+++ /dev/null
-/*!
- * media-typer
- * Copyright(c) 2014 Douglas Christopher Wilson
- * MIT Licensed
- */
-
-/**
- * RegExp to match *( ";" parameter ) in RFC 2616 sec 3.7
- *
- * parameter = token "=" ( token | quoted-string )
- * token = 1*<any CHAR except CTLs or separators>
- * separators = "(" | ")" | "<" | ">" | "@"
- * | "," | ";" | ":" | "\" | <">
- * | "/" | "[" | "]" | "?" | "="
- * | "{" | "}" | SP | HT
- * quoted-string = ( <"> *(qdtext | quoted-pair ) <"> )
- * qdtext = <any TEXT except <">>
- * quoted-pair = "\" CHAR
- * CHAR = <any US-ASCII character (octets 0 - 127)>
- * TEXT = <any OCTET except CTLs, but including LWS>
- * LWS = [CRLF] 1*( SP | HT )
- * CRLF = CR LF
- * CR = <US-ASCII CR, carriage return (13)>
- * LF = <US-ASCII LF, linefeed (10)>
- * SP = <US-ASCII SP, space (32)>
- * SHT = <US-ASCII HT, horizontal-tab (9)>
- * CTL = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
- * OCTET = <any 8-bit sequence of data>
- */
-var paramRegExp = /; *([!#$%&'\*\+\-\.0-9A-Z\^_`a-z\|~]+) *= *("(?:[ !\u0023-\u005b\u005d-\u007e\u0080-\u00ff]|\\[\u0020-\u007e])*"|[!#$%&'\*\+\-\.0-9A-Z\^_`a-z\|~]+) */g;
-var textRegExp = /^[\u0020-\u007e\u0080-\u00ff]+$/
-var tokenRegExp = /^[!#$%&'\*\+\-\.0-9A-Z\^_`a-z\|~]+$/
-
-/**
- * RegExp to match quoted-pair in RFC 2616
- *
- * quoted-pair = "\" CHAR
- * CHAR = <any US-ASCII character (octets 0 - 127)>
- */
-var qescRegExp = /\\([\u0000-\u007f])/g;
-
-/**
- * RegExp to match chars that must be quoted-pair in RFC 2616
- */
-var quoteRegExp = /([\\"])/g;
-
-/**
- * RegExp to match type in RFC 6838
- *
- * type-name = restricted-name
- * subtype-name = restricted-name
- * restricted-name = restricted-name-first *126restricted-name-chars
- * restricted-name-first = ALPHA / DIGIT
- * restricted-name-chars = ALPHA / DIGIT / "!" / "#" /
- * "$" / "&" / "-" / "^" / "_"
- * restricted-name-chars =/ "." ; Characters before first dot always
- * ; specify a facet name
- * restricted-name-chars =/ "+" ; Characters after last plus always
- * ; specify a structured syntax suffix
- * ALPHA = %x41-5A / %x61-7A ; A-Z / a-z
- * DIGIT = %x30-39 ; 0-9
- */
-var subtypeNameRegExp = /^[A-Za-z0-9][A-Za-z0-9!#$&^_.-]{0,126}$/
-var typeNameRegExp = /^[A-Za-z0-9][A-Za-z0-9!#$&^_-]{0,126}$/
-var typeRegExp = /^ *([A-Za-z0-9][A-Za-z0-9!#$&^_-]{0,126})\/([A-Za-z0-9][A-Za-z0-9!#$&^_.+-]{0,126}) *$/;
-
-/**
- * Module exports.
- */
-
-exports.format = format
-exports.parse = parse
-
-/**
- * Format object to media type.
