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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,174 @@ | ||
| package utilx | ||
|
|
||
| import ( | ||
| "reflect" | ||
| "regexp" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| // SetDefaults sets the default values for the fields of the given struct. | ||
| // | ||
| // Usage | ||
| // | ||
| // type ExampleBasic struct { | ||
| // Foo bool `default:"true"` | ||
| // Bar string `default:"33"` | ||
| // Qux int8 | ||
| // Dur time.Duration `default:"2m3s"` | ||
| // } | ||
| // | ||
| // foo := &ExampleBasic{} | ||
| // SetDefaults(foo) | ||
| func SetDefaults(variable interface{}) { | ||
| getDefaultFiller().Fill(variable) | ||
| } | ||
|
|
||
| var defaultFiller *Filler = nil | ||
|
|
||
| func getDefaultFiller() *Filler { | ||
| if defaultFiller == nil { | ||
| defaultFiller = newDefaultFiller() | ||
| } | ||
|
|
||
| return defaultFiller | ||
| } | ||
|
|
||
| // nolint: exhaustive | ||
| func newDefaultFiller() *Filler { | ||
| funcs := make(map[reflect.Kind]FillerFunc, 0) | ||
| funcs[reflect.Bool] = func(field *FieldData) { | ||
| value, _ := strconv.ParseBool(field.TagValue) | ||
| field.Value.SetBool(value) | ||
| } | ||
|
|
||
| funcs[reflect.Int] = func(field *FieldData) { | ||
| value, _ := strconv.ParseInt(field.TagValue, 10, 64) | ||
| field.Value.SetInt(value) | ||
| } | ||
|
|
||
| funcs[reflect.Int8] = funcs[reflect.Int] | ||
| funcs[reflect.Int16] = funcs[reflect.Int] | ||
| funcs[reflect.Int32] = funcs[reflect.Int] | ||
| funcs[reflect.Int64] = func(field *FieldData) { | ||
| if field.Field.Type == reflect.TypeOf(time.Second) { | ||
| value, _ := time.ParseDuration(field.TagValue) | ||
| field.Value.Set(reflect.ValueOf(value)) | ||
| } else { | ||
| value, _ := strconv.ParseInt(field.TagValue, 10, 64) | ||
| field.Value.SetInt(value) | ||
| } | ||
| } | ||
|
|
||
| funcs[reflect.Float32] = func(field *FieldData) { | ||
| value, _ := strconv.ParseFloat(field.TagValue, 64) | ||
| field.Value.SetFloat(value) | ||
| } | ||
|
|
||
| funcs[reflect.Float64] = funcs[reflect.Float32] | ||
|
|
||
| funcs[reflect.Uint] = func(field *FieldData) { | ||
| value, _ := strconv.ParseUint(field.TagValue, 10, 64) | ||
| field.Value.SetUint(value) | ||
| } | ||
|
|
||
| funcs[reflect.Uint8] = funcs[reflect.Uint] | ||
| funcs[reflect.Uint16] = funcs[reflect.Uint] | ||
| funcs[reflect.Uint32] = funcs[reflect.Uint] | ||
| funcs[reflect.Uint64] = funcs[reflect.Uint] | ||
|
|
||
| funcs[reflect.String] = func(field *FieldData) { | ||
| tagValue := parseDateTimeString(field.TagValue) | ||
| field.Value.SetString(tagValue) | ||
| } | ||
|
|
||
| funcs[reflect.Struct] = func(field *FieldData) { | ||
| fields := getDefaultFiller().GetFieldsFromValue(field.Value, nil) | ||
| getDefaultFiller().SetDefaultValues(fields) | ||
| } | ||
|
|
||
| types := make(map[TypeHash]FillerFunc, 1) | ||
| types["time.Duration"] = func(field *FieldData) { | ||
| d, _ := time.ParseDuration(field.TagValue) | ||
| field.Value.Set(reflect.ValueOf(d)) | ||
| } | ||
|
|
||
| funcs[reflect.Slice] = func(field *FieldData) { | ||
| k := field.Value.Type().Elem().Kind() | ||
| switch k { | ||
| case reflect.Uint8: | ||
| if field.Value.Bytes() != nil { | ||
| return | ||
| } | ||
| field.Value.SetBytes([]byte(field.TagValue)) | ||
| case reflect.Struct: | ||
