问题
Note: this question could look odd on systems not supporting the included emoji.
This is a follow-up question to How do I remove emoji from string.
I want to build a regular expression that matches all emoji that can be entered in Mac OS X / iOS.
The obvious Unicode blocks cover most, but not all of these emoji:
- U+1F300..U+1F5FF Miscellaneous Symbols And Pictographs
- U+1F600..U+1F64F Emoticons
- U+1F650..U+1F67F Ornamental Dingbats
- U+1F680..U+1F6FF Transport and Map Symbols
Wikipedia provides a compiled list of all the symbols available in Apple Color Emoji on OS X Mountain Lion and iOS 6, which looks like a good starting point: (slightly updated)
people = '😄😃😀😊☺️😉😍😘😚😗😙😜😝😛😳😁😔😌😒😞😣😢😂😭😪😥😰😅😓😩😫😨😱😠😡😤😖😆😋😷😎😴😵😲😟😦😧😈👿😮😬😐😕😯😶😇😏😑👲👳👮👷💂👶👦👧👨👩👴👵👱👼👸😺😸😻😽😼🙀😿😹😾👹👺🙈🙉🙊💀👽💩🔥✨🌟💫💥💢💦💧💤💨👂👀👃👅👄👍👎👌👊✊✌👋✋👐👆👇👉👈🙌🙏☝👏💪🚶🏃💃👫👪👬👭💏💑👯🙆🙅💁🙋💆💇💅👰🙎🙍🙇🎩👑👒👟👞👡👠👢👕👔👚👗🎽👖👘👙💼👜👝👛👓🎀🌂💄💛💙💜💚❤💔💗💓💕💖💞💘💌💋💍💎👤👥💬👣💭'
nature = '🐶🐺🐱🐭🐹🐰🐸🐯🐨🐻🐷🐽🐮🐗🐵🐒🐴🐑🐘🐼🐧🐦🐤🐥🐣🐔🐍🐢🐛🐝🐜🐞🐌🐙🐚🐠🐟🐬🐳🐋🐄🐏🐀🐃🐅🐇🐉🐎🐐🐓🐕🐖🐁🐂🐲🐡🐊🐫🐪🐆🐈🐩🐾💐🌸🌷🍀🌹🌻🌺🍁🍃🍂🌿🌾🍄🌵🌴🌲🌳🌰🌱🌼🌐🌞🌝🌚🌑🌒🌓🌔🌕🌖🌗🌘🌜🌛🌙🌍🌎🌏🌋🌌🌠⭐☀⛅☁⚡☔❄⛄🌀🌁🌈🌊'
objects = '🎍💝🎎🎒🎓🎏🎆🎇🎐🎑🎃👻🎅🎄🎁🎋🎉🎊🎈🎌🔮🎥📷📹📼💿📀💽💾💻📱☎📞📟📠📡📺📻🔊🔉🔈🔇🔔🔕📢📣⏳⌛⏰⌚🔓🔒🔏🔐🔑🔎💡🔦🔆🔅🔌🔋🔍🛁🛀🚿🚽🔧🔩🔨🚪🚬💣🔫🔪💊💉💰💴💵💷💶💳💸📲📧📥📤✉📩📨📯📫📪📬📭📮📦📝📄📃📑📊📈📉📜📋📅📆📇📁📂✂📌📎✒✏📏📐📕📗📘📙📓📔📒📚📖🔖📛🔬🔭📰🎨🎬🎤🎧🎼🎵🎶🎹🎻🎺🎷🎸👾🎮🃏🎴🀄🎲🎯🏈🏀⚽⚾🎾🎱🏉🎳⛳🚵🚴🏁🏇🏆🎿🏂🏊🏄🎣☕🍵🍶🍼🍺🍻🍸🍹🍷🍴🍕🍔🍟🍗🍖🍝🍛🍤🍱🍣🍥🍙🍘🍚🍜🍲🍢🍡🍳🍞🍩🍮🍦🍨🍧🎂🍰🍪🍫🍬🍭🍯🍎🍏🍊🍋🍒🍇🍉🍓🍑🍈🍌🍐🍍🍠🍆🍅🌽'
places = '🏠🏡🏫🏢🏣🏥🏦🏪🏩🏨💒⛪🏬🏤🌇🌆🏯🏰⛺🏭🗼🗾🗻🌄🌅🌃🗽🌉🎠🎡⛲🎢🚢⛵🚤🚣⚓🚀✈💺🚁🚂🚊🚉🚞🚆🚄🚅🚈🚇🚝🚋🚃🚎🚌🚍🚙🚘🚗🚕🚖🚛🚚🚨🚓🚔🚒🚑🚐🚲🚡🚟🚠🚜💈🚏🎫🚦🚥⚠🚧🔰⛽🏮🎰♨🗿🎪🎭📍🚩🇯🇵🇰🇷🇩🇪🇨🇳🇺🇸🇫🇷🇪🇸🇮🇹🇷🇺🇬🇧'
symbols = '1️⃣2️⃣3️⃣4️⃣5️⃣6️⃣7️⃣8️⃣9️⃣0️⃣🔟🔢#️⃣🔣⬆️⬇️⬅️➡️🔠🔡🔤↗️↖️↘️↙️↔️↕️🔄◀️▶️🔼🔽↩️↪️ℹ️⏪⏩⏫⏬⤵️⤴️🆗🔀🔁🔂🆕🆙🆒🆓🆖📶🎦🈁🈯🈳🈵🈴🈲🉐🈹🈺🈶🈚🚻🚹🚺🚼🚾🚰🚮🅿️♿️🚭🈷🈸🈂Ⓜ️🛂🛄🛅🛃🉑㊙️㊗️🆑🆘🆔🚫🔞📵🚯🚱🚳🚷🚸⛔✳️❇️❎✅✴️💟🆚📳📴🅰🅱🆎🅾💠➿♻️♈️♉️♊️♋️♌️♍️♎️♏️♐️♑️♒️♓️⛎🔯🏧💹💲💱©️®️™️❌‼️⁉️❗❓❕❔⭕🔝🔚🔙🔛🔜🔃🕛🕧🕐🕜🕑🕝🕒🕞🕓🕟🕔🕠🕕🕖🕗🕘🕙🕚🕡🕢🕣🕤🕥🕦✖️➕➖➗♠♥♣♦💮💯✔☑🔘🔗➰〰〽️🔱◼️◻️◾️◽️▪️▫️🔺🔲🔳⚫️⚪️🔴🔵🔻⬜️⬛️🔶🔷🔸🔹'
emoji = people + nature + objects + places + symbols # all emoji combined
Most characters have a single code point and converting these would be easy:
- 😀 U+1F600 (Grinning Face)
But some characters are "encoded using two Unicode values":
- ☺️ U+263A U+FE0F (White Smiling Face, Variation Selector 16)
- 🇯🇵 U+1F1EF U+1F1F5 (Regional Indicator Symbol Letter J / Regional Indicator Symbol Letter P)
- ⬛️ U+2B1B U+FE0F (Black Large Square / Variation Selector 16)
And some even have 3 codepoints:
️⃣ U+0023 U+FE0F U+20E3 (Number Sign / Variation Selector 16 / Combining Enclosing Keycap)
(Variation Selector 16 means "emoji style")
How can I split this list into characters (without splitting combined characters), find their code point(s) and finally build a regular expression matching them?
