/
main.go
160 lines (149 loc) · 3.2 KB
/
main.go
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package main
import (
"bufio"
"flag"
"fmt"
"io"
"log"
"path/filepath"
"sort"
"strings"
"9fans.net/go/plan9"
"9fans.net/go/plumb"
"github.com/edma2/navigator/index"
"github.com/edma2/navigator/zinc"
"github.com/edma2/navigator/zinc/fsevents"
)
func plumbDir(idx *index.Index, children []string, w io.Writer) error {
dirs := make(map[string]int)
for _, c := range children {
if get := idx.Get(c); get != nil {
if get.Path != "" && !strings.Contains(get.Path, "/src/test/") {
dirs[filepath.Dir(get.Path)]++
}
}
}
// guess dir to plumb by most common dir
max := 0
dir := ""
for d, n := range dirs {
if n > max {
max = n
dir = d
}
}
log.Println(dirs)
log.Println(dir)
if dir == "" {
return nil
}
return plumbDir1(dir, w)
}
func plumbDir1(dir string, w io.Writer) error {
m := plumb.Message{
Src: "navigator",
Dst: "edit",
Type: "text",
Data: []byte(dir),
}
log.Printf("Sending to plumber: %s\n", m)
return m.Send(w)
}
func leafOf(name string) string {
if i := strings.LastIndexByte(name, '.'); i != -1 && i+1 <= len(name) {
return name[i+1:]
}
return ""
}
func candidatesOf(name string) []string {
candidates := []string{}
elems := strings.Split(name, ".")
for i, _ := range elems {
candidates = append(candidates, strings.Join(elems[0:i+1], "."))
}
sort.Sort(sort.Reverse(sort.StringSlice(candidates)))
return candidates
}
func plumbFile(m *plumb.Message, w io.Writer, name, path string) error {
m.Src = "navigator"
m.Dst = ""
m.Data = []byte(path)
var attr *plumb.Attribute
for attr = m.Attr; attr != nil; attr = attr.Next {
if attr.Name == "addr" {
break
}
}
if attr == nil {
if leafName := leafOf(name); leafName != "" {
addr := fmt.Sprintf("/(trait|class|object|interface)[ ]*%s/", leafName)
m.Attr = &plumb.Attribute{Name: "addr", Value: addr, Next: m.Attr}
}
}
log.Printf("Sending to plumber: %s\n", m)
return m.Send(w)
}
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
}
func Main() error {
flag.Parse()
paths := flag.Args()
if len(paths) == 0 {
return nil
}
for _, path := range paths {
log.Println("Watching " + path)
}
idx := index.NewIndex()
for _, path := range paths {
idx.Watch(zinc.Watch(fsevents.Watch(path)))
}
return serve(idx)
}
func main() {
if err := Main(); err != nil {
log.Fatal(err)
}
}