Refactor logger to support multiple output writers and disable stdout

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR

colors.go

@@ -0,0 +1,134 @@
+package cylogger
+
+import (
+	"fmt"
+	"math/rand/v2"
+)
+
+const (
+	// Reset
+	Reset = "\033[0m" // Text Reset
+
+	// Regular Colors
+	Black   = "\033[0;30m"     // Black
+	Red     = "\033[0;31m"     // Red
+	Green   = "\033[0;32m"     // Green
+	Yellow  = "\033[0;33m"     // Yellow
+	Blue    = "\033[0;34m"     // Blue
+	Purple  = "\033[0;35m"     // Purple
+	Cyan    = "\033[0;36m"     // Cyan
+	White   = "\033[0;37m"     // White
+	Orange  = "\033[38;5;208m" // Orange
+	Pink    = "\033[38;5;205m" // Pink
+	Brown   = "\033[38;5;130m" // Brown
+	Gray    = "\033[38;5;240m" // Gray
+	Magenta = "\033[38;5;201m" // Magenta
+
+	// Bold
+	BBlack   = "\033[1;30m"       // Black
+	BRed     = "\033[1;31m"       // Red
+	BGreen   = "\033[1;32m"       // Green
+	BYellow  = "\033[1;33m"       // Yellow
+	BBlue    = "\033[1;34m"       // Blue
+	BPurple  = "\033[1;35m"       // Purple
+	BCyan    = "\033[1;36m"       // Cyan
+	BWhite   = "\033[1;37m"       // White
+	BOrange  = "\033[1;38;5;208m" // Bold Orange
+	BPink    = "\033[1;38;5;205m" // Bold Pink
+	BBrown   = "\033[1;38;5;130m" // Bold Brown
+	BGray    = "\033[1;38;5;240m" // Bold Gray
+	BMagenta = "\033[1;38;5;201m" // Bold Magenta
+
+	// Underline
+	UBlack   = "\033[4;30m"       // Black
+	URed     = "\033[4;31m"       // Red
+	UGreen   = "\033[4;32m"       // Green
+	UYellow  = "\033[4;33m"       // Yellow
+	UBlue    = "\033[4;34m"       // Blue
+	UPurple  = "\033[4;35m"       // Purple
+	UCyan    = "\033[4;36m"       // Cyan
+	UWhite   = "\033[4;37m"       // White
+	UOrange  = "\033[4;38;5;208m" // Underline Orange
+	UPink    = "\033[4;38;5;205m" // Underline Pink
+	UBrown   = "\033[4;38;5;130m" // Underline Brown
+	UGray    = "\033[4;38;5;240m" // Underline Gray
+	UMagenta = "\033[4;38;5;201m" // Underline Magenta
+
+	// Background
+	On_Black   = "\033[40m"       // Black
+	On_Red     = "\033[41m"       // Red
+	On_Green   = "\033[42m"       // Green
+	On_Yellow  = "\033[43m"       // Yellow
+	On_Blue    = "\033[44m"       // Blue
+	On_Purple  = "\033[45m"       // Purple
+	On_Cyan    = "\033[46m"       // Cyan
+	On_White   = "\033[47m"       // White
+	On_Orange  = "\033[48;5;208m" // Orange Background
+	On_Pink    = "\033[48;5;205m" // Pink Background
+	On_Brown   = "\033[48;5;130m" // Brown Background
+	On_Gray    = "\033[48;5;240m" // Gray Background
+	On_Magenta = "\033[48;5;201m" // Magenta Background
+
+	// High Intensty
+	IBlack   = "\033[0;90m"       // Black
+	IRed     = "\033[0;91m"       // Red
+	IGreen   = "\033[0;92m"       // Green
+	IYellow  = "\033[0;93m"       // Yellow
+	IBlue    = "\033[0;94m"       // Blue
+	IPurple  = "\033[0;95m"       // Purple
+	ICyan    = "\033[0;96m"       // Cyan
+	IWhite   = "\033[0;97m"       // White
+	IOrange  = "\033[0;38;5;208m" // Intense Orange
+	IPink    = "\033[0;38;5;205m" // Intense Pink
+	IBrown   = "\033[0;38;5;130m" // Intense Brown
+	IGray    = "\033[0;38;5;240m" // Intense Gray
+	IMagenta = "\033[0;38;5;201m" // Intense Magenta
+
+	// Bold High Intensty
+	BIBlack   = "\033[1;90m"       // Black
+	BIRed     = "\033[1;91m"       // Red
+	BIGreen   = "\033[1;92m"       // Green
+	BIYellow  = "\033[1;93m"       // Yellow
+	BIBlue    = "\033[1;94m"       // Blue
+	BIPurple  = "\033[1;95m"       // Purple
+	BICyan    = "\033[1;96m"       // Cyan
+	BIWhite   = "\033[1;97m"       // White
+	BIOrange  = "\033[1;38;5;208m" // Bold Intense Orange
+	BIPink    = "\033[1;38;5;205m" // Bold Intense Pink
+	BIBrown   = "\033[1;38;5;130m" // Bold Intense Brown
+	BIGray    = "\033[1;38;5;240m" // Bold Intense Gray
+	BIMagenta = "\033[1;38;5;201m" // Bold Intense Magenta
+
+	// High Intensty backgrounds
+	On_IBlack   = "\033[0;100m"      // Black
+	On_IRed     = "\033[0;101m"      // Red
+	On_IGreen   = "\033[0;102m"      // Green
+	On_IYellow  = "\033[0;103m"      // Yellow
+	On_IBlue    = "\033[0;104m"      // Blue
+	On_IPurple  = "\033[10;95m"      // Purple
+	On_ICyan    = "\033[0;106m"      // Cyan
+	On_IWhite   = "\033[0;107m"      // White
+	On_IOrange  = "\033[0;48;5;208m" // Intense Orange Background
+	On_IPink    = "\033[0;48;5;205m" // Intense Pink Background
+	On_IBrown   = "\033[0;48;5;130m" // Intense Brown Background
+	On_IGray    = "\033[0;48;5;240m" // Intense Gray Background
+	On_IMagenta = "\033[0;48;5;201m" // Intense Magenta Background
+)
+
+// The acceptable range is [16, 231] but here we remove some very dark colors
+// That make text unreadable on a dark terminal
+// See https://www.hackitu.de/termcolor256/
+var colors = []int{22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 57, 62, 63, 64, 65, 67, 68, 69, 70, 71, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 148, 149, 150, 151, 152, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 184, 185, 186, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 226, 227, 228, 229, 230}
+var colorsIndex int = -1
+var shuffled bool
+
+func GenerateRandomAnsiColor() string {
+	if !shuffled {
+		rand.Shuffle(len(colors), func(i int, j int) {
+			colors[i], colors[j] = colors[j], colors[i]
+		})
+		shuffled = true
+	}
+	colorsIndex++
+	return fmt.Sprintf("\033[1;4;38;5;%dm", colors[colorsIndex%len(colors)])
+}

