chore: fix more capitalization style warnings (#487)

Signed-off-by: James Hillyerd <james@hillyerd.com>

cmd/inbucket/main.go

@@ -173,7 +173,7 @@ func openLog(level string, logfile string, json bool) (close func(), err error)
 	case "error":
 		zerolog.SetGlobalLevel(zerolog.ErrorLevel)
 	default:
-		return nil, fmt.Errorf("Log level %q not one of: debug, info, warn, error", level)
+		return nil, fmt.Errorf("log level %q not one of: debug, info, warn, error", level)
 	}
 	close = func() {}
 	var w io.Writer

pkg/extension/async_broker_test.go

@@ -47,13 +47,13 @@ func TestAsyncBrokerEmitCallsMultipleListeners(t *testing.T) {
 	want := "hi"
 	broker.Emit(&want)
 
-	first_got, err := first()
+	firstGot, err := first()
 	require.NoError(t, err)
-	assert.Equal(t, want, *first_got)
+	assert.Equal(t, want, *firstGot)
 
-	second_got, err := second()
+	secondGot, err := second()
 	require.NoError(t, err)
-	assert.Equal(t, want, *second_got)
+	assert.Equal(t, want, *secondGot)
 }
 
 func TestAsyncBrokerAddingDuplicateNameReplacesPrevious(t *testing.T) {
@@ -66,13 +66,13 @@ func TestAsyncBrokerAddingDuplicateNameReplacesPrevious(t *testing.T) {
 	want := "hi"
 	broker.Emit(&want)
 
-	first_got, err := first()
+	firstGot, err := first()
 	require.Error(t, err)
-	assert.Nil(t, first_got)
+	assert.Nil(t, firstGot)
 
-	second_got, err := second()
+	secondGot, err := second()
 	require.NoError(t, err)
-	assert.Equal(t, want, *second_got)
+	assert.Equal(t, want, *secondGot)
 }
 
 func TestAsyncBrokerRemovingListenerSuccessful(t *testing.T) {
@@ -86,13 +86,13 @@ func TestAsyncBrokerRemovingListenerSuccessful(t *testing.T) {
 	want := "hi"
 	broker.Emit(&want)
 
-	first_got, err := first()
+	firstGot, err := first()
 	require.Error(t, err)
-	assert.Nil(t, first_got)
+	assert.Nil(t, firstGot)
 
-	second_got, err := second()
+	secondGot, err := second()
 	require.NoError(t, err)
-	assert.Equal(t, want, *second_got)
+	assert.Equal(t, want, *secondGot)
 }
 
 func TestAsyncBrokerRemovingMissingListener(t *testing.T) {

pkg/extension/broker_test.go

@@ -28,13 +28,13 @@ func TestBrokerEmitCallsMultipleListeners(t *testing.T) {
 	broker := &extension.EventBroker[string, bool]{}
 
 	// Setup listeners.
-	var first_got, second_got string
+	var firstGot, secondGot string
 	first := func(s string) *bool {
-		first_got = s
+		firstGot = s
 		return nil
 	}
 	second := func(s string) *bool {
-		second_got = s
+		secondGot = s
 		return nil
 	}
 
@@ -43,11 +43,11 @@ func TestBrokerEmitCallsMultipleListeners(t *testing.T) {
 
 	want := "hi"
 	broker.Emit(&want)
-	if first_got != want {
+	if firstGot != want {
-		t.Errorf("first got %q, want %q", first_got, want)
+		t.Errorf("first got %q, want %q", firstGot, want)
 	}
-	if second_got != want {
+	if secondGot != want {
-		t.Errorf("second got %q, want %q", second_got, want)
+		t.Errorf("second got %q, want %q", secondGot, want)
 	}
 }
 
@@ -77,13 +77,13 @@ func TestBrokerAddingDuplicateNameReplacesPrevious(t *testing.T) {
 	broker := &extension.EventBroker[string, bool]{}
 
 	// Setup listeners.
-	var first_got, second_got string
+	var firstGot, secondGot string
 	first := func(s string) *bool {
-		first_got = s
+		firstGot = s
 		return nil
 	}
 	second := func(s string) *bool {
-		second_got = s
+		secondGot = s
 		return nil
 	}
 
