From ff3a4264cf66148da027fca563e77bf725c8cd78 Mon Sep 17 00:00:00 2001
From: James Hillyerd <james@hillyerd.com>
Date: Sat, 6 Oct 2012 20:35:33 -0700
Subject: [PATCH] utils

A couple email address related utils
---
 .gitignore                 |  6 ++++++
 app/inbucket/utils.go      | 28 ++++++++++++++++++++++++++++
 app/inbucket/utils_test.go | 28 ++++++++++++++++++++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 app/inbucket/utils.go
 create mode 100644 app/inbucket/utils_test.go

diff --git a/.gitignore b/.gitignore
index 0026861..49c434d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,9 @@ _cgo_export.*
 _testmain.go
 
 *.exe
+
+# vim swp files
+*.swp
+
+# revel tmp
+app/tmp
diff --git a/app/inbucket/utils.go b/app/inbucket/utils.go
new file mode 100644
index 0000000..8ae9130
--- /dev/null
+++ b/app/inbucket/utils.go
@@ -0,0 +1,28 @@
+package inbucket
+
+import (
+  "crypto/sha1"
+  "fmt"
+  "io"
+  "strings"
+)
+
+// Take "user+ext@host.com" and return "user", aka the mailbox we'll store it in
+func ParseMailboxName(emailAddress string) (result string) {
+  result = strings.ToLower(emailAddress)
+  if idx := strings.Index(result, "@"); idx > -1 {
+    result = result[0:idx]
+  } 
+  if idx := strings.Index(result, "+"); idx > -1 {
+    result = result[0:idx]
+  } 
+  return result
+}
+
+// Take a mailbox name and hash it into the directory we'll store it in
+func HashMailboxName(mailbox string) string {
+  h := sha1.New()
+  io.WriteString(h, mailbox)
+  return fmt.Sprintf("%x", h.Sum(nil))
+}
+
diff --git a/app/inbucket/utils_test.go b/app/inbucket/utils_test.go
new file mode 100644
index 0000000..af12e16
--- /dev/null
+++ b/app/inbucket/utils_test.go
@@ -0,0 +1,28 @@
+package inbucket
+
+import "testing"
+
+func TestParseMailboxName(t *testing.T) {
+  in, out := "MailBOX", "mailbox"
+  if x := ParseMailboxName(in); x != out {
+    t.Errorf("ParseMailboxName(%v) = %v, want %v", in, x, out)
+  }
+
+  in, out = "MailBox@Host.Com", "mailbox"
+  if x := ParseMailboxName(in); x != out {
+    t.Errorf("ParseMailboxName(%v) = %v, want %v", in, x, out)
+  }
+
+  in, out = "Mail+extra@Host.Com", "mail"
+  if x := ParseMailboxName(in); x != out {
+    t.Errorf("ParseMailboxName(%v) = %v, want %v", in, x, out)
+  }
+}
+
+func TestHashMailboxName(t *testing.T) {
+  in, out := "mail", "1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e"
+  if x := HashMailboxName(in); x != out {
+    t.Errorf("HashMailboxName(%v) = %v, want %v", in, x, out)
+  }
+}
+