9fans.net/go@v0.0.5/acme/editinacme/main.go (about)

     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  package main
    14  
    15  import (
    16  	"flag"
    17  	"fmt"
    18  	"log"
    19  	"os"
    20  	"os/exec"
    21  	"path/filepath"
    22  
    23  	"9fans.net/go/acme"
    24  )
    25  
    26  func main() {
    27  	log.SetFlags(0)
    28  	log.SetPrefix("editinacme: ")
    29  	flag.Usage = func() {
    30  		fmt.Fprintf(os.Stderr, "usage: editinacme file\n")
    31  		os.Exit(2)
    32  	}
    33  	flag.Parse()
    34  	if flag.NArg() != 1 {
    35  		flag.Usage()
    36  	}
    37  
    38  	file := flag.Arg(0)
    39  
    40  	fullpath, err := filepath.Abs(file)
    41  	if err != nil {
    42  		log.Fatal(err)
    43  	}
    44  	file = fullpath
    45  
    46  	r, err := acme.Log()
    47  	if err != nil {
    48  		log.Fatal(err)
    49  	}
    50  
    51  	log.Printf("editing %s", file)
    52  
    53  	out, err := exec.Command("plumb", "-d", "edit", file).CombinedOutput()
    54  	if err != nil {
    55  		log.Fatalf("executing plumb: %v\n%s", err, out)
    56  	}
    57  
    58  	for {
    59  		ev, err := r.Read()
    60  		if err != nil {
    61  			log.Fatalf("reading acme log: %v", err)
    62  		}
    63  		if ev.Op == "del" && ev.Name == file {
    64  			break
    65  		}
    66  	}
    67  }