Hallucinate a bunch of docs

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colors.go

@@ -1,4 +1,8 @@
-package main
+// Package cylogger provides ANSI color constants and utilities for terminal output.
+// This file contains all the color constants used by the logger for styling log messages.
+// It includes regular colors, bold colors, underlined colors, background colors,
+// high intensity colors, and utility functions for generating random colors.
+package cylogger
 
 import (
 	"fmt"
@@ -10,81 +14,109 @@ const (
 	Reset = "\033[0m" // Text Reset
 
 	// Regular Colors
-	Black  = "\033[0;30m" // Black
+	Black   = "\033[0;30m"     // Black
-	Red    = "\033[0;31m" // Red
+	Red     = "\033[0;31m"     // Red
-	Green  = "\033[0;32m" // Green
+	Green   = "\033[0;32m"     // Green
-	Yellow = "\033[0;33m" // Yellow
+	Yellow  = "\033[0;33m"     // Yellow
-	Blue   = "\033[0;34m" // Blue
+	Blue    = "\033[0;34m"     // Blue
-	Purple = "\033[0;35m" // Purple
+	Purple  = "\033[0;35m"     // Purple
-	Cyan   = "\033[0;36m" // Cyan
+	Cyan    = "\033[0;36m"     // Cyan
-	White  = "\033[0;37m" // White
+	White   = "\033[0;37m"     // White
-	Orange = "\033[38;5;208m" // Orange
+	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
+	BBlack   = "\033[1;30m"       // Black
-	BRed    = "\033[1;31m" // Red
+	BRed     = "\033[1;31m"       // Red
-	BGreen  = "\033[1;32m" // Green
+	BGreen   = "\033[1;32m"       // Green
-	BYellow = "\033[1;33m" // Yellow
+	BYellow  = "\033[1;33m"       // Yellow
-	BBlue   = "\033[1;34m" // Blue
+	BBlue    = "\033[1;34m"       // Blue
-	BPurple = "\033[1;35m" // Purple
+	BPurple  = "\033[1;35m"       // Purple
-	BCyan   = "\033[1;36m" // Cyan
+	BCyan    = "\033[1;36m"       // Cyan
-	BWhite  = "\033[1;37m" // White
+	BWhite   = "\033[1;37m"       // White
-	BOrange = "\033[1;38;5;208m" // Bold Orange
+	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
+	UBlack   = "\033[4;30m"       // Black
-	URed    = "\033[4;31m" // Red
+	URed     = "\033[4;31m"       // Red
-	UGreen  = "\033[4;32m" // Green
+	UGreen   = "\033[4;32m"       // Green
-	UYellow = "\033[4;33m" // Yellow
+	UYellow  = "\033[4;33m"       // Yellow
-	UBlue   = "\033[4;34m" // Blue
+	UBlue    = "\033[4;34m"       // Blue
-	UPurple = "\033[4;35m" // Purple
+	UPurple  = "\033[4;35m"       // Purple
-	UCyan   = "\033[4;36m" // Cyan
+	UCyan    = "\033[4;36m"       // Cyan
-	UWhite  = "\033[4;37m" // White
+	UWhite   = "\033[4;37m"       // White
-	UOrange = "\033[4;38;5;208m" // Underline Orange
+	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_Black   = "\033[40m"       // Black
-	On_Red    = "\033[41m" // Red
+	On_Red     = "\033[41m"       // Red
-	On_Green  = "\033[42m" // Green
