Raphaël G. Git Repositories - packbundle/blob - Twig/PackTokenParser.php

   1 <?php
   2
   3 namespace Rapsys\PackBundle\Twig;
   4
   5 use Symfony\Component\Asset\PackageInterface;
   6 use Symfony\Component\Filesystem\Exception\IOExceptionInterface;
   7 use Symfony\Component\Filesystem\Filesystem;
   8 use Symfony\Component\HttpKernel\Config\FileLocator;
   9 use Twig\Error\Error;
  10 use Twig\Node\Expression\AssignNameExpression;
  11 use Twig\Node\Node;
  12 use Twig\Node\SetNode;
  13 use Twig\Node\TextNode;
  14 use Twig\Source;
  15 use Twig\Token;
  16 use Twig\TokenParser\AbstractTokenParser;
  17
  18 class PackTokenParser extends AbstractTokenParser {
  19         ///The tag name
  20         protected $tag;
  21
  22         /**
  23          * Constructor
  24          *
  25          * @param FileLocator      locator The FileLocator instance
  26          * @param PackageInterface package The Assets Package instance
  27          * @param array            config  The config path
  28          * @param string           tag     The tag name
  29          * @param string           output  The default output string
  30          * @param array            filters The default filters array
  31          */
  32         public function __construct(FileLocator $locator, PackageInterface $package, $config, $tag, $output, $filters) {
  33                 //Save locator
  34                 $this->locator = $locator;
  35
  36                 //Save assets package
  37                 $this->package = $package;
  38
  39                 //Set name
  40                 $this->name = $config['name'];
  41
  42                 //Set scheme
  43                 $this->scheme = $config['scheme'];
  44
  45                 //Set timeout
  46                 $this->timeout = $config['timeout'];
  47
  48                 //Set agent
  49                 $this->agent = $config['agent'];
  50
  51                 //Set redirect
  52                 $this->redirect = $config['redirect'];
  53
  54                 //Set tag
  55                 $this->tag = $tag;
  56
  57                 //Set output
  58                 $this->output = $output;
  59
  60                 //Set filters
  61                 $this->filters = $filters;
  62         }
  63
  64         /**
  65          * Get the tag name
  66          *
  67          * @return string This tag name
  68          */
  69         public function getTag() {
  70                 return $this->tag;
  71         }
  72
  73         /**
  74          * Parse the token
  75          *
  76          * @param Token token The \Twig\Token instance
  77          *
  78          * @return Node The PackNode
  79          *
  80          * @todo see if we can't add a debug mode behaviour
  81          *
  82          * If twig.debug or env=dev (or rapsys_pack.config.debug?) is set, it should be possible to loop on each input
  83          * and process the captured body without applying requested filter.
  84          *
  85          * @todo list:
  86          * - detect debug mode
  87          * - retrieve fixe link from input s%@(Name)Bundle/Resources/public(/somewhere/file.ext)%/bundles/\L\1\E\2%
  88          * - for each inputs:
  89          *   - generate a set asset_url=x
  90          *   - generate a body
  91          */
  92         public function parse(Token $token) {
  93                 $parser = $this->parser;
  94                 $stream = $this->parser->getStream();
  95
  96                 $inputs = [];
  97                 $name = $this->name;
  98                 $output = $this->output;
  99                 $filters = $this->filters;
 100
 101                 $content = '';
 102
 103                 //Process the token block until end
 104                 while (!$stream->test(Token::BLOCK_END_TYPE)) {
 105                         //The files to process
 106                         if ($stream->test(Token::STRING_TYPE)) {
 107                                 //'somewhere/somefile.(css,img,js)' 'somewhere/*' '@jquery'
 108                                 $inputs[] = $stream->next()->getValue();
 109                         //The filters token
 110                         } elseif ($stream->test(Token::NAME_TYPE, 'filters')) {
 111                                 //filter='yui_js'
 112                                 $stream->next();
 113                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 114                                 $filters = array_merge($filters, array_filter(array_map('trim', explode(',', $stream->expect(Token::STRING_TYPE)->getValue()))));
 115                         //The output token
 116                         } elseif ($stream->test(Token::NAME_TYPE, 'output')) {
 117                                 //output='js/packed/*.js' OR output='js/core.js'
 118                                 $stream->next();
 119                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 120                                 $output = $stream->expect(Token::STRING_TYPE)->getValue();
 121                         //The name token
 122                         } elseif ($stream->test(Token::NAME_TYPE, 'name')) {
 123                                 //name='core_js'
 124                                 $stream->next();
