func serve(idx *index.Index) error {
fid, err := plumb.Open("editclass", plan9.OREAD)
if err != nil {
return err
}
defer fid.Close()
r := bufio.NewReader(fid)
w, err := plumb.Open("send", plan9.OWRITE)
if err != nil {
return err
}
defer w.Close()
for {
m := plumb.Message{}
err := m.Recv(r)
if err != nil {
return err
}
log.Printf("Received from plumber: %s\n", m)
name := string(m.Data)
var get *index.GetResult
for _, c := range candidatesOf(name) {
if get = idx.Get(c); get != nil {
break
}
}
if get == nil {
log.Printf("Found no results for: %s\n", name)
continue
}
if get.Path != "" {
if err := plumbFile(&m, w, name, get.Path); err != nil {
log.Printf("%s: %s\n", get.Path, err)
}
} else if get.Children != nil {
if err := plumbDir(idx, get.Children, w); err != nil {
log.Printf("error opening dir: %s\n", err)
}
} else {
log.Printf("Result was empty: %s\n", name)
}
}
return nil
}
// TODO(mpl): maybe break this one in a fold and unfold functions
func onLook(charaddr string) {
// reconstruct full path and check if file or dir
addr := "#" + charaddr + "+1-"
b, err := readLine(addr)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
return
}
depth, line := getDepth(b)
fullpath := path.Join(root, getParents(charaddr, depth, 1), line)
fi, err := os.Stat(fullpath)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
return
}
if !fi.IsDir() {
// not a dir -> send that file to the plumber
port, err := plumb.Open("send", plan9.OWRITE)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
return
}
defer port.Close()
msg := &plumb.Message{
Src: "xplor",
Dst: "",
Dir: "/",
Type: "text",
Data: []byte(fullpath),
}
if err := msg.Send(port); err != nil {
fmt.Fprintf(os.Stderr, err.Error())
}
return
}
folded, err := isFolded(charaddr)
if err != nil {
fmt.Fprint(os.Stderr, err.Error())
return
}
if folded {
// print dir contents
addr = "#" + charaddr + "+2-1-#0"
err = w.Addr("%s", addr)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error()+addr)
return
}
err = printDirContents(fullpath, depth+1)
if err != nil {
fmt.Fprint(os.Stderr, err.Error())
}
} else {
// fold, ie delete lines below dir until we hit a dir of the same depth
addr = "#" + charaddr + "+-"
nextdepth := depth + 1
nextline := 1
for nextdepth > depth {
err = w.Addr("%s", addr)
if err != nil {
fmt.Fprint(os.Stderr, err.Error())
return
}
b, err = readLine(addr)
if err != nil {
fmt.Fprint(os.Stderr, err.Error())
return
}
nextdepth, _ = getDepth(b)
nextline++
addr = "#" + charaddr + "+" + fmt.Sprint(nextline-1)
}
nextline--
addr = "#" + charaddr + "+-#0,#" + charaddr + "+" + fmt.Sprint(nextline-2)
err = w.Addr("%s", addr)
if err != nil {
fmt.Fprint(os.Stderr, err.Error())
return
}
w.Write("data", []byte(""))
}
}