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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.// Copyright Joyent, Inc. and other Node contributors.//// Permission is hereby granted, free of charge, to any person obtaining a// copy of this software and associated documentation files (the// "Software"), to deal in the Software without restriction, including// without limitation the rights to use, copy, modify, merge, publish,// distribute, sublicense, and/or sell copies of the Software, and to permit// persons to whom the Software is furnished to do so, subject to the// following conditions://// The above copyright notice and this permission notice shall be included// in all copies or substantial portions of the Software.//// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE// USE OR OTHER DEALINGS IN THE SOFTWARE.
import { Buffer } from "../buffer.ts";import { uvException } from "./errors.ts";import { writeBuffer } from "../internal_binding/node_file.ts";
// IPv4 Segmentconst v4Seg = "(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])";const v4Str = `(${v4Seg}[.]){3}${v4Seg}`;const IPv4Reg = new RegExp(`^${v4Str}$`);
// IPv6 Segmentconst v6Seg = "(?:[0-9a-fA-F]{1,4})";const IPv6Reg = new RegExp(  "^(" +    `(?:${v6Seg}:){7}(?:${v6Seg}|:)|` +    `(?:${v6Seg}:){6}(?:${v4Str}|:${v6Seg}|:)|` +    `(?:${v6Seg}:){5}(?::${v4Str}|(:${v6Seg}){1,2}|:)|` +    `(?:${v6Seg}:){4}(?:(:${v6Seg}){0,1}:${v4Str}|(:${v6Seg}){1,3}|:)|` +    `(?:${v6Seg}:){3}(?:(:${v6Seg}){0,2}:${v4Str}|(:${v6Seg}){1,4}|:)|` +    `(?:${v6Seg}:){2}(?:(:${v6Seg}){0,3}:${v4Str}|(:${v6Seg}){1,5}|:)|` +    `(?:${v6Seg}:){1}(?:(:${v6Seg}){0,4}:${v4Str}|(:${v6Seg}){1,6}|:)|` +    `(?::((?::${v6Seg}){0,5}:${v4Str}|(?::${v6Seg}){1,7}|:))` +    ")(%[0-9a-zA-Z-.:]{1,})?$",);
export function isIPv4(ip: string) {  return RegExp.prototype.test.call(IPv4Reg, ip);}
export function isIPv6(ip: string) {  return RegExp.prototype.test.call(IPv6Reg, ip);}
export function isIP(ip: string) {  if (isIPv4(ip)) {    return 4;  }  if (isIPv6(ip)) {    return 6;  }
  return 0;}
export function makeSyncWrite(fd: number) {  return function (    // deno-lint-ignore no-explicit-any    this: any,    // deno-lint-ignore no-explicit-any    chunk: any,    enc: string,    cb: (err?: Error) => void,  ) {    if (enc !== "buffer") {      chunk = Buffer.from(chunk, enc);    }
    this._handle.bytesWritten += chunk.length;
    const ctx: { errno?: number } = {};    writeBuffer(fd, chunk, 0, chunk.length, null, ctx);
    if (ctx.errno !== undefined) {      const ex = uvException(ctx);      ex.errno = ctx.errno;
      return cb(ex);    }
    cb();  };}
export const normalizedArgsSymbol = Symbol("normalizedArgs");