tildefriends/apps/issues/tf-utils.js

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import * as linkify from './commonmark-linkify.js';
function image(node, entering) {
if (node.firstChild?.type === 'text' &&
node.firstChild.literal.startsWith('video:')) {
if (entering) {
this.lit('<video style="max-width: 100%; max-height: 480px" title="' + this.esc(node.firstChild?.literal) + '" controls>');
this.lit('<source src="' + this.esc(node.destination) + '"></source>');
this.disableTags += 1;
} else {
this.disableTags -= 1;
this.lit('</video>');
}
} else if (node.firstChild?.type === 'text' &&
node.firstChild.literal.startsWith('audio:')) {
if (entering) {
this.lit('<audio style="height: 32px; max-width: 100%" title="' + this.esc(node.firstChild?.literal) + '" controls>');
this.lit('<source src="' + this.esc(node.destination) + '"></source>');
this.disableTags += 1;
} else {
this.disableTags -= 1;
this.lit('</audio>');
}
} else {
if (entering) {
if (this.disableTags === 0) {
this.lit('<div class="img_caption">' + this.esc(node.firstChild?.literal || node.destination) + '</div>');
if (this.options.safe && potentiallyUnsafe(node.destination)) {
this.lit('<img src="" alt="');
} else {
this.lit('<img src="' + this.esc(node.destination) + '" alt="');
}
}
this.disableTags += 1;
} else {
this.disableTags -= 1;
if (this.disableTags === 0) {
if (node.title) {
this.lit('" title="' + this.esc(node.title));
}
this.lit('" />');
}
}
}
}
export function markdown(md) {
var reader = new commonmark.Parser({safe: true});
var writer = new commonmark.HtmlRenderer();
writer.image = image;
var parsed = reader.parse(md || '');
parsed = linkify.transform(parsed);
var walker = parsed.walker();
var event, node;
while ((event = walker.next())) {
node = event.node;
if (event.entering) {
if (node.type == 'link') {
if (node.destination.startsWith('@') &&
node.destination.endsWith('.ed25519')) {
node.destination = '#' + node.destination;
} else if (node.destination.startsWith('%') &&
node.destination.endsWith('.sha256')) {
node.destination = '#' + node.destination;
} else if (node.destination.startsWith('&') &&
node.destination.endsWith('.sha256')) {
node.destination = '/' + node.destination + '/view';
}
} else if (node.type == 'image') {
if (node.destination.startsWith('&')) {
node.destination = '/' + node.destination + '/view';
}
}
}
}
return writer.render(parsed);
}
export function human_readable_size(bytes) {
let v = bytes;
let u = 'B';
for (let unit of ['kB', 'MB', 'GB']) {
if (v > 1024) {
v /= 1024;
u = unit;
} else {
break;
}
}
return `${Math.round(v * 10) / 10} ${u}`;
}