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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Deploy\Package\Processor\PostProcessor;
use Magento\Deploy\Console\DeployStaticOptions;
use Magento\Deploy\Package\Package;
use Magento\Deploy\Package\PackageFile;
use Magento\Deploy\Package\Processor\ProcessorInterface;
use Magento\Framework\App\Filesystem\DirectoryList;
use Magento\Framework\Exception\NotFoundException;
use Magento\Framework\Filesystem;
use Magento\Framework\View\Url\CssResolver;
use Magento\Framework\View\Asset\Minification;
/**
* Post-processor scans through all CSS files and correct misleading URLs
*
* Such URLs may pre-exist in CSS files, but can appear when file was copied from one of the ancestors,
* so all relative URLs need to be adjusted
*/
class CssUrls implements ProcessorInterface
{
/**
* Static content directory writable interface
*
* @var Filesystem\Directory\WriteInterface
*/
private $staticDir;
/**
* Helper class for static files minification related processes
*
* @var Minification
*/
private $minification;
/**
* Deployment procedure options
*
* @var array
*/
private $options = [];
/**
* CssUrls constructor
*
* @param Filesystem $filesystem
* @param Minification $minification
*/
public function __construct(Filesystem $filesystem, Minification $minification)
{
$this->staticDir = $filesystem->getDirectoryWrite(DirectoryList::STATIC_VIEW);
$this->minification = $minification;
}
/**
* @inheritdoc
*/
public function process(Package $package, array $options)
{
$this->options = $options;
if ($this->options[DeployStaticOptions::NO_CSS] === true) {
return false;
}
$urlMap = [];
/** @var PackageFile $file */
foreach (array_keys($package->getMap()) as $fileId) {
$filePath = str_replace(\Magento\Framework\View\Asset\Repository::FILE_ID_SEPARATOR, '/', $fileId);
// phpcs:ignore Magento2.Functions.DiscouragedFunction
if (strtolower(pathinfo($fileId, PATHINFO_EXTENSION)) == 'css') {
$urlMap = $this->parseCss(
$urlMap,
$filePath,
$package->getPath(),
$this->staticDir->readFile(
$this->minification->addMinifiedSign($package->getPath() . '/' . $filePath)
),
$package
);
}
}
$this->updateCssUrls($urlMap);
return true;
}
/**
* Collect all URLs
*
* @param array $urlMap
* @param string $cssFilePath
* @param string $packagePath
* @param string $cssContent
* @param Package $package
* @return array
* @throws NotFoundException
*/
private function parseCss(array $urlMap, $cssFilePath, $packagePath, $cssContent, Package $package)
{
$cssFilePath = $this->minification->addMinifiedSign($cssFilePath);
// phpcs:ignore Magento2.Functions.DiscouragedFunction
$cssFileBasePath = pathinfo($cssFilePath, PATHINFO_DIRNAME);
$urls = $this->getCssUrls($cssContent);
foreach ($urls as $url) {
if ($this->isExternalUrl($url)) {
$urlMap[$url][] = [
'filePath' => $this->minification->addMinifiedSign($packagePath . '/' . $cssFilePath),
'replace' => $this->getValidExternalUrl($url, $package)
];
continue;
}
$filePath = $this->getNormalizedFilePath($packagePath . '/' . $cssFileBasePath . '/' . $url);
if ($this->staticDir->isReadable($this->minification->addMinifiedSign($filePath))) {
continue;
}
$lookupFileId = $this->getNormalizedFilePath($cssFileBasePath . '/' . $url);
/** @var PackageFile $matchedFile */
$matchedFile = $this->getFileFromParent($lookupFileId, $package);
if ($matchedFile) {
$urlMap[$url][] = [
'filePath' => $this->minification->addMinifiedSign($packagePath . '/' . $cssFilePath),
'replace' => '../../../../' // base path is always of four chunks size
. str_repeat('../', count(explode('/', $cssFileBasePath)))
. $this->minification->addMinifiedSign($matchedFile->getDeployedFilePath())
];
} else {
$filePathInBase = $package->getArea() .
