From 19985dbb8c0aa66dc4bf7905abc1148de909097d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= Date: Tue, 11 Jan 2022 12:35:47 +0100 Subject: prvi-commit --- admin/survey/minify/lib/Minify.php | 758 +++++++++++++++++++++++++++++++++++++ 1 file changed, 758 insertions(+) create mode 100644 admin/survey/minify/lib/Minify.php (limited to 'admin/survey/minify/lib/Minify.php') diff --git a/admin/survey/minify/lib/Minify.php b/admin/survey/minify/lib/Minify.php new file mode 100644 index 0000000..b01a2b9 --- /dev/null +++ b/admin/survey/minify/lib/Minify.php @@ -0,0 +1,758 @@ + + * @author Stephen Clay + * @copyright 2008 Ryan Grove, Stephen Clay. All rights reserved. + * @license http://opensource.org/licenses/bsd-license.php New BSD License + * @link https://github.com/mrclay/minify + */ +class Minify +{ + + /** + * API version + * + * This is only bumped when API breaks are done and should follow the major version of the library + * + * @var int + */ + const VERSION = 3; + + const TYPE_CSS = 'text/css'; + const TYPE_HTML = 'text/html'; + // there is some debate over the ideal JS Content-Type, but this is the + // Apache default and what Yahoo! uses.. + const TYPE_JS = 'application/x-javascript'; + const URL_DEBUG = 'https://github.com/mrclay/minify/blob/master/docs/Debugging.wiki.md'; + + /** + * Any Minify_Cache_* object or null (i.e. no server cache is used) + * + * @var Minify_CacheInterface + */ + private $cache; + + /** + * Active controller for current request + * + * @var Minify_Controller_Base + */ + protected $controller; + + /** + * @var Minify_Env + */ + protected $env; + + /** + * @var Minify_SourceInterface[] + */ + protected $sources; + + /** + * @var string + */ + protected $selectionId; + + /** + * Options for current request + * + * @var array + */ + protected $options; + + /** + * @var LoggerInterface|null + */ + protected $logger; + + /** + * @param Minify_CacheInterface $cache + * @param LoggerInterface $logger + */ + public function __construct(Minify_CacheInterface $cache, LoggerInterface $logger = null) + { + $this->cache = $cache; + $this->logger = $logger; + } + + /** + * Get default Minify options. + * + * @return array options for Minify + */ + public function getDefaultOptions() + { + return array( + 'isPublic' => true, + 'encodeOutput' => function_exists('gzdeflate'), + 'encodeMethod' => null, // determine later + 'encodeLevel' => 9, + + 'minifiers' => array( + Minify::TYPE_JS => array('JSMin\\JSMin', 'minify'), + Minify::TYPE_CSS => array('Minify_CSSmin', 'minify'), + Minify::TYPE_HTML => array('Minify_HTML', 'minify'), + ), + 'minifierOptions' => array(), // no minifier options + + 'contentTypeCharset' => 'utf-8', + 'maxAge' => 1800, // 30 minutes + 'rewriteCssUris' => true, + 'bubbleCssImports' => false, + 'quiet' => false, // serve() will send headers and output + 'debug' => false, + 'concatOnly' => false, + + // if you override these, the response codes MUST be directly after + // the first space. + 'badRequestHeader' => 'HTTP/1.0 400 Bad Request', + 'errorHeader' => 'HTTP/1.0 500 Internal Server Error', + + // callback function to see/modify content of all sources + 'postprocessor' => null, + // file to require to load preprocessor + 'postprocessorRequire' => null, + + /** + * If this string is not empty AND the serve() option 'bubbleCssImports' is + * NOT set, then serve() will check CSS files for @import declarations that + * appear too late in the combined stylesheet. If found, serve() will prepend + * the output with this warning. + */ + 'importWarning' => "/* See https://github.com/mrclay/minify/blob/master/docs/CommonProblems.wiki.md#imports-can-appear-in-invalid-locations-in-combined-css-files */\n" + ); + } + + /** + * Serve a request for a minified file. + * + * Here are the available options and defaults: + * + * 'isPublic' : send "public" instead of "private" in Cache-Control + * headers, allowing shared caches to cache the output. (default true) + * + * 'quiet' : set to true to have serve() return an array rather than sending + * any headers/output (default false) + * + * 'encodeOutput' : set to false to disable content encoding, and not send + * the Vary header (default true) + * + * 'encodeMethod' : generally you should let this be determined by + * HTTP_Encoder (leave null), but you can force a particular encoding + * to be returned, by setting this to 