mirror of
https://github.com/goharbor/harbor
synced 2025-04-12 16:34:03 +00:00
151 lines
3.0 KiB
Go
151 lines
3.0 KiB
Go
// Copyright Project Harbor 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 parser
|
|
|
|
import (
|
|
"archive/tar"
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"path/filepath"
|
|
"strings"
|
|
"sync"
|
|
)
|
|
|
|
func untar(reader io.Reader) ([]byte, error) {
|
|
tr := tar.NewReader(reader)
|
|
var buf bytes.Buffer
|
|
for {
|
|
header, err := tr.Next()
|
|
if err == io.EOF {
|
|
break
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to read tar header: %w", err)
|
|
}
|
|
|
|
// skip the directory.
|
|
if header.Typeflag == tar.TypeDir {
|
|
continue
|
|
}
|
|
|
|
if _, err := io.Copy(&buf, tr); err != nil {
|
|
return nil, fmt.Errorf("failed to copy content to buffer: %w", err)
|
|
}
|
|
}
|
|
|
|
return buf.Bytes(), nil
|
|
}
|
|
|
|
// FileType represents the type of a file.
|
|
type FileType = string
|
|
|
|
const (
|
|
TypeFile FileType = "file"
|
|
TypeDirectory FileType = "directory"
|
|
)
|
|
|
|
type FileNode struct {
|
|
Name string
|
|
Type FileType
|
|
Size int64
|
|
Children map[string]*FileNode
|
|
mu sync.RWMutex
|
|
}
|
|
|
|
func NewFile(name string, size int64) *FileNode {
|
|
return &FileNode{
|
|
Name: name,
|
|
Type: TypeFile,
|
|
Size: size,
|
|
}
|
|
}
|
|
|
|
func NewDirectory(name string) *FileNode {
|
|
return &FileNode{
|
|
Name: name,
|
|
Type: TypeDirectory,
|
|
Children: make(map[string]*FileNode),
|
|
}
|
|
}
|
|
|
|
func (root *FileNode) AddChild(child *FileNode) error {
|
|
root.mu.Lock()
|
|
defer root.mu.Unlock()
|
|
|
|
if root.Type != TypeDirectory {
|
|
return fmt.Errorf("cannot add child to non-directory node")
|
|
}
|
|
|
|
root.Children[child.Name] = child
|
|
return nil
|
|
}
|
|
|
|
func (root *FileNode) GetChild(name string) (*FileNode, bool) {
|
|
root.mu.RLock()
|
|
defer root.mu.RUnlock()
|
|
|
|
child, ok := root.Children[name]
|
|
return child, ok
|
|
}
|
|
|
|
func (root *FileNode) AddNode(path string, size int64, isDir bool) (*FileNode, error) {
|
|
path = filepath.Clean(path)
|
|
parts := strings.Split(path, string(filepath.Separator))
|
|
|
|
current := root
|
|
for i, part := range parts {
|
|
if part == "" {
|
|
continue
|
|
}
|
|
|
|
isLastPart := i == len(parts)-1
|
|
child, exists := current.GetChild(part)
|
|
if !exists {
|
|
var newNode *FileNode
|
|
if isLastPart {
|
|
if isDir {
|
|
newNode = NewDirectory(part)
|
|
} else {
|
|
newNode = NewFile(part, size)
|
|
}
|
|
} else {
|
|
newNode = NewDirectory(part)
|
|
}
|
|
|
|
if err := current.AddChild(newNode); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
current = newNode
|
|
} else {
|
|
child.mu.RLock()
|
|
nodeType := child.Type
|
|
child.mu.RUnlock()
|
|
|
|
if isLastPart {
|
|
if (isDir && nodeType != TypeDirectory) || (!isDir && nodeType != TypeFile) {
|
|
return nil, fmt.Errorf("path conflicts: %s exists with different type", part)
|
|
}
|
|
}
|
|
|
|
current = child
|
|
}
|
|
}
|
|
|
|
return current, nil
|
|
}
|