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<!DOCTYPE html>
<html>
<head>
<script>
var lastMsg, allowed=false, dir=null, noThumbs=null;
var locStor = {};
function go() {
console.log("deviceStorage");
var free = false;
window.addEventListener("message", onMessage,false);
var idb = { req: window["indexedDB"].open("deviceStorage") };
idb.req["onupgradeneeded"] = function(e) {
//console.log("onupgradeneeded");
var db = e.target.result;
var os = db["createObjectStore"]("rsrc", { "keyPath": "k" });
}
idb.req["onsuccess"] = function(e) {
var db = locStor.db = e.target.result; //console.log(db);
var os = db["transaction"](["rsrc"], "readwrite")["objectStore"]("rsrc");
var req = os["get"]("fs0");
req["onsuccess"] = function(e) {
if(e.target.result) {
if(localStorage.getItem("forget")=="1") {
localStorage.removeItem("forget");
}
else {
locStor.fset = e.target.result["fset"];
//console.log(locStor.fset);
dir = locStor.fset;
}
//allowed=true; send("ready",true);
}
};
}
allowed=false; send("ready",false);
//allowed = free;
}
async function makeFolder(path) {
path = __getPath(path); //console.log(path);
var fld = dir; for(var i=0; i<path.length-1; i++) fld = await fld.getDirectoryHandle(path[i]);
var dirHandle = await fld.getDirectoryHandle(path[path.length-1], { create: true });
send("0","");
}
async function deleteFile(path) {
path = __getPath(path); //console.log(path);
var fld = dir; for(var i=0; i<path.length-1; i++) fld = await fld.getDirectoryHandle(path[i]);
await fld.removeEntry(path[path.length-1], { recursive: true });
send("0","");
}
async function saveFile (path, buff) {
path = __getPath(path); //console.log(path);
var fld = dir; for(var i=0; i<path.length-1; i++) fld = await fld.getDirectoryHandle(path[i]);
var han = await fld.getFileHandle(path[path.length-1],{create:true});
var wrt = await han.createWritable();//;.then(function(e) {e.write(buff); return e;}).then(function(e) {e.close()});
await wrt.write(buff);
await wrt.close();
send("0","");
}
async function printFile(path) {
path = __getPath(path); //console.log(path);
var fld = dir; for(var i=0; i<path.length-1; i++) fld = await fld.getDirectoryHandle(path[i]);
var han = await fld.getFileHandle(path[path.length-1]);
var fil = await han.getFile();
var buf = await fil.arrayBuffer();
window.parent.postMessage(buf,"*");
}
var fmap,left,fls, gtime, timg;
async function printFolder(path) {
path = __getPath(path); //console.log(path);
var fld = dir; for(var i=0; i<path.length; i++) fld = await fld.getDirectoryHandle(path[i]);
fls = []; fmap={}; left=0; timg=0; gtime=Date.now();
var time = Date.now(), cnt=0, gotFile=false;
for await (var entry of fld.values()) {
var file = [entry.name,-1]; fls.push(file);
//if(entry.kind=="file--") { file[1]=100; file.push(0); }
if(entry.kind=="file") {
gotFile=true;
fmap[entry.name]=fls.length-1; left++;
entry.getFile().then(fileLoaded);
//var fil = await entry.getFile(); makeFile(fil, file);
}
}
if(!gotFile) send("0",fls);
}
async function fileLoaded(fil) {
file = fls[fmap[fil.name]];
await makeFile(fil,file); left--;
if(left==0) {
console.log(Date.now()-gtime, timg);
send("0",fls);
}
}
async function makeFile(fil, file) {
var np = fil.name.split("."), ext = (np.length==1 ? "" : np.pop()).toLowerCase();
file[1]=fil.size;
file.push(~~(fil.lastModified/1000)); //return;
if(ext=="jpeg") ext="jpg";
if(ext=="tiff") ext="tif";
if(["dng","cr2","nef","arw","3fr","fff","gpr"].indexOf(ext)!=-1) ext="tif";
if(noThumbs) ext="---";
var thmb=null;
if(thmb==null && (ext=="jpg" || ext=="tif")) { // || ext=="--psd"
var lim = 130000;
var buf = await fil.slice(0,(lim*1.5>fil.size) ? fil.size : lim).arrayBuffer();
if(ext=="jpg" && buf.byteLength==fil.size) thmb = bufToUrl(buf, "jpg");
else thmb=findJPG(fil.name,buf);
}
//*
if(thmb==null && (ext=="psd" || ext=="psb")) {
var buf = await fil.slice(0,4096).arrayBuffer();
buf = new Uint8Array(buf); //console.log(buf);
var off = 26;
var clen = readUint(buf,off); off+=4; //console.log(clen);
off+=clen;
