- ', $text);
+
+ // [QUOTE] and [/QUOTE] for posting replies with quote, or just for quoting stuff.
+ $text = str_replace("[quote:$uid]", '
- inside the list.
+ $between_tags = str_replace('[*]', "[*:$uid]", $between_tags);
+
+ // everything after the [/list] tag.
+ $after_end_tag = substr($text, $curr_pos + 7);
+
+ if ($is_ordered)
+ {
+ $text = $before_start_tag . '[list=' . $start_char . ':' . $uid . ']';
+ $text .= $between_tags . '[/list:o:' . $uid . ']';
+ }
+ else
+ {
+ $text = $before_start_tag . '[list:' . $uid . ']';
+ $text .= $between_tags . '[/list:u:' . $uid . ']';
+ }
+
+ $text .= $after_end_tag;
+
+ // Now.. we've screwed up the indices by changing the length of the string.
+ // So, if there's anything in the stack, we want to resume searching just after it.
+ // otherwise, we go back to the start.
+ if (sizeof($stack) > 0)
+ {
+ $a = bbcode_array_pop($stack);
+ $curr_pos = $a[0];
+ bbcode_array_push($stack, $a);
+ ++$curr_pos;
+ }
+ else
+ {
+ $curr_pos = 1;
+ }
+ }
+ else
+ {
+ // No matching start tag found. Increment pos, keep going.
+ ++$curr_pos;
+ }
+ }
+ else
+ {
+ // No starting tag or ending tag.. Increment pos, keep looping.,
+ ++$curr_pos;
+ }
+ }
+ } // while
+
+ return TRUE;
+
+} // bbencode_first_pass_list()
+
+
+
+
+// END new 2-pass functions.
+
+
+
+
+/**
+ * bbdecode/bbencode functions:
+ * Rewritten - Nathan Codding - Aug 24, 2000
+ * quote, code, and list rewritten again in Jan. 2001.
+ * All BBCode tags now implemented. Nesting and multiple occurances should be
+ * handled fine for all of them. Using str_replace() instead of regexps often
+ * for efficiency. quote, list, and code are not regular, so they are
+ * implemented as PDAs - probably not all that efficient, but that's the way it is.
+ *
+ * Note: all BBCode tags are case-insensitive.
+ */
+function bbdecode($message) {
+
+ // Undo [code]
+ $code_start_html = "
"; + $message = str_replace($code_start_html, "[code]", $message); + $message = str_replace($code_end_html, "[/code]", $message); + + // Undo [quote] + $quote_start_html = "Code: "; + $code_end_html = "
"; + $message = str_replace($quote_start_html, "[quote]", $message); + $message = str_replace($quote_end_html, "[/quote]", $message); + + // Undo [b] and [i] + $message = preg_replace("#(.*?)#s", "[b]\\1[/b]", $message); + $message = preg_replace("#(.*?)#s", "[i]\\1[/i]", $message); + + // Undo [url] (both forms) + $message = preg_replace("#(.*?)#s", "[url=\\1\\2]\\3[/url]", $message); + + // Undo [email] + $message = preg_replace("#(.*?)#s", "[email]\\1[/email]", $message); + + // Undo [img] + $message = preg_replace("#Quote: "; + $quote_end_html = "
#s", "[img]\\1[/img]", $message); + + // Undo lists (unordered/ordered) + + //
- tags: + $message = str_replace("
- ", "[*]", $message);
+
+ // [list] tags:
+ $message = str_replace("
- ", "[list]", $message);
+
+ // [list=x] tags:
+ $message = preg_replace("#
- #si", "[list=\\1]", $message);
+
+ // [/list] tags:
+ $message = str_replace("
| Quote: |
', $text); + $text = str_replace("[/quote:$uid]", ' |
"; + + // pad it with a space so we can distinguish between FALSE and matching the 1st char (index 0). + // This is important; bbencode_quote(), bbencode_list(), and bbencode_code() all depend on it. + $text = " " . $text; + + // [CODE] and [/CODE] for posting code (HTML, PHP, C etc etc) in your posts. + $max_code_nesting = bbencode_first_pass_code($text, $uid); + + // [QUOTE] and [/QUOTE] for posting replies with quote, or just for quoting stuff. + bbencode_first_pass_quote($text, $uid); + + // [list] and [list=x] for (un)ordered lists. + bbencode_first_pass_list($text, $uid); + + // [b] and [/b] for bolding text. + $text = preg_replace("#\[b\](.*?)\[/b\]#si", "[b:$uid]\\1[/b:$uid]", $text); + + // [i] and [/i] for italicizing text. + $text = preg_replace("#\[i\](.