Add wip diff cmd

Author: evanpurkhiser

cmd/dots/diff.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+var diffCmd = cobra.Command{
+	Use:   "diff [git-diff options] [filter...]",
+	Short: "Manage configuration of profiles and groups",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		files := []string{}
+		flags := []string{}
+
+		for _, arg := range args {
+			if arg == "--" {
+				continue
+			}
+
+			if strings.HasPrefix(arg, "-") {
+				flags = append(flags, arg)
+			} else {
+				files = append(files, arg)
+			}
+		}
+
+		sourceTmp, err := ioutil.TempDir("", "dots-source")
+		if err != nil {
+			return fmt.Errorf("Failed to create tmp directory: %s\n", err)
+		}
+
+		activeTmp, err := ioutil.TempDir("", "dots-active")
+		if err != nil {
+			return fmt.Errorf("Failed to create tmp directory: %s\n", err)
+		}
+
+		fmt.Println(sourceTmp, activeTmp)
+
+		exec := []string{"git", "diff", "--no-index"}
+		exec = append(exec, flags...)
+		exec = append(exec, "--", sourceTmp, activeTmp)
+
+		fmt.Println(exec)
+
+		return nil
+	},
+
+	Args: cobra.ArbitraryArgs,
+	DisableFlagsInUseLine: true,
+	DisableFlagParsing:    true,
+}