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/*
* version.go - Version subcommand that can be added to any binary
*
* Copyright 2017 Google Inc.
* Author: Joe Richey (joerichey@google.com)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package cmd
// Templates for use with the version command, which both parse the Info var.
var (
VersionShortTemplate = "{{.Command}} version {{.VersionTag}}\n"
VersionLongTemplate = VersionShortTemplate + `{{if .Compiled}}
Compiled:
{{.Compiled}}
{{end}}{{if len .Authors}}
Author{{with $length := len .Authors}}{{if ne 1 $length}}s{{end}}{{end}}:{{range .Authors}}
{{.}}{{end}}
{{end}}{{if .Copyright}}
Copyright:
{{.Copyright}}
{{end}}`
)
// Version is a command which will display either the VersionTag (by default) or
// the full version information (version, copyright, authors).
var Version = &Command{
Name: "version",
UsageLines: []string{""},
Flags: []Flag{longFlag},
Action: versionAction,
}
// Using longFlag with the version command displays the longer version info.
var longFlag = &BoolFlag{
Name: "long",
Usage: "Print the detailed version and copyright information.",
}
func versionAction(_ []string) error {
if Info.VersionTag == "" {
return ErrUnknownVersion
}
if longFlag.Value {
} else {
}
return nil
}
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