is_regexp) 505 { 506 $text = $before_start_tag . $start_tag; 507 } 508 else 509 { 510 $text = $before_start_tag . substr($start_tag, 0, $start_length - 1) . ":$uid]"; 511 } 512 $text .= $between_tags . substr($close_tag_new, 0, $close_tag_new_length - 1) . ":$uid]"; 513 } 514 } 515 516 $text .= $after_end_tag; 517 518 // Now.. we've screwed up the indices by changing the length of the string. 519 // So, if there's anything in the stack, we want to resume searching just after it. 520 // otherwise, we go back to the start. 521 if (sizeof($stack) > 0) 522 { 523 $match = array_pop($stack); 524 $curr_pos = $match['pos']; 525 // bbcode_array_push($stack, $match); 526 // ++$curr_pos; 527 } 528 else 529 { 530 $curr_pos = 1; 531 } 532 } 533 else 534 { 535 // No matching start tag found. Increment pos, keep going. 536 ++$curr_pos; 537 } 538 } 539 else 540 { 541 // No starting tag or ending tag.. Increment pos, keep looping., 542 ++$curr_pos; 543 } 544 } 545 } 546 } // while 547 548 return $text; 549 550 } // bbencode_first_pass_pda() 551 552 /** 553 * Does second-pass bbencoding of the [code] tags. This includes 554 * running htmlspecialchars() over the text contained between 555 * any pair of [code] tags that are at the first level of 556 * nesting. Tags at the first level of nesting are indicated 557 * by this format: [code:1:$uid] ... [/code:1:$uid] 558 * Other tags are in this format: [code:$uid] ... [/code:$uid] 559 */ 560 function bbencode_second_pass_code($text, $uid, $bbcode_tpl) 561 { 562 global $lang; 563 564 $code_start_html = $bbcode_tpl['code_open']; 565 $code_end_html = $bbcode_tpl['code_close']; 566 567 // First, do all the 1st-level matches. These need an htmlspecialchars() run, 568 // so they have to be handled differently. 569 $match_count = preg_match_all("#\[code:1:$uid\](.*?)\[/code:1:$uid\]#si", $text, $matches); 570 571 for ($i = 0; $i < $match_count; $i++) 572 { 573 $before_replace = $matches[1][$i]; 574 $after_replace = $matches[1][$i]; 575 576 // Replace 2 spaces with " " so non-tabbed code indents without making huge long lines. 577 $after_replace = str_replace(" ", " ", $after_replace); 578 // now Replace 2 spaces with " " to catch odd #s of spaces. 579 $after_replace = str_replace(" ", " ", $after_replace); 580 581 // Replace tabs with " " so tabbed code indents sorta right without making huge long lines. 582 $after_replace = str_replace("\t", " ", $after_replace); 583 584 // now Replace space occurring at the beginning of a line 585 $after_replace = preg_replace("/^ {1}/m", ' ', $after_replace); 586 587 $str_to_match = "[code:1:$uid]" . $before_replace . "[/code:1:$uid]"; 588 589 $replacement = $code_start_html; 590 $replacement .= $after_replace; 591 $replacement .= $code_end_html; 592 593 $text = str_replace($str_to_match, $replacement, $text); 594 } 595 596 // Now, do all the non-first-level matches. These are simple. 597 $text = str_replace("[code:$uid]", $code_start_html, $text); 598 $text = str_replace("[/code:$uid]", $code_end_html, $text); 599 600 return $text; 601 602 } // bbencode_second_pass_code() 603 604 /** 605 * Rewritten by Nathan Codding - Feb 6, 2001. 606 * - Goes through the given string, and replaces xxxx://yyyy with an HTML <a> tag linking 607 * to that URL 608 * - Goes through the given string, and replaces www.xxxx.yyyy[zzzz] with an HTML <a> tag linking 609 * to http://www.xxxx.yyyy[/zzzz] 610 * - Goes through the given string, and replaces xxxx@yyyy with an HTML mailto: tag linking 611 * to that email address 612 * - Only matches these 2 patterns either after a space, or at the beginning of a line 613 * 614 * Notes: the email one might get annoying - it's easy to make it more restrictive, though.. maybe 615 * have it require something like xxxx@yyyy.zzzz or such. We'll see. 616 */ 617 function make_clickable($text) 618 { 619 $text = preg_replace('#(script|about|applet|activex|chrome):#is', "\\1:", $text); 620 621 // pad it with a space so we can match things at the start of the 1st line. 622 $ret = ' ' . $text; 623 624 // matches an "xxxx://yyyy" URL at the start of a line, or after a space. 625 // xxxx can only be alpha characters. 626 // yyyy is anything up to the first space, newline, comma, double quote or < 627 $ret = preg_replace("#(^|[\n ])([\w]+?://[\w\#$%&~/.\-;:=,?@\[\]+]*)#is", "\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $ret); 628 629 // matches a "www|ftp.xxxx.yyyy[/zzzz]" kinda lazy URL thing 630 // Must contain at least 2 dots. xxxx contains either alphanum, or "-" 631 // zzzz is optional.. will contain everything up to the first space, newline, 632 // comma, double quote or <. 