github.com/walidsa3d/uncomment

package main

import ( "bufio" "flag" "fmt" "io" "os" "path/filepath" "strings" )

func main() { inputFile := flag.String("input", "", "Input configuration file") flag.Parse()

if *inputFile == "" {
	fmt.Println("Please provide an input file using the -input flag")
	os.Exit(1)
}

err := processFile(*inputFile)
if err != nil {
	fmt.Printf("Error processing file: %v\n", err)
	os.Exit(1)
}

fmt.Println("File processed successfully")

}

func processFile(filename string) error { // Create backup file backupFile := filename + ".bak" err := copyFile(filename, backupFile) if err != nil { return fmt.Errorf("failed to create backup: %v", err) }

// Open input file
input, err := os.Open(filename)
if err != nil {
	return fmt.Errorf("failed to open input file: %v", err)
}
defer input.Close()

// Create temporary output file
tempFile := filename + ".temp"
output, err := os.Create(tempFile)
if err != nil {
	return fmt.Errorf("failed to create temporary file: %v", err)
}
defer output.Close()

// Process the file
scanner := bufio.NewScanner(input)
writer := bufio.NewWriter(output)

for scanner.Scan() {
	line := scanner.Text()
	if !isComment(line) {
		_, err := writer.WriteString(line + "\n")
		if err != nil {
			return fmt.Errorf("failed to write to temporary file: %v", err)
		}
	}
}

if err := scanner.Err(); err != nil {
	return fmt.Errorf("error reading input file: %v", err)
}

writer.Flush()

// Replace original file with processed file
err = os.Rename(tempFile, filename)
if err != nil {
	return fmt.Errorf("failed to replace original file: %v", err)
}

return nil

}

func isComment(line string) bool { trimmedLine := strings.TrimSpace(line) return strings.HasPrefix(trimmedLine, "#") || strings.HasPrefix(trimmedLine, "//") }

func copyFile(src, dst string) error { sourceFile, err := os.Open(src) if err != nil { return err } defer sourceFile.Close()

destFile, err := os.Create(dst)
if err != nil {
	return err
}
defer destFile.Close()

_, err = io.Copy(destFile, sourceFile)
if err != nil {
	return err
}

return destFile.Sync()

}