feat: long names in questions cut with … and the window as wide as its words; SSH dialog hides «Вход» for a saved host and says «подключение…» quietly; zip and unzip on SSH hosts without them through Python's zipfile

internal/agent/sshfs.go

@@ -139,7 +139,8 @@ func (a *Agent) sshfsOpen(ctx context.Context, t proto.SSHTarget) (any, error) {
 	}
 	c := &sshfsConn{client: client, target: t, last: time.Now()}
 	out, _ := sshRun(client, "stat -c %F / >/dev/null 2>&1 && echo GNU; stat -f %HT / >/dev/null 2>&1 && echo BSD; "+
-		"command -v zip >/dev/null 2>&1 && echo ZIP; command -v unzip >/dev/null 2>&1 && echo UNZIP; echo \"$HOME\"")
+		"command -v zip >/dev/null 2>&1 && echo ZIP; command -v unzip >/dev/null 2>&1 && echo UNZIP; "+
+		"command -v python3 >/dev/null 2>&1 && echo PY; echo \"$HOME\"")
 	lines := strings.Split(strings.TrimSpace(out), "\n")
 	switch {
 	case strings.Contains(out, "GNU"):
@@ -158,7 +159,7 @@ func (a *Agent) sshfsOpen(ctx context.Context, t proto.SSHTarget) (any, error) {
 	sshfsJanitor.Do(func() { go sshfsSweep() })
 	// zip and unzip, where the host has them, for the pane's buttons.
 	return map[string]any{"id": id, "home": c.home,
-		"zip": hasLine(lines, "ZIP"), "unzip": hasLine(lines, "UNZIP")}, nil
+		"zip": hasLine(lines, "ZIP") || hasLine(lines, "PY"), "unzip": hasLine(lines, "UNZIP") || hasLine(lines, "PY")}, nil
 }
 
 func hasLine(lines []string, w string) bool {
@@ -410,7 +411,10 @@ func zipCommand(paths []string, dest string) (string, error) {
 		}
 		names[i] = shq("./" + path.Base(p))
 	}
-	return "cd -- " + shq(dir) + " && zip -r -q -y " + shq(path.Clean(dest)) + " " + strings.Join(names, " "), nil
+	// zip where the host has it, else Python's zipfile, which most have.
+	items := strings.Join(names, " ")
+	return "cd -- " + shq(dir) + " && if command -v zip >/dev/null 2>&1; then zip -r -q -y " + shq(path.Clean(dest)) + " " + items + "; " +
+		"else python3 -m zipfile -c " + shq(path.Clean(dest)) + " " + items + "; fi", nil
 }
 
 // unzipCommand unpacks the archive p into dest (its own folder if empty),
@@ -419,7 +423,8 @@ func unzipCommand(p, dest string) string {
 	if dest == "" {
 		dest = path.Dir(path.Clean(p))
 	}
-	return "unzip -o -q " + shq(path.Clean(p)) + " -d " + shq(path.Clean(dest))
+	return "if command -v unzip >/dev/null 2>&1; then unzip -o -q " + shq(path.Clean(p)) + " -d " + shq(path.Clean(dest)) + "; " +
+		"else python3 -m zipfile -e " + shq(path.Clean(p)) + " " + shq(path.Clean(dest)) + "; fi"
 }
 
 // writeCommand writes stdin to p through a file beside it, so a broken

internal/agent/sshfs_test.go

@@ -114,7 +114,8 @@ func TestZipCommand(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	want := `cd -- '/srv' && zip -r -q -y '/tmp/x.zip' './a b' './it'\''s'`
+	want := `cd -- '/srv' && if command -v zip >/dev/null 2>&1; then zip -r -q -y '/tmp/x.zip' './a b' './it'\''s'; ` +
+		`else python3 -m zipfile -c '/tmp/x.zip' './a b' './it'\''s'; fi`
 	if cmd != want {
 		t.Fatalf("got  %s\nwant %s", cmd, want)
 	}
@@ -124,7 +125,7 @@ func TestZipCommand(t *testing.T) {
 	if _, err := zipCommand(nil, "/t.zip"); err == nil {
 		t.Fatal("no items: want an error")
 	}
-	if got := unzipCommand("/srv/a.zip", ""); got != `unzip -o -q '/srv/a.zip' -d '/srv'` {
+	if got := unzipCommand("/srv/a.zip", ""); got != `if command -v unzip >/dev/null 2>&1; then unzip -o -q '/srv/a.zip' -d '/srv'; else python3 -m zipfile -e '/srv/a.zip' '/srv'; fi` {
 		t.Fatalf("unzip: %s", got)
 	}
 }