Merge pull request #13960 from TimothyZhang/jsb-writeDataToFile

Add jsb.fileUtils.writeDataToFile()

cocos/scripting/js-bindings/manual/cocos2d_specifics.cpp

@@ -4449,6 +4449,41 @@ bool js_cocos2dx_CCFileUtils_getDataFromFile(JSContext *cx, uint32_t argc, jsval
     return false;
 }
 
+bool js_cocos2dx_CCFileUtils_writeDataToFile(JSContext *cx, uint32_t argc, jsval *vp)
+{
+    JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
+    bool ok = true;
+    JS::RootedObject obj(cx, args.thisv().toObjectOrNull());
+    js_proxy_t *proxy = jsb_get_js_proxy(obj);
+    cocos2d::FileUtils* cobj = (cocos2d::FileUtils *)(proxy ? proxy->ptr : NULL);
+    JSB_PRECONDITION2( cobj, cx, false, "js_cocos2dx_CCFileUtils_writeDataToFile : Invalid Native Object");
+    if (argc == 2) {
+        Data arg0;
+        std::string arg1;
+
+        // copy bytes from UInit8Array
+        JSObject &obj0 = args.get(0).toObject();
+        if( JS_IsUint8Array(&obj0) ) {
+            uint32_t len = JS_GetArrayBufferViewByteLength(&obj0);
+            uint8_t* bufdata = (uint8_t*)JS_GetArrayBufferViewData(&obj0);
+            arg0.copy(bufdata, len);
+        } else {
+            ok = false;
+        }
+        
+        ok &= jsval_to_std_string(cx, args.get(1), &arg1);
+        JSB_PRECONDITION2(ok, cx, false, "js_cocos2dx_CCFileUtils_writeDataToFile : Error processing arguments");
+        bool ret = cobj->writeDataToFile(arg0, arg1);
+        jsval jsret = JSVAL_NULL;
+        jsret = BOOLEAN_TO_JSVAL(ret);
+        args.rval().set(jsret);
+        return true;
+    }
+
+    JS_ReportError(cx, "js_cocos2dx_CCFileUtils_writeDataToFile : wrong number of arguments: %d, was expecting %d", argc, 2);
+    return false;
+}
+
 bool js_cocos2dx_CCFileUtils_getSearchResolutionsOrder(JSContext *cx, uint32_t argc, jsval *vp)
 {
     JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
@@ -6257,6 +6292,7 @@ void register_cocos2dx_js_core(JSContext* cx, JS::HandleObject global)
     JS_DefineFunction(cx, tmpObj, "getSearchResolutionsOrder", js_cocos2dx_CCFileUtils_getSearchResolutionsOrder, 0, JSPROP_PERMANENT );
     JS_DefineFunction(cx, tmpObj, "createDictionaryWithContentsOfFile", js_cocos2dx_FileUtils_createDictionaryWithContentsOfFile, 1, JSPROP_ENUMERATE | JSPROP_PERMANENT);
     JS_DefineFunction(cx, tmpObj, "getDataFromFile", js_cocos2dx_CCFileUtils_getDataFromFile, 1, JSPROP_ENUMERATE | JSPROP_PERMANENT);
+    JS_DefineFunction(cx, tmpObj, "writeDataToFile", js_cocos2dx_CCFileUtils_writeDataToFile, 2, JSPROP_ENUMERATE | JSPROP_PERMANENT);
 
     JS_GetProperty(cx, ccObj, "EventListenerTouchOneByOne", &tmpVal);
     tmpObj = tmpVal.toObjectOrNull();

tests/js-tests/src/NativeTest/FileUtils/FileUtilsTest.js

@@ -72,6 +72,71 @@ var fileUtilsBase = BaseTestLayer.extend({
 
 });
 
+var TestWriteData = fileUtilsBase.extend({
+    _title:"fileUtils: TestWriteData(Binary) to files",
+    ctor:function() {
+        this._super();
+
+        var winSize = cc.winSize;
+
+        var writeResult = new cc.LabelTTF("", "Arial", 18);
+        this.addChild(writeResult);
+        writeResult.setPosition(winSize.width / 2, winSize.height * 3 / 4);
+
+        var readResult = new cc.LabelTTF("", "Arial", 18);
+        this.addChild(readResult);
+        readResult.setPosition(winSize.width / 2, winSize.height  / 3);
+
+        var writablePath = jsb.fileUtils.getWritablePath();
+        writablePath += "cocos/fileUtilTest/";
+        var fileName = "writeDataTest.bin";
+        var fullPath = writablePath + fileName;
+
+        // writeTest
+        var writeData = new Uint8Array(8);
+        for(var i = 0; i < writeData.length; i ++) {
+            writeData[i] = i;
+        }
+        jsb.fileUtils.createDirectory(writablePath);
+        if (jsb.fileUtils.writeDataToFile(writeData, fullPath))
+        {
+            log("see the file at %s", fullPath);
+            writeResult.setString("write success:\n" + fullPath);
+        }
+        else
+        {
+            log("write file failed");
+            writeResult.setString("write fail");
+        }
+
+        // readTest
+        var readData = jsb.fileUtils.getDataFromFile(fullPath);
+        if(!readData || typeof readData != typeof writeData) {
+            log("read file failed");
+            readResult.setString("read failed");
+        } else {
+            var match = true;
+            if(readData.length != writeData.length){
+                log("data size not match");
+                match = false;
+            } else {
+                for(var i = 0; i < readData.length; i ++) {
+                    if(readData[i] != writeData[i]) {
+                        log("data not match");
+                        match = false;
+                        break;
+                    }
+                }
+            }
+            if(!match) {
+                readResult.setString("read success, but data not correct");
+            } else {
+                readResult.setString("read test success");
+            }
+        }
+    },
+});
+
 var TestWriteString = fileUtilsBase.extend({
     _title:"fileUtils: TestWriteString to files",
     ctor:function() {
@@ -301,6 +366,7 @@ var TestWriteValueVector = fileUtilsBase.extend({
     },
 });
 var arrayOffileUtils = [
+    TestWriteData,
     TestWriteString,
     TestWriteValueMap,
     TestWriteValueVector