//
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// NSString+HMEmoji.m
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// 表情键盘
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//
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// Created by 刘凡 on 16/3/4.
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// Copyright © 2016年 itcast. All rights reserved.
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//
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#import "NSString+HMEmoji.h"
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#define EmojiCodeToSymbol(c) ((((0x808080F0 | (c & 0x3F000) >> 4) | (c & 0xFC0) << 10) | (c & 0x1C0000) << 18) | (c & 0x3F) << 24)
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@implementation NSString (HMEmoji)
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+ (NSString *)hm_emojiWithIntCode:(unsigned int)intCode {
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unsigned int symbol = EmojiCodeToSymbol(intCode);
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NSString *string = [[NSString alloc] initWithBytes:&symbol length:sizeof(symbol) encoding:NSUTF8StringEncoding];
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if (string == nil) {
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string = [NSString stringWithFormat:@"%C", (unichar)intCode];
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}
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return string;
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}
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+ (NSString *)hm_emojiWithStringCode:(NSString *)stringCode {
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NSScanner *scanner = [[NSScanner alloc] initWithString:stringCode];
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unsigned int intCode = 0;
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[scanner scanHexInt:&intCode];
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return [self hm_emojiWithIntCode:intCode];
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}
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- (NSString *)hm_emoji {
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return [NSString hm_emojiWithStringCode:self];
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}
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@end
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