/
input.go
80 lines (65 loc) · 1.37 KB
/
input.go
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package console
import (
"bufio"
"fmt"
"os"
"strconv"
"strings"
"time"
)
func (c *Console) Float(name string, args ...float64) float64 {
if len(args) == 1 {
fmt.Printf("%s (default: %v): ", name, args[0])
} else {
fmt.Printf("%s: ", name)
}
var input string
fmt.Scanln(&input)
if input == "" {
return args[0]
}
f, err := strconv.ParseFloat(input, 64)
if err != nil {
fmt.Printf("\n%s is not a valid %s\n\n", input, strings.ToLower(name))
return c.Float(name, args...)
}
return f
}
func (c *Console) String(name string, args ...string) string {
if len(args) == 1 {
fmt.Printf("%s (default: %v): ", name, args[0])
} else {
fmt.Printf("%s: ", name)
}
scanner := bufio.NewScanner(os.Stdin)
scanner.Scan()
input := scanner.Text()
input = strings.TrimSpace(input)
if input == "" {
return args[0]
}
return input
}
func (c *Console) Date(name string, args ...time.Time) time.Time {
const layout = "2006-01-02"
if len(args) == 1 {
fmt.Printf("%s (default: %q): ", name, args[0].Format(layout))
} else {
fmt.Printf("%s: ", name)
}
var input string
fmt.Scanln(&input)
input = strings.Trim(input, " ")
if input == "" {
return args[0]
} else {
t, err := time.Parse(layout, input)
if err != nil {
fmt.Println(err)
fmt.Printf("\n%q is not a valid date format\n\n", input)
return c.Date(name, args...)
} else {
return t
}
}
}