*?)\[/i\]#si", "[i:$uid]\\1[/i:$uid]", $text); + + // [img]image_url_here[/img] code.. + $text = preg_replace("#\[img\](.*?)\[/img\]#si", "[img:$uid]\\1[/img:$uid]", $text); + + // Remove our padding from the string.. + $text = substr($text, 1); + + // Add the uid tag to the start of the string.. + $text = '[uid=' . $uid . ':' . $max_code_nesting . ']' . $text; + + return $text; + +} // bbencode_first_pass() + + +/** + * Nathan Codding - Feb. 14, 2001. + * Performs [quote][/quote] bbencoding on the given string. + * Any unmatched "[quote]" or "[/quote]" token will just be left alone. + * This works fine with both having more than one quote in a message, and with nested quotes. + * Since that is not a regular language, this is actually a PDA and uses a stack. Great fun. + * + * Note: This function assumes the first character of $text is a space, which is added by + * bbencode(). + */ +function bbencode_first_pass_quote(&$text, $uid) +{ + // First things first: If there aren't any "[quote]" strings in the message, we don't + // need to process it at all. + + if (!strpos(strtolower($text), "[quote]")) + { + return TRUE; + } + + $stack = Array(); + $curr_pos = 1; + while ($curr_pos && ($curr_pos < strlen($text))) + { + $curr_pos = strpos($text, "[", $curr_pos); + + // If not found, $curr_pos will be 0, and the loop will end. + if ($curr_pos) + { + // We found a [. It starts at $curr_pos. + // check if it's a starting or ending quote tag. + $possible_start = substr($text, $curr_pos, 7); + $possible_end = substr($text, $curr_pos, 8); + if (strcasecmp("[quote]", $possible_start) == 0) + { + // We have a starting quote tag. + // Push its position on to the stack, and then keep going to the right. + bbcode_array_push($stack, $curr_pos); + ++$curr_pos; + } + else if (strcasecmp("[/quote]", $possible_end) == 0) + { + // We have an ending quote tag. + // Check if we've already found a matching starting tag. + if (sizeof($stack) > 0) + { + // There exists a starting tag. + // We need to do 2 replacements now. + $start_index = bbcode_array_pop($stack); + + // everything before the [quote] tag. + $before_start_tag = substr($text, 0, $start_index); + + // everything after the [quote] tag, but before the [/quote] tag. + $between_tags = substr($text, $start_index + 7, $curr_pos - $start_index - 7); + + // everything after the [/quote] tag. + $after_end_tag = substr($text, $curr_pos + 8); + + $text = $before_start_tag . "[quote:$uid]"; + $text .= $between_tags . "[/quote:$uid]"; + $text .= $after_end_tag; + + // Now.. we've screwed up the indices by changing the length of the string. + // So, if there's anything in the stack, we want to resume searching just after it. + // otherwise, we go back to the start. + if (sizeof($stack) > 0) + { + $curr_pos = array_pop($stack); + bbcode_array_push($stack, $curr_pos); + ++$curr_pos; + } + else + { + $curr_pos = 1; + } + } + else + { + // No matching start tag found. Increment pos, keep going. + ++$curr_pos; + } + } + else + { + // No starting tag or ending tag.. Increment pos, keep looping., + ++$curr_pos; + } + } + } // while + + return TRUE; + +} // bbencode_first_pass_quote() + + +/** + * Nathan Codding - Feb. 14, 2001. + * Performs [code][/code] bbencoding on the given string. + * Any unmatched "[code]" or "[/code]" token will just be left alone. + * This works fine with both having more than one code block in a message, and with nested code blocks. + * Since that is not a regular language, this is actually a PDA and uses a stack. Great fun. + * + * Note: This function assumes the first character of $message is a space, which is added by + * bbencode(). + */ +function bbencode_first_pass_code(&$text, $uid) +{ + // First things first: If there aren't any "[code]" strings in the message, we don't + // need to process it at all. + if (!strpos(strtolower($text), "[code]")) + { + return 0; + } + + // Second things second: we have to watch out for stuff like [1code] or [/code1] in the + // input.. So escape them to [#1code] or [/code#1] for now: + $temp_uid = md5(uniqid(rand())); + + $text = preg_replace("#\[([0-9]+?)code\]#si", "[$temp_uid:\\1code]", $text); + $text = preg_replace("#\[/code([0-9]+?)