@@ -92,11 +92,11 @@ func TestBrokerAddingDuplicateNameReplacesPrevious(t *testing.T) {
 
 	want := "hi"
 	broker.Emit(&want)
-	if first_got != "" {
+	if firstGot != "" {
-		t.Errorf("first got %q, want empty string", first_got)
+		t.Errorf("first got %q, want empty string", firstGot)
 	}
-	if second_got != want {
+	if secondGot != want {
-		t.Errorf("second got %q, want %q", second_got, want)
+		t.Errorf("second got %q, want %q", secondGot, want)
 	}
 }
 
@@ -104,13 +104,13 @@ func TestBrokerRemovingListenerSuccessful(t *testing.T) {
 	broker := &extension.EventBroker[string, bool]{}
 
 	// Setup listeners.
-	var first_got, second_got string
+	var firstGot, secondGot string
 	first := func(s string) *bool {
-		first_got = s
+		firstGot = s
 		return nil
 	}
 	second := func(s string) *bool {
-		second_got = s
+		secondGot = s
 		return nil
 	}
 
@@ -120,11 +120,11 @@ func TestBrokerRemovingListenerSuccessful(t *testing.T) {
 
 	want := "hi"
 	broker.Emit(&want)
-	if first_got != "" {
+	if firstGot != "" {
-		t.Errorf("first got %q, want empty string", first_got)
+		t.Errorf("first got %q, want empty string", firstGot)
 	}
-	if second_got != want {
+	if secondGot != want {
-		t.Errorf("second got %q, want %q", second_got, want)
+		t.Errorf("second got %q, want %q", secondGot, want)
 	}
 }
 

pkg/extension/luahost/bind_inboundmessage.go

@@ -55,7 +55,7 @@ func unwrapInboundMessage(lv lua.LValue) (*event.InboundMessage, error) {
 		}
 	}
 
-	return nil, fmt.Errorf("Expected InboundMessage, got %q", lv.Type().String())
+	return nil, fmt.Errorf("expected InboundMessage, got %q", lv.Type().String())
 }
 
 // Gets a field value from InboundMessage user object.  This emulates a Lua table,

pkg/extension/luahost/lua.go

@@ -37,7 +37,7 @@ func New(conf config.Lua, extHost *extension.Host) (*Host, error) {
 		logger.Info().Msg("Script file not found")
 		return nil, nil
 	} else if fi.IsDir() {
-		return nil, fmt.Errorf("Lua script %v is a directory", scriptPath)
+		return nil, fmt.Errorf("lua script %v is a directory", scriptPath)
 	}
 
 	logger.Info().Msg("Loading script")

pkg/policy/address.go

@@ -45,7 +45,7 @@ func (a *Addressing) ExtractMailbox(address string) (string, error) {
 	}
 
 	if !ValidateDomainPart(domain) {
-		return "", fmt.Errorf("Domain part %q in %q failed validation", domain, address)
+		return "", fmt.Errorf("domain part %q in %q failed validation", domain, address)
 	}
 
 	return local + "@" + domain, nil
@@ -136,7 +136,7 @@ func ParseEmailAddress(address string) (local string, domain string, err error)
 		return "", "", err
 	}
 	if !ValidateDomainPart(domain) {
-		return "", "", fmt.Errorf("Domain part validation failed")
+		return "", "", fmt.Errorf("domain part validation failed")
 	}
 	return local, domain, nil
 }
@@ -229,7 +229,7 @@ func extractDomainMailbox(address string) (string, error) {
 	}
 
 	if !ValidateDomainPart(domain) {
-		return "", fmt.Errorf("Domain part %q in %q failed validation", domain, address)
+		return "", fmt.Errorf("domain part %q in %q failed validation", domain, address)
 	}
 
 	return domain, nil
@@ -254,7 +254,7 @@ func parseEmailAddress(address string) (local string, domain string, err error)
 		}
 		address = address[end+1:]
 		if address == "" {
-			return "", "", fmt.Errorf("Address empty after removing route specification")
+			return "", "", fmt.Errorf("address empty after removing route specification")
 		}
 	}
 
