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fix(base64-file-converter): fix downloading of index.html content without data preambula

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This commit is contained in:
akharlov 2023-11-13 11:46:56 +05:00
parent ca43a25569
commit f7f6f5d77f
1 changed files with 10 additions and 9 deletions
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19
src/composable/downloadBase64.ts
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@ -1,15 +1,13 @@
import { extension as getExtensionFromMime } from 'mime-types';
import type { Ref } from 'vue';
function getFileExtensionFromBase64({
base64String,
function getFileExtensionFromMime({
hasMimeType,
defaultExtension = 'txt',
}: {
base64String: string
hasMimeType: string[] | null
defaultExtension?: string
}) {
const hasMimeType = base64String.match(/data:(.*?);base64/i);
if (hasMimeType) {
return getExtensionFromMime(hasMimeType[1]) || defaultExtension;
}
@ -20,13 +18,16 @@ function getFileExtensionFromBase64({
export function useDownloadFileFromBase64({ source, filename }: { source: Ref<string>; filename?: string }) {
return {
download() {
const base64String = source.value;
if (base64String === '') {
if (source.value === '') {
throw new Error('Base64 string is empty');
}
const cleanFileName = filename ?? `file.${getFileExtensionFromBase64({ base64String })}`;
const hasMimeType = source.value.match(/data:(.*?);base64/i);
const base64String = hasMimeType
? source.value
: `data:text/plain;base64,${source.value}`;
const cleanFileName = filename ?? `file.${getFileExtensionFromMime({ hasMimeType })}`;
const a = document.createElement('a');
a.href = base64String;