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293 lines
9.1 KiB
293 lines
9.1 KiB
3 years ago
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'use strict'
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const URL = require('url')
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const { normalizeIPv6, normalizeIPv4, removeDotSegments, recomposeAuthority, normalizeComponentEncoding } = require('./lib/utils')
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const SCHEMES = require('./lib/schemes')
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function normalize (uri, options) {
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if (typeof uri === 'string') {
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uri = serialize(parse(uri, options), options)
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} else if (typeof uri === 'object') {
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uri = parse(serialize(uri, options), options)
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}
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return uri
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}
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function resolve (baseURI, relativeURI, options) {
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const schemelessOptions = Object.assign({ scheme: 'null' }, options)
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const resolved = resolveComponents(parse(baseURI, schemelessOptions), parse(relativeURI, schemelessOptions), schemelessOptions, true)
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return serialize(resolved, { ...schemelessOptions, skipEscape: true })
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}
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function resolveComponents (base, relative, options, skipNormalization) {
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const target = {}
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if (!skipNormalization) {
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base = parse(serialize(base, options), options) // normalize base components
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relative = parse(serialize(relative, options), options) // normalize relative components
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}
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options = options || {}
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if (!options.tolerant && relative.scheme) {
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target.scheme = relative.scheme
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// target.authority = relative.authority;
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target.userinfo = relative.userinfo
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target.host = relative.host
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target.port = relative.port
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target.path = removeDotSegments(relative.path || '')
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target.query = relative.query
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} else {
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if (relative.userinfo !== undefined || relative.host !== undefined || relative.port !== undefined) {
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// target.authority = relative.authority;
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target.userinfo = relative.userinfo
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target.host = relative.host
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target.port = relative.port
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target.path = removeDotSegments(relative.path || '')
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target.query = relative.query
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} else {
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if (!relative.path) {
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target.path = base.path
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if (relative.query !== undefined) {
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target.query = relative.query
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} else {
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target.query = base.query
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}
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} else {
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if (relative.path.charAt(0) === '/') {
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target.path = removeDotSegments(relative.path)
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} else {
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if ((base.userinfo !== undefined || base.host !== undefined || base.port !== undefined) && !base.path) {
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target.path = '/' + relative.path
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} else if (!base.path) {
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target.path = relative.path
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} else {
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target.path = base.path.slice(0, base.path.lastIndexOf('/') + 1) + relative.path
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}
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target.path = removeDotSegments(target.path)
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}
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target.query = relative.query
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}
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// target.authority = base.authority;
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target.userinfo = base.userinfo
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target.host = base.host
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target.port = base.port
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}
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target.scheme = base.scheme
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}
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target.fragment = relative.fragment
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return target
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}
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function equal (uriA, uriB, options) {
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if (typeof uriA === 'string') {
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uriA = unescape(uriA)
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uriA = serialize(normalizeComponentEncoding(parse(uriA, options), true), { ...options, skipEscape: true })
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} else if (typeof uriA === 'object') {
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uriA = serialize(normalizeComponentEncoding(uriA, true), { ...options, skipEscape: true })
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}
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if (typeof uriB === 'string') {
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uriB = unescape(uriB)
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uriB = serialize(normalizeComponentEncoding(parse(uriB, options), true), { ...options, skipEscape: true })
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} else if (typeof uriB === 'object') {
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uriB = serialize(normalizeComponentEncoding(uriB, true), { ...options, skipEscape: true })
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}
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return uriA.toLowerCase() === uriB.toLowerCase()
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}
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function serialize (cmpts, opts) {
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const components = {
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host: cmpts.host,
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scheme: cmpts.scheme,
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userinfo: cmpts.userinfo,
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port: cmpts.port,
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path: cmpts.path,
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query: cmpts.query,
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nid: cmpts.nid,
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nss: cmpts.nss,
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uuid: cmpts.uuid,
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fragment: cmpts.fragment,
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reference: cmpts.reference,
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resourceName: cmpts.resourceName,
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secure: cmpts.secure,
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error: ''
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}
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const options = Object.assign({}, opts)
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const uriTokens = []
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// find scheme handler
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const schemeHandler = SCHEMES[(options.scheme || components.scheme || '').toLowerCase()]
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// perform scheme specific serialization
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if (schemeHandler && schemeHandler.serialize) schemeHandler.serialize(components, options)
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if (components.path !== undefined) {
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if (!options.skipEscape) {
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components.path = escape(components.path)
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if (components.scheme !== undefined) {
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components.path = components.path.split('%3A').join(':')
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}
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} else {
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components.path = unescape(components.path)
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}
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}
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if (options.reference !== 'suffix' && components.scheme) {
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uriTokens.push(components.scheme)
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uriTokens.push(':')
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}
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const authority = recomposeAuthority(components, options)
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if (authority !== undefined) {
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if (options.reference !== 'suffix') {
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uriTokens.push('//')
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}
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uriTokens.push(authority)
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if (components.path && components.path.charAt(0) !== '/') {
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uriTokens.push('/')
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}
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}
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if (components.path !== undefined) {
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let s = components.path
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if (!options.absolutePath && (!schemeHandler || !schemeHandler.absolutePath)) {
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s = removeDotSegments(s)
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}
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if (authority === undefined) {
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s = s.replace(/^\/\//, '/%2F') // don't allow the path to start with "//"
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}
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uriTokens.push(s)
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}
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if (components.query !== undefined) {
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uriTokens.push('?')
