/**
* Minify a CSS string
*
* @param string $css
*
* @param array $options available options:
*
* 'preserveComments': (default true) multi-line comments that begin
* with "/*!" will be preserved with newlines before and after to
* enhance readability.
*
* 'prependRelativePath': (default null) if given, this string will be
* prepended to all relative URIs in import/url declarations
*
* 'currentDir': (default null) if given, this is assumed to be the
* directory of the current CSS file. Using this, minify will rewrite
* all relative URIs in import/url declarations to correctly point to
* the desired files. For this to work, the files *must* exist and be
* visible by the PHP process.
*
* 'symlinks': (default = array()) If the CSS file is stored in
* a symlink-ed directory, provide an array of link paths to
* target paths, where the link paths are within the document root. Because
* paths need to be normalized for this to work, use "//" to substitute
* the doc root in the link paths (the array keys). E.g.:
* <code>
* array('//symlink' => '/real/target/path') // unix
* array('//static' => 'D:\\staticStorage') // Windows
* </code>
*
* @return string
*/
static public function minify($css, $options = array())
{
require_once 'Minify/CSS/Compressor.php';
if (isset($options['preserveComments'])
&& !$options['preserveComments']) {
$css = Minify_CSS_Compressor::process($css, $options);
} else {
require_once 'Minify/CommentPreserver.php';
$css = Minify_CommentPreserver::process(
$css
,array('Minify_CSS_Compressor', 'process')
,array($options)
);
}
if (! isset($options['currentDir']) && ! isset($options['prependRelativePath'])) {
return $css;
}
require_once 'Minify/CSS/UriRewriter.php';
if (isset($options['currentDir'])) {
return Minify_CSS_UriRewriter::rewrite(
$css
,$options['currentDir']
,isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT']
,isset($options['symlinks']) ? $options['symlinks'] : array()
);
} else {
return Minify_CSS_UriRewriter::prepend(
$css
,$options['prependRelativePath']
);
}
}
/**
* Minify a CSS string
*
* @param string $css
*
* @param array $options available options:
*
* 'preserveComments': (default true) multi-line comments that begin
* with "/*!" will be preserved with newlines before and after to
* enhance readability.
*
* 'removeCharsets': (default true) remove all @charset at-rules
*
* 'prependRelativePath': (default null) if given, this string will be
* prepended to all relative URIs in import/url declarations
*
* 'currentDir': (default null) if given, this is assumed to be the
* directory of the current CSS file. Using this, minify will rewrite
* all relative URIs in import/url declarations to correctly point to
* the desired files. For this to work, the files *must* exist and be
* visible by the PHP process.
*
* 'symlinks': (default = array()) If the CSS file is stored in
* a symlink-ed directory, provide an array of link paths to
* target paths, where the link paths are within the document root. Because
* paths need to be normalized for this to work, use "//" to substitute
* the doc root in the link paths (the array keys). E.g.:
* <code>
* array('//symlink' => '/real/target/path') // unix
* array('//static' => 'D:\\staticStorage') // Windows
* </code>
*
* 'docRoot': (default = $_SERVER['DOCUMENT_ROOT'])
* see Minify_CSS_UriRewriter::rewrite
*
* @return string
*/
public static function minify($css, $options = array())
{
$options = array_merge(array('compress' => true, 'removeCharsets' => true, 'preserveComments' => true, 'currentDir' => null, 'docRoot' => $_SERVER['DOCUMENT_ROOT'], 'prependRelativePath' => null, 'symlinks' => array()), $options);
if ($options['removeCharsets']) {
$css = preg_replace('/@charset[^;]+;\\s*/', '', $css);
}
if ($options['compress']) {
if (!$options['preserveComments']) {
require_once 'Compressor.php';
$css = Minify_CSS_Compressor::process($css, $options);
} else {
require_once 'CommentPreserver.php';
require_once 'Compressor.php';
$css = Minify_CommentPreserver::process($css, array('Minify_CSS_Compressor', 'process'), array($options));