\]#si", "[/code$temp_uid:\\1]", $text); + + $stack = Array(); + $curr_pos = 1; + $max_nesting_depth = 0; + while ($curr_pos && ($curr_pos < strlen($text))) + { + $curr_pos = strpos($text, "[", $curr_pos); + + // If not found, $curr_pos will be 0, and the loop will end. + if ($curr_pos) + { + // We found a [. It starts at $curr_pos. + // check if it's a starting or ending code tag. + $possible_start = substr($text, $curr_pos, 6); + $possible_end = substr($text, $curr_pos, 7); + if (strcasecmp("[code]", $possible_start) == 0) + { + // We have a starting code tag. + // Push its position on to the stack, and then keep going to the right. + bbcode_array_push($stack, $curr_pos); + ++$curr_pos; + } + else if (strcasecmp("[/code]", $possible_end) == 0) + { + // We have an ending code tag. + // Check if we've already found a matching starting tag. + if (sizeof($stack) > 0) + { + // There exists a starting tag. + $curr_nesting_depth = sizeof($stack); + $max_nesting_depth = ($curr_nesting_depth > $max_nesting_depth) ? $curr_nesting_depth : $max_nesting_depth; + + // We need to do 2 replacements now. + $start_index = bbcode_array_pop($stack); + + // everything before the [code] tag. + $before_start_tag = substr($text, 0, $start_index); + + // everything after the [code] tag, but before the [/code] tag. + $between_tags = substr($text, $start_index + 6, $curr_pos - $start_index - 6); + + // everything after the [/code] tag. + $after_end_tag = substr($text, $curr_pos + 7); + + $text = $before_start_tag . '[code:' . $curr_nesting_depth . ':' . $uid . ']'; + $text .= $between_tags . '[/code:' . $curr_nesting_depth . ':' . $uid . ']'; + $text .= $after_end_tag; + + // Now.. we've screwed up the indices by changing the length of the string. + // So, if there's anything in the stack, we want to resume searching just after it. + // otherwise, we go back to the start. + if (sizeof($stack) > 0) + { + $curr_pos = bbcode_array_pop($stack); + bbcode_array_push($stack, $curr_pos); + ++$curr_pos; + } + else + { + $curr_pos = 1; + } + } + else + { + // No matching start tag found. Increment pos, keep going. + ++$curr_pos; + } + } + else + { + // No starting tag or ending tag.. Increment pos, keep looping., + ++$curr_pos; + } + } + } // while + + // Undo our escaping from "second things second" above.. + $text = preg_replace("#\[$temp_uid:([0-9]+?)code\]#si", "[\\1code]", $text); + $text = preg_replace("#\[/code$temp_uid:([0-9]+?)\]#si", "[/code\\1]", $text); + + return $max_nesting_depth; + +} // bbencode_first_pass_code() + + + +function bbencode_second_pass_code(&$text, $uid, $max_nesting_depth) +{ + for ($i = 1; $i <= $max_nesting_depth; ++$i) + { + $match_count = preg_match_all("#\[code:$i:$uid\](.*?)\[/code:$i:$uid\]#si", $text, $matches); + + for ($j = 0; $j < $match_count; $j++) + { + $before_replace = $matches[1][$j]; + $after_replace = $matches[1][$j]; + + if ($i < 2) + { + // don't escape special chars when we're nested, 'cause it was already done + // at the lower level.. + $after_replace = htmlspecialchars($after_replace); + } + + $str_to_match = "[code:$i:$uid]" . $before_replace . "[/code:$i:$uid]"; + + $replacement = '
| Code: |
'; + $replacement .= $after_replace; + $replacement .= ' |
| Quote: |
"; + $message .= $between_tags . " |
| Code: |
$after_replace |