@@ -296,7 +296,7 @@ LOOP:
 			// A single period is OK.
 			if prev == '.' {
 				// Sequence of periods is not permitted.
-				return "", "", fmt.Errorf("Sequence of periods is not permitted")
+				return "", "", fmt.Errorf("sequence of periods is not permitted")
 			}
 			err = buf.WriteByte(c)
 			if err != nil {
@@ -318,7 +318,7 @@ LOOP:
 				if i == 0 {
 					inStringQuote = true
 				} else {
-					return "", "", fmt.Errorf("Quoted string can only begin at start of address")
+					return "", "", fmt.Errorf("quoted string can only begin at start of address")
 				}
 			}
 		case c == '@':
@@ -331,16 +331,16 @@ LOOP:
 			} else {
 				// End of local-part.
 				if i > 128 {
-					return "", "", fmt.Errorf("Local part must not exceed 128 characters")
+					return "", "", fmt.Errorf("local part must not exceed 128 characters")
 				}
 				if prev == '.' {
-					return "", "", fmt.Errorf("Local part cannot end with a period")
+					return "", "", fmt.Errorf("local part cannot end with a period")
 				}
 				domain = address[i+1:]
 				break LOOP
 			}
 		case c > 127:
-			return "", "", fmt.Errorf("Characters outside of US-ASCII range not permitted")
+			return "", "", fmt.Errorf("characters outside of US-ASCII range not permitted")
 		default:
 			if inCharQuote || inStringQuote {
 				err = buf.WriteByte(c)
@@ -349,16 +349,16 @@ LOOP:
 				}
 				inCharQuote = false
 			} else {
-				return "", "", fmt.Errorf("Character %q must be quoted", c)
+				return "", "", fmt.Errorf("character %q must be quoted", c)
 			}
 		}
 		prev = c
 	}
 	if inCharQuote {
-		return "", "", fmt.Errorf("Cannot end address with unterminated quoted-pair")
+		return "", "", fmt.Errorf("cannot end address with unterminated quoted-pair")
 	}
 	if inStringQuote {
-		return "", "", fmt.Errorf("Cannot end address with unterminated string quote")
+		return "", "", fmt.Errorf("cannot end address with unterminated string quote")
 	}
 	return buf.String(), domain, nil
 }
@@ -369,7 +369,7 @@ LOOP:
 // quoted according to RFC3696.
 func parseMailboxName(localPart string) (result string, err error) {
 	if localPart == "" {
-		return "", fmt.Errorf("Mailbox name cannot be empty")
+		return "", fmt.Errorf("mailbox name cannot be empty")
 	}
 	result = strings.ToLower(localPart)
 	invalid := make([]byte, 0, 10)
@@ -384,7 +384,7 @@ func parseMailboxName(localPart string) (result string, err error) {
 		}
 	}
 	if len(invalid) > 0 {
-		return "", fmt.Errorf("Mailbox name contained invalid character(s): %q", invalid)
+		return "", fmt.Errorf("mailbox name contained invalid character(s): %q", invalid)
 	}
 	if idx := strings.Index(result, "+"); idx > -1 {
 		result = result[0:idx]

pkg/rest/apiv1_controller.go

@@ -26,7 +26,7 @@ func MailboxListV1(w http.ResponseWriter, req *http.Request, ctx *web.Context) (
 	messages, err := ctx.Manager.GetMetadata(name)
 	if err != nil {
 		// This doesn't indicate empty, likely an IO error
-		return fmt.Errorf("Failed to get messages for %v: %v", name, err)
+		return fmt.Errorf("failed to get messages for %v: %v", name, err)
 	}
 	jmessages := make([]*model.JSONMessageHeaderV1, len(messages))
 	for i, msg := range messages {
@@ -108,7 +108,7 @@ func MailboxMarkSeenV1(w http.ResponseWriter, req *http.Request, ctx *web.Contex
 	dec := json.NewDecoder(req.Body)
 	dm := model.JSONMessageHeaderV1{}
 	if err := dec.Decode(&dm); err != nil {
-		return fmt.Errorf("Failed to decode JSON: %v", err)
+		return fmt.Errorf("failed to decode JSON: %v", err)
 	}
 	if dm.Seen {
 		err = ctx.Manager.MarkSeen(name, id)

