web0715/13.webpack/demo1/node_modules/@jsonjoy.com/util/lib/buffers/StreamingReader.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.StreamingReader = void 0;
const Writer_1 = require("./Writer");
const decodeUtf8_1 = require("./utf8/decodeUtf8");
class StreamingReader {
    constructor(allocSize = 16 * 1024) {
        this.dx = 0;
        this.writer = new Writer_1.Writer(allocSize);
    }
    size() {
        return this.writer.x - this.x;
    }
    assertSize(size) {
        if (size > this.size())
            throw new RangeError('OUT_OF_BOUNDS');
    }
    push(uint8) {
        this.writer.buf(uint8, uint8.length);
    }
    consume() {
        this.writer.x0 += this.dx;
        this.dx = 0;
    }
    get uint8() {
        return this.writer.uint8;
    }
    get view() {
        return this.writer.view;
    }
    get x() {
        return this.writer.x0 + this.dx;
    }
    set x(x) {
        this.dx = x - this.writer.x0;
    }
    peak() {
        this.assertSize(1);
        return this.view.getUint8(this.x);
    }
    skip(length) {
        this.assertSize(length);
        this.x += length;
    }
    buf(size) {
        this.assertSize(size);
        const end = this.x + size;
        const bin = this.uint8.subarray(this.x, end);
        this.x = end;
        return bin;
    }
    u8() {
        this.assertSize(1);
        return this.view.getUint8(this.x++);
    }
    i8() {
        this.assertSize(1);
        return this.view.getInt8(this.x++);
    }
    u16() {
        this.assertSize(2);
        const num = this.view.getUint16(this.x);
        this.x += 2;
        return num;
    }
    i16() {
        this.assertSize(2);
        const num = this.view.getInt16(this.x);
        this.x += 2;
        return num;
    }
    u32() {
        this.assertSize(4);
        const num = this.view.getUint32(this.x);
        this.x += 4;
        return num;
    }
    i32() {
        this.assertSize(4);
        const num = this.view.getInt32(this.x);
        this.x += 4;
        return num;
    }
    u64() {
        this.assertSize(8);
        const num = this.view.getBigUint64(this.x);
        this.x += 8;
        return num;
    }
    i64() {
        this.assertSize(8);
        const num = this.view.getBigInt64(this.x);
        this.x += 8;
        return num;
    }
    f32() {
        this.assertSize(4);
        const pos = this.x;
        this.x += 4;
        return this.view.getFloat32(pos);
    }
    f64() {
        this.assertSize(8);
        const pos = this.x;
        this.x += 8;
        return this.view.getFloat64(pos);
    }
    utf8(size) {
        this.assertSize(size);
        const start = this.x;
        this.x += size;
        return (0, decodeUtf8_1.decodeUtf8)(this.uint8, start, size);
    }
    ascii(length) {
        this.assertSize(length);
        const uint8 = this.uint8;
        let str = '';
        const end = this.x + length;
        for (let i = this.x; i < end; i++)
            str += String.fromCharCode(uint8[i]);
        this.x = end;
        return str;
    }
    reset(uint8) {
        this.dx = 0;
        this.writer.reset();
        this.push(uint8);
    }
}
exports.StreamingReader = StreamingReader;
//# sourceMappingURL=StreamingReader.js.map