Java tutorial
/* * Everychan Android (Meta Imageboard Client) * Copyright (C) 2014-2016 miku-nyan <https://github.com/miku-nyan> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.nttec.everychan.ui.tabs; import java.io.File; import java.io.IOException; import java.util.Locale; import java.util.Random; import org.apache.commons.lang3.tuple.Pair; import com.nttec.everychan.R; import com.nttec.everychan.api.models.UrlPageModel; import com.nttec.everychan.api.util.CryptoUtils; import com.nttec.everychan.common.Logger; import com.nttec.everychan.common.MainApplication; import com.nttec.everychan.containers.ReadableContainer; import com.nttec.everychan.ui.MainActivity; import com.nttec.everychan.ui.downloading.DownloadingService; import android.content.res.Resources; import android.widget.Toast; public class LocalHandler { private static final String TAG = "LocalHandler"; public static void open(final String filename, final MainActivity activity) { TabModel model = getTabModel(filename, activity.getResources()); if (model == null) { Toast.makeText(activity, R.string.error_open_local, Toast.LENGTH_LONG).show(); return; } TabsAdapter tabsAdapter = activity.tabsAdapter; for (int i = 0; i < tabsAdapter.getCount(); ++i) { if (tabsAdapter.getItem(i).hash != null && tabsAdapter.getItem(i).hash.equals(model.hash)) { tabsAdapter.getItem(i).forceUpdate = true; tabsAdapter.setSelectedItem(i); return; } } tabsAdapter.add(model); tabsAdapter.setSelectedItemId(model.id); } public static TabModel getTabModel(String filename, Resources resources) { File file = new File(filename); if (file.exists() && !file.isDirectory()) { String lfilename = filename.toLowerCase(Locale.US); if (!lfilename.endsWith(".zip") && !lfilename.endsWith(".mht") && !lfilename.endsWith(".mhtml")) { file = file.getParentFile(); filename = file.getAbsolutePath(); } } ReadableContainer zip = null; UrlPageModel pageModel; String pageTitle; try { zip = ReadableContainer.obtain(file); Pair<String, UrlPageModel> p = MainApplication.getInstance().serializer .loadPageInfo(zip.openStream(DownloadingService.MAIN_OBJECT_FILE)); pageTitle = p.getLeft(); pageModel = p.getRight(); } catch (Exception e) { Logger.e(TAG, e); MainApplication.getInstance().database.removeSavedThread(filename); return null; } finally { try { if (zip != null) zip.close(); } catch (IOException e) { e.printStackTrace(); } } TabModel model = new TabModel(); model.type = TabModel.TYPE_LOCAL; model.id = new Random().nextLong(); model.title = pageTitle; model.pageModel = pageModel; model.hash = CryptoUtils.computeMD5(filename); try { model.webUrl = MainApplication.getInstance().getChanModule(pageModel.chanName).buildUrl(pageModel); } catch (IllegalArgumentException e) { model.webUrl = null; } catch (NullPointerException e) { return null; } model.localFilePath = filename; model.forceUpdate = true; return model; } }