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