mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-08-22 20:47:54 +02:00
258 lines
6.4 KiB
Go
258 lines
6.4 KiB
Go
// Copyright 2015 The Gogs 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 (
|
|
"fmt"
|
|
"path"
|
|
"path/filepath"
|
|
"runtime"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// EntryMode the type of the object in the git tree
|
|
type EntryMode int
|
|
|
|
// There are only a few file modes in Git. They look like unix file modes, but they can only be
|
|
// one of these.
|
|
const (
|
|
// EntryModeBlob
|
|
EntryModeBlob EntryMode = 0100644
|
|
// EntryModeExec
|
|
EntryModeExec EntryMode = 0100755
|
|
// EntryModeSymlink
|
|
EntryModeSymlink EntryMode = 0120000
|
|
// EntryModeCommit
|
|
EntryModeCommit EntryMode = 0160000
|
|
// EntryModeTree
|
|
EntryModeTree EntryMode = 0040000
|
|
)
|
|
|
|
// TreeEntry the leaf in the git tree
|
|
type TreeEntry struct {
|
|
ID SHA1
|
|
Type ObjectType
|
|
|
|
mode EntryMode
|
|
name string
|
|
|
|
ptree *Tree
|
|
|
|
commited bool
|
|
|
|
size int64
|
|
sized bool
|
|
}
|
|
|
|
// Name returns the name of the entry
|
|
func (te *TreeEntry) Name() string {
|
|
return te.name
|
|
}
|
|
|
|
// Size returns the size of the entry
|
|
func (te *TreeEntry) Size() int64 {
|
|
if te.IsDir() {
|
|
return 0
|
|
} else if te.sized {
|
|
return te.size
|
|
}
|
|
|
|
stdout, err := NewCommand("cat-file", "-s", te.ID.String()).RunInDir(te.ptree.repo.Path)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
|
|
te.sized = true
|
|
te.size, _ = strconv.ParseInt(strings.TrimSpace(stdout), 10, 64)
|
|
return te.size
|
|
}
|
|
|
|
// IsSubModule if the entry is a sub module
|
|
func (te *TreeEntry) IsSubModule() bool {
|
|
return te.mode == EntryModeCommit
|
|
}
|
|
|
|
// IsDir if the entry is a sub dir
|
|
func (te *TreeEntry) IsDir() bool {
|
|
return te.mode == EntryModeTree
|
|
}
|
|
|
|
// IsLink if the entry is a symlink
|
|
func (te *TreeEntry) IsLink() bool {
|
|
return te.mode == EntryModeSymlink
|
|
}
|
|
|
|
// Blob retrun the blob object the entry
|
|
func (te *TreeEntry) Blob() *Blob {
|
|
return &Blob{
|
|
repo: te.ptree.repo,
|
|
TreeEntry: te,
|
|
}
|
|
}
|
|
|
|
// GetSubJumpablePathName return the full path of subdirectory jumpable ( contains only one directory )
|
|
func (te *TreeEntry) GetSubJumpablePathName() string {
|
|
if te.IsSubModule() || !te.IsDir() {
|
|
return ""
|
|
}
|
|
tree, err := te.ptree.SubTree(te.name)
|
|
if err != nil {
|
|
return te.name
|
|
}
|
|
entries, _ := tree.ListEntries()
|
|
if len(entries) == 1 && entries[0].IsDir() {
|
|
name := entries[0].GetSubJumpablePathName()
|
|
if name != "" {
|
|
return te.name + "/" + name
|
|
}
|
|
}
|
|
return te.name
|
|
}
|
|
|
|
// Entries a list of entry
|
|
type Entries []*TreeEntry
|
|
|
|
var sorter = []func(t1, t2 *TreeEntry) bool{
|
|
func(t1, t2 *TreeEntry) bool {
|
|
return (t1.IsDir() || t1.IsSubModule()) && !t2.IsDir() && !t2.IsSubModule()
|
|
},
|
|
func(t1, t2 *TreeEntry) bool {
|
|
return t1.name < t2.name
|
|
},
|
|
}
|
|
|
|
func (tes Entries) Len() int { return len(tes) }
|
|
func (tes Entries) Swap(i, j int) { tes[i], tes[j] = tes[j], tes[i] }
|
|
func (tes Entries) Less(i, j int) bool {
|
|
t1, t2 := tes[i], tes[j]
|
|
var k int
|
|
for k = 0; k < len(sorter)-1; k++ {
|
|
s := sorter[k]
|
|
switch {
|
|
case s(t1, t2):
|
|
return true
|
|
case s(t2, t1):
|
|
return false
|
|
}
|
|
}
|
|
return sorter[k](t1, t2)
|
|
}
|
|
|
|
// Sort sort the list of entry
|
|
func (tes Entries) Sort() {
|
|
sort.Sort(tes)
|
|
}
|
|
|
|
type commitInfo struct {
|
|
entryName string
|
|
infos []interface{}
|
|
err error
|
|
}
|
|
|
|
// GetCommitsInfo takes advantages of concurrency to speed up getting information
|
|
// of all commits that are corresponding to these entries. This method will automatically
|
|
// choose the right number of goroutine (concurrency) to use related of the host CPU.
