Support non-ASCII characters

Author: Voklen

docs/Usage/Storage Access Framework.md

@@ -161,7 +161,7 @@ final Uint8List? fileContent = await getDocumentContent(uri);
 /// Handle [fileContent]...
 
 /// If the file is intended to be human readable, you can convert the output to [String]:
-print(String.fromCharCodes(fileContent));
+print(utf8.decode(fileContent));
 ```
 
 ### <samp>getRealPathFromUri</samp>

example/lib/utils/document_file_utils.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:fl_toast/fl_toast.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -67,7 +69,7 @@ extension ShowDocumentFileContents on DocumentFile {
               return Image.memory(content);
             }
 
-            final contentAsString = String.fromCharCodes(content);
+            final contentAsString = utf8.decode(content);
 
             final fileIsEmpty = contentAsString.isEmpty;
 

lib/src/saf/saf.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:convert';
 import 'dart:io';
 import 'dart:typed_data';
 
@@ -573,7 +574,7 @@ Future<String?> getDocumentContentAsString(
 }) async {
   final Uint8List? bytes = await getDocumentContent(uri);
 
-  return bytes?.apply((Uint8List a) => String.fromCharCodes(a));
+  return bytes?.apply((Uint8List a) => utf8.decode(a));
 }
 
 /// {@template sharedstorage.saf.getDocumentContentAsString}