}
}
if (!$options['currentDir'] && !$options['prependRelativePath']) {
return $css;
}
require_once 'UriRewriter.php';
if ($options['currentDir']) {
return Minify_CSS_UriRewriter::rewrite($css, $options['currentDir'], $options['docRoot'], $options['symlinks']);
} else {
return Minify_CSS_UriRewriter::prepend($css, $options['prependRelativePath']);
}
}
function test_Minify_CSS_UriRewriter()
{
global $thisDir;
Minify_CSS_UriRewriter::$debugText = '';
$in = file_get_contents($thisDir . '/_test_files/css_uriRewriter/in.css');
$expected = file_get_contents($thisDir . '/_test_files/css_uriRewriter/exp.css');
$actual = Minify_CSS_UriRewriter::rewrite($in, $thisDir . '/_test_files/css_uriRewriter', $thisDir);
$passed = assertTrue($expected === $actual, 'Minify_CSS_UriRewriter : rewrite');
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n---Input:\n\n{$in}\n";
echo "\n---Output: " . countBytes($actual) . " bytes\n\n{$actual}\n\n";
if (!$passed) {
echo "---Expected: " . countBytes($expected) . " bytes\n\n{$expected}\n\n\n";
}
// show debugging only when test run directly
echo "--- Minify_CSS_UriRewriter::\$debugText\n\n", Minify_CSS_UriRewriter::$debugText;
}
Minify_CSS_UriRewriter::$debugText = '';
$in = file_get_contents($thisDir . '/_test_files/css_uriRewriter/in.css');
$expected = file_get_contents($thisDir . '/_test_files/css_uriRewriter/exp_prepend.css');
$actual = Minify_CSS_UriRewriter::prepend($in, 'http://cnd.com/A/B/');
$passed = assertTrue($expected === $actual, 'Minify_CSS_UriRewriter : prepend1');
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n---Input:\n\n{$in}\n";
echo "\n---Output: " . countBytes($actual) . " bytes\n\n{$actual}\n\n";
if (!$passed) {
echo "---Expected: " . countBytes($expected) . " bytes\n\n{$expected}\n\n\n";
}
// show debugging only when test run directly
echo "--- Minify_CSS_UriRewriter::\$debugText\n\n", Minify_CSS_UriRewriter::$debugText;
}
Minify_CSS_UriRewriter::$debugText = '';
$in = file_get_contents($thisDir . '/_test_files/css_uriRewriter/in.css');
$expected = file_get_contents($thisDir . '/_test_files/css_uriRewriter/exp_prepend2.css');
$actual = Minify_CSS_UriRewriter::prepend($in, '//cnd.com/A/B/');
$passed = assertTrue($expected === $actual, 'Minify_CSS_UriRewriter : prepend2');
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n---Input:\n\n{$in}\n";
echo "\n---Output: " . countBytes($actual) . " bytes\n\n{$actual}\n\n";
if (!$passed) {
echo "---Expected: " . countBytes($expected) . " bytes\n\n{$expected}\n\n\n";
}
// show debugging only when test run directly
echo "--- Minify_CSS_UriRewriter::\$debugText\n\n", Minify_CSS_UriRewriter::$debugText;
}
Minify_CSS_UriRewriter::$debugText = '';
$in = '../../../../assets/skins/sam/sprite.png';
$exp = '/yui/assets/skins/sam/sprite.png';
$actual = Minify_CSS_UriRewriter::rewriteRelative($in, 'sf_root_dir\\web\\yui\\menu\\assets\\skins\\sam', 'sf_root_dir\\web');
$passed = assertTrue($exp === $actual, 'Minify_CSS_UriRewriter : Issue 99');
if (__FILE__ === realpath($_SERVER['SCRIPT_FILENAME'])) {
echo "\n---Input:\n\n{$in}\n";
echo "\n---Output: " . countBytes($actual) . " bytes\n\n{$actual}\n\n";
if (!$passed) {
echo "---Expected: " . countBytes($exp) . " bytes\n\n{$exp}\n\n\n";
}
// show debugging only when test run directly
echo "--- Minify_CSS_UriRewriter::\$debugText\n\n", Minify_CSS_UriRewriter::$debugText;
}
}
/**
* Add line numbers in C-style comments
*
* This uses a very basic parser easily fooled by comment tokens inside
* strings or regexes, but, otherwise, generally clean code will not be
* mangled. URI rewriting can also be performed.
*
* @param string $content
*
* @param array $options available options:
*
* 'id': (optional) string to identify file. E.g. file name/path
*
* 'currentDir': (default null) if given, this is assumed to be the
* directory of the current CSS file. Using this, minify will rewrite
* all relative URIs in import/url declarations to correctly point to
* the desired files, and prepend a comment with debugging information about
* this process.
