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[ios] Fix substring range length calculation for unicode emoji.

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Mikael Sand
2018-08-09 21:24:09 +03:00
parent 429f1969c3
commit 49a892e52c
1 changed files with 2 additions and 1 deletions
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ios/Text/RNSVGTSpan.m
+2 -1
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@@ -815,7 +815,8 @@ static double RNSVGTSpan_radToDeg = 180 / M_PI;
if (width == 0) { // Render unicode emoji
UILabel *label = [[UILabel alloc] init];
CFIndex startIndex = indices[g];
NSString* currChars = [str substringWithRange:NSMakeRange(startIndex, MAX(1, endIndex - startIndex))];
NSUInteger len = endIndex == startIndex ? n - startIndex : MAX(1, endIndex - startIndex);
NSString* currChars = [str substringWithRange:NSMakeRange(startIndex, len)];
label.text = currChars;
label.opaque = NO;
label.backgroundColor = UIColor.clearColor;