laya-coreui-es
Version:
laya核心库、ui库es版本，剔除了媒体、TTF等功能。基于 LayaAir-release_2.12.0 修改
416 lines (415 loc) • 13.6 kB
JavaScript
import { Matrix } from "../maths/Matrix";
export class Byte {
static getSystemEndian() {
if (!Byte._sysEndian) {
var buffer = new ArrayBuffer(2);
new DataView(buffer).setInt16(0, 256, true);
Byte._sysEndian = (new Int16Array(buffer))[0] === 256 ? Byte.LITTLE_ENDIAN : Byte.BIG_ENDIAN;
}
return Byte._sysEndian;
}
constructor(data = null) {
this._xd_ = true;
this._allocated_ = 8;
this._pos_ = 0;
this._length = 0;
if (data) {
this._u8d_ = new Uint8Array(data);
this._d_ = new DataView(this._u8d_.buffer);
this._length = this._d_.byteLength;
}
else {
this._resizeBuffer(this._allocated_);
}
}
get buffer() {
var rstBuffer = this._d_.buffer;
if (rstBuffer.byteLength === this._length)
return rstBuffer;
return rstBuffer.slice(0, this._length);
}
get endian() {
return this._xd_ ? Byte.LITTLE_ENDIAN : Byte.BIG_ENDIAN;
}
set endian(value) {
this._xd_ = (value === Byte.LITTLE_ENDIAN);
}
set length(value) {
if (this._allocated_ < value)
this._resizeBuffer(this._allocated_ = Math.floor(Math.max(value, this._allocated_ * 2)));
else if (this._allocated_ > value)
this._resizeBuffer(this._allocated_ = value);
this._length = value;
}
get length() {
return this._length;
}
_resizeBuffer(len) {
try {
var newByteView = new Uint8Array(len);
if (this._u8d_ != null) {
if (this._u8d_.length <= len)
newByteView.set(this._u8d_);
else
newByteView.set(this._u8d_.subarray(0, len));
}
this._u8d_ = newByteView;
this._d_ = new DataView(newByteView.buffer);
}
catch (err) {
throw "Invalid typed array length:" + len;
}
}
getString() {
return this.readString();
}
readString() {
return this._rUTF(this.getUint16());
}
getFloat32Array(start, len) {
return this.readFloat32Array(start, len);
}
readFloat32Array(start, len) {
var end = start + len;
end = (end > this._length) ? this._length : end;
var v = new Float32Array(this._d_.buffer.slice(start, end));
this._pos_ = end;
return v;
}
getUint8Array(start, len) {
return this.readUint8Array(start, len);
}
readUint8Array(start, len) {
var end = start + len;
end = (end > this._length) ? this._length : end;
var v = new Uint8Array(this._d_.buffer.slice(start, end));
this._pos_ = end;
return v;
}
getInt16Array(start, len) {
return this.readInt16Array(start, len);
}
readInt16Array(start, len) {
var end = start + len;
end = (end > this._length) ? this._length : end;
var v = new Int16Array(this._d_.buffer.slice(start, end));
this._pos_ = end;
return v;
}
getFloat32() {
return this.readFloat32();
}
readFloat32() {
if (this._pos_ + 4 > this._length)
throw "getFloat32 error - Out of bounds";
var v = this._d_.getFloat32(this._pos_, this._xd_);
this._pos_ += 4;
return v;
}
getFloat64() {
return this.readFloat64();
}
readFloat64() {
if (this._pos_ + 8 > this._length)
throw "getFloat64 error - Out of bounds";
var v = this._d_.getFloat64(this._pos_, this._xd_);
this._pos_ += 8;
return v;
}
writeFloat32(value) {
this._ensureWrite(this._pos_ + 4);
this._d_.setFloat32(this._pos_, value, this._xd_);
this._pos_ += 4;
}
writeFloat64(value) {
this._ensureWrite(this._pos_ + 8);
this._d_.setFloat64(this._pos_, value, this._xd_);
this._pos_ += 8;
}
getInt32() {
return this.readInt32();
}
