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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | 3x 3x 3x 5x 2x 2x 3x 3x 3x 3x 3x 3x 5x 5x 5x 3x 2x 5x 5x 5x 2x 2x 2x 2x | export type OnFileCallback = (file: File, path: string) => Promise<void>;
export async function traverseDirectoryTreeWrapper(
fileList: DataTransferItemList,
onFileCallback: OnFileCallback,
) {
for (const dtItem of fileList) {
Eif (dtItem) {
await traverseDirectoryTree(dtItem.webkitGetAsEntry(), onFileCallback);
}
}
}
async function traverseDirectoryTree(
item: FileSystemEntry | null,
onFileCallback: OnFileCallback,
path: string = '',
) {
if (item?.isFile) {
const fileItem = item as FileSystemFileEntry;
await getFileEntriesFromReader(fileItem, onFileCallback, path);
E} else if (item?.isDirectory) {
const directoryItem = item as FileSystemDirectoryEntry;
const directoryReader = directoryItem.createReader();
let entries: Array<FileSystemEntry> = [];
let lastAdditions = 0;
do {
const entrySet = await getDirectoryEntriesFromReader(directoryReader);
lastAdditions = entrySet.length;
entries = entries.concat(entrySet);
} while (lastAdditions > 0);
for (const element of entries) {
await traverseDirectoryTree(
element,
onFileCallback,
path + directoryItem.name + '/',
);
}
}
}
async function getDirectoryEntriesFromReader(
directoryReader: FileSystemDirectoryReader,
): Promise<Array<FileSystemEntry>> {
return await new Promise((resolve, reject) => {
directoryReader.readEntries((entries: Array<FileSystemEntry>) => {
resolve(entries);
}, reject);
});
}
async function getFileEntriesFromReader(
item: FileSystemFileEntry,
onFileCallback: OnFileCallback,
path: string,
) {
return await new Promise<void>((resolve, _reject) => {
item.file(async (file: File) => {
await onFileCallback(file, path);
resolve();
});
});
}
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