Example #1
0
// Add to pred to exclude suffixes of name from find.
func (ns *NS) exclSuffixes(name string, fpred *pred.Pred) *pred.Pred {
	var xpreds []*pred.Pred
	for _, p := range ns.pref {
		if p.name != name && zx.HasPrefix(p.name, name) {
			x, _ := pred.New(fmt.Sprintf("path=%q", p.name))
			xpreds = append(xpreds, x)
		}
	}
	if len(xpreds) > 0 {
		xpred := xpreds[0]
		if len(xpreds) > 1 {
			xpred = pred.Or(xpreds...)
		}
		prune, _ := pred.New("prune")
		if fpred == nil {
			fpred, _ = pred.New("true")
		}
		fpred = pred.Or(pred.And(xpred, prune), fpred)
	}
	return fpred
}
Example #2
0
func (t *Lfs) matchDir(d zx.Dir, fpred string) error {
	if fpred == "" {
		return nil
	}
	p, err := pred.New(fpred)
	if err != nil {
		return err
	}
	match, _, err := p.EvalAt(d, 0)
	if err != nil {
		return err
	}
	if !match {
		return ErrNoMatch
	}
	return nil
}
Example #3
0
func (zd *Dir) match(fpred string) error {
	if fpred == "" {
		return nil
	}
	p, err := pred.New(fpred)
	if err != nil {
		return err
	}
	match, _, err := p.EvalAt(zd.d, 0)
	if err != nil {
		return err
	}
	if !match {
		return ErrNoMatch
	}
	return nil
}
Example #4
0
func (t *Fs) matchDir(rid string, d zx.Dir, fpred string) error {
	if fpred == "" {
		return nil
	}
	if d == nil {
		d = zx.Dir{
			"path": rid,
			"name": path.Base(rid),
			"type": "-",
		}
	}
	p, err := pred.New(fpred)
	if err != nil {
		return err
	}
	match, _, err := p.EvalAt(d, 0)
	if err != nil {
		return err
	}
	if !match {
		return ErrNoMatch
	}
	return nil
}
Example #5
0
// d is a dup and can be changed.
func (f *mFile) find(d zx.Dir, p *pred.Pred, spref, dpref string, lvl int, c chan<- zx.Dir, ai *auth.Info) {
	match, pruned, err := p.EvalAt(d, lvl)
	f.dprintf("find  at %d %s\n\t%v\n\t%v %v %v\n\n",
		lvl, d.Long(), p, match, pruned, err)
	if pruned {
		if !match {
			d["err"] = "pruned"
		}
		c <- d
		return
	}
	if d["type"] == "d" && err == nil {
		f.mlk.Lock()
		if !f.t.NoPermCheck && !f.d.CanWalk(ai) {
			err = dbg.ErrPerm
		}
		f.mlk.Unlock()
	}
	if err != nil {
		d["err"] = err.Error()
		c <-d
		return
	}
	if d["rm"] != "" {
		return
	}
	if match {
		if ok := c <- d; !ok {
			return
		}
	}
	if d["type"] != "d" {
		return
	}
	f.clk.Lock()
	child := make([]*mFile, len(f.child))
	copy(child, f.child)
	f.clk.Unlock()
	if f.name == "/" {
		nc := []*mFile{
			&mFile{name: "Ctl", d: ctldir.Dup(), t: f.t},
		}
		nc[0].d["tpath"] = f.t.path
		child = append(nc, child...)
	}
	for _, cf := range child {
		cf.mlk.Lock()
		cd := cf.d.Dup()
		cf.mlk.Unlock()
		// fmt.Printf("child %s\n", cd)
		if cd["rm"] != "" {
			continue
		}
		if spref != dpref {
			cpath := cd["path"]
			suff := zx.Suffix(cpath, spref)
			cd["path"] = zx.Path(dpref, suff)
		}
		cf.find(cd, p, spref, dpref, lvl+1, c, ai)
	}
}