+	On_Green   = "\033[42m"       // Green
-	On_Yellow = "\033[43m" // Yellow
+	On_Yellow  = "\033[43m"       // Yellow
-	On_Blue   = "\033[44m" // Blue
+	On_Blue    = "\033[44m"       // Blue
-	On_Purple = "\033[45m" // Purple
+	On_Purple  = "\033[45m"       // Purple
-	On_Cyan   = "\033[46m" // Cyan
+	On_Cyan    = "\033[46m"       // Cyan
-	On_White  = "\033[47m" // White
+	On_White   = "\033[47m"       // White
-	On_Orange = "\033[48;5;208m" // Orange Background
+	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
+	IBlack   = "\033[0;90m"       // Black
-	IRed    = "\033[0;91m" // Red
+	IRed     = "\033[0;91m"       // Red
-	IGreen  = "\033[0;92m" // Green
+	IGreen   = "\033[0;92m"       // Green
-	IYellow = "\033[0;93m" // Yellow
+	IYellow  = "\033[0;93m"       // Yellow
-	IBlue   = "\033[0;94m" // Blue
+	IBlue    = "\033[0;94m"       // Blue
-	IPurple = "\033[0;95m" // Purple
+	IPurple  = "\033[0;95m"       // Purple
-	ICyan   = "\033[0;96m" // Cyan
+	ICyan    = "\033[0;96m"       // Cyan
-	IWhite  = "\033[0;97m" // White
+	IWhite   = "\033[0;97m"       // White
-	IOrange = "\033[0;38;5;208m" // Intense Orange
+	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
+	BIBlack   = "\033[1;90m"       // Black
-	BIRed    = "\033[1;91m" // Red
+	BIRed     = "\033[1;91m"       // Red
-	BIGreen  = "\033[1;92m" // Green
+	BIGreen   = "\033[1;92m"       // Green
-	BIYellow = "\033[1;93m" // Yellow
+	BIYellow  = "\033[1;93m"       // Yellow
-	BIBlue   = "\033[1;94m" // Blue
+	BIBlue    = "\033[1;94m"       // Blue
-	BIPurple = "\033[1;95m" // Purple
+	BIPurple  = "\033[1;95m"       // Purple
-	BICyan   = "\033[1;96m" // Cyan
+	BICyan    = "\033[1;96m"       // Cyan
-	BIWhite  = "\033[1;97m" // White
+	BIWhite   = "\033[1;97m"       // White
-	BIOrange = "\033[1;38;5;208m" // Bold Intense Orange
+	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_IBlack   = "\033[0;100m"      // Black
-	On_IRed    = "\033[0;101m" // Red
+	On_IRed     = "\033[0;101m"      // Red
-	On_IGreen  = "\033[0;102m" // Green
+	On_IGreen   = "\033[0;102m"      // Green
-	On_IYellow = "\033[0;103m" // Yellow
+	On_IYellow  = "\033[0;103m"      // Yellow
-	On_IBlue   = "\033[0;104m" // Blue
+	On_IBlue    = "\033[0;104m"      // Blue
-	On_IPurple = "\033[10;95m" // Purple
+	On_IPurple  = "\033[10;95m"      // Purple
-	On_ICyan   = "\033[0;106m" // Cyan
+	On_ICyan    = "\033[0;106m"      // Cyan
-	On_IWhite  = "\033[0;107m" // White
+	On_IWhite   = "\033[0;107m"      // White
-	On_IOrange = "\033[0;48;5;208m" // Intense Orange Background
+	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
@@ -94,6 +126,14 @@ var colors = []int{22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 3
 var colorsIndex int = -1
 var shuffled bool
 
