2021-09-20 21:30:23 +02:00
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//
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2022-01-01 01:35:39 +01:00
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
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2021-09-20 21:30:23 +02:00
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/emoji.h"
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2022-01-13 21:43:22 +01:00
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#include "td/utils/base64.h"
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2022-03-11 19:38:48 +01:00
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#include "td/utils/FlatHashSet.h"
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2022-01-13 21:43:22 +01:00
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#include "td/utils/Gzip.h"
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2021-09-21 05:32:34 +02:00
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2021-09-20 21:30:23 +02:00
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namespace td {
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bool is_emoji(Slice str) {
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2022-01-14 14:30:50 +01:00
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constexpr size_t MAX_EMOJI_LENGTH = 35;
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2022-03-11 19:38:48 +01:00
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static const FlatHashSet<Slice, SliceHash> emojis = [max_emoji_length = MAX_EMOJI_LENGTH] {
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2022-01-31 18:20:31 +01:00
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#if TD_HAVE_ZLIB
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2022-01-13 21:43:22 +01:00
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Slice packed_emojis(
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"eJyNnety27i2rV8lVfvf-XXul7frVmfZ6cS6kKJskrLj7tUUaUmOI1uObcUEWLUfJecBdledFzgaJIfJiUkyqyqAJ4wxJzE_QABF2fGPs_"
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"jdj7Plux_T9bFsjmV7LLfHsjuW_bsfF-ZY7LsfYXAsi3c_og_H8vuxfDyWT8dydizjY5kcy_RYZsfiHYt_LPNjKd79iI9f4z-P5Rg_"
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"PsaPjzHjY8zl-2P5x7EcfZfH-Mtj__LhWI7XXX47lu_HctReHjWXx-tdHq93efPux9XxmldHn6tj3Kuj39VxXFcX7358Pn79fH4ssI_j_"
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"3y89u0xt9vLdz--HMf1ZfHu7-tf3h-r36bH6mSCykPlo5qjClBBd3KO6gJViCpCFR-rD7-iKq2vqB5Q7VE9ovqG6gnVC6oDqu_"
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"H6vcZKlzt7BdUiHI2QvUbKozq7B-oTlCdovqA6ndUH1F9QnWGaowKoz9DHmeIfFZGRh5nyOMMeZwhjzPkcYY8zpDHGfI4w-"
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"iPs36sLlFdofqM6hrVH6i-oLpDhSzPdqjuUSHfM-R7hnzPkO_ZMyrke4Z8z5Dv2SuqHJVBZVEVx2qM9MdIf4z0x0h_jPTHSH-M9MdIf4z0x0h_"
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"jPTHSH-M9MdIf4z0x0h_jPTHSH-M9MdIf4z0x0h_jPTHSH-M9MdIf4z0x0h_jPTHSH-M9MdIf4z0x3-i-"
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"ieqv1AlqFaoUlQZqhtUa1QbVFtUt6iAbgx0Y6AbA90Y6MZANwa6MdCNgW6MpTIGvzH4jcFvDH5j8BuD3xjoxkA3AboJ0E2AbgJ0E6CbAN0E6CZ"
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"ANwG6CdBNgG4CdBOgmwDdBOgmQDcBugnQTYBuAnQTpD9B-hOkP0H6E6Q_QfoTpD9B-hOkP0H6E6Q_QfoTpD9B-hOkP0H6E6Q_QfoTpD9B-"
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"hOkP0H6E6Q_QfoTpD9B-hOkP0H6E6Q_wfKZgMEEDKZgMAWDKRhMwWAKBlMwmILBFAymYDAFgykYTJHvFPlOke8U-U6R7xT5TpHvFPlOke8U-"
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"U6R7xT5TpHvFPlOke8U-U6R7xT5TpHvFPlOke8U-"
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"U6R4BQZTZHRFBlNkdEUGU2R0RQZTZHRDBnNkNEMGc2Q0QwZzZDRDBnNkNEMGc2Q0QwZzTCrM8zqDLM6w6zOkOUMWc6Q5QxZzpDlDC-"
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"IGV4QM7wgZnhBzPCCmOEFMcMLYoYXxAwviBleEDO8IGZ4QcxAaAZCMxCagdAMhGYgNAOhGQjNQGgGQjMQmoHQDIRmIDQDoRkIzUBohhUxw4qYY"
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"UXMAGyGFTHDiphhRczAbwZ-M_Cbgd8M_GbgNwM_D-"
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"g8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8"
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"UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9Q8UPNAzQM1D9S8khpWnQ90PladD34--Png54OfD34--"
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"Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--"
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"Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--Png54OfD34--M3Bbw5-c_Cbg98c_ObgNwe_"
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"OfjNwW8OfnPwm4PfHPzm4DcHvzn4zcFvDn5z8JuD3xz85uA3B785-M3Bbw5-c_Cbg98c_ObgNwe_"
