mirror of
https://github.com/kubernetes-sigs/kustomize.git
synced 2026-05-18 12:42:19 +00:00
81 lines
2.2 KiB
Go
81 lines
2.2 KiB
Go
/*
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Copyright 2018 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 loader has a data loading interface and various implementations.
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package loader
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import (
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"fmt"
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"path/filepath"
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"github.com/kubernetes-sigs/kustomize/pkg/fs"
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)
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// Loader interface exposes methods to read bytes.
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type Loader interface {
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// Root returns the root location for this Loader.
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Root() string
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// New returns Loader located at newRoot.
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New(newRoot string) (Loader, error)
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// Load returns the bytes read from the location or an error.
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Load(location string) ([]byte, error)
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// Cleanup cleans the loader
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Cleanup() error
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}
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// NewLoader returns a Loader given a target
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// The target can be a local disk directory or a github Url
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func NewLoader(target, r string, fSys fs.FileSystem) (Loader, error) {
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if !isValidLoaderPath(target, r) {
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return nil, fmt.Errorf("Not valid path: root='%s', loc='%s'\n", r, target)
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}
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if !isLocalTarget(target, fSys) && isRepoUrl(target) {
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return newGithubLoader(target, fSys)
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}
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l := newFileLoaderAtRoot(r, fSys)
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if isRootLoaderPath(r) {
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absPath, err := filepath.Abs(target)
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if err != nil {
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return nil, err
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}
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target = absPath
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}
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if !l.IsAbsPath(l.root, target) {
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return nil, fmt.Errorf("Not abs path: l.root='%s', loc='%s'\n", l.root, target)
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}
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root, err := l.fullLocation(l.root, target)
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if err != nil {
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return nil, err
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}
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return newFileLoaderAtRoot(root, l.fSys), nil
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}
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func isValidLoaderPath(target, root string) bool {
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return target != "" || root != ""
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}
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func isRootLoaderPath(root string) bool {
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return root == ""
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}
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// isLocalTarget checks if a file exists in the filesystem
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func isLocalTarget(s string, fs fs.FileSystem) bool {
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return fs.Exists(s)
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}
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