function ArchiveTar::_readBlock

4 calls to ArchiveTar::_readBlock()
ArchiveTar::_extractInString in drupal/core/lib/Drupal/Component/Archiver/ArchiveTar.php
This method extract from the archive one file identified by $p_filename. The return value is a string with the file content, or NULL on error.
ArchiveTar::_extractList in drupal/core/lib/Drupal/Component/Archiver/ArchiveTar.php
ArchiveTar::_jumpBlock in drupal/core/lib/Drupal/Component/Archiver/ArchiveTar.php
ArchiveTar::_readLongHeader in drupal/core/lib/Drupal/Component/Archiver/ArchiveTar.php

File

drupal/core/lib/Drupal/Component/Archiver/ArchiveTar.php, line 844

Class

ArchiveTar
Creates a (compressed) Tar archive

Namespace

Drupal\Component\Archiver

Code

function _readBlock() {
  $v_block = null;
  if (is_resource($this->_file)) {
    if ($this->_compress_type == 'gz') {
      $v_block = @gzread($this->_file, 512);
    }
    else {
      if ($this->_compress_type == 'bz2') {
        $v_block = @bzread($this->_file, 512);
      }
      else {
        if ($this->_compress_type == 'none') {
          $v_block = @fread($this->_file, 512);
        }
        else {
          $this
            ->_error('Unknown or missing compression type (' . $this->_compress_type . ')');
        }
      }
    }
  }
  return $v_block;
}