uweb/searchurl/txt/markdeep.html~
2021-11-06 19:30:23 +08:00

54 lines
1.5 KiB
HTML

<head>
<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
<script>
function absFile(url) {
this.name=url;
this.slice = async(offset, length) =>{
const headers = new Headers();
headers.append('range', 'bytes=' + offset + '-' + ( offset + length -1).toString());
const opts = {
credentials: 'include',
headers : headers
};
const resp = await fetch( this.name, opts );
return await resp.arrayBuffer();
//alert(JSON.stringify(resp.headers));
//return await resp.text();
}
}
var url;
var page = 1;
var blocksize = 1024;
var extrasize = 2048;
var file;
function loadSlice(){
let lhash = location.hash;
if(lhash)
page = parseInt(lhash.substring(6),10);
file.slice(blocksize*(page-1),blocksize+extrasize).then((buffer)=>{
let u8 = new Uint8Array(buffer);
let iStart = 0;
if(1!=page){
while(10!=u8[iStart]) iStart++;
}
let iEnd = u8.indexOf(10,blocksize);//fine newline(10)
if(-1==iEnd) iEnd = blocksize;
iEnd++;
document.body.innerHTML = marked(new TextDecoder().decode(u8.slice(iStart,iEnd)));
});
}
window.addEventListener('hashchange',loadSlice);
</script>
</head>
<body>
<script>
//?url=#page=
file = new absFile(location.search.substring(5));
//let viewElement = document.querySelector("#viewer");
loadSlice();
</script>
<body>