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authorlittleblack111 <littleblack11111@gmail.com>2026-05-18 23:10:59 +0800
committerlittleblack111 <littleblack11111@gmail.com>2026-05-18 23:41:44 +0800
commitfc87c009806dcc98867f6b58efe29b042aa01dee (patch)
tree8f59b3f4a5b66e9dfef2d40c8d318e258a521228 /node_modules/webpack/lib/util/hash/wasm-hash.js
parent3336b2356ee6152d9c6ae59bd9b87ccbc0958407 (diff)
node: updatemain
Diffstat (limited to 'node_modules/webpack/lib/util/hash/wasm-hash.js')
-rw-r--r--node_modules/webpack/lib/util/hash/wasm-hash.js163
1 files changed, 0 insertions, 163 deletions
diff --git a/node_modules/webpack/lib/util/hash/wasm-hash.js b/node_modules/webpack/lib/util/hash/wasm-hash.js
deleted file mode 100644
index 8b5e1388..00000000
--- a/node_modules/webpack/lib/util/hash/wasm-hash.js
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- MIT License http://www.opensource.org/licenses/mit-license.php
- Author Tobias Koppers @sokra
-*/
-
-"use strict";
-
-// 65536 is the size of a wasm memory page
-// 64 is the maximum chunk size for every possible wasm hash implementation
-// 4 is the maximum number of bytes per char for string encoding (max is utf-8)
-// ~3 makes sure that it's always a block of 4 chars, so avoid partially encoded bytes for base64
-const MAX_SHORT_STRING = Math.floor((65536 - 64) / 4) & ~3;
-
-class WasmHash {
- /**
- * @param {WebAssembly.Instance} instance wasm instance
- * @param {WebAssembly.Instance[]} instancesPool pool of instances
- * @param {number} chunkSize size of data chunks passed to wasm
- * @param {number} digestSize size of digest returned by wasm
- */
- constructor(instance, instancesPool, chunkSize, digestSize) {
- const exports = /** @type {any} */ (instance.exports);
- exports.init();
- this.exports = exports;
- this.mem = Buffer.from(exports.memory.buffer, 0, 65536);
- this.buffered = 0;
- this.instancesPool = instancesPool;
- this.chunkSize = chunkSize;
- this.digestSize = digestSize;
- }
-
- reset() {
- this.buffered = 0;
- this.exports.init();
- }
-
- /**
- * @param {Buffer | string} data data
- * @param {BufferEncoding=} encoding encoding
- * @returns {this} itself
- */
- update(data, encoding) {
- if (typeof data === "string") {
- while (data.length > MAX_SHORT_STRING) {
- this._updateWithShortString(data.slice(0, MAX_SHORT_STRING), encoding);
- data = data.slice(MAX_SHORT_STRING);
- }
- this._updateWithShortString(data, encoding);
- return this;
- }
- this._updateWithBuffer(data);
- return this;
- }
-
- /**
- * @param {string} data data
- * @param {BufferEncoding=} encoding encoding
- * @returns {void}
- */
- _updateWithShortString(data, encoding) {
- const { exports, buffered, mem, chunkSize } = this;
- let endPos;
- if (data.length < 70) {
- if (!encoding || encoding === "utf-8" || encoding === "utf8") {
- endPos = buffered;
- for (let i = 0; i < data.length; i++) {
- const cc = data.charCodeAt(i);
- if (cc < 0x80) mem[endPos++] = cc;
- else if (cc < 0x800) {
- mem[endPos] = (cc >> 6) | 0xc0;
- mem[endPos + 1] = (cc & 0x3f) | 0x80;
- endPos += 2;
- } else {
- // bail-out for weird chars
- endPos += mem.write(data.slice(i), endPos, encoding);
- break;
- }
- }
- } else if (encoding === "latin1") {
- endPos = buffered;
- for (let i = 0; i < data.length; i++) {
- const cc = data.charCodeAt(i);
- mem[endPos++] = cc;
- }
- } else {
- endPos = buffered + mem.write(data, buffered, encoding);
- }
- } else {
- endPos = buffered + mem.write(data, buffered, encoding);
- }
- if (endPos < chunkSize) {
- this.buffered = endPos;
- } else {
- const l = endPos & ~(this.chunkSize - 1);
- exports.update(l);
- const newBuffered = endPos - l;
- this.buffered = newBuffered;
- if (newBuffered > 0) mem.copyWithin(0, l, endPos);
- }
- }
-
- /**
- * @param {Buffer} data data
- * @returns {void}
- */
- _updateWithBuffer(data) {
- const { exports, buffered, mem } = this;
- const length = data.length;
- if (buffered + length < this.chunkSize) {
- data.copy(mem, buffered, 0, length);
- this.buffered += length;
- } else {
- const l = (buffered + length) & ~(this.chunkSize - 1);
- if (l > 65536) {
- let i = 65536 - buffered;
- data.copy(mem, buffered, 0, i);
- exports.update(65536);
- const stop = l - buffered - 65536;
- while (i < stop) {
- data.copy(mem, 0, i, i + 65536);
- exports.update(65536);
- i += 65536;
- }
- data.copy(mem, 0, i, l - buffered);
- exports.update(l - buffered - i);
- } else {
- data.copy(mem, buffered, 0, l - buffered);
- exports.update(l);
- }
- const newBuffered = length + buffered - l;
- this.buffered = newBuffered;
- if (newBuffered > 0) data.copy(mem, 0, length - newBuffered, length);
- }
- }
-
- digest(type) {
- const { exports, buffered, mem, digestSize } = this;
- exports.final(buffered);
- this.instancesPool.push(this);
- const hex = mem.toString("latin1", 0, digestSize);
- if (type === "hex") return hex;
- if (type === "binary" || !type) return Buffer.from(hex, "hex");
- return Buffer.from(hex, "hex").toString(type);
- }
-}
-
-const create = (wasmModule, instancesPool, chunkSize, digestSize) => {
- if (instancesPool.length > 0) {
- const old = instancesPool.pop();
- old.reset();
- return old;
- }
-
- return new WasmHash(
- new WebAssembly.Instance(wasmModule),
- instancesPool,
- chunkSize,
- digestSize
- );
-};
-
-module.exports = create;
-module.exports.MAX_SHORT_STRING = MAX_SHORT_STRING;