public final class

PatternsCompat

extends java.lang.Object

 java.lang.Object

↳androidx.core.util.PatternsCompat

Gradle dependencies

compile group: 'androidx.core', name: 'core', version: '1.15.0-alpha02'

  • groupId: androidx.core
  • artifactId: core
  • version: 1.15.0-alpha02

Artifact androidx.core:core:1.15.0-alpha02 it located at Google repository (https://maven.google.com/)

Androidx artifact mapping:

androidx.core:core com.android.support:support-compat

Androidx class mapping:

androidx.core.util.PatternsCompat android.support.v4.util.PatternsCompat

Overview

Commonly used regular expression patterns.

Summary

Fields
public static final java.util.regex.PatternAUTOLINK_EMAIL_ADDRESS

Regular expression pattern to match email addresses.

public static final java.util.regex.PatternAUTOLINK_WEB_URL

Regular expression pattern to match IRIs.

public static final java.util.regex.PatternDOMAIN_NAME

public static final java.util.regex.PatternEMAIL_ADDRESS

public static final java.util.regex.PatternIP_ADDRESS

public static final java.util.regex.PatternWEB_URL

Regular expression pattern to match most part of RFC 3987 Internationalized URLs, aka IRIs.

Methods
from java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Fields

public static final java.util.regex.Pattern IP_ADDRESS

public static final java.util.regex.Pattern DOMAIN_NAME

public static final java.util.regex.Pattern WEB_URL

Regular expression pattern to match most part of RFC 3987 Internationalized URLs, aka IRIs.

public static final java.util.regex.Pattern AUTOLINK_WEB_URL

Regular expression pattern to match IRIs. If a string starts with http(s):// the expression tries to match the URL structure with a relaxed rule for TLDs. If the string does not start with http(s):// the TLDs are expected to be one of the known TLDs.

public static final java.util.regex.Pattern AUTOLINK_EMAIL_ADDRESS

Regular expression pattern to match email addresses. It excludes double quoted local parts and the special characters #&~!^`{}/=$*?| that are included in RFC5321.

public static final java.util.regex.Pattern EMAIL_ADDRESS

Source

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.core.util;

import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP_PREFIX;

import androidx.annotation.RestrictTo;

import java.util.regex.Pattern;

