71 lines
2.3 KiB
JavaScript
71 lines
2.3 KiB
JavaScript
|
"use strict";
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
exports.CborEncoderStable = void 0;
|
||
|
|
const CborEncoder_1 = require("./CborEncoder");
|
||
|
|
const insertion2_1 = require("@jsonjoy.com/util/lib/sort/insertion2");
|
||
|
|
const objKeyCmp_1 = require("@jsonjoy.com/util/lib/objKeyCmp");
|
||
|
|
const strHeaderLength = (strSize) => {
|
||
|
|
if (strSize <= 23)
|
||
|
|
return 1;
|
||
|
|
else if (strSize <= 0xff)
|
||
|
|
return 2;
|
||
|
|
else if (strSize <= 0xffff)
|
||
|
|
return 3;
|
||
|
|
else
|
||
|
|
return 5;
|
||
|
|
};
|
||
|
|
class CborEncoderStable extends CborEncoder_1.CborEncoder {
|
||
|
|
writeObj(obj) {
|
||
|
|
const keys = Object.keys(obj);
|
||
|
|
(0, insertion2_1.sort)(keys, objKeyCmp_1.objKeyCmp);
|
||
|
|
const length = keys.length;
|
||
|
|
this.writeObjHdr(length);
|
||
|
|
for (let i = 0; i < length; i++) {
|
||
|
|
const key = keys[i];
|
||
|
|
this.writeStr(key);
|
||
|
|
this.writeAny(obj[key]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
writeStr(str) {
|
||
|
|
const writer = this.writer;
|
||
|
|
const length = str.length;
|
||
|
|
const maxSize = length * 4;
|
||
|
|
writer.ensureCapacity(5 + maxSize);
|
||
|
|
const headerLengthGuess = strHeaderLength(length);
|
||
|
|
const x0 = writer.x;
|
||
|
|
const x1 = x0 + headerLengthGuess;
|
||
|
|
writer.x = x1;
|
||
|
|
const bytesWritten = writer.utf8(str);
|
||
|
|
const uint8 = writer.uint8;
|
||
|
|
const headerLength = strHeaderLength(bytesWritten);
|
||
|
|
if (headerLength !== headerLengthGuess) {
|
||
|
|
const shift = headerLength - headerLengthGuess;
|
||
|
|
uint8.copyWithin(x1 + shift, x1, x1 + bytesWritten);
|
||
|
|
}
|
||
|
|
switch (headerLength) {
|
||
|
|
case 1:
|
||
|
|
uint8[x0] = 96 + bytesWritten;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
uint8[x0] = 0x78;
|
||
|
|
uint8[x0 + 1] = bytesWritten;
|
||
|
|
break;
|
||
|
|
case 3: {
|
||
|
|
uint8[x0] = 0x79;
|
||
|
|
writer.view.setUint16(x0 + 1, bytesWritten);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 5: {
|
||
|
|
uint8[x0] = 0x7a;
|
||
|
|
writer.view.setUint32(x0 + 1, bytesWritten);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
writer.x = x0 + headerLength + bytesWritten;
|
||
|
|
}
|
||
|
|
writeUndef() {
|
||
|
|
this.writeNull();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
exports.CborEncoderStable = CborEncoderStable;
|
||
|
|
//# sourceMappingURL=CborEncoderStable.js.map
|