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<?php |
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namespace Webrouse\AssetMacro; |
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use Latte; |
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use Latte\Macros\MacroSet; |
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use Nette\Utils\Json; |
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use Nette\Utils\Strings; |
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use Nette\Utils\Validators; |
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use Webrouse\AssetMacro\Exceptions\AssetNotFoundException; |
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use Webrouse\AssetMacro\Exceptions\AssetVersionNotFound; |
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use Webrouse\AssetMacro\Exceptions\DirNotFoundException; |
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use Webrouse\AssetMacro\Exceptions\ManifestNotFoundException; |
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use Webrouse\AssetMacro\Exceptions\InvalidVariableException; |
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class AssetMacro extends MacroSet |
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{ |
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const REV_MANIFEST_AUTO = NULL; |
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const CONFIG_PROVIDER = 'assetMacroConfig'; |
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/** |
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* @param Latte\Compiler $compiler |
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*/ |
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public static function install(Latte\Compiler $compiler) |
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{ |
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$me = new self($compiler); |
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$me->addMacro('asset', [$me, 'macroAsset']); |
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} |
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/** |
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* @param Latte\MacroNode $node |
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* @param Latte\PhpWriter $writer |
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* @return string |
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* @throws Latte\CompileException |
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*/ |
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public function macroAsset(Latte\MacroNode $node, Latte\PhpWriter $writer) |
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{ |
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$args = trim($node->args); |
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// Validate arguments count |
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$argsCount = $args === '' ? 0 : (substr_count($args, ',') + 1); |
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if ($argsCount === 0) { |
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throw new Latte\CompileException("Asset macro requires at least one argument."); |
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} |
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if ($argsCount > 3) { |
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throw new Latte\CompileException("Asset macro must have no more than 3 arguments."); |
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} |
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return $writer->write( |
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'echo %escape(' . self::class . '::generateAssetPath(' . |
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'%node.word, %node.array, $basePath, $template->global->' . self::CONFIG_PROVIDER . '))'); |
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} |
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/** |
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* @param string $path |
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* @param array $args |
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* @param string $basePath |
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* @param array $config |
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* @return string |
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*/ |
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public static function generateAssetPath($path, array $args, $basePath, $config) |
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{ |
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list($relativePath, $format, $needed) = self::processArguments($path, $args); |
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list($relativePath, $absolutePath, $wwwDir) = self::processPaths($relativePath, $needed, $config); |
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if ($absolutePath === FALSE) { |
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return ''; |
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} |
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// Get asset version |
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try { |
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$versions = $config['revManifest'] ?: |
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self::autodetectVersions($absolutePath, $wwwDir, $config['autodetect']); |
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$version = self::getAssetVersion($versions, $absolutePath, $needed, $config); |
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} catch(ManifestNotFoundException $e) { |
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self::throwError($e, $config['missingManifest'], $needed); |
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$version = 'unknown'; |
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} |
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return self::formatOutput($format, $basePath, $relativePath, $version); |
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} |
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/** |
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* Generate output according given format |
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* @param string $format |
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* @param string $basePath |
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* @param string $relativePath |
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* @param string $version |
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* @return string |
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*/ |
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private static function formatOutput($format, $basePath, $relativePath, $version) |
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{ |
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return Strings::replace($format, |
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'/%([^%]+)%/', |
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function ($matches) use ($basePath, $format, $relativePath, $version) { |
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switch ($matches[1]) { |
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case 'url': |
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return sprintf("%s/%s?v=%s", $basePath, $relativePath, $version); |
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case 'path': |
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return sprintf("%s/%s", $basePath, $relativePath); |
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case 'version': |
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return $version; |
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case 'basePath': |
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return $basePath; |
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case 'dir': |
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return dirname($relativePath); |
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case 'file': |
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return basename($relativePath); |
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default: |
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$msg = sprintf( |
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"Asset macro: Invalid variable '%s' in format '%s'. " . |
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"Use one of allowed variables: %%url%%, %%version%%, %%basePath%%, %%dir%%, %%file%%.", |
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$matches[1], |
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$format |
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); |
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throw new InvalidVariableException($msg); |
