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joplin/packages/renderer/headerAnchor.ts

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// eslint-disable-next-line @typescript-eslint/no-explicit-any -- Old code before rule was applied
export default function(markdownIt: any) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any -- Old code before rule was applied
markdownIt.core.ruler.push('anchorHeader', (state: any): boolean => {
const tokens = state.tokens;
const Token = state.Token;
const doneNames = [];
const headingTextToAnchorName = (text: string, doneNames: string[]) => {
const allowed = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
let lastWasDash = true;
let output = '';
for (let i = 0; i < text.length; i++) {
const c = text[i];
if (allowed.indexOf(c) < 0) {
if (lastWasDash) continue;
lastWasDash = true;
output += '-';
} else {
lastWasDash = false;
output += c;
}
}
output = output.toLowerCase();
while (output.length && output[output.length - 1] === '-') {
output = output.substr(0, output.length - 1);
}
let temp = output;
let index = 1;
while (doneNames.indexOf(temp) >= 0) {
temp = `${output}-${index}`;
index++;
}
output = temp;
return output;
};
const createAnchorTokens = (anchorName: string) => {
const output = [];
{
const token = new Token('heading_anchor_open', 'a', 1);
token.attrs = [
['name', anchorName],
['href', `#${anchorName}`],
['class', 'heading-anchor'],
];
output.push(token);
}
{
const token = new Token('text', '', 0);
token.content = '🔗';
output.push(token);
}
{
const token = new Token('heading_anchor_close', 'a', -1);
output.push(token);
}
return output;
};
let insideHeading = false;
for (let i = 0; i < tokens.length; i++) {
const token = tokens[i];
if (token.type === 'heading_open') {
insideHeading = true;
continue;
}
if (token.type === 'heading_close') {
insideHeading = false;
continue;
}
if (insideHeading && token.type === 'inline') {
const anchorName = headingTextToAnchorName(token.content, doneNames);
doneNames.push(anchorName);
const anchorTokens = createAnchorTokens(anchorName);
// token.children = anchorTokens.concat(token.children);
token.children = token.children.concat(anchorTokens);
}
}
return true;
});
}