Neatly align log columns

cmd/log_format_test/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"modify/logger"
+	"time"
+)
+
+func main() {
+	// Initialize logger with DEBUG level
+	logger.Init(logger.LevelDebug)
+
+	// Test different log levels
+	logger.Info("This is an info message")
+	logger.Debug("This is a debug message")
+	logger.Warning("This is a warning message")
+	logger.Error("This is an error message")
+	logger.Trace("This is a trace message (not visible at DEBUG level)")
+
+	// Test with a goroutine
+	logger.SafeGo(func() {
+		time.Sleep(10 * time.Millisecond)
+		logger.Info("Message from goroutine")
+	})
+
+	// Wait for goroutine to complete
+	time.Sleep(20 * time.Millisecond)
+}

logger/logger.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"path/filepath"
 	"runtime"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -269,9 +270,10 @@ func (l *Logger) formatMessage(level LogLevel, format string, args ...interface{
 		if l.flag&log.Lshortfile != 0 {
 			file = filepath.Base(file)
 		}
-		caller = fmt.Sprintf("%s:%d ", file, line)
+		caller = fmt.Sprintf("%-25s ", file+":"+strconv.Itoa(line))
 	}
 
+	// Format the timestamp with fixed width
 	var timeStr string
 	if l.flag&(log.Ldate|log.Ltime|log.Lmicroseconds) != 0 {
 		t := time.Now()
@@ -283,19 +285,24 @@ func (l *Logger) formatMessage(level LogLevel, format string, args ...interface{
 			if l.flag&log.Lmicroseconds != 0 {
 				timeStr += fmt.Sprintf(".%06d", t.Nanosecond()/1000)
 			}
-			timeStr += " "
 		}
+		timeStr = fmt.Sprintf("%-15s ", timeStr)
 	}
 
-	// Add goroutine ID if enabled
+	// Add goroutine ID if enabled, with fixed width
 	var goroutineStr string
 	if l.showGoroutine {
 		goroutineID := GetGoroutineID()
-		goroutineStr = fmt.Sprintf("[g:%s] ", goroutineID)
+		goroutineStr = fmt.Sprintf("[g:%-4s] ", goroutineID)
 	}
 
-	return fmt.Sprintf("%s%s%s%s%s[%s%s%s]%s %s\n",
+	// Create a colored level indicator with both brackets colored
-		l.prefix, timeStr, caller, goroutineStr, levelColor, levelNames[level], resetColor, fields, resetColor, msg)
+	levelStr := fmt.Sprintf("%s[%s]%s", levelColor, levelNames[level], levelColor)
+	// Add a space after the level and before the reset color
+	levelColumn := fmt.Sprintf("%s %s", levelStr, resetColor)
+
+	return fmt.Sprintf("%s%s%s%s%s%s%s\n",
+		l.prefix, timeStr, caller, goroutineStr, levelColumn, msg, fields)
 }
 
 // log logs a message at the specified level