Update Emoji.java to use ICU (1bf3ee56) · Commits · e / os / android_frameworks_base

core/java/android/text/Emoji.java

+41 −143

Original line number	Diff line number	Diff line
		@@ -16,147 +16,14 @@

		package android.text;

		import java.util.Arrays;
		import android.icu.lang.UCharacter;
		import android.icu.lang.UProperty;

		/**
		* An utility class for Emoji.
		* @hide
		*/
		public class Emoji {
		// See http://www.unicode.org/Public/emoji/3.0/emoji-data.txt
		// TODO: Generate from external/unicode/emoji-data.txt
		private static int[] EMOJI_LIST = {
		0x0023, 0x002A, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038,
		0x0039, 0x00A9, 0x00AE, 0x203C, 0x2049, 0x2122, 0x2139, 0x2194, 0x2195, 0x2196, 0x2197,
		0x2198, 0x2199, 0x21A9, 0x21AA, 0x231A, 0x231B, 0x2328, 0x23CF, 0x23E9, 0x23EA, 0x23EB,
		0x23EC, 0x23ED, 0x23EE, 0x23EF, 0x23F0, 0x23F1, 0x23F2, 0x23F3, 0x23F8, 0x23F9, 0x23FA,
		0x24C2, 0x25AA, 0x25AB, 0x25B6, 0x25C0, 0x25FB, 0x25FC, 0x25FD, 0x25FE, 0x2600, 0x2601,
		0x2602, 0x2603, 0x2604, 0x260E, 0x2611, 0x2614, 0x2615, 0x2618, 0x261D, 0x2620, 0x2622,
		0x2623, 0x2626, 0x262A, 0x262E, 0x262F, 0x2638, 0x2639, 0x263A, 0x2640, 0x2642, 0x2648,
		0x2649, 0x264A, 0x264B, 0x264C, 0x264D, 0x264E, 0x264F, 0x2650, 0x2651, 0x2652, 0x2653,
		0x2660, 0x2663, 0x2665, 0x2666, 0x2668, 0x267B, 0x267F, 0x2692, 0x2693, 0x2694, 0x2695,
		0x2696, 0x2697, 0x2699, 0x269B, 0x269C, 0x26A0, 0x26A1, 0x26AA, 0x26AB, 0x26B0, 0x26B1,
		0x26BD, 0x26BE, 0x26C4, 0x26C5, 0x26C8, 0x26CE, 0x26CF, 0x26D1, 0x26D3, 0x26D4, 0x26E9,
		0x26EA, 0x26F0, 0x26F1, 0x26F2, 0x26F3, 0x26F4, 0x26F5, 0x26F7, 0x26F8, 0x26F9, 0x26FA,
		0x26FD, 0x2702, 0x2705, 0x2708, 0x2709, 0x270A, 0x270B, 0x270C, 0x270D, 0x270F, 0x2712,
		0x2714, 0x2716, 0x271D, 0x2721, 0x2728, 0x2733, 0x2734, 0x2744, 0x2747, 0x274C, 0x274E,
		0x2753, 0x2754, 0x2755, 0x2757, 0x2763, 0x2764, 0x2795, 0x2796, 0x2797, 0x27A1, 0x27B0,
		0x27BF, 0x2934, 0x2935, 0x2B05, 0x2B06, 0x2B07, 0x2B1B, 0x2B1C, 0x2B50, 0x2B55, 0x3030,
		0x303D, 0x3297, 0x3299, 0x1F004, 0x1F0CF, 0x1F170, 0x1F171, 0x1F17E, 0x1F17F, 0x1F18E,
		0x1F191, 0x1F192, 0x1F193, 0x1F194, 0x1F195, 0x1F196, 0x1F197, 0x1F198, 0x1F199, 0x1F19A,
