spb/admin-ka

1/*2 * noVNC: HTML5 VNC client3 * Copyright (C) 2020 The noVNC authors4 * Licensed under MPL 2.0 (see LICENSE.txt)5 *6 * See README.md for usage and integration instructions.7 */89import { inflateInit, inflate, inflateReset } from "../vendor/pako/lib/zlib/inflate.js";10import ZStream from "../vendor/pako/lib/zlib/zstream.js";1112export default class Inflate {13    constructor() {14        this.strm = new ZStream();15        this.chunkSize = 1024 * 10 * 10;16        this.strm.output = new Uint8Array(this.chunkSize);1718        inflateInit(this.strm);19    }2021    setInput(data) {22        if (!data) {23            //FIXME: flush remaining data.24            /* eslint-disable camelcase */25            this.strm.input = null;26            this.strm.avail_in = 0;27            this.strm.next_in = 0;28        } else {29            this.strm.input = data;30            this.strm.avail_in = this.strm.input.length;31            this.strm.next_in = 0;32            /* eslint-enable camelcase */33        }34    }3536    inflate(expected) {37        // resize our output buffer if it's too small38        // (we could just use multiple chunks, but that would cause an extra39        // allocation each time to flatten the chunks)40        if (expected > this.chunkSize) {41            this.chunkSize = expected;42            this.strm.output = new Uint8Array(this.chunkSize);43        }4445        /* eslint-disable camelcase */46        this.strm.next_out = 0;47        this.strm.avail_out = expected;48        /* eslint-enable camelcase */4950        let ret = inflate(this.strm, 0); // Flush argument not used.51        if (ret < 0) {52            throw new Error("zlib inflate failed");53        }5455        if (this.strm.next_out != expected) {56            throw new Error("Incomplete zlib block");57        }5859        return new Uint8Array(this.strm.output.buffer, 0, this.strm.next_out);60    }6162    reset() {63        inflateReset(this.strm);64    }65}66