add mgconfig conversion to lib

cmd/mg/main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/taigrr/mg/parse"
+)
+
+var jobs = flag.Int("j", 1, "number of jobs to run in parallel")
+
+func main() {
+	flag.Parse()
+	conf, err := parse.LoadMGConfig()
+	if err != nil {
+		if os.IsNotExist(err) {
+			// Try to load mr config instead
+			mrconf, err := parse.LoadMRConfig()
+			if err != nil {
+				log.Println(err)
+				os.Exit(1)
+			}
+
+			conf = mrconf.ToMGConfig()
+			log.Println("migrated mrconfig to mgconfig")
+			err = conf.Save()
+			if err != nil {
+				log.Println(err)
+				os.Exit(1)
+			}
+		}
+	}
+
+	// fmt.Println(conf)
+}
+
+func Register() {
+}