		0x1F1E6, 0x1F1E7, 0x1F1E8, 0x1F1E9, 0x1F1EA, 0x1F1EB, 0x1F1EC, 0x1F1ED, 0x1F1EE, 0x1F1EF,
		0x1F1F0, 0x1F1F1, 0x1F1F2, 0x1F1F3, 0x1F1F4, 0x1F1F5, 0x1F1F6, 0x1F1F7, 0x1F1F8, 0x1F1F9,
		0x1F1FA, 0x1F1FB, 0x1F1FC, 0x1F1FD, 0x1F1FE, 0x1F1FF, 0x1F201, 0x1F202, 0x1F21A, 0x1F22F,
		0x1F232, 0x1F233, 0x1F234, 0x1F235, 0x1F236, 0x1F237, 0x1F238, 0x1F239, 0x1F23A, 0x1F250,
		0x1F251, 0x1F300, 0x1F301, 0x1F302, 0x1F303, 0x1F304, 0x1F305, 0x1F306, 0x1F307, 0x1F308,
		0x1F309, 0x1F30A, 0x1F30B, 0x1F30C, 0x1F30D, 0x1F30E, 0x1F30F, 0x1F310, 0x1F311, 0x1F312,
		0x1F313, 0x1F314, 0x1F315, 0x1F316, 0x1F317, 0x1F318, 0x1F319, 0x1F31A, 0x1F31B, 0x1F31C,
		0x1F31D, 0x1F31E, 0x1F31F, 0x1F320, 0x1F321, 0x1F324, 0x1F325, 0x1F326, 0x1F327, 0x1F328,
		0x1F329, 0x1F32A, 0x1F32B, 0x1F32C, 0x1F32D, 0x1F32E, 0x1F32F, 0x1F330, 0x1F331, 0x1F332,
		0x1F333, 0x1F334, 0x1F335, 0x1F336, 0x1F337, 0x1F338, 0x1F339, 0x1F33A, 0x1F33B, 0x1F33C,
		0x1F33D, 0x1F33E, 0x1F33F, 0x1F340, 0x1F341, 0x1F342, 0x1F343, 0x1F344, 0x1F345, 0x1F346,
		0x1F347, 0x1F348, 0x1F349, 0x1F34A, 0x1F34B, 0x1F34C, 0x1F34D, 0x1F34E, 0x1F34F, 0x1F350,
		0x1F351, 0x1F352, 0x1F353, 0x1F354, 0x1F355, 0x1F356, 0x1F357, 0x1F358, 0x1F359, 0x1F35A,
		0x1F35B, 0x1F35C, 0x1F35D, 0x1F35E, 0x1F35F, 0x1F360, 0x1F361, 0x1F362, 0x1F363, 0x1F364,
		0x1F365, 0x1F366, 0x1F367, 0x1F368, 0x1F369, 0x1F36A, 0x1F36B, 0x1F36C, 0x1F36D, 0x1F36E,
		0x1F36F, 0x1F370, 0x1F371, 0x1F372, 0x1F373, 0x1F374, 0x1F375, 0x1F376, 0x1F377, 0x1F378,
		0x1F379, 0x1F37A, 0x1F37B, 0x1F37C, 0x1F37D, 0x1F37E, 0x1F37F, 0x1F380, 0x1F381, 0x1F382,
		0x1F383, 0x1F384, 0x1F385, 0x1F386, 0x1F387, 0x1F388, 0x1F389, 0x1F38A, 0x1F38B, 0x1F38C,
		0x1F38D, 0x1F38E, 0x1F38F, 0x1F390, 0x1F391, 0x1F392, 0x1F393, 0x1F396, 0x1F397, 0x1F399,
		0x1F39A, 0x1F39B, 0x1F39E, 0x1F39F, 0x1F3A0, 0x1F3A1, 0x1F3A2, 0x1F3A3, 0x1F3A4, 0x1F3A5,
		0x1F3A6, 0x1F3A7, 0x1F3A8, 0x1F3A9, 0x1F3AA, 0x1F3AB, 0x1F3AC, 0x1F3AD, 0x1F3AE, 0x1F3AF,
		0x1F3B0, 0x1F3B1, 0x1F3B2, 0x1F3B3, 0x1F3B4, 0x1F3B5, 0x1F3B6, 0x1F3B7, 0x1F3B8, 0x1F3B9,
		0x1F3BA, 0x1F3BB, 0x1F3BC, 0x1F3BD, 0x1F3BE, 0x1F3BF, 0x1F3C0, 0x1F3C1, 0x1F3C2, 0x1F3C3,