*
* @return string
*/
public static function minify($content, $options = array())
{
$id = isset($options['id']) && $options['id'] ? $options['id'] : '';
$content = str_replace("\r\n", "\n", $content);
$lines = explode("\n", $content);
$numLines = count($lines);
// determine left padding
$padTo = strlen($numLines);
$inComment = false;
$i = 0;
$newLines = array();
while (null !== ($line = array_shift($lines))) {
if ('' !== $id && 0 == $i % 50) {
array_push($newLines, '', "/* {$id} */", '');
}
++$i;
$newLines[] = self::_addNote($line, $i, $inComment, $padTo);
$inComment = self::_eolInComment($line, $inComment);
}
$content = implode("\n", $newLines) . "\n";
// check for desired URI rewriting
if (isset($options['currentDir'])) {
require_once W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php';
Minify_CSS_UriRewriter::$debugText = '';
$content = Minify_CSS_UriRewriter::rewrite($content, $options['currentDir'], isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'], isset($options['symlinks']) ? $options['symlinks'] : array(), isset($options['browserCacheId']) ? $options['browserCacheId'] : 0, isset($options['browserCacheExtensions']) ? $options['browserCacheExtensions'] : array());
$content = "/* Minify_CSS_UriRewriter::\$debugText\n\n" . Minify_CSS_UriRewriter::$debugText . "*/\n" . $content;
} elseif (isset($options['prependRelativePath'])) {
require_once W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php';
Minify_CSS_UriRewriter::$debugText = '';
$content = Minify_CSS_UriRewriter::prepend($content, $options['prependRelativePath'], isset($options['browserCacheId']) ? $options['browserCacheId'] : 0, isset($options['browserCacheExtensions']) ? $options['browserCacheExtensions'] : array());
}
return $content;
}
public static function minify($css, $options = array())
{
$options = array_merge(array('remove_bslash' => true, 'compress_colors' => true, 'compress_font-weight' => true, 'lowercase_s' => false, 'optimise_shorthands' => 1, 'remove_last_;' => false, 'case_properties' => 1, 'sort_properties' => false, 'sort_selectors' => false, 'merge_selectors' => 2, 'discard_invalid_properties' => false, 'css_level' => 'CSS2.1', 'preserve_css' => false, 'timestamp' => false, 'template' => 'default'), $options);
set_include_path(get_include_path() . PATH_SEPARATOR . W3TC_LIB_CSSTIDY_DIR);
require_once 'class.csstidy.php';
$csstidy = new csstidy();
foreach ($options as $option => $value) {
$csstidy->set_cfg($option, $value);
}
$csstidy->load_template($options['template']);
$csstidy->parse($css);
$css = $csstidy->print->plain();
if (isset($options['currentDir']) || isset($options['prependRelativePath'])) {
require_once W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php';
$browsercache_id = isset($options['browserCacheId']) ? $options['browserCacheId'] : 0;
$browsercache_extensions = isset($options['browserCacheExtensions']) ? $options['browserCacheExtensions'] : array();
if (isset($options['currentDir'])) {
$document_root = isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'];
$symlinks = isset($options['symlinks']) ? $options['symlinks'] : array();
return Minify_CSS_UriRewriter::rewrite($css, $options['currentDir'], $document_root, $symlinks, $browsercache_id, $browsercache_extensions);
} else {
return Minify_CSS_UriRewriter::prepend($css, $options['prependRelativePath'], $browsercache_id, $browsercache_extensions);
}
}
return $css;
}
/**
* Minifies content
* @param string $content
* @param array $options
* @return string
*/
public static function minify($content, $options = array())
{
if (isset($options['currentDir'])) {
require_once W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php';
$content = Minify_CSS_UriRewriter::rewrite($content, $options['currentDir'], isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'], isset($options['symlinks']) ? $options['symlinks'] : array());
} elseif (isset($options['prependRelativePath'])) {
require_once W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php';
$content = Minify_CSS_UriRewriter::prepend($content, $options['prependRelativePath']);
}
return $content;
}
/**
* Minifies content
* @param string $content
* @param array $options
* @return string
*/
public static function minify($content, $options = array())
{
$browsercache_id = isset($options['browserCacheId']) ? $options['browserCacheId'] : 0;
$browsercache_extensions = isset($options['browserCacheExtensions']) ? $options['browserCacheExtensions'] : array();
if (isset($options['currentDir'])) {
require_once W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php';
$document_root = isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'];
$symlinks = isset($options['symlinks']) ? $options['symlinks'] : array();
$content = Minify_CSS_UriRewriter::rewrite($content, $options['currentDir'], $document_root, $symlinks, $browsercache_id, $browsercache_extensions);
} elseif (isset($options['prependRelativePath'])) {
require_once W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php';
$content = Minify_CSS_UriRewriter::prepend($content, $options['prependRelativePath'], $browsercache_id, $browsercache_extensions);
}
return $content;
}
/**
* Minify a CSS string
*
* @param string $css
*
* @param array $options available options:
*
* 'removeCharsets': (default true) remove all @charset at-rules
*
* 'prependRelativePath': (default null) if given, this string will be
* prepended to all relative URIs in import/url declarations
*
* 'currentDir': (default null) if given, this is assumed to be the
* directory of the current CSS file. Using this, minify will rewrite
* all relative URIs in import/url declarations to correctly point to
* the desired files. For this to work, the files *must* exist and be
* visible by the PHP process.