readInt32() {
if (this._pos_ + 4 > this._length)
throw "getInt32 error - Out of bounds";
var float = this._d_.getInt32(this._pos_, this._xd_);
this._pos_ += 4;
return float;
}
getUint32() {
return this.readUint32();
}
readUint32() {
if (this._pos_ + 4 > this._length)
throw "getUint32 error - Out of bounds";
var v = this._d_.getUint32(this._pos_, this._xd_);
this._pos_ += 4;
return v;
}
writeInt32(value) {
this._ensureWrite(this._pos_ + 4);
this._d_.setInt32(this._pos_, value, this._xd_);
this._pos_ += 4;
}
writeUint32(value) {
this._ensureWrite(this._pos_ + 4);
this._d_.setUint32(this._pos_, value, this._xd_);
this._pos_ += 4;
}
getInt16() {
return this.readInt16();
}
readInt16() {
if (this._pos_ + 2 > this._length)
throw "getInt16 error - Out of bounds";
var us = this._d_.getInt16(this._pos_, this._xd_);
this._pos_ += 2;
return us;
}
getUint16() {
return this.readUint16();
}
readUint16() {
if (this._pos_ + 2 > this._length)
throw "getUint16 error - Out of bounds";
var us = this._d_.getUint16(this._pos_, this._xd_);
this._pos_ += 2;
return us;
}
writeUint16(value) {
this._ensureWrite(this._pos_ + 2);
this._d_.setUint16(this._pos_, value, this._xd_);
this._pos_ += 2;
}
writeInt16(value) {
this._ensureWrite(this._pos_ + 2);
this._d_.setInt16(this._pos_, value, this._xd_);
this._pos_ += 2;
}
getUint8() {
return this.readUint8();
}
readUint8() {
if (this._pos_ + 1 > this._length)
throw "getUint8 error - Out of bounds";
return this._u8d_[this._pos_++];
}
writeUint8(value) {
this._ensureWrite(this._pos_ + 1);
this._d_.setUint8(this._pos_, value);
this._pos_++;
}
_getUInt8(pos) {
return this._readUInt8(pos);
}
_readUInt8(pos) {
return this._d_.getUint8(pos);
}
_getUint16(pos) {
return this._readUint16(pos);
}
_readUint16(pos) {
return this._d_.getUint16(pos, this._xd_);
}
_getMatrix() {
return this._readMatrix();
}
_readMatrix() {
var rst = new Matrix(this.getFloat32(), this.getFloat32(), this.getFloat32(), this.getFloat32(), this.getFloat32(), this.getFloat32());
return rst;
}
_rUTF(len) {
var v = "", max = this._pos_ + len, c, c2, c3, f = String.fromCharCode;
var u = this._u8d_, i = 0;
var strs = [];
var n = 0;
strs.length = 1000;
while (this._pos_ < max) {
c = u[this._pos_++];
if (c < 0x80) {
if (c != 0)
strs[n++] = f(c);
}
else if (c < 0xE0) {
strs[n++] = f(((c & 0x3F) << 6) | (u[this._pos_++] & 0x7F));
}
else if (c < 0xF0) {
c2 = u[this._pos_++];
strs[n++] = f(((c & 0x1F) << 12) | ((c2 & 0x7F) << 6) | (u[this._pos_++] & 0x7F));
}
else {
c2 = u[this._pos_++];
c3 = u[this._pos_++];
const _code = ((c & 0x0F) << 18) | ((c2 & 0x7F) << 12) | ((c3 & 0x7F) << 6) | (u[this._pos_++] & 0x7F);
if (_code >= 0x10000) {
const _offset = _code - 0x10000;
const _lead = 0xd800 | (_offset >> 10);
const _trail = 0xdc00 | (_offset & 0x3ff);
strs[n++] = f(_lead);
strs[n++] = f(_trail);
}
else {
strs[n++] = f(_code);
}
}
i++;
}
strs.length = n;
return strs.join('');
}
getCustomString(len) {
return this.readCustomString(len);
}
readCustomString(len) {
var v = "", ulen = 0, c, c2, f = String.fromCharCode;
var u = this._u8d_, i = 0;
while (len > 0) {
c = u[this._pos_];
if (c < 0x80) {
v += f(c);
this._pos_++;
len--;
}
else {
ulen = c - 0x80;
this._pos_++;
len -= ulen;
while (ulen > 0) {
c = u[this._pos_++];
c2 = u[this._pos_++];