		0x1F3C4, 0x1F3C5, 0x1F3C6, 0x1F3C7, 0x1F3C8, 0x1F3C9, 0x1F3CA, 0x1F3CB, 0x1F3CC, 0x1F3CD,
		0x1F3CE, 0x1F3CF, 0x1F3D0, 0x1F3D1, 0x1F3D2, 0x1F3D3, 0x1F3D4, 0x1F3D5, 0x1F3D6, 0x1F3D7,
		0x1F3D8, 0x1F3D9, 0x1F3DA, 0x1F3DB, 0x1F3DC, 0x1F3DD, 0x1F3DE, 0x1F3DF, 0x1F3E0, 0x1F3E1,
		0x1F3E2, 0x1F3E3, 0x1F3E4, 0x1F3E5, 0x1F3E6, 0x1F3E7, 0x1F3E8, 0x1F3E9, 0x1F3EA, 0x1F3EB,
		0x1F3EC, 0x1F3ED, 0x1F3EE, 0x1F3EF, 0x1F3F0, 0x1F3F3, 0x1F3F4, 0x1F3F5, 0x1F3F7, 0x1F3F8,
		0x1F3F9, 0x1F3FA, 0x1F3FB, 0x1F3FC, 0x1F3FD, 0x1F3FE, 0x1F3FF, 0x1F400, 0x1F401, 0x1F402,
		0x1F403, 0x1F404, 0x1F405, 0x1F406, 0x1F407, 0x1F408, 0x1F409, 0x1F40A, 0x1F40B, 0x1F40C,
		0x1F40D, 0x1F40E, 0x1F40F, 0x1F410, 0x1F411, 0x1F412, 0x1F413, 0x1F414, 0x1F415, 0x1F416,
		0x1F417, 0x1F418, 0x1F419, 0x1F41A, 0x1F41B, 0x1F41C, 0x1F41D, 0x1F41E, 0x1F41F, 0x1F420,
		0x1F421, 0x1F422, 0x1F423, 0x1F424, 0x1F425, 0x1F426, 0x1F427, 0x1F428, 0x1F429, 0x1F42A,
		0x1F42B, 0x1F42C, 0x1F42D, 0x1F42E, 0x1F42F, 0x1F430, 0x1F431, 0x1F432, 0x1F433, 0x1F434,
		0x1F435, 0x1F436, 0x1F437, 0x1F438, 0x1F439, 0x1F43A, 0x1F43B, 0x1F43C, 0x1F43D, 0x1F43E,
		0x1F43F, 0x1F440, 0x1F441, 0x1F442, 0x1F443, 0x1F444, 0x1F445, 0x1F446, 0x1F447, 0x1F448,
		0x1F449, 0x1F44A, 0x1F44B, 0x1F44C, 0x1F44D, 0x1F44E, 0x1F44F, 0x1F450, 0x1F451, 0x1F452,
		0x1F453, 0x1F454, 0x1F455, 0x1F456, 0x1F457, 0x1F458, 0x1F459, 0x1F45A, 0x1F45B, 0x1F45C,
		0x1F45D, 0x1F45E, 0x1F45F, 0x1F460, 0x1F461, 0x1F462, 0x1F463, 0x1F464, 0x1F465, 0x1F466,
		0x1F467, 0x1F468, 0x1F469, 0x1F46A, 0x1F46B, 0x1F46C, 0x1F46D, 0x1F46E, 0x1F46F, 0x1F470,
		0x1F471, 0x1F472, 0x1F473, 0x1F474, 0x1F475, 0x1F476, 0x1F477, 0x1F478, 0x1F479, 0x1F47A,
		0x1F47B, 0x1F47C, 0x1F47D, 0x1F47E, 0x1F47F, 0x1F480, 0x1F481, 0x1F482, 0x1F483, 0x1F484,
		0x1F485, 0x1F486, 0x1F487, 0x1F488, 0x1F489, 0x1F48A, 0x1F48B, 0x1F48C, 0x1F48D, 0x1F48E,
		0x1F48F, 0x1F490, 0x1F491, 0x1F492, 0x1F493, 0x1F494, 0x1F495, 0x1F496, 0x1F497, 0x1F498,
		0x1F499, 0x1F49A, 0x1F49B, 0x1F49C, 0x1F49D, 0x1F49E, 0x1F49F, 0x1F4A0, 0x1F4A1, 0x1F4A2,
		0x1F4A3, 0x1F4A4, 0x1F4A5, 0x1F4A6, 0x1F4A7, 0x1F4A8, 0x1F4A9, 0x1F4AA, 0x1F4AB, 0x1F4AC,
