gitea/modules/git/tree.go
2020-03-17 12:19:58 -04:00

131 lines
2.5 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package git
import (
"io"
"strings"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/object"
)
// Tree represents a flat directory listing.
type Tree struct {
ID SHA1
ResolvedID SHA1
repo *Repository
gogitTree *object.Tree
// parent tree
ptree *Tree
}
// NewTree create a new tree according the repository and tree id
func NewTree(repo *Repository, id SHA1) *Tree {
return &Tree{
ID: id,
repo: repo,
}
}
// SubTree get a sub tree by the sub dir path
func (t *Tree) SubTree(rpath string) (*Tree, error) {
if len(rpath) == 0 {
return t, nil
}
paths := strings.Split(rpath, "/")
var (
err error
g = t
p = t
te *TreeEntry
)
for _, name := range paths {
te, err = p.GetTreeEntryByPath(name)
if err != nil {
return nil, err
}
g, err = t.repo.getTree(te.ID)
if err != nil {
return nil, err
}
g.ptree = p
p = g
}
return g, nil
}
func (t *Tree) loadTreeObject() error {
gogitTree, err := t.repo.gogitRepo.TreeObject(t.ID)
if err != nil {
return err
}
t.gogitTree = gogitTree
return nil
}
// ListEntries returns all entries of current tree.
func (t *Tree) ListEntries() (Entries, error) {
if t.gogitTree == nil {
err := t.loadTreeObject()
if err != nil {
return nil, err
}
}
entries := make([]*TreeEntry, len(t.gogitTree.Entries))
for i, entry := range t.gogitTree.Entries {
entries[i] = &TreeEntry{
ID: entry.Hash,
gogitTreeEntry: &t.gogitTree.Entries[i],
ptree: t,
}
}
return entries, nil
}
// ListEntriesRecursive returns all entries of current tree recursively including all subtrees
func (t *Tree) ListEntriesRecursive() (Entries, error) {
if t.gogitTree == nil {
err := t.loadTreeObject()
if err != nil {
return nil, err
}
}
var entries []*TreeEntry
seen := map[plumbing.Hash]bool{}
walker := object.NewTreeWalker(t.gogitTree, true, seen)
for {
fullName, entry, err := walker.Next()
if err == io.EOF {
break
}
if err != nil {
return nil, err
}
if seen[entry.Hash] {
continue
}
convertedEntry := &TreeEntry{
ID: entry.Hash,
gogitTreeEntry: &entry,
ptree: t,
fullName: fullName,
}
entries = append(entries, convertedEntry)
}
return entries, nil
}