Raphaël G. Git Repositories - packbundle/blob - Parser/TokenParser.php

   1 <?php declare(strict_types=1);
   2
   3 /*
   4  * This file is part of the Rapsys PackBundle package.
   5  *
   6  * (c) Raphaël Gertz <symfony@rapsys.eu>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Rapsys\PackBundle\Parser;
  13
  14 use Symfony\Component\Asset\PackageInterface;
  15 use Symfony\Component\Filesystem\Exception\IOExceptionInterface;
  16 use Symfony\Component\Filesystem\Filesystem;
  17 use Symfony\Component\HttpKernel\Config\FileLocator;
  18
  19 use Twig\Error\Error;
  20 use Twig\Node\Expression\AssignNameExpression;
  21 use Twig\Node\Node;
  22 use Twig\Node\SetNode;
  23 use Twig\Node\TextNode;
  24 use Twig\Source;
  25 use Twig\Token;
  26 use Twig\TokenParser\AbstractTokenParser;
  27
  28 use Rapsys\PackBundle\RapsysPackBundle;
  29
  30 /**
  31  * {@inheritdoc}
  32  */
  33 class TokenParser extends AbstractTokenParser {
  34         /**
  35          * The stream context instance
  36          */
  37         protected mixed $ctx;
  38
  39         /**
  40          * Constructor
  41          *
  42          * @param FileLocator $locator The FileLocator instance
  43          * @param PackageInterface $package The Assets Package instance
  44          * @param string $token The token name
  45          * @param string $tag The tag name
  46          * @param string $output The default output string
  47          * @param array $filters The default filter array
  48          */
  49         public function __construct(protected FileLocator $locator, protected PackageInterface $package, protected string $token, protected string $tag, protected string $output, protected array $filters) {
  50                 //Set ctx
  51                 $this->ctx = stream_context_create(
  52                         [
  53                                 'http' => [
  54                                         #'header' => ['Referer: https://www.openstreetmap.org/'],
  55                                         'max_redirects' => $_ENV['RAPSYSPACK_REDIRECT'] ?? 20,
  56                                         'timeout' => $_ENV['RAPSYSPACK_TIMEOUT'] ?? (($timeout = ini_get('default_socket_timeout')) !== false && $timeout !== "" ? (float)$timeout : 60),
  57                                         'user_agent' => $_ENV['RAPSYSPACK_AGENT'] ?? (($agent = ini_get('user_agent')) !== false && $agent !== "" ? (string)$agent : RapsysPackBundle::getAlias().'/'.RapsysPackBundle::getVersion())
  58                                 ]
  59                         ]
  60                 );
  61         }
  62
  63         /**
  64          * Get the tag name
  65          *
  66          * @return string This tag name
  67          */
  68         public function getTag(): string {
  69                 return $this->tag;
  70         }
  71
  72         /**
  73          * Parse the token
  74          *
  75          * @xxx Skip filter when debug mode is enabled is not possible
  76          * @xxx This code is only run once when twig cache is enabled
  77          * @xxx Twig cache value is not avaible in container parameters, maybe in twig env ?
