fix: write the level of the record not the handler

.github/workflows/go.yml

@@ -13,11 +13,11 @@ jobs:
           - ubuntu-latest
           - macos-latest
           - windows-latest
-        go: ['1.21']
+        go: ['1.21', '1.22']
     name: humane test (using go ${{ matrix.go }} on ${{ matrix.os }})
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-go@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}
       - run: make test

docs/README.md

@@ -51,7 +51,7 @@ logger.Error("Ooops", slog.Any("error", err))
 // You can also set options.  Again, see the next section for more details.
 opts := &humane.Options{
     Level: slog.LevelError,
-    TimeFormat: time.RFC3339
+    TimeFormat: time.RFC3339,
 }
 logger := slog.New(humane.NewHandler(os.Stderr, opts))
 logger.Info("This message will not be written")

example_test.go

@@ -0,0 +1,31 @@
+package humane_test
+
+import (
+	"fmt"
+	"log/slog"
+	"os"
+
+	"github.com/telemachus/humane"
+)
+
+func ExampleInfo() {
+	opts := &humane.Options{ReplaceAttr: removeTime, Level: slog.LevelDebug}
+	logger := slog.New(humane.NewHandler(os.Stdout, opts))
+	logger.Debug("Foo")
+	logger.Info("Bar")
+	logger.Warn("Fizz")
+	logger.Error("Buzz")
+	logger.Error("Error", slog.Any("error", fmt.Errorf("xxxx")))
+	logger.Warn("Warn", "foo", "bar")
+	logger.Info("Info", "fizz", "buzz")
+	logger.Debug("Debug", "status", "hello, world")
+	// Output:
+	// DEBUG | Foo |
+	//  INFO | Bar |
+	//  WARN | Fizz |
+	// ERROR | Buzz |
+	// ERROR | Error | error=xxxx
+	//  WARN | Warn | foo=bar
+	//  INFO | Info | fizz=buzz
+	// DEBUG | Debug | status="hello, world"
+}

go.mod

@@ -1,3 +1,3 @@
 module github.com/telemachus/humane
 
-go 1.21
+go 1.22

humane.go

@@ -104,11 +104,11 @@ func (h *handler) Enabled(_ context.Context, l slog.Level) bool {
 func (h *handler) Handle(_ context.Context, r slog.Record) error {
 	buf := buffer.New()
 	defer buf.Free()
-	h.appendLevel(buf)
+	h.appendLevel(buf, r.Level)
 	buf.WriteByte(' ')
 	buf.WriteString(r.Message)
 	buf.WriteString(" |")
-	if len(h.attrs) > 0 {
+	if h.attrs != "" {
 		buf.WriteString(h.attrs)
 	}
 	r.Attrs(func(a slog.Attr) bool {
@@ -174,13 +174,13 @@ func (h *handler) clone() *handler {
 	}
 }
 
-func (h *handler) appendLevel(buf *buffer.Buffer) {
-	if lVal, ok := levelValues[h.level.Level()]; ok {
+func (h *handler) appendLevel(buf *buffer.Buffer, level slog.Level) {
+	if lVal, ok := levelValues[level.Level()]; ok {
 		buf.WriteString(lVal)
 		return
 	}
 	buf.WriteByte(' ')
-	buf.WriteString(h.level.Level().String())
+	buf.WriteString(level.Level().String())
 	buf.WriteString(" |")
 }
 

slogtest_test.go

@@ -51,7 +51,7 @@ func parseHumane(bs []byte) (map[string]any, error) {
 	// that contains a space. For this test, however, this will work---as
 	// long as I make sure to set a time format without whitespace.
 	s = pieces[2]
-	for len(s) > 0 {
+	for s != "" {
 		kv, rest, _ := strings.Cut(s, " ")
 		k, value, found := strings.Cut(kv, "=")
 		if !found {