mirror of
https://github.com/kopia/kopia.git
synced 2026-01-24 22:38:00 -05:00
4a47bc3210
This is much more efficient in terms of memory allocations and speeds up backup due to less GC pressure. Fixes #1345
79 lines
2.0 KiB
Go
79 lines
2.0 KiB
Go
/*
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Command-line tool for creating and accessing backups.
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Usage:
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$ kopia [<flags>] <subcommand> [<args> ...]
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Use 'kopia help' to see more details.
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*/
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package main
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import (
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"os"
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"github.com/alecthomas/kingpin"
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"github.com/kopia/kopia/cli"
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"github.com/kopia/kopia/internal/logfile"
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"github.com/kopia/kopia/repo"
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)
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const usageTemplate = `{{define "FormatCommand"}}\
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{{if .FlagSummary}} {{.FlagSummary}}{{end}}\
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{{range .Args}} {{if not .Required}}[{{end}}<{{.Name}}>{{if .Value|IsCumulative}}...{{end}}{{if not .Required}}]{{end}}{{end}}\
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{{end}}\
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{{define "FormatCommandList"}}\
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{{range .}}\
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{{if not .Hidden}}\
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{{.Depth|Indent}}{{.Name}}{{if .Default}}*{{end}}{{template "FormatCommand" .}}
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{{template "FormatCommandList" .Commands}}\
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{{end}}\
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{{end}}\
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{{end}}\
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{{define "FormatUsage"}}\
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{{template "FormatCommand" .}}{{if .Commands}} <command> [<args> ...]{{end}}
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{{if .Help}}
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{{.Help|Wrap 0}}\
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{{end}}\
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{{end}}\
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{{if .Context.SelectedCommand}}\
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usage: {{.App.Name}} {{.Context.SelectedCommand}}{{template "FormatUsage" .Context.SelectedCommand}}
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{{else}}\
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usage: {{.App.Name}}{{template "FormatUsage" .App}}
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{{end}}\
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{{if .Context.Flags}}\
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Flags:
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{{.Context.Flags|FlagsToTwoColumns|FormatTwoColumns}}
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{{end}}\
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{{if .Context.Args}}\
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Args:
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{{.Context.Args|ArgsToTwoColumns|FormatTwoColumns}}
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{{end}}\
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{{if .Context.SelectedCommand}}\
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{{if .Context.SelectedCommand.Commands}}\
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Subcommands:
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{{.Context.SelectedCommand}}
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{{template "FormatCommandList" .Context.SelectedCommand.Commands}}
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{{end}}\
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{{else if .App.Commands}}\
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Commands (use --help-full to list all commands):
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{{template "FormatCommandList" .App.Commands}}
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{{end}}\
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`
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func main() {
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app := cli.NewApp()
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kp := kingpin.New("kopia", "Kopia - Fast And Secure Open-Source Backup").Author("http://kopia.github.io/")
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kp.Version(repo.BuildVersion + " build: " + repo.BuildInfo + " from: " + repo.BuildGitHubRepo)
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logfile.Attach(app, kp)
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kp.ErrorWriter(os.Stderr)
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kp.UsageWriter(os.Stdout)
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kp.UsageTemplate(usageTemplate)
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app.Attach(kp)
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kingpin.MustParse(kp.Parse(os.Args[1:]))
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}
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