/**
 * Commonly used regular expression patterns.
 */
public final class PatternsCompat {
    /**
     *  Regular expression to match all IANA top-level domains.
     *
     *  List accurate as of 2023/09/11.  List taken from:
     *  http://data.iana.org/TLD/tlds-alpha-by-domain.txt
     *  This pattern is auto-generated by frameworks/ex/common/tools/make-iana-tld-pattern.py
     */
    static final String IANA_TOP_LEVEL_DOMAINS =
        "(?:"
        + "(?:aaa|aarp|abb|abbott|abbvie|abc|able|abogado|abudhabi|academy|accenture|accountant"
        + "|accountants|aco|actor|ads|adult|aeg|aero|aetna|afl|africa|agakhan|agency|aig|airbus"
        + "|airforce|airtel|akdn|alibaba|alipay|allfinanz|allstate|ally|alsace|alstom|amazon|americanexpress"
        + "|americanfamily|amex|amfam|amica|amsterdam|analytics|android|anquan|anz|aol|apartments"
        + "|app|apple|aquarelle|arab|aramco|archi|army|arpa|art|arte|asda|asia|associates|athleta"
        + "|attorney|auction|audi|audible|audio|auspost|author|auto|autos|avianca|aws|axa|azure"
        + "|a[cdefgilmoqrstuwxz])"
        + "|(?:baby|baidu|banamex|bananarepublic|band|bank|bar|barcelona|barclaycard|barclays"
        + "|barefoot|bargains|baseball|basketball|bauhaus|bayern|bbc|bbt|bbva|bcg|bcn|beats|beauty"
        + "|beer|bentley|berlin|best|bestbuy|bet|bharti|bible|bid|bike|bing|bingo|bio|biz|black"
        + "|blackfriday|blockbuster|blog|bloomberg|blue|bms|bmw|bnpparibas|boats|boehringer|bofa"
        + "|bom|bond|boo|book|booking|bosch|bostik|boston|bot|boutique|box|bradesco|bridgestone"
        + "|broadway|broker|brother|brussels|build|builders|business|buy|buzz|bzh|b[abdefghijmnorstvwyz])"
        + "|(?:cab|cafe|cal|call|calvinklein|cam|camera|camp|canon|capetown|capital|capitalone"
        + "|car|caravan|cards|care|career|careers|cars|casa|case|cash|casino|cat|catering|catholic"
        + "|cba|cbn|cbre|cbs|center|ceo|cern|cfa|cfd|chanel|channel|charity|chase|chat|cheap|chintai"
        + "|christmas|chrome|church|cipriani|circle|cisco|citadel|citi|citic|city|cityeats|claims"
        + "|cleaning|click|clinic|clinique|clothing|cloud|club|clubmed|coach|codes|coffee|college"
        + "|cologne|com|comcast|commbank|community|company|compare|computer|comsec|condos|construction"
        + "|consulting|contact|contractors|cooking|cool|coop|corsica|country|coupon|coupons|courses"
        + "|cpa|credit|creditcard|creditunion|cricket|crown|crs|cruise|cruises|cuisinella|cymru"
        + "|cyou|c[acdfghiklmnoruvwxyz])"
        + "|(?:dabur|dad|dance|data|date|dating|datsun|day|dclk|dds|deal|dealer|deals|degree"
        + "|delivery|dell|deloitte|delta|democrat|dental|dentist|desi|design|dev|dhl|diamonds|diet"
        + "|digital|direct|directory|discount|discover|dish|diy|dnp|docs|doctor|dog|domains|dot"
        + "|download|drive|dtv|dubai|dunlop|dupont|durban|dvag|dvr|d[ejkmoz])"
        + "|(?:earth|eat|eco|edeka|edu|education|email|emerck|energy|engineer|engineering|enterprises"
        + "|epson|equipment|ericsson|erni|esq|estate|etisalat|eurovision|eus|events|exchange|expert"
        + "|exposed|express|extraspace|e[cegrstu])"
        + "|(?:fage|fail|fairwinds|faith|family|fan|fans|farm|farmers|fashion|fast|fedex|feedback"
        + "|ferrari|ferrero|fidelity|fido|film|final|finance|financial|fire|firestone|firmdale"
        + "|fish|fishing|fit|fitness|flickr|flights|flir|florist|flowers|fly|foo|food|football"
        + "|ford|forex|forsale|forum|foundation|fox|free|fresenius|frl|frogans|frontdoor|frontier"
        + "|ftr|fujitsu|fun|fund|furniture|futbol|fyi|f[ijkmor])"
        + "|(?:gal|gallery|gallo|gallup|game|games|gap|garden|gay|gbiz|gdn|gea|gent|genting"
        + "|george|ggee|gift|gifts|gives|giving|glass|gle|global|globo|gmail|gmbh|gmo|gmx|godaddy"
        + "|gold|goldpoint|golf|goo|goodyear|goog|google|gop|got|gov|grainger|graphics|gratis|green"
        + "|gripe|grocery|group|guardian|gucci|guge|guide|guitars|guru|g[abdefghilmnpqrstuwy])"