  78          *
  79          * @param Token $token The \Twig\Token instance
  80          * @return Node The PackNode
  81          */
  82         public function parse(Token $token): Node {
  83                 //Get parser
  84                 $parser = $this->parser;
  85
  86                 //Get parser stream
  87                 $stream = $this->parser->getStream();
  88
  89                 //Set inputs array
  90                 $inputs = [];
  91
  92                 //Set content
  93                 $content = '';
  94
  95                 //Process the token block until end
  96                 while (!$stream->test(Token::BLOCK_END_TYPE)) {
  97                         //The files to process
  98                         if ($stream->test(Token::STRING_TYPE)) {
  99                                 //'somewhere/somefile.(css,img,js)' 'somewhere/*' '@jquery'
 100                                 $inputs[] = $stream->next()->getValue();
 101                         //The filters token
 102                         } elseif ($stream->test(Token::NAME_TYPE, 'filters')) {
 103                                 //filter='yui_js'
 104                                 $stream->next();
 105                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 106                                 $this->filters = array_merge($this->filters, array_filter(array_map('trim', explode(',', $stream->expect(Token::STRING_TYPE)->getValue()))));
 107                         //The output token
 108                         } elseif ($stream->test(Token::NAME_TYPE, 'output')) {
 109                                 //output='js/packed/*.js' OR output='js/core.js'
 110                                 $stream->next();
 111                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 112                                 $this->output = $stream->expect(Token::STRING_TYPE)->getValue();
 113                         //The token name
 114                         } elseif ($stream->test(Token::NAME_TYPE, 'token')) {
 115                                 //name='core_js'
 116                                 $stream->next();
 117                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 118                                 $this->token = $stream->expect(Token::STRING_TYPE)->getValue();
 119                         //Unexpected token
 120                         } else {
 121                                 $token = $stream->getCurrent();
 122                                 throw new Error(sprintf('Unexpected token "%s" of value "%s"', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $stream->getSourceContext());
 123                         }
 124                 }
 125
 126                 //Process end block
 127                 $stream->expect(Token::BLOCK_END_TYPE);
 128
 129                 //Process body
 130                 $body = $this->parser->subparse([$this, 'testEndTag'], true);
 131
 132                 //Process end block
 133                 $stream->expect(Token::BLOCK_END_TYPE);
 134
 135                 //Replace star with sha1
 136                 if (($pos = strpos($this->output, '*')) !== false) {
 137                         //XXX: assetic use substr(sha1(serialize($inputs).serialize($this->filters).serialize($this->output)), 0, 7)
 138                         $this->output = substr($this->output, 0, $pos).sha1(serialize($inputs).serialize($this->filters)).substr($this->output, $pos + 1);
 139                 }
 140
 141                 //Process inputs
 142                 for($k = 0; $k < count($inputs); $k++) {
 143                         //Deal with generic url
 144                         if (strpos($inputs[$k], '//') === 0) {
 145                                 //Fix url
 146                                 $inputs[$k] = ($_ENV['RAPSYSPACK_SCHEME'] ?? 'https://').substr($inputs[$k], 2);
 147                         //Deal with non url path
 148                         } elseif (strpos($inputs[$k], '://') === false) {
 149                                 //Check if we have a bundle path
 150                                 if ($inputs[$k][0] == '@') {
 151                                         //Resolve it
 152                                         $inputs[$k] = $this->getLocated($inputs[$k], $token->getLine(), $stream->getSourceContext());
 153                                 }
 154
 155                                 //Deal with globs
 156                                 if (strpos($inputs[$k], '*') !== false || (($a = strpos($inputs[$k], '{')) !== false && ($b = strpos($inputs[$k], ',', $a)) !== false && strpos($inputs[$k], '}', $b) !== false)) {
 157                                         //Get replacement
 158                                         $replacement = glob($inputs[$k], GLOB_NOSORT|GLOB_BRACE);
 159
 160                                         //Check that these are working files
 161                                         foreach($replacement as $input) {
 162                                                 //Check that it's a file
 163                                                 if (!is_file($input)) {
 164                                                         throw new Error(sprintf('Input path "%s" from "%s" is not a file', $input, $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 165                                                 }
 166                                         }
 167
 168                                         //Replace with glob path
 169                                         array_splice($inputs, $k, 1, $replacement);
 170
 171                                         //Fix current key
 172                                         $k += count($replacement) - 1;
 173                                 //Check that it's a file
 174                                 } elseif (!is_file($inputs[$k])) {
 175                                         throw new Error(sprintf('Input path "%s" is not a file', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 176                                 }
 177                         }
 178                 }
 179
 180                 //Check inputs
 181                 if (!empty($inputs)) {
 182                         //Retrieve files content
 183                         foreach($inputs as $input) {
 184                                 //Try to retrieve content
 185                                 if (($data = file_get_contents($input, false, $this->ctx)) === false) {
 186                                         throw new Error(sprintf('Unable to retrieve input path "%s"', $input), $token->getLine(), $stream->getSourceContext());
 187                                 }
 188
 189                                 //Append content
 190                                 $content .= $data;
 191                         }
 192                 } else {
 193                         //Trigger error about empty inputs ?