| count := field.Value.Len() | ||
| for i := 0; i < count; i++ { | ||
| fields := getDefaultFiller().GetFieldsFromValue(field.Value.Index(i), nil) | ||
| getDefaultFiller().SetDefaultValues(fields) | ||
| } | ||
| default: | ||
| // 处理形如 [1,2,3,4] | ||
| reg := regexp.MustCompile(`^\[(.*)\]$`) | ||
| matchs := reg.FindStringSubmatch(field.TagValue) | ||
| if len(matchs) != 2 { | ||
| return | ||
| } | ||
| if matchs[1] == "" { | ||
| field.Value.Set(reflect.MakeSlice(field.Value.Type(), 0, 0)) | ||
| } else { | ||
| defaultValue := strings.Split(matchs[1], ",") | ||
| result := reflect.MakeSlice(field.Value.Type(), len(defaultValue), len(defaultValue)) | ||
| for i := 0; i < len(defaultValue); i++ { | ||
| itemValue := result.Index(i) | ||
| item := &FieldData{ | ||
| Value: itemValue, | ||
| Field: reflect.StructField{}, | ||
| TagValue: defaultValue[i], | ||
| Parent: nil, | ||
| } | ||
| funcs[k](item) | ||
| } | ||
| field.Value.Set(result) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return &Filler{FuncByKind: funcs, FuncByType: types, Tag: "default"} | ||
| } | ||
|
|
||
| func parseDateTimeString(data string) string { | ||
| pattern := regexp.MustCompile(`\{\{(\w+\:(?:-|)\d*,(?:-|)\d*,(?:-|)\d*)\}\}`) | ||
| matches := pattern.FindAllStringSubmatch(data, -1) // matches is [][]string | ||
| for _, match := range matches { | ||
|
|
||
| tags := strings.Split(match[1], ":") | ||
| if len(tags) == 2 { | ||
|
|
||
| valueStrings := strings.Split(tags[1], ",") | ||
| if len(valueStrings) == 3 { | ||
| var values [3]int | ||
| for key, valueString := range valueStrings { | ||
| num, _ := strconv.ParseInt(valueString, 10, 64) | ||
| values[key] = int(num) | ||
| } | ||
|
|
||
| switch tags[0] { | ||
|
|
||
| case "date": | ||
| str := time.Now().AddDate(values[0], values[1], values[2]).Format("2006-01-02") | ||
| data = strings.ReplaceAll(data, match[0], str) | ||
| case "time": | ||
| str := time.Now().Add((time.Duration(values[0]) * time.Hour) + | ||
| (time.Duration(values[1]) * time.Minute) + | ||
| (time.Duration(values[2]) * time.Second)).Format("15:04:05") | ||
| data = strings.ReplaceAll(data, match[0], str) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } | ||
|
|
||
| return data | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| package utilx | ||
|
|
||
| import ( | ||
| "testing" | ||
| "time" | ||
|
|
||
| "bou.ke/monkey" | ||
| . "gopkg.in/check.v1" | ||
| ) | ||
|
|
||
| // Hook up gocheck into the "go test" runner. | ||
|
|
||
| func Test(t *testing.T) { | ||
| monkey.Patch(time.Now, func() time.Time { | ||
| t, _ := time.Parse("2006-01-02 15:04:05", "2020-06-10 12:00:00") | ||
| return t | ||
| }) | ||
|
|
||
| TestingT(t) | ||
| } | ||
|
|
||
| type DefaultsSuite struct{} | ||
|
|
||
| var _ = Suite(&DefaultsSuite{}) | ||
|
|
||
| type Parent struct { | ||
| Children []Child | ||
| } | ||
|
|
||
| type Child struct { | ||
| Name string | ||
| Age int `default:"10"` | ||
| } | ||
|
|
||
| type ExampleBasic struct { | ||
| Bool bool `default:"true"` | ||
| Integer int `default:"33"` | ||
| Integer8 int8 `default:"8"` | ||
| Integer16 int16 `default:"16"` | ||
| Integer32 int32 `default:"32"` | ||
| Integer64 int64 `default:"64"` | ||
| UInteger uint `default:"11"` | ||
| UInteger8 uint8 `default:"18"` | ||
| UInteger16 uint16 `default:"116"` | ||
| UInteger32 uint32 `default:"132"` | ||