 125                                 $stream->expect(Token::OPERATOR_TYPE, '=');
 126                                 $name = $stream->expect(Token::STRING_TYPE)->getValue();
 127                         //Unexpected token
 128                         } else {
 129                                 $token = $stream->getCurrent();
 130                                 throw new Error(sprintf('Unexpected token "%s" of value "%s"', Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $stream->getSourceContext());
 131                         }
 132                 }
 133
 134                 //Process end block
 135                 $stream->expect(Token::BLOCK_END_TYPE);
 136
 137                 //Process body
 138                 $body = $this->parser->subparse([$this, 'testEndTag'], true);
 139
 140                 //Process end block
 141                 $stream->expect(Token::BLOCK_END_TYPE);
 142
 143                 //TODO: debug mode should be inserted here before the output variable is rewritten
 144
 145                 //Replace star with sha1
 146                 if (($pos = strpos($output, '*')) !== false) {
 147                         //XXX: assetic use substr(sha1(serialize($inputs).serialize($filters).serialize($options)), 0, 7)
 148                         $output = substr($output, 0, $pos).sha1(serialize($inputs).serialize($filters)).substr($output, $pos + 1);
 149                 }
 150
 151                 //Process inputs
 152                 for($k = 0; $k < count($inputs); $k++) {
 153                         //Deal with generic url
 154                         if (strpos($inputs[$k], '//') === 0) {
 155                                 //Fix url
 156                                 $inputs[$k] = $this->scheme.substr($inputs[$k], 2);
 157                         //Deal with non url path
 158                         } elseif (strpos($inputs[$k], '://') === false) {
 159                                 //Check if we have a bundle path
 160                                 if ($inputs[$k][0] == '@') {
 161                                         //Resolve it
 162                                         $inputs[$k] = $this->getLocated($inputs[$k], $token->getLine(), $stream->getSourceContext());
 163                                 }
 164
 165                                 //Deal with globs
 166                                 if (strpos($inputs[$k], '*') !== false || (($a = strpos($inputs[$k], '{')) !== false && ($b = strpos($inputs[$k], ',', $a)) !== false && strpos($inputs[$k], '}', $b) !== false)) {
 167                                         //Get replacement
 168                                         $replacement = glob($inputs[$k], GLOB_NOSORT|GLOB_BRACE);
 169                                         //Check that these are working files
 170                                         foreach($replacement as $input) {
 171                                                 //Check that it's a file
 172                                                 if (!is_file($input)) {
 173                                                         throw new Error(sprintf('Input path "%s" from "%s" is not a file', $input, $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 174                                                 }
 175                                         }
 176                                         //Replace with glob path
 177                                         array_splice($inputs, $k, 1, $replacement);
 178                                         //Fix current key
 179                                         $k += count($replacement) - 1;
 180                                 //Check that it's a file
 181                                 } elseif (!is_file($inputs[$k])) {
 182                                         throw new Error(sprintf('Input path "%s" is not a file', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 183                                 }
 184                         }
 185                 }
 186
 187                 //Init context
 188                 $ctx = stream_context_create(
 189                         [
 190                                 'http' => [
 191                                         'timeout' => $this->timeout,
 192                                         'user_agent' => $this->agent,
 193                                         'redirect' => $this->redirect,
 194                                 ]
 195                         ]
 196                 );
 197
 198                 //Check inputs
 199                 if (!empty($inputs)) {
 200                         //Retrieve files content
 201                         foreach($inputs as $input) {
 202                                 //Try to retrieve content
 203                                 if (($data = file_get_contents($input, false, $ctx)) === false) {
 204                                         throw new Error(sprintf('Unable to retrieve input path "%s"', $input), $token->getLine(), $stream->getSourceContext());
 205                                 }
 206                                 //Append content
 207                                 $content .= $data;
 208                         }
 209                 } else {
 210                         //Trigger error about empty inputs ?
