added windows compatibility

pref.go

@@ -16,6 +16,7 @@ func applyPrefModifications(targetFilePath string, modifications []string) error
 	}
 	defer targetFile.Close()
 
+	// Create a temporary file
 	tempFilePath := targetFilePath + ".tmp"
 	tempFile, err := os.Create(tempFilePath)
 	if err != nil {
@@ -23,30 +24,32 @@ func applyPrefModifications(targetFilePath string, modifications []string) error
 	}
 	defer tempFile.Close()
 
-	scanner := bufio.NewScanner(targetFile)
-	modMap := map[string]string{}
-
-	// Prepare the modification map
+	// Parse modifications into a map for easy lookup
+	modMap := make(map[string]string)
 	for _, mod := range modifications {
 		if strings.HasPrefix(mod, "+pref") {
 			// Strip the `+` and extract the key within parentheses
 			start := strings.Index(mod, "(")
 			end := strings.LastIndex(mod, ")")
 			if start > 0 && end > start {
-				key := strings.TrimSpace(mod[start+1 : end])
-				modMap[key] = strings.TrimPrefix(mod, "+") // Remove the `+` prefix
+				key := strings.TrimSpace(mod[start+1 : end]) // Extract the preference key
+				modMap[key] = mod                            // Full modification line
 			}
 		}
 	}
 
-	modifiedLines := map[string]bool{}
+	scanner := bufio.NewScanner(targetFile)
+	modifiedLines := map[string]bool{} // Tracks applied modifications
+
+	// Process each line of the target file
 	for scanner.Scan() {
 		line := scanner.Text()
+		lineModified := false
 
 		// Check if the line matches any modification key
-		lineModified := false
 		for key, replacement := range modMap {
 			if strings.Contains(line, key) && !modifiedLines[key] {
+				// Write the replacement line
 				fmt.Printf("Replacing line: %s\n", line)
 				if _, err := tempFile.WriteString(replacement + "\n"); err != nil {
 					return fmt.Errorf("failed to write to temp file: %v", err)
@@ -69,21 +72,25 @@ func applyPrefModifications(targetFilePath string, modifications []string) error
 		return fmt.Errorf("failed to read target file: %v", err)
 	}
 
-	// Write remaining modifications (new preferences)
+	// Append remaining modifications that were not in the file
 	for key, replacement := range modMap {
 		if !modifiedLines[key] {
-			// Remove the `+` prefix before writing
-			cleanReplacement := strings.TrimPrefix(replacement, "+")
-			if _, err := tempFile.WriteString(cleanReplacement + "\n"); err != nil {
-				return fmt.Errorf("failed to write new preference to temp file: %v", err)
+			fmt.Printf("Adding new preference: %s\n", replacement)
+			if _, err := tempFile.WriteString(replacement + "\n"); err != nil {
+				return fmt.Errorf("failed to append new preference to temp file: %v", err)
 			}
 		}
 	}
 
-	// Replace the original file with the temporary file
+	// Close the files to ensure proper cleanup
+	tempFile.Close()
+	targetFile.Close()
+
+	// Replace the original file with the modified temp file
 	if err := os.Rename(tempFilePath, targetFilePath); err != nil {
 		return fmt.Errorf("failed to replace target file: %v", err)
 	}
 
+	fmt.Println("Preferences successfully modified.")
 	return nil
 }