static-fs/dist/common/path.js

A static filesystem to bundle files and read them using Node.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isWindowsPath = isWindowsPath;
exports.nodePathToString = nodePathToString;
exports.unixifyPath = unixifyPath;

var _constants = require("./constants");

function getPathFromURLPosix(url) {
  if (url.hostname !== '') {
    throw new Error(`file URL host must be "localhost" or empty on ${process.platform}`);
  }

  const pathname = url.pathname;

  for (let n = 0; n < pathname.length; n++) {
    if (pathname[n] === '%') {
      const third = pathname.codePointAt(n + 2) | 0x20;

      if (pathname[n + 1] === '2' && third === 102) {
        throw new Error(`file URL path must not include encoded / characters`);
      }
    }
  }

  return decodeURIComponent(pathname);
}

function isWindowsPath(filePath) {
  if (!_constants.isWindows) return filePath;

  if (filePath && filePath.length >= 3) {
    if (filePath.charCodeAt(0) === 92 && filePath.charCodeAt(1) === 92) {
      return true;
    }

    if (filePath.charCodeAt(1) === 58 && filePath.charCodeAt(2) === 92) {
      const code = filePath.charCodeAt(0);
      return code >= 65 && code <= 90 || code >= 97 && code <= 122;
    }
  }

  return false;
}

function nodePathToString(path) {
  if (typeof path !== 'string' && !Buffer.isBuffer(path)) {
    if (!(path instanceof require('url').URL)) throw new Error(`The "path" argument must be one of type string, Buffer, or URL. Received type ${typeof path}`);
    path = getPathFromURLPosix(path);
  } // in case it is a buffer convert


  const pathString = String(path); // null check

  if (('' + pathString).indexOf('\u0000') !== -1) {
    const er = new Error('path must be a string without null bytes');
    er.code = 'ENOENT';
    throw er;
  }

  return pathString;
}

function unixifyPath(filePath) {
  if (!_constants.isWindows) return filePath;

  if (filePath && typeof filePath === 'string') {
    return filePath // simplify drive letter
    .replace(/^\\\\\?\\(.):\\/, '$1:\\') // back slashes -> forward slashes with deduplicate
    // eslint-disable-next-line no-useless-escape
    .replace(/[\\\/]+/g, '/') // remove drive letter
    .replace(/^([a-zA-Z]+:|\.\/)/, '') // remove trailing slash
    .replace(/(.+?)\/$/, '$1');
  }

  return filePath;
}