go.mod

@@ -1,3 +1,13 @@
 module git.site.quack-lab.dev/dave/cylogger
 
-go 1.24.2
+go 1.23
+
+require github.com/hexops/valast v1.5.0
+
+require (
+	github.com/google/go-cmp v0.5.9 // indirect
+	golang.org/x/mod v0.7.0 // indirect
+	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/tools v0.4.0 // indirect
+	mvdan.cc/gofumpt v0.4.0 // indirect
+)

go.sum

@@ -0,0 +1,26 @@
+github.com/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE=
+github.com/frankban/quicktest v1.14.3/go.mod h1:mgiwOwqx65TmIk1wJ6Q7wvnVMocbUorkibMOrVTHZps=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/hexops/autogold v0.8.1 h1:wvyd/bAJ+Dy+DcE09BoLk6r4Fa5R5W+O+GUzmR985WM=
+github.com/hexops/autogold v0.8.1/go.mod h1:97HLDXyG23akzAoRYJh/2OBs3kd80eHyKPvZw0S5ZBY=
+github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
+github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
+github.com/hexops/valast v1.5.0 h1:FBTuvVi0wjTngtXJRZXMbkN/Dn6DgsUsBwch2DUJU8Y=
+github.com/hexops/valast v1.5.0/go.mod h1:Jcy1pNH7LNraVaAZDLyv21hHg2WBv9Nf9FL6fGxU7o4=
+github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+golang.org/x/mod v0.7.0 h1:LapD9S96VoQRhi/GrNTqeBJFrUjs5UHCAtTlgwA5oZA=
+golang.org/x/mod v0.7.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
+golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/tools v0.4.0 h1:7mTAgkunk3fr4GAloyyCasadO6h9zSsQZbwvcaIciV4=
+golang.org/x/tools v0.4.0/go.mod h1:UE5sM2OK9E/d67R0ANs2xJizIymRP5gJU295PvKXxjQ=
+mvdan.cc/gofumpt v0.4.0 h1:JVf4NN1mIpHogBj7ABpgOyZc65/UUOkKQFkoURsz4MM=
+mvdan.cc/gofumpt v0.4.0/go.mod h1:PljLOHDeZqgS8opHRKLzp2It2VBuSdteAgqUfzMTxlQ=

