src/Archive/Tar.php
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)));
          }
        }
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)));
          }
        }
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.

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

@return a string with the file content or null.
@access private