feat: add column logger

Signed-off-by: gfanton <8671905+gfanton@users.noreply.github.com>

contribs/gnodev/pkg/logger/log_column.go

@@ -0,0 +1,144 @@
+package logger
+
+import (
+	"bytes"
+	"fmt"
+	"hash/fnv"
+	"io"
+	"log/slog"
+	"strconv"
+
+	"github.com/charmbracelet/lipgloss"
+	"github.com/charmbracelet/log"
+	"github.com/muesli/termenv"
+)
+
+func NewColumnLogger(w io.Writer, level slog.Level, color bool) *slog.Logger {
+	charmLogger := log.NewWithOptions(w, log.Options{
+		ReportTimestamp: false,
+		ReportCaller:    false,
+		Prefix:          "",
+	})
+
+	// Default column output
+	charmLogger.SetOutput(&columnWriter{
+		style:  lipgloss.NewStyle(),
+		prefix: "",
+		writer: w,
+	})
+
+	colorProfile := termenv.TrueColor
+	if !color {
+		colorProfile = termenv.Ascii
+	}
+
+	columnHandler := &columnLogger{
+		Logger:       charmLogger,
+		writer:       w,
+		prefix:       charmLogger.GetPrefix(),
+		colorProfile: colorProfile,
+	}
+
+	charmLogger.SetStyles(DefaultStyles())
+	charmLogger.SetColorProfile(colorProfile)
+	charmLogger.SetReportCaller(false)
+	switch level {
+	case slog.LevelDebug:
+		charmLogger.SetLevel(log.DebugLevel)
+	case slog.LevelError:
+		charmLogger.SetLevel(log.ErrorLevel)
+	case slog.LevelInfo:
+		charmLogger.SetLevel(log.InfoLevel)
+	case slog.LevelWarn:
+		charmLogger.SetLevel(log.WarnLevel)
+	default:
+		panic("invalid slog level")
+	}
+
+	return slog.New(columnHandler)
+}
+
+type columnLogger struct {
+	*log.Logger
+
+	prefix       string
+	writer       io.Writer
+	colorProfile termenv.Profile
+}
+
+func (cl *columnLogger) WithGroup(name string) slog.Handler {
+	if cl.prefix != "" {
+		name = fmt.Sprintf("%.1s.%s", cl.prefix, name)
+	}
+
+	nlog := cl.Logger.With() // clone logger
+	baseStyle := lipgloss.NewStyle().Foreground(lipgloss.Color(strconv.Itoa(stringToColor(name))))
+	nlog.SetOutput(NewColumeWriter(baseStyle, name, cl.writer))
+	nlog.SetColorProfile(cl.colorProfile)
+	return &columnLogger{
+		Logger: nlog,
+		prefix: name,
+		writer: cl.writer,
+	}
+}
+
+var lf = []byte{'\n'}
+
+type columnWriter struct {
+	inline bool
+	style  lipgloss.Style
+	prefix string
+	writer io.Writer
+}
+
+func NewColumeWriter(baseStyle lipgloss.Style, prefix string, writer io.Writer) *columnWriter {
+	style := baseStyle.
+		Border(lipgloss.ThickBorder(), false, true, false, false).
+		BorderForeground(baseStyle.GetForeground()).
+		Bold(true).
+		Width(12)
+	return &columnWriter{style: style, prefix: prefix, writer: writer}
+}
+
+func (cl *columnWriter) Write(buf []byte) (n int, err error) {
+	for line := 0; len(buf) > 0; line++ {
+		i := bytes.IndexByte(buf, '\n')
+		todo := len(buf)
+		if i >= 0 {
+			todo = i
+		}
+
+		if !cl.inline {
+			var prefix string
+			if line == 0 {
+				prefix = cl.prefix
+			}
+
+			fmt.Fprint(cl.writer, cl.style.Render(prefix)+" ")
+		}
+
+		var nn int
+		nn, err = cl.writer.Write(buf[:todo])
+		n += nn
+		if err != nil {
+			return n, err
+		}
+		buf = buf[todo:]
+
+		if cl.inline = i < 0; !cl.inline {
+			if _, err = cl.writer.Write([]byte(lf)); err != nil {
+				return n, err
+			}
+			n++
+			buf = buf[1:]
+		}
+	}
+
+	return n, nil
+}
+
+func stringToColor(s string) int {
+	h := fnv.New32a()
+	h.Write([]byte(s))
+	return int((h.Sum32()+10)%255) + 1
+}

contribs/gnodev/pkg/logger/log_styles.go

@@ -0,0 +1,54 @@
+package logger
+
+import (
+	"strings"
+
+	"github.com/charmbracelet/lipgloss"
+	"github.com/charmbracelet/log"
+)
+
+// DefaultStyles returns the default styles.
+func DefaultStyles() *log.Styles {
+	style := log.DefaultStyles()
+	style.Levels = map[log.Level]lipgloss.Style{
+		log.DebugLevel: lipgloss.NewStyle().
+			SetString(strings.ToUpper(log.DebugLevel.String())).
+			Bold(true).
+			MaxWidth(1).
+			Foreground(lipgloss.Color("63")),
+		log.InfoLevel: lipgloss.NewStyle().
+			SetString(strings.ToUpper(log.InfoLevel.String())).
+			MaxWidth(1).
+			Foreground(lipgloss.Color("12")),
+
+		log.WarnLevel: lipgloss.NewStyle().
+			SetString(strings.ToUpper(log.WarnLevel.String())).
+			Bold(true).
+			MaxWidth(1).
+			Foreground(lipgloss.Color("192")),
+		log.ErrorLevel: lipgloss.NewStyle().
+			SetString(strings.ToUpper(log.ErrorLevel.String())).
+			Bold(true).
+			MaxWidth(1).
+			Foreground(lipgloss.Color("204")),
+		log.FatalLevel: lipgloss.NewStyle().
+			SetString(strings.ToUpper(log.FatalLevel.String())).
+			Bold(true).
+			MaxWidth(1).
+			Foreground(lipgloss.Color("134")),
+	}
+	style.Keys = map[string]lipgloss.Style{
+		"err": lipgloss.NewStyle().
+			Foreground(lipgloss.Color("9")),
+		"error": lipgloss.NewStyle().
+			Foreground(lipgloss.Color("9")),
+	}
+	style.Values = map[string]lipgloss.Style{
+		"err": lipgloss.NewStyle().
+			Foreground(lipgloss.Color("9")),
+		"error": lipgloss.NewStyle().
+			Foreground(lipgloss.Color("9")),
+	}
+
+	return style
+}