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Upload code block in case of incompatible backtick

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Cadence Ember 2024-02-19 17:05:56 +13:00
parent 16f9c81097
commit 77b7772062
2 changed files with 119 additions and 22 deletions
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49
m2d/converters/event-to-message.js
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@ -181,7 +181,7 @@ turndownService.addRule("fencedCodeBlock", {
const className = node.firstChild.getAttribute("class") || ""
const language = (className.match(/language-(\S+)/) || [null, ""])[1]
const code = node.firstChild
const visibleCode = code.childNodes.map(c => c.nodeName === "BR" ? "\n" : c.textContent).join("").replace(/\n*$/g, "")
const visibleCode = getCodeContent(code)
var fence = "```"
@ -193,6 +193,11 @@ turndownService.addRule("fencedCodeBlock", {
}
})
/** @param {{ childNodes: Node[]; }} preCode the <code> directly inside the <pre> */
function getCodeContent(preCode) {
return preCode.childNodes.map(c => c.nodeName === "BR" ? "\n" : c.textContent).join("").replace(/\n*$/g, "")
}
/**
* @param {string | null} mxcUrl
* @param {string | null} nameForGuess without colons
@ -308,7 +313,7 @@ async function uploadEndOfMessageSpriteSheet(content, attachments, pendingFiles)
const buffer = await emojiSheet.compositeMatrixEmojis(endOfMessageEmojis)
// Attach it
const name = "emojis.png"
attachments.push({id: "0", name})
attachments.push({id: String(attachments.length), name})
pendingFiles.push({name, buffer})
return content
}
@ -393,6 +398,16 @@ async function checkWrittenMentions(content, guild, di) {
}
}
/**
* @param {Element} node
* @param {string[]} tagNames allcaps tag names
* @returns {any | undefined} the node you were checking for, or undefined
*/
function nodeIsChildOf(node, tagNames) {
// @ts-ignore
for (; node; node = node.parentNode) if (tagNames.includes(node.tagName)) return node
}
const attachmentEmojis = new Map([
["m.image", "🖼️"],
["m.video", "🎞️"],
@ -651,19 +666,37 @@ async function eventToMessage(event, guild, di) {
const root = doc.getElementById("turndown-root");
async function forEachNode(node) {
for (; node; node = node.nextSibling) {
if (node.nodeType === 3 && node.nodeValue.includes("@")) {
// Check written mentions
if (node.nodeType === 3 && node.nodeValue.includes("@") && !nodeIsChildOf(node, ["A", "CODE", "PRE"])) {
const result = await checkWrittenMentions(node.nodeValue, guild, di)
if (result) {
node.nodeValue = result.content
ensureJoined.push(result.ensureJoined)
}
}
if (node.nodeType === 1 && ["CODE", "PRE", "A"].includes(node.tagName)) {
// don't recurse into code or links
} else {
// do recurse into everything else
await forEachNode(node.firstChild)
// Check for incompatible backticks in code blocks
let preNode
if (node.nodeType === 3 && node.nodeValue.includes("```") && (preNode = nodeIsChildOf(node, ["PRE"]))) {
if (preNode.firstChild?.nodeName === "CODE") {
const ext = (preNode.firstChild.className.match(/language-(\S+)/) || [null, "txt"])[1]
const filename = `inline_code.${ext}`
// Build the replacement <code> node
const replacementCode = doc.createElement("code")
replacementCode.textContent = `[${filename}]`
// Build its containing <span> node
const replacement = doc.createElement("span")
replacement.appendChild(doc.createTextNode(" "))
replacement.appendChild(replacementCode)
replacement.appendChild(doc.createTextNode(" "))
// Replace the code block with the <span>
preNode.replaceWith(replacement)
// Upload the code as an attachment
const content = getCodeContent(preNode.firstChild)
attachments.push({id: String(attachments.length), filename})
pendingFiles.push({name: filename, buffer: Buffer.from(content, "utf8")})
}
}
await forEachNode(node.firstChild)
}
}
await forEachNode(root)