main.go

@@ -1,4 +1,4 @@
-package main
+package cylogger
 
 import (
 	"bytes"
@@ -13,6 +13,8 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/hexops/valast"
 )
 
 // TODO: Enable turning colors on and off maybe even per stream?
@@ -33,47 +35,70 @@ const (
 	LevelDebug
 	// LevelTrace is for very detailed tracing information
 	LevelTrace
+	// LevelDump is for dumping objects to console for regressive tests
+	LevelDump
 	// LevelLua is specifically for output from Lua scripts
 	LevelLua
 	LevelPrefix
 )
 
-var levelNames = map[LogLevel]string{
-	LevelError:   "ERROR",
-	LevelWarning: "WARNING",
-	LevelInfo:    "INFO",
-	LevelDebug:   "DEBUG",
-	LevelTrace:   "TRACE",
-	LevelLua:     "LUA",
-	LevelPrefix:  "PREFIX",
+// LevelStyle defines the visual style for a log level
+type LevelStyle struct {
+	Tag                    string // e.g., "ERROR", "INFO"
+	TagColor               string // ANSI code for tag text
+	TagBackgroundColor     string // ANSI code for tag background
+	MessageColor           string // ANSI code for message text
+	MessageBackgroundColor string // ANSI code for message background
 }
 
-var levelColors = map[LogLevel]string{
-	LevelError:   "\033[1;31m", // Bold Red
-	LevelWarning: "\033[1;33m", // Bold Yellow
-	LevelInfo:    "\033[1;32m", // Bold Green
-	LevelDebug:   "\033[1;36m", // Bold Cyan
-	LevelTrace:   "\033[1;35m", // Bold Magenta
-	LevelLua:     "\033[1;34m", // Bold Blue
-	LevelPrefix:  "\033[0;90m", // Regular Dark Grey
+// levelStyles maps LogLevel to its display style
+var levelStyles = map[LogLevel]LevelStyle{
+	LevelError: {
+		Tag:                    "ERROR",
+		TagColor:               BIRed,    // Bold Intense Red
+		TagBackgroundColor:     On_White, // White background
+		MessageColor:           White,    // Bold White text
+		MessageBackgroundColor: On_IRed,  // Intense Red background
+	},
+	LevelWarning: {
+		Tag:                    "WARNING",
+		TagColor:               BIOrange,   // Bold Intense Orange
+		TagBackgroundColor:     On_White,   // White background
+		MessageColor:           White,      // Bold White text
+		MessageBackgroundColor: On_IOrange, // Intense Orange background
+	},
+	LevelInfo: {
+		Tag:      "INFO",
+		TagColor: BGreen, // Bold Green
+	},
+	LevelDebug: {
+		Tag:      "DEBUG",
+		TagColor: BCyan, // Bold Cyan
+	},
+	LevelTrace: {
+		Tag:      "TRACE",
+		TagColor: BPurple, // Bold Purple
+	},
+	LevelDump: {
+		Tag:                "DUMP",
+		TagColor:           BIMagenta, // Bold Intense Magenta
+		TagBackgroundColor: On_White,  // White background
+		MessageColor:       IMagenta,  // White text
+	},
+	LevelLua: {
+		Tag:      "LUA",
+		TagColor: BBlue, // Bold Blue
+	},
+	LevelPrefix: {
+		Tag:      "PREFIX", // Used for coloring the user prefix
+		TagColor: BIGray,   // Bold Gray
+	},
 }
 
