Initial OpenECOMP SDC commit

[sdc.git] / catalog-ui / app / scripts / utils / file-utils.ts

diff --git a/catalog-ui/app/scripts/utils/file-utils.ts b/catalog-ui/app/scripts/utils/file-utils.ts
new file mode 100644 (file)
index 0000000..db6251f
--- /dev/null
+++ b/catalog-ui/app/scripts/utils/file-utils.ts
@@ -0,0 +1,73 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+/// <reference path="../references"/>
+module Sdc.Utils {
+    export class FileUtils {
+
+        static '$inject' = [
+            '$window'
+        ];
+
+        constructor(private $window: any) {
+        }
+
+        public byteCharactersToBlob = (byteCharacters, contentType): any => {
+            contentType = contentType || '';
+            let sliceSize = 1024;
+            let bytesLength = byteCharacters.length;
+            let slicesCount = Math.ceil(bytesLength / sliceSize);
+            let byteArrays = new Array(slicesCount);
+
+            for (let sliceIndex = 0; sliceIndex < slicesCount; ++sliceIndex) {
+                let begin = sliceIndex * sliceSize;
+                let end = Math.min(begin + sliceSize, bytesLength);
+
+                let bytes = new Array(end - begin);
+                for (let offset = begin, i = 0; offset < end; ++i, ++offset) {
+                    bytes[i] = byteCharacters[offset].charCodeAt(0);
+                }
+                byteArrays[sliceIndex] = new Uint8Array(bytes);
+            }
+            return new Blob(byteArrays, {type: contentType});
+        };
+
+        public base64toBlob = (base64Data, contentType): any => {
+            let byteCharacters = atob(base64Data);
+            return this.byteCharactersToBlob(byteCharacters, contentType);
+        };
+
+        public downloadFile = (blob, fileName): void=> {
+            let url = this.$window.URL.createObjectURL(blob);
+            let downloadLink = document.createElement("a");
+
+            downloadLink.setAttribute('href', url);
+            downloadLink.setAttribute('download', fileName);
+            document.body.appendChild(downloadLink);
+            downloadLink.click();
+
+            //time out for firefox
+            setTimeout(()=> {
+                document.body.removeChild(downloadLink);
+                this.$window.URL.revokeObjectURL(url);
+            }, 100);
+        }
+
+    }
+}