tera/Source/core/buffer.js
progr76@gmail.com 5af6a818a0 0.922
2019-03-16 19:08:05 +03:00

348 lines
10 KiB
JavaScript

/*
* @project: TERA
* @version: Development (beta)
* @license: MIT (not for evil)
* @copyright: Yuriy Ivanov (Vtools) 2017-2019 [progr76@gmail.com]
* Web: https://terafoundation.org
* Twitter: https://twitter.com/terafoundation
* Telegram: https://web.telegram.org/#/im?p=@terafoundation
*/
function Write(e,r,t,n,l)
{
if("number" == typeof t)
throw ToLogTrace("ERRR StringFormat "), "ERR!!";
var a = t;
if("buffer" === a.substr(0, 6) && 6 < a.length)
n = parseInt(a.substr(6)), a = "buffer";
else
if("arr" === a.substr(0, 3) && 3 < a.length)
n = parseInt(a.substr(3)), a = "arr";
else
if("str" === a.substr(0, 3) && 3 < a.length)
{
var f = parseInt(a.substr(3));
return r && e.write(r, e.len, f), void (e.len += f);
}
switch(a)
{
case "str":
var i = toUTF8Array(r);
65535 < (f = i.length) && (f = 0), e[e.len] = 255 & f, e[e.len + 1] = f >>> 8 & 255, e.len += 2;
for(var s = 0; s < f; s++)
e[e.len + s] = i[s];
e.len += f;
break;
case "byte":
r < 0 && (r = 0), e[e.len] = r, e.len += 1;
break;
case "double":
e.writeDoubleLE(r, e.len, 8), e.len += 8;
break;
case "uint":
r < 0 && (r = 0), 0xffffffffffff <= r && (r = 0), e.writeUIntLE(r, e.len, 6), e.len += 6;
break;
case "uint16":
r < 0 && (r = 0), e[e.len] = 255 & r, e[e.len + 1] = r >>> 8 & 255, e.len += 2;
break;
case "uint32":
r < 0 && (r = 0), e.writeUInt32LE(r, e.len, 4), e.len += 4;
break;
case "time":
var u = r.valueOf();
e.writeUIntLE(u, e.len, 6), e.len += 6;
break;
case "addres":
case "hash":
f = r ? Math.min(32, r.length) : 0;
for(s = 0; s < f; s++)
e[e.len + s] = r[s];
e.len += 32;
break;
case "buffer":
f = void 0 === n ? r.length : Math.min(n, r.length);
for(s = 0; s < f; s++)
e[e.len + s] = r[s];
e.len += n;
break;
case "arr":
f = r ? Math.min(n, r.length) : 0;
for(s = 0; s < f; s++)
e[e.len + s] = r[s];
e.len += n;
break;
case "tr":
f = r.length;
MAX_TRANSACTION_SIZE > MAX_TRANSACTION_SIZE && (f = MAX_TRANSACTION_SIZE), e[e.len] = 255 & f, e[e.len + 1] = f >>> 8 & 255,
e.len += 2;
for(s = 0; s < f; s++)
e[e.len + s] = r[s];
e.len += f;
break;
case "data":
f = r.length;
e.writeUInt32LE(f, e.len, 4), e.len += 4;
for(s = 0; s < f; s++)
e[e.len + s] = r[s];
e.len += f;
break;
case "hashSTR":
var o = GetHexFromAddres(r);
e.write(o, e.len, 64), e.len += 64;
break;
case "uintSTR":
o = r.toString();
e.write(o, e.len, 10), e.len += 10;
break;
default:
l = l || {};
var b = t.substr(0, 1);
if("[" === b)
{
r && (f = r.length);
var d = GetMiddleString(a);
Write(e, f, "uint32");
for(s = 0; s < f; s++)
Write(e, r[s], d, void 0, l);
}
else
{
if("{" !== b)
throw "Bad write type params: " + a;
var c = l[a];
c || (c = GetAttributes(GetMiddleString(a)), l[a] = c);
for(s = 0; s < c.length; s++)
{
var h = c[s];
Write(e, r[h.Key], h.Value, void 0, l);
}
}
}
};
function Read(e,r,t,n,l)
{
var a;
if("number" == typeof r)
throw ToLogTrace("ERR StringFormat"), "ERRR!";
var f = r;
if("buffer" === f.substr(0, 6))
6 < f.length ? (t = parseInt(f.substr(6)), f = "buffer") : t = 0;
else
if("arr" === f.substr(0, 3))
3 < f.length ? (t = parseInt(f.substr(3)), f = "arr") : t = 0;
else
if("str" === f.substr(0, 3))
{
if(3 < f.length)
{
var i = parseInt(f.substr(3));
a = e.toString("utf8", e.len, e.len + i), e.len += i;
for(var s = - 1, u = a.length - 1; 0 <= u; u--)
if(0 !== a.charCodeAt(u))
{
s = u;
break;
}
return a = 0 <= s ? a.substr(0, u + 1) : "";
}
t = 0;
}
switch(f)
{
case "str":
i = e.len + 2 <= e.length ? e[e.len] + 256 * e[e.len + 1] : 0, e.len += 2;
var o = e.slice(e.len, e.len + i);
a = Utf8ArrayToStr(o), e.len += i;
break;
case "byte":
a = e.len + 1 <= e.length ? e[e.len] : 0, e.len += 1;
break;
case "double":
a = e.len + 8 <= e.length ? e.readDoubleLE(e.len, 8) : 0, e.len += 8;