633 $ret = preg_replace("#(^|[\n ])((www|ftp)\.[\w\#$%&~/.\-;:=,?@\[\]+]*)#is", "\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $ret); 634 635 // matches an email@domain type address at the start of a line, or after a space. 636 // Note: Only the followed chars are valid; alphanums, "-", "_" and or ".". 637 $ret = preg_replace("#(^|[\n ])([a-z0-9&\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)*[\w]+)#i", "\\1<a href=\"mailto:\\2@\\3\">\\2@\\3</a>", $ret); 638 639 // Remove our padding.. 640 $ret = substr($ret, 1); 641 642 return($ret); 643 } 644 645 /** 646 * Nathan Codding - Feb 6, 2001 647 * Reverses the effects of make_clickable(), for use in editpost. 648 * - Does not distinguish between "www.xxxx.yyyy" and "http://aaaa.bbbb" type URLs. 649 * 650 */ 651 function undo_make_clickable($text) 652 { 653 $text = preg_replace("#<!-- BBCode auto-link start --><a href=\"(.*?)\" target=\"_blank\">.*?</a><!-- BBCode auto-link end -->#i", "\\1", $text); 654 $text = preg_replace("#<!-- BBcode auto-mailto start --><a href=\"mailto:(.*?)\">.*?</a><!-- BBCode auto-mailto end -->#i", "\\1", $text); 655 656 return $text; 657 658 } 659 660 /** 661 * Nathan Codding - August 24, 2000. 662 * Takes a string, and does the reverse of the PHP standard function 663 * htmlspecialchars(). 664 */ 665 function undo_htmlspecialchars($input) 666 { 667 $input = preg_replace("/>/i", ">", $input); 668 $input = preg_replace("/</i", "<", $input); 669 $input = preg_replace("/"/i", "\"", $input); 670 $input = preg_replace("/&/i", "&", $input); 671 672 return $input; 673 } 674 675 /** 676 * This is used to change a [*] tag into a [*:$uid] tag as part 677 * of the first-pass bbencoding of [list] tags. It fits the 678 * standard required in order to be passed as a variable 679 * function into bbencode_first_pass_pda(). 680 */ 681 function replace_listitems($text, $uid) 682 { 683 $text = str_replace("[*]", "[*:$uid]", $text); 684 685 return $text; 686 } 687 688 /** 689 * Escapes the "/" character with "\/". This is useful when you need 690 * to stick a runtime string into a PREG regexp that is being delimited 691 * with slashes. 692 */ 693 function escape_slashes($input) 694 { 695 $output = str_replace('/', '\/', $input); 696 return $output; 697 } 698 699 /** 700 * This function does exactly what the PHP4 function array_push() does 701 * however, to keep phpBB compatable with PHP 3 we had to come up with our own 702 * method of doing it. 703 * This function was deprecated in phpBB 2.0.18 704 */ 705 function bbcode_array_push(&$stack, $value) 706 { 707 $stack[] = $value; 708 return(sizeof($stack)); 709 } 710 711 /** 712 * This function does exactly what the PHP4 function array_pop() does 713 * however, to keep phpBB compatable with PHP 3 we had to come up with our own 714 * method of doing it. 715 * This function was deprecated in phpBB 2.0.18 716 */ 717 function bbcode_array_pop(&$stack) 718 { 719 $arrSize = count($stack); 720 $x = 1; 721 722 while(list($key, $val) = each($stack)) 723 { 724 if($x < count($stack)) 725 { 726 $tmpArr[] = $val; 727 } 728 else 729 { 730 $return_val = $val; 731 } 732 $x++; 733 } 734 $stack = $tmpArr; 735 736 return($return_val); 737 } 738 739 // 740 // Smilies code ... would this be better tagged on to the end of bbcode.php? 741 // Probably so and I'll move it before B2 742 // 743 function smilies_pass($message) 744 { 745 static $orig, $repl; 746 747 if (!isset($orig)) 748 { 749 global $db, $board_config; 750 $orig = $repl = array(); 751 752 $sql = 'SELECT * FROM ' . SMILIES_TABLE; 753 if( !$result = $db->sql_query($sql) ) 754 { 755 message_die(GENERAL_ERROR, "Couldn't obtain smilies data", "", __LINE__, __FILE__, $sql); 756 } 757 $smilies = $db->sql_fetchrowset($result); 758 759 if (count($smilies)) 760 { 761 usort($smilies, 'smiley_sort'); 762 } 763 764 for ($i = 0; $i < count($smilies); $i++) 765 { 766 $orig[] = "/(?<=.\W|\W.|^\W)" . preg_quote($smilies[$i]['code'], "/") . "(?=.\W|\W.|\W$)/"; 767 $repl[] = '<img src="'. $board_config['smilies_path'] . '/' . $smilies[$i]['smile_url'] . '" alt="' . $smilies[$i]['emoticon'] . '" border="0" />'; 768 } 769 } 770 771 if (count($orig)) 772 { 773 $message = preg_replace($orig, $repl, ' ' . $message . ' '); 774 $message = substr($message, 1, -1); 775 } 776 777 return $message; 778 } 779 780 function smiley_sort($a, $b) 781 { 782 if ( strlen($a['code']) == strlen($b['code']) ) 783 { 784 return 0; 785 } 786 787 return ( strlen($a['code']) > strlen($b['code']) ) ? -1 : 1; 788 } 789 790 ?>
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| Generated: Mon Jan 14 19:21:40 2013 | Cross-referenced by PHPXref 0.7.1 |