-// ANSI Background Colors
-var levelBackgroundColors = map[LogLevel]string{
-	LevelError:   "\033[41m", // Red Background
-	LevelWarning: "\033[43m", // Yellow Background
-}
-
-// ANSI Foreground Colors (adjusting for readability on backgrounds)
-const FgWhiteBold = "\033[1;37m"
-
-// ResetColor is the ANSI code to reset text color
-const ResetColor = "\033[0m"
-
 // Logger is our custom logger with level support
 type Logger struct {
 	mu            sync.Mutex
-	out           io.Writer
+	out           []io.Writer
 	currentLevel  LogLevel
 	prefix        string
 	userPrefix    string
@@ -106,6 +131,8 @@ func ParseLevel(levelStr string) LogLevel {
 		return LevelDebug
 	case "TRACE":
 		return LevelTrace
+	case "DUMP":
+		return LevelDump
 	case "LUA":
 		return LevelLua
 	default:
@@ -115,8 +142,8 @@ func ParseLevel(levelStr string) LogLevel {
 
 // String returns the string representation of the log level
 func (l LogLevel) String() string {
-	if name, ok := levelNames[l]; ok {
-		return name
+	if name, ok := levelStyles[l]; ok {
+		return name.Tag
 	}
 	return fmt.Sprintf("Level(%d)", l)
 }
@@ -124,7 +151,7 @@ func (l LogLevel) String() string {
 // New creates a new Logger instance
 func New(out io.Writer, prefix string, flag int) *Logger {
 	return &Logger{
-		out:           out,
+		out:           []io.Writer{out},
 		currentLevel:  defaultLogLevel,
 		prefix:        prefix,
 		userPrefix:    "",
@@ -190,7 +217,7 @@ func (l *Logger) ShowGoroutine() bool {
 // WithField adds a field to the logger's context
 func (l *Logger) WithField(key string, value interface{}) *Logger {
 	newLogger := &Logger{
-		out:           l.out,
+		out:           append([]io.Writer(nil), l.out...),
 		currentLevel:  l.currentLevel,
 		prefix:        l.prefix,
 		userPrefix:    l.userPrefix,
@@ -214,7 +241,7 @@ func (l *Logger) WithField(key string, value interface{}) *Logger {
 // WithFields adds multiple fields to the logger's context
 func (l *Logger) WithFields(fields map[string]interface{}) *Logger {
 	newLogger := &Logger{
-		out:           l.out,
+		out:           append([]io.Writer(nil), l.out...),
 		currentLevel:  l.currentLevel,
 		prefix:        l.prefix,
 		userPrefix:    l.userPrefix,
@@ -245,7 +272,7 @@ func (l *Logger) WithPrefix(prefix string) *Logger {
 		l = Default
 	}
 	newLogger := &Logger{
-		out:           l.out,
+		out:           append([]io.Writer(nil), l.out...),
 		currentLevel:  l.currentLevel,
 		prefix:        l.prefix,
 		userPrefix:    strings.TrimSpace(l.userPrefix + " " + prefix),
@@ -275,7 +302,7 @@ func (l *Logger) ToFile(filename string) *Logger {
 		l = Default
 	}
 	newLogger := &Logger{
-		out:           io.MultiWriter(l.out, file),
+		out:           append([]io.Writer(nil), l.out...),
 		currentLevel:  l.currentLevel,
 		prefix:        l.prefix,
 		userPrefix:    l.userPrefix,
@@ -285,6 +312,12 @@ func (l *Logger) ToFile(filename string) *Logger {
 		defaultFields: make(map[string]interface{}),
 		showGoroutine: l.showGoroutine,
 	}
+	// Copy existing fields
+	for k, v := range l.defaultFields {
+		newLogger.defaultFields[k] = v
+	}
+	// Append the new file writer
+	newLogger.out = append(newLogger.out, file)
 	return newLogger
 }
 
@@ -318,56 +351,52 @@ func (l *Logger) formatMessage(level LogLevel, format string, args ...interface{
 		fields = " " + strings.Join(pairs, " ")
 	}
 
