-
Notifications
You must be signed in to change notification settings - Fork 0
/
parser.go
103 lines (89 loc) · 1.98 KB
/
parser.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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
package server
import (
"strings"
)
// checkArgumentsLength returns an error if length is not equal to expected.
func checkArgumentsLength(length int, expected int) error {
if length > expected {
return InputTooManyArguments
} else if length < expected {
return InputTooFewArguments
}
return nil
}
func ProcessInput(c Client, text string) error {
commands := strings.Fields(text)
commandsLen := len(commands)
if commandsLen == 0 {
return nil
}
thisCommand := commands[0]
switch thisCommand {
case "cd":
err := checkArgumentsLength(commandsLen, 2)
if err != nil {
return &InputError{thisCommand, err}
}
err = ChangeDirectoryCommand(c, commands[1])
if err != nil {
return err
}
case "get":
err := checkArgumentsLength(commandsLen, 2)
if err != nil {
return &InputError{thisCommand, err}
}
// Get the file
_, err = GetFile(c, commands[1])
if err != nil {
return &InputError{thisCommand, err}
}
case "pic":
err := checkArgumentsLength(commandsLen, 2)
if err != nil {
return &InputError{thisCommand, err}
}
// Get the file
err = SendASCIIPic(c, commands[1])
if err != nil {
return &InputError{thisCommand, err}
}
case "ls":
err := checkArgumentsLength(commandsLen, 1)
if err != nil {
return &InputError{thisCommand, err}
}
err = ListFiles(c)
if err != nil {
return &InputError{thisCommand, err}
}
case "clear":
err := checkArgumentsLength(commandsLen, 1)
if err != nil {
return &InputError{thisCommand, err}
}
err = ClearScreen(c)
if err != nil {
return err
}
case "help":
// Check arguments
err := checkArgumentsLength(commandsLen, 1)
if err != nil {
return &InputError{thisCommand, err}
}
err = ShowHelp(c)
if err != nil {
return &InputError{thisCommand, err}
}
case "exit":
err := checkArgumentsLength(commandsLen, 1)
if err != nil {
return &InputError{thisCommand, err}
}
c.Disconnect()
default:
return &InputError{thisCommand, InputInvalidCommand}
}
return nil
}