Switch to storing To addresses as a slice

- Changes on-disk storage format
- Changes JSON API
- To and From values are now parsed/formatted by Go's mail.ParseAddress
  function
- Fixed bug in list-entry-template, was not escaping HTML characters
- Updated tests

rest/apiv1_controller.go

@@ -17,7 +17,7 @@ type JSONMessageHeaderV1 struct {
 	Mailbox string    `json:"mailbox"`
 	ID      string    `json:"id"`
 	From    string    `json:"from"`
-	To      string    `json:"to"`
+	To      []string  `json:"to"`
 	Subject string    `json:"subject"`
 	Date    time.Time `json:"date"`
 	Size    int64     `json:"size"`
@@ -28,7 +28,7 @@ type JSONMessageV1 struct {
 	Mailbox string             `json:"mailbox"`
 	ID      string             `json:"id"`
 	From    string             `json:"from"`
-	To    string               `json:"to"`
+	To      []string           `json:"to"`
 	Subject string             `json:"subject"`
 	Date    time.Time          `json:"date"`
 	Size    int64              `json:"size"`
@@ -112,7 +112,7 @@ func MailboxShowV1(w http.ResponseWriter, req *http.Request, ctx *httpd.Context)
 			Mailbox: name,
 			ID:      msg.ID(),
 			From:    msg.From(),
-			To:	     msg.To(),
+			To:      msg.To(),
 			Subject: msg.Subject(),
 			Date:    msg.Date(),
 			Size:    msg.Size(),

rest/apiv1_controller_test.go

@@ -95,7 +95,7 @@ func TestRestMailboxList(t *testing.T) {
 		Mailbox: "good",
 		ID:      "0001",
 		From:    "from1",
-		To:      "to1",
+		To:      []string{"to1"},
 		Subject: "subject 1",
 		Date:    time.Date(2012, 2, 1, 10, 11, 12, 253, time.FixedZone("PST", -800)),
 	}
@@ -103,7 +103,7 @@ func TestRestMailboxList(t *testing.T) {
 		Mailbox: "good",
 		ID:      "0002",
 		From:    "from2",
-		To:      "to1",
+		To:      []string{"to1"},
 		Subject: "subject 2",
 		Date:    time.Date(2012, 7, 1, 10, 11, 12, 253, time.FixedZone("PDT", -700)),
 	}

rest/testmocks_test.go

@@ -70,9 +70,9 @@ func (m *MockMessage) From() string {
 	return args.String(0)
 }
 
-func (m *MockMessage) To() string {
+func (m *MockMessage) To() []string {
 	args := m.Called()
-	return args.String(0)
+	return args.Get(0).([]string)
 }
 
 func (m *MockMessage) Date() time.Time {

rest/testutils_test.go

@@ -17,7 +17,7 @@ import (
 
 type InputMessageData struct {
 	Mailbox, ID, From, Subject string
-	To                         string
+	To                         []string
 	Date                       time.Time
 	Size                       int
 	Header                     mail.Header
@@ -81,8 +81,10 @@ func (d *InputMessageData) CompareToJSONHeaderMap(json interface{}) (errors []st
 		if msg, ok := isJSONStringEqual(fromKey, d.From, m[fromKey]); !ok {
 			errors = append(errors, msg)
 		}
-		if msg, ok := isJSONStringEqual(toKey, d.To, m[toKey]); !ok {
-			errors = append(errors, msg)
+		for i, inputTo := range d.To {
+			if msg, ok := isJSONStringEqual(toKey, inputTo, m[toKey].([]interface{})[i]); !ok {
+				errors = append(errors, msg)
+			}
 		}
 		if msg, ok := isJSONStringEqual(subjectKey, d.Subject, m[subjectKey]); !ok {
 			errors = append(errors, msg)