Compressing CSS YUI compressor - css

Question

Anyone know which option is needed to compress all css in one line. I am using a wordpress plugin called bwp-minify, however the plugin's css level of compression is low and i am trying to change it through the YUICompressor.php
I tried changing line-break to 0 and to 100000 but none have effect.
Is it the following;
--line-break
Some source control tools don't like files containing lines longer than,
say 8000 characters. The linebreak option is used in that case to split
long lines after a specific column. It can also be used to make the code
more readable, easier to debug (especially with the MS Script Debugger)
Specify 0 to get a line break after each semi-colon in JavaScript, and
after each rule in CSS.
Source Code:
<?php
/**
* Class Minify_YUICompressor
* #package Minify
*/
/**
* Compress Javascript/CSS using the YUI Compressor
*
* You must set $jarFile and $tempDir before calling the minify functions.
* Also, depending on your shell's environment, you may need to specify
* the full path to java in $javaExecutable or use putenv() to setup the
* Java environment.
*
* <code>
* Minify_YUICompressor::$jarFile = '/path/to/yuicompressor-2.3.5.jar';
* Minify_YUICompressor::$tempDir = '/tmp';
* $code = Minify_YUICompressor::minifyJs(
* $code
* ,array('nomunge' => true, 'line-break' => 1000)
* );
* </code>
*
* #todo unit tests, $options docs
*
* #package Minify
* #author Stephen Clay <steve#mrclay.org>
*/
class Minify_YUICompressor {
/**
* Filepath of the YUI Compressor jar file. This must be set before
* calling minifyJs() or minifyCss().
*
* #var string
*/
public static $jarFile = null;
/**
* Writable temp directory. This must be set before calling minifyJs()
* or minifyCss().
*
* #var string
*/
public static $tempDir = null;
/**
* Filepath of "java" executable (may be needed if not in shell's PATH)
*
* #var string
*/
public static $javaExecutable = 'java';
/**
* Minify a Javascript string
*
* #param string $js
*
* #param array $options (verbose is ignored)
*
* #see http://www.julienlecomte.net/yuicompressor/README
*
* #return string
*/
public static function minifyJs($js, $options = array())
{
return self::_minify('js', $js, $options);
}
/**
* Minify a CSS string
*
* #param string $css
*
* #param array $options (verbose is ignored)
*
* #see http://www.julienlecomte.net/yuicompressor/README
*
* #return string
*/
public static function minifyCss($css, $options = array())
{
return self::_minify('css', $css, $options);
}
private static function _minify($type, $content, $options)
{
self::_prepare();
if (! ($tmpFile = tempnam(self::$tempDir, 'yuic_'))) {
throw new Exception('Minify_YUICompressor : could not create temp file.');
}
file_put_contents($tmpFile, $content);
exec(self::_getCmd($options, $type, $tmpFile), $output);
unlink($tmpFile);
return implode("\n", $output);
}
private static function _getCmd($userOptions, $type, $tmpFile)
{
$o = array_merge(
array(
'charset' => ''
,'line-break' => 5000
,'type' => $type
,'nomunge' => false
,'preserve-semi' => false
,'disable-optimizations' => false
)
,$userOptions
);
$cmd = self::$javaExecutable . ' -jar ' . escapeshellarg(self::$jarFile)
. " --type {$type}"
. (preg_match('/^[a-zA-Z0-9\\-]+$/', $o['charset'])
? " --charset {$o['charset']}"
: '')
. (is_numeric($o['line-break']) && $o['line-break'] >= 0
? ' --line-break ' . (int)$o['line-break']
: '');
if ($type === 'js') {
foreach (array('nomunge', 'preserve-semi', 'disable-optimizations') as $opt) {
$cmd .= $o[$opt]
? " --{$opt}"
: '';
}
}
return $cmd . ' ' . escapeshellarg($tmpFile);
}
private static function _prepare()
{
if (! is_file(self::$jarFile)) {
throw new Exception('Minify_YUICompressor : $jarFile('.self::$jarFile.') is not a valid file.');
}
if (! is_dir(self::$tempDir)) {
throw new Exception('Minify_YUICompressor : $tempDir('.self::$tempDir.') is not a valid direcotry.');
}
if (! is_writable(self::$tempDir)) {
throw new Exception('Minify_YUICompressor : $tempDir('.self::$tempDir.') is not writable.');
}
}
}

Answer 1

Have you tried not using the --line-break option?
When I use YUI compressor I don't specify that option and the output is on a single line.
Judging from the source code you provided wherever you call
Minify_YUICompressor::minifyCss('/path/to.css');
You need to set the line-break option to -1 like this:
Minify_YUICompressor::minifyCss('/path/to.css', array('line-break' => -1));

Answer 2

put the following code at the beginning of you php script
<?php header('Content-Type:application/javascript'); ?>