kopia lustrzana https://github.com/Tldraw/Tldraw
89 wiersze
2.7 KiB
JavaScript
89 wiersze
2.7 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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blobOrResponse,
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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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if (!Array.isArray(options)) {
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options = [options]
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}
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options[0].fileName = options[0].fileName || 'Untitled'
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const types = []
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options.forEach((option, i) => {
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types[i] = {
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description: option.description || '',
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accept: {},
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}
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if (option.mimeTypes) {
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if (i === 0) {
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if (blobOrResponse.type) {
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option.mimeTypes.push(blobOrResponse.type)
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} else if (blobOrResponse.headers && blobOrResponse.headers.get('content-type')) {
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option.mimeTypes.push(blobOrResponse.headers.get('content-type'))
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}
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}
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option.mimeTypes.map((mimeType) => {
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types[i].accept[mimeType] = option.extensions || []
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})
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} else if (blobOrResponse.type) {
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types[i].accept[blobOrResponse.type] = option.extensions || []
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}
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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[0].fileName,
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id: options[0].id,
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startIn: options[0].startIn,
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types,
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excludeAcceptAllOption: options[0].excludeAcceptAllOption || false,
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}))
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const writable = await handle.createWritable()
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// Use streaming on the `Blob` if the browser supports it.
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if ('stream' in blobOrResponse) {
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const stream = blobOrResponse.stream()
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await stream.pipeTo(writable)
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return handle
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// Handle passed `ReadableStream`.
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} else if ('body' in blobOrResponse) {
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await blobOrResponse.body.pipeTo(writable)
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return handle
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}
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// Default case of `Blob` passed and `Blob.stream()` not supported.
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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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