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	layer.js	4.82 MB		View DL Edit
	route.js	4.45 MB		View DL Edit

Edit file: /home/benbot/bot/server/node_modules/router/lib/route.js

/*!
 * router
 * Copyright(c) 2013 Roman Shtylman
 * Copyright(c) 2014-2022 Douglas Christopher Wilson
 * MIT Licensed
 */

'use strict'

/**
 * Module dependencies.
 * @private
 */

const debug = require('debug')('router:route')
const Layer = require('./layer')
const { METHODS } = require('node:http')

/**
 * Module variables.
 * @private
 */

const slice = Array.prototype.slice
const flatten = Array.prototype.flat
const methods = METHODS.map((method) => method.toLowerCase())

/**
 * Expose `Route`.
 */

module.exports = Route

/**
 * Initialize `Route` with the given `path`,
 *
 * @param {String} path
 * @api private
 */

function Route (path) {
  debug('new %o', path)
  this.path = path
  this.stack = []

// route handlers for various http methods
  this.methods = Object.create(null)
}

/**
 * @private
 */

Route.prototype._handlesMethod = function _handlesMethod (method) {
  if (this.methods._all) {
    return true
  }

// normalize name
  let name = typeof method === 'string'
    ? method.toLowerCase()
    : method

if (name === 'head' && !this.methods.head) {
    name = 'get'
  }

return Boolean(this.methods[name])
}

/**
 * @return {array} supported HTTP methods
 * @private
 */

Route.prototype._methods = function _methods () {
  const methods = Object.keys(this.methods)

// append automatic head
  if (this.methods.get && !this.methods.head) {
    methods.push('head')
  }

for (let i = 0; i < methods.length; i++) {
    // make upper case
    methods[i] = methods[i].toUpperCase()
  }

return methods
}

/**
 * dispatch req, res into this route
 *
 * @private
 */

Route.prototype.dispatch = function dispatch (req, res, done) {
  let idx = 0
  const stack = this.stack
  let sync = 0

if (stack.length === 0) {
    return done()
  }

let method = typeof req.method === 'string'
    ? req.method.toLowerCase()
    : req.method

if (method === 'head' && !this.methods.head) {
    method = 'get'
  }

req.route = this

next()

function next (err) {
    // signal to exit route
    if (err && err === 'route') {
      return done()
    }

// signal to exit router
    if (err && err === 'router') {
      return done(err)
    }

// no more matching layers
    if (idx >= stack.length) {
      return done(err)
    }

// max sync stack
    if (++sync > 100) {
      return setImmediate(next, err)
    }

let layer
    let match

// find next matching layer
    while (match !== true && idx < stack.length) {
      layer = stack[idx++]
      match = !layer.method || layer.method === method
    }

// no match
    if (match !== true) {
      return done(err)
    }

if (err) {
      layer.handleError(err, req, res, next)
    } else {
      layer.handleRequest(req, res, next)
    }

sync = 0
  }
}

/**
 * Add a handler for all HTTP verbs to this route.
 *
 * Behaves just like middleware and can respond or call `next`
 * to continue processing.
 *
 * You can use multiple `.all` call to add multiple handlers.
 *
 *   function check_something(req, res, next){
 *     next()
 *   }
 *
 *   function validate_user(req, res, next){
 *     next()
 *   }
 *
 *   route
 *   .all(validate_user)
 *   .all(check_something)
 *   .get(function(req, res, next){
 *     res.send('hello world')
 *   })
 *
 * @param {array|function} handler
 * @return {Route} for chaining
 * @api public
 */

Route.prototype.all = function all (handler) {
  const callbacks = flatten.call(slice.call(arguments), Infinity)

if (callbacks.length === 0) {
    throw new TypeError('argument handler is required')
  }

for (let i = 0; i < callbacks.length; i++) {
    const fn = callbacks[i]

if (typeof fn !== 'function') {
      throw new TypeError('argument handler must be a function')
    }

const layer = Layer('/', {}, fn)
    layer.method = undefined

this.methods._all = true
    this.stack.push(layer)
  }

return this
}

methods.forEach(function (method) {
  Route.prototype[method] = function (handler) {
    const callbacks = flatten.call(slice.call(arguments), Infinity)

if (callbacks.length === 0) {
      throw new TypeError('argument handler is required')
    }

for (let i = 0; i < callbacks.length; i++) {
      const fn = callbacks[i]

if (typeof fn !== 'function') {
        throw new TypeError('argument handler must be a function')
      }

debug('%s %s', method, this.path)

const layer = Layer('/', {}, fn)
      layer.method = method

this.methods[method] = true
      this.stack.push(layer)
    }

return this
  }
})

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