        + "|(?:hair|hamburg|hangout|haus|hbo|hdfc|hdfcbank|health|healthcare|help|helsinki|here"
        + "|hermes|hiphop|hisamitsu|hitachi|hiv|hkt|hockey|holdings|holiday|homedepot|homegoods"
        + "|homes|homesense|honda|horse|hospital|host|hosting|hot|hotels|hotmail|house|how|hsbc"
        + "|hughes|hyatt|hyundai|h[kmnrtu])"
        + "|(?:ibm|icbc|ice|icu|ieee|ifm|ikano|imamat|imdb|immo|immobilien|inc|industries|infiniti"
        + "|info|ing|ink|institute|insurance|insure|int|international|intuit|investments|ipiranga"
        + "|irish|ismaili|ist|istanbul|itau|itv|i[delmnoqrst])"
        + "|(?:jaguar|java|jcb|jeep|jetzt|jewelry|jio|jll|jmp|jnj|jobs|joburg|jot|joy|jpmorgan"
        + "|jprs|juegos|juniper|j[emop])"
        + "|(?:kaufen|kddi|kerryhotels|kerrylogistics|kerryproperties|kfh|kia|kids|kim|kinder"
        + "|kindle|kitchen|kiwi|koeln|komatsu|kosher|kpmg|kpn|krd|kred|kuokgroup|kyoto|k[eghimnprwyz])"
        + "|(?:lacaixa|lamborghini|lamer|lancaster|land|landrover|lanxess|lasalle|lat|latino"
        + "|latrobe|law|lawyer|lds|lease|leclerc|lefrak|legal|lego|lexus|lgbt|lidl|life|lifeinsurance"
        + "|lifestyle|lighting|like|lilly|limited|limo|lincoln|link|lipsy|live|living|llc|llp|loan"
        + "|loans|locker|locus|lol|london|lotte|lotto|love|lpl|lplfinancial|ltd|ltda|lundbeck|luxe"
        + "|luxury|l[abcikrstuvy])"
        + "|(?:madrid|maif|maison|makeup|man|management|mango|map|market|marketing|markets|marriott"
        + "|marshalls|mattel|mba|mckinsey|med|media|meet|melbourne|meme|memorial|men|menu|merckmsd"
        + "|miami|microsoft|mil|mini|mint|mit|mitsubishi|mlb|mls|mma|mobi|mobile|moda|moe|moi|mom"
        + "|monash|money|monster|mormon|mortgage|moscow|moto|motorcycles|mov|movie|msd|mtn|mtr"
        + "|museum|music|m[acdeghklmnopqrstuvwxyz])"
        + "|(?:nab|nagoya|name|natura|navy|nba|nec|net|netbank|netflix|network|neustar|new|news"
        + "|next|nextdirect|nexus|nfl|ngo|nhk|nico|nike|nikon|ninja|nissan|nissay|nokia|norton"
        + "|now|nowruz|nowtv|nra|nrw|ntt|nyc|n[acefgilopruz])"
        + "|(?:obi|observer|office|okinawa|olayan|olayangroup|oldnavy|ollo|omega|one|ong|onl"
        + "|online|ooo|open|oracle|orange|org|organic|origins|osaka|otsuka|ott|ovh|om)"
        + "|(?:page|panasonic|paris|pars|partners|parts|party|pay|pccw|pet|pfizer|pharmacy|phd"
        + "|philips|phone|photo|photography|photos|physio|pics|pictet|pictures|pid|pin|ping|pink"
        + "|pioneer|pizza|place|play|playstation|plumbing|plus|pnc|pohl|poker|politie|porn|post"
        + "|pramerica|praxi|press|prime|pro|prod|productions|prof|progressive|promo|properties"
        + "|property|protection|pru|prudential|pub|pwc|p[aefghklmnrstwy])"
        + "|(?:qpon|quebec|quest|qa)"
        + "|(?:racing|radio|read|realestate|realtor|realty|recipes|red|redstone|redumbrella"
        + "|rehab|reise|reisen|reit|reliance|ren|rent|rentals|repair|report|republican|rest|restaurant"
        + "|review|reviews|rexroth|rich|richardli|ricoh|ril|rio|rip|rocher|rocks|rodeo|rogers|room"
        + "|rsvp|rugby|ruhr|run|rwe|ryukyu|r[eosuw])"
        + "|(?:saarland|safe|safety|sakura|sale|salon|samsclub|samsung|sandvik|sandvikcoromant"
        + "|sanofi|sap|sarl|sas|save|saxo|sbi|sbs|sca|scb|schaeffler|schmidt|scholarships|school"
        + "|schule|schwarz|science|scot|search|seat|secure|security|seek|select|sener|services"
        + "|seven|sew|sex|sexy|sfr|shangrila|sharp|shaw|shell|shia|shiksha|shoes|shop|shopping"
        + "|shouji|show|showtime|silk|sina|singles|site|ski|skin|sky|skype|sling|smart|smile|sncf"
        + "|soccer|social|softbank|software|sohu|solar|solutions|song|sony|soy|spa|space|sport"
        + "|spot|srl|stada|staples|star|statebank|statefarm|stc|stcgroup|stockholm|storage|store"
        + "|stream|studio|study|style|sucks|supplies|supply|support|surf|surgery|suzuki|swatch"
        + "|swiss|sydney|systems|s[abcdeghijklmnorstuvxyz])"
