Repository navigation
Expand file tree
/
Copy pathgstr_trim.go
More file actions
83 lines (73 loc) · 2.53 KB
/
Copy pathgstr_trim.go
File metadata and controls
83 lines (73 loc) · 2.53 KB
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
// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gstr
import (
"strings"
)
var (
// defaultTrimChars are the characters which are stripped by Trim* functions in default.
defaultTrimChars = string([]byte{
'\t', // Tab.
'\v', // Vertical tab.
'\n', // New line (line feed).
'\r', // Carriage return.
'\f', // New page.
' ', // Ordinary space.
0x00, // NUL-byte.
0x85, // Delete.
0xA0, // Non-breaking space.
})
)
// Trim strips whitespace (or other characters) from the beginning and end of a string.
// The optional parameter <characterMask> specifies the additional stripped characters.
func Trim(str string, characterMask ...string) string {
if len(characterMask) == 0 {
return strings.Trim(str, defaultTrimChars)
} else {
return strings.Trim(str, defaultTrimChars+characterMask[0])
}
}
// TrimStr strips all of the given <cut> string from the beginning and end of a string.
// Note that it does not strips the whitespaces of its beginning or end.
func TrimStr(str string, cut string) string {
return TrimLeftStr(TrimRightStr(str, cut), cut)
}
// TrimLeft strips whitespace (or other characters) from the beginning of a string.
func TrimLeft(str string, characterMask ...string) string {
if len(characterMask) == 0 {
return strings.TrimLeft(str, defaultTrimChars)
} else {
return strings.TrimLeft(str, defaultTrimChars+characterMask[0])
}
}
// TrimLeftStr strips all of the given <cut> string from the beginning of a string.
// Note that it does not strips the whitespaces of its beginning.
func TrimLeftStr(str string, cut string) string {
var lenCut = len(cut)
for len(str) >= lenCut && str[0:lenCut] == cut {
str = str[lenCut:]
}
return str
}
// TrimRight strips whitespace (or other characters) from the end of a string.
func TrimRight(str string, characterMask ...string) string {
if len(characterMask) == 0 {
return strings.TrimRight(str, defaultTrimChars)
} else {
return strings.TrimRight(str, defaultTrimChars+characterMask[0])
}
}
// TrimRightStr strips all of the given <cut> string from the end of a string.
// Note that it does not strips the whitespaces of its end.
func TrimRightStr(str string, cut string) string {
var lenStr = len(str)
var lenCut = len(cut)
for lenStr >= lenCut && str[lenStr-lenCut:lenStr] == cut {
lenStr = lenStr - lenCut
str = str[:lenStr]
}
return str
}