break;
case "uint":
a = e.len + 6 <= e.length ? e.readUIntLE(e.len, 6) : 0, e.len += 6;
break;
case "uint16":
a = e.len + 2 <= e.length ? e[e.len] + 256 * e[e.len + 1] : 0, e.len += 2;
break;
case "uint32":
a = e.len + 4 <= e.length ? e.readUInt32LE(e.len, 4) : 0, e.len += 4;
break;
case "time":
if(l)
throw "Bad read type params: time - DisableTime ON";
a = e.len + 6 <= e.length ? e.readUIntLE(e.len, 6) : 0, a = new Date(a), e.len += 6;
break;
case "addres":
case "hash":
a = [];
for(u = 0; u < 32; u++)
e.len + u <= e.length ? a[u] = e[e.len + u] : a[u] = 0;
e.len += 32;
break;
case "buffer":
case "arr":
a = e.len + t <= e.length ? e.slice(e.len, e.len + t) : Buffer.alloc(t), e.len += t;
break;
case "tr":
if(e.len + 1 >= e.length)
{
a = void 0;
break;
}
i = e[e.len] + 256 * e[e.len + 1];
e.len += 2, a = e.slice(e.len, e.len + i), e.len += i;
break;
case "data":
(i = e.len + 4 <= e.length ? e.readUInt32LE(e.len, 4) : 0) > e.length - e.len - 4 && (i = 0), e.len += 4, a = e.slice(e.len,
e.len + i), e.len += i;
break;
case "hashSTR":
var b = e.toString("utf8", e.len, e.len + 64);
a = GetAddresFromHex(b), e.len += 64;
break;
case "uintSTR":
b = e.toString("utf8", e.len, e.len + 10);
a = parseInt(b), e.len += 10;
break;
default:
n = n || {};
var d = f.substr(0, 1);
if("[" === d)
{
a = [];
var c = GetMiddleString(f);
for(i = Read(e, "uint32"), u = 0; u < i && e.len <= e.length; u++)
a[u] = Read(e, c, void 0, n, l);
}
else
{
if("{" !== d)
throw "Bad read type params: " + f;
var h = n[f];
h || (h = GetAttributes(GetMiddleString(f)), n[f] = h), a = {};
for(u = 0; u < h.length; u++)
{
var g = h[u];
a[g.Key] = Read(e, g.Value, void 0, n, l);
}
}
}
return a;
};
function BufWriteByte(e)
{
this[this.len] = e, this.len += 1;
};
function BufWrite(e,r,t)
{
Write(this, e, r, t);
};
function BufRead(e,r)
{
return Read(this, e, r);
};
function GetNewBuffer(e)
{
var r = Buffer.alloc(e);
return r.Read = BufRead.bind(r), r.Write = BufWrite.bind(r), r.len = 0, r;
};
function GetReadBuffer(e)
{
var r = Buffer.from(e);
return r.Read = BufRead.bind(r), r.Write = BufWrite.bind(r), r.len = 0, r;
};
function GetObjectFromBuffer(e,r,t,n)
{
var l = Buffer.from(e);
return l.len = 0, Read(l, r, void 0, t, n);
};
function GetBufferFromObject(e,r,t,n,l)
{
var a = Buffer.alloc(t);
return a.len = 0, Write(a, e, r, void 0, n), l || (a = a.slice(0, a.len)), a;
};
function GetMiddleString(e)
{
return e.substr(1, e.length - 2);
};
function GetMiddleString2(e,r,t)
{
for(var n = 0, l = "", a = 0; a < e.length; a++)
{
var f = e.substr(a, 1);
if(" " !== f && "\n" !== f && (f !== r || 1 != ++n))
{
if(f === t && 0 === --n)
break;
n && (l += f);
}
}
return l;
};
function GetAttributeStrings(e)
{
for(var r = 0, t = [], n = "", l = 0; l < e.length; l++)
{
var a = e.substr(l, 1);
if("{" === a)
r++;
else
if("}" === a)
r--;
else
{
if("," === a && 0 === r)
{
0 < n.length && t.push(n), n = "";
continue;
}
if(" " === a || "\n" === a)
continue;
}
n += a;
}
return 0 < n.length && t.push(n), t;
};
function GetKeyValueStrings(e)
{
for(var r = "", t = 0; t < e.length; t++)
{
var n = e.substr(t, 1);
if(" " !== n && "\n" !== n)
{
if(":" === n)
return {Key:r, Value:e.substr(t + 1)};
r += n;
}
}
throw "Error format Key:Value = " + e;
};
function GetAttributes(e)
{
for(var r = [], t = GetAttributeStrings(e), n = 0; n < t.length; n++)
{
var l = GetKeyValueStrings(t[n]);
r.push(l);
}
return r;
};
module.exports.GetNewBuffer = GetNewBuffer, module.exports.GetReadBuffer = GetReadBuffer, module.exports.alloc = GetNewBuffer,
module.exports.from = GetReadBuffer, module.exports.Write = Write, module.exports.Read = Read, module.exports.GetObjectFromBuffer = GetObjectFromBuffer,
module.exports.GetBufferFromObject = GetBufferFromObject;