func (t *Fs) Find(rid, fpred, spref, dpref string, depth int) <-chan zx.Dir {
	t.dprintf("find %s '%s' '%s' '%s' %d\n", rid, fpred, spref, dpref, depth)
	cs := t.IOstats.NewCall(zx.Sfind)
	dc := make(chan zx.Dir)
	go func() {
		rid, err := zx.AbsPath(rid)
		if err != nil {
			cs.End(err != nil)
			t.dprintf("find %s: %s\n", rid, err)
			close(dc, err)
			return
		}
		f, _, err := t.walk(rid, nil)
		if err != nil {
			cs.End(err != nil)
			t.dprintf("find %s: %s\n", rid, err)
			close(dc, err)
			return
		}
		p, err := pred.New(fpred)
		if err != nil {
			cs.End(err != nil)
			t.dprintf("find %s: %s\n", rid, err)
			close(dc, err)
			return
		}
		cs.Sending()
		f.mlk.Lock()
		d := f.d.Dup()
		f.mlk.Unlock()
		if spref != dpref {
			suff := zx.Suffix(rid, spref)
			d["path"] = zx.Path(dpref, suff)
		}
		f.find(d, p, spref, dpref, depth, dc, t.ai)
		cs.End(err != nil)
		t.dprintf("find %s: ok\n", rid)
		close(dc)
	}()
	return dc
}

func (t *Fs) FindGet(rid, fpred, spref, dpref string, depth int) <-chan zx.DirData {
	t.dprintf("findget %s '%s' '%s' '%s' %d\n", rid, fpred, spref, dpref, depth)
	gc := make(chan zx.DirData)
	cs := t.IOstats.NewCall(zx.Sfindget)
	go func() {
		dc := t.Find(rid, fpred, spref, dpref, depth) // BUG: will stat a Sfind
		for d := range dc {
			g := zx.DirData{Dir: d}
			var datac chan []byte
			if d["err"]=="" && d["type"]=="-" {
				datac = make(chan []byte)
				g.Datac = datac
			}
			if ok := gc <- g; !ok {
				close(dc, cerror(gc))
				break
			}
			if datac != nil {
				err := t.get(d["spath"], 0, zx.All, datac, nil)
				close(datac, err)
			}
		}
		err := cerror(dc)
		cs.End(err != nil)
		if err != nil {
			t.dprintf("find %s: %s\n", rid, err)
		} else {
			t.dprintf("find %s: ok\n", rid)
		}
		close(gc, err)
	}()
	return gc
}

func (t *Fs) Dump(w io.Writer) {
	if t == nil {
		fmt.Fprintf(w, "<nil tree>\n")
		return
	}
	fmt.Fprintf(w, "tree [%s] path %s\n", t.name, t.path)
	t.root.Dump(w, 0)
	fmt.Fprintf(w, "\n")
}

func (f *mFile) Dump(w io.Writer, lvl int) {
	tabs := strings.Repeat("    ", lvl)
	if f == nil {
		fmt.Fprintf(w, "%s<nil file>\n", tabs)
		return
	}
	d := f.d.Dup()
	if d["path"] == "/" {
		d["size"] = "0"
	}
	fmt.Fprintf(w, "%s%s\n", tabs, d.TestFmt())
	if d["type"] != "d"  {
		fmt.Fprintf(w, "%s  %d bytes\n", tabs, f.data.Len())
		return
	}
	for _, c := range f.child {
		c.Dump(w, lvl+1)
	}
	
