Move Magisk Manager files into subfolder

app/src/full/java/com/topjohnwu/magisk/MagiskLogFragment.java

@@ -0,0 +1,145 @@
+package com.topjohnwu.magisk;
+
+import android.Manifest;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.design.widget.Snackbar;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.HorizontalScrollView;
+import android.widget.ProgressBar;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+import com.topjohnwu.magisk.components.Fragment;
+import com.topjohnwu.magisk.components.SnackbarMaker;
+import com.topjohnwu.magisk.utils.Const;
+import com.topjohnwu.magisk.utils.Utils;
+import com.topjohnwu.superuser.Shell;
+import com.topjohnwu.superuser.ShellUtils;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Calendar;
+import java.util.List;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import butterknife.Unbinder;
+
+public class MagiskLogFragment extends Fragment {
+
+    private Unbinder unbinder;
+
+    @BindView(R.id.txtLog) TextView txtLog;
+    @BindView(R.id.svLog) ScrollView svLog;
+    @BindView(R.id.hsvLog) HorizontalScrollView hsvLog;
+    @BindView(R.id.progressBar) ProgressBar progressBar;
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_magisk_log, container, false);
+        unbinder = ButterKnife.bind(this, view);
+        setHasOptionsMenu(true);
+        txtLog.setTextIsSelectable(true);
+        return view;
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        getActivity().setTitle(R.string.log);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        readLogs();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        unbinder.unbind();
+    }
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        inflater.inflate(R.menu.menu_log, menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.menu_refresh:
+                readLogs();
+                return true;
+            case R.id.menu_save:
+                runWithPermission(new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE }, this::saveLogs);
+                return true;
+            case R.id.menu_clear:
+                clearLogs();
+                return true;
+            default:
+                return true;
+        }
+    }
+
+    public void readLogs() {
+        Shell.Async.su(new Shell.Async.Callback() {
+            @Override
+            public void onTaskResult(@Nullable List<String> out, @Nullable List<String> err) {
+                progressBar.setVisibility(View.GONE);
+                if (ShellUtils.isValidOutput(out)) {
+                    txtLog.setText(TextUtils.join("\n", out));
+                } else {
+                    txtLog.setText(R.string.log_is_empty);
+                }
+                svLog.postDelayed(() -> svLog.fullScroll(ScrollView.FOCUS_DOWN), 100);
+                hsvLog.postDelayed(() -> hsvLog.fullScroll(ScrollView.FOCUS_LEFT), 100);
+            }
+
+            @Override
+            public void onTaskError(@NonNull Throwable throwable) {
+                txtLog.setText(R.string.log_is_empty);
+            }
+        }, "cat " + Const.MAGISK_LOG + " | tail -n 5000");
+    }
+
+    public void saveLogs() {
+        Calendar now = Calendar.getInstance();
+        String filename = Utils.fmt("magisk_log_%04d%02d%02d_%02d%02d%02d.log",
+                now.get(Calendar.YEAR), now.get(Calendar.MONTH) + 1,
+                now.get(Calendar.DAY_OF_MONTH), now.get(Calendar.HOUR_OF_DAY),
+                now.get(Calendar.MINUTE), now.get(Calendar.SECOND));
+
+        File targetFile = new File(Const.EXTERNAL_PATH + "/logs", filename);
+        targetFile.getParentFile().mkdirs();
+        try {
+            targetFile.createNewFile();
+        } catch (IOException e) {
+            return;
+        }
+        Shell.Async.su(new Shell.Async.Callback() {
+            @Override
+            public void onTaskResult(@Nullable List<String> out, @Nullable List<String> err) {
+                SnackbarMaker.make(txtLog, targetFile.getPath(), Snackbar.LENGTH_SHORT).show();
+            }
+
+            @Override
+            public void onTaskError(@NonNull Throwable throwable) {}
+        }, "cat " + Const.MAGISK_LOG + " > " + targetFile);
+    }
+
+    public void clearLogs() {
+        Shell.Async.su("echo -n > " + Const.MAGISK_LOG);
+        SnackbarMaker.make(txtLog, R.string.logs_cleared, Snackbar.LENGTH_SHORT).show();
+    }
+}