v += f((c2 << 8) | c);
ulen--;
}
}
}
return v;
}
get pos() {
return this._pos_;
}
set pos(value) {
this._pos_ = value;
}
get bytesAvailable() {
return this._length - this._pos_;
}
clear() {
this._pos_ = 0;
this.length = 0;
}
__getBuffer() {
return this._d_.buffer;
}
writeUTFBytes(value) {
value = value + "";
for (var i = 0, sz = value.length; i < sz; i++) {
var c = value.charCodeAt(i);
if (c <= 0x7F) {
this.writeByte(c);
}
else if (c <= 0x7FF) {
this._ensureWrite(this._pos_ + 2);
this._u8d_.set([0xC0 | (c >> 6), 0x80 | (c & 0x3F)], this._pos_);
this._pos_ += 2;
}
else if (c >= 0xD800 && c <= 0xDBFF) {
i++;
const c2 = value.charCodeAt(i);
if (!Number.isNaN(c2) && c2 >= 0xDC00 && c2 <= 0xDFFF) {
const _p1 = (c & 0x3FF) + 0x40;
const _p2 = c2 & 0x3FF;
const _b1 = 0xF0 | ((_p1 >> 8) & 0x3F);
const _b2 = 0x80 | ((_p1 >> 2) & 0x3F);
const _b3 = 0x80 | ((_p1 & 0x3) << 4) | ((_p2 >> 6) & 0xF);
const _b4 = 0x80 | (_p2 & 0x3F);
this._ensureWrite(this._pos_ + 4);
this._u8d_.set([_b1, _b2, _b3, _b4], this._pos_);
this._pos_ += 4;
}
}
else if (c <= 0xFFFF) {
this._ensureWrite(this._pos_ + 3);
this._u8d_.set([0xE0 | (c >> 12), 0x80 | ((c >> 6) & 0x3F), 0x80 | (c & 0x3F)], this._pos_);
this._pos_ += 3;
}
else {
this._ensureWrite(this._pos_ + 4);
this._u8d_.set([0xF0 | (c >> 18), 0x80 | ((c >> 12) & 0x3F), 0x80 | ((c >> 6) & 0x3F), 0x80 | (c & 0x3F)], this._pos_);
this._pos_ += 4;
}
}
}
writeUTFString(value) {
var tPos = this.pos;
this.writeUint16(1);
this.writeUTFBytes(value);
var dPos = this.pos - tPos - 2;
this._d_.setUint16(tPos, dPos, this._xd_);
}
writeUTFString32(value) {
var tPos = this.pos;
this.writeUint32(1);
this.writeUTFBytes(value);
var dPos = this.pos - tPos - 4;
this._d_.setUint32(tPos, dPos, this._xd_);
}
readUTFString() {
return this.readUTFBytes(this.getUint16());
}
readUTFString32() {
return this.readUTFBytes(this.getUint32());
}
getUTFString() {
return this.readUTFString();
}
readUTFBytes(len = -1) {
if (len === 0)
return "";
var lastBytes = this.bytesAvailable;
if (len > lastBytes)
throw "readUTFBytes error - Out of bounds";
len = len > 0 ? len : lastBytes;
return this._rUTF(len);
}
getUTFBytes(len = -1) {
return this.readUTFBytes(len);
}
writeByte(value) {
this._ensureWrite(this._pos_ + 1);
this._d_.setInt8(this._pos_, value);
this._pos_ += 1;
}
readByte() {
if (this._pos_ + 1 > this._length)
throw "readByte error - Out of bounds";
return this._d_.getInt8(this._pos_++);
}
getByte() {
return this.readByte();
}
_ensureWrite(lengthToEnsure) {
if (this._length < lengthToEnsure)
this._length = lengthToEnsure;
if (this._allocated_ < lengthToEnsure)
this.length = lengthToEnsure;
}
writeArrayBuffer(arraybuffer, offset = 0, length = 0) {
if (offset < 0 || length < 0)
throw "writeArrayBuffer error - Out of bounds";
if (length == 0)
length = arraybuffer.byteLength - offset;
this._ensureWrite(this._pos_ + length);
var uint8array = new Uint8Array(arraybuffer);
this._u8d_.set(uint8array.subarray(offset, offset + length), this._pos_);
this._pos_ += length;
}
readArrayBuffer(length) {
var rst;
rst = this._u8d_.buffer.slice(this._pos_, this._pos_ + length);
this._pos_ = this._pos_ + length;
return rst;
}
}
Byte.BIG_ENDIAN = "bigEndian";
Byte.LITTLE_ENDIAN = "littleEndian";
Byte._sysEndian = null;