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uriTokens.push(components.query)
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}
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if (components.fragment !== undefined) {
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uriTokens.push('#')
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uriTokens.push(components.fragment)
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}
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return uriTokens.join('')
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}
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const URI_PARSE = /^(?:([^:/?#]+):)?(?:\/\/((?:([^/?#@]*)@)?(\[[^/?#\]]+\]|[^/?#:]*)(?::(\d*))?))?([^?#]*)(?:\?([^#]*))?(?:#((?:.|\n|\r)*))?/i
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function parse (uri, opts) {
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const options = Object.assign({}, opts)
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const parsed = {
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scheme: undefined,
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userinfo: undefined,
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host: '',
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port: undefined,
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path: '',
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query: undefined,
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fragment: undefined
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}
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const gotEncoding = uri.indexOf('%') !== -1
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if (options.reference === 'suffix') uri = (options.scheme ? options.scheme + ':' : '') + '//' + uri
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const matches = uri.match(URI_PARSE)
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if (matches) {
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// store each component
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parsed.scheme = matches[1]
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parsed.userinfo = matches[3]
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parsed.host = matches[4]
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parsed.port = parseInt(matches[5], 10)
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parsed.path = matches[6] || ''
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parsed.query = matches[7]
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parsed.fragment = matches[8]
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// fix port number
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if (isNaN(parsed.port)) {
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parsed.port = matches[5]
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}
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if (parsed.host) {
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const ipv4result = normalizeIPv4(parsed.host)
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if (ipv4result.isIPV4 === false) {
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parsed.host = normalizeIPv6(ipv4result.host, { isIPV4: false }).host.toLowerCase()
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} else {
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parsed.host = ipv4result.host
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}
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}
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if (parsed.scheme === undefined && parsed.userinfo === undefined && parsed.host === undefined && parsed.port === undefined && !parsed.path && parsed.query === undefined) {
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parsed.reference = 'same-document'
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} else if (parsed.scheme === undefined) {
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parsed.reference = 'relative'
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} else if (parsed.fragment === undefined) {
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parsed.reference = 'absolute'
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} else {
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parsed.reference = 'uri'
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}
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// check for reference errors
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if (options.reference && options.reference !== 'suffix' && options.reference !== parsed.reference) {
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parsed.error = parsed.error || 'URI is not a ' + options.reference + ' reference.'
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}
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// find scheme handler
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const schemeHandler = SCHEMES[(options.scheme || parsed.scheme || '').toLowerCase()]
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// check if scheme can't handle IRIs
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if (!options.unicodeSupport && (!schemeHandler || !schemeHandler.unicodeSupport)) {
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// if host component is a domain name
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if (parsed.host && (options.domainHost || (schemeHandler && schemeHandler.domainHost))) {
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// convert Unicode IDN -> ASCII IDN
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try {
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parsed.host = URL.domainToASCII(parsed.host.toLowerCase())
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} catch (e) {
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parsed.error = parsed.error || "Host's domain name can not be converted to ASCII: " + e
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}
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}
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// convert IRI -> URI
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}
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if (!schemeHandler || (schemeHandler && !schemeHandler.skipNormalize)) {
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if (gotEncoding && parsed.scheme !== undefined) {
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parsed.scheme = unescape(parsed.scheme)
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}
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if (gotEncoding && parsed.userinfo !== undefined) {
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parsed.userinfo = unescape(parsed.userinfo)
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}
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if (gotEncoding && parsed.host !== undefined) {
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parsed.host = unescape(parsed.host)
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}
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if (parsed.path !== undefined && parsed.path.length) {
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parsed.path = encodeURI(parsed.path)
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}
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if (parsed.fragment !== undefined && parsed.fragment.length) {
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parsed.fragment = encodeURI(decodeURI(parsed.fragment))
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}
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}
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// perform scheme specific parsing
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if (schemeHandler && schemeHandler.parse) {
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schemeHandler.parse(parsed, options)
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}
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} else {
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parsed.error = parsed.error || 'URI can not be parsed.'
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}
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return parsed
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}
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const fastUri = {
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normalize,
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resolve,
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resolveComponents,
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equal,
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serialize,
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parse
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}
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module.exports = fastUri
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module.exports.default = fastUri
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module.exports.fastUri = fastUri
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