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viewer.html
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viewer.html
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<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>nbviewer.js</title>
<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/prism/1.5.1/themes/prism.min.css'/>
<script defer src='https://cdnjs.cloudflare.com/ajax/libs/marked/0.3.6/marked.min.js'></script>
<script defer src='https://cdnjs.cloudflare.com/ajax/libs/prism/1.5.1/prism.min.js' data-manual></script>
<script defer src='https://cdnjs.cloudflare.com/ajax/libs/prism/1.5.1/components/prism-python.min.js' data-manual></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/katex.min.css" integrity="sha384-zB1R0rpPzHqg7Kpt0Aljp8JPLqbXI3bhnPWROx27a9N0Ll6ZP/+DiW/UqRcLbRjq" crossorigin="anonymous">
<script defer src="https://cdn.jsdelivr.net/npm/[email protected]/dist/katex.min.js" integrity="sha384-y23I5Q6l+B6vatafAwxRu/0oK/79VlbSz7Q9aiSZUvyWYIYsd+qj+o24G5ZU2zJz" crossorigin="anonymous"></script>
<script defer src='lib/nbv.js'></script>
<style type='text/css'>
body {
font: 0.8em Arial, sans-serif;
background-color: #eee;
}
div#instructions {
max-width: 960px;
font-size: 2em;
color: #aaa;
text-align: center;
padding-top: 10%;
margin: 0 auto;
}
div#instructions small {
font-size: .7em;
}
div#dropzone {
position: fixed;
top: 0; left: 0;
width: 100%; height: 100%;
z-index: 1000;
background-color: #7d7;
opacity: 0;
transition: visibility 500ms, opacity 500ms;
}
select#file-selector {
display: none;
/*display: block;*/
font-size: 2em;
margin: 0 auto;
}
button#download-notebook {
display: none;
margin: 1em auto 0 auto;
}
input#github-link {
font-size: 1em;
text-align: center;
width: 60%;
}
input#github-link::placeholder {
color: #ccc;
}
div#serving-info {
font-size: 1.2em;
font-style: italic;
margin-top: 1em;
text-align: center;
}
</style>
</head>
<body>
<a href="https://github.com/kokes/nbviewer.js"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://camo.githubusercontent.com/a6677b08c955af8400f44c6298f40e7d19cc5b2d/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f677261795f3664366436642e706e67" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_gray_6d6d6d.png"></a>
<div id='doc'>
<select id='file-selector'></select>
<button id='download-notebook'>Download this notebook in HTML</button>
<div id='instructions'>Drag and drop Jupyter notebooks anywhere here...<br />
or paste a link from Github: <br />
<input id='github-link' placeholder='https://github.com/...'/>
</div>
<div id='serving-info'></div>
</div>
<script type='text/javascript'>
var d = document
var doc = d.getElementById('doc')
var dn = d.getElementById('download-notebook')
dn.addEventListener('click', function() {
var nbs = d.querySelectorAll('div.rendered-notebook')
for (var j=0; j<nbs.length; j++) {
if (nbs[j].style.display == 'none') continue
var link = d.createElement('a')
var content = encodeURIComponent(nbs[j].innerHTML)
var filename = nbs[j].getAttribute('rel').replace('.ipynb', '.html')
link.setAttribute('href', 'data:text/plain;charset=utf-8,' + content)
link.setAttribute('download', filename)
d.body.appendChild(link)
link.click()
d.body.removeChild(link)
break
}
})
var fs = d.getElementById('file-selector')
fs.addEventListener('change', function() {
var nbs = d.querySelectorAll('div.rendered-notebook')
for (var j=0; j<nbs.length; j++) {
if (nbs[j].getAttribute('rel') == fs.value) {
nbs[j].style.display = 'block'
continue
}
nbs[j].style.display = 'none'
}
})
var dz = d.createElement('div')
dz.style.visibility = 'hidden'
dz.setAttribute('id', 'dropzone')
d.getElementsByTagName('body')[0].appendChild(dz)
// we need a separate listener for the windows,
// to enable the dropzone
// otherwise it'd 'hijack' all clicks and everything
window.addEventListener('dragenter', function(e) {
dz.style.opacity = .3;
dz.style.visibility = ''
})
dz.addEventListener('dragenter', dzenter, false);
dz.addEventListener('dragover', dzover, false);
dz.addEventListener('drop', dzdrop, false);
function dzenter(e) {
e.stopPropagation()
e.preventDefault()
}
function dzover(e) {
e.stopPropagation()
e.preventDefault()
}
function dzdrop(e) {
dz.style.opacity = 0
dz.style.visibility = 'hidden'
e.stopPropagation()
e.preventDefault()
var fns = e.dataTransfer.files
renderFiles(fns)
}
function renderFiles(fns) {
d.getElementById('instructions').style.display = 'none'
fs.style.display = 'block'
dn.style.display = 'block'
for (var j=0; j<fns.length; j++) {
var fn = fns[j]
if (!fn.name.endsWith('.ipynb')) {
console.log('File ' + fn.name + ' not a Jupyter notebook, skipping')
continue
}
var rd = new FileReader()
rd.addEventListener('load', (function (j, rd, fn) {
return function() {
var dt = JSON.parse(rd.result)
// Does a container for this file exist already?
