/* Copyright 2015 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package generator import ( "path/filepath" "strings" "k8s.io/kubernetes/cmd/libs/go2idl/namer" "k8s.io/kubernetes/cmd/libs/go2idl/types" ) func NewImportTracker(typesToAdd ...*types.Type) namer.ImportTracker { tracker := namer.NewDefaultImportTracker(types.Name{}) tracker.IsInvalidType = func(*types.Type) bool { return false } tracker.LocalName = func(name types.Name) string { return golangTrackerLocalName(&tracker, name) } tracker.PrintImport = func(path, name string) string { return name + " \"" + path + "\"" } tracker.AddTypes(typesToAdd...) return &tracker } func golangTrackerLocalName(tracker namer.ImportTracker, t types.Name) string { path := t.Package dirs := strings.Split(path, string(filepath.Separator)) for n := len(dirs) - 1; n >= 0; n-- { // TODO: bikeshed about whether it's more readable to have an // _, something else, or nothing between directory names. name := strings.Join(dirs[n:], "_") // These characters commonly appear in import paths for go // packages, but aren't legal go names. So we'll sanitize. name = strings.Replace(name, ".", "_", -1) name = strings.Replace(name, "-", "_", -1) if _, found := tracker.PathOf(name); found { // This name collides with some other package continue } return name } panic("can't find import for " + path) }