        + "|(?:tab|taipei|talk|taobao|target|tatamotors|tatar|tattoo|tax|taxi|tci|tdk|team|tech"
        + "|technology|tel|temasek|tennis|teva|thd|theater|theatre|tiaa|tickets|tienda|tips|tires"
        + "|tirol|tjmaxx|tjx|tkmaxx|tmall|today|tokyo|tools|top|toray|toshiba|total|tours|town"
        + "|toyota|toys|trade|trading|training|travel|travelers|travelersinsurance|trust|trv|tube"
        + "|tui|tunes|tushu|tvs|t[cdfghjklmnortvwz])"
        + "|(?:ubank|ubs|unicom|university|uno|uol|ups|u[agksyz])"
        + "|(?:vacations|vana|vanguard|vegas|ventures|verisign|versicherung|vet|viajes|video"
        + "|vig|viking|villas|vin|vip|virgin|visa|vision|viva|vivo|vlaanderen|vodka|volkswagen"
        + "|volvo|vote|voting|voto|voyage|v[aceginu])"
        + "|(?:wales|walmart|walter|wang|wanggou|watch|watches|weather|weatherchannel|webcam"
        + "|weber|website|wed|wedding|weibo|weir|whoswho|wien|wiki|williamhill|win|windows|wine"
        + "|winners|wme|wolterskluwer|woodside|work|works|world|wow|wtc|wtf|w[fs])"
        + "|(?:\u03b5\u03bb|\u03b5\u03c5|\u0431\u0433|\u0431\u0435\u043b|\u0434\u0435\u0442\u0438"
        + "|\u0435\u044e|\u043a\u0430\u0442\u043e\u043b\u0438\u043a|\u043a\u043e\u043c|\u043c\u043a\u0434"
        + "|\u043c\u043e\u043d|\u043c\u043e\u0441\u043a\u0432\u0430|\u043e\u043d\u043b\u0430\u0439\u043d"
        + "|\u043e\u0440\u0433|\u0440\u0443\u0441|\u0440\u0444|\u0441\u0430\u0439\u0442|\u0441\u0440\u0431"
        + "|\u0443\u043a\u0440|\u049b\u0430\u0437|\u0570\u0561\u0575|\u05d9\u05e9\u05e8\u05d0\u05dc"
        + "|\u05e7\u05d5\u05dd|\u0627\u0628\u0648\u0638\u0628\u064a|\u0627\u062a\u0635\u0627\u0644\u0627\u062a"
        + "|\u0627\u0631\u0627\u0645\u0643\u0648|\u0627\u0644\u0627\u0631\u062f\u0646|\u0627\u0644\u0628\u062d\u0631\u064a\u0646"
        + "|\u0627\u0644\u062c\u0632\u0627\u0626\u0631|\u0627\u0644\u0633\u0639\u0648\u062f\u064a\u0629"
        + "|\u0627\u0644\u0639\u0644\u064a\u0627\u0646|\u0627\u0644\u0645\u063a\u0631\u0628|\u0627\u0645\u0627\u0631\u0627\u062a"
        + "|\u0627\u06cc\u0631\u0627\u0646|\u0628\u0627\u0631\u062a|\u0628\u0627\u0632\u0627\u0631"
        + "|\u0628\u064a\u062a\u0643|\u0628\u06be\u0627\u0631\u062a|\u062a\u0648\u0646\u0633|\u0633\u0648\u062f\u0627\u0646"
        + "|\u0633\u0648\u0631\u064a\u0629|\u0634\u0628\u0643\u0629|\u0639\u0631\u0627\u0642|\u0639\u0631\u0628"
        + "|\u0639\u0645\u0627\u0646|\u0641\u0644\u0633\u0637\u064a\u0646|\u0642\u0637\u0631|\u0643\u0627\u062b\u0648\u0644\u064a\u0643"
        + "|\u0643\u0648\u0645|\u0645\u0635\u0631|\u0645\u0644\u064a\u0633\u064a\u0627|\u0645\u0648\u0631\u064a\u062a\u0627\u0646\u064a\u0627"
        + "|\u0645\u0648\u0642\u0639|\u0647\u0645\u0631\u0627\u0647|\u067e\u0627\u06a9\u0633\u062a\u0627\u0646"
        + "|\u0680\u0627\u0631\u062a|\u0915\u0949\u092e|\u0928\u0947\u091f|\u092d\u093e\u0930\u0924"
        + "|\u092d\u093e\u0930\u0924\u092e\u094d|\u092d\u093e\u0930\u094b\u0924|\u0938\u0902\u0917\u0920\u0928"
        + "|\u09ac\u09be\u0982\u09b2\u09be|\u09ad\u09be\u09b0\u09a4|\u09ad\u09be\u09f0\u09a4|\u0a2d\u0a3e\u0a30\u0a24"
        + "|\u0aad\u0abe\u0ab0\u0aa4|\u0b2d\u0b3e\u0b30\u0b24|\u0b87\u0ba8\u0bcd\u0ba4\u0bbf\u0baf\u0bbe"
        + "|\u0b87\u0bb2\u0b99\u0bcd\u0b95\u0bc8|\u0b9a\u0bbf\u0b99\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0bc2\u0bb0\u0bcd"
        + "|\u0c2d\u0c3e\u0c30\u0c24\u0c4d|\u0cad\u0cbe\u0cb0\u0ca4|\u0d2d\u0d3e\u0d30\u0d24\u0d02"
        + "|\u0dbd\u0d82\u0d9a\u0dcf|\u0e04\u0e2d\u0e21|\u0e44\u0e17\u0e22|\u0ea5\u0eb2\u0ea7|\u10d2\u10d4"
        + "|\u307f\u3093\u306a|\u30a2\u30de\u30be\u30f3|\u30af\u30e9\u30a6\u30c9|\u30b0\u30fc\u30b0\u30eb"
        + "|\u30b3\u30e0|\u30b9\u30c8\u30a2|\u30bb\u30fc\u30eb|\u30d5\u30a1\u30c3\u30b7\u30e7\u30f3"
        + "|\u30dd\u30a4\u30f3\u30c8|\u4e16\u754c|\u4e2d\u4fe1|\u4e2d\u56fd|\u4e2d\u570b|\u4e2d\u6587\u7f51"
        + "|\u4e9a\u9a6c\u900a|\u4f01\u4e1a|\u4f5b\u5c71|\u4fe1\u606f|\u5065\u5eb7|\u516b\u5366"
