From f18cd9e2881564465b9758ddef076fa3485cf6cf Mon Sep 17 00:00:00 2001
From: Ryan Meredith <rwm@udel.edu>
Date: Sun, 29 Nov 2020 02:37:22 -0500
Subject: [PATCH] Android: Clear Log file

---
 .../features/settings/ui/SettingsAdapter.java | 21 +++++++++++++++++++
 .../ui/SettingsFragmentPresenter.java         |  2 ++
 .../app/src/main/res/values/strings.xml       |  2 ++
 3 files changed, 25 insertions(+)

diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsAdapter.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsAdapter.java
index b2091d3d05..c751a7750e 100644
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsAdapter.java
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsAdapter.java
@@ -39,8 +39,13 @@ import org.dolphinemu.dolphinemu.features.settings.ui.viewholder.SingleChoiceVie
 import org.dolphinemu.dolphinemu.features.settings.ui.viewholder.SliderViewHolder;
 import org.dolphinemu.dolphinemu.features.settings.ui.viewholder.SubmenuViewHolder;
 import org.dolphinemu.dolphinemu.ui.main.MainPresenter;
+import org.dolphinemu.dolphinemu.utils.DirectoryInitialization;
 import org.dolphinemu.dolphinemu.utils.FileBrowserHelper;
+import org.dolphinemu.dolphinemu.utils.Log;
 
+import java.io.File;
+import java.io.IOException;
+import java.io.RandomAccessFile;
 import java.security.InvalidParameterException;
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -339,6 +344,22 @@ public final class SettingsAdapter extends RecyclerView.Adapter<SettingViewHolde
     mView.onSettingChanged();
   }
 
+  public static void clearLog()
+  {
+    // Don't delete the log in case it is being monitored by another app.
+    File log = new File(DirectoryInitialization.getUserDirectory() + "/Logs/dolphin.log");
+
+    try
+    {
+      RandomAccessFile raf = new RandomAccessFile(log, "rw");
+      raf.setLength(0);
+    }
+    catch (IOException e)
+    {
+      Log.error("[SettingsAdapter] Failed to clear log file: " + e.getMessage());
+    }
+  }
+
   private void handleMenuTag(MenuTag menuTag, int value)
   {
     if (menuTag != null)
diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.java
index f778d3919d..472cd3fc8a 100644
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.java
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.java
@@ -638,6 +638,8 @@ public final class SettingsFragmentPresenter
             () -> mView.getAdapter().setAllLogTypes(true)));
     sl.add(new RunRunnable(R.string.log_disable_all, 0, R.string.log_disable_all_confirmation, 0,
             () -> mView.getAdapter().setAllLogTypes(false)));
+    sl.add(new RunRunnable(R.string.log_clear, 0, R.string.log_clear_confirmation, 0,
+            SettingsAdapter::clearLog));
 
     sl.add(new HeaderSetting(R.string.log_types, 0));
     for (Map.Entry<String, String> entry : LOG_TYPE_NAMES.entrySet())
diff --git a/Source/Android/app/src/main/res/values/strings.xml b/Source/Android/app/src/main/res/values/strings.xml
index e940416ca9..ed88152bc1 100644
--- a/Source/Android/app/src/main/res/values/strings.xml
+++ b/Source/Android/app/src/main/res/values/strings.xml
@@ -283,6 +283,8 @@
     <string name="log_enable_all_confirmation">Are you sure you want to enable all log types?</string>
     <string name="log_disable_all">Disable all Log Types</string>
     <string name="log_disable_all_confirmation">Are you sure you want to disable all log types?</string>
+    <string name="log_clear">Clear Log file</string>
+    <string name="log_clear_confirmation">Are you sure you want to clear the log file?</string>
     <string name="log_types">Log Types</string>
 
     <!-- Debug -->