 211                         //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
 212                         #throw new Error('Empty inputs token', $token->getLine(), $stream->getSourceContext());
 213
 214                         //Send an empty node without inputs
 215                         return new Node();
 216                 }
 217
 218                 //Check filters
 219                 if (!empty($filters)) {
 220                         //Apply all filters
 221                         foreach($filters as $filter) {
 222                                 //Init args
 223                                 $args = [$stream->getSourceContext(), $token->getLine()];
 224                                 //Check if args is available
 225                                 if (!empty($filter['args'])) {
 226                                         //Append args if provided
 227                                         $args += $filter['args'];
 228                                 }
 229                                 //Init reflection
 230                                 $reflection = new \ReflectionClass($filter['class']);
 231                                 //Set instance args
 232                                 $tool = $reflection->newInstanceArgs($args);
 233                                 //Process content
 234                                 $content = $tool->process($content);
 235                                 //Remove object
 236                                 unset($tool, $reflection);
 237                         }
 238                 } else {
 239                         //Trigger error about empty filters ?
 240                         //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
 241                         #throw new Error('Empty filters token', $token->getLine(), $stream->getSourceContext());
 242                 }
 243
 244                 //Retrieve asset uri
 245                 //XXX: this path is the merge of services.assets.path_package.arguments[0] and rapsys_pack.output.(css,img,js)
 246                 if (($outputUrl = $this->package->getUrl($output)) === false) {
 247                         throw new Error(sprintf('Unable to get url for asset: %s', $output), $token->getLine(), $stream->getSourceContext());
 248                 }
 249
 250                 //Check if we have a bundle path
 251                 if ($output[0] == '@') {
 252                         //Resolve it
 253                         $output = $this->getLocated($output, $token->getLine(), $stream->getSourceContext());
 254                 }
 255
 256                 //Get filesystem
 257                 $filesystem = new Filesystem();
 258
 259                 //Create output dir if not present
 260                 if (!is_dir($dir = dirname($output))) {
 261                         try {
 262                                 //Create dir
 263                                 //XXX: set as 0775, symfony umask (0022) will reduce rights (0755)
 264                             $filesystem->mkdir($dir, 0775);
 265                         } catch (IOExceptionInterface $e) {
 266                                 //Throw error
 267                                 throw new Error(sprintf('Output directory "%s" do not exists and unable to create it', $dir), $token->getLine(), $stream->getSourceContext(), $e);
 268                         }
 269                 }
 270
 271                 //Send file content
 272                 try {
 273                         //Write content to file
 274                         //XXX: this call is (maybe) atomic
 275                         //XXX: see https://symfony.com/doc/current/components/filesystem.html#dumpfile
 276                         $filesystem->dumpFile($output, $content);
 277                 } catch (IOExceptionInterface $e) {
 278                         //Throw error
 279                         throw new Error(sprintf('Unable to write to: %s', $output), $token->getLine(), $stream->getSourceContext(), $e);
 280                 }
 281
 282                 //Set name in context key
 283                 $ref = new AssignNameExpression($name, $token->getLine());
 284
 285                 //Set output in context value
 286                 $value = new TextNode($outputUrl, $token->getLine());
 287
 288                 //Send body with context set
 289                 return new Node([
 290                         //This define name in twig template by prepending $context['<name>'] = '<output>';
 291                         new SetNode(true, $ref, $value, $token->getLine(), $this->getTag()),
 292                         //The tag captured body
 293                         $body
 294                 ]);
 295         }
 296
 297         /**
 298          * Test for tag end
 299          *
 300          * @param Token token The \Twig\Token instance
 301          *
 302          * @return bool
 303          */
 304         public function testEndTag(Token $token) {
 305                 return $token->test(['end'.$this->getTag()]);
 306         }
 307
 308         /**
 309          * Get path from bundled file
 310          *
 311          * @param string     file   The bundled file path
 312          * @param int        lineno The template line where the error occurred
 313          * @param Source     source The source context where the error occurred
 314          * @param \Exception prev   The previous exception
 315          *
 316          * @return string The resolved file path
 317          *
 318          * @todo Try retrive public dir from the member function BundleNameBundle::getPublicDir() return value ?
