Add fix for config parsing into code

This implements a comment from Luzifer/cloudkeys-go#17 in order not to
have to change the `config.go` when deploying

Signed-off-by: Knut Ahlers <knut@ahlers.me>

config.go

@@ -1,10 +1,6 @@
 package main
 
-import (
-	"net/url"
-
-	"github.com/Luzifer/rconfig"
-)
+import "net/url"
 
 type config struct {
 	// General Config
@@ -22,9 +18,3 @@ type config struct {
 func (c config) ParsedStorage() (*url.URL, error) {
 	return url.Parse(c.Storage)
 }
-
-func loadConfig() *config {
-	cfg := &config{}
-	rconfig.Parse(cfg)
-	return cfg
-}

config_default.go

@@ -0,0 +1,11 @@
+// +build !appengine
+
+package main
+
+import "github.com/Luzifer/rconfig"
+
+func loadConfig() *config {
+	cfg := &config{}
+	rconfig.Parse(cfg)
+	return cfg
+}

config_gae.go

@@ -0,0 +1,21 @@
+// +build appengine
+
+package main
+
+import (
+	"os"
+
+	"github.com/Luzifer/rconfig"
+)
+
+func loadConfig() *config {
+	cfg := &config{}
+
+	// Workaround as GAE supplies more parameters than expected.
+	// This removes all CLI flags for parsing and relies only on parsing
+	// environment variables.
+	os.Args = []string{os.Args[0]}
+
+	rconfig.Parse(cfg)
+	return cfg
+}