/**
* Combines sources and minifies the result.
*
* @return string
*/
protected static function _combineMinify()
{
$type = self::$_options['contentType'];
// ease readability
// when combining scripts, make sure all statements separated and
// trailing single line comment is terminated
$implodeSeparator = $type === self::TYPE_JS ? "\n;" : '';
// allow the user to pass a particular array of options to each
// minifier (designated by type). source objects may still override
// these
$defaultOptions = isset(self::$_options['minifierOptions'][$type]) ? self::$_options['minifierOptions'][$type] : array();
// if minifier not set, default is no minification. source objects
// may still override this
$defaultMinifier = isset(self::$_options['minifiers'][$type]) ? self::$_options['minifiers'][$type] : false;
if (Diglin_Minify_Source::haveNoMinifyPrefs(self::$_controller->sources)) {
// all source have same options/minifier, better performance
// to combine, then minify once
foreach (self::$_controller->sources as $source) {
$pieces[] = $source->getContent();
}
$content = implode($implodeSeparator, $pieces);
if ($defaultMinifier) {
self::$_controller->loadMinifier($defaultMinifier);
$content = call_user_func($defaultMinifier, $content, $defaultOptions);
}
} else {
// minify each source with its own options and minifier, then combine
foreach (self::$_controller->sources as $source) {
// allow the source to override our minifier and options
$minifier = null !== $source->minifier ? $source->minifier : $defaultMinifier;
$options = null !== $source->minifyOptions ? array_merge($defaultOptions, $source->minifyOptions) : $defaultOptions;
if ($minifier) {
self::$_controller->loadMinifier($minifier);
// get source content and minify it
$pieces[] = call_user_func($minifier, $source->getContent(), $options);
} else {
$pieces[] = $source->getContent();
}
}
$content = implode($implodeSeparator, $pieces);
}
if ($type === self::TYPE_CSS && false !== strpos($content, '@import')) {
$content = self::_handleCssImports($content);
}
// do any post-processing (esp. for editing build URIs)
if (self::$_options['postprocessorRequire']) {
#require_once self::$_options['postprocessorRequire'];
}
if (self::$_options['postprocessor']) {
$content = call_user_func(self::$_options['postprocessor'], $content, $type);
}
return $content;
}