        + "|\u516c\u53f8|\u516c\u76ca|\u53f0\u6e7e|\u53f0\u7063|\u5546\u57ce|\u5546\u5e97|\u5546\u6807"
        + "|\u5609\u91cc|\u5609\u91cc\u5927\u9152\u5e97|\u5728\u7ebf|\u5927\u62ff|\u5929\u4e3b\u6559"
        + "|\u5a31\u4e50|\u5bb6\u96fb|\u5e7f\u4e1c|\u5fae\u535a|\u6148\u5584|\u6211\u7231\u4f60"
        + "|\u624b\u673a|\u62db\u8058|\u653f\u52a1|\u653f\u5e9c|\u65b0\u52a0\u5761|\u65b0\u95fb"
        + "|\u65f6\u5c1a|\u66f8\u7c4d|\u673a\u6784|\u6de1\u9a6c\u9521|\u6e38\u620f|\u6fb3\u9580"
        + "|\u70b9\u770b|\u79fb\u52a8|\u7ec4\u7ec7\u673a\u6784|\u7f51\u5740|\u7f51\u5e97|\u7f51\u7ad9"
        + "|\u7f51\u7edc|\u8054\u901a|\u8c37\u6b4c|\u8d2d\u7269|\u901a\u8ca9|\u96c6\u56e2|\u96fb\u8a0a\u76c8\u79d1"
        + "|\u98de\u5229\u6d66|\u98df\u54c1|\u9910\u5385|\u9999\u683c\u91cc\u62c9|\u9999\u6e2f"
        + "|\ub2f7\ub137|\ub2f7\ucef4|\uc0bc\uc131|\ud55c\uad6d"
        + "|xbox|xerox|xfinity|xihuan|xin|xn\\-\\-11b4c3d|xn\\-\\-1ck2e1b|xn\\-\\-1qqw23a|xn\\-\\-2scrj9c"
        + "|xn\\-\\-30rr7y|xn\\-\\-3bst00m|xn\\-\\-3ds443g|xn\\-\\-3e0b707e|xn\\-\\-3hcrj9c|xn\\-\\-3pxu8k"
        + "|xn\\-\\-42c2d9a|xn\\-\\-45br5cyl|xn\\-\\-45brj9c|xn\\-\\-45q11c|xn\\-\\-4dbrk0ce|xn\\-\\-4gbrim"
        + "|xn\\-\\-54b7fta0cc|xn\\-\\-55qw42g|xn\\-\\-55qx5d|xn\\-\\-5su34j936bgsg|xn\\-\\-5tzm5g"
        + "|xn\\-\\-6frz82g|xn\\-\\-6qq986b3xl|xn\\-\\-80adxhks|xn\\-\\-80ao21a|xn\\-\\-80aqecdr1a"
        + "|xn\\-\\-80asehdb|xn\\-\\-80aswg|xn\\-\\-8y0a063a|xn\\-\\-90a3ac|xn\\-\\-90ae|xn\\-\\-90ais"
        + "|xn\\-\\-9dbq2a|xn\\-\\-9et52u|xn\\-\\-9krt00a|xn\\-\\-b4w605ferd|xn\\-\\-bck1b9a5dre4c"
        + "|xn\\-\\-c1avg|xn\\-\\-c2br7g|xn\\-\\-cck2b3b|xn\\-\\-cckwcxetd|xn\\-\\-cg4bki|xn\\-\\-clchc0ea0b2g2a9gcd"
        + "|xn\\-\\-czr694b|xn\\-\\-czrs0t|xn\\-\\-czru2d|xn\\-\\-d1acj3b|xn\\-\\-d1alf|xn\\-\\-e1a4c"
        + "|xn\\-\\-eckvdtc9d|xn\\-\\-efvy88h|xn\\-\\-fct429k|xn\\-\\-fhbei|xn\\-\\-fiq228c5hs"
        + "|xn\\-\\-fiq64b|xn\\-\\-fiqs8s|xn\\-\\-fiqz9s|xn\\-\\-fjq720a|xn\\-\\-flw351e|xn\\-\\-fpcrj9c3d"
        + "|xn\\-\\-fzc2c9e2c|xn\\-\\-fzys8d69uvgm|xn\\-\\-g2xx48c|xn\\-\\-gckr3f0f|xn\\-\\-gecrj9c"
        + "|xn\\-\\-gk3at1e|xn\\-\\-h2breg3eve|xn\\-\\-h2brj9c|xn\\-\\-h2brj9c8c|xn\\-\\-hxt814e"
        + "|xn\\-\\-i1b6b1a6a2e|xn\\-\\-imr513n|xn\\-\\-io0a7i|xn\\-\\-j1aef|xn\\-\\-j1amh|xn\\-\\-j6w193g"
        + "|xn\\-\\-jlq480n2rg|xn\\-\\-jvr189m|xn\\-\\-kcrx77d1x4a|xn\\-\\-kprw13d|xn\\-\\-kpry57d"
        + "|xn\\-\\-kput3i|xn\\-\\-l1acc|xn\\-\\-lgbbat1ad8j|xn\\-\\-mgb9awbf|xn\\-\\-mgba3a3ejt"
        + "|xn\\-\\-mgba3a4f16a|xn\\-\\-mgba7c0bbn0a|xn\\-\\-mgbaakc7dvf|xn\\-\\-mgbaam7a8h|xn\\-\\-mgbab2bd"
        + "|xn\\-\\-mgbah1a3hjkrd|xn\\-\\-mgbai9azgqp6j|xn\\-\\-mgbayh7gpa|xn\\-\\-mgbbh1a|xn\\-\\-mgbbh1a71e"
        + "|xn\\-\\-mgbc0a9azcg|xn\\-\\-mgbca7dzdo|xn\\-\\-mgbcpq6gpa1a|xn\\-\\-mgberp4a5d4ar|xn\\-\\-mgbgu82a"
        + "|xn\\-\\-mgbi4ecexp|xn\\-\\-mgbpl2fh|xn\\-\\-mgbt3dhd|xn\\-\\-mgbtx2b|xn\\-\\-mgbx4cd0ab"
        + "|xn\\-\\-mix891f|xn\\-\\-mk1bu44c|xn\\-\\-mxtq1m|xn\\-\\-ngbc5azd|xn\\-\\-ngbe9e0a|xn\\-\\-ngbrx"
        + "|xn\\-\\-node|xn\\-\\-nqv7f|xn\\-\\-nqv7fs00ema|xn\\-\\-nyqy26a|xn\\-\\-o3cw4h|xn\\-\\-ogbpf8fl"
        + "|xn\\-\\-otu796d|xn\\-\\-p1acf|xn\\-\\-p1ai|xn\\-\\-pgbs0dh|xn\\-\\-pssy2u|xn\\-\\-q7ce6a"
        + "|xn\\-\\-q9jyb4c|xn\\-\\-qcka1pmc|xn\\-\\-qxa6a|xn\\-\\-qxam|xn\\-\\-rhqv96g|xn\\-\\-rovu88b"
        + "|xn\\-\\-rvc1e0am3e|xn\\-\\-s9brj9c|xn\\-\\-ses554g|xn\\-\\-t60b56a|xn\\-\\-tckwe|xn\\-\\-tiq49xqyj"
        + "|xn\\-\\-unup4y|xn\\-\\-vermgensberater\\-ctb|xn\\-\\-vermgensberatung\\-pwb|xn\\-\\-vhquv"
        + "|xn\\-\\-vuq861b|xn\\-\\-w4r85el8fhu5dnra|xn\\-\\-w4rs40l|xn\\-\\-wgbh1c|xn\\-\\-wgbl6a"
        + "|xn\\-\\-xhq521b|xn\\-\\-xkc2al3hye2a|xn\\-\\-xkc2dl3a5ee0h|xn\\-\\-y9a3aq|xn\\-\\-yfro4i67o"
        + "|xn\\-\\-ygbi2ammx|xn\\-\\-zfr164b|xxx|xyz)"
        + "|(?:yachts|yahoo|yamaxun|yandex|yodobashi|yoga|yokohama|you|youtube|yun|y[et])"
        + "|(?:zappos|zara|zero|zip|zone|zuerich|z[amw]))";

