File Explorer

1'use strict'2 3const parseUrl = require('./parse-url')4 5// look for github shorthand inputs, such as npm/cli6const isGitHubShorthand = (arg) => {7  // it cannot contain whitespace before the first #8  // it cannot start with a / because that's probably an absolute file path9  // but it must include a slash since repos are username/repository10  // it cannot start with a . because that's probably a relative file path11  // it cannot start with an @ because that's a scoped package if it passes the other tests12  // it cannot contain a : before a # because that tells us that there's a protocol13  // a second / may not exist before a #14  const firstHash = arg.indexOf('#')15  const firstSlash = arg.indexOf('/')16  const secondSlash = arg.indexOf('/', firstSlash + 1)17  const firstColon = arg.indexOf(':')18  const firstSpace = /\s/.exec(arg)19  const firstAt = arg.indexOf('@')20 21  const spaceOnlyAfterHash = !firstSpace || (firstHash > -1 && firstSpace.index > firstHash)22  const atOnlyAfterHash = firstAt === -1 || (firstHash > -1 && firstAt > firstHash)23  const colonOnlyAfterHash = firstColon === -1 || (firstHash > -1 && firstColon > firstHash)24  const secondSlashOnlyAfterHash = secondSlash === -1 || (firstHash > -1 && secondSlash > firstHash)25  const hasSlash = firstSlash > 026  // if a # is found, what we really want to know is that the character27  // immediately before # is not a /28  const doesNotEndWithSlash = firstHash > -1 ? arg[firstHash - 1] !== '/' : !arg.endsWith('/')29  const doesNotStartWithDot = !arg.startsWith('.')30 31  return spaceOnlyAfterHash && hasSlash && doesNotEndWithSlash &&32    doesNotStartWithDot && atOnlyAfterHash && colonOnlyAfterHash &&33    secondSlashOnlyAfterHash34}35 36module.exports = (giturl, opts, { gitHosts, protocols }) => {37  if (!giturl) {38    return39  }40 41  const correctedUrl = isGitHubShorthand(giturl) ? `github:${giturl}` : giturl42  const parsed = parseUrl(correctedUrl, protocols)43  if (!parsed) {44    return45  }46 47  const gitHostShortcut = gitHosts.byShortcut[parsed.protocol]48  const gitHostDomain = gitHosts.byDomain[parsed.hostname.startsWith('www.')49    ? parsed.hostname.slice(4)50    : parsed.hostname]51  const gitHostName = gitHostShortcut || gitHostDomain52  if (!gitHostName) {53    return54  }55 56  const gitHostInfo = gitHosts[gitHostShortcut || gitHostDomain]57  let auth = null58  if (protocols[parsed.protocol]?.auth && (parsed.username || parsed.password)) {59    auth = `${parsed.username}${parsed.password ? ':' + parsed.password : ''}`60  }61 62  let committish = null63  let user = null64  let project = null65  let defaultRepresentation = null66 67  try {68    if (gitHostShortcut) {69      let pathname = parsed.pathname.startsWith('/') ? parsed.pathname.slice(1) : parsed.pathname70      const firstAt = pathname.indexOf('@')71      // we ignore auth for shortcuts, so just trim it out72      if (firstAt > -1) {73        pathname = pathname.slice(firstAt + 1)74      }75 76      const lastSlash = pathname.lastIndexOf('/')77      if (lastSlash > -1) {78        user = decodeURIComponent(pathname.slice(0, lastSlash))79        // we want nulls only, never empty strings80        if (!user) {81          user = null82        }83        project = decodeURIComponent(pathname.slice(lastSlash + 1))84      } else {85        project = decodeURIComponent(pathname)86      }87 88      if (project.endsWith('.git')) {89        project = project.slice(0, -4)90      }91 92      if (parsed.hash) {93        committish = decodeURIComponent(parsed.hash.slice(1))94      }95 96      defaultRepresentation = 'shortcut'97    } else {98      if (!gitHostInfo.protocols.includes(parsed.protocol)) {99        return100      }101 102      const segments = gitHostInfo.extract(parsed)103      if (!segments) {104        return105      }106 107      user = segments.user && decodeURIComponent(segments.user)108      project = decodeURIComponent(segments.project)109      committish = decodeURIComponent(segments.committish)110      defaultRepresentation = protocols[parsed.protocol]?.name || parsed.protocol.slice(0, -1)111    }112  } catch (err) {113    /* istanbul ignore else */114    if (err instanceof URIError) {115      return116    } else {117      throw err118    }119  }120 121  return [gitHostName, user, auth, project, committish, defaultRepresentation, opts]122}123