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| author | pack <pack@packgekko.xyz> | 2026-08-09 10:37:07 +0000 |
|---|---|---|
| committer | pack <pack@packgekko.xyz> | 2026-08-09 10:37:07 +0000 |
| commit | 55a4f1fc869e41aca748c63d3018f0448b1606e0 (patch) | |
| tree | d132d1d01772b6d53faee3e63c534dea5706b78a /node_modules/router/lib/route.js | |
| download | crud-55a4f1fc869e41aca748c63d3018f0448b1606e0.tar.gz | |
first commit
Diffstat (limited to 'node_modules/router/lib/route.js')
| -rw-r--r-- | node_modules/router/lib/route.js | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/node_modules/router/lib/route.js b/node_modules/router/lib/route.js new file mode 100644 index 0000000..1887d78 --- /dev/null +++ b/node_modules/router/lib/route.js @@ -0,0 +1,242 @@ +/*! + * 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 + } +}) |