How can I change this function to add a line break ?

[jeddiki]

Hi,
I am using a function called htmlwrap() which states that it
does NOT add a "<br>" to the 70 character
line so that it forces a line wrap.

( the script safely wraps long words without destroying
html tags which wordwrap has a tendency of doing! ))

What I want to do is add that line break so that it DOES force a
line wrap - but I am not sure where to insert it in the function

Can anyone suggest which line of the following function to change ?

/* htmlwrap() is a function which wraps HTML by breaking long words and
* preventing them from damaging your layout.  This function will NOT
* insert <br /> tags every "width" characters as in the PHP wordwrap()
* function. 
*/
 
function htmlwrap($str, $width = 70, $break = "\n", $nobreak = "") {
 
  // Split HTML content into an array delimited by < and >
  // The flags save the delimeters and remove empty variables
  $content = preg_split("/([<>])/", $str, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
 
  // Transform protected element lists into arrays
  $nobreak = explode(" ", strtolower($nobreak));
 
  // Variable setup
  $intag = false;
  $innbk = array();
  $drain = "";
 
  // List of characters it is "safe" to insert line-breaks at
  // It is not necessary to add < and > as they are automatically implied
  $lbrks = "/?!%)-}]\\\"':;&";
 
  // Is $str a UTF8 string?
  $utf8 = (preg_match("/^([\x09\x0A\x0D\x20-\x7E]|[\xC2-\xDF][\x80-\xBF]|\xE0[\xA0-\xBF][\x80-\xBF]|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}|\xED[\x80-\x9F][\x80-\xBF]|\xF0[\x90-\xBF][\x80-\xBF]{2}|[\xF1-\xF3][\x80-\xBF]{3}|\xF4[\x80-\x8F][\x80-\xBF]{2})*$/", $str)) ? "u" : "";
 
  while (list(, $value) = each($content)) {
    switch ($value) {
 
      // If a < is encountered, set the "in-tag" flag
      case "<": $intag = true; break;
 
      // If a > is encountered, remove the flag
      case ">": $intag = false; break;
 
      default:
 
        // If we are currently within a tag...
        if ($intag) {
 
          // Create a lowercase copy of this tag's contents
          $lvalue = strtolower($value);
 
          // If the first character is not a / then this is an opening tag
          if ($lvalue{0} != "/") {
 
            // Collect the tag name   
            preg_match("/^(\w*?)(\s|$)/", $lvalue, $t);
 
            // If this is a protected element, activate the associated protection flag
            if (in_array($t[1], $nobreak)) array_unshift($innbk, $t[1]);
 
          // Otherwise this is a closing tag
          } else {
 
            // If this is a closing tag for a protected element, unset the flag
            if (in_array(substr($lvalue, 1), $nobreak)) {
              reset($innbk);
              while (list($key, $tag) = each($innbk)) {
                if (substr($lvalue, 1) == $tag) {
                  unset($innbk[$key]);
                  break;
                }
              }
              $innbk = array_values($innbk);
            }
          }
 
        // Else if we're outside any tags...
        } else if ($value) {
 
          // If unprotected...
          if (!count($innbk)) {
 
            // Use the ACK (006) ASCII symbol to replace all HTML entities temporarily
            $value = str_replace("\x06", "", $value);
            preg_match_all("/&([a-z\d]{2,7}|#\d{2,5});/i", $value, $ents);
            $value = preg_replace("/&([a-z\d]{2,7}|#\d{2,5});/i", "\x06", $value);
 
            // Enter the line-break loop
            do {
              $store = $value;
 
              // Find the first stretch of characters over the $width limit
              if (preg_match("/^(.*?\s)?([^\s]{".$width."})(?!(".preg_quote($break, "/")."|\s))(.*)$/s{$utf8}", $value, $match)) {
 
                if (strlen($match[2])) {
                  // Determine the last "safe line-break" character within this match
                  for ($x = 0, $ledge = 0; $x < strlen($lbrks); $x++) $ledge = max($ledge, strrpos($match[2], $lbrks{$x}));
                  if (!$ledge) $ledge = strlen($match[2]) - 1;
 
                  // Insert the modified string
                  $value = $match[1].substr($match[2], 0, $ledge + 1).$break.substr($match[2], $ledge + 1).$match[4];
                }
              }
 
            // Loop while overlimit strings are still being found
            } while ($store != $value);
 
            // Put captured HTML entities back into the string
            foreach ($ents[0] as $ent) $value = preg_replace("/\x06/", $ent, $value, 1);
          }
        }
    }
 
    // Send the modified segment down the drain
    $drain .= $value;
  }
 
  // Return contents of the drain
  return $drain;
}
 
?>  

[dlite922]

Why not just use wordwrap() ?


Dan

[jeddiki]

From my first post:

( the script safely wraps long words without destroying
html tags which wordwrap has a tendency of doing! ))

Anyone know how to insert this line break ?

[dlite922]

@jeddiki
Ya, but you continue as

What I want to do is add that line break so that it DOES force a
line wrap

So I don't get it...do you want to break HTML or not?

[jeddiki]

This function htmlwrap() does not add a line break - that is what it says in the description - but that is exactly why I want to modify it

I want to have a line break inserted at the end of 70 characters,
unless doing so will break a html tag - it that case, keep going
until outside the tags - then insert the line break.

This function htmlwrap() is very close to what I want because it carefully
leaves the hyperlinks ( and any other html tags ) intact - it won't touch them.

Wordwrap() on the other hand can not do this - it wrecks my hyperlinks.

So what I want to do is modify this htmlwrap so that it DOES put the
line break in and force a wrap without damaging my hyperlinks.

Can you see a way to modify this function ?
Thanks

[dlite922]

Well right in the definition it gives you away to put your own type of break in instead of the default "\n"

What happens if you call the function with the third param as "<br/>" ?




Dan

[jeddiki]

Well Dan

That is a good idea,
and to be honest, I would have been petty embarrassed
if it had worked ;-)

Although, of course I wanted it to because I want to close the problem.

Unfortunately, it did not make any difference. :(

[jeddiki]

Hi all,

Last week I emailed the programmer who wrote this script
to see if he could help me put a line break into it
and force the wrap.

Unfortunately he has not replied, so I am still looking for a solution :(

It is not a very long script, but it is a bit too complicated for me.

Has anyone noticed how I can get my forced wrap ?

Thanks.