		0x1F4AD, 0x1F4AE, 0x1F4AF, 0x1F4B0, 0x1F4B1, 0x1F4B2, 0x1F4B3, 0x1F4B4, 0x1F4B5, 0x1F4B6,
		0x1F4B7, 0x1F4B8, 0x1F4B9, 0x1F4BA, 0x1F4BB, 0x1F4BC, 0x1F4BD, 0x1F4BE, 0x1F4BF, 0x1F4C0,
		0x1F4C1, 0x1F4C2, 0x1F4C3, 0x1F4C4, 0x1F4C5, 0x1F4C6, 0x1F4C7, 0x1F4C8, 0x1F4C9, 0x1F4CA,
		0x1F4CB, 0x1F4CC, 0x1F4CD, 0x1F4CE, 0x1F4CF, 0x1F4D0, 0x1F4D1, 0x1F4D2, 0x1F4D3, 0x1F4D4,
		0x1F4D5, 0x1F4D6, 0x1F4D7, 0x1F4D8, 0x1F4D9, 0x1F4DA, 0x1F4DB, 0x1F4DC, 0x1F4DD, 0x1F4DE,
		0x1F4DF, 0x1F4E0, 0x1F4E1, 0x1F4E2, 0x1F4E3, 0x1F4E4, 0x1F4E5, 0x1F4E6, 0x1F4E7, 0x1F4E8,
		0x1F4E9, 0x1F4EA, 0x1F4EB, 0x1F4EC, 0x1F4ED, 0x1F4EE, 0x1F4EF, 0x1F4F0, 0x1F4F1, 0x1F4F2,
		0x1F4F3, 0x1F4F4, 0x1F4F5, 0x1F4F6, 0x1F4F7, 0x1F4F8, 0x1F4F9, 0x1F4FA, 0x1F4FB, 0x1F4FC,
		0x1F4FD, 0x1F4FF, 0x1F500, 0x1F501, 0x1F502, 0x1F503, 0x1F504, 0x1F505, 0x1F506, 0x1F507,
		0x1F508, 0x1F509, 0x1F50A, 0x1F50B, 0x1F50C, 0x1F50D, 0x1F50E, 0x1F50F, 0x1F510, 0x1F511,
		0x1F512, 0x1F513, 0x1F514, 0x1F515, 0x1F516, 0x1F517, 0x1F518, 0x1F519, 0x1F51A, 0x1F51B,
		0x1F51C, 0x1F51D, 0x1F51E, 0x1F51F, 0x1F520, 0x1F521, 0x1F522, 0x1F523, 0x1F524, 0x1F525,
		0x1F526, 0x1F527, 0x1F528, 0x1F529, 0x1F52A, 0x1F52B, 0x1F52C, 0x1F52D, 0x1F52E, 0x1F52F,
		0x1F530, 0x1F531, 0x1F532, 0x1F533, 0x1F534, 0x1F535, 0x1F536, 0x1F537, 0x1F538, 0x1F539,
		0x1F53A, 0x1F53B, 0x1F53C, 0x1F53D, 0x1F549, 0x1F54A, 0x1F54B, 0x1F54C, 0x1F54D, 0x1F54E,
		0x1F550, 0x1F551, 0x1F552, 0x1F553, 0x1F554, 0x1F555, 0x1F556, 0x1F557, 0x1F558, 0x1F559,
		0x1F55A, 0x1F55B, 0x1F55C, 0x1F55D, 0x1F55E, 0x1F55F, 0x1F560, 0x1F561, 0x1F562, 0x1F563,
		0x1F564, 0x1F565, 0x1F566, 0x1F567, 0x1F56F, 0x1F570, 0x1F573, 0x1F574, 0x1F575, 0x1F576,
		0x1F577, 0x1F578, 0x1F579, 0x1F57A, 0x1F587, 0x1F58A, 0x1F58B, 0x1F58C, 0x1F58D, 0x1F590,
		0x1F595, 0x1F596, 0x1F5A4, 0x1F5A5, 0x1F5A8, 0x1F5B1, 0x1F5B2, 0x1F5BC, 0x1F5C2, 0x1F5C3,
		0x1F5C4, 0x1F5D1, 0x1F5D2, 0x1F5D3, 0x1F5DC, 0x1F5DD, 0x1F5DE, 0x1F5E1, 0x1F5E3, 0x1F5E8,
		0x1F5EF, 0x1F5F3, 0x1F5FA, 0x1F5FB, 0x1F5FC, 0x1F5FD, 0x1F5FE, 0x1F5FF, 0x1F600, 0x1F601,
		0x1F602, 0x1F603, 0x1F604, 0x1F605, 0x1F606, 0x1F607, 0x1F608, 0x1F609, 0x1F60A, 0x1F60B,
		0x1F60C, 0x1F60D, 0x1F60E, 0x1F60F, 0x1F610, 0x1F611, 0x1F612, 0x1F613, 0x1F614, 0x1F615,
