open admin UI on windows

Change-Id: I0df5042ddd9bb9058660468b862916a97b86c280

lib/go/camli/osutil/openurl.go

@@ -0,0 +1,36 @@
+/*
+Copyright 2011 Google Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package osutil
+
+import (
+	"exec"
+	"runtime"
+	"os"
+)
+
+func OpenURL(url string) os.Error {
+	if runtime.GOOS == "windows" {
+		return exec.Command("start", url).Run()
+	}
+
+	if runtime.GOOS == "darwin" {
+		return exec.Command("open", url).Run()
+	}
+
+	return exec.Command("xdg-open", url).Run()
+}
+

server/go/camlistored/camlistored.go

@@ -22,6 +22,7 @@ import (
 	"http"
 	"log"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"os"
 
@@ -194,6 +195,7 @@ func main() {
 		handler: make(map[string]interface{}),
 	}
 
+	uiPath := ""
 	for prefix, vei := range prefixes {
 		if !strings.HasPrefix(prefix, "/") {
 			exitFailure("prefix %q doesn't start with /", prefix)
@@ -221,8 +223,19 @@ func main() {
 			conf:   handlerArgs,
 		}
 		hl.config[prefix] = h
+
+		if handlerType == "ui" {
+			uiPath = prefix
+		}
 	}
 	hl.setupAll()
+	ws.Listen()
+
+	if runtime.GOOS == "windows" && uiPath != "" {
+		// Might be double-clicking an icon with no shell window?
+		// Just open the URL for them.
+		osutil.OpenURL(ws.BaseURL() + uiPath)
+	}
 	ws.Serve()
 }