pkg/rest/client/apiv1_client.go

@@ -87,7 +87,7 @@ func (c *Client) GetMessageSource(name, id string) (*bytes.Buffer, error) {
 	}()
 	if resp.StatusCode != http.StatusOK {
 		return nil,
-			fmt.Errorf("Unexpected HTTP response status %v: %s", resp.StatusCode, resp.Status)
+			fmt.Errorf("unexpected HTTP response status %v: %s", resp.StatusCode, resp.Status)
 	}
 	buf := new(bytes.Buffer)
 	_, err = buf.ReadFrom(resp.Body)
@@ -103,7 +103,7 @@ func (c *Client) DeleteMessage(name, id string) error {
 	}
 	_ = resp.Body.Close()
 	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("Unexpected HTTP response status %v: %s", resp.StatusCode, resp.Status)
+		return fmt.Errorf("unexpected HTTP response status %v: %s", resp.StatusCode, resp.Status)
 	}
 	return nil
 }
@@ -117,7 +117,7 @@ func (c *Client) PurgeMailbox(name string) error {
 	}
 	_ = resp.Body.Close()
 	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("Unexpected HTTP response status %v: %s", resp.StatusCode, resp.Status)
+		return fmt.Errorf("unexpected HTTP response status %v: %s", resp.StatusCode, resp.Status)
 	}
 	return nil
 }

pkg/server/pop3/listener.go

@@ -34,7 +34,7 @@ func NewServer(pop3Config config.POP3, store storage.Store) (*Server, error) {
 		tlsConfig.Certificates[0], err = tls.LoadX509KeyPair(pop3Config.TLSCert, pop3Config.TLSPrivKey)
 		if err != nil {
 			slog.Error().Msgf("Failed loading X509 KeyPair: %v", err)
-			return nil, fmt.Errorf("Failed to configure TLS; %v", err)
+			return nil, fmt.Errorf("failed to configure TLS; %v", err)
 			// Do not silently turn off Security.
 		}
 		slog.Debug().Msg("TLS config available")

pkg/server/smtp/handler.go

@@ -307,7 +307,7 @@ func parseHelloArgument(arg string) (string, error) {
 		domain = arg[:idx]
 	}
 	if domain == "" {
-		return "", fmt.Errorf("Invalid domain")
+		return "", fmt.Errorf("invalid domain")
 	}
 	return domain, nil
 }

pkg/storage/file/mbox.go

@@ -130,7 +130,7 @@ func (mb *mbox) readIndex() error {
 	dec := gob.NewDecoder(br)
 	name := ""
 	if err = dec.Decode(&name); err != nil {
-		return fmt.Errorf("Corrupt mailbox %q: %v", mb.indexPath, err)
+		return fmt.Errorf("corrupt mailbox %q: %v", mb.indexPath, err)
 	}
 	mb.name = name
 	for {
@@ -140,7 +140,7 @@ func (mb *mbox) readIndex() error {
 			if err == io.EOF {
 				break
 			}
-			return fmt.Errorf("Corrupt mailbox %q: %v", mb.indexPath, err)
+			return fmt.Errorf("corrupt mailbox %q: %v", mb.indexPath, err)
 		}
 		msg.mailbox = mb
 		mb.messages = append(mb.messages, msg)

pkg/webui/root_controller.go

@@ -13,7 +13,7 @@ import (
 func RootGreeting(w http.ResponseWriter, req *http.Request, ctx *web.Context) (err error) {
 	greeting, err := os.ReadFile(ctx.RootConfig.Web.GreetingFile)
 	if err != nil {
-		return fmt.Errorf("Failed to load greeting: %v", err)
+		return fmt.Errorf("failed to load greeting: %v", err)
 	}
 
 	w.Header().Set("Content-Type", "text/html")