diff options
Diffstat (limited to 'vendor/k8s.io/kubernetes/pkg/util/util.go')
-rw-r--r-- | vendor/k8s.io/kubernetes/pkg/util/util.go | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/vendor/k8s.io/kubernetes/pkg/util/util.go b/vendor/k8s.io/kubernetes/pkg/util/util.go deleted file mode 100644 index 389e145e8..000000000 --- a/vendor/k8s.io/kubernetes/pkg/util/util.go +++ /dev/null @@ -1,140 +0,0 @@ -/* -Copyright 2014 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 util - -import ( - "fmt" - "os" - "reflect" - "regexp" -) - -// Takes a list of strings and compiles them into a list of regular expressions -func CompileRegexps(regexpStrings []string) ([]*regexp.Regexp, error) { - regexps := []*regexp.Regexp{} - for _, regexpStr := range regexpStrings { - r, err := regexp.Compile(regexpStr) - if err != nil { - return []*regexp.Regexp{}, err - } - regexps = append(regexps, r) - } - return regexps, nil -} - -// Detects if using systemd as the init system -// Please note that simply reading /proc/1/cmdline can be misleading because -// some installation of various init programs can automatically make /sbin/init -// a symlink or even a renamed version of their main program. -// TODO(dchen1107): realiably detects the init system using on the system: -// systemd, upstart, initd, etc. -func UsingSystemdInitSystem() bool { - if _, err := os.Stat("/run/systemd/system"); err == nil { - return true - } - - return false -} - -// Tests whether all pointer fields in a struct are nil. This is useful when, -// for example, an API struct is handled by plugins which need to distinguish -// "no plugin accepted this spec" from "this spec is empty". -// -// This function is only valid for structs and pointers to structs. Any other -// type will cause a panic. Passing a typed nil pointer will return true. -func AllPtrFieldsNil(obj interface{}) bool { - v := reflect.ValueOf(obj) - if !v.IsValid() { - panic(fmt.Sprintf("reflect.ValueOf() produced a non-valid Value for %#v", obj)) - } - if v.Kind() == reflect.Ptr { - if v.IsNil() { - return true - } - v = v.Elem() - } - for i := 0; i < v.NumField(); i++ { - if v.Field(i).Kind() == reflect.Ptr && !v.Field(i).IsNil() { - return false - } - } - return true -} - -func FileExists(filename string) (bool, error) { - if _, err := os.Stat(filename); os.IsNotExist(err) { - return false, nil - } else if err != nil { - return false, err - } - return true, nil -} - -func FileOrSymlinkExists(filename string) (bool, error) { - if _, err := os.Lstat(filename); os.IsNotExist(err) { - return false, nil - } else if err != nil { - return false, err - } - return true, nil -} - -// ReadDirNoStat returns a string of files/directories contained -// in dirname without calling lstat on them. -func ReadDirNoStat(dirname string) ([]string, error) { - if dirname == "" { - dirname = "." - } - - f, err := os.Open(dirname) - if err != nil { - return nil, err - } - defer f.Close() - - return f.Readdirnames(-1) -} - -// IntPtr returns a pointer to an int -func IntPtr(i int) *int { - o := i - return &o -} - -// Int32Ptr returns a pointer to an int32 -func Int32Ptr(i int32) *int32 { - o := i - return &o -} - -// IntPtrDerefOr dereference the int ptr and returns it i not nil, -// else returns def. -func IntPtrDerefOr(ptr *int, def int) int { - if ptr != nil { - return *ptr - } - return def -} - -// Int32PtrDerefOr dereference the int32 ptr and returns it i not nil, -// else returns def. -func Int32PtrDerefOr(ptr *int32, def int32) int32 { - if ptr != nil { - return *ptr - } - return def -} |