'gzip' or '' (no encoding) + * + * 'encodeLevel' : level of encoding compression (0 to 9, default 9) + * + * 'contentTypeCharset' : appended to the Content-Type header sent. Set to a falsey + * value to remove. (default 'utf-8') + * + * 'maxAge' : set this to the number of seconds the client should use its cache + * before revalidating with the server. This sets Cache-Control: max-age and the + * Expires header. Unlike the old 'setExpires' setting, this setting will NOT + * prevent conditional GETs. Note this has nothing to do with server-side caching. + * + * 'rewriteCssUris' : If true, serve() will automatically set the 'currentDir' + * minifier option to enable URI rewriting in CSS files (default true) + * + * 'bubbleCssImports' : If true, all @import declarations in combined CSS + * files will be move to the top. Note this may alter effective CSS values + * due to a change in order. (default false) + * + * 'debug' : set to true to minify all sources with the 'Lines' controller, which + * eases the debugging of combined files. This also prevents 304 responses. + * @see Minify_Lines::minify() + * + * 'concatOnly' : set to true to disable minification and simply concatenate the files. + * For JS, no minifier will be used. For CSS, only URI rewriting is still performed. + * + * 'minifiers' : to override Minify's default choice of minifier function for + * a particular content-type, specify your callback under the key of the + * content-type: + * + * // call customCssMinifier($css) for all CSS minification + * $options['minifiers'][Minify::TYPE_CSS] = 'customCssMinifier'; + * + * // don't minify Javascript at all + * $options['minifiers'][Minify::TYPE_JS] = 'Minify::nullMinifier'; + * + * + * 'minifierOptions' : to send options to the minifier function, specify your options + * under the key of the content-type. E.g. To send the CSS minifier an option: + * + * // give CSS minifier array('optionName' => 'optionValue') as 2nd argument + * $options['minifierOptions'][Minify::TYPE_CSS]['optionName'] = 'optionValue'; + * + * + * 'contentType' : (optional) this is only needed if your file extension is not + * js/css/html. The given content-type will be sent regardless of source file + * extension, so this should not be used in a Groups config with other + * Javascript/CSS files. + * + * 'importWarning' : serve() will check CSS files for @import declarations that + * appear too late in the combined stylesheet. If found, serve() will prepend + * the output with this warning. To disable this, set this option to empty string. + * + * Any controller options are documented in that controller's createConfiguration() method. + * + * @param Minify_ControllerInterface $controller instance of subclass of Minify_Controller_Base + * + * @param array $options controller/serve options + * + * @return null|array if the 'quiet' option is set to true, an array + * with keys "success" (bool), "statusCode" (int), "content" (string), and + * "headers" (array). + * + * @throws Exception + */ + public function serve(Minify_ControllerInterface $controller, $options = array()) + { + $this->env = $controller->getEnv(); + + $options = array_merge($this->getDefaultOptions(), $options); + + $config = $controller->createConfiguration($options); + + $this->sources = $config->getSources(); + $this->selectionId = $config->getSelectionId(); + $this->options = $this->analyzeSources($config->getOptions()); + + if (!$this->options['quiet'] && !headers_sent()) { + ini_set('zlib.output_compression', '0'); + } + + // check request validity + if (!$this->sources) { + // invalid request! + if (! $this->options['quiet']) { + $this->errorExit($this->options['badRequestHeader'], self::URL_DEBUG); + } else { + list(,$statusCode) = explode(' ', $this->options['badRequestHeader']); + + return array( + 'success' => false, + 'statusCode' => (int)$statusCode, + 'content' => '', + 'headers' => array(), + ); + } + } + + $this->controller = $controller; + + if ($this->options['debug']) { + $this->setupDebug(); + $this->options['maxAge'] = 0; + } + + // determine encoding + if ($this->options['encodeOutput']) { + $sendVary = true; + if ($this->options['encodeMethod'] !