From 2dba8527a9eff1f9931ccbb25df34dcb618460a7 Mon Sep 17 00:00:00 2001
From: nsz <nsz@port70.net>
Date: Thu, 8 Dec 2011 03:26:48 +0100
Subject: [PATCH] add NotFoundError to store

---
 store/store.go | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/store/store.go b/store/store.go
index 8bdf317..2a6d2f8 100644
--- a/store/store.go
+++ b/store/store.go
@@ -17,6 +17,14 @@ type Conn struct {
 	path string
 }
 
+type NotFoundError struct {
+	path string
+}
+
+func (e NotFoundError) Error() string {
+	return "not found: " + e.path
+}
+
 func Open(root string) (c *Conn, err error) {
 	c = new(Conn)
 	c.path, err = filepath.Abs(root)
@@ -31,7 +39,13 @@ func Open(root string) (c *Conn, err error) {
 }
 
 func (c *Conn) Get(name, k string) (v []byte, err error) {
-	return ioutil.ReadFile(filepath.Join(c.path, name, k))
+	v, err = ioutil.ReadFile(filepath.Join(c.path, name, k))
+	if err != nil {
+		if p, ok := err.(*os.PathError); ok && p.Err == os.ENOENT {
+			err = NotFoundError{name+"/"+k}
+		}
+	}
+	return
 }
 
 func (c *Conn) Ensure(name string) (err error) {
-- 
2.20.1