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"OfjNwW8OfnPwm4PfHPzm4DcHvzn4zcFvDn5z8JuD3xz85uA3B785-M3Bbw5-c_Cbg98c_ObgNwe_"
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"OfjNwW8OfnPwm4PfHPzmoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWg"
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"BqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWgBqAagFoBaAWoBVt0D6C6S_"
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"QPoLpL9A5gtkvkDmC2S-QOYLZL5A5gtkvkDmC2S-QOYLZL5A5gtkvkDmC2S-QOYLZL5A5gtkvkDmC2S-QOYLZL7A-"
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"M5xjXNc4xySCwz3AsO9wHAv8CK5wHSHmO4Q0x1iukNMd4jpDjHdIaY7xHSHmO4Q0x1iukPkGyLfEPmGyDfEdIdIOkTSIZIOkXSIpEMMKMSAQiQ"
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"dIukQSYdIOkTSIZIOkXSIpEMkHSLpEEmHSDpE0iEyCpF0iKRDJB1iukNMd4jpDjHdIaY7xHSHmO4Q0x1iukNMd4jpDjHdIaY7xHSHmO4Q0x1iu"
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"kNMdwicIfiF4BeCXwh-IfhF4BeBXwR-EfhF4BeBXwR-EfhF4BeBXwR-EfhF4BeBXwR-"
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"EfjFiBcjXox4MeLFiBcjXox4MeLFiBcjXox4MeLFiBcjXox4cRkP8xFjPmLMR4z5iDEfMeYjxnzEmI8Y8xFjPmLMR4z5iDEfMeYjxnzEmI8Y8x"
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"FjPmLMR4z5iDEfMeYjxnzEmI8Y8xFjPmLMR4z5iDEfMeYjxnzEmI8Y8xFjPmLMR4z5iDEfMeYjxnzEmI8Y8xFjPmLMR4z5iDEfMeYjxnzEmI8l"
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"-C3Bbwl-S_Bbgt8S_JYgtASSJZAsgWQJEEuAWALEEvkuke8S-"
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"S4x8CUGvsSolhjVEqNaYlRLjGqJUS0xqiVGtcSoroHpGpiugekamK6B6RqYroHpGpiugekamK6B6RpXuwaSBCNNMJcJ5jLBXCYYeIKBJxh4grl"
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"MMJcJUkiQQoIUEsxlgrlMMJcJ5jLBXCbILUFuCXJLMMgEg0wwyASDTDDIBINMMMgEg0wwyASDTDDIBINMgCTBXCaYywRzmZQDx1wmmMsEc5mAW"
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"gJqCagloJaAWgJqCaglAJZgGhNMY4JpXGEaV5jGFaZxhWlcYRpXmMYVXgErvAJWeAWs8ApY4RWwArUVqK1AbQVqK1BbgdoK1FagtgK1FaitQG0"
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"FaitQW4HaCtRWoLYCtRWorUBtBWorUFuB2grUVqC2ArUVqK1AbQVqK1BbgdoK1FagtgK1FaitQG0FaitQW4HaCtRWoLYCtRWorUBtBWorUFuB2"
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"grUVlhrK6BbAd0K6FZAlwJdCnQp0KVAlwJdCnQpdpAU_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_"
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"FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_FLwS8EvBb8U_"
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"DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_"
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"DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_DLwy8AvA78M_NaIt0a8NeKtEW-"
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"NeGsEWCPAGgHWCLBGgA2Ib0B8A-IbEN-A-AbENyC-"
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"AcQNIG4AcQOIG0DcAOIGEDeAuAHEDSBuAHEDiBtA3ADiBhA3gLgBxA0gbgBxA4gbQNwA4gYQN4C4AcQNIG4AcQOIG0DcIMsNstwgyw2y3CDLDa"
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"htQG0DahskvUHSGyS9RapbpLpFqlukukWqW6S6RZZbZLlFlltkuUWWW2S5RZZbZLlFlltkuUUeW-SxRR5b5LFFHlvksUUeW-"
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"SxxXC3GO4Ww91iuFsMd4vhbp_e_fv6-O8_Xqbv_v3u-A_Gj19ylNL89XeU0nz_"
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"T5TKPKCU5kmAUpkLlMo8R6nMC5TKDFEqM0KpzDVKZW5QSvPsBqU0p2WpzC8olXmHUplfUSrzHqUyH1Aq8wWlMg8olfkdpTSP7xOPpTTPNyiVuU"
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"WpzCeU0rz4BaUyX1EqM0cpzeOd9bFU5q8olTlCqczfUCrzPUplTlAq00OpzBClMq9QKvMPlMr8J0pl_oVSmSlKZW5QKvMOpTK_"
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"olTmC0plHlAq8ztKaR5vdY-lMkcolXmNUpl_oFTmXyiVuUKpzBSlMm9QKvMVpTItSmkeb1ePpTIDlMpcoFTmOUplXqBUZoRSmUuUyrxEqcw_"
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"UCozQ6nMHUpl3qOU5vIDSmWWpTI9lMqco1TmGqUydyiVeY9SmY8olfmMUpkvKJV5QCnNyxFKZX5AqczfUSrzDKUyxyiVWZbK9FEqM0CpzHOUyr"
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"xCqcw_USpzj1KZjyilefUepTJPUSrzL5TKTFBK8_OfKKV5vPc7lsr8hlKat_9AqcwTlMo8RYH5f3_ZoVSmQSnNjxcolRmhwPz7-h-"
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"7sqob92VVN2xZ1Y2irKrGh1FZ1Y3nsqoaZ3-"
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"WVd1IyqpurMqqbqRlVTeysqobN2VVN9ZlVTc2ZVU3tmVVN27Lqm48lVXVGJuyqhqT87KqGxdlVTeisqobcVnVjWVZ1Y3PZVU3rsuqakw_"
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"lVXdOCurujEuq7oxKau6EZRV3ViUVd04L6u6cVFWdSMsq7oRlVXdiMuqbizLqm5cllXduCqruvG5rOrGdVnVjX1Z1Y1vZVU3nsuqaszKZ_"
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"v1ovB-LauqMTdlVTUWv5dV3fhYVnXja1nVjV1Z1Y19WdWNx7KqG9_Kqm48lVXdeC6ruvFSVnXjUFZV4_y0rOrGx7KqG5_"
