func Directories(me *utils.Repository, path string, t time.Time) ([]string, error) {
workingdir := filepath.Join(me.BasePath, types.DATA, types.INCREMENTS, path)
resultset := make([]string, 0)
times, err := me.TimeStamps()
if err != nil {
return nil, fmt.Errorf("unable to retrieve timestamps", types.DATA, err)
}
directories, err := ioutil.ReadDir(workingdir)
if err != nil {
return nil, fmt.Errorf("unable to parse directory", workingdir, err)
}
metafiles := make([]string, 0, len(directories))
for _, e := range directories {
if e.IsDir() {
continue
}
if filepath.Ext(e.Name()) != ".dir" && filepath.Ext(e.Name()) != ".missing" {
continue
}
unquote, err := utils.Unquote(e.Name())
if err != nil {
return nil, err
}
metafiles = append(metafiles, unquote)
}
for i, _ := range directories {
if !directories[i].IsDir() {
continue
}
lastchange := ""
addflag := false
for _, e := range times {
addflag = false
unquoted, err := utils.Unquote(e)
if err != nil {
return nil, err
}
parsedtime, err := time.Parse(types.TIMESTAMP_FMT, unquoted)
if err != nil {
return nil, fmt.Errorf("unable to parse time", e, err)
}
// t >= parsedtime
if t.After(parsedtime) {
exists := utils.StringInSlice(directories[i].Name()+"."+unquoted+types.DIR, metafiles)
if !exists {
continue
}
lastchange = unquoted
continue
}
direxists := utils.StringInSlice(directories[i].Name()+"."+unquoted+types.DIR, metafiles)
missingexists := utils.StringInSlice(directories[i].Name()+"."+unquoted+types.MISSING, metafiles)
if t.Equal(parsedtime) {
if !direxists && !missingexists {
// if there is no such files, there is nothing to do
continue
} else if !missingexists && direxists {
// there exists a .dir file in present time
lastchange = unquoted
continue
} else if missingexists && !direxists {
// there exist a .missing file in present time
// file was created right on requested point of time, we take it
resultset = append(resultset, directories[i].Name())
lastchange = ""
addflag = true
break
}
}
if t.Before(parsedtime) {
if !direxists && !missingexists {
// if there is non of such files, there is nothing to do
continue
} else if !direxists && missingexists {
// .missing exists, that means directory was created after current point of time, we dont take it
// toogled addflag, with an empty lastchange means the directory will not be added
addflag = true
break
} else if direxists && !missingexists {
// there exists a change on that directory after the current point of time, so it has to be available
resultset = append(resultset, directories[i].Name())
lastchange = ""
addflag = true
break
}
}
}
// if addflag is not set we have to check if the last change was a delete
if !addflag && lastchange != "" {
nextSnap, err := me.NextSnapshot(lastchange)
if err != nil {
return nil, fmt.Errorf("unable to retrieve next snapshot", err)
}
snapshot, err := os.Open(filepath.Join(me.DirectoryStructure, nextSnap+types.DIREXT))
if err != nil {
return nil, fmt.Errorf("unable to open directorie structure file")
}
if !me.Contains(filepath.Join(path, directories[i].Name()), snapshot) {
continue
}
if err != nil {
return nil, fmt.Errorf("unable to stat in directory", filepath.Join(me.DirectoryStructure, nextSnap+".structure", path))
}
}
if addflag && lastchange == "" {
continue
}
// passed all checks, add it
resultset = append(resultset, directories[i].Name())
}
return resultset, nil
}
func Files(me *utils.Repository, path string, t time.Time) ([]string, error) {
workingdir := filepath.Join(me.BasePath, types.DATA, types.INCREMENTS, path)
times, err := me.TimeStamps()
if err != nil {
return nil, fmt.Errorf("Unable to retrieve timestamps", types.DATA, err)
}
_, err = os.Stat(filepath.Join(me.BasePath, path))
files := []os.FileInfo{}
if err == nil {
files, err = ioutil.ReadDir(filepath.Join(me.BasePath, path))
if err != nil {