 319          * @xxx see https://symfony.com/doc/current/bundles.html#overridding-the-bundle-directory-structure
 320          */
 321         public function getLocated($file, int $lineno = 0, Source $source = null, \Exception $prev = null) {
 322                 /*TODO: add a @jquery magic feature ?
 323                 if ($file == '@jquery') {
 324                         #header('Content-Type: text/plain');
 325                         #var_dump($inputs);
 326                         #exit;
 327                         return $this->config['jquery'];
 328                 }*/
 329
 330                 //Check that we have a / separator between bundle name and path
 331                 if (($pos = strpos($file, '/')) === false) {
 332                         throw new Error(sprintf('Invalid path "%s"', $file), $token->getLine(), $stream->getSourceContext());
 333                 }
 334
 335                 //Set bundle
 336                 $bundle = substr($file, 0, $pos);
 337
 338                 //Set path
 339                 $path = substr($file, $pos + 1);
 340
 341                 //Check for bundle suffix presence
 342                 //XXX: use "bundle templates automatic namespace" mimicked behaviour to find intended bundle and/or path
 343                 //XXX: see https://symfony.com/doc/4.3/templates.html#bundle-templates
 344                 if (strlen($bundle) < strlen('Bundle') || substr($bundle, -strlen('Bundle')) !== 'Bundle') {
 345                         //Append Bundle in an attempt to fix it's naming for locator
 346                         $bundle .= 'Bundle';
 347
 348                         //Check for public resource prefix presence
 349                         if (strlen($path) < strlen('Resources/public') || substr($path, 0, strlen('Resources/public')) != 'Resources/public') {
 350                                 //Prepend standard public path
 351                                 $path = 'Resources/public/'.$path;
 352                         }
 353                 }
 354
 355                 //Resolve bundle prefix
 356                 try {
 357                         $prefix = $this->locator->locate($bundle);
 358                         //Catch bundle does not exist or is not enabled exception
 359                 } catch(\InvalidArgumentException $e) {
 360                         //Fix lowercase first bundle character
 361                         if ($bundle[1] > 'Z' || $bundle[1] < 'A') {
 362                                 $bundle[1] = strtoupper($bundle[1]);
 363                         }
 364
 365                         //Detect double bundle suffix
 366                         if (strlen($bundle) > strlen('_bundleBundle') && substr($bundle, -strlen('_bundleBundle')) == '_bundleBundle') {
 367                                 //Strip extra bundle
 368                                 $bundle = substr($bundle, 0, -strlen('Bundle'));
 369                         }
 370
 371                         //Convert snake case in camel case
 372                         if (strpos($bundle, '_') !== false) {
 373                                 //Fix every first character following a _
 374                                 while(($cur = strpos($bundle, '_')) !== false) {
 375                                         $bundle = substr($bundle, 0, $cur).ucfirst(substr($bundle, $cur + 1));
 376                                 }
 377                         }
 378
 379                         //Resolve fixed bundle prefix
 380                         try {
 381                                 $prefix = $this->locator->locate($bundle);
 382                                 //Catch bundle does not exist or is not enabled exception again
 383                         } catch(\InvalidArgumentException $e) {
 384                                 //Bail out as bundle or path is invalid and we have no way to know what was meant
 385                                 throw new Error(sprintf('Invalid bundle name "%s" in path "%s". Maybe you meant "%s"', substr($file, 1, $pos - 1), $file, $bundle.'/'.$path), $token->getLine(), $stream->getSourceContext(), $e);
 386                         }
 387                 }
 388
 389                 //Return solved bundle prefix and path
 390                 return $prefix.$path;
 391         }
 392 }