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"Kqm6clVXdGJdV3ZiVVd1YlVXduCmrunFfVnXjoazqRl5WVeNiVFZ147eyqhvvy6pueGVVN_yyqhvzsqobl2VVN67Kqm58Lqu68WdZ1Y2_"
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"yqpu3JRV3fhaVnVjX1Z143tZVY3lp7KqG-OyqhuTsqobVVU3_iiruvFnWdWNf5ZV3firrOpGUlZ1Y1VWdWNdVnVjV1Z1Y19WaPzbj9_-"
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"evdvRwtf_1NZ1Y3_XFZ147-UVd34r2VVN_5bWdWN_15WdeN_lFXd-J9lVTf-V1nVjf9dVnXj_5RV3fj7-"
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"MAxP3DMDwQFw9B4y6Iktmc6e6azZxZ7ZrFnFnsy3HPwew51z6HuOcI9x7PntR6Z6Tde9Buv9Y3X-sZrfSOxbyT2jRf91o6zp_"
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"k_7Ka1zcVL3hXdn00Rt-q2z8H2PhUzUUYdd7bf2_db5_9_8BRjaqUQ");
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static string all_emojis_str = gzdecode(base64url_decode(packed_emojis).ok()).as_slice().str();
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2022-01-14 14:30:50 +01:00
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constexpr size_t EMOJI_COUNT = 4682;
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2022-01-31 18:20:31 +01:00
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#else
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string all_emojis_str;
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constexpr size_t EMOJI_COUNT = 0;
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#endif
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2022-03-11 19:38:48 +01:00
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FlatHashSet<Slice, SliceHash> all_emojis;
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2022-01-14 14:30:50 +01:00
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all_emojis.reserve(EMOJI_COUNT);
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2022-01-13 21:43:22 +01:00
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for (size_t i = 0; i < all_emojis_str.size(); i++) {
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CHECK(all_emojis_str[i] != ' ');
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CHECK(all_emojis_str[i + 1] != ' ');
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size_t j = i + 2;
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while (j < all_emojis_str.size() && all_emojis_str[j] != ' ') {
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j++;
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}
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CHECK(j < all_emojis_str.size());
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all_emojis.insert(Slice(&all_emojis_str[i], &all_emojis_str[j]));
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2022-01-31 20:00:00 +01:00
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CHECK(j - i <= max_emoji_length);
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2022-01-13 21:43:22 +01:00
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i = j;
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}
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2022-01-14 14:30:50 +01:00
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CHECK(all_emojis.size() == EMOJI_COUNT);
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2022-01-13 21:43:22 +01:00
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return all_emojis;
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}();
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2022-01-14 14:30:50 +01:00
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if (str.size() > MAX_EMOJI_LENGTH) {
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2021-09-20 21:30:23 +02:00
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return false;
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}
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return emojis.count(str) != 0;
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}
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2021-10-05 15:12:04 +02:00
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int get_fitzpatrick_modifier(Slice emoji) {
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if (emoji.size() < 4 || emoji[emoji.size() - 4] != '\xF0' || emoji[emoji.size() - 3] != '\x9F' ||
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emoji[emoji.size() - 2] != '\x8F') {
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return 0;
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}
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auto c = static_cast<unsigned char>(emoji.back());
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if (c < 0xBB || c > 0xBF) {
