github.com/stolowski/snapd@v0.0.0-20210407085831-115137ce5a22/osutil/sizer.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2018-2020 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package osutil
    21  
    22  type Sizer struct {
    23  	size int64
    24  }
    25  
    26  func (sz *Sizer) Write(data []byte) (n int, err error) {
    27  	n = len(data)
    28  	sz.size += int64(n)
    29  	return
    30  }
    31  
    32  func (sz *Sizer) Reset() {
    33  	sz.size = 0
    34  }
    35  
    36  func (sz *Sizer) Size() int64 {
    37  	return sz.size
    38  }