== null) { + // controller specifically requested this + $contentEncoding = $this->options['encodeMethod']; + } else { + // sniff request header + // depending on what the client accepts, $contentEncoding may be + // 'x-gzip' while our internal encodeMethod is 'gzip'. Calling + // getAcceptedEncoding(false, false) leaves out compress and deflate as options. + $list = HTTP_Encoder::getAcceptedEncoding(false, false); + list($this->options['encodeMethod'], $contentEncoding) = $list; + $sendVary = ! HTTP_Encoder::isBuggyIe(); + } + } else { + $this->options['encodeMethod'] = ''; // identity (no encoding) + } + + // check client cache + $cgOptions = array( + 'lastModifiedTime' => $this->options['lastModifiedTime'], + 'isPublic' => $this->options['isPublic'], + 'encoding' => $this->options['encodeMethod'], + ); + + if ($this->options['maxAge'] > 0) { + $cgOptions['maxAge'] = $this->options['maxAge']; + } elseif ($this->options['debug']) { + $cgOptions['invalidate'] = true; + } + + $cg = new HTTP_ConditionalGet($cgOptions); + if ($cg->cacheIsValid) { + // client's cache is valid + if (! $this->options['quiet']) { + $cg->sendHeaders(); + + return; + } + + return array( + 'success' => true, + 'statusCode' => 304, + 'content' => '', + 'headers' => $cg->getHeaders(), + ); + } + + // client will need output + $headers = $cg->getHeaders(); + unset($cg); + + if ($this->options['contentType'] === self::TYPE_CSS && $this->options['rewriteCssUris']) { + $this->setupUriRewrites(); + } + + if ($this->options['concatOnly']) { + $this->options['minifiers'][self::TYPE_JS] = false; + foreach ($this->sources as $key => $source) { + if ($this->options['contentType'] === self::TYPE_JS) { + $source->setMinifier('Minify::nullMinifier'); + } elseif ($this->options['contentType'] === self::TYPE_CSS) { + $source->setMinifier(array('Minify_CSSmin', 'minify')); + $sourceOpts = $source->getMinifierOptions(); + $sourceOpts['compress'] = false; + $source->setMinifierOptions($sourceOpts); + } + } + } + + // check server cache + if (! $this->options['debug']) { + // using cache + // the goal is to use only the cache methods to sniff the length and + // output the content, as they do not require ever loading the file into + // memory. + $cacheId = $this->_getCacheId(); + $fullCacheId = ($this->options['encodeMethod']) ? $cacheId . '.gz' : $cacheId; + + // check cache for valid entry + $cacheIsReady = $this->cache->isValid($fullCacheId, $this->options['lastModifiedTime']); + if ($cacheIsReady) { + $cacheContentLength = $this->cache->getSize($fullCacheId); + } else { + // generate & cache content + try { + $content = $this->combineMinify(); + } catch (Exception $e) { + $this->logger && $this->logger->critical($e->getMessage()); + if (! $this->options['quiet']) { + $this->errorExit($this->options['errorHeader'], self::URL_DEBUG); + } + throw $e; + } + $this->cache->store($cacheId, $content); + if (function_exists('gzencode') && $this->options['encodeMethod']) { + $this->cache->store($cacheId . '.gz', gzencode($content, $this->options['encodeLevel'])); + } + } + } else { + // no cache + $cacheIsReady = false; + try { + $content = $this->combineMinify(); + } catch (Exception $e) { + $this->logger && $this->logger->critical($e->getMessage()); + if (! $this->options['quiet']) { + $this->errorExit($this->options['errorHeader'], self::URL_DEBUG); + } + throw $e; + } + } + if (! $cacheIsReady && $this->options['encodeMethod']) { + // still need to encode + $content = gzencode($content, $this->options['encodeLevel']); + } + + // add headers + if ($cacheIsReady) { + $headers['Content-Length'] = $cacheContentLength; + } else { + if (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2)) { + $headers['Content-Length'] = mb_strlen($content, '8bit'); + } else { + $headers['Content-Length'] = strlen($content); + } + } + + $headers['Content-Type'] = $this->options['contentType']; + if ($this->options['contentTypeCharset']) { + $headers['Content-Type'] .= '; charset=' . $this->options['contentTypeCharset']; + } + + if ($this->options['encodeMethod'] !