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} |
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}); |
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} |
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/** |
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* @param string $path |
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* @param array $args |
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* @return array |
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*/ |
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private static function processArguments($path, array $args) |
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{ |
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$format = isset($args['format']) ? $args['format'] : (isset($args[0]) ? $args[0] : '%url%'); |
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$needed = isset($args['needed']) ? $args['needed'] : (isset($args[1]) ? $args[1] : TRUE); |
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Validators::assert($path, 'string', 'path'); |
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Validators::assert($format, 'string', 'format'); |
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Validators::assert($needed, 'bool', 'needed'); |
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return [$path, $format, $needed]; |
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} |
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/** |
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* @param $relativePath |
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* @param $needed |
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* @param array $config |
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* @return array |
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*/ |
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private static function processPaths($relativePath, $needed, array $config) |
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{ |
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$relativePath = ltrim($relativePath, '\\/'); |
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if (($wwwDir = realpath($config['wwwDir'])) === FALSE) { |
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throw new DirNotFoundException(sprintf("Www dir '%s' not found.", $config['wwwDir'])); |
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} |
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if (($absolutePath = realpath($wwwDir . DIRECTORY_SEPARATOR . $relativePath)) === FALSE) { |
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$msg = sprintf("Asset '%s' not found.", $relativePath); |
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self::throwError(new AssetNotFoundException($msg), $config['missingAsset'], $needed); |
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} |
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return [$relativePath, $absolutePath, $wwwDir]; |
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} |
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/** |
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* @param mixed $assetsVersions |
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* @param string $absolutePath |
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* @param bool $needed |
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* @param array $config |
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* @return mixed|string |
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*/ |
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private static function getAssetVersion($assetsVersions, $absolutePath, $needed, array $config) |
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{ |
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// Versions can be array or path to JSON file |
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if ( ! is_array($assetsVersions)) { |
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if ( ! file_exists($assetsVersions)) { |
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throw new ManifestNotFoundException(sprintf("Revision manifest file not found: '%s'.", $assetsVersions)); |
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} |
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$assetsVersions = Json::decode(file_get_contents($assetsVersions), Json::FORCE_ARRAY); |
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} |
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foreach ($assetsVersions as $path => $hash) { |
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// Test if path from version file (may be relative) is in asset path |
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if (Strings::endsWith($absolutePath, $path)) { |
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return $hash; |
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} |
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} |
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$msg = sprintf("Asset macro: version of asset '%s' not found.", $absolutePath); |
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self::throwError(new AssetVersionNotFound($msg), $config['missingVersion'], $needed); |
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return 'unknown'; |
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} |
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/** |
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* @param $absolutePath |
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* @param $wwwDir |
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* @param array $paths |
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* @return mixed|string |
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*/ |
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private static function autodetectVersions($absolutePath, $wwwDir, array $paths) |
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{ |
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// Iterate over parent directories (stop in www dir) |
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$dir = dirname($absolutePath); |
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while (Strings::startsWith($dir, $wwwDir)) { |
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foreach ($paths as $path) { |
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$path = $dir . DIRECTORY_SEPARATOR . $path; |
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if (file_exists($path)) { |
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return $path; |
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} |
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} |
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// Get parent directory |
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$dir = dirname($dir); |
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} |
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throw new ManifestNotFoundException( |
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sprintf("Rev. manifest not found in expected paths: (%s)." . |
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"Create one of these files or set 'revManifest' in configuration.", |
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implode(', ', $paths) |
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) |
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); |
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} |
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/** |
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* @param \Exception $e |
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* @param string $action |
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* @param bool $needed |
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* @throws \Exception |
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*/ |
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private static function throwError(\Exception $e, $action = 'exception', $needed = TRUE) { |
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if ($needed) { |
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if ($action === 'exception') { |
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throw $e; |
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} elseif ($action === 'notice') { |
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trigger_error($e->getMessage(), E_USER_NOTICE); |
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} |
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} |
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} |
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} |
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webrouse /
n-asset-macro