 194                         //XXX: There may be a legitimate case where we want an empty file or an error, feel free to contact the author in such case
 195                         #throw new Error('Empty inputs token', $token->getLine(), $stream->getSourceContext());
 196
 197                         //Send an empty node without inputs
 198                         return new Node();
 199                 }
 200
 201                 //Check filters
 202                 if (!empty($this->filters)) {
 203                         //Apply all filters
 204                         foreach($this->filters as $filter) {
 205                                 //Init args
 206                                 $args = [$stream->getSourceContext(), $token->getLine()];
 207
 208                                 //Check if args is available
 209                                 if (!empty($filter['args'])) {
 210                                         //Append args if provided
 211                                         $args += $filter['args'];
 212                                 }
 213
 214                                 //Init reflection
 215                                 $reflection = new \ReflectionClass($filter['class']);
 216
 217                                 //Set instance args
 218                                 $tool = $reflection->newInstanceArgs($args);
 219
 220                                 //Process content
 221                                 $content = $tool->process($content);
 222
 223                                 //Remove object
 224                                 unset($tool, $reflection);
 225                         }
 226                 } else {
 227                         //Trigger error about empty filters ?
 228                         //XXX: There may be a legitimate case where we want only a merged file or an error, feel free to contact the author in such case
 229                         #throw new Error('Empty filters token', $token->getLine(), $stream->getSourceContext());
 230                 }
 231
 232                 //Retrieve asset uri
 233                 //XXX: this path is the merge of services.assets.path_package.arguments[0] and rapsyspack.output.(css,img,js)
 234                 if (($outputUrl = $this->package->getUrl($this->output)) === false) {
 235                         throw new Error(sprintf('Unable to get url for asset: %s', $this->output), $token->getLine(), $stream->getSourceContext());
 236                 }
 237
 238                 //Check if we have a bundle path
 239                 if ($this->output[0] == '@') {
 240                         //Resolve it
 241                         $this->output = $this->getLocated($this->output, $token->getLine(), $stream->getSourceContext());
 242                 }
 243
 244                 //Get filesystem
 245                 $filesystem = new Filesystem();
 246
 247                 //Create output dir if not present
 248                 if (!is_dir($dir = dirname($this->output))) {
 249                         try {
 250                                 //Create dir
 251                                 //XXX: set as 0775, symfony umask (0022) will reduce rights (0755)
 252                                 $filesystem->mkdir($dir, 0775);
 253                         } catch (IOExceptionInterface $e) {
 254                                 //Throw error
 255                                 throw new Error(sprintf('Output directory "%s" do not exists and unable to create it', $dir), $token->getLine(), $stream->getSourceContext(), $e);
 256                         }
 257                 }
 258
 259                 //Send file content
 260                 try {
 261                         //Write content to file
 262                         //XXX: this call is (maybe) atomic
 263                         //XXX: see https://symfony.com/doc/current/components/filesystem.html#dumpfile
 264                         $filesystem->dumpFile($this->output, $content);
 265                 } catch (IOExceptionInterface $e) {
 266                         //Throw error
 267                         throw new Error(sprintf('Unable to write to: %s', $this->output), $token->getLine(), $stream->getSourceContext(), $e);
 268                 }
 269
 270                 //Set name in context key
 271                 $ref = new AssignNameExpression($this->token, $token->getLine());
 272
 273                 //Set output in context value
 274                 $value = new TextNode($outputUrl, $token->getLine());
 275
 276                 //Send body with context set
 277                 return new Node([
 278                         //This define name in twig template by prepending $context['<name>'] = '<output>';
 279                         new SetNode(true, $ref, $value, $token->getLine(), $this->getTag()),
 280                         //The tag captured body
 281                         $body
 282                 ]);
 283         }
 284
 285         /**
 286          * Test for tag end
 287          *
 288          * @param Token $token The \Twig\Token instance
 289          * @return bool The token end test result
 290          */
 291         public function testEndTag(Token $token): bool {
 292                 return $token->test(['end'.$this->getTag()]);
 293         }
 294
 295         /**
 296          * Get path from bundled file
 297          *
 298          * @see https://symfony.com/doc/current/bundles.html#overridding-the-bundle-directory-structure
 299          *
 300          * @param string $file The bundled file path
 301          * @param int $lineno The template line where the error occurred
 302          * @param Source $source The source context where the error occurred
 303          * @param Exception $prev The previous exception
 304          * @return string The resolved file path
 305          */
 306         public function getLocated(string $file, int $lineno = 0, ?Source $source = null, ?\Exception $prev = null): string {
 307                 /*TODO: add a @jquery magic feature ?
