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Watch: set SAVED_PATH env variable #129

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Watch: set SAVED_PATH env variable #129

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15 changes: 8 additions & 7 deletions acme/Watch/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,7 @@ import (

var args []string
var win *acme.Win
var needrun = make(chan bool, 1)
var needrun = make(chan string, 1)
var recursive = flag.Bool("r", false, "watch all subdirectories recursively")

func usage() {
Expand Down Expand Up @@ -82,7 +82,7 @@ func main() {
win.Fprintf("tag", "Get Kill Quit ")
win.Fprintf("body", "%% %s\n", strings.Join(args, " "))

needrun <- true
needrun <- ""
go events()
go runner(pwd)

Expand All @@ -97,7 +97,7 @@ func main() {
}
if ev.Op == "put" && (path.Dir(ev.Name) == pwd || *recursive && strings.HasPrefix(ev.Name, pwdSlash)) {
select {
case needrun <- true:
case needrun <- ev.Name:
default:
}
// slow down any runaway loops
Expand All @@ -112,7 +112,7 @@ func events() {
case 'x', 'X': // execute
if string(e.Text) == "Get" {
select {
case needrun <- true:
case needrun <- "":
default:
}
continue
Expand Down Expand Up @@ -153,7 +153,7 @@ var run struct {
}

func runner(dir string) {
for range needrun {
for path := range needrun {
run.Lock()
run.id++
id := run.id
Expand All @@ -167,7 +167,7 @@ func runner(dir string) {
lastcmd = nil

runSetup(id)
go runBackground(id, dir)
go runBackground(id, dir, path)
}
}

Expand Down Expand Up @@ -206,7 +206,7 @@ func runSetup(id int) {
win.Addr("#0")
}

func runBackground(id int, dir string) {
func runBackground(id int, dir, path string) {
buf := make([]byte, 4096)
run.Lock()
for {
Expand Down Expand Up @@ -260,6 +260,7 @@ func runBackground(id int, dir string) {

cmd := exec.Command(rc, "-c", string(line))
cmd.Dir = dir
cmd.Env = append(cmd.Environ(), "SAVED_PATH="+path)
r, w, err := os.Pipe()
if err != nil {
log.Fatal(err)
Expand Down