From 71be0cba7bbd0f1a18819da208aabc52f1041ae2 Mon Sep 17 00:00:00 2001
From: xynngh <xynngh@protonmail.com>
Date: Fri, 23 Oct 2020 14:40:28 +0400
Subject: [PATCH] Fix importing blacklist files larger than 4000 bytes

---
 CHANGELOG.md                                                  | 4 ++++
 .../yetanothercallblocker/data/BlacklistImporterExporter.java | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 37b27e0..2e207e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed importing blacklist files larger than 4000 bytes.
+
 
 ## [0.5.9] - 2020-10-20
 
diff --git a/app/src/main/java/dummydomain/yetanothercallblocker/data/BlacklistImporterExporter.java b/app/src/main/java/dummydomain/yetanothercallblocker/data/BlacklistImporterExporter.java
index a9f12fc..b91c654 100644
--- a/app/src/main/java/dummydomain/yetanothercallblocker/data/BlacklistImporterExporter.java
+++ b/app/src/main/java/dummydomain/yetanothercallblocker/data/BlacklistImporterExporter.java
@@ -120,7 +120,9 @@ public class BlacklistImporterExporter {
         List<BlacklistItem> items = null;
 
         try (BufferedInputStream bis = new BufferedInputStream(inputStream)) {
-            bis.mark(4000);
+            // BufferedReaders used in `isYacbBackup` and `isNoPhoneSpamBackup` use 8192 char buffers,
+            // the max size of a UTF-8 char is 4 bytes.
+            bis.mark(8192 * 4);
 
             if (isYacbBackup(new InputStreamReader(bis))) {
                 bis.reset();