Directory structure for list cmd

1 files changed, 45 insertions, 2 deletions

diff --git a/main.go b/main.go
index 8bc5cc2..9bd4a38 100644
--- a/main.go
+++ b/main.go
@@ -1,7 +1,50 @@
 package main
 
-import "fmt"
+import (
+	"os"
+	"io"
+	"fmt"
+        "golang.furkistan.com/zfdiff/cmds"
+)
+
+func printUsage(w io.Writer) {
+	fmt.Fprintf (w, "usage: %s command args ...                   \n", os.Args[0])
+	fmt.Fprintln(w, "  help                                                     ")
+	fmt.Fprintln(w, "  version                                                  ")
+	fmt.Fprintln(w, "  list [-paths|-p] <reference>                             ")
+	fmt.Fprintln(w, "  diff [-walk|-w]  <snap-ish>..<snap-ish> <reference>      ")
+	fmt.Fprintln(w, "  cat  <snap-ish> <reference>                              ")
+	fmt.Fprintln(w, "  overwrite [-backup|-b] <snap-ish> <reference>            ")
+}
+
+func dieUsage() {
+	printUsage(os.Stderr)
+	os.Exit(1)
+}
 
 func main() {
-  fmt.Println("Hello");
+
+	if len(os.Args) < 2 {
+	  dieUsage()
+	}
+  
+	subcommand := os.Args[1]
+	subargs := os.Args[2:]
+  
+	switch subcommand {
+	  case "list":
+		cmd.List(subargs)
+	  case "overwrite":
+		//overwrite(subargs)
+	  case "cat":
+		//cmd.Cat(subargs)
+	  case "diff":
+		//diff(subargs)
+	  case "-h", "-help", "--help", "help":
+		printUsage(os.Stdout)
+	  default:
+		fmt.Fprintf(os.Stderr, "unrecognized command %s\n", subcommand)
+		dieUsage()
+	}
+  
 }