add: sanitize file name #117

Author: Wsine

cmd/download.go

@@ -104,7 +104,7 @@ func downloadDocument(ctx context.Context, client *core.Client, url string, opts
 	// Write to markdown file
 	mdName := fmt.Sprintf("%s.md", docToken)
 	if dlConfig.Output.TitleAsFilename {
-		mdName = fmt.Sprintf("%s.md", title)
+		mdName = fmt.Sprintf("%s.md", utils.SanitizeFileName(title))
 	}
 	outputPath := filepath.Join(opts.outputDir, mdName)
 	if err = os.WriteFile(outputPath, []byte(result), 0o644); err != nil {

utils/common.go

@@ -29,3 +29,11 @@ func PrettyPrint(i interface{}) string {
 	s, _ := json.MarshalIndent(i, "", "  ")
 	return string(s)
 }
+
+func SanitizeFileName(title string) string {
+	invalidChars := []string{"/", "\\", ":", "*", "?", "\"", "<", ">", "|"}
+	for _, char := range invalidChars {
+		title = strings.ReplaceAll(title, char, "_")
+	}
+	return title
+}