// If not, create it
var tg = doc.querySelector('div[rel="' + fn.name + '"]')
if (tg === null) {
tg = d.createElement('div')
tg.setAttribute('class', 'rendered-notebook')
tg.setAttribute('rel', fn.name)
doc.appendChild(tg)
}
// hide rendered notebook iff
// 1) it's the first one loaded, or
// 2) it's the same one as already showed (refresh)
if (!(fs.getElementsByTagName('option').length == 0 ||
fs.value == fn.name))
tg.style.display = 'none'
// populate the <select>
if (fs.querySelector('option[value="' + fn.name + '"]') === null) {
var op = d.createElement('option')
op.textContent = fn.name
fs.appendChild(op)
}
nbv.render(dt, tg)
}
})(j, rd, fn))
rd.readAsText(fn)
}
}
// github rendering shenanigans
var ghl = document.getElementById('github-link')
ghl.addEventListener('keyup', (x) => {
// TODO: verify the link via regexp or something
// and change the input's css accordingly (red border)
window.location.hash = btoa(ghl.value);
render_gh_files()
})
// what if we loaded a site with a hash already
if (window.location.hash.length > 1) {
ghl.value = atob(window.location.hash.slice(1))
var event = new CustomEvent('keyup')
ghl.dispatchEvent(event)
}
// `atob` won't decode utf8 characters correctly, we need to do more about this
// taken from this excellent answer https://stackoverflow.com/a/30106551
function b64DecodeUnicode(str) {
return decodeURIComponent(atob(str).split('').map(function(c) {
return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
}).join(''));
}
async function render_gh_files() {
console.log('rendering')
var hs = window.location.hash.slice(1); // without '#'
var hsurl = atob(hs); // base64 -> text
// extract relevant bits from the URL and create a URL for the Github API
var ghparts = new RegExp(/https:\/\/github.com\/(.+?)\/(.+?)\/blob\/(.+?)\/(.+\.ipynb)/)
var m = hsurl.match(ghparts)
if (!m) {
// TODO: render some place
console.error('invalid URL ' + hsurl)
return
}
var api_url = `https://api.github.com/repos/${m[1]}/${m[2]}/contents/${m[4]}?ref=${m[3]}`
var filename = m[4].split('/').pop()
console.log(`translated ${hsurl} into ${api_url}, fetching`)
var dd = await fetch(api_url) // TODO: this could fail on API limits
var ddj = await dd.json()
var dt = JSON.parse(b64DecodeUnicode(ddj.content)) // decode incoming data
gg = dt;
d.getElementById('instructions').style.display = 'none'
tg = d.createElement('div')
tg.setAttribute('class', 'rendered-notebook')
tg.setAttribute('rel', hsurl)
doc.appendChild(tg)
nbv.render(dt, tg)
document.getElementById('download-notebook').style.display = 'block'
document.getElementById('serving-info').innerHTML = `Serving <code>${decodeURI(filename)}</code>. <a href='${window.location}'>Permanent link to this render</a> / <a href='${hsurl}'>original Github source</a>, <a href='${api_url}'>API source data</a>`;
// return;
}
</script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-98368126-1', 'auto');
ga('send', 'pageview');
</script>
</body>
</html>