The regex doesn't have to respect "missing" characters within larger blocks, i.e. it's okay if the 4 Unicode blocks mentioned above are entirely covered.
(I'm going to answer this myself if I don't get any answers, but maybe there's an easy solution)
回答1:
The upcoming Unicode Emoji data files would help with this. At the moment these are still drafts, but they might still help you out.
By parsing http://www.unicode.org/Public/emoji/1.0/emoji-data.txt you could get quite easily get a list of all emoji in the Unicode standard. (Note that some of these emoji consist of multiple code points.) Once you have such a list, it’s trivial to turn it into a regular expression.
Here’s a JavaScript version: https://github.com/mathiasbynens/emoji-regex/blob/master/index.js And here’s the script that generates it based on the data from emoji-data.txt: https://github.com/mathiasbynens/emoji-regex/blob/master/scripts/generate-regex.js
回答2:
This regex matches all 845 emoji, taken from Emoji unicode characters for use on the web:
[\u{203C}\u{2049}\u{20E3}\u{2122}\u{2139}\u{2194}-\u{2199}\u{21A9}-\u{21AA}\u{231A}-\u{231B}\u{23E9}-\u{23EC}\u{23F0}\u{23F3}\u{24C2}\u{25AA}-\u{25AB}\u{25B6}\u{25C0}\u{25FB}-\u{25FE}\u{2600}-\u{2601}\u{260E}\u{2611}\u{2614}-\u{2615}\u{261D}\u{263A}\u{2648}-\u{2653}\u{2660}\u{2663}\u{2665}-\u{2666}\u{2668}\u{267B}\u{267F}\u{2693}\u{26A0}-\u{26A1}\u{26AA}-\u{26AB}\u{26BD}-\u{26BE}\u{26C4}-\u{26C5}\u{26CE}\u{26D4}\u{26EA}\u{26F2}-\u{26F3}\u{26F5}\u{26FA}\u{26FD}\u{2702}\u{2705}\u{2708}-\u{270C}\u{270F}\u{2712}\u{2714}\u{2716}\u{2728}\u{2733}-\u{2734}\u{2744}\u{2747}\u{274C}\u{274E}\u{2753}-\u{2755}\u{2757}\u{2764}\u{2795}-\u{2797}\u{27A1}\u{27B0}\u{2934}-\u{2935}\u{2B05}-\u{2B07}\u{2B1B}-\u{2B1C}\u{2B50}\u{2B55}\u{3030}\u{303D}\u{3297}\u{3299}\u{1F004}\u{1F0CF}\u{1F170}-\u{1F171}\u{1F17E}-\u{1F17F}\u{1F18E}\u{1F191}-\u{1F19A}\u{1F1E7}-\u{1F1EC}\u{1F1EE}-\u{1F1F0}\u{1F1F3}\u{1F1F5}\u{1F1F7}-\u{1F1FA}\u{1F201}-\u{1F202}\u{1F21A}\u{1F22F}\u{1F232}-\u{1F23A}\u{1F250}-\u{1F251}\u{1F300}-\u{1F320}\u{1F330}-\u{1F335}\u{1F337}-\u{1F37C}\u{1F380}-\u{1F393}\u{1F3A0}-\u{1F3C4}\u{1F3C6}-\u{1F3CA}\u{1F3E0}-\u{1F3F0}\u{1F400}-\u{1F43E}\u{1F440}\u{1F442}-\u{1F4F7}\u{1F4F9}-\u{1F4FC}\u{1F500}-\u{1F507}\u{1F509}-\u{1F53D}\u{1F550}-\u{1F567}\u{1F5FB}-\u{1F640}\u{1F645}-\u{1F64F}\u{1F680}-\u{1F68A}]
Examples can be found here: https://stackoverflow.com/a/29115920/1911674
EDIT: I udpated the regex to exclude ASCII numbers and symbols. See comments from How do I remove emoji from string for details.
来源：https://stackoverflow.com/questions/24695159/regular-expression-matching-emoji-in-mac-os-x-ios