== '') { + $headers['Content-Encoding'] = $contentEncoding; + } + if ($this->options['encodeOutput'] && $sendVary) { + $headers['Vary'] = 'Accept-Encoding'; + } + + if (! $this->options['quiet']) { + // output headers & content + foreach ($headers as $name => $val) { + header($name . ': ' . $val); + } + if ($cacheIsReady) { + $this->cache->display($fullCacheId); + } else { + echo $content; + } + } else { + return array( + 'success' => true, + 'statusCode' => 200, + 'content' => $cacheIsReady ? $this->cache->fetch($fullCacheId) : $content, + 'headers' => $headers, + ); + } + } + + /** + * Return combined minified content for a set of sources + * + * No internal caching will be used and the content will not be HTTP encoded. + * + * @param array $sources array of filepaths and/or Minify_Source objects + * + * @param array $options (optional) array of options for serve. + * + * @return string + */ + public function combine($sources, $options = array()) + { + $tmpCache = $this->cache; + $this->cache = new Minify_Cache_Null(); + + $env = new Minify_Env(); + $sourceFactory = new Minify_Source_Factory($env, array( + 'checkAllowDirs' => false, + ), $this->cache); + $controller = new Minify_Controller_Files($env, $sourceFactory, $this->logger); + + $options = array_merge($options, array( + 'files' => (array)$sources, + 'quiet' => true, + 'encodeMethod' => '', + 'lastModifiedTime' => 0, + )); + $out = $this->serve($controller, $options); + + $this->cache = $tmpCache; + + return $out['content']; + } + + /** + * Show an error page + * + * @param string $header Full header. E.g. 'HTTP/1.0 500 Internal Server Error' + * @param string $url URL to direct the user to + * @param string $msgHtml HTML message for the client + * + * @return void + * @internal This is not part of the public API and is subject to change + * @access private + */ + public function errorExit($header, $url = '', $msgHtml = '') + { + $url = htmlspecialchars($url, ENT_QUOTES); + list(,$h1) = explode(' ', $header, 2); + $h1 = htmlspecialchars($h1); + // FastCGI environments require 3rd arg to header() to be set + list(, $code) = explode(' ', $header, 3); + header($header, true, $code); + header('Content-Type: text/html; charset=utf-8'); + echo "

$h1

"; + if ($msgHtml) { + echo $msgHtml; + } + if ($url) { + echo "

Please see $url.

"; + } + exit; + } + + /** + * Default minifier for .min or -min JS files. + * + * @param string $content + * @return string + */ + public static function nullMinifier($content) + { + if (isset($content[0]) && $content[0] === "\xef") { + $content = substr($content, 3); + } + $content = str_replace("\r\n", "\n", $content); + + return trim($content); + } + + /** + * Setup CSS sources for URI rewriting + */ + protected function setupUriRewrites() + { + foreach ($this->sources as $key => $source) { + $file = $this->env->normalizePath($source->getFilePath()); + $minifyOptions = $source->getMinifierOptions(); + + if ($file + && !isset($minifyOptions['currentDir']) + && !isset($minifyOptions['prependRelativePath'])) { + $minifyOptions['currentDir'] = dirname($file); + $source->setMinifierOptions($minifyOptions); + } + } + } + + /** + * Set up sources to use Minify_Lines + */ + protected function setupDebug() + { + foreach ($this->sources as $source) { + $source->setMinifier(array('Minify_Lines', 'minify')); + $id = $source->getId(); + $source->setMinifierOptions(array( + 'id' => (is_file($id) ? basename($id) : $id), + )); + } + } + + /** + * Combines sources and minifies the result. + * + * @return string + * + * @throws Exception + */ + protected function combineMinify() + { + $type = $this->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 + if (isset($this->options['minifierOptions'][$type])) { + $defaultOptions = $this->options['minifierOptions'][$type]; + } else { + $defaultOptions = array(); + } + + // if minifier not set, default is no minification. source objects + // may still override this + if (isset($this->options['minifiers'][$type])) { + $defaultMinifier = $this->options['minifiers'][$type]; + } else { + $defaultMinifier = false; + } + + // process groups of sources with identical minifiers/options + $content = array(); + $i = 0; + $l = count($this->sources); + $groupToProcessTogether = array(); + $lastMinifier = null; + $lastOptions = null; + do { + // get next source + $source = null; + if ($i < $l) { + $source = $this->sources[$i]; + $sourceContent = $source->getContent(); + + // allow the source to override our minifier and options + $minifier = $source->getMinifier(); + if (!$minifier) { + $minifier = $defaultMinifier; + } + $options = array_merge($defaultOptions, $source->getMinifierOptions()); + } + // do we need to process our group right now? + if ($i > 0 // yes, we have at least the first group populated + && ( + ! $source // yes, we ran out of sources + || $type === self::TYPE_CSS // yes, to process CSS individually (avoiding PCRE bugs/limits) + || $minifier !