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phochephoche
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add file operate in lua
1 parent eddef68 commit 4ef2256

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4 files changed

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‎VideoOS/LuaViewSDK/src/com/taobao/luaview/fun/binder/kit/FileBinder.java‎

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@@ -0,0 +1,41 @@
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/*
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* Created by LuaView.
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* Copyright (c) 2017, Alibaba Group. All rights reserved.
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*
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* This source code is licensed under the MIT.
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* For the full copyright and license information,please view the LICENSE file in the root directory of this source tree.
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*/
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package com.taobao.luaview.fun.binder.kit;
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import com.taobao.luaview.fun.base.BaseFunctionBinder;
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import com.taobao.luaview.userdata.kit.UDFile;
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import org.luaj.vm2.LuaValue;
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import org.luaj.vm2.lib.LibFunction;
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/**
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* File operation
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*
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* @author song
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* @date 16/12/5
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* 主要功能描述
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* 修改描述
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* 下午2:41 song XXX
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*/
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public class FileBinder extends BaseFunctionBinder {
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public FileBinder() {
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super("File");
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}
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@Override
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public Class<? extends LibFunction> getMapperClass() {
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return null;
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}
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@Override
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public LuaValue createCreator(LuaValue env, final LuaValue metaTable) {
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return new UDFile(env.checkglobals(), metaTable);
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}
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}

‎VideoOS/LuaViewSDK/src/com/taobao/luaview/global/LuaViewManager.java‎

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@@ -25,6 +25,7 @@
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import com.taobao.luaview.fun.binder.indicator.UICircleViewPagerIndicatorBinder;
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import com.taobao.luaview.fun.binder.kit.ActionBarBinder;
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import com.taobao.luaview.fun.binder.kit.DataBinder;
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import com.taobao.luaview.fun.binder.kit.FileBinder;
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import com.taobao.luaview.fun.binder.kit.JsonBinder;
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import com.taobao.luaview.fun.binder.kit.SystemBinder;
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import com.taobao.luaview.fun.binder.kit.TimerBinder;
@@ -192,6 +193,7 @@ static void loadLuaViewLibs(final Globals globals) {
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globals.tryLazyLoad(new ActionBarBinder());
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globals.tryLazyLoad(new DataBinder());
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globals.tryLazyLoad(new JsonBinder());
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globals.tryLazyLoad(new FileBinder());
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//常量
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globals.tryLazyLoad(new AlignBinder());