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return 0;
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}
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return (c - 0xBB) + 2;
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}
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2021-10-05 22:20:49 +02:00
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Slice remove_fitzpatrick_modifier(Slice emoji) {
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while (get_fitzpatrick_modifier(emoji) != 0) {
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emoji.remove_suffix(4);
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}
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return emoji;
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}
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2022-05-12 17:02:27 +02:00
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string remove_emoji_modifiers(Slice emoji) {
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string result = emoji.str();
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remove_emoji_modifiers_in_place(result);
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return result;
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}
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void remove_emoji_modifiers_in_place(string &emoji) {
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2021-12-22 11:40:20 +01:00
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static const Slice modifiers[] = {u8"\uFE0F" /* variation selector-16 */,
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2021-09-21 05:32:34 +02:00
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u8"\u200D\u2640" /* zero width joiner + female sign */,
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u8"\u200D\u2642" /* zero width joiner + male sign */,
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u8"\U0001F3FB" /* emoji modifier fitzpatrick type-1-2 */,
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u8"\U0001F3FC" /* emoji modifier fitzpatrick type-3 */,
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u8"\U0001F3FD" /* emoji modifier fitzpatrick type-4 */,
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u8"\U0001F3FE" /* emoji modifier fitzpatrick type-5 */,
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u8"\U0001F3FF" /* emoji modifier fitzpatrick type-6 */};
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2022-05-12 17:02:27 +02:00
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|
size_t j = 0;
|
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|
for (size_t i = 0; i < emoji.size();) {
|
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|
bool is_found = false;
|
2021-09-21 05:32:34 +02:00
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|
for (auto &modifier : modifiers) {
|
2022-05-12 17:02:27 +02:00
|
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|
auto length = modifier.size();
|
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|
if (i + length <= emoji.size() && Slice(&emoji[i], length) == modifier) {
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|
// skip modifier
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|
i += length;
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|
is_found = true;
|
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|
|
break;
|
2021-09-21 05:32:34 +02:00
|
|
|
}
|
|
|
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|
}
|
2022-05-12 17:02:27 +02:00
|
|
|
if (!is_found) {
|
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|
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|
emoji[j++] = emoji[i++];
|
|
|
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|
}
|
2021-09-21 05:32:34 +02:00
|
|
|
}
|
2022-05-12 17:02:27 +02:00
|
|
|
emoji.resize(j);
|
2021-09-21 05:32:34 +02:00
|
|
|
}
|
|
|
|
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|
2021-12-22 11:40:20 +01:00
|
|
|
string remove_emoji_selectors(Slice emoji) {
|
|
|
|
|
if (!is_emoji(emoji)) {
|
|
|
|
|
return emoji.str();
|
|
|
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|
}
|
|
|
|
|
string str;
|
|
|
|
|
for (size_t i = 0; i < emoji.size(); i++) {
|
|
|
|
|
if (i + 3 <= emoji.size() && emoji[i] == '\xEF' && emoji[i + 1] == '\xB8' && emoji[i + 2] == '\x8F') {
|
|
|
|
|
// skip \uFE0F
|
|
|
|
|
i += 2;
|
|
|
|
|
} else {
|
|
|
|
|
str += emoji[i];
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
CHECK(is_emoji(str));
|
|
|
|
|
return str;
|
|
|
|
|
}
|
|
|
|
|
|
2021-09-20 21:30:23 +02:00
|
|
|
} // namespace td
|
