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import { Injectable } from '@angular/core'
import { getAbsoluteAPIUrl } from '@app/shared/misc/utils'
import * as linkify from 'linkifyjs'
import linkifyHtml from 'linkifyjs/html'
@Injectable()
export class LinkifierService {
static CLASSNAME = 'linkified'
private linkifyOptions = {
className: {
mention: LinkifierService.CLASSNAME + '-mention',
url: LinkifierService.CLASSNAME + '-url'
}
}
constructor () {
// Apply plugin
this.mentionWithDomainPlugin(linkify)
}
linkify (text: string) {
return linkifyHtml(text, this.linkifyOptions)
}
private mentionWithDomainPlugin (linkify: any) {
const TT = linkify.scanner.TOKENS // Text tokens
const { TOKENS: MT, State } = linkify.parser // Multi tokens, state
const MultiToken = MT.Base
const S_START = linkify.parser.start
const TT_AT = TT.AT
const TT_DOMAIN = TT.DOMAIN
const TT_LOCALHOST = TT.LOCALHOST
const TT_NUM = TT.NUM
const TT_COLON = TT.COLON
const TT_SLASH = TT.SLASH
const TT_TLD = TT.TLD
const TT_UNDERSCORE = TT.UNDERSCORE
const TT_DOT = TT.DOT
function MENTION (this: any, value: any) {
this.v = value
}
linkify.inherits(MultiToken, MENTION, {
type: 'mentionWithDomain',
isLink: true,
toHref () {
return getAbsoluteAPIUrl() + '/services/redirect/accounts/' + this.toString().substr(1)
}
})
const S_AT = S_START.jump(TT_AT) // @
const S_AT_SYMS = new State()
const S_MENTION = new State(MENTION)
const S_MENTION_DIVIDER = new State()
const S_MENTION_DIVIDER_SYMS = new State()
// @_,
S_AT.on(TT_UNDERSCORE, S_AT_SYMS)
// @_*
S_AT_SYMS
.on(TT_UNDERSCORE, S_AT_SYMS)
.on(TT_DOT, S_AT_SYMS)
// Valid mention (not made up entirely of symbols)
S_AT
.on(TT_DOMAIN, S_MENTION)
.on(TT_LOCALHOST, S_MENTION)
.on(TT_TLD, S_MENTION)
.on(TT_NUM, S_MENTION)
S_AT_SYMS
.on(TT_DOMAIN, S_MENTION)
.on(TT_LOCALHOST, S_MENTION)
.on(TT_TLD, S_MENTION)
.on(TT_NUM, S_MENTION)
// More valid mentions
S_MENTION
.on(TT_DOMAIN, S_MENTION)
.on(TT_LOCALHOST, S_MENTION)
.on(TT_TLD, S_MENTION)
.on(TT_COLON, S_MENTION)
.on(TT_NUM, S_MENTION)
.on(TT_UNDERSCORE, S_MENTION)
// Mention with a divider
S_MENTION
.on(TT_AT, S_MENTION_DIVIDER)
.on(TT_SLASH, S_MENTION_DIVIDER)
.on(TT_DOT, S_MENTION_DIVIDER)
// Mention _ trailing stash plus syms
S_MENTION_DIVIDER.on(TT_UNDERSCORE, S_MENTION_DIVIDER_SYMS)
S_MENTION_DIVIDER_SYMS.on(TT_UNDERSCORE, S_MENTION_DIVIDER_SYMS)
// Once we get a word token, mentions can start up again
S_MENTION_DIVIDER
.on(TT_DOMAIN, S_MENTION)
.on(TT_LOCALHOST, S_MENTION)
.on(TT_TLD, S_MENTION)
.on(TT_NUM, S_MENTION)
S_MENTION_DIVIDER_SYMS
.on(TT_DOMAIN, S_MENTION)
.on(TT_LOCALHOST, S_MENTION)
.on(TT_TLD, S_MENTION)
.on(TT_NUM, S_MENTION)
}
}
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