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Update working directory of elvish-stub.

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This commit is contained in:
Qi Xiao 2016-02-22 18:42:10 +01:00
parent 158b4b82a5
commit 657448acf3
3 changed files with 34 additions and 16 deletions
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7
eval/eval.go
View File

@ -177,7 +177,12 @@ func (ev *Evaler) EvalInteractive(text string, n *parse.Chunk) error {
// XXX Should use fd of /dev/terminal instead of 0. // XXX Should use fd of /dev/terminal instead of 0.
if ev.Stub != nil && sys.IsATTY(0) { if ev.Stub != nil && sys.IsATTY(0) {
ev.Stub.SetTitle(summarize(text)) ev.Stub.SetTitle(summarize(text))
err := sys.Tcsetpgrp(0, ev.Stub.Process().Pid) dir, err := os.Getwd()
if err != nil {
dir = "/"
}
ev.Stub.Chdir(dir)
err = sys.Tcsetpgrp(0, ev.Stub.Process().Pid)
if err != nil { if err != nil {
fmt.Println("failed to put stub in foreground:", err) fmt.Println("failed to put stub in foreground:", err)
} }

7
stub/stub.go
View File

@ -96,7 +96,12 @@ func (stub *Stub) Terminate() {
// SetTitle sets the title of the stub. // SetTitle sets the title of the stub.
func (stub *Stub) SetTitle(s string) { func (stub *Stub) SetTitle(s string) {
stub.write.WriteString(s + "\n") s = strings.TrimSpace(s)
fmt.Fprintf(stub.write, "t %d %s\n", len(s), s)
}
func (stub *Stub) Chdir(dir string) {
fmt.Fprintf(stub.write, "d %d %s\n", len(dir), dir)
} }
// Signals returns a channel into which signals sent to the stub are relayed. // Signals returns a channel into which signals sent to the stub are relayed.

36
stubimpl/main.c
View File

@ -22,9 +22,7 @@ void handler(int signum) {
must(write(1, p, s+4-p) != -1, "write signum"); must(write(1, p, s+4-p) != -1, "write signum");
} }
enum { ARGV0BUF = 32 }; enum { ARGV0MAX = 32 };
char argv0buf[ARGV0BUF];
int main(int argc, char **argv) { int main(int argc, char **argv) {
int i; int i;
@ -36,18 +34,28 @@ int main(int argc, char **argv) {
must(write(1, "ok\n", 3) != -1, "write ok"); must(write(1, "ok\n", 3) != -1, "write ok");
while (1) { char op;
if (fgets(argv0buf, ARGV0BUF, stdin) == NULL) { int len;
if (feof(stdin)) { char *buf;
exit(0); int scanned;
} else { while ((scanned = scanf(" %c%d ", &op, &len)) == 2) {
exit(10); printf("op=%d, len=%d\n", op, len);
buf = malloc(len+1);
fgets(buf, len+1, stdin);
printf("buf=%s\n", buf);
if (op == 'd') {
// Change directory.
chdir(buf);
} else if (op == 't') {
if (len > ARGV0MAX) {
buf[ARGV0MAX] = '\0';
} }
strcpy(argv[0], buf);
} }
int n = strlen(argv0buf); free(buf);
if (n > 0 && argv0buf[n-1] == '\n') {
argv0buf[n-1] = '\0';
}
strcpy(argv[0], argv0buf);
} }
if (scanned != EOF) {
return 1;
}
return 0;
} }