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.

@access private

Parameters

string $p_filename The path of the file to extract in a string.:

Return value

a string with the file content or NULL.

File

drupal-7.x/modules/system/system.tar.inc, line 1415

Class

Archive_Tar

Creates a (compressed) Tar archive *

Code

function _extractInString($p_filename) 
 {
  $v_result_str = "";

  while (strlen($v_binary_data = $this->_readBlock()) != 0) 
   {
    if (!$this->_readHeader($v_binary_data, $v_header)) {
      return NULL;
    }

    if ($v_header['filename'] == '') {
      continue;
    }

    // ----- Look for long filename
    if ($v_header['typeflag'] == 'L') {
      if (!$this->_readLongHeader($v_header)) {
        return NULL;
      }
    }

    if ($v_header['filename'] == $p_filename) {
      if ($v_header['typeflag'] == "5") {
        $this->_error('Unable to extract in string a directory '
          . 'entry {' . $v_header['filename'] . '}');
        return NULL;
      }
      else {
        $n = floor($v_header['size'] / 512);
        for ($i = 0; $i < $n; $i++) {
          $v_result_str .= $this->_readBlock();
        }
        if (($v_header['size'] % 512) != 0) {
          $v_content = $this->_readBlock();
          $v_result_str .= substr($v_content, 0, 
          ($v_header['size'] % 512));
        }
        return $v_result_str;
      }
    }
    else {
      $this->_jumpBlock(ceil(($v_header['size'] / 512)));
    }
  }

  return NULL;
}