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Viewing file:     index.js (4.31 KB)      -rw-r--r--

'use strict'

const { LRUCache } = require('lru-cache')
const hosts = require('./hosts.js')
const fromUrl = require('./from-url.js')
const parseUrl = require('./parse-url.js')

const cache = new LRUCache({ max: 1000 })

class GitHost {
  constructor (type, user, auth, project, committish, defaultRepresentation, opts = {}) {
    Object.assign(this, GitHost.#gitHosts[type], {
      type,
      user,
      auth,
      project,
      committish,
      default: defaultRepresentation,
      opts,
    })
  }

  static #gitHosts = { byShortcut: {}, byDomain: {} }
  static #protocols = {
    'git+ssh:': { name: 'sshurl' },
    'ssh:': { name: 'sshurl' },
    'git+https:': { name: 'https', auth: true },
    'git:': { auth: true },
    'http:': { auth: true },
    'https:': { auth: true },
    'git+http:': { auth: true },
  }

  static addHost (name, host) {
    GitHost.#gitHosts[name] = host
    GitHost.#gitHosts.byDomain[host.domain] = name
    GitHost.#gitHosts.byShortcut[`${name}:`] = name
    GitHost.#protocols[`${name}:`] = { name }
  }

  static fromUrl (giturl, opts) {
    if (typeof giturl !== 'string') {
      return
    }

    const key = giturl + JSON.stringify(opts || {})

    if (!cache.has(key)) {
      const hostArgs = fromUrl(giturl, opts, {
        gitHosts: GitHost.#gitHosts,
        protocols: GitHost.#protocols,
      })
      cache.set(key, hostArgs ? new GitHost(...hostArgs) : undefined)
    }

    return cache.get(key)
  }

  static parseUrl (url) {
    return parseUrl(url)
  }

  #fill (template, opts) {
    if (typeof template !== 'function') {
      return null
    }

    const options = { ...this, ...this.opts, ...opts }

    // the path should always be set so we don't end up with 'undefined' in urls
    if (!options.path) {
      options.path = ''
    }

    // template functions will insert the leading slash themselves
    if (options.path.startsWith('/')) {
      options.path = options.path.slice(1)
    }

    if (options.noCommittish) {
      options.committish = null
    }

    const result = template(options)
    return options.noGitPlus && result.startsWith('git+') ? result.slice(4) : result
  }

  hash () {
    return this.committish ? `#${this.committish}` : ''
  }

  ssh (opts) {
    return this.#fill(this.sshtemplate, opts)
  }

  sshurl (opts) {
    return this.#fill(this.sshurltemplate, opts)
  }

  browse (path, ...args) {
    // not a string, treat path as opts
    if (typeof path !== 'string') {
      return this.#fill(this.browsetemplate, path)
    }

    if (typeof args[0] !== 'string') {
      return this.#fill(this.browsetreetemplate, { ...args[0], path })
    }

    return this.#fill(this.browsetreetemplate, { ...args[1], fragment: args[0], path })
  }

  // If the path is known to be a file, then browseFile should be used. For some hosts
  // the url is the same as browse, but for others like GitHub a file can use both `/tree/`
  // and `/blob/` in the path. When using a default committish of `HEAD` then the `/tree/`
  // path will redirect to a specific commit. Using the `/blob/` path avoids this and
  // does not redirect to a different commit.
  browseFile (path, ...args) {
    if (typeof args[0] !== 'string') {
      return this.#fill(this.browseblobtemplate, { ...args[0], path })
    }

    return this.#fill(this.browseblobtemplate, { ...args[1], fragment: args[0], path })
  }

  docs (opts) {
    return this.#fill(this.docstemplate, opts)
  }

  bugs (opts) {
    return this.#fill(this.bugstemplate, opts)
  }

  https (opts) {
    return this.#fill(this.httpstemplate, opts)
  }

  git (opts) {
    return this.#fill(this.gittemplate, opts)
  }

  shortcut (opts) {
    return this.#fill(this.shortcuttemplate, opts)
  }

  path (opts) {
    return this.#fill(this.pathtemplate, opts)
  }

  tarball (opts) {
    return this.#fill(this.tarballtemplate, { ...opts, noCommittish: false })
  }

  file (path, opts) {
    return this.#fill(this.filetemplate, { ...opts, path })
  }

  edit (path, opts) {
    return this.#fill(this.edittemplate, { ...opts, path })
  }

  getDefaultRepresentation () {
    return this.default
  }

  toString (opts) {
    if (this.default && typeof this[this.default] === 'function') {
      return this[this.default](opts)
    }

    return this.sshurl(opts)
  }
}

for (const [name, host] of Object.entries(hosts)) {
  GitHost.addHost(name, host)
}

module.exports = GitHost