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/vendor/guzzlehttp/streams/src/ -> StreamDecoratorTrait.php (source)

   1  <?php
   2  namespace GuzzleHttp\Stream;
   3  use GuzzleHttp\Stream\Exception\CannotAttachException;
   4  
   5  /**
   6   * Stream decorator trait
   7   * @property StreamInterface stream
   8   */
   9  trait StreamDecoratorTrait
  10  {
  11      /**
  12       * @param StreamInterface $stream Stream to decorate
  13       */
  14      public function __construct(StreamInterface $stream)
  15      {
  16          $this->stream = $stream;
  17      }
  18  
  19      /**
  20       * Magic method used to create a new stream if streams are not added in
  21       * the constructor of a decorator (e.g., LazyOpenStream).
  22       */
  23      public function __get($name)
  24      {
  25          if ($name == 'stream') {
  26              $this->stream = $this->createStream();
  27              return $this->stream;
  28          }
  29  
  30          throw new \UnexpectedValueException("$name not found on class");
  31      }
  32  
  33      public function __toString()
  34      {
  35          try {
  36              $this->seek(0);
  37              return $this->getContents();
  38          } catch (\Exception $e) {
  39              // Really, PHP? https://bugs.php.net/bug.php?id=53648
  40              trigger_error('StreamDecorator::__toString exception: '
  41                  . (string) $e, E_USER_ERROR);
  42              return '';
  43          }
  44      }
  45  
  46      public function getContents()
  47      {
  48          return Utils::copyToString($this);
  49      }
  50  
  51      /**
  52       * Allow decorators to implement custom methods
  53       *
  54       * @param string $method Missing method name
  55       * @param array  $args   Method arguments
  56       *
  57       * @return mixed
  58       */
  59      public function __call($method, array $args)
  60      {
  61          $result = call_user_func_array(array($this->stream, $method), $args);
  62  
  63          // Always return the wrapped object if the result is a return $this
  64          return $result === $this->stream ? $this : $result;
  65      }
  66  
  67      public function close()
  68      {
  69          $this->stream->close();
  70      }
  71  
  72      public function getMetadata($key = null)
  73      {
  74          return $this->stream->getMetadata($key);
  75      }
  76  
  77      public function detach()
  78      {
  79          return $this->stream->detach();
  80      }
  81  
  82      public function attach($stream)
  83      {
  84          throw new CannotAttachException();
  85      }
  86  
  87      public function getSize()
  88      {
  89          return $this->stream->getSize();
  90      }
  91  
  92      public function eof()
  93      {
  94          return $this->stream->eof();
  95      }
  96  
  97      public function tell()
  98      {
  99          return $this->stream->tell();
 100      }
 101  
 102      public function isReadable()
 103      {
 104          return $this->stream->isReadable();
 105      }
 106  
 107      public function isWritable()
 108      {
 109          return $this->stream->isWritable();
 110      }
 111  
 112      public function isSeekable()
 113      {
 114          return $this->stream->isSeekable();
 115      }
 116  
 117      public function seek($offset, $whence = SEEK_SET)
 118      {
 119          return $this->stream->seek($offset, $whence);
 120      }
 121  
 122      public function read($length)
 123      {
 124          return $this->stream->read($length);
 125      }
 126  
 127      public function write($string)
 128      {
 129          return $this->stream->write($string);
 130      }
 131  
 132      /**
 133       * Implement in subclasses to dynamically create streams when requested.
 134       *
 135       * @return StreamInterface
 136       * @throws \BadMethodCallException
 137       */
 138      protected function createStream()
 139      {
 140          throw new \BadMethodCallException('createStream() not implemented in '
 141              . get_class($this));
 142      }
 143  }


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