 308                 if ($file == '@jquery') {
 309                         #header('Content-Type: text/plain');
 310                         #var_dump($inputs);
 311                         #exit;
 312                         return $this->config['jquery'];
 313                 }*/
 314
 315                 //Check that we have a / separator between bundle name and path
 316                 if (($pos = strpos($file, '/')) === false) {
 317                         throw new Error(sprintf('Invalid path "%s"', $file), $lineno, $source);
 318                 }
 319
 320                 //Set bundle
 321                 $bundle = substr($file, 0, $pos);
 322
 323                 //Set path
 324                 $path = substr($file, $pos + 1);
 325
 326                 //Check for bundle suffix presence
 327                 //XXX: use "bundle templates automatic namespace" mimicked behaviour to find intended bundle and/or path
 328                 //XXX: see https://symfony.com/doc/4.3/templates.html#bundle-templates
 329                 if (strlen($bundle) < strlen('Bundle') || substr($bundle, -strlen('Bundle')) !== 'Bundle') {
 330                         //Append Bundle in an attempt to fix it's naming for locator
 331                         $bundle .= 'Bundle';
 332
 333                         //Check for public resource prefix presence
 334                         if (strlen($path) < strlen('Resources/public') || substr($path, 0, strlen('Resources/public')) != 'Resources/public') {
 335                                 //Prepend standard public path
 336                                 $path = 'Resources/public/'.$path;
 337                         }
 338                 }
 339
 340                 //Resolve bundle prefix
 341                 try {
 342                         $prefix = $this->locator->locate($bundle);
 343                 //Catch bundle does not exist or is not enabled exception
 344                 } catch(\InvalidArgumentException $e) {
 345                         //Fix lowercase first bundle character
 346                         if ($bundle[1] > 'Z' || $bundle[1] < 'A') {
 347                                 $bundle[1] = strtoupper($bundle[1]);
 348                         }
 349
 350                         //Detect double bundle suffix
 351                         if (strlen($bundle) > strlen('_bundleBundle') && substr($bundle, -strlen('_bundleBundle')) == '_bundleBundle') {
 352                                 //Strip extra bundle
 353                                 $bundle = substr($bundle, 0, -strlen('Bundle'));
 354                         }
 355
 356                         //Convert snake case in camel case
 357                         if (strpos($bundle, '_') !== false) {
 358                                 //Fix every first character following a _
 359                                 while(($cur = strpos($bundle, '_')) !== false) {
 360                                         $bundle = substr($bundle, 0, $cur).ucfirst(substr($bundle, $cur + 1));
 361                                 }
 362                         }
 363
 364                         //Resolve fixed bundle prefix
 365                         try {
 366                                 $prefix = $this->locator->locate($bundle);
 367                                 //Catch bundle does not exist or is not enabled exception again
 368                         } catch(\InvalidArgumentException $e) {
 369                                 //Bail out as bundle or path is invalid and we have no way to know what was meant
 370                                 throw new Error(sprintf('Invalid bundle name "%s" in path "%s". Maybe you meant "%s"', substr($file, 1, $pos - 1), $file, $bundle.'/'.$path), $lineno, $source, $e);
 371                         }
 372                 }
 373
 374                 //Return solved bundle prefix and path
 375                 return $prefix.$path;
 376         }
 377 }