From d368a0d3e79bab4e5da4872934240489a691b875 Mon Sep 17 00:00:00 2001
From: Laria Carolin Chabowski <laria@laria.me>
Date: Tue, 8 Aug 2017 08:06:09 +0200
Subject: Add restore-dir command

---
 main.go        |  9 +++++++--
 restore_dir.go | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 write_dir.go   | 37 ++++++++++++++++++++++---------------
 3 files changed, 77 insertions(+), 17 deletions(-)
 create mode 100644 restore_dir.go

diff --git a/main.go b/main.go
index 9057231..b0f3f6b 100644
--- a/main.go
+++ b/main.go
@@ -12,7 +12,7 @@ type subcmd func(args []string) int
 
 var subcmds = map[string]subcmd{
 	"write-dir":       WriteDir,
-	"restore-dir":     notImplementedYet,
+	"restore-dir":     RestoreDir,
 	"take-snapshot":   notImplementedYet,
 	"create-snapshot": notImplementedYet,
 	"list-snapshots":  notImplementedYet,
@@ -56,7 +56,12 @@ func Main() int {
 	}
 	defer objectstore.Close()
 
-	remaining := flag.Args()
+	remaining := make([]string, 0)
+	for _, arg := range flag.Args() {
+		if arg != "" {
+			remaining = append(remaining, arg)
+		}
+	}
 
 	var cmd subcmd
 	if len(remaining) > 0 {
diff --git a/restore_dir.go b/restore_dir.go
new file mode 100644
index 0000000..65f2785
--- /dev/null
+++ b/restore_dir.go
@@ -0,0 +1,48 @@
+package main
+
+import (
+	"code.laria.me/petrific/backup"
+	"code.laria.me/petrific/fs"
+	"code.laria.me/petrific/objects"
+	"fmt"
+	"os"
+)
+
+func RestoreDir(args []string) int {
+	usage := subcmdUsage("restore-dir", "directory object-id", nil)
+
+	if len(args) != 2 {
+		usage()
+		return 2
+	}
+
+	dir_path, err := abspath(args[0])
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "restore-dir: %s\n", err)
+		return 1
+	}
+
+	d, err := fs.OpenOSFile(dir_path)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "restore-dir: %s\n", err)
+		return 1
+	}
+
+	if d.Type() != fs.FDir {
+		fmt.Fprintf(os.Stderr, "restore-dir: %s is not a directory\n", dir_path)
+		return 1
+	}
+
+	id, err := objects.ParseObjectId(args[1])
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "restore-dir: %s\n", err)
+		return 1
+	}
+
+	if err := backup.RestoreDir(objectstore, id, d); err != nil {
+		fmt.Fprintf(os.Stderr, "restore-dir: %s\n", err)
+		return 1
+	}
+
+	return 0
+}
diff --git a/write_dir.go b/write_dir.go
index cc148c2..e701a56 100644
--- a/write_dir.go
+++ b/write_dir.go
@@ -9,38 +9,45 @@ import (
 	"path"
 )
 
+func abspath(p string) (string, error) {
+	if p[0] != '/' {
+		pwd, err := os.Getwd()
+		if err != nil {
+			return "", fmt.Errorf("abspath(%s): %s", p, err)
+		}
+		p = pwd + "/" + p
+	}
+	return path.Clean(p), nil
+}
+
 func WriteDir(args []string) int {
-	if len(args) != 1 || len(args[0]) == 0 {
-		subcmdUsage("write-dir", "directory", nil)()
+	usage := subcmdUsage("write-dir", "directory", nil)
+
+	if len(args) != 1 {
+		usage()
 		return 2
 	}
 
-	dir_path := args[0]
-	// Make path absolute
-	if dir_path[0] != '/' {
-		pwd, err := os.Getwd()
-		if err != nil {
-			fmt.Fprintf(os.Stderr, "write-dir: %s", err)
-			return 1
-		}
-		dir_path = pwd + "/" + dir_path
+	dir_path, err := abspath(args[0])
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "write-dir: %s\n", err)
+		return 1
 	}
-	dir_path = path.Clean(dir_path)
 
 	d, err := fs.OpenOSFile(dir_path)
 	if err != nil {
-		fmt.Fprintf(os.Stderr, "write-dir: %s", err)
+		fmt.Fprintf(os.Stderr, "write-dir: %s\n", err)
 		return 1
 	}
 
 	if d.Type() != fs.FDir {
-		fmt.Fprintf(os.Stderr, "write-dir: %s is not a directory", dir_path)
+		fmt.Fprintf(os.Stderr, "write-dir: %s is not a directory\n", dir_path)
 		return 1
 	}
 
 	id, err := backup.WriteDir(objectstore, dir_path, d, cache.NopCache{})
 	if err != nil {
-		fmt.Fprintf(os.Stderr, "write-dir: %s", err)
+		fmt.Fprintf(os.Stderr, "write-dir: %s\n", err)
 		return 1
 	}
 
-- 
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