Server : Apache System : Linux pod-100823:apache2_74:v0.5.7 5.4.0-1138-gcp #147~18.04.1-Ubuntu SMP Mon Oct 7 21:46:26 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33.7 Disable Function : apache_child_terminate,apache_get_modules,apache_get_version,apache_getenv,apache_note,apache_setenv,disk_free_space,disk_total_space,diskfreespace,dl,exec,fastcgi_finish_request,link,opcache_compile_file,opcache_get_configuration,opcache_invalidate,opcache_is_script_cached,opcache_reset,passthru,pclose,pcntl_exec,popen,posix_getpid,posix_getppid,posix_getpwuid,posix_kill,posix_mkfifo,posix_setegid,posix_seteuid,posix_setgid,posix_setpgid,posix_setsid,posix_setuid,posix_uname,proc_close,proc_get_status,proc_nice,proc_open,proc_terminate,realpath_cache_get,shell_exec,show_source,symlink,system Directory : /nas/content/live/attorneyexperi/wp-content/plugins/wp-rocket/inc/Dependencies/Minify/ |
<?php /** * Abstract minifier class * * Please report bugs on https://github.com/matthiasmullie/minify/issues * * @author Matthias Mullie <minify@mullie.eu> * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved * @license MIT License */ namespace WP_Rocket\Dependencies\Minify; use WP_Rocket\Dependencies\Minify\Exceptions\IOException; use Psr\Cache\CacheItemInterface; /** * Abstract minifier class. * * Please report bugs on https://github.com/matthiasmullie/minify/issues * * @package Minify * @author Matthias Mullie <minify@mullie.eu> * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved * @license MIT License */ abstract class Minify { /** * The data to be minified. * * @var string[] */ protected $data = array(); /** * Array of patterns to match. * * @var string[] */ protected $patterns = array(); /** * This array will hold content of strings and regular expressions that have * been extracted from the JS source code, so we can reliably match "code", * without having to worry about potential "code-like" characters inside. * * @var string[] */ public $extracted = array(); /** * Init the minify class - optionally, code may be passed along already. */ public function __construct(/* $data = null, ... */) { // it's possible to add the source through the constructor as well ;) if (func_num_args()) { call_user_func_array(array($this, 'add'), func_get_args()); } } /** * Add a file or straight-up code to be minified. * * @param string|string[] $data * * @return static */ public function add($data /* $data = null, ... */) { // bogus "usage" of parameter $data: scrutinizer warns this variable is // not used (we're using func_get_args instead to support overloading), // but it still needs to be defined because it makes no sense to have // this function without argument :) $args = array($data) + func_get_args(); // this method can be overloaded foreach ($args as $data) { if (is_array($data)) { call_user_func_array(array($this, 'add'), $data); continue; } // redefine var $data = (string) $data; // load data $value = $this->load($data); $key = ($data != $value) ? $data : count($this->data); // replace CR linefeeds etc. // @see https://github.com/matthiasmullie/minify/pull/139 $value = str_replace(array("\r\n", "\r"), "\n", $value); // store data $this->data[$key] = $value; } return $this; } /** * Add a file to be minified. * * @param string|string[] $data * * @return static * * @throws IOException */ public function addFile($data /* $data = null, ... */) { // bogus "usage" of parameter $data: scrutinizer warns this variable is // not used (we're using func_get_args instead to support overloading), // but it still needs to be defined because it makes no sense to have // this function without argument :) $args = array($data) + func_get_args(); // this method can be overloaded foreach ($args as $path) { if (is_array($path)) { call_user_func_array(array($this, 'addFile'), $path); continue; } // redefine var $path = (string) $path; // check if we can read the file if (!$this->canImportFile($path)) { throw new IOException('The file "'.$path.'" could not be opened for reading. Check if PHP has enough permissions.'); } $this->add($path); } return $this; } /** * Minify the data & (optionally) saves it to a file. * * @param string[optional] $path Path to write the data to * * @return string The minified data */ public function minify($path = null) { $content = $this->execute($path); // save to path if ($path !