}
Example #6
0
// d is a dup and can be changed.
func (t *Fs) find(f File, d zx.Dir, p *pred.Pred, spref, dpref string, lvl int,
	c chan<- zx.Dir, ai *auth.Info) {
	match, pruned, err := p.EvalAt(d, lvl)
	t.dprintf("find  at %v\n\t%v\n\t%v %v %v\n\n", d, p, match, pruned, err)
	if pruned {
		if !match {
			d["err"] = "pruned"
		}
		c <- d
		return
	}
	if d["type"] == "d" && err == nil {
		if !t.NoPermCheck && !d.CanWalk(ai) {
			err = dbg.ErrPerm
		}
	}
	if err != nil {
		d["err"] = err.Error()
		c <-d
		return
	}
	if d["rm"] != "" {
		return
	}
	if match {
		if ok := c <- d; !ok {
			return
		}
	}
	if d["type"] != "d" || f == nil {
		return
	}
	wf, ok := f.(Walker)
	if !ok {
		return
	}
	ns, err := wf.Getdir()
	if err != nil {
		return
	}
	sort.Sort(sort.StringSlice(ns))
	if d["name"] == "/" {
		cd := ctldir.Dup()
		if spref != dpref {
			cpath := cd["path"]
			suff := zx.Suffix(cpath, spref)
			cd["path"] = zx.Path(dpref, suff)
		}
		t.find(nil, cd, p, spref, dpref, lvl+1, c, ai)
	}
	for _, cnm := range ns {
		cf, err := wf.Walk(cnm)
		if err != nil {
			continue
		}
		cp := zx.Path(d["path"], cnm)
		cd, err := t.statf(cf, cp)
		if err != nil || cd["rm"] != "" {
			continue
		}
		cd = cd.Dup()
		if spref != dpref {
			cpath := cd["path"]
			suff := zx.Suffix(cpath, spref)
			cd["path"] = zx.Path(dpref, suff)
		}
		t.find(cf, cd, p, spref, dpref, lvl+1, c, ai)
	}
}

func (t *Fs) Find(rid, fpred, spref, dpref string, depth int) <-chan zx.Dir {
	t.dprintf("find %s '%s' '%s' '%s' %d\n", rid, fpred, spref, dpref, depth)
	cs := t.IOstats.NewCall(zx.Sfind)
	dc := make(chan zx.Dir)
	go func() {
		rid, err := zx.AbsPath(rid)
		if err != nil {
			cs.End(err != nil)
			t.dprintf("find %s: %s\n", rid, err)
			close(dc, err)
			return
		}
		f, err := t.walk(rid)
		if err != nil {
			cs.End(err != nil)
			t.dprintf("find %s: %s\n", rid, err)
			close(dc, err)
			return
		}
		p, err := pred.New(fpred)
		if err != nil {
			cs.End(err != nil)
			t.dprintf("find %s: %s\n", rid, err)
			close(dc, err)
			return
		}
		d, err := t.statf(f, rid)
		if err != nil {
			cs.End(err != nil)
			t.dprintf("find %s: %s\n", rid, err)
			close(dc, err)
			return
		}
		d = d.Dup()
		if spref != dpref {
			suff := zx.Suffix(rid, spref)
			d["path"] = zx.Path(dpref, suff)
		}
		t.find(f, d, p, spref, dpref, depth, dc, t.ai)
		cs.End(err != nil)
		t.dprintf("find %s: ok\n", rid)
		close(dc)
	}()
	return dc
}

// used only by findget
func (t *Fs) get(rid string, datac chan<- []byte) error {
	f, err := t.walk(rid)
	if err != nil {
		return err
	}
	gf, ok := f.(Getter)
	if !ok {
		return nil
	}
	return gf.Get(0, -1, datac)
}

func (t *Fs) FindGet(rid, fpred, spref, dpref string, depth int) <-chan zx.DirData {
	t.dprintf("findget %s '%s' '%s' '%s' %d\n", rid, fpred, spref, dpref, depth)
	gc := make(chan zx.DirData)
	cs := t.IOstats.NewCall(zx.Sfindget)
	go func() {
		dc := t.Find(rid, fpred, spref, dpref, depth) // BUG: will stat a Sfind
		for d := range dc {
			g := zx.DirData{Dir: d}
			var datac chan []byte
			if d["err"] == "" && !t.NoPermCheck &&
				d["type"] != "d" && !d.CanRead(t.ai) {
				d["err"] = dbg.ErrPerm.Error()
				
			}
			if d["err"]=="" && d["type"]!="d" {
				datac = make(chan []byte)
				g.Datac = datac
			}
			if ok := gc <- g; !ok {
				close(dc, cerror(gc))
				break
			}
			if datac != nil {
				err := t.get(d["spath"], datac)
				close(datac, err)
			}
		}
		err := cerror(dc)
		cs.End(err != nil)
		if err != nil {
			t.dprintf("find %s: %s\n", rid, err)
		} else {
			t.dprintf("find %s: ok\n", rid)
		}
		close(gc, err)
	}()
	return gc
}