== $lastMinifier // yes, minifier changed + || $options !== $lastOptions)) { // yes, options changed + // minify previous sources with last settings + $imploded = implode($implodeSeparator, $groupToProcessTogether); + $groupToProcessTogether = array(); + if ($lastMinifier) { + try { + $content[] = call_user_func($lastMinifier, $imploded, $lastOptions); + } catch (Exception $e) { + throw new Exception("Exception in minifier: " . $e->getMessage()); + } + } else { + $content[] = $imploded; + } + } + // add content to the group + if ($source) { + $groupToProcessTogether[] = $sourceContent; + $lastMinifier = $minifier; + $lastOptions = $options; + } + $i++; + } while ($source); + + $content = implode($implodeSeparator, $content); + + if ($type === self::TYPE_CSS && false !== strpos($content, '@import')) { + $content = $this->handleCssImports($content); + } + + // do any post-processing (esp. for editing build URIs) + if ($this->options['postprocessorRequire']) { + require_once $this->options['postprocessorRequire']; + } + if ($this->options['postprocessor']) { + $content = call_user_func($this->options['postprocessor'], $content, $type); + } + + return $content; + } + + /** + * Make a unique cache id for for this request. + * + * Any settings that could affect output are taken into consideration + * + * @param string $prefix + * + * @return string + */ + protected function _getCacheId($prefix = 'minify') + { + $name = preg_replace('/[^a-zA-Z0-9\\.=_,]/', '', $this->selectionId); + $name = preg_replace('/\\.+/', '.', $name); + $name = substr($name, 0, 100 - 34 - strlen($prefix)); + $md5 = md5(serialize(array( + Minify_SourceSet::getDigest($this->sources), + $this->options['minifiers'], + $this->options['minifierOptions'], + $this->options['postprocessor'], + $this->options['bubbleCssImports'], + Minify::VERSION, + ))); + + return "{$prefix}_{$name}_{$md5}"; + } + + /** + * Bubble CSS @imports to the top or prepend a warning if an import is detected not at the top. + * + * @param string $css + * + * @return string + */ + protected function handleCssImports($css) + { + if ($this->options['bubbleCssImports']) { + // bubble CSS imports + preg_match_all('/@import.*?;/', $css, $imports); + $css = implode('', $imports[0]) . preg_replace('/@import.*?;/', '', $css); + + return $css; + } + + if ('' === $this->options['importWarning']) { + return $css; + } + + // remove comments so we don't mistake { in a comment as a block + $noCommentCss = preg_replace('@/\\*[\\s\\S]*?\\*/@', '', $css); + $lastImportPos = strrpos($noCommentCss, '@import'); + $firstBlockPos = strpos($noCommentCss, '{'); + if (false !== $lastImportPos + && false !== $firstBlockPos + && $firstBlockPos < $lastImportPos + ) { + // { appears before @import : prepend warning + $css = $this->options['importWarning'] . $css; + } + + return $css; + } + + /** + * Analyze sources (if there are any) and set $options 'contentType' + * and 'lastModifiedTime' if they already aren't. + * + * @param array $options options for Minify + * + * @return array options for Minify + */ + protected function analyzeSources($options = array()) + { + if (!$this->sources) { + return $options; + } + + $type = null; + foreach ($this->sources as $source) { + $sourceType = $source->getContentType(); + + if (!empty($options['contentType'])) { + // just verify sources have null content type or match the options + if ($sourceType !== null && $sourceType !== $options['contentType']) { + $this->logger && $this->logger->warning("ContentType mismatch: '{$sourceType}' != '{$options['contentType']}'"); + + $this->sources = array(); + + return $options; + } + + continue; + } + + if ($type === null) { + $type = $sourceType; + } elseif ($sourceType !== $type) { + $this->logger && $this->logger->warning("ContentType mismatch: '{$sourceType}' != '{$type}'"); + + $this->sources = array(); + + return $options; + } + } + + if (empty($options['contentType'])) { + if (null === $type) { + $type = 'text/plain'; + } + $options['contentType'] = $type; + } + + // last modified is needed for caching, even if setExpires is set + if (!isset($options['lastModifiedTime'])) { + $max = 0; + foreach ($this->sources as $source) { + $max = max($source->getLastModified(), $max); + } + $options['lastModifiedTime'] = $max; + } + + return $options; + } +} -- cgit v1.2.3