58 lines
1.2 KiB
Markdown
58 lines
1.2 KiB
Markdown
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Using the timestamp flag is simple. Please refer to
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[`time.Parse`](https://golang.org/pkg/time/#example_Parse) to get possible
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formats.
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<!-- {
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"args": ["--meeting", "2019-08-12T15:04:05"],
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"output": "2019\\-08\\-12 15\\:04\\:05 \\+0000 UTC"
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} -->
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```go
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package main
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import (
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"fmt"
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"log"
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"os"
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"github.com/urfave/cli/v2"
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)
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func main() {
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app := &cli.App{
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Flags: []cli.Flag{
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&cli.TimestampFlag{Name: "meeting", Layout: "2006-01-02T15:04:05"},
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},
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Action: func(cCtx *cli.Context) error {
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fmt.Printf("%s", cCtx.Timestamp("meeting").String())
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return nil
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},
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}
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if err := app.Run(os.Args); err != nil {
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log.Fatal(err)
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}
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}
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```
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In this example the flag could be used like this:
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```sh-session
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$ myapp --meeting 2019-08-12T15:04:05
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```
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When the layout doesn't contain timezones, timestamp will render with UTC. To
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change behavior, a default timezone can be provided with flag definition:
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```go
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app := &cli.App{
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Flags: []cli.Flag{
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&cli.TimestampFlag{Name: "meeting", Layout: "2006-01-02T15:04:05", Timezone: time.Local},
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},
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}
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```
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(time.Local contains the system's local time zone.)
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Side note: quotes may be necessary around the date depending on your layout (if
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you have spaces for instance)
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