1ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka/* 2ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * Copyright (C) 2016 The Android Open Source Project 3ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * 4ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * Licensed under the Apache License, Version 2.0 (the "License"); 5ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * you may not use this file except in compliance with the License. 6ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * You may obtain a copy of the License at 7ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * 8ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * http://www.apache.org/licenses/LICENSE-2.0 9ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * 10ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * Unless required by applicable law or agreed to in writing, software 11ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * distributed under the License is distributed on an "AS IS" BASIS, 12ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * See the License for the specific language governing permissions and 14ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * limitations under the License. 15ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka */ 16ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 17ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonakapackage android.text; 18ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 191bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournaderimport android.icu.lang.UCharacter; 201bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournaderimport android.icu.lang.UProperty; 21ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 22ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka/** 23ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * An utility class for Emoji. 24ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka * @hide 25ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka */ 26ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonakapublic class Emoji { 27ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka public static int COMBINING_ENCLOSING_KEYCAP = 0x20E3; 28ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 29ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka public static int ZERO_WIDTH_JOINER = 0x200D; 30ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 31ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka public static int VARIATION_SELECTOR_16 = 0xFE0F; 32ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 33d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka public static int CANCEL_TAG = 0xE007F; 34d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka 351bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader /** 361bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader * Returns true if the given code point is regional indicator symbol. 371bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader */ 381bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader public static boolean isRegionalIndicatorSymbol(int codePoint) { 391bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader return 0x1F1E6 <= codePoint && codePoint <= 0x1F1FF; 40ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka } 41ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 421bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader /** 431bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader * Returns true if the given code point is emoji modifier. 441bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader */ 451bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader public static boolean isEmojiModifier(int codePoint) { 461bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER); 47ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka } 48ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 49ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka // Returns true if the given code point is emoji modifier base. 50ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka public static boolean isEmojiModifierBase(int codePoint) { 511bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // These two characters were removed from Emoji_Modifier_Base in Emoji 4.0, but we need to 521bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // keep them as emoji modifier bases since there are fonts and user-generated text out there 531bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // that treats these as potential emoji bases. 541bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader if (codePoint == 0x1F91D || codePoint == 0x1F93C) { 551bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader return true; 561bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader } 571bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // Emoji Modifier Base characters new in Unicode emoji 5.0. 581bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt 591bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0. 601bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader if (codePoint == 0x1F91F 611bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || (0x1F931 <= codePoint && codePoint <= 0x1F932) 621bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || (0x1F9D1 <= codePoint && codePoint <= 0x1F9DD)) { 631bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader return true; 641bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader } 651bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER_BASE); 66ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka } 67ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 68ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader /** 69ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader * Returns true if the character is a new emoji still not supported in our version of ICU. 70ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader */ 71ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader public static boolean isNewEmoji(int codePoint) { 721bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // Emoji characters new in Unicode emoji 5.0. 731bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt 741bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader // TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0. 75ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader if (codePoint < 0x1F6F7 || codePoint > 0x1F9E6) { 76ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader // Optimization for characters outside the new emoji range. 77ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader return false; 78ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader } 79ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader return (0x1F6F7 <= codePoint && codePoint <= 0x1F6F8) 801bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || codePoint == 0x1F91F 811bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || (0x1F928 <= codePoint && codePoint <= 0x1F92F) 821bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || (0x1F931 <= codePoint && codePoint <= 0x1F932) 831bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || codePoint == 0x1F94C 841bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || (0x1F95F <= codePoint && codePoint <= 0x1F96B) 851bf3ee56f02cf0f5746f3cf5423da3b48bce32cfRoozbeh Pournader || (0x1F992 <= codePoint && codePoint <= 0x1F997) 86ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader || (0x1F9D0 <= codePoint && codePoint <= 0x1F9E6); 87ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader } 88ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader 89ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader /** 90ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader * Returns true if the character has Emoji property. 91ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader */ 92ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader public static boolean isEmoji(int codePoint) { 93ce93f31035169fd81096cfc84fce63881ca79315Roozbeh Pournader return isNewEmoji(codePoint) || UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI); 94ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka } 95ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka 96ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka // Returns true if the character can be a base character of COMBINING ENCLOSING KEYCAP. 97ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka public static boolean isKeycapBase(int codePoint) { 98ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka return ('0' <= codePoint && codePoint <= '9') || codePoint == '#' || codePoint == '*'; 99ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka } 100d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka 101d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka /** 102d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka * Returns true if the character can be a part of tag_spec in emoji tag sequence. 103d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka * 104d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka * Note that 0xE007F (CANCEL TAG) is not included. 105d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka */ 106d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka public static boolean isTagSpecChar(int codePoint) { 107d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka return 0xE0020 <= codePoint && codePoint <= 0xE007E; 108d5eff80a7721123f2170ff9a983db9f06535d5b4Seigo Nonaka } 109ff3bfd5a79a95dcfccd1b8ad6c08c715ce6fa0e3Seigo Nonaka} 110