65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
/**
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* Copyright 2020 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// @license © 2020 Google LLC. Licensed under the Apache License, Version 2.0.
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/**
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* Saves a file to disk using the File System Access API.
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* @type { typeof import("../../index").fileSave }
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*/
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export default async (
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blob,
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options = {},
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existingHandle = null,
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throwIfExistingHandleNotGood = false
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) => {
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options.fileName = options.fileName || 'Untitled';
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const accept = {};
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if (options.mimeTypes) {
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options.mimeTypes.push(blob.type);
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options.mimeTypes.map((mimeType) => {
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accept[mimeType] = options.extensions || [];
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});
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} else {
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accept[blob.type] = options.extensions || [];
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}
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if (existingHandle) {
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try {
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// Check if the file still exists.
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await existingHandle.getFile();
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} catch (err) {
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existingHandle = null;
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if (throwIfExistingHandleNotGood) {
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throw err;
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}
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}
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}
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const handle =
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existingHandle ||
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(await window.showSaveFilePicker({
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suggestedName: options.fileName,
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types: [
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{
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description: options.description || '',
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accept: accept,
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},
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],
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}));
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const writable = await handle.createWritable();
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await writable.write(blob);
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await writable.close();
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return handle;
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};
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