Function rerun

cli/cmd/lib_watch.go:59–112

(watchFlag bool, f func() (string, error))

}

func rerun(watchFlag bool, f func() (string, error)) {
	if watchFlag {
		print("\033[H\033[2J") // clear the screen

		var prevStrSlice []string

		for true {
			nextStr, err := f()
			if err != nil {
				fmt.Println()
				exit.Error(err)
			}

			nextStr = watchHeader() + "\n\n" + s.EnsureSingleTrailingNewLine(nextStr)
			nextStrSlice := strings.Split(nextStr, "\n")

			terminalWidth := getTerminalWidth()
			if terminalWidth <= 0 {
				exit.Error(ErrorNoTerminalWidth())
			}

			nextNumLines := 0
			for _, strLine := range nextStrSlice {
				nextNumLines += (len(strLine)-1)/terminalWidth + 1
			}
			prevNumLines := 0
			for _, strLine := range prevStrSlice {
				prevNumLines += (len(strLine)-1)/terminalWidth + 1
			}

			for i := prevNumLines; i > nextNumLines; i-- {
				fmt.Printf("\033[%dA\033[2K", 1) // move the cursor up and clear the line
			}

			for i := 0; i < prevNumLines; i++ {
				fmt.Printf("\033[%dA", 1) // move the cursor up
			}

			for _, strLine := range nextStrSlice {
				fmt.Printf("\033[2K%s\n", strLine) // clear the line and print the new line
			}

			prevStrSlice = nextStrSlice

			time.Sleep(time.Second * 2)
		}
	} else {
		str, err := f()
		if err != nil {
			exit.Error(err)
		}
		fmt.Print(s.EnsureSingleTrailingNewLine(str))
	}
}