== null) { $this->save($content, $path); } return $content; } /** * Minify & gzip the data & (optionally) saves it to a file. * * @param string[optional] $path Path to write the data to * @param int[optional] $level Compression level, from 0 to 9 * * @return string The minified & gzipped data */ public function gzip($path = null, $level = 9) { $content = $this->execute($path); $content = gzencode($content, $level, FORCE_GZIP); // save to path if ($path !== null) { $this->save($content, $path); } return $content; } /** * Minify the data & write it to a CacheItemInterface object. * * @param CacheItemInterface $item Cache item to write the data to * * @return CacheItemInterface Cache item with the minifier data */ public function cache(CacheItemInterface $item) { $content = $this->execute(); $item->set($content); return $item; } /** * Minify the data. * * @param string[optional] $path Path to write the data to * * @return string The minified data */ abstract public function execute($path = null); /** * Load data. * * @param string $data Either a path to a file or the content itself * * @return string */ protected function load($data) { // check if the data is a file if ($this->canImportFile($data)) { $data = file_get_contents($data); // strip BOM, if any if (substr($data, 0, 3) == "\xef\xbb\xbf") { $data = substr($data, 3); } } return $data; } /** * Save to file. * * @param string $content The minified data * @param string $path The path to save the minified data to * * @throws IOException */ protected function save($content, $path) { $handler = $this->openFileForWriting($path); $this->writeToFile($handler, $content); @fclose($handler); } /** * Register a pattern to execute against the source content. * * If $replacement is a string, it must be plain text. Placeholders like $1 or \2 don't work. * If you need that functionality, use a callback instead. * * @param string $pattern PCRE pattern * @param string|callable $replacement Replacement value for matched pattern */ protected function registerPattern($pattern, $replacement = '') { // study the pattern, we'll execute it more than once $pattern .= 'S'; $this->patterns[] = array($pattern, $replacement); } /** * We can't "just" run some regular expressions against JavaScript: it's a * complex language. E.g. having an occurrence of // xyz would be a comment, * unless it's used within a string. Of you could have something that looks * like a 'string', but inside a comment. * The only way to accurately replace these pieces is to traverse the JS one * character at a time and try to find whatever starts first. * * @param string $content The content to replace patterns in * * @return string The (manipulated) content */ protected function replace($content) { $contentLength = strlen($content); $output = ''; $processedOffset = 0; $positions = array_fill(0, count($this->patterns), -1); $matches = array(); while ($processedOffset < $contentLength) { // find first match for all patterns foreach ($this->patterns as $i => $pattern) { list($pattern, $replacement) = $pattern; // we can safely ignore patterns for positions we've unset earlier, // because we know these won't show up anymore if (array_key_exists($i, $positions) == false) { continue; } // no need to re-run matches that are still in the part of the // content that hasn't been processed if ($positions[$i] >= $processedOffset) { continue; } $match = null; if (preg_match($pattern, $content, $match, PREG_OFFSET_CAPTURE, $processedOffset)) { $matches[$i] = $match; // we'll store the match position as well; that way, we // don't have to redo all preg_matches after changing only // the first (we'll still know where those others are) $positions[$i] = $match[0][1]; } else { // if the pattern couldn't be matched, there's no point in // executing it again in later runs on this same content; // ignore this one until we reach end of content unset($matches[$i], $positions[$i]); } } // no more matches to find: everything's been processed, break out if (!$matches) { // output the remaining content $output .= substr($content, $processedOffset); break; } // see which of the patterns actually found the first thing (we'll // only want to execute that one, since we're unsure if what the // other found was not inside what the first found) $matchOffset = min($positions); $firstPattern = array_search($matchOffset, $positions); $match = $matches[$firstPattern]; // execute the pattern that matches earliest in the content string list(, $replacement) = $this->patterns[$firstPattern]; // add the part of the input between $processedOffset and the first match; // that content wasn't matched by anything $output .= substr($content, $processedOffset, $matchOffset - $processedOffset); // add the replacement for the match $output .