'/' . Package::BASE_THEME .
'/' . $package->getLocale() .
'/' . $lookupFileId;
if ($this->staticDir->isReadable($this->minification->addMinifiedSign($filePathInBase))) {
$urlMap[$url][] = [
'filePath' => $this->minification->addMinifiedSign($packagePath . '/' . $cssFilePath),
'replace' => str_repeat('../', count(explode('/', $cssFileBasePath)) + 4)
. $this->minification->addMinifiedSign($filePathInBase),
];
}
}
}
return $urlMap;
}
/**
* Replace relative URLs in CSS files
*
* @param array $urlMap
* @return void
*/
private function updateCssUrls(array $urlMap)
{
foreach ($urlMap as $ref => $targetFiles) {
foreach ($targetFiles as $matchedFileData) {
$filePath = $matchedFileData['filePath'];
$oldCss = $this->staticDir->readFile($filePath);
$newCss = str_replace($ref, $matchedFileData['replace'] ?? '', $oldCss);
if ($oldCss !== $newCss) {
$this->staticDir->writeFile($filePath, $newCss);
}
}
}
}
/**
* Parse css and return all urls
*
* @param string $cssContent
* @return array
*/
private function getCssUrls($cssContent)
{
$urls = [];
preg_match_all(CssResolver::REGEX_CSS_RELATIVE_URLS, $cssContent, $matches);
if (!empty($matches[0]) && !empty($matches[1])) {
$urls = array_combine($matches[0], $matches[1]);
}
return $urls;
}
/**
* Remove “..” segments from URL
*
* @param string $url
* @return string
*/
private function getNormalizedFilePath($url)
{
$urlParts = explode('/', $url);
$result = [];
if (preg_match('/{{.*}}/', $url)) {
foreach (array_reverse($urlParts) as $index => $part) {
if (!preg_match('/^{{.*}}$/', $part)) {
$result[] = $part;
} else {
break;
}
}
return implode('/', array_reverse($result));
}
$prevIndex = 0;
foreach ($urlParts as $index => $part) {
if ($part == '..') {
unset($urlParts[$index]);
unset($urlParts[$prevIndex]);
--$prevIndex;
} else {
$prevIndex = $index;
}
}
return implode('/', $urlParts);
}
/**
* Fulfil placeholders in external URL with appropriate area, theme and locale values
*
* @param string $url
* @param Package $package
* @return string
*/
private function getValidExternalUrl($url, Package $package)
{
$url = $this->minification->removeMinifiedSign($url);
$filePath = $this->getNormalizedFilePath($url);
if (!$this->isFileExistsInPackage($filePath, $package)) {
/** @var PackageFile $matchedFile */
$matchedFile = $this->getFileFromParent($filePath, $package);
$package = $matchedFile->getPackage();
}
return preg_replace(
'/(?<=}})(.*)(?=\/{{)/',
$package->getArea() . '/' . $package->getTheme(),
$this->minification->addMinifiedSign($url)
);
}
/**
* Find file in ancestors by the same relative path
*
* @param string $fileName
* @param Package $currentPackage
* @return PackageFile|null
*/
private function getFileFromParent($fileName, Package $currentPackage)
{
/** @var Package $package */
foreach (array_reverse($currentPackage->getParentPackages()) as $package) {
foreach ($package->getFiles() as $file) {
if ($file->getDeployedFileName() === $fileName) {
return $file;
}
}
}
return null;
}
/**
* Check if URL has placeholders, used for referencing to resources with full URL
*
* @param string $url
* @return bool
*/
private function isExternalUrl($url)
{
return preg_match('/{{.*}}/', $url);
}
/**
* Check if file of the same deployed path exists in package
*
* @param string $filePath
* @param Package $package
* @return bool
*/
private function isFileExistsInPackage($filePath, Package $package)
{
/** @var PackageFile $file */
foreach ($package->getFiles() as $file) {
if ($file->getDeployedFileName() === $filePath) {
return true;
}
}
return false;
}
}