3eaacc01ae
- update k8s client_go - update k8s apiextensions-apiserver - update k8s controller-tools Signed-off-by: leonnicolas <leonloechner@gmx.de>
100 lines
2.9 KiB
Go
100 lines
2.9 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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gobuild "go/build"
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"os"
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"path/filepath"
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"reflect"
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"strings"
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"golang.org/x/tools/go/packages"
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)
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type empty struct{}
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// CurrentPackage returns the go package of the current directory, or "" if it cannot
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// be derived from the GOPATH.
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func CurrentPackage() string {
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for _, root := range gobuild.Default.SrcDirs() {
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if pkg, ok := hasSubdir(root, "."); ok {
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return pkg
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}
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}
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return ""
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}
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func hasSubdir(root, dir string) (rel string, ok bool) {
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// ensure a tailing separator to properly compare on word-boundaries
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const sep = string(filepath.Separator)
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root = filepath.Clean(root)
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if !strings.HasSuffix(root, sep) {
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root += sep
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}
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// check whether root dir starts with root
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dir = filepath.Clean(dir)
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if !strings.HasPrefix(dir, root) {
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return "", false
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}
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// cut off root
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return filepath.ToSlash(dir[len(root):]), true
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}
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// BoilerplatePath returns the path to the boilerplate file in code-generator,
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// or "" if the default boilerplate.go.txt file cannot be located.
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func BoilerplatePath() string {
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// set up paths to check
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paths := []string{
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// works when run from root of $GOPATH containing k8s.io/code-generator
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filepath.Join(reflect.TypeOf(empty{}).PkgPath(), "/../../hack/boilerplate.go.txt"),
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// works when run from root of module vendoring k8s.io/code-generator
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"vendor/k8s.io/code-generator/hack/boilerplate.go.txt",
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// works when run from root of $GOPATH containing k8s.io/kubernetes
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"k8s.io/kubernetes/vendor/k8s.io/code-generator/hack/boilerplate.go.txt",
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}
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// see if we can locate the module directory and add that to the list
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config := packages.Config{Mode: packages.NeedModule}
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if loadedPackages, err := packages.Load(&config, "k8s.io/code-generator/pkg/util"); err == nil {
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for _, loadedPackage := range loadedPackages {
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if loadedPackage.Module != nil && loadedPackage.Module.Dir != "" {
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paths = append(paths, filepath.Join(loadedPackage.Module.Dir, "hack/boilerplate.go.txt"))
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}
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}
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}
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// try all paths and return the first that exists
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for _, path := range paths {
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if _, err := os.Stat(path); err == nil {
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return path
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}
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}
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// cannot be located, invoker will have to explicitly specify boilerplate file
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return ""
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}
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// Vendorless trims vendor prefix from a package path to make it canonical
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func Vendorless(p string) string {
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if pos := strings.LastIndex(p, "/vendor/"); pos != -1 {
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return p[pos+len("/vendor/"):]
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}
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return p
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}
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