added list subcommand

also cleaned up stray code. Reorganized code to remove awkward handling of
push/pull at bottom.

main.go

@@ -11,14 +11,14 @@ import (
 	"os/user"
 )
 
-const usage = "saves <push|pull|link>"
-
-type link struct {
-	src string
-	dst string
-}
+const usage = "saves <list|push|pull|link>"
 
 func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintf(os.Stderr, "%s\n", usage)
+		os.Exit(1)
+	}
+
 	u, err := user.Current()
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "cannot calculate home dir: %v", err)
@@ -27,18 +27,30 @@ func main() {
 	docs := fmt.Sprintf("%s/Documents", u.HomeDir)
 	saves := fmt.Sprintf("%s/Documents/saves", u.HomeDir)
 	appSupport := fmt.Sprintf("%s/Library/Application Support", u.HomeDir)
-	if len(os.Args) != 2 {
-		fmt.Fprintf(os.Stderr, "%s\n", usage)
-		os.Exit(1)
-	}
 
 	var cmd *exec.Cmd
 	switch os.Args[1] {
-	case "pull":
-		cmd = exec.Command("rsync", "-auv", "sj.mcquay.me:~/docs/saves", fmt.Sprintf("%s/", docs))
-	case "push":
-		cmd = exec.Command("rsync", "-auv", fmt.Sprintf("%s/saves", docs), "sj.mcquay.me:~/docs/")
-	case "link":
+	case "pull", "push":
+		if os.Args[1] == "push" {
+			cmd = exec.Command("rsync", "-auv", "sj.mcquay.me:~/docs/saves", fmt.Sprintf("%s/", docs))
+		} else {
+			cmd = exec.Command("rsync", "-auv", fmt.Sprintf("%s/saves", docs), "sj.mcquay.me:~/docs/")
+		}
+
+		if cmd == nil {
+			fmt.Fprintf(os.Stderr, "failed to populate command\n")
+			os.Exit(1)
+		}
+		var so, se bytes.Buffer
+		cmd.Stdout = &so
+		cmd.Stderr = &se
+		if rc := cmd.Run(); rc != nil {
+			log.Printf("cmd: %+v", cmd)
+			log.Printf("so: %s", so.Bytes())
+			log.Printf("se: %s", se.Bytes())
+			log.Printf("rc: %+v", rc)
+		}
+	case "link", "ln":
 		dirs, err := ioutil.ReadDir(saves)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "could not read saves dir: %+v\n", err)
@@ -57,23 +69,22 @@ func main() {
 				os.Exit(1)
 			}
 		}
-		return
+	case "list", "ls":
+		dirs, err := ioutil.ReadDir(saves)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "could not read saves dir: %+v\n", err)
+			os.Exit(1)
+		}
+		for _, dir := range dirs {
+			status := "l"
+			dst := fmt.Sprintf("%s/%s", appSupport, dir.Name())
+			if _, err := os.Lstat(dst); os.IsNotExist(err) {
+				status = "m"
+			}
+			fmt.Printf("%s %s\n", status, dir.Name())
+		}
 	default:
 		fmt.Fprintf(os.Stderr, "%s\n", usage)
 		os.Exit(1)
 	}
-
-	if cmd == nil {
-		fmt.Fprintf(os.Stderr, "failed to populate command\n")
-		os.Exit(1)
-	}
-	var so, se bytes.Buffer
-	cmd.Stdout = &so
-	cmd.Stderr = &se
-	if rc := cmd.Run(); rc != nil {
-		log.Printf("cmd: %+v", cmd)
-		log.Printf("so: %s", so.Bytes())
-		log.Printf("se: %s", se.Bytes())
-		log.Printf("rc: %+v", rc)
-	}
 }