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more checking for undefined objects, fixed bug casuing markdown renderer to entirely crash

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This commit is contained in:
Michael Lively
2022-07-28 11:53:51 -07:00
parent 4017fd126f
commit 6fbee10cc1
1 changed files with 12 additions and 4 deletions
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16
extensions/ipynb/src/cellAttachmentRenderer.ts
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@@ -22,11 +22,19 @@ export async function activate(ctx: RendererContext<void>) {
md.renderer.rules.image = (tokens: MarkdownItToken[], idx: number, options, env, self) => {
const token = tokens[idx];
const src = token.attrGet('src');
const attachments: Record<string, Record<string, string>> = env.outputItem.metadata?.custom?.attachments;
const attachments: Record<string, Record<string, string>> = env.outputItem.metadata?.custom?.attachments; // this stores attachment entries for every image in the cell
if (attachments && src) {
const [attachmentKey, attachmentVal] = Object.entries(attachments[src.replace('attachment:', '')])[0];
const b64Markdown = 'data:' + attachmentKey + ';base64,' + attachmentVal;
token.attrSet('src', b64Markdown);
const imageAttachment = attachments[src.replace('attachment:', '')];
if (imageAttachment) {
// objEntries will always be length 1, with objEntries[0] holding [0]=mime,[1]=b64
// if length = 0, something is wrong with the attachment, mime/b64 weren't copied over
const objEntries = Object.entries(imageAttachment);
if (objEntries.length) {
const [attachmentKey, attachmentVal] = objEntries[0];
const b64Markdown = 'data:' + attachmentKey + ';base64,' + attachmentVal;
token.attrSet('src', b64Markdown);
}
}
}
if (original) {