marcel/excalidraw
1
0
Fork 0
mirror of https://github.com/excalidraw/excalidraw.git synced 2025-11-18 11:44:23 +01:00
Code Issues Packages Projects Releases Wiki Activity

feat: make file handling more robust (#5057)

Browse Source
This commit is contained in:
David Luzar
2022-05-09 15:53:04 +02:00
committed by GitHub
parent 0d70690ec8
commit d2e687ed0a
11 changed files with 328 additions and 152 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/data/image.ts
View File

@@ -3,28 +3,12 @@ import tEXt from "png-chunk-text";
import encodePng from "png-chunks-encode";
import { stringToBase64, encode, decode, base64ToString } from "./encode";
import { EXPORT_DATA_TYPES, MIME_TYPES } from "../constants";
import { blobToArrayBuffer } from "./blob";
// -----------------------------------------------------------------------------
// PNG
// -----------------------------------------------------------------------------
const blobToArrayBuffer = (blob: Blob): Promise<ArrayBuffer> => {
if ("arrayBuffer" in blob) {
return blob.arrayBuffer();
}
// Safari
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = (event) => {
if (!event.target?.result) {
return reject(new Error("couldn't convert blob to ArrayBuffer"));
}
resolve(event.target.result as ArrayBuffer);
};
reader.readAsArrayBuffer(blob);
});
};
export const getTEXtChunk = async (
blob: Blob,
): Promise<{ keyword: string; text: string } | null> => {