1// Copyright 2015 The Go Authors.  All rights reserved.
 2// Use of this source code is governed by a BSD-style
 3// license that can be found in the LICENSE file.
 4
 5// Editinacme can be used as $EDITOR in a Unix environment.
 6//
 7// Usage:
 8//
 9//	editinacme <file>
10//
11// Editinacme uses the plumber to ask acme to open the file,
12// waits until the file's acme window is deleted, and exits.
13
14package main
15
16import (
17	"flag"
18	"fmt"
19	"log"
20	"os"
21	"os/exec"
22	"path/filepath"
23
24	"9fans.net/go/acme"
25)
26
27func main() {
28	log.SetFlags(0)
29	log.SetPrefix("editinacme: ")
30	flag.Usage = func() {
31		fmt.Fprintf(os.Stderr, "usage: editinacme file\n")
32		os.Exit(2)
33	}
34	flag.Parse()
35	if flag.NArg() != 1 {
36		flag.Usage()
37	}
38
39	file := flag.Arg(0)
40
41	fullpath, err := filepath.Abs(file)
42	if err != nil {
43		log.Fatal(err)
44	}
45	file = fullpath
46
47	r, err := acme.Log()
48	if err != nil {
49		log.Fatal(err)
50	}
51
52	log.Printf("editing %s", file)
53
54	out, err := exec.Command("plumb", "-d", "edit", file).CombinedOutput()
55	if err != nil {
56		log.Fatalf("executing plumb: %v\n%s", err, out)
57	}
58
59	for {
60		ev, err := r.Read()
61		if err != nil {
62			log.Fatalf("reading acme log: %v", err)
63		}
64		if ev.Op == "del" && ev.Name == file {
65			break
66		}
67	}
68}