*
* 'symlinks': (default = array()) If the CSS file is stored in
* a symlink-ed directory, provide an array of link paths to
* target paths, where the link paths are within the document root. Because
* paths need to be normalized for this to work, use "//" to substitute
* the doc root in the link paths (the array keys). E.g.:
* <code>
* array('//symlink' => '/real/target/path') // unix
* array('//static' => 'D:\\staticStorage') // Windows
* </code>
*
* 'docRoot': (default = $_SERVER['DOCUMENT_ROOT'])
* see Minify_CSS_UriRewriter::rewrite
*
* @return string
*/
public static function minify($css, $options = array())
{
$options = array_merge(array('compress' => true, 'removeCharsets' => true, 'currentDir' => null, 'docRoot' => $_SERVER['DOCUMENT_ROOT'], 'prependRelativePath' => null, 'symlinks' => array()), $options);
if ($options['removeCharsets']) {
$css = preg_replace('/@charset[^;]+;\\s*/', '', $css);
}
if ($options['compress']) {
$obj = new CSSmin();
$css = $obj->run($css);
}
if (!$options['currentDir'] && !$options['prependRelativePath']) {
return $css;
}
if ($options['currentDir']) {
return Minify_CSS_UriRewriter::rewrite($css, $options['currentDir'], $options['docRoot'], $options['symlinks']);
} else {
return Minify_CSS_UriRewriter::prepend($css, $options['prependRelativePath']);
}
}
/**
* Internal function for (maybe) minifying assets
*
* @param Type of asset to minify (css/js)
* @param Contents to be minified
* @param The name of the file being minified (used for logging)
* @param mixed A relative path to use, if provided (for css minification)
* @return String (maybe) minified contents of file
*/
protected function _minify($type, $contents, $filename, $rel = FALSE)
{
// used in case we need to return orig
$contents_orig = $contents;
switch ($type) {
case 'js':
/**
* JS pre-minify hook
*/
if ($this->EE->extensions->active_hook('minimee_pre_minify_js')) {
Minimee_helper::log('Hook `minimee_pre_minify_js` has been activated.', 3);
// pass contents to be minified, and instance of self
$contents = $this->EE->extensions->call('minimee_pre_minify_js', $contents, $filename, $this);
if ($this->EE->extensions->end_script === TRUE) {
return $contents;
}
// re-set $contents_orig in case we need to return
$contents_orig = $contents;
}
// HOOK END
// be sure we want to minify
if ($this->config->is_yes('minify_js')) {
// See if JSMinPlus was explicitly requested
if ($this->config->js_library == 'jsminplus') {
Minimee_helper::log('Running minification with JSMinPlus.', 3);
Minimee_helper::library('jsminplus');
$contents = JSMinPlus::minify($contents);
} else {
if ($this->config->js_library == 'jsmin') {
Minimee_helper::log('Running minification with JSMin.', 3);
Minimee_helper::library('jsmin');
$contents = JSMin::minify($contents);
}
}
}
break;
case 'css':
/**
* CSS pre-minify hook
*/
if ($this->EE->extensions->active_hook('minimee_pre_minify_css')) {
Minimee_helper::log('Hook `minimee_pre_minify_css` has been activated.', 3);
// pass contents to be minified, relative path, and instance of self
$contents = $this->EE->extensions->call('minimee_pre_minify_css', $contents, $filename, $rel, $this);
if ($this->EE->extensions->end_script === TRUE) {
return $contents;
}
// copy to $contents_orig in case we need to return
$contents_orig = $contents;
}
// HOOK END
// prepend URL if relative path exists & configured to do so
if ($rel !== FALSE && $this->config->is_yes('css_prepend_mode')) {
Minimee_helper::library('css_urirewriter');
$contents = Minify_CSS_UriRewriter::prepend($contents, $rel . '/');
// copy to $contents_orig in case we need to return
$contents_orig = $contents;
}
// minify if configured to do so
if ($this->config->is_yes('minify_css')) {
// See if CSSMin was explicitly requested
if ($this->config->css_library == 'cssmin') {