-	var levelColor, bgColor, msgFgColor, resetColor string
-	useBgColor := false // Flag to indicate if background color should be used
+	var tagFgColor, tagBgColor, messageBgColor string
+	useSpecialFormatting := false // Flag for levels with custom message background/foreground
 	if l.useColors {
-		resetColor = ResetColor
-		levelColor = levelColors[level] // Color for the level tag text ONLY
-
-		if bg, ok := levelBackgroundColors[level]; ok { // Check if this level has a background color defined (ERROR/WARNING)
-			bgColor = bg
-			msgFgColor = FgWhiteBold // Use bold white for the message part on colored background
-			useBgColor = true
+		// Check if a message background color is defined for this level style
+		if levelStyles[level].MessageBackgroundColor != "" {
+			useSpecialFormatting = true
+			// Retrieve all style components from the map
+			tagFgColor = levelStyles[level].TagColor // Assign directly
+			tagBgColor = levelStyles[level].TagBackgroundColor
+			// messageFgColor = levelStyles[level].MessageColor
+			messageBgColor = levelStyles[level].MessageBackgroundColor
 		} else {
-			// For other levels, message part uses default terminal color.
-			// msgFgColor remains empty, bgColor remains empty.
-			// levelColor is still needed for the tag below.
+			// For other levels (INFO, DEBUG, etc.), only TagColor is guaranteed
+			tagFgColor = levelStyles[level].TagColor // Use the defined tag color
+			// tagBgColor, messageFgColor, messageBgColor remain empty (use terminal defaults)
 		}
 	}
 
 	var caller string
 	if l.flag&log.Lshortfile != 0 || l.flag&log.Llongfile != 0 {
-		// Find the actual caller by scanning up the stack
-		// until we find a function outside the logger package
 		var file string
 		var line int
 		var ok bool
-
 		// Start at a reasonable depth and scan up to 10 frames
 		for depth := 4; depth < 15; depth++ {
 			_, file, line, ok = runtime.Caller(depth)
 			if !ok {
 				break
 			}
-
-			// If the caller is not in the logger package, we found our caller
-			if !strings.Contains(file, "logger/logger.go") {
+			// Check if the caller is within this logger package itself
+			if !strings.Contains(file, "main.go") && !strings.Contains(file, "colors.go") {
 				break
 			}
 		}
-
 		if !ok {
 			file = "???"
 			line = 0
 		}
-
 		if l.flag&log.Lshortfile != 0 {
 			file = filepath.Base(file)
 		}
+		// Caller string - no background color applied here
 		caller = fmt.Sprintf("%-25s ", file+":"+strconv.Itoa(line))
 	}
 
-	// Format the timestamp with fixed width
+	// Format the timestamp with fixed width - no background color applied here
 	var timeStr string
 	if l.flag&(log.Ldate|log.Ltime|log.Lmicroseconds) != 0 {
 		t := time.Now()
@@ -383,41 +412,75 @@ func (l *Logger) formatMessage(level LogLevel, format string, args ...interface{
 		timeStr = fmt.Sprintf("%-15s ", timeStr)
 	}
 
-	// Add goroutine ID if enabled, with fixed width
+	// Add goroutine ID if enabled, with fixed width - no background color applied here
 	var goroutineStr string
 	if l.showGoroutine {
 		goroutineID := GetGoroutineID()
 		goroutineStr = fmt.Sprintf("[g:%-4s] ", goroutineID)
 	}
 
-	// Create a colored level indicator - color only the level name text, reset locally
-	levelStr := fmt.Sprintf("%s%s%s", levelColor, levelNames[level], resetColor)
-	levelColumn := fmt.Sprintf("%-20s", levelStr) // Pad the tag
+	// --- Level Tag Formatting and Padding ---
+	levelStr := levelStyles[level].Tag
+	visibleTagContent := fmt.Sprintf("[%s]", levelStr)
+	visibleTagLen := len(visibleTagContent)
+	paddingWidth := 10 // Target width for the level column (tag + padding)
+	numSpaces := paddingWidth - visibleTagLen
+	if numSpaces < 0 {
+		numSpaces = 1 // Ensure at least one space
+	}
+	padding := strings.Repeat(" ", numSpaces)
 