= $this->executeReplacement($replacement, $match); // advance $processedOffset past the match $processedOffset = $matchOffset + strlen($match[0][0]); } return $output; } /** * If $replacement is a callback, execute it, passing in the match data. * If it's a string, just pass it through. * * @param string|callable $replacement Replacement value * @param array $match Match data, in PREG_OFFSET_CAPTURE form * * @return string */ protected function executeReplacement($replacement, $match) { if (!is_callable($replacement)) { return $replacement; } // convert $match from the PREG_OFFSET_CAPTURE form to the form the callback expects foreach ($match as &$matchItem) { $matchItem = $matchItem[0]; } return $replacement($match); } /** * Strings are a pattern we need to match, in order to ignore potential * code-like content inside them, but we just want all of the string * content to remain untouched. * * This method will replace all string content with simple STRING# * placeholder text, so we've rid all strings from characters that may be * misinterpreted. Original string content will be saved in $this->extracted * and after doing all other minifying, we can restore the original content * via restoreStrings(). * * @param string[optional] $chars * @param string[optional] $placeholderPrefix */ protected function extractStrings($chars = '\'"', $placeholderPrefix = '') { // PHP only supports $this inside anonymous functions since 5.4 $minifier = $this; $callback = function ($match) use ($minifier, $placeholderPrefix) { // check the second index here, because the first always contains a quote if ($match[2] === '') { /* * Empty strings need no placeholder; they can't be confused for * anything else anyway. * But we still needed to match them, for the extraction routine * to skip over this particular string. */ return $match[0]; } $count = count($minifier->extracted); $placeholder = $match[1].$placeholderPrefix.$count.$match[1]; $minifier->extracted[$placeholder] = $match[1].$match[2].$match[1]; return $placeholder; }; /* * The \\ messiness explained: * * Don't count ' or " as end-of-string if it's escaped (has backslash * in front of it) * * Unless... that backslash itself is escaped (another leading slash), * in which case it's no longer escaping the ' or " * * So there can be either no backslash, or an even number * * multiply all of that times 4, to account for the escaping that has * to be done to pass the backslash into the PHP string without it being * considered as escape-char (times 2) and to get it in the regex, * escaped (times 2) */ $this->registerPattern('/(['.$chars.'])(.*?(?<!\\\\)(\\\\\\\\)*+)\\1/s', $callback); } /** * This method will restore all extracted data (strings, regexes) that were * replaced with placeholder text in extract*(). The original content was * saved in $this->extracted. * * @param string $content * * @return string */ protected function restoreExtractedData($content) { if (!$this->extracted) { // nothing was extracted, nothing to restore return $content; } $content = strtr($content, $this->extracted); $this->extracted = array(); return $content; } /** * Check if the path is a regular file and can be read. * * @param string $path * * @return bool */ protected function canImportFile($path) { $parsed = parse_url($path); if ( // file is elsewhere isset($parsed['host']) || // file responds to queries (may change, or need to bypass cache) isset($parsed['query']) ) { return false; } return strlen($path) < PHP_MAXPATHLEN && @is_file($path) && is_readable($path); } /** * Attempts to open file specified by $path for writing. * * @param string $path The path to the file * * @return resource Specifier for the target file * * @throws IOException */ protected function openFileForWriting($path) { if ($path === '' || ($handler = @fopen($path, 'w')) === false) { throw new IOException('The file "'.$path.'" could not be opened for writing. Check if PHP has enough permissions.'); } return $handler; } /** * Attempts to write $content to the file specified by $handler. $path is used for printing exceptions. * * @param resource $handler The resource to write to * @param string $content The content to write * @param string $path The path to the file (for exception printing only) * * @throws IOException */ protected function writeToFile($handler, $content, $path = '') { if ( !is_resource($handler) || ($result = @fwrite($handler, $content)) === false || ($result < strlen($content)) ) { throw new IOException('The file "'.$path.'" could not be written to. Check your disk space and file permissions.'); } } }