    public static final Pattern IP_ADDRESS
            = Pattern.compile(
            "((25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\\.(25[0-5]|2[0-4]"
                    + "[0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1]"
                    + "[0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}"
                    + "|[1-9][0-9]|[0-9]))");

    /**
     * Valid UCS characters defined in RFC 3987. Excludes space characters.
     */
    private static final String UCS_CHAR = "[" +
            "\u00A0-\uD7FF" +
            "\uF900-\uFDCF" +
            "\uFDF0-\uFFEF" +
            "\uD800\uDC00-\uD83F\uDFFD" +
            "\uD840\uDC00-\uD87F\uDFFD" +
            "\uD880\uDC00-\uD8BF\uDFFD" +
            "\uD8C0\uDC00-\uD8FF\uDFFD" +
            "\uD900\uDC00-\uD93F\uDFFD" +
            "\uD940\uDC00-\uD97F\uDFFD" +
            "\uD980\uDC00-\uD9BF\uDFFD" +
            "\uD9C0\uDC00-\uD9FF\uDFFD" +
            "\uDA00\uDC00-\uDA3F\uDFFD" +
            "\uDA40\uDC00-\uDA7F\uDFFD" +
            "\uDA80\uDC00-\uDABF\uDFFD" +
            "\uDAC0\uDC00-\uDAFF\uDFFD" +
            "\uDB00\uDC00-\uDB3F\uDFFD" +
            "\uDB44\uDC00-\uDB7F\uDFFD" +
            "&&[^\u00A0[\u2000-\u200A]\u2028\u2029\u202F\u3000]]";

