cb68150a2f
Credit to Aaron Lehmann for the implementation from SwarmKit. Signed-off-by: Stephen J Day <stephen.day@docker.com>
58 lines
1.6 KiB
Go
58 lines
1.6 KiB
Go
package main
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import (
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"strings"
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"github.com/gogo/protobuf/gogoproto"
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"github.com/gogo/protobuf/proto"
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"github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
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"github.com/gogo/protobuf/protoc-gen-gogo/generator"
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"github.com/gogo/protobuf/vanity"
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)
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// CustomNameID preprocess the field, and set the [(gogoproto.customname) = "..."]
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// if necessary, in order to avoid setting `gogoproto.customname` manually.
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// The automatically assigned name should conform to Golang convention.
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func CustomNameID(file *descriptor.FileDescriptorProto) {
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f := func(field *descriptor.FieldDescriptorProto) {
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// Skip if [(gogoproto.customname) = "..."] has already been set.
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if gogoproto.IsCustomName(field) {
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return
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}
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// Skip if embedded
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if gogoproto.IsEmbed(field) {
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return
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}
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if field.OneofIndex != nil {
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return
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}
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fieldName := generator.CamelCase(*field.Name)
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switch {
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case *field.Name == "id":
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// id -> ID
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fieldName = "ID"
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case strings.HasPrefix(*field.Name, "id_"):
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// id_some -> IDSome
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fieldName = "ID" + fieldName[2:]
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case strings.HasSuffix(*field.Name, "_id"):
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// some_id -> SomeID
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fieldName = fieldName[:len(fieldName)-2] + "ID"
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case strings.HasSuffix(*field.Name, "_ids"):
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// some_ids -> SomeIDs
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fieldName = fieldName[:len(fieldName)-3] + "IDs"
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default:
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return
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}
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if field.Options == nil {
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field.Options = &descriptor.FieldOptions{}
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}
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if err := proto.SetExtension(field.Options, gogoproto.E_Customname, &fieldName); err != nil {
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panic(err)
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}
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}
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// Iterate through all fields in file
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vanity.ForEachFieldExcludingExtensions(file.MessageType, f)
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}
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