From 23593c3d2009ca87072c73f0d5050f9b2de638d4 Mon Sep 17 00:00:00 2001
From: filoozom <philippe@schommers.be>
Date: Sun, 2 Mar 2014 16:07:12 +0100
Subject: [PATCH 1/4] Update getHomeDir() to use "os/user"

os.Getenv("HOME") doesn't work properly on Windows (and maybe other systems?) and the package "os/user" gives us a convenient way to find the home directory for every OS.
---
 main.go | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/main.go b/main.go
index 069c6dd65..f9c7416e5 100644
--- a/main.go
+++ b/main.go
@@ -11,6 +11,7 @@ import (
 	_ "net/http/pprof"
 	"os"
 	"os/exec"
+	"os/user"
 	"path"
 	"runtime"
 	"runtime/debug"
@@ -561,9 +562,13 @@ func expandTilde(p string) string {
 }
 
 func getHomeDir() string {
-	home := os.Getenv("HOME")
-	if home == "" {
+	usr, err := user.Current()
+	if err != nil {
+		fatalln(err)
+	}
+
+	if usr.HomeDir == "" {
 		fatalln("No home directory?")
 	}
-	return home
+	return usr.HomeDir
 }

From 043dea760fd02bb712ce15e8dd4023d83d782379 Mon Sep 17 00:00:00 2001
From: filoozom <philippe@schommers.be>
Date: Sun, 2 Mar 2014 23:49:51 +0100
Subject: [PATCH 2/4] Set the right config and home dir for each OS

Use %AppData%\syncthing for the config files and %USERPROFILE%\Sync as sync folder for Windows.
---
 main.go | 41 +++++++++++++++++++++++++++++------------
 1 file changed, 29 insertions(+), 12 deletions(-)

diff --git a/main.go b/main.go
index f9c7416e5..172331470 100644
--- a/main.go
+++ b/main.go
@@ -11,7 +11,6 @@ import (
 	_ "net/http/pprof"
 	"os"
 	"os/exec"
-	"os/user"
 	"path"
 	"runtime"
 	"runtime/debug"
@@ -41,7 +40,7 @@ var (
 )
 
 func main() {
-	flag.StringVar(&confDir, "home", "~/.syncthing", "Set configuration directory")
+	flag.StringVar(&confDir, "home", getDefaultConfDir(), "Set configuration directory")
 	flag.StringVar(&trace, "debug.trace", "", "(connect,net,idx,file,pull)")
 	flag.StringVar(&profiler, "debug.profiler", "", "(addr)")
 	flag.BoolVar(&showVersion, "version", false, "Show version")
@@ -139,7 +138,7 @@ func main() {
 		cfg, err = readConfigXML(nil)
 		cfg.Repositories = []RepositoryConfiguration{
 			{
-				Directory: "~/Sync",
+				Directory: path.Join(getHomeDir(), "Sync"),
 				Nodes: []NodeConfiguration{
 					{NodeID: myID, Addresses: []string{"dynamic"}},
 				},
@@ -555,20 +554,38 @@ func ensureDir(dir string, mode int) {
 }
 
 func expandTilde(p string) string {
+	if runtime.GOOS == "windows" {
+		return p
+	}
+	
 	if strings.HasPrefix(p, "~/") {
-		return strings.Replace(p, "~", getHomeDir(), 1)
+		return strings.Replace(p, "~", getUnixHomeDir(), 1)
 	}
 	return p
 }
 
-func getHomeDir() string {
-	usr, err := user.Current()
-	if err != nil {
-		fatalln(err)
-	}
-
-	if usr.HomeDir == "" {
+func getUnixHomeDir() string {
+	home := os.Getenv("HOME")
+	if home == "" {
 		fatalln("No home directory?")
 	}
-	return usr.HomeDir
+	return home
+}
+
+func getHomeDir() string {
+	if runtime.GOOS == "windows" {
+		home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
+		if home == "" {
+			home = os.Getenv("USERPROFILE")
+		}
+		return home
+	}
+	return getUnixHomeDir()
+}
+
+func getDefaultConfDir() string {
+	if runtime.GOOS == "windows" {
+		return path.Join(os.Getenv("AppData"), "syncthing")
+	}
+	return expandTilde("~/.syncthing")
 }

From 8f41d90ab1e16a09e3f222a73557cbcc256e3b0a Mon Sep 17 00:00:00 2001
From: filoozom <philippe@schommers.be>
Date: Mon, 3 Mar 2014 08:46:20 +0100
Subject: [PATCH 3/4] Delete cfgFile before renaming it on Windows

---
 main.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/main.go b/main.go
index 172331470..4e4400e2a 100644
--- a/main.go
+++ b/main.go
@@ -328,6 +328,13 @@ func saveConfigLoop(cfgFile string) {
 			continue
 		}
 
+		if runtime.GOOS == "windows" {
+			err := os.Remove(cfgFile)
+			if err != nil && !os.IsNotExist(err) {
+				warnln(err)
+			}
+		}
+
 		err = os.Rename(cfgFile+".tmp", cfgFile)
 		if err != nil {
 			warnln(err)
@@ -557,7 +564,7 @@ func expandTilde(p string) string {
 	if runtime.GOOS == "windows" {
 		return p
 	}
-	
+
 	if strings.HasPrefix(p, "~/") {
 		return strings.Replace(p, "~", getUnixHomeDir(), 1)
 	}

From b4a1aadd1b5509f292982446617d6d6709ddfd9f Mon Sep 17 00:00:00 2001
From: filoozom <philippe@schommers.be>
Date: Mon, 3 Mar 2014 08:47:52 +0100
Subject: [PATCH 4/4] Fix divided by zero when the sync folder is empty (tot =
 0)

---
 model.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/model.go b/model.go
index 2617fb42a..75fd8c78e 100644
--- a/model.go
+++ b/model.go
@@ -191,7 +191,10 @@ func (m *Model) ConnectionStats() map[string]ConnectionInfo {
 			}
 		}
 
-		ci.Completion = int(100 * have / tot)
+		ci.Completion = 100
+		if tot != 0 {
+			ci.Completion = int(100 * have / tot)
+		}
 
 		res[node] = ci
 	}