‎VideoOS/LuaViewSDK/src/com/taobao/luaview/userdata/kit/UDFile.java‎

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/*
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* Created by LuaView.
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* Copyright (c) 2017, Alibaba Group. All rights reserved.
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*
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* This source code is licensed under the MIT.
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* For the full copyright and license information,please view the LICENSE file in the root
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* directory of this source tree.
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*/
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package com.taobao.luaview.userdata.kit;
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import android.text.TextUtils;
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import com.taobao.luaview.fun.mapper.LuaViewApi;
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import com.taobao.luaview.fun.mapper.LuaViewLib;
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import com.taobao.luaview.global.LuaResourceFinder;
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import com.taobao.luaview.global.VmVersion;
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import com.taobao.luaview.scriptbundle.asynctask.SimpleTask1;
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import com.taobao.luaview.userdata.base.BaseLuaTable;
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import com.taobao.luaview.util.FileUtil;
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import com.taobao.luaview.util.LuaUtil;
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import org.luaj.vm2.Globals;
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import org.luaj.vm2.LuaString;
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import org.luaj.vm2.LuaValue;
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import org.luaj.vm2.Varargs;
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import org.luaj.vm2.lib.VarArgFunction;
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import java.io.File;
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import cn.com.venvy.App;
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import cn.com.venvy.common.utils.VenvyFileUtil;
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import cn.com.venvy.common.utils.VenvyIOUtils;
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/**
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* File 用户数据封装
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*
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* @author song
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* @date 15/9/6
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*/
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@LuaViewLib(revisions = {"20170306已对标"})
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@LuaViewApi(since = VmVersion.V_550)
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public class UDFile extends BaseLuaTable {
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public UDFile(Globals globals, LuaValue metatable) {
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super(globals, metatable);
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init();
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}
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private void init() {
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set("save", new save());
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set("read", new read());
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set("exists", new exists());
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set("path", new path());
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}
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private int fixIndex(Varargs args) {
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return args != null && args.arg1() instanceof UDFile ? 1 : 0;
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}
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/**
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* 保存文件
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*/
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class save extends VarArgFunction {
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@Override
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public Varargs invoke(Varargs args) {
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final int fixIndex = fixIndex(args);
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if (args.narg() > fixIndex) {
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final LuaResourceFinder finder = getLuaResourceFinder();
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if (finder != null) {
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final LuaValue param1 = args.arg(fixIndex + 1);
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final LuaValue param2 = args.arg(fixIndex + 2);
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String name = null;
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byte[] data = null;
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if (LuaUtil.isString(param1)) {
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name = param1.optjstring(null);
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if (param2 instanceof UDData) {
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data = ((UDData) param2).bytes();
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} else if (param2 instanceof LuaString) {
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data = ((LuaString) param2).m_bytes;
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} else if (param2 instanceof CharSequence) {
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data = param2.toString().getBytes();
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}
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} else if (param1 instanceof UDData) {
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data = ((UDData) param1).bytes();
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name = param2.optjstring(null);
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}
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if (data != null && data.length > 0 && !TextUtils.isEmpty(name)) {
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if (args.isfunction(fixIndex + 3)) {
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final LuaValue callback = LuaUtil.getFunction(args, fixIndex + 3);
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new SimpleTask1<Boolean>() {
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@Override
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protected Boolean doInBackground(Object... params) {
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final String path =
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finder.buildSecurePathInSdcard((String) params[0]);
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return FileUtil.save(path, (byte[]) params[1]);
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}
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@Override
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protected void onPostExecute(Boolean o) {
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LuaUtil.callFunction(callback, o);
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}
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}.executeInPool(name, data);
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} else {
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final String path = finder.buildSecurePathInSdcard(name);
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return valueOf(FileUtil.save(path, data));
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}
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}
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}
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}
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return FALSE;
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}
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}
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/**
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* 读取文件
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*/
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class read extends VarArgFunction {
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@Override
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public Varargs invoke(Varargs args) {
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final int fixIndex = fixIndex(args);
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if (args.narg() > fixIndex) {
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final LuaResourceFinder finder = getLuaResourceFinder();
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if (finder != null) {
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final String name = LuaUtil.getString(args, fixIndex + 1);
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final String path = finder.buildSecurePathInSdcard(name);
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if (args.isfunction(fixIndex + 2)) {
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final LuaValue callback = LuaUtil.getFunction(args, fixIndex + 2);
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if (path != null) {
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new SimpleTask1<UDData>() {
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@Override
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protected UDData doInBackground(Object... params) {
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byte[] data = VenvyFileUtil.readBytes(new File(path));
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if (data != null) {
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return new UDData(getGlobals(), getmetatable(), null).append(data);
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} else { // 外存储卡读取不到的情况下，尝试在assets资源包下读取
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data = VenvyIOUtils.toBytes(VenvyIOUtils.open(App.getContext(),
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name));
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return new UDData(getGlobals(), getmetatable(), null).append(data);
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}
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}
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@Override
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protected void onPostExecute(UDData udData) {
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LuaUtil.callFunction(callback, udData);
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}
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}.executeInPool();
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} else {
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LuaUtil.callFunction(callback, NIL);
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}
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} else {
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if (path != null) {
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byte[] data = VenvyFileUtil.readBytes(new File(path));
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if (data != null) {
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return new UDData(getGlobals(), getmetatable(), null).append(data);
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} else { // 外存储卡读取不到的情况下，尝试在assets资源包下读取
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data = VenvyIOUtils.toBytes(VenvyIOUtils.open(App.getContext(),
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name));
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if (data != null) {
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return new UDData(getGlobals(), getmetatable(), null).append(data);
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} else {
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return NIL;
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}
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}
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} else {
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return NIL;
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}
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}
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}
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}
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return NIL;
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}
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}
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/**
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* 文件是否存在
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*/
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class exists extends VarArgFunction {
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@Override
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public Varargs invoke(Varargs args) {
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final int fixIndex = fixIndex(args);
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if (args.narg() > fixIndex) {
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final String fileName = LuaUtil.getString(args, fixIndex + 1);
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return valueOf(VenvyFileUtil.isExistFile(fileName));
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}
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return valueOf(false);
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}
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}
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/**
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* 获取文件绝对路径
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*/
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class path extends VarArgFunction {
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@Override
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public Varargs invoke(Varargs args) {
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final int fixIndex = fixIndex(args);
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if (args.narg() > fixIndex) {
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final LuaResourceFinder finder = getLuaResourceFinder();
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if (finder != null) {
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final String fileName = LuaUtil.getString(args, fixIndex + 1);
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final String path = finder.buildSecurePathInSdcard(fileName);
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return path != null ? valueOf(path) : NIL;
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}
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}
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return NIL;
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}
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}
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}

‎VideoOS/VenvyLibrary/src/main/java/cn/com/venvy/common/utils/VenvyFileUtil.java‎

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Original file line numberDiff line numberDiff line change
@@ -444,4 +444,19 @@ public static File createFile(final String fullpath) {
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return new File(parent, fileName);
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}
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}
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public static byte[] readBytes(File file) {
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if (file != null && file.exists() && file.isFile()) {
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InputStream inputStream = null;
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try {
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inputStream = new FileInputStream(file);
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return VenvyIOUtils.toBytes(inputStream);
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} finally {
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VenvyIOUtils.close(inputStream);
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}
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}
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return null;
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}
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}

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