| UInteger64 uint64 `default:"164"` | ||
| String string `default:"foo"` | ||
| Bytes []byte `default:"bar"` | ||
| Float32 float32 `default:"3.2"` | ||
| Float64 float64 `default:"6.4"` | ||
| Struct struct { | ||
| Bool bool `default:"true"` | ||
| Integer int `default:"33"` | ||
| } | ||
| Duration time.Duration `default:"1s"` | ||
| Children []Child | ||
| Second time.Duration `default:"1s"` | ||
| StringSlice []string `default:"[1,2,3,4]"` | ||
| IntSlice []int `default:"[1,2,3,4]"` | ||
| IntSliceSlice [][]int `default:"[[1],[2],[3],[4]]"` | ||
| StringSliceSlice [][]string `default:"[[1],[]]"` | ||
|
|
||
| DateTime string `default:"{{date:1,-10,0}} {{time:1,-5,10}}"` | ||
| } | ||
|
|
||
| func (s *DefaultsSuite) TestSetDefaultsBasic(c *C) { | ||
| foo := &ExampleBasic{} | ||
| SetDefaults(foo) | ||
|
|
||
| s.assertTypes(c, foo) | ||
| } | ||
|
|
||
| type ExampleNested struct { | ||
| Struct ExampleBasic | ||
| } | ||
|
|
||
| func (s *DefaultsSuite) TestSetDefaultsNested(c *C) { | ||
| foo := &ExampleNested{} | ||
| SetDefaults(foo) | ||
|
|
||
| s.assertTypes(c, &foo.Struct) | ||
| } | ||
|
|
||
| func (s *DefaultsSuite) assertTypes(c *C, foo *ExampleBasic) { | ||
| c.Assert(foo.Bool, Equals, true) | ||
| c.Assert(foo.Integer, Equals, 33) | ||
| c.Assert(foo.Integer8, Equals, int8(8)) | ||
| c.Assert(foo.Integer16, Equals, int16(16)) | ||
| c.Assert(foo.Integer32, Equals, int32(32)) | ||
| c.Assert(foo.Integer64, Equals, int64(64)) | ||
| c.Assert(foo.UInteger, Equals, uint(11)) | ||
| c.Assert(foo.UInteger8, Equals, uint8(18)) | ||
| c.Assert(foo.UInteger16, Equals, uint16(116)) | ||
| c.Assert(foo.UInteger32, Equals, uint32(132)) | ||
| c.Assert(foo.UInteger64, Equals, uint64(164)) | ||
| c.Assert(foo.String, Equals, "foo") | ||
| c.Assert(string(foo.Bytes), Equals, "bar") | ||
| c.Assert(foo.Float32, Equals, float32(3.2)) | ||
| c.Assert(foo.Float64, Equals, 6.4) | ||
| c.Assert(foo.Struct.Bool, Equals, true) | ||
| c.Assert(foo.Duration, Equals, time.Second) | ||
| c.Assert(foo.Children, IsNil) | ||
| c.Assert(foo.Second, Equals, time.Second) | ||
| c.Assert(foo.StringSlice, DeepEquals, []string{"1", "2", "3", "4"}) | ||
| c.Assert(foo.IntSlice, DeepEquals, []int{1, 2, 3, 4}) | ||
| c.Assert(foo.IntSliceSlice, DeepEquals, [][]int{{1}, {2}, {3}, {4}}) | ||
| c.Assert(foo.StringSliceSlice, DeepEquals, [][]string{{"1"}, {}}) | ||
| c.Assert(foo.DateTime, Equals, "2020-08-10 12:55:10") | ||
| } | ||
|
|
||
| func (s *DefaultsSuite) TestSetDefaultsWithValues(c *C) { | ||
| foo := &ExampleBasic{ | ||
| Integer: 55, | ||
| UInteger: 22, | ||
| Float32: 9.9, | ||
| String: "bar", | ||
| Bytes: []byte("foo"), | ||
| Children: []Child{{Name: "alice"}, {Name: "bob", Age: 2}}, | ||
| } | ||
|
|
||
| SetDefaults(foo) | ||
|
|
||
| c.Assert(foo.Integer, Equals, 55) | ||
| c.Assert(foo.UInteger, Equals, uint(22)) | ||
| c.Assert(foo.Float32, Equals, float32(9.9)) | ||
| c.Assert(foo.String, Equals, "bar") | ||
| c.Assert(string(foo.Bytes), Equals, "foo") | ||
| c.Assert(foo.Children[0].Age, Equals, 10) | ||
| c.Assert(foo.Children[1].Age, Equals, 2) | ||
| } | ||
|
|
||
| func (s *DefaultsSuite) BenchmarkLogic(c *C) { | ||
| for i := 0; i < c.N; i++ { | ||
| foo := &ExampleBasic{} | ||
| SetDefaults(foo) | ||
| } | ||
| } |
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