nixos-config/modules/nginx-interactive-index/listing.js

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// SPDX-FileCopyrightText: 2021-2024 Simon Bruder <simon@sbruder.de>
//
// SPDX-License-Identifier: AGPL-3.0-or-later
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document.addEventListener('DOMContentLoaded', () => {
function humanFileSize(size) {
if (size === 0) {
return "0B";
}
if (size < 0) {
return null;
}
const base = Math.floor(Math.log2(size) / 10)
const unit = ["B", "KiB", "MiB", "GiB", "TiB"][base]
const relative = size / 2**(10*base)
return relative.toFixed(3) + "" + unit
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}
function textToA(line) {
let outerElement = document.createElement('div')
outerElement.innerHTML = line
return outerElement.getElementsByTagName('a')[0]
}
function parseLine(line) {
const href = textToA(line).href
const filename = href.substr(-1) === '/' ? decodeURIComponent(href.split('/').slice(-2, -1)[0]) : decodeURIComponent(href.split('/').pop())
const size = line.split(' ').pop()
return {
href: href,
filename: filename,
size: size
}
}
function processLine(line) {
meta = parseLine(line)
return `<tr><td><a href="${meta.href}">${meta.filename}</a></td><td>${meta.size === '-' ? '-' : humanFileSize(meta.size)}</td></tr>`
}
function addZebraStripes(rows) {
// this should be done in CSS, but AFAIU it does not support limiting
// :nth-child to elements matching a previous :not selector
rows.forEach((row, idx) => {
if (idx % 2 === 0) {
row.classList.add("zebra-stripe")
} else {
row.classList.remove("zebra-stripe")
}
})
}
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const collator = new Intl.Collator('kn', {numeric: true})
// transform plain text to table
document.querySelector('pre').outerHTML = '<table><thead><tr><th>Name</th><th>Size</th></tr></thead><tbody><tr><td><a href="..">..</a></td><td>-</td></tr>' + document.querySelector('pre').innerHTML
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.split('\n')
.filter(line => line !== '')
.filter(line => line !== '<a href="../">../</a>')
.map(processLine)
.sort(collator.compare)
.join('\n') + '</tbody></table>'
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let searchField = document.createElement('input')
searchField.id = 'search-field'
searchField.autofocus = true
document.querySelector('body').insertBefore(searchField, document.querySelector('table'))
const rows = Array.from(document.querySelectorAll('tbody tr'))
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addZebraStripes(rows)
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document.querySelector('#search-field').addEventListener("input", e => {
const searchValue = e.target.value.toLowerCase()
rows.forEach(row => {
const file = row.querySelector('td:nth-child(1) a').innerText
if (!file.toLowerCase().includes(searchValue)) {
row.classList.add("hidden")
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} else {
row.classList.remove("hidden")
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}
})
const visibleRows = rows.filter(row => !row.classList.contains("hidden"))
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if (visibleRows.length === 1) {
const target = visibleRows[0].querySelector('td a').href
if (target.substr(-1) === '/') {
window.location = target
}
}
addZebraStripes(visibleRows)
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})
})