gistfile1.go

func getReposFiles(userName, repoName, commitId string, rpath string) ([]*RepoFile, error) {
	repo, err := git.OpenRepository(RepoPath(userName, repoName))
	if err != nil {
		return nil, err
	}

	commit, err := repo.GetCommit(commitId)
	if err != nil {
		return nil, err
	}

	var repodirs []*RepoFile
	var repofiles []*RepoFile
	commit.Tree.Walk(func(dirname string, entry *git.TreeEntry) int {
		if dirname == rpath {
			// TODO: size get method shoule be improved
			size, err := repo.ObjectSize(entry.Id)
			if err != nil {
				return 0
			}

			var cm = commit
			var i int
			for {
				i = i + 1
				//fmt.Println(".....", i, cm.Id(), cm.ParentCount())
				if cm.ParentCount() == 0 {
					break
				} else if cm.ParentCount() == 1 {
					pt, _ := repo.SubTree(cm.Parent(0).Tree, dirname)
					if pt == nil {
						break
					}
					pEntry := pt.EntryByName(entry.Name)
					if pEntry == nil || !pEntry.Id.Equal(entry.Id) {
						break
					} else {
						cm = cm.Parent(0)
					}
				} else {
					var emptyCnt = 0
					var sameIdcnt = 0
					var lastSameCm *git.Commit
					//fmt.Println(".....", cm.ParentCount())
					for i := 0; i < cm.ParentCount(); i++ {
						//fmt.Println("parent", i, cm.Parent(i).Id())
						p := cm.Parent(i)
						pt, _ := repo.SubTree(p.Tree, dirname)
						var pEntry *git.TreeEntry
						if pt != nil {
							pEntry = pt.EntryByName(entry.Name)
						}

						//fmt.Println("pEntry", pEntry)

						if pEntry == nil {
							emptyCnt = emptyCnt + 1
							if emptyCnt+sameIdcnt == cm.ParentCount() {
								if lastSameCm == nil {
									goto loop
								} else {
									cm = lastSameCm
									break
								}
							}
						} else {
							//fmt.Println(i, "pEntry", pEntry.Id, "entry", entry.Id)
							if !pEntry.Id.Equal(entry.Id) {
								goto loop
							} else {
								lastSameCm = cm.Parent(i)
								sameIdcnt = sameIdcnt + 1
								if emptyCnt+sameIdcnt == cm.ParentCount() {
									// TODO: now follow the first parent commit?
									cm = lastSameCm
									//fmt.Println("sameId...")
									break
								}
							}
						}
					}
				}
			}

		loop:

			rp := &RepoFile{
				entry,
				path.Join(dirname, entry.Name),
				size,
				repo,
				cm,
			}

			if entry.IsFile() {
				repofiles = append(repofiles, rp)
			} else if entry.IsDir() {
				repodirs = append(repodirs, rp)
			}
		}
		return 0
	})

	return append(repodirs, repofiles...), nil
}