+// GenerateRandomAnsiColor generates a random ANSI color code from a curated set of colors.
+// The colors are shuffled once and then cycled through in order.
+// This is useful for generating unique colors for different log sources or components.
+// The function returns a formatted ANSI color code that can be used for text styling.
+// Example:
+//
+//	color := cylogger.GenerateRandomAnsiColor()
+//	fmt.Printf("%sColored text%s", color, cylogger.Reset)
 func GenerateRandomAnsiColor() string {
 	if !shuffled {
 		rand.Shuffle(len(colors), func(i int, j int) {

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

@@ -1,5 +1,29 @@
-// package cylogger
+// Package cylogger provides a feature-rich, colored logging library for Go applications.
-package main
+// It offers structured logging with multiple levels, colored output, goroutine tracking,
+// panic recovery, and object dumping capabilities.
+//
+// Key Features:
+//   - Multiple log levels (Error, Warning, Info, Debug, Trace, Dump, Lua)
+//   - Colored terminal output with customizable styling
+//   - Structured logging with fields and context
+//   - Goroutine ID tracking
+//   - Panic recovery and safe goroutine execution
+//   - Object dumping for debugging and testing
+//   - Multiple output destinations (stdout, files)
+//   - Thread-safe operations
+//
+// Basic Usage:
+//
+//	cylogger.Init(cylogger.LevelInfo)
+//	cylogger.Info("Application started")
+//	cylogger.WithField("user", "john").Info("User logged in")
+//
+// Advanced Usage:
+//
+//	logger := cylogger.New(os.Stdout, "", log.LstdFlags)
+//	logger.SetLevel(cylogger.LevelDebug)
+//	logger.WithFields(map[string]interface{}{"service": "api", "version": "1.0"}).Info("Service initialized")
+package cylogger
 
 import (
 	"bytes"
@@ -14,38 +38,70 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/hexops/valast"
 )
 
 // TODO: Enable turning colors on and off maybe even per stream?
 
 var loglevel = flag.String("loglevel", "info", "log level")
 
-// LogLevel defines the severity of log messages
+// LogLevel defines the severity and type of log messages.
+// Lower values indicate higher priority. Messages are only logged if their level
+// is less than or equal to the current logger level.
 type LogLevel int
 
 const (
-	// LevelError is for critical errors that should always be displayed
+	// LevelError is for critical errors that should always be displayed.
+	// These represent serious problems that may cause the application to fail.
 	LevelError LogLevel = iota
-	// LevelWarning is for important warnings
+
+	// LevelWarning is for important warnings that indicate potential issues.
+	// These represent situations that are not errors but may require attention.
 	LevelWarning
-	// LevelInfo is for informational messages
+
+	// LevelInfo is for general informational messages about application flow.
+	// These provide context about what the application is doing.
 	LevelInfo
-	// LevelDebug is for detailed debugging information
+
+	// LevelDebug is for detailed debugging information.
+	// These are useful for diagnosing problems during development.
 	LevelDebug
-	// LevelTrace is for very detailed tracing information
+
+	// LevelTrace is for very detailed tracing information.
+	// These provide the most verbose output for deep debugging.
 	LevelTrace
-	// LevelLua is specifically for output from Lua scripts
+
+	// LevelDump is for dumping objects to console for regressive tests.
+	// This level is specifically designed for object inspection and testing.
+	LevelDump
+
+	// LevelLua is specifically for output from Lua scripts.
+	// This level bypasses normal level filtering and is always shown.
 	LevelLua
+
+	// LevelPrefix is used internally for styling user prefixes.
+	// This is not a logging level but a style identifier.
 	LevelPrefix
 )
 
-// LevelStyle defines the visual style for a log level
+// LevelStyle defines the visual styling configuration for a log level.
+// It controls how log messages appear in the terminal with colors and formatting.
 type LevelStyle struct {
-	Tag                    string // e.g., "ERROR", "INFO"
+	// Tag is the text label displayed for this log level (e.g., "ERROR", "INFO")
-	TagColor               string // ANSI code for tag text
+	Tag string
-	TagBackgroundColor     string // ANSI code for tag background
+
-	MessageColor           string // ANSI code for message text
+	// TagColor is the ANSI color code for the tag text
-	MessageBackgroundColor string // ANSI code for message background
+	TagColor string
+
+	// TagBackgroundColor is the ANSI color code for the tag background
+	TagBackgroundColor string
+
+	// MessageColor is the ANSI color code for the message text
+	MessageColor string
+
+	// MessageBackgroundColor is the ANSI color code for the message background
+	MessageBackgroundColor string
 }
 
 // levelStyles maps LogLevel to its display style
@@ -76,40 +132,72 @@ var levelStyles = map[LogLevel]LevelStyle{
 		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: BIBlack,  // Bold Intense Black (Dark Grey)
+		TagColor: BIGray,   // Bold Gray
 	},
 }
 
