From 04130fcb1579f2ed68baf909f8e243d0cee2f1fe Mon Sep 17 00:00:00 2001
From: Jakob Borg <jakob@nym.se>
Date: Thu, 22 May 2014 16:12:19 +0200
Subject: [PATCH] Allow GUI development with standard binary

---
 build.sh                         |  3 ++-
 cmd/syncthing/gui.go             | 43 +++++++++++++++++++++++++++++---
 cmd/syncthing/gui_development.go |  9 -------
 cmd/syncthing/gui_embedded.go    | 40 -----------------------------
 cmd/syncthing/main.go            |  6 +++--
 5 files changed, 45 insertions(+), 56 deletions(-)
 delete mode 100644 cmd/syncthing/gui_development.go
 delete mode 100644 cmd/syncthing/gui_embedded.go

diff --git a/build.sh b/build.sh
index dd3704306..3ce6ae1bf 100755
--- a/build.sh
+++ b/build.sh
@@ -88,7 +88,8 @@ case "$1" in
 		;;
 
 	guidev)
-		build -tags guidev
+		echo "Syncthing is already built for GUI developments. Try:"
+		echo "    STGUIASSETS=~/someDir/gui syncthing"
 		;;
 
 	test)
diff --git a/cmd/syncthing/gui.go b/cmd/syncthing/gui.go
index 49e5b8ca0..cf997588c 100644
--- a/cmd/syncthing/gui.go
+++ b/cmd/syncthing/gui.go
@@ -4,17 +4,21 @@ import (
 	"bytes"
 	"encoding/base64"
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"log"
 	"math/rand"
+	"mime"
 	"net"
 	"net/http"
+	"path/filepath"
 	"runtime"
 	"sync"
 	"time"
 
 	"crypto/tls"
 	"code.google.com/p/go.crypto/bcrypt"
+	"github.com/calmh/syncthing/auto"
 	"github.com/calmh/syncthing/config"
 	"github.com/calmh/syncthing/logger"
 	"github.com/calmh/syncthing/model"
@@ -31,8 +35,7 @@ var (
 	configInSync = true
 	guiErrors    = []guiError{}
 	guiErrorsMut sync.Mutex
-	static       = embeddedStatic()
-	staticFunc   = static.(func(http.ResponseWriter, *http.Request, *log.Logger))
+	static       func(http.ResponseWriter, *http.Request, *log.Logger)
 )
 
 const (
@@ -43,7 +46,7 @@ func init() {
 	l.AddHandler(logger.LevelWarn, showGuiError)
 }
 
-func startGUI(cfg config.GUIConfiguration, m *model.Model) error {
+func startGUI(cfg config.GUIConfiguration, assetDir string, m *model.Model) error {
 	var listener net.Listener
 	var err error
 	if cfg.UseTLS {
@@ -70,6 +73,12 @@ func startGUI(cfg config.GUIConfiguration, m *model.Model) error {
 		}
 	}
 
+	if len(assetDir) > 0 {
+		static = martini.Static(assetDir).(func(http.ResponseWriter, *http.Request, *log.Logger))
+	} else {
+		static = embeddedStatic()
+	}
+
 	router := martini.NewRouter()
 	router.Get("/", getRoot)
 	router.Get("/rest/version", restGetVersion)
@@ -108,7 +117,7 @@ func startGUI(cfg config.GUIConfiguration, m *model.Model) error {
 
 func getRoot(w http.ResponseWriter, r *http.Request) {
 	r.URL.Path = "/index.html"
-	staticFunc(w, r, nil)
+	static(w, r, nil)
 }
 
 func restMiddleware(w http.ResponseWriter, r *http.Request) {
@@ -340,3 +349,29 @@ func basic(username string, passhash string) http.HandlerFunc {
 		}
 	}
 }
+
+func embeddedStatic() func(http.ResponseWriter, *http.Request, *log.Logger) {
+	var modt = time.Now().UTC().Format(http.TimeFormat)
+
+	return func(res http.ResponseWriter, req *http.Request, log *log.Logger) {
+		file := req.URL.Path
+
+		if file[0] == '/' {
+			file = file[1:]
+		}
+
+		bs, ok := auto.Assets[file]
+		if !ok {
+			return
+		}
+
+		mtype := mime.TypeByExtension(filepath.Ext(req.URL.Path))
+		if len(mtype) != 0 {
+			res.Header().Set("Content-Type", mtype)
+		}
+		res.Header().Set("Content-Length", fmt.Sprintf("%d", len(bs)))
+		res.Header().Set("Last-Modified", modt)
+
+		res.Write(bs)
+	}
+}
diff --git a/cmd/syncthing/gui_development.go b/cmd/syncthing/gui_development.go
deleted file mode 100644
index 6c4952471..000000000
--- a/cmd/syncthing/gui_development.go
+++ /dev/null
@@ -1,9 +0,0 @@
-//+build guidev
-
-package main
-
-import "github.com/codegangsta/martini"
-
-func embeddedStatic() interface{} {
-	return martini.Static("gui")
-}
diff --git a/cmd/syncthing/gui_embedded.go b/cmd/syncthing/gui_embedded.go
deleted file mode 100644
index 4d1562d52..000000000
--- a/cmd/syncthing/gui_embedded.go
+++ /dev/null
@@ -1,40 +0,0 @@
-//+build !guidev
-
-package main
-
-import (
-	"fmt"
-	"log"
-	"mime"
-	"net/http"
-	"path/filepath"
-	"time"
-
-	"github.com/calmh/syncthing/auto"
-)
-
-func embeddedStatic() interface{} {
-	var modt = time.Now().UTC().Format(http.TimeFormat)
-
-	return func(res http.ResponseWriter, req *http.Request, log *log.Logger) {
-		file := req.URL.Path
-
-		if file[0] == '/' {
-			file = file[1:]
-		}
-
-		bs, ok := auto.Assets[file]
-		if !ok {
-			return
-		}
-
-		mtype := mime.TypeByExtension(filepath.Ext(req.URL.Path))
-		if len(mtype) != 0 {
-			res.Header().Set("Content-Type", mtype)
-		}
-		res.Header().Set("Content-Length", fmt.Sprintf("%d", len(bs)))
-		res.Header().Set("Last-Modified", modt)
-
-		res.Write(bs)
-	}
-}
diff --git a/cmd/syncthing/main.go b/cmd/syncthing/main.go
index 483402ee2..f0591d0f6 100644
--- a/cmd/syncthing/main.go
+++ b/cmd/syncthing/main.go
@@ -84,7 +84,9 @@ const (
                - "xdr"      (the xdr package)
                - "all"      (all of the above)
 
- STCPUPROFILE  Write CPU profile to the specified file.`
+ STCPUPROFILE  Write CPU profile to the specified file.
+
+ STGUIASSETS   Directory to load GUI assets from. Overrides compiled in assets.`
 )
 
 func main() {
@@ -279,7 +281,7 @@ func main() {
 			}
 
 			l.Infof("Starting web GUI on %s://%s:%d/", proto, hostShow, addr.Port)
-			err := startGUI(cfg.GUI, m)
+			err := startGUI(cfg.GUI, os.Getenv("STGUIASSETS"), m)
 			if err != nil {
 				l.Fatalln("Cannot start GUI:", err)
 			}