Same name in other branches

1. 8.9.x core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php \Drupal\Core\Asset\LibraryDiscoveryParser::buildByExtension()
2. 10 core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php \Drupal\Core\Asset\LibraryDiscoveryParser::buildByExtension()
3. 11.x core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php \Drupal\Core\Asset\LibraryDiscoveryParser::buildByExtension()

Parses and builds up all the libraries information of an extension.

Parameters

string $extension: The name of the extension that registered a library.

Return value

array All library definitions of the passed extension.

Throws

\Drupal\Core\Asset\Exception\IncompleteLibraryDefinitionException Thrown when a library has no js/css/setting.

\UnexpectedValueException Thrown when a js file defines a positive weight.

\UnknownExtensionTypeException Thrown when the extension type is unknown.

\UnknownExtensionException Thrown when the extension is unknown.

\InvalidLibraryFileException Thrown when the library file is invalid.

\InvalidLibrariesOverrideSpecificationException Thrown when a definition refers to a non-existent library.

\Drupal\Core\Asset\Exception\LibraryDefinitionMissingLicenseException Thrown when a library definition has no license information.

\LogicException Thrown when a header key in a library definition is invalid.

File

core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php, line 123

Class

LibraryDiscoveryParser

Parses library files to get extension data.

Namespace

Drupal\Core\Asset

Code

public function buildByExtension($extension) {
    if ($extension === 'core') {
        $path = 'core';
        $extension_type = 'core';
    }
    else {
        if ($this->moduleHandler
            ->moduleExists($extension)) {
            $extension_type = 'module';
        }
        else {
            $extension_type = 'theme';
        }
        $path = $this->extensionPathResolver
            ->getPath($extension_type, $extension);
    }
    $libraries = $this->parseLibraryInfo($extension, $path);
    $libraries = $this->applyLibrariesOverride($libraries, $extension);
    foreach ($libraries as $id => &$library) {
        if (!isset($library['js']) && !isset($library['css']) && !isset($library['drupalSettings']) && !isset($library['dependencies'])) {
            throw new IncompleteLibraryDefinitionException(sprintf("Incomplete library definition for definition '%s' in extension '%s'", $id, $extension));
        }
        $library += [
            'dependencies' => [],
            'js' => [],
            'css' => [],
        ];
        if (isset($library['header']) && !is_bool($library['header'])) {
            throw new \LogicException(sprintf("The 'header' key in the library definition '%s' in extension '%s' is invalid: it must be a boolean.", $id, $extension));
        }
        if (isset($library['version'])) {
            // @todo Retrieve version of a non-core extension.
            if ($library['version'] === 'VERSION') {
                $library['version'] = \Drupal::VERSION;
            }
            elseif (is_string($library['version']) && $library['version'][0] === 'v') {
                $library['version'] = substr($library['version'], 1);
            }
        }
        // If this is a 3rd party library, the license info is required.
        if (isset($library['remote']) && !isset($library['license'])) {
            throw new LibraryDefinitionMissingLicenseException(sprintf("Missing license information in library definition for definition '%s' extension '%s': it has a remote, but no license.", $id, $extension));
        }
        // Assign Drupal's license to libraries that don't have license info.
        if (!isset($library['license'])) {
            $library['license'] = [
                'name' => 'GNU-GPL-2.0-or-later',
                'url' => 'https://www.drupal.org/licensing/faq',
                'gpl-compatible' => TRUE,
            ];
        }
        foreach ([
            'js',
            'css',
        ] as $type) {
            // Prepare (flatten) the SMACSS-categorized definitions.
            // @todo After Asset(ic) changes, retain the definitions as-is and
            //   properly resolve dependencies for all (css) libraries per category,
            //   and only once prior to rendering out an HTML page.
            if ($type == 'css' && !empty($library[$type])) {
                assert(static::validateCssLibrary($library[$type]) < 2, 'CSS files should be specified as key/value pairs, where the values are configuration options. See https://www.drupal.org/node/2274843.');
                assert(static::validateCssLibrary($library[$type]) === 0, 'CSS must be nested under a category. See https://www.drupal.org/node/2274843.');
                foreach ($library[$type] as $category => $files) {
                    $category_weight = 'CSS_' . strtoupper($category);
                    assert(defined($category_weight), 'Invalid CSS category: ' . $category . '. See https://www.drupal.org/node/2274843.');
                    foreach ($files as $source => $options) {
                        if (!isset($options['weight'])) {
                            $options['weight'] = 0;
                        }
                        // Apply the corresponding weight defined by CSS_* constants.
                        $options['weight'] += constant($category_weight);
                        $library[$type][$source] = $options;
                    }
                    unset($library[$type][$category]);
                }
            }
            foreach ($library[$type] as $source => $options) {
                unset($library[$type][$source]);
                // Allow to omit the options hashmap in YAML declarations.
                if (!is_array($options)) {
                    $options = [];
                }
                if ($type == 'js' && isset($options['weight']) && $options['weight'] > 0) {
                    throw new \UnexpectedValueException("The {$extension}/{$id} library defines a positive weight for '{$source}'. Only negative weights are allowed (but should be avoided). Instead of a positive weight, specify accurate dependencies for this library.");
                }
                // Unconditionally apply default groups for the defined asset files.
                // The library system is a dependency management system. Each library
                // properly specifies its dependencies instead of relying on a custom
                // processing order.
                if ($type == 'js') {
                    $options['group'] = JS_LIBRARY;
                }
                elseif ($type == 'css') {
                    $options['group'] = $extension_type == 'theme' ? CSS_AGGREGATE_THEME : CSS_AGGREGATE_DEFAULT;
                }
                // By default, all library assets are files.
                if (!isset($options['type'])) {
                    $options['type'] = 'file';
                }
                if ($options['type'] == 'external') {
                    $options['data'] = $source;
                }
                else {
                    if ($source[0] === '/') {
                        // An absolute path maps to DRUPAL_ROOT / base_path().
                        if ($source[1] !== '/') {
                            $source = substr($source, 1);
                            // Non core provided libraries can be in multiple locations.
                            if (strpos($source, 'libraries/') === 0) {
                                $path_to_source = $this->librariesDirectoryFileFinder
                                    ->find(substr($source, 10));
                                if ($path_to_source) {
                                    $source = $path_to_source;
                                }
                            }
                            $options['data'] = $source;
                        }
                        else {
                            $options['type'] = 'external';
                            $options['data'] = $source;
                        }
                    }
                    elseif ($this->streamWrapperManager
                        ->isValidUri($source)) {
                        $options['data'] = $source;
                    }
                    elseif ($this->isValidUri($source)) {
                        $options['type'] = 'external';
                        $options['data'] = $source;
                    }
                    else {
                        $options['data'] = $path . '/' . $source;
                    }
                }
                if (!isset($library['version'])) {
                    // @todo Get the information from the extension.
                    $options['version'] = -1;
                }
                else {
                    $options['version'] = $library['version'];
                }
                // Set the 'minified' flag on JS file assets, default to FALSE.
                if ($type == 'js' && $options['type'] == 'file') {
                    $options['minified'] = $options['minified'] ?? FALSE;
                }
                $library[$type][] = $options;
            }
        }
    }
    return $libraries;
}

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