-// Logger is our custom logger with level support
+// Logger is a thread-safe, feature-rich logger that supports multiple output destinations,
+// structured logging, colored output, and various log levels. It can be used both as a
+// standalone logger or as part of a structured logging system with context fields.
 type Logger struct {
-	mu            sync.Mutex
+	// mu protects all fields from concurrent access
-	out           io.Writer
+	mu sync.Mutex
-	currentLevel  LogLevel
+
-	prefix        string
+	// out is the list of output destinations for log messages
-	userPrefix    string
+	out []io.Writer
-	flag          int
+
-	useColors     bool
+	// currentLevel determines which log messages are actually written
-	callerOffset  int
+	currentLevel LogLevel
+
+	// prefix is the standard Go log prefix (timestamp, file, etc.)
+	prefix string
+
+	// userPrefix is a custom user-defined prefix for log messages
+	userPrefix string
+
+	// flag controls which standard log information is included (timestamp, file, line, etc.)
+	flag int
+
+	// useColors determines whether ANSI color codes are included in output
+	useColors bool
+
+	// callerOffset adjusts the stack depth for caller information
+	callerOffset int
+
+	// defaultFields are key-value pairs included in all log messages from this logger
 	defaultFields map[string]interface{}
+
+	// showGoroutine determines whether goroutine ID is included in log messages
 	showGoroutine bool
 }
 
 var (
-	// Default is the global logger instance
+	// Default is the global logger instance used by package-level functions.
+	// It is automatically initialized when first used if not explicitly set.
 	Default *Logger
-	// defaultLogLevel is the default log level if not specified
+
+	// defaultLogLevel is the default log level used when initializing the logger
 	defaultLogLevel = LevelInfo
-	// Global mutex for DefaultLogger initialization
+
+	// initMutex protects the initialization of the Default logger from race conditions
 	initMutex sync.Mutex
 )
 
-// ParseLevel converts a string log level to LogLevel
+// ParseLevel converts a string representation of a log level to the corresponding LogLevel.
+// It accepts case-insensitive strings like "error", "warning", "info", "debug", "trace", "dump", and "lua".
+// If the string is not recognized, it returns the default log level (LevelInfo).
 func ParseLevel(levelStr string) LogLevel {
 	switch strings.ToUpper(levelStr) {
 	case "ERROR":
@@ -122,6 +210,8 @@ func ParseLevel(levelStr string) LogLevel {
 		return LevelDebug
 	case "TRACE":
 		return LevelTrace
+	case "DUMP":
+		return LevelDump
 	case "LUA":
 		return LevelLua
 	default:
@@ -129,7 +219,8 @@ func ParseLevel(levelStr string) LogLevel {
 	}
 }
 
-// String returns the string representation of the log level
+// String returns the string representation of the log level.
+// It returns the tag name (e.g., "ERROR", "INFO") or a formatted representation for unknown levels.
 func (l LogLevel) String() string {
 	if name, ok := levelStyles[l]; ok {
 		return name.Tag
@@ -137,10 +228,12 @@ func (l LogLevel) String() string {
 	return fmt.Sprintf("Level(%d)", l)
 }
 
-// New creates a new Logger instance
+// New creates a new Logger instance with the specified output destination, prefix, and flags.
+// The logger is initialized with default settings: LevelInfo log level, colors enabled,
+// goroutine tracking enabled, and no default fields.
 func New(out io.Writer, prefix string, flag int) *Logger {
 	return &Logger{
-		out:           out,
+		out:           []io.Writer{out},
 		currentLevel:  defaultLogLevel,
 		prefix:        prefix,
 		userPrefix:    "",
@@ -152,12 +245,22 @@ func New(out io.Writer, prefix string, flag int) *Logger {
 	}
 }
 
