root / HServer / 00.Server / 00.Program / node_modules / statuses / index.js
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| 1 | 39 | HKM | /*!
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| 2 | * statuses
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| 3 | * Copyright(c) 2014 Jonathan Ong
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| 4 | * Copyright(c) 2016 Douglas Christopher Wilson
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| 5 | * MIT Licensed
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| 6 | */
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| 7 | |||
| 8 | 'use strict'
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| 9 | |||
| 10 | /**
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| 11 | * Module dependencies.
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| 12 | * @private
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| 13 | */
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| 14 | |||
| 15 | var codes = require('./codes.json') |
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| 16 | |||
| 17 | /**
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| 18 | * Module exports.
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| 19 | * @public
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| 20 | */
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| 21 | |||
| 22 | module.exports = status |
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| 23 | |||
| 24 | // status code to message map
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| 25 | status.STATUS_CODES = codes |
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| 26 | |||
| 27 | // array of status codes
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| 28 | status.codes = populateStatusesMap(status, codes) |
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| 29 | |||
| 30 | // status codes for redirects
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| 31 | status.redirect = {
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| 32 | 300: true, |
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| 33 | 301: true, |
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| 34 | 302: true, |
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| 35 | 303: true, |
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| 36 | 305: true, |
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| 37 | 307: true, |
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| 38 | 308: true |
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| 39 | } |
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| 40 | |||
| 41 | // status codes for empty bodies
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| 42 | status.empty = {
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| 43 | 204: true, |
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| 44 | 205: true, |
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| 45 | 304: true |
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| 46 | } |
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| 47 | |||
| 48 | // status codes for when you should retry the request
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| 49 | status.retry = {
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| 50 | 502: true, |
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| 51 | 503: true, |
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| 52 | 504: true |
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| 53 | } |
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| 54 | |||
| 55 | /**
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| 56 | * Populate the statuses map for given codes.
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| 57 | * @private
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| 58 | */
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| 59 | |||
| 60 | function populateStatusesMap (statuses, codes) { |
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| 61 | var arr = []
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| 62 | |||
| 63 | Object.keys(codes).forEach(function forEachCode (code) { |
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| 64 | var message = codes[code]
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| 65 | var status = Number(code)
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| 66 | |||
| 67 | // Populate properties
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| 68 | statuses[status] = message |
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| 69 | statuses[message] = status |
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| 70 | statuses[message.toLowerCase()] = status |
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| 71 | |||
| 72 | // Add to array
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| 73 | arr.push(status) |
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| 74 | }) |
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| 75 | |||
| 76 | return arr
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| 77 | } |
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| 78 | |||
| 79 | /**
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| 80 | * Get the status code.
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| 81 | *
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| 82 | * Given a number, this will throw if it is not a known status
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| 83 | * code, otherwise the code will be returned. Given a string,
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| 84 | * the string will be parsed for a number and return the code
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| 85 | * if valid, otherwise will lookup the code assuming this is
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| 86 | * the status message.
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| 87 | *
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| 88 | * @param {string|number} code
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| 89 | * @returns {number}
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| 90 | * @public
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| 91 | */
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| 92 | |||
| 93 | function status (code) { |
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| 94 | if (typeof code === 'number') { |
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| 95 | if (!status[code]) throw new Error('invalid status code: ' + code) |
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| 96 | return code
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| 97 | } |
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| 98 | |||
| 99 | if (typeof code !== 'string') { |
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| 100 | throw new TypeError('code must be a number or string') |
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| 101 | } |
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| 102 | |||
| 103 | // '403'
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| 104 | var n = parseInt(code, 10) |
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| 105 | if (!isNaN(n)) {
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| 106 | if (!status[n]) throw new Error('invalid status code: ' + n) |
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| 107 | return n
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| 108 | } |
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| 109 | |||
| 110 | n = status[code.toLowerCase()] |
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| 111 | if (!n) throw new Error('invalid status message: "' + code + '"') |
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| 112 | return n
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| 113 | } |