| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 1 | package examples |
| 2 | |
| 3 | import ( |
| Máximo Cuadros | 2609538 | 2017-02-01 08:12:52 | [diff] [blame] | 4 | "fmt" |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 5 | "os" |
| 6 | "strings" |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 7 | ) |
| 8 | |
| Anthony HAMON | 44c364f | 2017-12-01 15:27:52 | [diff] [blame] | 9 | // CheckArgs should be used to ensure the right command line arguments are |
| marwan-at-work | 2b503ad | 2017-04-06 19:57:48 | [diff] [blame] | 10 | // passed before executing an example. |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 11 | func CheckArgs(arg ...string) { |
| 12 | if len(os.Args) < len(arg)+1 { |
| 13 | Warning("Usage: %s %s", os.Args[0], strings.Join(arg, " ")) |
| 14 | os.Exit(1) |
| 15 | } |
| 16 | } |
| 17 | |
| marwan-at-work | e0b296d | 2017-04-06 20:25:29 | [diff] [blame] | 18 | // CheckIfError should be used to naively panics if an error is not nil. |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 19 | func CheckIfError(err error) { |
| 20 | if err == nil { |
| 21 | return |
| 22 | } |
| 23 | |
| Máximo Cuadros | 2609538 | 2017-02-01 08:12:52 | [diff] [blame] | 24 | fmt.Printf("\x1b[31;1m%s\x1b[0m\n", fmt.Sprintf("error: %s", err)) |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 25 | os.Exit(1) |
| 26 | } |
| 27 | |
| marwan-at-work | 2b503ad | 2017-04-06 19:57:48 | [diff] [blame] | 28 | // Info should be used to describe the example commands that are about to run. |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 29 | func Info(format string, args ...interface{}) { |
| Máximo Cuadros | 2609538 | 2017-02-01 08:12:52 | [diff] [blame] | 30 | fmt.Printf("\x1b[34;1m%s\x1b[0m\n", fmt.Sprintf(format, args...)) |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 31 | } |
| 32 | |
| marwan-at-work | 2b503ad | 2017-04-06 19:57:48 | [diff] [blame] | 33 | // Warning should be used to display a warning |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 34 | func Warning(format string, args ...interface{}) { |
| Máximo Cuadros | 2609538 | 2017-02-01 08:12:52 | [diff] [blame] | 35 | fmt.Printf("\x1b[36;1m%s\x1b[0m\n", fmt.Sprintf(format, args...)) |
| Máximo Cuadros | 3967812 | 2016-12-12 14:50:03 | [diff] [blame] | 36 | } |
