-
-
Notifications
You must be signed in to change notification settings - Fork 4
/
formatter.go
174 lines (137 loc) · 4.34 KB
/
formatter.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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
package slogformatter
import (
"log/slog"
"slices"
)
type LogValuerFunc func(any) (slog.Value, bool)
type Formatter func(groups []string, attr slog.Attr) (slog.Value, bool)
// Format pass every attributes into a formatter.
func Format[T any](formatter func([]string, string, slog.Value) slog.Value) Formatter {
return func(groups []string, attr slog.Attr) (slog.Value, bool) {
return formatter(groups, attr.Key, attr.Value), true
}
}
// FormatByType pass attributes matching generic type into a formatter.
func FormatByType[T any](formatter func(T) slog.Value) Formatter {
return func(_ []string, attr slog.Attr) (slog.Value, bool) {
value := attr.Value
if value.Kind() == slog.KindGroup {
return value, false
}
if v, ok := value.Any().(T); ok {
return formatter(v), true
}
if value.Kind() == slog.KindGroup {
updated := false
attrs := []slog.Attr{}
for _, attr := range value.Group() {
if v, ok := value.Any().(T); ok {
attrs = append(attrs, slog.Attr{Key: attr.Key, Value: formatter(v)})
updated = true
} else {
attrs = append(attrs, attr)
}
}
if updated {
return slog.GroupValue(attrs...), true
}
}
return value, false
}
}
// FormatByKind pass attributes matching `slog.Kind` into a formatter.
func FormatByKind(kind slog.Kind, formatter func(slog.Value) slog.Value) Formatter {
return func(_ []string, attr slog.Attr) (slog.Value, bool) {
value := attr.Value
if value.Kind() == kind {
return formatter(value), true
}
if value.Kind() == slog.KindGroup {
updated := false
attrs := []slog.Attr{}
for _, attr := range value.Group() {
if attr.Value.Kind() == kind {
attrs = append(attrs, slog.Attr{Key: attr.Key, Value: formatter(attr.Value)})
updated = true
} else {
attrs = append(attrs, attr)
}
}
if updated {
return slog.GroupValue(attrs...), true
}
}
return value, false
}
}
// FormatByKey pass attributes matching key into a formatter.
func FormatByKey(key string, formatter func(slog.Value) slog.Value) Formatter {
return func(_ []string, attr slog.Attr) (slog.Value, bool) {
value := attr.Value
if attr.Key == key {
return formatter(value), true
}
if value.Kind() == slog.KindGroup {
updated := false
attrs := []slog.Attr{}
for _, attr := range value.Group() {
if attr.Key == key {
attrs = append(attrs, slog.Attr{Key: attr.Key, Value: formatter(attr.Value)})
updated = true
} else {
attrs = append(attrs, attr)
}
}
if updated {
return slog.GroupValue(attrs...), true
}
}
return value, false
}
}
// FormatByFieldType pass attributes matching both key and generic type into a formatter.
func FormatByFieldType[T any](key string, formatter func(T) slog.Value) Formatter {
return func(_ []string, attr slog.Attr) (slog.Value, bool) {
value := attr.Value
if value.Kind() == slog.KindGroup || attr.Key != key {
return value, false
}
if v, ok := value.Any().(T); ok {
return formatter(v), true
}
return value, false
}
}
// FormatByGroup pass attributes under a group into a formatter.
func FormatByGroup(groups []string, formatter func([]slog.Attr) slog.Value) Formatter {
return func(currentGroup []string, attr slog.Attr) (slog.Value, bool) {
value := attr.Value
if value.Kind() != slog.KindGroup || !slices.Equal(groups, append(currentGroup, attr.Key)) {
return value, false
}
return formatter(value.Group()), true
}
}
// FormatByGroupKey pass attributes under a group and matching key, into a formatter.
func FormatByGroupKey(groups []string, key string, formatter func(slog.Value) slog.Value) Formatter {
return func(currentGroup []string, attr slog.Attr) (slog.Value, bool) {
value := attr.Value
if !slices.Equal(groups, currentGroup) || attr.Key != key {
return value, false
}
return formatter(value), true
}
}
// FormatByGroupKeyType pass attributes under a group, matching key and matching a generic type, into a formatter.
func FormatByGroupKeyType[T any](groups []string, key string, formatter func(T) slog.Value) Formatter {
return func(currentGroup []string, attr slog.Attr) (slog.Value, bool) {
value := attr.Value
if value.Kind() == slog.KindGroup || !slices.Equal(groups, currentGroup) || attr.Key != key {
return value, false
}
if v, ok := value.Any().(T); ok {
return formatter(v), true
}
return value, false
}
}