Add goctl kotlin support

tools/goctl/api/ktgen/funcs.go

@@ -0,0 +1,67 @@
+package ktgen
+
+import (
+	"github.com/tal-tech/go-zero/tools/goctl/api/util"
+	"log"
+	"strings"
+	"text/template"
+)
+var funcsMap=template.FuncMap{
+	"lowCamelCase":lowCamelCase,
+	"pathToFuncName":pathToFuncName,
+	"parseType":parseType,
+	"add":add,
+}
+func lowCamelCase(s string) string {
+	if len(s) < 1 {
+		return ""
+	}
+	s = util.ToCamelCase(util.ToSnakeCase(s))
+	return util.ToLower(s[:1]) + s[1:]
+}
+
+func pathToFuncName(path string) string {
+	if !strings.HasPrefix(path, "/") {
+		path = "/" + path
+	}
+
+	path = strings.Replace(path, "/", "_", -1)
+	path = strings.Replace(path, "-", "_", -1)
+
+	camel := util.ToCamelCase(path)
+	return util.ToLower(camel[:1]) + camel[1:]
+}
+func parseType(t string) string {
+	t=strings.Replace(t,"*","",-1)
+	if strings.HasPrefix(t,"[]"){
+		return "List<"+parseType(t[2:])+ ">"
+	}
+
+	if strings.HasPrefix(t,"map"){
+		tys,e:=util.DecomposeType(t)
+		if e!=nil{
+		    log.Fatal(e)
+		}
+		if len(tys)!=2{
+			log.Fatal("Map type number !=2")
+		}
+		return "Map<String,"+parseType(tys[1])+">"
+	}
+
+	switch t {
+	case "string":
+		return "String"
+	case "int", "int32", "int64":
+		return "Int"
+	case "float", "float32", "float64":
+		return "Double"
+	case "bool":
+		return "Boolean"
+	default:
+		return t
+	}
+}
+
+func add(a,i int)int{
+	return a+i
+}