Minimee_helper::log('Running minification with CSSMin.', 3);
Minimee_helper::library('cssmin');
$cssmin = new CSSmin(FALSE);
$contents = $cssmin->run($contents);
unset($cssmin);
} else {
if ($this->config->css_library == 'minify') {
Minimee_helper::log('Running minification with Minify_CSS.', 3);
Minimee_helper::library('minify');
$contents = Minify_CSS::minify($contents);
}
}
}
break;
}
// calculate weight loss
$before = strlen($contents_orig);
$after = strlen($contents);
$diff = $before - $after;
// quick check that contents are not empty
if ($after == 0) {
Minimee_helper::log('Minification has returned an empty string for `' . $filename . '`.', 2);
}
// did we actually reduce our file size? It's possible an already minified asset
// uses a more aggressive algorithm than Minify; in that case, keep original contents
if ($diff > 0) {
$diff_formatted = $diff < 100 ? $diff . 'b' : round($diff / 1000, 2) . 'kb';
$change = round($diff / $before * 100, 2);
Minimee_helper::log('Minification has reduced ' . $filename . ' by ' . $diff_formatted . ' (' . $change . '%).', 3);
// add to our running total
$this->diff_total($diff);
} else {
Minimee_helper::log('Minification unable to reduce ' . $filename . ', so using original content.', 3);
$contents = $contents_orig;
}
// cleanup (leave some smaller variables because they may or may not have ever been set)
unset($contents_orig);
// return our (maybe) minified contents
return $contents;
}
function CssEncoder($css, $options = array())
{
require_once 'Minify/CSS/UriRewriter.php';
if (isset($options['currentDir'])) {
return Minify_CSS_UriRewriter::rewrite($css, $options['currentDir'], isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT'], isset($options['symlinks']) ? $options['symlinks'] : array());
} else {
return Minify_CSS_UriRewriter::prepend($css, $options['prependRelativePath']);
}
}
/**
* Given an asset, fetches and returns minified contents.
*
* @param Minimee_BaseAssetModel $asset
* @return String
*/
protected function minifyAsset($asset)
{
craft()->config->maxPowerCaptain();
switch ($this->type) {
case MinimeeType::Js:
if ($this->settings->minifyJsEnabled) {
$contents = \JSMin::minify($asset->contents);
} else {
$contents = $asset->contents;
}
// Play nice with others by ensuring a semicolon at eof
if (substr($contents, -1) != ';') {
$contents .= ';';
}
break;
case MinimeeType::Css:
$cssPrependUrl = dirname($asset->filenameUrl) . '/';
$contents = \Minify_CSS_UriRewriter::prepend($asset->contents, $cssPrependUrl);
if ($this->settings->minifyCssEnabled) {
$contents = \Minify_CSS::minify($contents);
}
break;
}
return $contents;
}
/**
* Rewrite the urls in a CSS file
*
* @param string $file The path to the file
* @param string $content The file contents
* @return string
*/
public static function rewriteUris($file, $content)
{
$path = dirname($file) . '/';
return Minify_CSS_UriRewriter::prepend($content, $path);
}
/**
* Method to (maybe) minify CSS asset
*
* @param Minimee_BaseAssetModel $asset
* @return String
*/
protected function minifyCssAsset($asset)
{
$contents = $asset->contents;
if ($this->settings->minifyCssEnabled) {
$compressor = new \CSSmin();
$contents = $compressor->run($contents);
}
if ($this->settings->cssPrependUrlEnabled) {
$cssPrependUrl = $this->settings->cssPrependUrl;
if (!$cssPrependUrl) {
$cssPrependUrl = dirname($asset->filenameUrl) . '/';
}
$contents = \Minify_CSS_UriRewriter::prepend($contents, $cssPrependUrl);
}
return $contents;
}
/**
* In CSS content, prepend a path to relative URLs.
*
* This is useful to process a CSS view being used as an extension.
*
* @param string $css CSS
* @param string $path Path to prepend. E.g. "foo/bar/" or "../"
*
* @return string
* @since 2.2
*/
function elgg_prepend_css_urls($css, $path)
{
return Minify_CSS_UriRewriter::prepend($css, $path);
}