+// InitFlag initializes the default logger using the loglevel flag value.
+// This library defines a "loglevel" command-line flag that accepts values like "error", "warning", "info", "debug", "trace", "dump", or "lua".
+// This function should be called after flag.Parse() to use command-line log level configuration.
+// Example usage:
+//
+//	flag.Parse()
+//	cylogger.InitFlag()
+//	// Now the logger level is set based on the -loglevel flag
 func InitFlag() {
 	level := ParseLevel(*loglevel)
 	Init(level)
 }
 
-// Init initializes the DefaultLogger
+// Init initializes the Default logger with the specified log level.
+// If the Default logger is already initialized, it only updates the log level.
+// This function is thread-safe and can be called multiple times.
 func Init(level LogLevel) {
 	initMutex.Lock()
 	defer initMutex.Unlock()
@@ -168,45 +271,63 @@ func Init(level LogLevel) {
 	Default.SetLevel(level)
 }
 
-// SetLevel sets the current log level
+// SetLevel sets the current log level for the logger.
+// Only messages with a level less than or equal to this level will be logged.
+// This method is thread-safe.
 func (l *Logger) SetLevel(level LogLevel) {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	l.currentLevel = level
 }
 
-// GetLevel returns the current log level
+// GetLevel returns the current log level of the logger.
+// This method is thread-safe.
 func (l *Logger) GetLevel() LogLevel {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	return l.currentLevel
 }
 
-// SetCallerOffset sets the caller offset for correct file and line reporting
+// SetCallerOffset sets the caller offset for correct file and line reporting.
+// This is useful when the logger is wrapped in helper functions to ensure
+// the correct caller information is displayed.
 func (l *Logger) SetCallerOffset(offset int) {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	l.callerOffset = offset
 }
 
-// SetShowGoroutine sets whether to include goroutine ID in log messages
+// SetShowGoroutine sets whether to include goroutine ID in log messages.
+// This is useful for debugging concurrent applications where you need to track
+// which goroutine generated each log message.
 func (l *Logger) SetShowGoroutine(show bool) {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	l.showGoroutine = show
 }
 
-// ShowGoroutine returns whether goroutine ID is included in log messages
+// ShowGoroutine returns whether goroutine ID is included in log messages.
+// This method is thread-safe.
 func (l *Logger) ShowGoroutine() bool {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	return l.showGoroutine
 }
 
-// WithField adds a field to the logger's context
+// WithField creates a new logger instance with an additional field in its context.
+// The field will be included in all log messages from the returned logger, appearing as key=value pairs appended to the message.
+// This is useful for structured logging where you want to add context to a group of log messages.
+// Example:
+//
+//	logger := cylogger.WithField("user", "john")
+//	logger.Info("User logged in")  // Output: "User logged in user=john"
+//	logger.Error("Login failed")    // Output: "Login failed user=john"
+//
+// This is particularly useful for scoped logging in functions or loops where you want to track context
+// without continuously logging an ID or identifier.
 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,
@@ -227,10 +348,20 @@ func (l *Logger) WithField(key string, value interface{}) *Logger {
 	return newLogger
 }
 
-// WithFields adds multiple fields to the logger's context
+// WithFields creates a new logger instance with multiple additional fields in its context.
+// All fields will be included in all log messages from the returned logger, appearing as key=value pairs appended to the message.
+// This is useful for structured logging where you want to add multiple context fields.
+// Example:
+//
+//	fields := map[string]interface{}{"user": "john", "role": "admin", "session": "abc123"}
+//	logger := cylogger.WithFields(fields)
+//	logger.Info("Processing request")  // Output: "Processing request user=john role=admin session=abc123"
+//
+// This is particularly useful for scoped logging where you need to track multiple pieces of context
+// without repeatedly logging them in each message.
 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,
@@ -253,6 +384,18 @@ func (l *Logger) WithFields(fields map[string]interface{}) *Logger {
 	return newLogger
 }
 
