mirror of
https://github.com/protomaps/PMTiles.git
synced 2026-02-04 10:51:07 +00:00
53 lines
2.2 KiB
HTML
53 lines
2.2 KiB
HTML
<html>
|
|
<head>
|
|
</head>
|
|
<head>
|
|
<meta charset="utf-8" />
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
<script src="https://d3js.org/d3.v7.min.js"></script>
|
|
<script src="https://unpkg.com/pmtiles@latest/index.js"></script>
|
|
<!-- <script src="../js/index.js"></script> -->
|
|
<title>PMTiles inspector</title>
|
|
<style>
|
|
#drop_zone {
|
|
border: 5px solid blue;
|
|
width: 200px;
|
|
height: 100px;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div id="drop_zone" ondrop="dropHandler(event);" ondragover="dragOverHandler(event);">
|
|
<p>Drag a PMTiles file into this Drop Zone...</p>
|
|
</div>
|
|
<div id="header"></div>
|
|
<div id="metadata"></div>
|
|
<div id="root_entries"></div>
|
|
</body>
|
|
<script>
|
|
function dropHandler(ev) {
|
|
ev.preventDefault();
|
|
var data = ev.dataTransfer.items;
|
|
var file = data[0].getAsFile();
|
|
var blob = file.slice(0,512000);
|
|
blob.arrayBuffer().then(a => {
|
|
var header = pmtiles.parseHeader(new DataView(a,0,10));
|
|
let dec = new TextDecoder("utf-8")
|
|
let metadata = dec.decode(new DataView(a,10,header.json_size));
|
|
d3.select("#header").text(`pmtiles spec version: ${header.version} metadata len: ${header.json_size} root entries: ${header.root_entries}`)
|
|
d3.select("#metadata").text(metadata)
|
|
var entries_view = new DataView(a,10+header.json_size,17*header.root_entries);
|
|
let entries = []
|
|
for (var i = 0; i < entries_view.byteLength; i+=17) {
|
|
var [z,x,y,offset,length,is_dir] = pmtiles.parseEntry(entries_view,i);
|
|
entries.push({z:z,x:x,y:y,offset:offset,length:length,is_dir:is_dir})
|
|
}
|
|
let row = d3.select("#root_entries").selectAll("div").data(entries).enter().append("div")
|
|
row.text(d => { return `${d.z} ${d.x} ${d.y}` })
|
|
})
|
|
}
|
|
function dragOverHandler(ev) {
|
|
ev.preventDefault();
|
|
}
|
|
</script>
|
|
</html> |