return nil, fmt.Errorf("unable to parse directory", filepath.Join(me.BasePath, path), err)
}
}
increments, err := ioutil.ReadDir(filepath.Join(me.BasePath, types.DATA, types.INCREMENTS, path))
if err != nil {
return nil, fmt.Errorf("unable to parse directory", filepath.Join(me.BasePath, types.DATA, types.INCREMENTS, path), err)
}
resultsetphy, err := FilterFiles(files, increments, times, t, workingdir)
if err != nil {
return nil, err
}
// deleted files are not to be found in the physical representation of files
var filesinc []os.FileInfo
for i, _ := range increments {
if increments[i].IsDir() {
continue
}
if filepath.Ext(utils.TrimExt(increments[i].Name())) != ".snapshot" {
continue
}
needle := utils.TrimExt(utils.TrimExt(utils.TrimExt(increments[i].Name())))
d, err := os.Stat(filepath.Join(me.BasePath, types.DATA, types.INCREMENTS, path, needle))
if err == nil && d.IsDir() {
// points to a directory, ignore this file
continue
} else if err != nil && !os.IsNotExist(err) {
// real error case
return nil, fmt.Errorf("unable to stat file", needle, err)
}
// check if resultphy already contains this file
flag := false
for _, e := range resultsetphy {
if e == needle {
flag = true
break
}
}
if !flag {
filesinc = append(filesinc, &types.RdiffFileInfo{Name_: needle, IsDir_: false})
}
}
resultsetinc, err := FilterFiles(filesinc, increments, times, t, workingdir)
if err != nil {
return nil, err
}
resultset := make([]string, len(resultsetphy)+len(resultsetinc))
copy(resultset, resultsetphy)
copy(resultset[len(resultsetphy):], resultsetinc)
return resultset, nil
}
func rdiffElements(w http.ResponseWriter, r *http.Request) {
dest := ""
if r.FormValue("dest") == "" && len(utils.SplitPath(html.UnescapeString(r.FormValue("path")))) > 0 {
// we want to go up one directory
dest = filepath.Dir(html.UnescapeString(r.FormValue("path")))
} else {
dest = filepath.Join(html.UnescapeString(r.FormValue("path")), html.UnescapeString(r.FormValue("dest")))
}
level := len(utils.SplitPath(dest))
var data []byte
var elements []element
if level == 0 {
elements = make([]element, len(repos))
for i, e := range repos {
elements[i] = element{e.Name, "DIR", "0", "0", true, dest}
}
}
if level == 1 {
name := utils.SplitPath(dest)[0]
path := filepath.Join("repositories", name)
repo := utils.Repository{
filepath.Join(path, "basepath"),
filepath.Join(path, "directorystructure"),
filepath.Join(path, "origin"),
name,
}
times, err := repo.TimeStamps()
if err != nil {
log.Panic(err)
}
elements = make([]element, len(times))
for i, e := range times {
u, err := utils.Unquote(e)
if err != nil {
log.Panic(err)
}
elements[i] = element{u, "DIR", "0", "0", true, dest}
}
}
if level > 1 {
name := utils.SplitPath(dest)[0]
path := filepath.Join("repositories", name)
repo := utils.Repository{
filepath.Join(path, "basepath"),
filepath.Join(path, "directorystructure"),
filepath.Join(path, "origin"),
name,
}
var p string
if len(utils.SplitPath(dest)) == 2 {
p = ""
} else {
for _, e := range utils.SplitPath(dest)[2:] {
p = filepath.Join(p, e)
}
}
time_, err := utils.Unquote(utils.SplitPath(dest)[1])
if err != nil {
log.Panic(err)
}
timepoint, err := time.Parse(types.TIMESTAMP_FMT, time_)
if err != nil {
log.Panic(err)
}
dirs, err := incs.Directories(&repo, p, timepoint)
if err != nil {
log.Panic(err)
}
files, err := incs.Files(&repo, p, timepoint)
if err != nil {
log.Panic(err)
}
elements = make([]element, len(dirs)+len(files))
for i, e := range dirs {
elements[i] = element{e, "DIR", "0", "0", true, dest}
}
for i, e := range files {
elements[i+len(dirs)] = element{e, filepath.Ext(e), "0", "0", false, dest}
}
if len(elements) == 0 {
elements = []element{element{"", "DUMMY0", "0", "0", false, dest}}
}
}
data, err := json.Marshal(elements)
if err != nil {
log.Panic("unable to marshal table rows", err)
}
w.Write(data)
}