+// WithPrefix creates a new logger instance with an additional user prefix.
+// The prefix will be displayed in all log messages from the returned logger, appearing as [prefix] before the message.
+// This is useful for adding context or module identification to log messages.
+// Example:
+//
+//	logger := cylogger.WithPrefix("AUTH")
+//	logger.Info("User authenticated")  // Output: "[AUTH] User authenticated"
+//	logger.Error("Login failed")     // Output: "[AUTH] Login failed"
+//
+// This is particularly useful for scoped logging in functions, loops, or modules where you want to know
+// what the log line refers to without continuously logging an ID or identifier.
+// Unlike WithField which appends fields to the end, WithPrefix prepends the prefix to the beginning.
 func (l *Logger) WithPrefix(prefix string) *Logger {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -261,7 +404,7 @@ 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),
@@ -279,6 +422,17 @@ func (l *Logger) WithPrefix(prefix string) *Logger {
 	return newLogger
 }
 
+// ToFile creates a new logger instance that writes to both the original outputs and a file.
+// The file is opened in append mode and will be created if it doesn't exist.
+// This is useful for logging to both console and file simultaneously.
+// Example:
+//
+//	logger := cylogger.New(os.Stdout, "", log.LstdFlags)
+//	fileLogger := logger.ToFile("app.log")
+//	fileLogger.Info("This will appear in both console and app.log")
+//
+// The file is opened with os.O_CREATE|os.O_WRONLY|os.O_APPEND flags, so it will be created if it doesn't exist
+// and new log entries will be appended to the end of the file.
 func (l *Logger) ToFile(filename string) *Logger {
 	file, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
 	if err != nil {
@@ -291,7 +445,7 @@ 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,
@@ -301,10 +455,17 @@ 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
 }
 
-// GetGoroutineID extracts the goroutine ID from the runtime stack
+// GetGoroutineID extracts the current goroutine ID from the runtime stack.
+// This is used internally by the logger to include goroutine information in log messages.
 func GetGoroutineID() string {
 	buf := make([]byte, 64)
 	n := runtime.Stack(buf, false)
@@ -478,42 +639,84 @@ 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
+// Error logs an error message at LevelError.
+// Error messages are always displayed regardless of the current log level.
 func (l *Logger) Error(format string, args ...interface{}) {
 	l.log(LevelError, format, args...)
 }
 
-// Warning logs a warning message
+// Warning logs a warning message at LevelWarning.
+// Warning messages indicate potential issues that should be noted.
 func (l *Logger) Warning(format string, args ...interface{}) {
 	l.log(LevelWarning, format, args...)
 }
 
-// Info logs an informational message
+// Info logs an informational message at LevelInfo.
+// Info messages provide general information about application flow.
 func (l *Logger) Info(format string, args ...interface{}) {
 	l.log(LevelInfo, format, args...)
 }
 
-// Debug logs a debug message
+// Debug logs a debug message at LevelDebug.
+// Debug messages provide detailed information useful for diagnosing problems.
 func (l *Logger) Debug(format string, args ...interface{}) {
 	l.log(LevelDebug, format, args...)
 }
 
-// Trace logs a trace message
+// Trace logs a trace message at LevelTrace.
+// Trace messages provide the most detailed information for deep debugging.
 func (l *Logger) Trace(format string, args ...interface{}) {
 	l.log(LevelTrace, format, args...)
 }
 
-// Lua logs a Lua message
+// Dump logs objects using valast for regressive tests at LevelDump.
+// This is useful for debugging and testing where you need to inspect object state.
+// The objects are formatted using valast for readable output.
+// Example:
+//
+//	type User struct { Name string; Age int }
+//	user := User{Name: "John", Age: 30}
+//	logger.Dump("User data", user)
+//	// Output: "User data:\nUser{Name: \"John\", Age: 30}"
+//
+// This is particularly useful for regressive testing where you need to capture
+// the exact state of objects for comparison or debugging purposes.
+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 at LevelLua.
+// Lua messages are always displayed regardless of the current log level.
+// This is specifically designed for output from Lua scripts.
 func (l *Logger) Lua(format string, args ...interface{}) {
 	l.log(LevelLua, format, args...)
 }
 