    /**
     * Valid characters for IRI label defined in RFC 3987.
     */
    private static final String LABEL_CHAR = "a-zA-Z0-9" + UCS_CHAR;

    /**
     * Valid characters for IRI TLD defined in RFC 3987.
     */
    private static final String TLD_CHAR = "a-zA-Z" + UCS_CHAR;

    /**
     * RFC 1035 Section 2.3.4 limits the labels to a maximum 63 octets.
     */
    private static final String IRI_LABEL =
            "[" + LABEL_CHAR + "](?:[" + LABEL_CHAR + "_\\-]{0,61}[" + LABEL_CHAR + "]){0,1}";

    /**
     * RFC 3492 references RFC 1034 and limits Punycode algorithm output to 63 characters.
     */
    private static final String PUNYCODE_TLD = "xn\\-\\-[\\w\\-]{0,58}\\w";

    private static final String TLD = "(" + PUNYCODE_TLD + "|" + "[" + TLD_CHAR + "]{2,63}" +")";

    private static final String HOST_NAME = "(" + IRI_LABEL + "\\.)+" + TLD;

    public static final Pattern DOMAIN_NAME
            = Pattern.compile("(" + HOST_NAME + "|" + IP_ADDRESS + ")");

    private static final String PROTOCOL = "(?i:http|https|rtsp)://";

    /* A word boundary or end of input.  This is to stop foo.sure from matching as foo.su */
    private static final String WORD_BOUNDARY = "(?:\\b|$|^)";

    private static final String USER_INFO = "(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\\(\\)"
            + "\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,64}(?:\\:(?:[a-zA-Z0-9\\$\\-\\_"
            + "\\.\\+\\!\\*\\'\\(\\)\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,25})?\\@";

    private static final String PORT_NUMBER = "\\:\\d{1,5}";

    private static final String PATH_AND_QUERY = "[/\\?](?:(?:[" + LABEL_CHAR
            + ";/\\?:@&=#~"  // plus optional query params
            + "\\-\\.\\+!\\*'\\(\\),_\\$])|(?:%[a-fA-F0-9]{2}))*";

    /**
     *  Regular expression pattern to match most part of RFC 3987
     *  Internationalized URLs, aka IRIs.
     */
    public static final Pattern WEB_URL = Pattern.compile("("
            + "("
            + "(?:" + PROTOCOL + "(?:" + USER_INFO + ")?" + ")?"
            + "(?:" + DOMAIN_NAME + ")"
            + "(?:" + PORT_NUMBER + ")?"
            + ")"
            + "(" + PATH_AND_QUERY + ")?"
            + WORD_BOUNDARY
            + ")");