		0x1F616, 0x1F617, 0x1F618, 0x1F619, 0x1F61A, 0x1F61B, 0x1F61C, 0x1F61D, 0x1F61E, 0x1F61F,
		0x1F620, 0x1F621, 0x1F622, 0x1F623, 0x1F624, 0x1F625, 0x1F626, 0x1F627, 0x1F628, 0x1F629,
		0x1F62A, 0x1F62B, 0x1F62C, 0x1F62D, 0x1F62E, 0x1F62F, 0x1F630, 0x1F631, 0x1F632, 0x1F633,
		0x1F634, 0x1F635, 0x1F636, 0x1F637, 0x1F638, 0x1F639, 0x1F63A, 0x1F63B, 0x1F63C, 0x1F63D,
		0x1F63E, 0x1F63F, 0x1F640, 0x1F641, 0x1F642, 0x1F643, 0x1F644, 0x1F645, 0x1F646, 0x1F647,
		0x1F648, 0x1F649, 0x1F64A, 0x1F64B, 0x1F64C, 0x1F64D, 0x1F64E, 0x1F64F, 0x1F680, 0x1F681,
		0x1F682, 0x1F683, 0x1F684, 0x1F685, 0x1F686, 0x1F687, 0x1F688, 0x1F689, 0x1F68A, 0x1F68B,
		0x1F68C, 0x1F68D, 0x1F68E, 0x1F68F, 0x1F690, 0x1F691, 0x1F692, 0x1F693, 0x1F694, 0x1F695,
		0x1F696, 0x1F697, 0x1F698, 0x1F699, 0x1F69A, 0x1F69B, 0x1F69C, 0x1F69D, 0x1F69E, 0x1F69F,
		0x1F6A0, 0x1F6A1, 0x1F6A2, 0x1F6A3, 0x1F6A4, 0x1F6A5, 0x1F6A6, 0x1F6A7, 0x1F6A8, 0x1F6A9,
		0x1F6AA, 0x1F6AB, 0x1F6AC, 0x1F6AD, 0x1F6AE, 0x1F6AF, 0x1F6B0, 0x1F6B1, 0x1F6B2, 0x1F6B3,
		0x1F6B4, 0x1F6B5, 0x1F6B6, 0x1F6B7, 0x1F6B8, 0x1F6B9, 0x1F6BA, 0x1F6BB, 0x1F6BC, 0x1F6BD,
		0x1F6BE, 0x1F6BF, 0x1F6C0, 0x1F6C1, 0x1F6C2, 0x1F6C3, 0x1F6C4, 0x1F6C5, 0x1F6CB, 0x1F6CC,
		0x1F6CD, 0x1F6CE, 0x1F6CF, 0x1F6D0, 0x1F6D1, 0x1F6D2, 0x1F6E0, 0x1F6E1, 0x1F6E2, 0x1F6E3,
		0x1F6E4, 0x1F6E5, 0x1F6E9, 0x1F6EB, 0x1F6EC, 0x1F6F0, 0x1F6F3, 0x1F6F4, 0x1F6F5, 0x1F6F6,
		0x1F910, 0x1F911, 0x1F912, 0x1F913, 0x1F914, 0x1F915, 0x1F916, 0x1F917, 0x1F918, 0x1F919,
		0x1F91A, 0x1F91B, 0x1F91C, 0x1F91D, 0x1F91E, 0x1F920, 0x1F921, 0x1F922, 0x1F923, 0x1F924,
		0x1F925, 0x1F926, 0x1F927, 0x1F930, 0x1F933, 0x1F934, 0x1F935, 0x1F936, 0x1F937, 0x1F938,
		0x1F939, 0x1F93A, 0x1F93C, 0x1F93D, 0x1F93E, 0x1F940, 0x1F941, 0x1F942, 0x1F943, 0x1F944,
		0x1F945, 0x1F947, 0x1F948, 0x1F949, 0x1F94A, 0x1F94B, 0x1F950, 0x1F951, 0x1F952, 0x1F953,
		0x1F954, 0x1F955, 0x1F956, 0x1F957, 0x1F958, 0x1F959, 0x1F95A, 0x1F95B, 0x1F95C, 0x1F95D,
		0x1F95E, 0x1F980, 0x1F981, 0x1F982, 0x1F983, 0x1F984, 0x1F985, 0x1F986, 0x1F987, 0x1F988,
		0x1F989, 0x1F98A, 0x1F98B, 0x1F98C, 0x1F98D, 0x1F98E, 0x1F98F, 0x1F990, 0x1F991, 0x1F9C0
		};

