diff options
Diffstat (limited to 'include/smarty/libs/plugins/outputfilter.trimwhitespace.php')
| -rw-r--r-- | include/smarty/libs/plugins/outputfilter.trimwhitespace.php | 127 |
1 files changed, 73 insertions, 54 deletions
diff --git a/include/smarty/libs/plugins/outputfilter.trimwhitespace.php b/include/smarty/libs/plugins/outputfilter.trimwhitespace.php index 739fa39b0..87cf8c781 100644 --- a/include/smarty/libs/plugins/outputfilter.trimwhitespace.php +++ b/include/smarty/libs/plugins/outputfilter.trimwhitespace.php @@ -1,75 +1,94 @@ <?php /** * Smarty plugin + * * @package Smarty - * @subpackage plugins + * @subpackage PluginsFilter */ /** * Smarty trimwhitespace outputfilter plugin * - * File: outputfilter.trimwhitespace.php<br> - * Type: outputfilter<br> - * Name: trimwhitespace<br> - * Date: Jan 25, 2003<br> - * Purpose: trim leading white space and blank lines from - * template source after it gets interpreted, cleaning - * up code and saving bandwidth. Does not affect - * <<PRE>></PRE> and <SCRIPT></SCRIPT> blocks.<br> - * Install: Drop into the plugin directory, call - * <code>$smarty->load_filter('output','trimwhitespace');</code> - * from application. - * @author Monte Ohrt <monte at ohrt dot com> - * @author Contributions from Lars Noschinski <lars@usenet.noschinski.de> - * @version 1.3 - * @param string - * @param Smarty + * Trim unnecessary whitespace from HTML markup. + * + * @author Rodney Rehm + * @param string $source input string + * @param Smarty_Internal_Template $smarty Smarty object + * @return string filtered output + * @todo substr_replace() is not overloaded by mbstring.func_overload - so this function might fail! */ -function smarty_outputfilter_trimwhitespace($source, &$smarty) +function smarty_outputfilter_trimwhitespace($source, Smarty_Internal_Template $smarty) { - // Pull out the script blocks - preg_match_all("!<script[^>]*?>.*?</script>!is", $source, $match); - $_script_blocks = $match[0]; - $source = preg_replace("!<script[^>]*?>.*?</script>!is", - '@@@SMARTY:TRIM:SCRIPT@@@', $source); + $store = array(); + $_store = 0; + $_offset = 0; - // Pull out the pre blocks - preg_match_all("!<pre[^>]*?>.*?</pre>!is", $source, $match); - $_pre_blocks = $match[0]; - $source = preg_replace("!<pre[^>]*?>.*?</pre>!is", - '@@@SMARTY:TRIM:PRE@@@', $source); - - // Pull out the textarea blocks - preg_match_all("!<textarea[^>]*?>.*?</textarea>!is", $source, $match); - $_textarea_blocks = $match[0]; - $source = preg_replace("!<textarea[^>]*?>.*?</textarea>!is", - '@@@SMARTY:TRIM:TEXTAREA@@@', $source); + // Unify Line-Breaks to \n + $source = preg_replace("/\015\012|\015|\012/", "\n", $source); - // remove all leading spaces, tabs and carriage returns NOT - // preceeded by a php close tag. - $source = trim(preg_replace('/((?<!\?>)\n)[\s]+/m', '\1', $source)); + // capture Internet Explorer Conditional Comments + if (preg_match_all('#<!--\[[^\]]+\]>.*?<!\[[^\]]+\]-->#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) { + foreach ($matches as $match) { + $store[] = $match[0][0]; + $_length = strlen($match[0][0]); + $replace = '@!@SMARTY:' . $_store . ':SMARTY@!@'; + $source = substr_replace($source, $replace, $match[0][1] - $_offset, $_length); - // replace textarea blocks - smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:TEXTAREA@@@",$_textarea_blocks, $source); + $_offset += $_length - strlen($replace); + $_store++; + } + } - // replace pre blocks - smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:PRE@@@",$_pre_blocks, $source); + // Strip all HTML-Comments + // yes, even the ones in <script> - see http://stackoverflow.com/a/808850/515124 + $source = preg_replace( '#<!--.*?-->#ms', '', $source ); - // replace script blocks - smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:SCRIPT@@@",$_script_blocks, $source); + // capture html elements not to be messed with + $_offset = 0; + if (preg_match_all('#<(script|pre|textarea)[^>]*>.*?</\\1>#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) { + foreach ($matches as $match) { + $store[] = $match[0][0]; + $_length = strlen($match[0][0]); + $replace = '@!@SMARTY:' . $_store . ':SMARTY@!@'; + $source = substr_replace($source, $replace, $match[0][1] - $_offset, $_length); - return $source; -} + $_offset += $_length - strlen($replace); + $_store++; + } + } -function smarty_outputfilter_trimwhitespace_replace($search_str, $replace, &$subject) { - $_len = strlen($search_str); - $_pos = 0; - for ($_i=0, $_count=count($replace); $_i<$_count; $_i++) - if (($_pos=strpos($subject, $search_str, $_pos))!==false) - $subject = substr_replace($subject, $replace[$_i], $_pos, $_len); - else - break; + $expressions = array( + // replace multiple spaces between tags by a single space + // can't remove them entirely, becaue that might break poorly implemented CSS display:inline-block elements + '#(:SMARTY@!@|>)\s+(?=@!@SMARTY:|<)#s' => '\1 \2', + // remove spaces between attributes (but not in attribute values!) + '#(([a-z0-9]\s*=\s*(["\'])[^\3]*?\3)|<[a-z0-9_]+)\s+([a-z/>])#is' => '\1 \4', + // note: for some very weird reason trim() seems to remove spaces inside attributes. + // maybe a \0 byte or something is interfering? + '#^\s+<#Ss' => '<', + '#>\s+$#Ss' => '>', + ); + $source = preg_replace( array_keys($expressions), array_values($expressions), $source ); + // note: for some very weird reason trim() seems to remove spaces inside attributes. + // maybe a \0 byte or something is interfering? + // $source = trim( $source ); + + // capture html elements not to be messed with + $_offset = 0; + if (preg_match_all('#@!@SMARTY:([0-9]+):SMARTY@!@#is', $source, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) { + foreach ($matches as $match) { + $store[] = $match[0][0]; + $_length = strlen($match[0][0]); + $replace = array_shift($store); + $source = substr_replace($source, $replace, $match[0][1] + $_offset, $_length); + + $_offset += strlen($replace) - $_length; + $_store++; + } + } + + return $source; } -?> +?>
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