1 files changed, 76 insertions, 0 deletions
diff --git a/.config/wmii-hg/rbar_util/main.go b/.config/wmii-hg/rbar_util/main.go
new file mode 100644
index 0000000..5fccd7e
--- /dev/null
+++ b/.config/wmii-hg/rbar_util/main.go
@@ -0,0 +1,76 @@
+package rbar_util
+
+import (
+	"os"
+	"io"
+	"fmt"
+)
+
+
+type Impl struct {
+	LeftClick func() error
+	MiddleClick func() error
+	RightClick func() error
+	ScrollUp func() error
+	ScrollDown func() error
+	Update func(tag string) error
+}
+
+func gerror(status int, err error, format string, a ...interface{}) {
+	msg := fmt.Sprintf(format, a...)
+	if err == nil {
+		fmt.Fprintf(os.Stderr, "%s: %s", os.Args[0], msg)
+	} else {
+		fmt.Fprintf(os.Stderr, "%s: %s: %v", os.Args[0], msg, err)
+	}
+	if status != 0 {
+		os.Exit(status)
+	}
+}
+
+func errusage(fmt string, a ...interface{}) {
+	gerror(0, nil, fmt, a...)
+	usage(os.Stderr)
+	os.Exit(2)
+}
+
+func usage(w io.Writer) {
+	fmt.Fprintf(w, "Usage: %[1]v NN_LABEL\n    or: %[1]v BTN_ID\n    or: %[1]v -h\n", os.Args[0])
+}
+
+func Main(impl Impl) {
+	if len(os.Args) != 2 {
+		errusage("exactly 1 argument expected, got %d", len(os.Args)-1)
+	}
+	var fn func() error
+	switch os.Args[1] {
+	case "-h":
+		usage(os.Stdout)
+		os.Exit(0)
+	case "1": fn = impl.LeftClick;
+	case "2": fn = impl.MiddleClick;
+	case "3": fn = impl.RightClick;
+	case "4": fn = impl.ScrollUp;
+	case "5": fn = impl.ScrollDown;
+	default:
+		arg := os.Args[1]
+		if len(arg) > 3 && '0' <= arg[0] && arg[0] <= '9' && '0' <= arg[1] && arg[1] <= '9' && arg[2] == '_' {
+			if impl.Update != nil {
+				fn = func() error { return impl.Update(arg)  }
+			}
+		} else {
+			errusage("invalid argument: %s\n", os.Args[1])
+		}			
+	}
+	if fn == nil {
+		fn = func() error { return nil }
+	}
+	if os.Getenv("XDG_RUNTIME_DIR") == "" {
+		gerror(6, nil, "XDG_RUNTIME_DIR isn't set")
+	}
+	err := fn()
+	if err != nil && err != NoRbar{
+		gerror(1, err, "")
+	}
+	os.Exit(0)
+}