		// See http://www.unicode.org/Public/emoji/3.0/emoji-data.txt
		private static int[] EMOJI_MODIFIER_BASE = {
		0x261D, 0x26F9, 0x270A, 0x270B, 0x270C, 0x270D, 0x1F385, 0x1F3C3, 0x1F3C4, 0x1F3CA,
		0x1F3CB, 0x1F442, 0x1F443, 0x1F446, 0x1F447, 0x1F448, 0x1F449, 0x1F44A, 0x1F44B, 0x1F44C,
		0x1F44D, 0x1F44E, 0x1F44F, 0x1F450, 0x1F466, 0x1F467, 0x1F468, 0x1F469, 0x1F46E, 0x1F470,
		0x1F471, 0x1F472, 0x1F473, 0x1F474, 0x1F475, 0x1F476, 0x1F477, 0x1F478, 0x1F47C, 0x1F481,
		0x1F482, 0x1F483, 0x1F485, 0x1F486, 0x1F487, 0x1F4AA, 0x1F575, 0x1F57A, 0x1F590, 0x1F595,
		0x1F596, 0x1F645, 0x1F646, 0x1F647, 0x1F64B, 0x1F64C, 0x1F64D, 0x1F64E, 0x1F64F, 0x1F6A3,
		0x1F6B4, 0x1F6B5, 0x1F6B6, 0x1F6C0, 0x1F918, 0x1F919, 0x1F91A, 0x1F91B, 0x1F91C, 0x1F91D,
		0x1F91E, 0x1F926, 0x1F930, 0x1F933, 0x1F934, 0x1F935, 0x1F936, 0x1F937, 0x1F938, 0x1F939,
		0x1F93C, 0x1F93D, 0x1F93E
		};

