2022-07-02 06:09:45 +00:00
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const URL_REGEXP = /^https?:\/\/[a-zA-Z0-9\-\.:]+(\/?[^?#]*)/
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export type Pattern = readonly [string, string, RegExp | true] | '*'
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export const splitPath = (path: string): string[] => {
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const paths = path.split(/\//) // faster than path.split('/')
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if (paths[0] === '') {
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paths.shift()
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}
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return paths
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}
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const patternCache: { [key: string]: Pattern } = {}
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export const getPattern = (label: string): Pattern | null => {
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// * => wildcard
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// :id{[0-9]+} => ([0-9]+)
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// :id => (.+)
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//const name = ''
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if (label === '*') {
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return '*'
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}
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const match = label.match(/^\:([^\{\}]+)(?:\{(.+)\})?$/)
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if (match) {
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if (!patternCache[label]) {
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if (match[2]) {
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patternCache[label] = [label, match[1], new RegExp('^' + match[2] + '$')]
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} else {
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patternCache[label] = [label, match[1], true]
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}
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}
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return patternCache[label]
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}
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return null
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}
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export const getPathFromURL = (url: string, strict: boolean = true): string => {
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const queryIndex = url.indexOf('?')
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const result = url.substring(url.indexOf('/', 8), queryIndex === -1 ? url.length : queryIndex)
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// if strict routing is false => `/hello/hey/` and `/hello/hey` are treated the same
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// default is true
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if (strict === false && result.endsWith('/')) {
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return result.slice(0, -1)
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}
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return result
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}
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2022-09-05 10:08:10 +00:00
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export const getQueryStringFromURL = (url: string): string => {
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const queryIndex = url.indexOf('?')
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const result = queryIndex !== -1 ? url.substring(queryIndex) : ''
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return result
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}
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2022-07-02 06:09:45 +00:00
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export const isAbsoluteURL = (url: string): boolean => {
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const match = url.match(URL_REGEXP)
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if (match) {
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return true
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}
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return false
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}
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export const mergePath = (...paths: string[]): string => {
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let p: string = ''
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let endsWithSlash = false
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for (let path of paths) {
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/* ['/hey/','/say'] => ['/hey', '/say'] */
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if (p.endsWith('/')) {
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p = p.slice(0, -1)
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endsWithSlash = true
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}
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/* ['/hey','say'] => ['/hey', '/say'] */
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if (!path.startsWith('/')) {
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path = `/${path}`
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}
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/* ['/hey/', '/'] => `/hey/` */
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if (path === '/' && endsWithSlash) {
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p = `${p}/`
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} else if (path !== '/') {
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p = `${p}${path}`
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}
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/* ['/', '/'] => `/` */
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if (path === '/' && p === '') {
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p = '/'
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}
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}
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return p
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}
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