vendor update for E2E framework

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/sigs.k8s.io/kustomize/pkg/fs/realfs.go

@@ -0,0 +1,122 @@
+/*
+Copyright 2018 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 fs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+var _ FileSystem = realFS{}
+
+// realFS implements FileSystem using the local filesystem.
+type realFS struct{}
+
+// MakeRealFS makes an instance of realFS.
+func MakeRealFS() FileSystem {
+	return realFS{}
+}
+
+// Create delegates to os.Create.
+func (realFS) Create(name string) (File, error) { return os.Create(name) }
+
+// Mkdir delegates to os.Mkdir.
+func (realFS) Mkdir(name string) error {
+	return os.Mkdir(name, 0777|os.ModeDir)
+}
+
+// MkdirAll delegates to os.MkdirAll.
+func (realFS) MkdirAll(name string) error {
+	return os.MkdirAll(name, 0777|os.ModeDir)
+}
+
+// RemoveAll delegates to os.RemoveAll.
+func (realFS) RemoveAll(name string) error {
+	return os.RemoveAll(name)
+}
+
+// Open delegates to os.Open.
+func (realFS) Open(name string) (File, error) { return os.Open(name) }
+
+// CleanedAbs returns a cleaned, absolute path
+// with no symbolic links split into directory
+// and file components.  If the entire path is
+// a directory, the file component is an empty
+// string.
+func (x realFS) CleanedAbs(
+	path string) (ConfirmedDir, string, error) {
+	absRoot, err := filepath.Abs(path)
+	if err != nil {
+		return "", "", fmt.Errorf(
+			"abs path error on '%s' : %v", path, err)
+	}
+	deLinked, err := filepath.EvalSymlinks(absRoot)
+	if err != nil {
+		return "", "", fmt.Errorf(
+			"evalsymlink failure on '%s' : %v", path, err)
+	}
+	if x.IsDir(deLinked) {
+		return ConfirmedDir(deLinked), "", nil
+	}
+	d := filepath.Dir(deLinked)
+	if !x.IsDir(d) {
+		// Programmer/assumption error.
+		log.Fatalf("first part of '%s' not a directory", deLinked)
+	}
+	if d == deLinked {
+		// Programmer/assumption error.
+		log.Fatalf("d '%s' should be a subset of deLinked", d)
+	}
+	f := filepath.Base(deLinked)
+	if filepath.Join(d, f) != deLinked {
+		// Programmer/assumption error.
+		log.Fatalf("these should be equal: '%s', '%s'",
+			filepath.Join(d, f), deLinked)
+	}
+	return ConfirmedDir(d), f, nil
+}
+
+// Exists returns true if os.Stat succeeds.
+func (realFS) Exists(name string) bool {
+	_, err := os.Stat(name)
+	return err == nil
+}
+
+// Glob returns the list of matching files
+func (realFS) Glob(pattern string) ([]string, error) {
+	return filepath.Glob(pattern)
+}
+
+// IsDir delegates to os.Stat and FileInfo.IsDir
+func (realFS) IsDir(name string) bool {
+	info, err := os.Stat(name)
+	if err != nil {
+		return false
+	}
+	return info.IsDir()
+}
+
+// ReadFile delegates to ioutil.ReadFile.
+func (realFS) ReadFile(name string) ([]byte, error) { return ioutil.ReadFile(name) }
+
+// WriteFile delegates to ioutil.WriteFile with read/write permissions.
+func (realFS) WriteFile(name string, c []byte) error {
+	return ioutil.WriteFile(name, c, 0666)
+}