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102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
/*
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Copyright The containerd 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 pathdriver
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import (
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"path/filepath"
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)
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// PathDriver provides all of the path manipulation functions in a common
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// interface. The context should call these and never use the `filepath`
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// package or any other package to manipulate paths.
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type PathDriver interface {
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Join(paths ...string) string
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IsAbs(path string) bool
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Rel(base, target string) (string, error)
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Base(path string) string
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Dir(path string) string
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Clean(path string) string
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Split(path string) (dir, file string)
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Separator() byte
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Abs(path string) (string, error)
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Walk(string, filepath.WalkFunc) error
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FromSlash(path string) string
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ToSlash(path string) string
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Match(pattern, name string) (matched bool, err error)
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}
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// pathDriver is a simple default implementation calls the filepath package.
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type pathDriver struct{}
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// LocalPathDriver is the exported pathDriver struct for convenience.
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var LocalPathDriver PathDriver = &pathDriver{}
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func (*pathDriver) Join(paths ...string) string {
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return filepath.Join(paths...)
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}
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func (*pathDriver) IsAbs(path string) bool {
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return filepath.IsAbs(path)
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}
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func (*pathDriver) Rel(base, target string) (string, error) {
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return filepath.Rel(base, target)
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}
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func (*pathDriver) Base(path string) string {
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return filepath.Base(path)
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}
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func (*pathDriver) Dir(path string) string {
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return filepath.Dir(path)
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}
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func (*pathDriver) Clean(path string) string {
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return filepath.Clean(path)
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}
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func (*pathDriver) Split(path string) (dir, file string) {
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return filepath.Split(path)
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}
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func (*pathDriver) Separator() byte {
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return filepath.Separator
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}
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func (*pathDriver) Abs(path string) (string, error) {
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return filepath.Abs(path)
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}
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// Note that filepath.Walk calls os.Stat, so if the context wants to
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// to call Driver.Stat() for Walk, they need to create a new struct that
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// overrides this method.
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func (*pathDriver) Walk(root string, walkFn filepath.WalkFunc) error {
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return filepath.Walk(root, walkFn)
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}
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func (*pathDriver) FromSlash(path string) string {
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return filepath.FromSlash(path)
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}
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func (*pathDriver) ToSlash(path string) string {
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return filepath.ToSlash(path)
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}
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func (*pathDriver) Match(pattern, name string) (bool, error) {
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return filepath.Match(pattern, name)
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}
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