paste.chapril.org-privatebin/js/zlib-1.2.13-1.js

147 lines
5.1 KiB
JavaScript
Raw Normal View History

'use strict';
2019-05-11 10:38:14 +02:00
(function() {
let ret;
async function initialize() {
if (ret) return ret;
const COMPRESSION_LEVEL = 7;
const NO_ZLIB_HEADER = -1;
const CHUNK_SIZE = 32 * 1024;
const map = {};
const memory = new WebAssembly.Memory({
initial: 1,
maximum: 1024, // 64MB
});
const env = {
memory,
writeToJs(ptr, size) {
const o = map[ptr];
o.onData(new Uint8Array(memory.buffer, dstPtr, size));
},
_abort: errno => { console.error(`Error: ${errno}`) },
_grow: () => { },
};
let buff;
address nodejs unit testing issue mocha tests started failing as of node 20.10.0, likely due to this change: https://github.com/nodejs/node/pull/49936 Error was: node:internal/deps/undici/undici:11730 Error.captureStackTrace(err, this); ^ TypeError: Failed to parse URL from js/zlib-1.2.13.wasm at Object.fetch (node:internal/deps/undici/undici:11730:11) at async initialize (/home/runner/work/PrivateBin/PrivateBin/js/zlib-1.2.13.js:31:26) { [cause]: TypeError: Invalid URL: js/zlib-1.2.13.wasm at new URLImpl (/home/runner/work/PrivateBin/PrivateBin/js/node_modules/jsdom-url/node_modules/whatwg-url/lib/URL-impl.js:21:13) at new URLImplCore (/home/runner/work/PrivateBin/PrivateBin/js/node_modules/jsdom-url/lib/URLImpl.js:18:9) at new URLCore (/home/runner/work/PrivateBin/PrivateBin/js/node_modules/jsdom-url/lib/URL.js:28:9) at Object.construct (/home/runner/work/PrivateBin/PrivateBin/js/node_modules/class-proxy/index.js:18:23) at new Request (node:internal/deps/undici/undici:5270:25) at fetch (node:internal/deps/undici/undici:9508:25) at Object.fetch (node:internal/deps/undici/undici:11728:18) at fetch (node:internal/process/pre_execution:314:27) at initialize (/home/runner/work/PrivateBin/PrivateBin/js/zlib-1.2.13.js:31:32) at Object.<anonymous> (/home/runner/work/PrivateBin/PrivateBin/js/zlib-1.2.13.js:145:17) at Object.<anonymous> (/home/runner/work/PrivateBin/PrivateBin/js/zlib-1.2.13.js:146:4) [...] Notice that the error occurs on line 31, meaning that fetch is not undefined anymore. Node works on supporting fetch, which would make our workaround using fs.readFileSync obsolete, but it (or rather the undici library) currently doesn't support relative URLs.
2023-12-03 14:40:59 +01:00
if (typeof fs === 'object') {
2022-10-15 09:05:19 +02:00
buff = fs.readFileSync('zlib-1.2.13.wasm');
2019-05-11 10:38:14 +02:00
} else {
2022-10-15 09:05:19 +02:00
const resp = await fetch('js/zlib-1.2.13.wasm');
2019-05-11 10:38:14 +02:00
buff = await resp.arrayBuffer();
}
const module = await WebAssembly.compile(buff);
const ins = await WebAssembly.instantiate(module, { env });
const srcPtr = ins.exports._malloc(CHUNK_SIZE);
const dstPtr = ins.exports._malloc(CHUNK_SIZE);
class RawDef {
constructor() {
this.zstreamPtr = ins.exports._createDeflateContext(COMPRESSION_LEVEL, NO_ZLIB_HEADER);
map[this.zstreamPtr] = this;
this.offset = 0;
this.buff = new Uint8Array(CHUNK_SIZE);
}
deflate(chunk, flush) {
const src = new Uint8Array(memory.buffer, srcPtr, chunk.length);
src.set(chunk);
ins.exports._deflate(this.zstreamPtr, srcPtr, dstPtr, chunk.length, CHUNK_SIZE, flush);
}
onData(chunk) {
if (this.buff.length < this.offset + chunk.length) {
const buff = this.buff;
this.buff = new Uint8Array(this.buff.length * 2);
this.buff.set(buff);
}
this.buff.set(chunk, this.offset);
this.offset += chunk.length;
}
destroy() {
ins.exports._freeDeflateContext(this.zstreamPtr);
delete map[this.zstreamPtr];
this.buff = null;
}
getBuffer() {
const res = new Uint8Array(this.offset);
for (let i = 0; i < this.offset; ++i) {
res[i] = this.buff[i];
}
return res;
}
}
class RawInf {
constructor() {
this.zstreamPtr = ins.exports._createInflateContext(NO_ZLIB_HEADER);
map[this.zstreamPtr] = this;
this.offset = 0;
this.buff = new Uint8Array(CHUNK_SIZE);
}
inflate(chunk) {
const src = new Uint8Array(memory.buffer, srcPtr, chunk.length);
src.set(chunk);
ins.exports._inflate(this.zstreamPtr, srcPtr, dstPtr, chunk.length, CHUNK_SIZE);
}
onData(chunk) {
if (this.buff.length < this.offset + chunk.length) {
const buff = this.buff;
this.buff = new Uint8Array(this.buff.length * 2);
this.buff.set(buff);
}
this.buff.set(chunk, this.offset);
this.offset += chunk.length;
}
destroy() {
ins.exports._freeInflateContext(this.zstreamPtr);
delete map[this.zstreamPtr];
this.buff = null;
}
getBuffer() {
const res = new Uint8Array(this.offset);
for (let i = 0; i < this.offset; ++i) {
res[i] = this.buff[i];
}
return res;
}
}
ret = {
inflate(rawDeflateBuffer) {
const rawInf = new RawInf();
for (let offset = 0; offset < rawDeflateBuffer.length; offset += CHUNK_SIZE) {
const end = Math.min(offset + CHUNK_SIZE, rawDeflateBuffer.length);
const chunk = rawDeflateBuffer.subarray(offset, end);
rawInf.inflate(chunk);
}
const ret = rawInf.getBuffer();
rawInf.destroy();
return ret;
},
deflate(rawInflateBuffer) {
const rawDef = new RawDef();
for (let offset = 0; offset < rawInflateBuffer.length; offset += CHUNK_SIZE) {
const end = Math.min(offset + CHUNK_SIZE, rawInflateBuffer.length);
const chunk = rawInflateBuffer.subarray(offset, end);
rawDef.deflate(chunk, rawInflateBuffer.length <= offset + CHUNK_SIZE);
}
const ret = rawDef.getBuffer();
rawDef.destroy();
return ret;
},
}
return ret;
}
2019-05-11 10:38:14 +02:00
this.zlib = initialize();
}).call(this);