-
Notifications
You must be signed in to change notification settings - Fork 0
/
user_input.go
77 lines (61 loc) · 1.36 KB
/
user_input.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
package console
import (
"bufio"
"fmt"
"os"
"strconv"
"strings"
)
func Prompt(prompt string) (string, error) {
fmt.Print(prompt)
return ReadLine()
}
func PromptInt64(prompt string) (int64, error) {
fmt.Print(prompt)
l, err := ReadLine()
if err != nil {
return 0, err
}
// convert string to int64
var i int64
i, err = strconv.ParseInt(l, 10, 64)
if err != nil {
return 0, err
}
return i, nil
}
func PromptMultiLine(prompt string) ([]string, error) {
fmt.Print(prompt)
return ReadMultiLine()
}
func ReadLine() (string, error) {
scanner := bufio.NewScanner(os.Stdin)
if scanner.Scan() {
input := strings.TrimSpace(scanner.Text())
return input, nil
}
if err := scanner.Err(); err != nil {
return "", err
}
return "", nil
}
// Multi line logic allows the user to enter multiple lines of text and ends when the users enters a full stop on a new line
func ReadMultiLine() ([]string, error) {
scanner := bufio.NewScanner(os.Stdin)
var lines []string
for scanner.Scan() {
input := strings.TrimSpace(scanner.Text())
// If is the first line and the user didn't enter anything, return an empty string, this a quick way to exit the prompt
if len(lines) == 0 && input == "" {
return lines, nil
}
if input == "." {
break
}
lines = append(lines, input)
}
if err := scanner.Err(); err != nil {
return lines, err
}
return lines, nil
}