- ', $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 |