+	var levelTagFormatted string
+	if useSpecialFormatting {
+		// ERROR/WARNING: Tag has specific background and foreground
+		levelTagFormatted = fmt.Sprintf("%s%s%s%s", tagBgColor, tagFgColor, visibleTagContent, Reset)
+	} else {
+		// Other levels: Tag has standard foreground color only
+		levelTagFormatted = fmt.Sprintf("%s%s%s", tagFgColor, visibleTagContent, Reset)
+	}
+	levelColumn := levelTagFormatted + padding // Combine formatted tag and padding
+
+	// --- User Prefix Formatting (part of message content for coloring purposes) ---
 	userPrefixStr := ""
 	if l.userPrefix != "" {
-		// Use default foreground color for prefix (dark grey), reset locally
-		prefixColor := levelColors[LevelPrefix]
-		userPrefixStr = fmt.Sprintf("%s[%s]%s ", prefixColor, l.userPrefix, resetColor)
+		// Format the string part here, colors applied later if needed
+		userPrefixStr = fmt.Sprintf("[%s] ", l.userPrefix)
 	}
 
-	// Build the prefix part (timestamp, caller, goroutine, level tag, user prefix)
-	// These parts will use default terminal colors or their specifically set colors (like level tag)
-	prefixPart := fmt.Sprintf("%s%s%s%s%s%s",
-		l.prefix, timeStr, caller, goroutineStr, levelColumn, userPrefixStr)
+	// --- Message Content ---
+	messageContent := fmt.Sprintf("%s%s", msg, fields)
 
-	// Build the message part
-	messagePart := fmt.Sprintf("%s%s", msg, fields)
+	// --- Assemble Final String ---
+	var finalMsg strings.Builder
 
-	// Combine prefix and message, applying background/foreground ONLY to the message part
-	if useBgColor {
-		// Apply background and specific foreground ONLY to the message part
-		return fmt.Sprintf("%s%s%s%s%s", prefixPart, bgColor, msgFgColor, messagePart, resetColor)
+	// Part 1: Timestamp, Caller, Goroutine ID (always default colors)
+	finalMsg.WriteString(l.prefix)
+	finalMsg.WriteString(timeStr)
+	finalMsg.WriteString(caller)
+	finalMsg.WriteString(goroutineStr)
+
+	// Part 2: Level Column (already formatted with tag colors and padding)
+	finalMsg.WriteString(levelColumn)
+
+	// Part 3: User Prefix + Message Content (apply special formatting if needed)
+	if useSpecialFormatting {
+		// ERROR/WARNING: Apply message background and foreground to User Prefix + Message
+		finalMsg.WriteString(messageBgColor)
+		// finalMsg.WriteString(messageFgColor) // This doesn't work...? For some reason?
+		finalMsg.WriteString(userPrefixStr) // Write user prefix inside the colored block
+		finalMsg.WriteString(messageContent)
+		finalMsg.WriteString(Reset)
 	} else {
-		// For non-ERROR/WARNING, just combine prefix (with its colored tag) and the uncolored message part.
-		// No additional color codes needed here for the message itself.
-		return fmt.Sprintf("%s%s", prefixPart, messagePart)
+		// Other levels: User Prefix and Message content use default colors
+		// Apply specific color to user prefix if it exists
+		if l.userPrefix != "" {
+			prefixColor := levelStyles[LevelPrefix].TagColor
+			finalMsg.WriteString(fmt.Sprintf("%s%s%s", prefixColor, userPrefixStr, Reset))
+		} // No else needed, if userPrefix is empty, userPrefixStr is "" anyway
+		finalMsg.WriteString(messageContent) // Append message with default colors
 	}
+
+	return finalMsg.String()
 }
 
 // log logs a message at the specified level
@@ -432,7 +495,9 @@ func (l *Logger) log(level LogLevel, format string, args ...interface{}) {
 
 	// Get formatted message with potential background color
 	msg := l.formatMessage(level, format, args...)
-	fmt.Fprintln(l.out, msg)
+	for _, w := range l.out {
+		fmt.Fprintln(w, msg)
+	}
 }
 
 // Error logs an error message
@@ -460,6 +525,27 @@ func (l *Logger) Trace(format string, args ...interface{}) {
 	l.log(LevelTrace, format, args...)
 }
 
