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naming_strategy.go
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/
naming_strategy.go
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package extra
import (
"github.com/qluvio/json-iterator"
"unicode"
)
// SetNamingStrategy rename struct fields uniformly
func SetNamingStrategy(translate func(string) string) {
jsoniter.RegisterExtension(&namingStrategyExtension{jsoniter.DummyExtension{}, translate})
}
type namingStrategyExtension struct {
jsoniter.DummyExtension
translate func(string) string
}
func (extension *namingStrategyExtension) UpdateStructDescriptor(structDescriptor *jsoniter.StructDescriptor) {
for _, binding := range structDescriptor.Fields {
if !binding.RenamedByTag {
binding.ToNames = []string{extension.translate(binding.Field.Name())}
binding.FromNames = []string{extension.translate(binding.Field.Name())}
}
}
}
// LowerCaseWithUnderscores one strategy to SetNamingStrategy for. It will change HelloWorld to hello_world.
func LowerCaseWithUnderscores(name string) string {
newName := []rune{}
for i, c := range name {
if i == 0 {
newName = append(newName, unicode.ToLower(c))
} else {
if unicode.IsUpper(c) {
newName = append(newName, '_')
newName = append(newName, unicode.ToLower(c))
} else {
newName = append(newName, c)
}
}
}
return string(newName)
}