system/helpers/text_helper.php ➔ word_wrap()

Complexity

Conditions	12
Paths	128

Size

Total Lines	80
Code Lines	30

Duplication

Lines	31
Ratio	38.75 %

Importance

Changes

0

<?php
	function word_wrap($str, $charlim = 76)
	{
		// Set the character limit
		is_numeric($charlim) OR $charlim = 76;

		// Reduce multiple spaces
		$str = preg_replace('| +|', ' ', $str);

		// Standardize newlines
		if (strpos($str, "\r") !== FALSE)
		{
			$str = str_replace(array("\r\n", "\r"), "\n", $str);
		}

		// If the current word is surrounded by {unwrap} tags we'll
		// strip the entire chunk and replace it with a marker.
		$unwrap = array();
		if (preg_match_all('|\{unwrap\}(.+?)\{/unwrap\}|s', $str, $matches))
		{
			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
			{
				$unwrap[] = $matches[1][$i];
				$str = str_replace($matches[0][$i], '{{unwrapped'.$i.'}}', $str);
			}
		}

		// Use PHP's native function to do the initial wordwrap.
		// We set the cut flag to FALSE so that any individual words that are
		// too long get left alone. In the next step we'll deal with them.
		$str = wordwrap($str, $charlim, "\n", FALSE);

		// Split the string into individual lines of text and cycle through them
		$output = '';
		foreach (explode("\n", $str) as $line)
		{
			// Is the line within the allowed character count?
			// If so we'll join it to the output and continue
			if (mb_strlen($line) <= $charlim)
			{
				$output .= $line."\n";
				continue;
			}

			$temp = '';
			while (mb_strlen($line) > $charlim)
			{
				// If the over-length word is a URL we won't wrap it
				if (preg_match('!\[url.+\]|://|www\.!', $line))
				{
					break;
				}

				// Trim the word down
				$temp .= mb_substr($line, 0, $charlim - 1);
				$line = mb_substr($line, $charlim - 1);
			}

			// If $temp contains data it means we had to split up an over-length
			// word into smaller chunks so we'll add it back to our current line
			if ($temp !== '')
			{
				$output .= $temp."\n".$line."\n";
			}
			else
			{
				$output .= $line."\n";
			}
		}

		// Put our markers back
		if (count($unwrap) > 0)
		{
			foreach ($unwrap as $key => $val)
			{
				$output = str_replace('{{unwrapped'.$key.'}}', $val, $output);
			}
		}

		return $output;
	}
}