github.com/chipaca/snappy@v0.0.0-20210104084008-1f06296fe8ad/cmd/snap/cmd_version.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2016 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 main
    21  
    22  import (
    23  	"fmt"
    24  
    25  	"github.com/jessevdk/go-flags"
    26  
    27  	"github.com/snapcore/snapd/client"
    28  	"github.com/snapcore/snapd/i18n"
    29  	"github.com/snapcore/snapd/snapdtool"
    30  )
    31  
    32  var shortVersionHelp = i18n.G("Show version details")
    33  var longVersionHelp = i18n.G(`
    34  The version command displays the versions of the running client, server,
    35  and operating system.
    36  `)
    37  
    38  type cmdVersion struct {
    39  	clientMixin
    40  }
    41  
    42  func init() {
    43  	addCommand("version", shortVersionHelp, longVersionHelp, func() flags.Commander { return &cmdVersion{} }, nil, nil)
    44  }
    45  
    46  func (cmd cmdVersion) Execute(args []string) error {
    47  	if len(args) > 0 {
    48  		return ErrExtraArgs
    49  	}
    50  
    51  	return printVersions(cmd.client)
    52  }
    53  
    54  func printVersions(cli *client.Client) error {
    55  	sv := serverVersion(cli)
    56  	w := tabWriter()
    57  
    58  	fmt.Fprintf(w, "snap\t%s\n", snapdtool.Version)
    59  	fmt.Fprintf(w, "snapd\t%s\n", sv.Version)
    60  	fmt.Fprintf(w, "series\t%s\n", sv.Series)
    61  	if sv.OnClassic {
    62  		if sv.OSVersionID == "" {
    63  			sv.OSVersionID = "-"
    64  		}
    65  		fmt.Fprintf(w, "%s\t%s\n", sv.OSID, sv.OSVersionID)
    66  	}
    67  	if sv.KernelVersion != "" {
    68  		fmt.Fprintf(w, "kernel\t%s\n", sv.KernelVersion)
    69  	}
    70  
    71  	w.Flush()
    72  
    73  	return nil
    74  }