func main() {
if os.Getenv("winid") == "" {
error("no winid, not acme window")
}
id, err := strconv.Atoi(os.Getenv("winid"))
if err != nil {
error("cannot parse winid %q: %s", os.Getenv("winid"), err)
}
w, err := acme.Open(id, nil)
if err != nil {
error("cannot open window %d: %s", id, err)
}
// Need the address file open to get it correctly
if _, _, err := w.ReadAddr(); err != nil {
error("cannot read addr: %s", err)
}
if err := w.Ctl("addr=dot"); err != nil {
error("cannot write ctl: %s", err)
}
start, end, err := w.ReadAddr()
if err != nil {
error("cannot read addr: %s", err)
}
if len(os.Args) > 2 && start == end {
fmt.Printf(os.Args[2], start)
} else if len(os.Args) > 1 {
fmt.Printf(os.Args[1], start, end)
} else {
fmt.Printf("%d,%d\n", start, end)
}
}
func openWin() (*acme.Win, error) {
id, err := strconv.Atoi(os.Getenv("winid"))
if err != nil {
return nil, err
}
return acme.Open(id, nil)
}
func main() {
log.SetFlags(0)
log.SetPrefix("")
wid, err := strconv.Atoi(os.Getenv("winid"))
if err != nil {
log.Fatal("unable to find window")
}
win, err := acme.Open(wid, nil)
if err != nil {
log.Fatalf("unable to open window: %v", err)
}
wis, _ := acme.Windows()
var name string
for _, wi := range wis {
if wi.ID == wid {
name = wi.Name
break
}
}
cmd := exec.Command("aspell", "-a")
cmd.Stdin = prefixer.New(bodyReader{win}, "^")
stdout, err := cmd.StdoutPipe()
if err != nil {
log.Fatalf("unable to create pipe")
}
cmd.Start()
p := printer{name}
go p.scan(stdout)
if err := cmd.Wait(); err != nil && err != io.EOF {
log.Fatalf("error running \"aspell -a\": %v", err)
}
}
func open(filepath string) (w *acme.Win, err error) {
if id, ok := existingWindows[filepath]; ok {
if w, err = acme.Open(id, nil); err != nil {
return w, err
}
} else if w, err = acme.New(); err == nil {
w.Name(filepath)
w.Write("tag", []byte("Put "))
w.Ctl("get")
}
return w, err
}
//taken from godef
func acmeCurrentWin() (*acme.Win, error) {
winid := os.Getenv("winid")
if winid == "" {
return nil, fmt.Errorf("$winid not set - not running inside acme?")
}
id, err := strconv.Atoi(winid)
if err != nil {
return nil, fmt.Errorf("invalid $winid %q", winid)
}
win, err := acme.Open(id, nil)
if err != nil {
return nil, fmt.Errorf("cannot open acme window: %v", err)
}
return win, nil
}
func reformat(id int, name string) {
w, err := acme.Open(id, nil)
if err != nil {
log.Print(err)
return
}
defer w.CloseFiles()
old, err := ioutil.ReadFile(name)
if err != nil {
//log.Print(err)
return
}
new, err := exec.Command("goimports", name).CombinedOutput()
if err != nil {
// Probably a syntax error, use the compiler for better message.
// For now use 'go build file.go' and strip the package header.
// We run it in /var/run so that paths do not get shortened
// (assuming /var/run exists and no one is editing go files under that path).
// A better fix to both would be to use go tool 6g, but we don't know
// whether 6g is the right architecture. Could parse 'go env' output.
// Or maybe the go command should have 'go tool compile' and 'go tool link'.
cmd := exec.Command("go", "build", name)
cmd.Dir = "/var/run"
out, _ := cmd.CombinedOutput()
start := []byte("# command-line-arguments\n")
if !bytes.HasPrefix(out, start) {
fmt.Fprintf(os.Stderr, "goimports %s: %v\n%s", name, err, new)
return
}
fmt.Fprintf(os.Stderr, "%s", out)
return
}
if bytes.Equal(old, new) {
return
}
if !*gofmt {
oldTop, err := readImports(bytes.NewReader(old), true)
if err != nil {
//log.Print(err)
return
}
newTop, err := readImports(bytes.NewReader(new), true)
if err != nil {
//log.Print(err)
return
}
if bytes.Equal(oldTop, newTop) {
return
}
w.Addr("0,#%d", utf8.RuneCount(oldTop))
w.Write("data", newTop)
return
}
f, err := ioutil.TempFile("", "Imports")
if err != nil {
log.Print(err)
return
}
if _, err := f.Write(new); err != nil {
log.Print(err)
return
}
tmp := f.Name()
f.Close()
defer os.Remove(tmp)
diff, _ := exec.Command("9", "diff", name, tmp).CombinedOutput()
w.Write("ctl", []byte("mark"))
w.Write("ctl", []byte("nomark"))
diffLines := strings.Split(string(diff), "\n")
for i := len(diffLines) - 1; i >= 0; i-- {
line := diffLines[i]
if line == "" {
continue
}
if line[0] == '<' || line[0] == '-' || line[0] == '>' {
continue
}
j := 0
for j < len(line) && line[j] != 'a' && line[j] != 'c' && line[j] != 'd' {
j++
}
if j >= len(line) {
log.Printf("cannot parse diff line: %q", line)
break
}
oldStart, oldEnd := parseSpan(line[:j])
newStart, newEnd := parseSpan(line[j+1:])
if oldStart == 0 || newStart == 0 {
continue
}
switch line[j] {
case 'a':
err := w.Addr("%d+#0", oldStart)
if err != nil {
log.Print(err)
break
}
w.Write("data", findLines(new, newStart, newEnd))
case 'c':
err := w.Addr("%d,%d", oldStart, oldEnd)
if err != nil {
log.Print(err)
break
}
w.Write("data", findLines(new, newStart, newEnd))
case 'd':
err := w.Addr("%d,%d", oldStart, oldEnd)
if err != nil {
log.Print(err)
break
}
w.Write("data", nil)
}
}
}