add del command

add tests for all commands

wrap entry point with fang

add --version flag
target to Taskfile

cmd/util.go

@@ -0,0 +1,32 @@
+package cmd
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strings"
+)
+
+// readExistingPatterns reads the existing patterns from the exclude file, ignoring comments and empty lines
+func readExistingPatterns(f io.Reader) ([]string, error) {
+	var patterns []string
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line != "" && !strings.HasPrefix(line, "#") {
+			patterns = append(patterns, line)
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		return nil, fmt.Errorf("error scanning exclude file: %v", err)
+	}
+	return patterns, nil
+}
+
+// writeDefaultExcludeContent writes the default exclude content to the writer
+func writeDefaultExcludeContent(w io.Writer) error {
+	if _, err := w.Write([]byte(defaultExcludeFileContent)); err != nil {
+		return fmt.Errorf("error writing default exclude file: %w", err)
+	}
+	return nil
+}