- *
- * @param {object} obj
- * @return {string}
- * @api public
- */
-
-function format(obj) {
- if (!obj || typeof obj !== 'object') {
- throw new TypeError('argument obj is required')
- }
-
- var parameters = obj.parameters
- var subtype = obj.subtype
- var suffix = obj.suffix
- var type = obj.type
-
- if (!type || !typeNameRegExp.test(type)) {
- throw new TypeError('invalid type')
- }
-
- if (!subtype || !subtypeNameRegExp.test(subtype)) {
- throw new TypeError('invalid subtype')
- }
-
- // format as type/subtype
- var string = type + '/' + subtype
-
- // append +suffix
- if (suffix) {
- if (!typeNameRegExp.test(suffix)) {
- throw new TypeError('invalid suffix')
- }
-
- string += '+' + suffix
- }
-
- // append parameters
- if (parameters && typeof parameters === 'object') {
- var param
- var params = Object.keys(parameters).sort()
-
- for (var i = 0; i < params.length; i++) {
- param = params[i]
-
- if (!tokenRegExp.test(param)) {
- throw new TypeError('invalid parameter name')
- }
-
- string += '; ' + param + '=' + qstring(parameters[param])
- }
- }
-
- return string
-}
-
-/**
- * Parse media type to object.
- *
- * @param {string|object} string
- * @return {Object}
- * @api public
- */
-
-function parse(string) {
- if (!string) {
- throw new TypeError('argument string is required')
- }
-
- // support req/res-like objects as argument
- if (typeof string === 'object') {
- string = getcontenttype(string)
- }
-
- if (typeof string !== 'string') {
- throw new TypeError('argument string is required to be a string')
- }
-
- var index = string.indexOf(';')
- var type = index !== -1
- ? string.substr(0, index)
- : string
-
- var key
- var match
- var obj = splitType(type)
- var params = {}
- var value
-
- paramRegExp.lastIndex = index
-
- while (match = paramRegExp.exec(string)) {
- if (match.index !== index) {
- throw new TypeError('invalid parameter format')
- }
-
- index += match[0].length
- key = match[1].toLowerCase()
- value = match[2]
-
- if (value[0] === '"') {
- // remove quotes and escapes
- value = value
- .substr(1, value.length - 2)
- .replace(qescRegExp, '$1')
- }
-
- params[key] = value
- }
-
- if (index !== -1 && index !== string.length) {
- throw new TypeError('invalid parameter format')
- }
-
- obj.parameters = params
-
- return obj
-}
-
-/**
- * Get content-type from req/res objects.
- *
- * @param {object}
- * @return {Object}
- * @api private
- */
-
-function getcontenttype(obj) {
- if (typeof obj.getHeader === 'function') {
- // res-like
- return obj.getHeader('content-type')
- }
-
- if (typeof obj.headers === 'object') {
- // req-like
- return obj.headers && obj.headers['content-type']
- }
-}
-
-/**
- * Quote a string if necessary.
- *
- * @param {string} val
- * @return {string}
- * @api private
- */
-
-function qstring(val) {
- var str = String(val)
-
- // no need to quote tokens
- if (tokenRegExp.test(str)) {
- return str
- }
-
- if (str.length > 0 && !textRegExp.test(str)) {
- throw new TypeError('invalid parameter value')
- }
-
- return '"' + str.replace(quoteRegExp, '\\$1') + '"'
-}
-
-/**
- * Simply "type/subtype+siffx" into parts.
- *
- * @param {string} string
- * @return {Object}
- * @api private
- */
-
-function splitType(string) {
- var match = typeRegExp.exec(string.toLowerCase())
-
- if (!match) {
- throw new TypeError('invalid media type')
- }
-
- var type = match[1]
- var subtype = match[2]
- var suffix
-
- // suffix after last +
- var index = subtype.lastIndexOf('+')
- if (index !== -1) {
- suffix = subtype.substr(index + 1)
- subtype = subtype.substr(0, index)
- }
-
- var obj = {
- type: type,
- subtype: subtype,
- suffix: suffix
- }
-
- return obj
-}
Code Review / sdnc / oam.git / blobdiff