 // Global log functions that use DefaultLogger
 
-// Error logs an error message using the default logger
+// Error logs an error message using the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func Error(format string, args ...interface{}) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -521,7 +724,8 @@ func Error(format string, args ...interface{}) {
 	Default.Error(format, args...)
 }
 
-// Warning logs a warning message using the default logger
+// Warning logs a warning message using the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func Warning(format string, args ...interface{}) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -529,7 +733,8 @@ func Warning(format string, args ...interface{}) {
 	Default.Warning(format, args...)
 }
 
-// Info logs an informational message using the default logger
+// Info logs an informational message using the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func Info(format string, args ...interface{}) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -537,7 +742,8 @@ func Info(format string, args ...interface{}) {
 	Default.Info(format, args...)
 }
 
-// Debug logs a debug message using the default logger
+// Debug logs a debug message using the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func Debug(format string, args ...interface{}) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -545,7 +751,8 @@ func Debug(format string, args ...interface{}) {
 	Default.Debug(format, args...)
 }
 
-// Trace logs a trace message using the default logger
+// Trace logs a trace message using the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func Trace(format string, args ...interface{}) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -553,7 +760,17 @@ func Trace(format string, args ...interface{}) {
 	Default.Trace(format, args...)
 }
 
-// Lua logs a Lua message using the default logger
+// Dump logs objects using valast for regressive tests using the default logger.
+// This is a convenience function that uses the global Default logger instance.
+func Dump(message string, objects ...interface{}) {
+	if Default == nil {
+		Init(defaultLogLevel)
+	}
+	Default.Dump(message, objects...)
+}
+
+// Lua logs a Lua message using the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func Lua(format string, args ...interface{}) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -561,7 +778,9 @@ func Lua(format string, args ...interface{}) {
 	Default.Lua(format, args...)
 }
 
-// LogPanic logs a panic error and its stack trace
+// LogPanic logs a panic error and its stack trace using the default logger.
+// This is useful for logging panics that have been recovered elsewhere.
+// The function logs the panic value and full stack trace.
 func LogPanic(r interface{}) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -571,7 +790,8 @@ func LogPanic(r interface{}) {
 	Default.Error("PANIC: %v\n%s", r, stack[:n])
 }
 
-// SetLevel sets the log level for the default logger
+// SetLevel sets the log level for the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func SetLevel(level LogLevel) {
 	if Default == nil {
 		Init(level)
@@ -580,7 +800,8 @@ func SetLevel(level LogLevel) {
 	Default.SetLevel(level)
 }
 
-// GetLevel gets the log level for the default logger
+// GetLevel gets the log level for the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func GetLevel() LogLevel {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -588,7 +809,8 @@ func GetLevel() LogLevel {
 	return Default.GetLevel()
 }
 
-// WithField returns a new logger with the field added to the default logger's context
+// WithField returns a new logger with the field added to the default logger's context.
+// This is a convenience function that uses the global Default logger instance.
 func WithField(key string, value interface{}) *Logger {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -596,7 +818,8 @@ func WithField(key string, value interface{}) *Logger {
 	return Default.WithField(key, value)
 }
 
-// WithFields returns a new logger with the fields added to the default logger's context
+// WithFields returns a new logger with the fields added to the default logger's context.
+// This is a convenience function that uses the global Default logger instance.
 func WithFields(fields map[string]interface{}) *Logger {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -604,7 +827,8 @@ func WithFields(fields map[string]interface{}) *Logger {
 	return Default.WithFields(fields)
 }
 
-// SetShowGoroutine enables or disables goroutine ID display in the default logger
+// SetShowGoroutine enables or disables goroutine ID display in the default logger.
+// This is a convenience function that uses the global Default logger instance.
 func SetShowGoroutine(show bool) {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -612,7 +836,8 @@ func SetShowGoroutine(show bool) {
 	Default.SetShowGoroutine(show)
 }
 