		// See http://www.unicode.org/emoji/charts/emoji-zwj-sequences.html
		private static int[] ZWJ_EMOJI = {
		0x2764, 0x1F441, 0x1F466, 0x1F467, 0x1F468, 0x1F469, 0x1F48B, 0x1F5E8
		};

		public static int COMBINING_ENCLOSING_KEYCAP = 0x20E3;

		public static int ZERO_WIDTH_JOINER = 0x200D;
		@@ -165,24 +32,55 @@ public class Emoji {

		public static int CANCEL_TAG = 0xE007F;

		// Returns true if the given code point is regional indicator symbol.
		public static boolean isRegionalIndicatorSymbol(int codepoint) {
		return 0x1F1E6 <= codepoint && codepoint <= 0x1F1FF;
		/**
		* Returns true if the given code point is regional indicator symbol.
		*/
		public static boolean isRegionalIndicatorSymbol(int codePoint) {
		return 0x1F1E6 <= codePoint && codePoint <= 0x1F1FF;
		}

		// Returns true if the given code point is emoji modifier.
		public static boolean isEmojiModifier(int codepoint) {
		return 0x1F3FB <= codepoint && codepoint <= 0x1F3FF;
		/**
		* Returns true if the given code point is emoji modifier.
		*/
		public static boolean isEmojiModifier(int codePoint) {
		return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER);
		}

		// Returns true if the given code point is emoji modifier base.
		public static boolean isEmojiModifierBase(int codePoint) {
		return Arrays.binarySearch(EMOJI_MODIFIER_BASE, codePoint) >= 0;
		// These two characters were removed from Emoji_Modifier_Base in Emoji 4.0, but we need to
		// keep them as emoji modifier bases since there are fonts and user-generated text out there
		// that treats these as potential emoji bases.
		if (codePoint == 0x1F91D \|\| codePoint == 0x1F93C) {
		return true;
		}
		// Emoji Modifier Base characters new in Unicode emoji 5.0.
		// From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt
		// TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0.
		if (codePoint == 0x1F91F
		\|\| (0x1F931 <= codePoint && codePoint <= 0x1F932)
		\|\| (0x1F9D1 <= codePoint && codePoint <= 0x1F9DD)) {
		return true;
		}
		return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER_BASE);
		}

		// Returns true if the character has Emoji property.
		public static boolean isEmoji(int codePoint) {
		return Arrays.binarySearch(EMOJI_LIST, codePoint) >= 0;
		// Emoji characters new in Unicode emoji 5.0.
		// From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt
		// TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0.
		if ((0x1F6F7 <= codePoint && codePoint <= 0x1F6F8)
		\|\| codePoint == 0x1F91F
		\|\| (0x1F928 <= codePoint && codePoint <= 0x1F92F)
		\|\| (0x1F931 <= codePoint && codePoint <= 0x1F932)
		\|\| codePoint == 0x1F94C
		\|\| (0x1F95F <= codePoint && codePoint <= 0x1F96B)
		\|\| (0x1F992 <= codePoint && codePoint <= 0x1F997)
		\|\| (0x1F9D0 <= codePoint && codePoint <= 0x1F9E6)) {
		return true;
		}
		return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI);
		}

		// Returns true if the character can be a base character of COMBINING ENCLOSING KEYCAP.