var rlen = readUint(buf,off); off+=4; //console.log(rlen);
if(off+rlen<=4096) buf=buf.slice(off,off+rlen);
else buf = new Uint8Array(await fil.slice(off,off+rlen).arrayBuffer());
off = 0;
while(off<buf.length) {
var sign = readASCII(buf,off,4); off+=4;
var resID = readUshort(buf,off); off+=2;
var sz = buf[off];
off+=sz+(1-(sz&1))+1;
var asiz = readUint(buf,off); off+=4;
if(resID==1036) {
//console.log(off, rlen);
var tsz = readUint(buf,off+20);
var io = off+28; //console.log(buf.slice(io,io+tsz));
thmb = bufToUrl(buf.slice(io,io+tsz).buffer,"jpg");
break;
}
off+=asiz+(asiz&1);
}
}//*/
if(thmb==null && fil.size<100000 && ["png","svg","bmp","gif","webp"].indexOf(ext)!=-1) {
var buf = await fil.arrayBuffer();
if(ext=="png") {
var data=new Uint8Array(buf), off=16;
var bf = new Uint8Array(4), dim=[];
for(var i=0; i<2; i++) {
for(var j=0; j<4; j++) bf[j] = data[off+3-j];
dim.push((new Uint32Array(bf.buffer))[0]);
}
if(dim[0]*dim[1]<1e6) thmb=bufToUrl(buf,ext);
}
else thmb=bufToUrl(buf,ext);
}
if(thmb) { file.push(thmb); timg++; }
}
function findJPG(name, buf) {
buf = new Uint8Array(buf); //console.log(buf);
var d8=-1, d9=-1, end=buf.length-1;
var ints = [];
for(var i=2; i<end; i++) {
if(buf[i]==255) {
var b1=buf[i+1], b2=buf[i+2], b3 = buf[i+3];
//if(b1==0xd8 && b2==0xff) console.log(name);
if (d8==-1 && b1==0xd8 && b2==0xff) d8=i;
else if(d8!=-1 && b1==0xd9) { d9=i; ints.push(d8,d9); d8=d9=-1; }
}
}
if(ints.length!=0) {
d8=ints[0]; d9=ints[1];
return bufToUrl(buf.slice(d8, d9+2).buffer, "jpg");
}
}
var u8 = new Uint8Array(4);
var u16 = new Uint16Array(u8.buffer);
var u32 = new Uint32Array(u8.buffer);
function readASCII (b, o, l) { var out=""; for(var i=0; i<l; i++) out+=String.fromCharCode(b[o+i]); return out; }
function readUshort(b, o) { u8[0]=b[o+1]; u8[1]=b[o]; return u16[0]; }
function readUint (b, o) { u8[0]=b[o+3]; u8[1]=b[o+2]; u8[2]=b[o+1]; u8[3]=b[o]; return u32[0]; }
function bufToUrl(buf, ext) {
var str=[]; buf=new Uint8Array(buf);
for(var i=0; i<buf.length; i++) str.push(String.fromCharCode(buf[i]));
return "data:image/"+ext+(ext=="svg"?"+xml":"")+";base64,"+btoa(str.join(""))
}
async function askPermissions() {
if(dir) {
if(await dir.requestPermission({mode:"readwrite"})!="granted") { send("1","You must give us access to some folder."); return; }
}
else {
try { dir = await window.showDirectoryPicker(); }
catch(e) { console.log(e); send("1","You must give us access to some folder."); return; }
locStor.fset = dir;
var os = locStor.db["transaction"](["rsrc"], "readwrite")["objectStore"]("rsrc");
var ooo=os["put"]({ "k":"fs0", "fset":locStor.fset });
ooo.onerror = function(e) { console.log(e); alert("Storing failed. Browser says: "+e["target"]["error"]["message"],7000); }
}
allowed = true; printFolder("/");
}
function onMessage(e) {
if((typeof e.data) == "string") {
//console.log(e.data);
if(window.showDirectoryPicker==null) { send("1","Your browser can not perform this feature."); return; }
var msg = null;
try { msg = JSON.parse(e.data); } catch(e) { return; }
if(msg.code==null) return;
if(!allowed) { askPermissions(); return; }
if(msg.code=="show") {
noThumbs=msg.nothumbs;
printFolder(msg.prm);
}
else if(msg.code=="load") {
printFile(msg.prm);
}
else if(msg.code=="delete") {
deleteFile(msg.prm);
}
else if(msg.code=="save" && msg.prm.endsWith("/")) makeFolder(msg.prm.slice(0,-1)); // making a folder
else if(msg.code=="forget") { console.log("forget message"); localStorage.setItem("forget", "1"); send("0",""); }
else if(msg.code=="rename") {
send("1","We can not rename files in your coputer yet.");
}
lastMsg=msg;
}
else {
if(lastMsg.code=="save") saveFile(lastMsg.prm, e.data);
}
}
function __getPath(path) {
var pth = []; if(path.length>1) pth=path.slice(1).split("/");
return pth;
}
function send(code,prm) {
var time = Date.now();
var str = JSON.stringify({"code":code, "prm":prm});
//console.log("json", Date.now()-time, str.length);
window.parent.postMessage(str,"*");
}
</script>
</head>
<body onload="go()"></body>
</html> |