File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const Hash = require("../Hash");
const MAX_SHORT_STRING = require("./wasm-hash").MAX_SHORT_STRING;
class BatchedHash extends Hash {
constructor(hash) {
super();
this.string = undefined;
this.encoding = undefined;
this.hash = hash;
}
/**
* Update hash {@link https://nodejs.org/api/crypto.html#crypto_hash_update_data_inputencoding}
* @param {string|Buffer} data data
* @param {string=} inputEncoding data encoding
* @returns {this} updated hash
*/
update(data, inputEncoding) {
if (this.string !== undefined) {
if (
typeof data === "string" &&
inputEncoding === this.encoding &&
this.string.length + data.length < MAX_SHORT_STRING
) {
this.string += data;
return this;
}
this.hash.update(this.string, this.encoding);
this.string = undefined;
}
if (typeof data === "string") {
if (
data.length < MAX_SHORT_STRING &&
// base64 encoding is not valid since it may contain padding chars
(!inputEncoding || !inputEncoding.startsWith("ba"))
) {
this.string = data;
this.encoding = inputEncoding;
} else {
this.hash.update(data, inputEncoding);
}
} else {
this.hash.update(data);
}
return this;
}
/**
* Calculates the digest {@link https://nodejs.org/api/crypto.html#crypto_hash_digest_encoding}
* @param {string=} encoding encoding of the return value
* @returns {string|Buffer} digest
*/
digest(encoding) {
if (this.string !== undefined) {
this.hash.update(this.string, this.encoding);
}
return this.hash.digest(encoding);
}
}
module.exports = BatchedHash;