Spaces:
Running
Running
File size: 10,459 Bytes
7c5b7bd |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 |
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CborDecoderBase = void 0;
const tslib_1 = require("tslib");
const f16_1 = require("@jsonjoy.com/util/lib/buffers/f16");
const JsonPackExtension_1 = require("../JsonPackExtension");
const JsonPackValue_1 = require("../JsonPackValue");
const Reader_1 = require("@jsonjoy.com/util/lib/buffers/Reader");
const sharedCachedUtf8Decoder_1 = tslib_1.__importDefault(require("@jsonjoy.com/util/lib/buffers/utf8/sharedCachedUtf8Decoder"));
class CborDecoderBase {
constructor(reader = new Reader_1.Reader(), keyDecoder = sharedCachedUtf8Decoder_1.default) {
this.reader = reader;
this.keyDecoder = keyDecoder;
}
read(uint8) {
this.reader.reset(uint8);
return this.val();
}
decode(uint8) {
this.reader.reset(uint8);
return this.val();
}
val() {
const reader = this.reader;
const octet = reader.u8();
const major = octet >> 5;
const minor = octet & 31;
if (major < 4) {
if (major < 2)
return major === 0 ? this.readUint(minor) : this.readNint(minor);
else
return major === 2 ? this.readBin(minor) : this.readStr(minor);
}
else {
if (major < 6)
return major === 4 ? this.readArr(minor) : this.readObj(minor);
else
return major === 6 ? this.readTag(minor) : this.readTkn(minor);
}
}
readAnyRaw(octet) {
const major = octet >> 5;
const minor = octet & 31;
if (major < 4) {
if (major < 2)
return major === 0 ? this.readUint(minor) : this.readNint(minor);
else
return major === 2 ? this.readBin(minor) : this.readStr(minor);
}
else {
if (major < 6)
return major === 4 ? this.readArr(minor) : this.readObj(minor);
else
return major === 6 ? this.readTag(minor) : this.readTkn(minor);
}
}
readMinorLen(minor) {
if (minor < 24)
return minor;
switch (minor) {
case 24:
return this.reader.u8();
case 25:
return this.reader.u16();
case 26:
return this.reader.u32();
case 27:
return Number(this.reader.u64());
case 31:
return -1;
default:
throw 1;
}
}
readUint(minor) {
if (minor < 25) {
return minor === 24 ? this.reader.u8() : minor;
}
else {
if (minor < 27) {
return minor === 25 ? this.reader.u16() : this.reader.u32();
}
else {
const num = this.reader.u64();
return num > 9007199254740991 ? num : Number(num);
}
}
}
readNint(minor) {
if (minor < 25) {
return minor === 24 ? -this.reader.u8() - 1 : -minor - 1;
}
else {
if (minor < 27) {
return minor === 25 ? -this.reader.u16() - 1 : -this.reader.u32() - 1;
}
else {
const num = this.reader.u64();
return num > 9007199254740991 - 1 ? -num - BigInt(1) : -Number(num) - 1;
}
}
}
readBin(minor) {
const reader = this.reader;
if (minor <= 23)
return reader.buf(minor);
switch (minor) {
case 24:
return reader.buf(reader.u8());
case 25:
return reader.buf(reader.u16());
case 26:
return reader.buf(reader.u32());
case 27:
return reader.buf(Number(reader.u64()));
case 31: {
let size = 0;
const list = [];
while (this.reader.peak() !== 255) {
const uint8 = this.readBinChunk();
size += uint8.length;
list.push(uint8);
}
this.reader.x++;
const res = new Uint8Array(size);
let offset = 0;
const length = list.length;
for (let i = 0; i < length; i++) {
const arr = list[i];
res.set(arr, offset);
offset += arr.length;
}
return res;
}
default:
throw 1;
}
}
readBinChunk() {
const octet = this.reader.u8();
const major = octet >> 5;
const minor = octet & 31;
if (major !== 2)
throw 2;
if (minor > 27)
throw 3;
return this.readBin(minor);
}
readAsStr() {
const reader = this.reader;
const octet = reader.u8();