-// ShowGoroutine returns whether goroutine ID is included in default logger's messages
+// ShowGoroutine returns whether goroutine ID is included in default logger's messages.
+// This is a convenience function that uses the global Default logger instance.
 func ShowGoroutine() bool {
 	if Default == nil {
 		Init(defaultLogLevel)
@@ -620,6 +845,41 @@ func ShowGoroutine() bool {
 	return Default.ShowGoroutine()
 }
 
+// NoStdout creates a new logger instance that excludes stdout from its output destinations.
+// This is useful when you want to log only to files or other destinations, not to the console.
+// The original logger's stdout output is filtered out while keeping all other output destinations.
+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)
 
@@ -658,4 +918,35 @@ func main() {
 	// 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

@@ -1,11 +1,20 @@
-package main
+// Package cylogger provides panic recovery and safe goroutine execution utilities.
+// These functions help prevent panics from crashing your application by catching
+// them and logging them appropriately.
+package cylogger
 
 import (
 	"fmt"
 	"runtime/debug"
 )
 
-// PanicHandler handles a panic and logs it
+// PanicHandler handles a panic and logs it with goroutine ID and stack trace.
+// This function should be used with defer to catch panics in goroutines or functions.
+// When a panic occurs, it logs the panic value, goroutine ID, and full stack trace.
+// Example:
+//
+//	defer cylogger.PanicHandler()
+//	// Your code that might panic
 func PanicHandler() {
 	if r := recover(); r != nil {
 		goroutineID := GetGoroutineID()
@@ -14,8 +23,16 @@ func PanicHandler() {
 	}
 }
 
-// SafeGo launches a goroutine with panic recovery
+// SafeGo launches a goroutine with panic recovery.
-// Usage: logger.SafeGo(func() { ... your code ... })
+// If the goroutine panics, the panic will be caught and logged instead of crashing the program.
+// This is useful for running potentially unstable code in goroutines.
+// Usage: cylogger.SafeGo(func() { ... your code ... })
+// Example:
+//
+//	cylogger.SafeGo(func() {
+//	    // Code that might panic
+//	    riskyOperation()
+//	})
 func SafeGo(f func()) {
 	go func() {
 		defer PanicHandler()
@@ -23,8 +40,16 @@ func SafeGo(f func()) {
 	}()
 }
 
-// SafeGoWithArgs launches a goroutine with panic recovery and passes arguments
+// SafeGoWithArgs launches a goroutine with panic recovery and passes arguments.
-// Usage: logger.SafeGoWithArgs(func(arg1, arg2 interface{}) { ... }, "value1", 42)
+// If the goroutine panics, the panic will be caught and logged instead of crashing the program.
+// This is useful for running potentially unstable code in goroutines with specific arguments.
+// Usage: cylogger.SafeGoWithArgs(func(arg1, arg2 interface{}) { ... }, "value1", 42)
+// Example:
+//
+//	cylogger.SafeGoWithArgs(func(args ...interface{}) {
+//	    // Code that might panic with arguments
+//	    processData(args[0], args[1])
+//	}, "data1", 42)
 func SafeGoWithArgs(f func(...interface{}), args ...interface{}) {
 	go func() {
 		defer PanicHandler()
@@ -32,8 +57,18 @@ func SafeGoWithArgs(f func(...interface{}), args ...interface{}) {
 	}()
 }
 
-// SafeExec executes a function with panic recovery
+// SafeExec executes a function with panic recovery and returns an error if a panic occurs.
-// Useful for code that should not panic
+// This is useful for code that should not panic but might, allowing you to handle panics gracefully.
+// If the function panics, it returns an error describing the panic instead of crashing the program.
+// Example:
+//
+//	err := cylogger.SafeExec(func() {
+//	    // Code that might panic
+//	    riskyOperation()
+//	})
+//	if err != nil {
+//	    // Handle the panic as an error
+//	}
 func SafeExec(f func()) (err error) {
 	defer func() {
 		if r := recover(); r != nil {