2016-12-21 14:54:48 +00:00

85 lines
1.9 KiB
Go

package main
import (
"encoding/json"
"strings"
"text/template"
"github.com/Masterminds/sprig"
"github.com/huandu/xstrings"
"github.com/golang/protobuf/protoc-gen-go/descriptor"
)
var ProtoHelpersFuncMap = template.FuncMap{
"string": func(i interface {
String() string
}) string {
return i.String()
},
"json": func(v interface{}) string {
a, _ := json.Marshal(v)
return string(a)
},
"prettyjson": func(v interface{}) string {
a, _ := json.MarshalIndent(v, "", " ")
return string(a)
},
"splitArray": func(sep string, s string) []string {
return strings.Split(s, sep)
},
"first": func(a []string) string {
return a[0]
},
"last": func(a []string) string {
return a[len(a)-1]
},
"upperFirst": func(s string) string {
return strings.ToUpper(s[:1]) + s[1:]
},
"lowerFirst": func(s string) string {
return strings.ToLower(s[:1]) + s[1:]
},
"camelCase": func(s string) string {
return xstrings.ToCamelCase(s)
},
"lowerCamelCase": func(s string) string {
cc := xstrings.ToCamelCase(s)
return strings.ToLower(cc[:1]) + cc[1:]
},
"snakeCase": func(s string) string {
return xstrings.ToSnakeCase(s)
},
"kebabCase": func(s string) string {
return strings.Replace(xstrings.ToSnakeCase(s), "_", "-", -1)
},
"getMessageType": getMessageType,
"isFieldMessage": isFieldMessage,
}
func init() {
for k, v := range sprig.TxtFuncMap() {
ProtoHelpersFuncMap[k] = v
}
}
func getMessageType(f *descriptor.FileDescriptorProto, name string) *descriptor.DescriptorProto {
for _, m := range f.MessageType {
// name usually contains the package name
if strings.HasSuffix(name, *m.Name) {
return m
}
}
return nil
}
func isFieldMessage(f *descriptor.FieldDescriptorProto) bool {
if f.Type != nil && *f.Type == descriptor.FieldDescriptorProto_TYPE_MESSAGE &&
f.Label != nil && *f.Label != descriptor.FieldDescriptorProto_LABEL_REPEATED {
return true
}
return false
}