const major = octet >> 5;
const minor = octet & 31;
if (major !== 3)
throw 11;
return this.readStr(minor);
}
readStr(minor) {
const reader = this.reader;
if (minor <= 23)
return reader.utf8(minor);
switch (minor) {
case 24:
return reader.utf8(reader.u8());
case 25:
return reader.utf8(reader.u16());
case 26:
return reader.utf8(reader.u32());
case 27:
return reader.utf8(Number(reader.u64()));
case 31: {
let str = '';
while (reader.peak() !== 255)
str += this.readStrChunk();
this.reader.x++;
return str;
}
default:
throw 1;
}
}
readStrLen(minor) {
if (minor <= 23)
return minor;
switch (minor) {
case 24:
return this.reader.u8();
case 25:
return this.reader.u16();
case 26:
return this.reader.u32();
case 27:
return Number(this.reader.u64());
default:
throw 1;
}
}
readStrChunk() {
const octet = this.reader.u8();
const major = octet >> 5;
const minor = octet & 31;
if (major !== 3)
throw 4;
if (minor > 27)
throw 5;
return this.readStr(minor);
}
readArr(minor) {
const length = this.readMinorLen(minor);
if (length >= 0)
return this.readArrRaw(length);
return this.readArrIndef();
}
readArrRaw(length) {
const arr = [];
for (let i = 0; i < length; i++)
arr.push(this.val());
return arr;
}
readArrIndef() {
const arr = [];
while (this.reader.peak() !== 255)
arr.push(this.val());
this.reader.x++;
return arr;
}
readObj(minor) {
if (minor < 28) {
let length = minor;
switch (minor) {
case 24:
length = this.reader.u8();
break;
case 25:
length = this.reader.u16();
break;
case 26:
length = this.reader.u32();
break;
case 27:
length = Number(this.reader.u64());
break;
}
const obj = {};
for (let i = 0; i < length; i++) {
const key = this.key();
if (key === '__proto__')
throw 6;
const value = this.val();
obj[key] = value;
}
return obj;
}
else if (minor === 31)
return this.readObjIndef();
else
throw 1;
}
readObjRaw(length) {
const obj = {};
for (let i = 0; i < length; i++) {
const key = this.key();
const value = this.val();
obj[key] = value;
}
return obj;
}
readObjIndef() {
const obj = {};
while (this.reader.peak() !== 255) {
const key = this.key();
if (this.reader.peak() === 255)
throw 7;
const value = this.val();
obj[key] = value;
}
this.reader.x++;
return obj;
}
key() {
const octet = this.reader.u8();
const major = octet >> 5;
const minor = octet & 31;
if (major !== 3)
return String(this.readAnyRaw(octet));
const length = this.readStrLen(minor);
if (length > 31)
return this.reader.utf8(length);
const key = this.keyDecoder.decode(this.reader.uint8, this.reader.x, length);
this.reader.skip(length);
return key;
}
readTag(minor) {
if (minor <= 23)
return this.readTagRaw(minor);
switch (minor) {
case 24:
return this.readTagRaw(this.reader.u8());
case 25:
return this.readTagRaw(this.reader.u16());
case 26:
return this.readTagRaw(this.reader.u32());
case 27:
return this.readTagRaw(Number(this.reader.u64()));
default:
throw 1;
}
}
readTagRaw(tag) {
return new JsonPackExtension_1.JsonPackExtension(tag, this.val());
}
readTkn(minor) {
switch (minor) {
case 0xf4 & 31:
return false;
case 0xf5 & 31:
return true;
case 0xf6 & 31:
return null;
case 0xf7 & 31:
return undefined;
case 0xf8 & 31:
return new JsonPackValue_1.JsonPackValue(this.reader.u8());
case 0xf9 & 31:
return this.f16();
case 0xfa & 31:
return this.reader.f32();
case 0xfb & 31:
return this.reader.f64();
}
if (minor <= 23)
return new JsonPackValue_1.JsonPackValue(minor);
throw 1;
}
f16() {
return (0, f16_1.decodeF16)(this.reader.u16());
}
}
exports.CborDecoderBase = CborDecoderBase;
//# sourceMappingURL=CborDecoderBase.js.map |