|
|
func (tes Entries) GetCommitsInfo(commit *Commit, treePath string) ([][]interface{}, error) {
|
|
return tes.GetCommitsInfoWithCustomConcurrency(commit, treePath, 0)
|
|
}
|
|
|
|
// GetCommitsInfoWithCustomConcurrency takes advantages of concurrency to speed up getting information
|
|
// of all commits that are corresponding to these entries. If the given maxConcurrency is negative or
|
|
// equal to zero: the right number of goroutine (concurrency) to use will be chosen related of the
|
|
// host CPU.
|
|
func (tes Entries) GetCommitsInfoWithCustomConcurrency(commit *Commit, treePath string, maxConcurrency int) ([][]interface{}, error) {
|
|
if len(tes) == 0 {
|
|
return nil, nil
|
|
}
|
|
|
|
if maxConcurrency <= 0 {
|
|
maxConcurrency = runtime.NumCPU()
|
|
}
|
|
|
|
// Length of taskChan determines how many goroutines (subprocesses) can run at the same time.
|
|
// The length of revChan should be same as taskChan so goroutines whoever finished job can
|
|
// exit as early as possible, only store data inside channel.
|
|
taskChan := make(chan bool, maxConcurrency)
|
|
revChan := make(chan commitInfo, maxConcurrency)
|
|
doneChan := make(chan error)
|
|
|
|
// Receive loop will exit when it collects same number of data pieces as tree entries.
|
|
// It notifies doneChan before exits or notify early with possible error.
|
|
infoMap := make(map[string][]interface{}, len(tes))
|
|
go func() {
|
|
i := 0
|
|
for info := range revChan {
|
|
if info.err != nil {
|
|
doneChan <- info.err
|
|
return
|
|
}
|
|
|
|
infoMap[info.entryName] = info.infos
|
|
i++
|
|
if i == len(tes) {
|
|
break
|
|
}
|
|
}
|
|
doneChan <- nil
|
|
}()
|
|
|
|
for i := range tes {
|
|
// When taskChan is idle (or has empty slots), put operation will not block.
|
|
// However when taskChan is full, code will block and wait any running goroutines to finish.
|
|
taskChan <- true
|
|
|
|
if tes[i].Type != ObjectCommit {
|
|
go func(i int) {
|
|
cinfo := commitInfo{entryName: tes[i].Name()}
|
|
c, err := commit.GetCommitByPath(filepath.Join(treePath, tes[i].Name()))
|
|
if err != nil {
|
|
cinfo.err = fmt.Errorf("GetCommitByPath (%s/%s): %v", treePath, tes[i].Name(), err)
|
|
} else {
|
|
cinfo.infos = []interface{}{tes[i], c}
|
|
}
|
|
revChan <- cinfo
|
|
<-taskChan // Clear one slot from taskChan to allow new goroutines to start.
|
|
}(i)
|
|
continue
|
|
}
|
|
|
|
// Handle submodule
|
|
go func(i int) {
|
|
cinfo := commitInfo{entryName: tes[i].Name()}
|
|
sm, err := commit.GetSubModule(path.Join(treePath, tes[i].Name()))
|
|
if err != nil && !IsErrNotExist(err) {
|
|
cinfo.err = fmt.Errorf("GetSubModule (%s/%s): %v", treePath, tes[i].Name(), err)
|
|
revChan <- cinfo
|
|
return
|
|
}
|
|
|
|
smURL := ""
|
|
if sm != nil {
|
|
smURL = sm.URL
|
|
}
|
|
|
|
c, err := commit.GetCommitByPath(filepath.Join(treePath, tes[i].Name()))
|
|
if err != nil {
|
|
cinfo.err = fmt.Errorf("GetCommitByPath (%s/%s): %v", treePath, tes[i].Name(), err)
|
|
} else {
|
|
cinfo.infos = []interface{}{tes[i], NewSubModuleFile(c, smURL, tes[i].ID.String())}
|
|
}
|
|
revChan <- cinfo
|
|
<-taskChan
|
|
}(i)
|
|
}
|
|
|
|
if err := <-doneChan; err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
commitsInfo := make([][]interface{}, len(tes))
|
|
for i := 0; i < len(tes); i++ {
|
|
commitsInfo[i] = infoMap[tes[i].Name()]
|
|
}
|
|
return commitsInfo, nil
|
|
}
|