blob: d33aad99e1a56d531c615c70021b708c1426a34b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* 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 android.text;
import android.icu.lang.UCharacter;
import android.icu.lang.UProperty;
/**
* An utility class for Emoji.
* @hide
*/
public class Emoji {
public static int COMBINING_ENCLOSING_KEYCAP = 0x20E3;
public static int ZERO_WIDTH_JOINER = 0x200D;
public static int VARIATION_SELECTOR_16 = 0xFE0F;
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 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) {
// 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 is a new emoji still not supported in our version of ICU.
*/
public static boolean isNewEmoji(int codePoint) {
// 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 (codePoint < 0x1F6F7 || codePoint > 0x1F9E6) {
// Optimization for characters outside the new emoji range.
return false;
}
return (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);
}
/**
* Returns true if the character has Emoji property.
*/
public static boolean isEmoji(int codePoint) {
return isNewEmoji(codePoint) || UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI);
}
// Returns true if the character can be a base character of COMBINING ENCLOSING KEYCAP.
public static boolean isKeycapBase(int codePoint) {
return ('0' <= codePoint && codePoint <= '9') || codePoint == '#' || codePoint == '*';
}
/**
* Returns true if the character can be a part of tag_spec in emoji tag sequence.
*
* Note that 0xE007F (CANCEL TAG) is not included.
*/
public static boolean isTagSpecChar(int codePoint) {
return 0xE0020 <= codePoint && codePoint <= 0xE007E;
}
}
|