+// Dump logs objects using valast for regressive tests
+func (l *Logger) Dump(message string, objects ...interface{}) {
+	if len(objects) == 0 {
+		l.log(LevelDump, message)
+		return
+	}
+
+	var dumpContent strings.Builder
+	dumpContent.WriteString(message)
+	dumpContent.WriteString(":\n")
+
+	for i, obj := range objects {
+		if i > 0 {
+			dumpContent.WriteString("\n")
+		}
+		dumpContent.WriteString(valast.String(obj))
+	}
+
+	l.log(LevelDump, dumpContent.String())
+}
+
 // Lua logs a Lua message
 func (l *Logger) Lua(format string, args ...interface{}) {
 	l.log(LevelLua, format, args...)
@@ -507,6 +593,14 @@ func Trace(format string, args ...interface{}) {
 	Default.Trace(format, args...)
 }
 
+// Dump logs objects using valast for regressive tests using the default logger
+func Dump(message string, objects ...interface{}) {
+	if Default == nil {
+		Init(defaultLogLevel)
+	}
+	Default.Dump(message, objects...)
+}
+
 // Lua logs a Lua message using the default logger
 func Lua(format string, args ...interface{}) {
 	if Default == nil {
@@ -573,3 +667,106 @@ func ShowGoroutine() bool {
 	}
 	return Default.ShowGoroutine()
 }
+
+func (l *Logger) NoStdout() *Logger {
+	if Default == nil {
+		Init(defaultLogLevel)
+	}
+	if l == nil {
+		l = Default
+	}
+	newLogger := &Logger{
+		out:           nil,
+		currentLevel:  l.currentLevel,
+		prefix:        l.prefix,
+		userPrefix:    l.userPrefix,
+		flag:          l.flag,
+		useColors:     l.useColors,
+		callerOffset:  l.callerOffset,
+		defaultFields: make(map[string]interface{}),
+		showGoroutine: l.showGoroutine,
+	}
+	// Copy existing fields
+	for k, v := range l.defaultFields {
+		newLogger.defaultFields[k] = v
+	}
+	// Keep all writers except stdout
+	for _, w := range l.out {
+		if w == os.Stdout {
+			continue
+		}
+		newLogger.out = append(newLogger.out, w)
+	}
+	return newLogger
+}
+
+func main() {
+	Init(LevelDebug)
+
+	// Test basic logging
+	Debug("This is a debug message")
+	Info("This is an info message")
+	Warning("This is a warning message")
+	Error("This is an error message")
+
+	// Test logging with fields
+	logger := WithField("user", "testuser")
+	logger.Info("User logged in")
+
+	// Test logging with multiple fields
+	fields := map[string]interface{}{
+		"user": "testuser",
+		"role": "admin",
+		"id":   12345,
+	}
+	WithFields(fields).Info("User details")
+
+	// Test error logging with fields
+	WithField("error", "connection failed").Error("Database error")
+
+	logger.WithPrefix("CUSTOM").Info("This is a message with a custom prefix")
+
+	// Test goroutine ID display
+	SetShowGoroutine(true)
+	Info("This message should show goroutine ID")
+
+	// Test different log levels
+	SetLevel(LevelInfo)
+	Debug("This debug message should not appear")
+	Info("This info message should appear")
+
+	// Test with custom prefix
+	WithField("prefix", "custom").Info("Message with custom prefix")
+	Lua("This is a Lua message")
+
+	// Test Dump functionality
+	SetLevel(LevelDump) // Set level to show dump messages
+	
+	type ProjectData struct {
+		Title   string
+		Name    string
+		Data    string
+		Commits string
+	}
+
+	type Project struct {
+		Id   int64
+		Data *ProjectData
+	}
+
+	p := Project{
+		Id: 1,
+		Data: &ProjectData{
+			Title:   "Test",
+			Name:    "Mihai",
+			Data:    "Some data",
+			Commits: "Test Message",
+		},
+	}
+
+	// Test single object dump
+	Dump("FooBar called", p)
+
+	// Test multiple object dump
+	Dump("Multiple objects", p, fields, "string value", 42)
+}

safe.go

@@ -1,4 +1,4 @@
-package main
+package cylogger
 
 import (
 	"fmt"