49 lines
907 B
Go
49 lines
907 B
Go
package main
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import (
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"context"
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"flag"
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"fmt"
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"io"
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)
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// VersionCommand represents a command to print the current version.
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type VersionCommand struct {
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stdin io.Reader
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stdout io.Writer
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stderr io.Writer
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}
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// NewVersionCommand returns a new instance of VersionCommand.
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func NewVersionCommand(stdin io.Reader, stdout, stderr io.Writer) *VersionCommand {
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return &VersionCommand{
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stdin: stdin,
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stdout: stdout,
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stderr: stderr,
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}
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}
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// Run executes the command.
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func (c *VersionCommand) Run(ctx context.Context, args []string) (err error) {
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fs := flag.NewFlagSet("litestream-version", flag.ContinueOnError)
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fs.Usage = c.Usage
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if err := fs.Parse(args); err != nil {
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return err
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}
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fmt.Fprintln(c.stdout, Version)
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return nil
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}
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// Usage prints the help screen to STDOUT.
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func (c *VersionCommand) Usage() {
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fmt.Fprintln(c.stdout, `
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Prints the version.
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Usage:
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litestream version
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`[1:])
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}
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