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Mini Shell
Mini Shell
// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
export const KB = 1024;
export const MB = KB * KB;
export const GB = MB * KB;
export const kMillis2Seconds = 1 / 1000;
export const kMicro2Milli = 1 / 1000;
export function formatBytes(bytes, digits = 2) {
const units = ['B', 'KiB', 'MiB', 'GiB'];
const divisor = 1024;
let index = 0;
while (index < units.length && bytes >= divisor) {
index++;
bytes /= divisor;
}
return bytes.toFixed(digits) + units[index];
}
export function formatMicroSeconds(micro) {
return (micro * kMicro2Milli).toFixed(1) + 'ms';
}
export function formatDurationMicros(micros, digits = 3) {
return formatDurationMillis(micros * kMicro2Milli, digits);
}
export function formatMillis(millis, digits = 3) {
return formatDurationMillis(millis, digits);
}
export function formatDurationMillis(millis, digits = 3) {
if (millis < 1000) {
if (millis < 1) {
if (millis == 0) return (0).toFixed(digits) + 's';
return (millis / kMicro2Milli).toFixed(digits) + 'ns';
}
return millis.toFixed(digits) + 'ms';
}
let seconds = millis / 1000;
const hours = Math.floor(seconds / 3600);
const minutes = Math.floor((seconds % 3600) / 60);
seconds = seconds % 60;
let buffer = '';
if (hours > 0) buffer += hours + 'h ';
if (hours > 0 || minutes > 0) buffer += minutes + 'm ';
buffer += seconds.toFixed(digits) + 's';
return buffer;
}
// Get the offset in the 4GB virtual memory cage.
export function calcOffsetInVMCage(address) {
let mask = (1n << 32n) - 1n;
let ret = Number(address & mask);
return ret;
}
export function delay(time) {
return new Promise(resolver => setTimeout(resolver, time));
}
export function defer() {
let resolve_func, reject_func;
const p = new Promise((resolve, reject) => {
resolve_func = resolve;
reject_func = resolve;
});
p.resolve = resolve_func;
p.reject = reject_func;
return p;
}
const kSimpleHtmlEscapeRegexp = /[\&\n><]/g;
function escaperFn(char) {
return `&#${char.charCodeAt(0)};`;
}
export function simpleHtmlEscape(string) {
return string.replace(kSimpleHtmlEscapeRegexp, escaperFn);
}
Zerion Mini Shell 1.0