    /**
     * Regular expression that matches known TLDs and punycode TLDs
     */
    private static final String STRICT_TLD = "(?:" +
            IANA_TOP_LEVEL_DOMAINS + "|" + PUNYCODE_TLD + ")";

    /**
     * Regular expression that matches host names using {@link #STRICT_TLD}
     */
    private static final String STRICT_HOST_NAME = "(?:(?:" + IRI_LABEL + "\\.)+"
            + STRICT_TLD + ")";

    /**
     * Regular expression that matches domain names using either {@link #STRICT_HOST_NAME} or
     * {@link #IP_ADDRESS}
     */
    private static final Pattern STRICT_DOMAIN_NAME
            = Pattern.compile("(?:" + STRICT_HOST_NAME + "|" + IP_ADDRESS + ")");

    /**
     * Regular expression that matches domain names without a TLD
     */
    private static final String RELAXED_DOMAIN_NAME =
            "(?:" + "(?:" + IRI_LABEL + "(?:\\.(?=\\S))" +"?)+" + "|" + IP_ADDRESS + ")";

    /**
     * Regular expression to match strings that do not start with a supported protocol. The TLDs
     * are expected to be one of the known TLDs.
     */
    private static final String WEB_URL_WITHOUT_PROTOCOL = "("
            + WORD_BOUNDARY
            + "(?<!:\\/\\/)"
            + "("
            + "(?:" + STRICT_DOMAIN_NAME + ")"
            + "(?:" + PORT_NUMBER + ")?"
            + ")"
            + "(?:" + PATH_AND_QUERY + ")?"
            + WORD_BOUNDARY
            + ")";

    /**
     * Regular expression to match strings that start with a supported protocol. Rules for domain
     * names and TLDs are more relaxed. TLDs are optional.
     */
    private static final String WEB_URL_WITH_PROTOCOL = "("
            + WORD_BOUNDARY
            + "(?:"
            + "(?:" + PROTOCOL + "(?:" + USER_INFO + ")?" + ")"
            + "(?:" + RELAXED_DOMAIN_NAME + ")?"
            + "(?:" + PORT_NUMBER + ")?"
            + ")"
            + "(?:" + PATH_AND_QUERY + ")?"
            + WORD_BOUNDARY
            + ")";

    /**
     * Regular expression pattern to match IRIs. If a string starts with http(s):// the expression
     * tries to match the URL structure with a relaxed rule for TLDs. If the string does not start
     * with http(s):// the TLDs are expected to be one of the known TLDs.
     *
     */
    @RestrictTo(LIBRARY_GROUP_PREFIX)
    public static final Pattern AUTOLINK_WEB_URL = Pattern.compile(
            "(" + WEB_URL_WITH_PROTOCOL + "|" + WEB_URL_WITHOUT_PROTOCOL + ")");

    /**
     * Regular expression for valid email characters. Does not include some of the valid characters
     * defined in RFC5321: #&~!^`{}/=$*?|
     */
    private static final String EMAIL_CHAR = LABEL_CHAR + "\\+\\-_%'";

    /**
     * Regular expression for local part of an email address. RFC5321 section 4.5.3.1.1 limits
     * the local part to be at most 64 octets.
     */
    private static final String EMAIL_ADDRESS_LOCAL_PART =
            "[" + EMAIL_CHAR + "]" + "(?:[" + EMAIL_CHAR + "\\.]{0,62}[" + EMAIL_CHAR + "])?";

    /**
     * Regular expression for the domain part of an email address. RFC5321 section 4.5.3.1.2 limits
     * the domain to be at most 255 octets.
     */
    private static final String EMAIL_ADDRESS_DOMAIN =
            "(?=.{1,255}(?:\\s|$|^))" + HOST_NAME;

    /**
     * Regular expression pattern to match email addresses. It excludes double quoted local parts
     * and the special characters #&~!^`{}/=$*?| that are included in RFC5321.
     */
    @RestrictTo(LIBRARY_GROUP_PREFIX)
    public static final Pattern AUTOLINK_EMAIL_ADDRESS = Pattern.compile("(" + WORD_BOUNDARY +
            "(?:" + EMAIL_ADDRESS_LOCAL_PART + "@" + EMAIL_ADDRESS_DOMAIN + ")" +
            WORD_BOUNDARY + ")"
    );

    public static final Pattern EMAIL_ADDRESS
            = Pattern.compile(
            "[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" +
                    "\\@" +
                    "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" +
                    "(" +
                    "\\." +
                    "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" +
                    ")+"
    );

    /**
     * Do not create this static utility class.
     */
    private PatternsCompat() {}
}
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