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Simple fix to check for whitespace characters using strchr since the old

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mechanism using characterset bitmap representations was broken by the
change to reduce waste in bintmaps (the code assumed the bitmap was
bigger than it really is).
This commit is contained in:
Richard Frith-Macdonald 2020-06-24 11:35:29 +01:00
parent ba24a18176
commit b7882e3194
1 changed files with 9 additions and 18 deletions
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27
Source/NSString.m
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@ -164,39 +164,30 @@ static BOOL (*nonBaseImp)(id, SEL, unichar) = 0;
*/
#define IMMUTABLE(S) AUTORELEASE([(S) copyWithZone: NSDefaultMallocZone()])
#define IS_BIT_SET(a,i) ((((a) & (1<<(i)))) > 0)
static const char *whitespace = 0;
static NSCharacterSet *nonspace = nil;
static NSData *whitespaceBitmap;
static unsigned const char *whitespaceBitmapRep = NULL;
#define GS_IS_WHITESPACE(X) IS_BIT_SET(whitespaceBitmapRep[(X)/8], (X) % 8)
#define GS_IS_WHITESPACE(X) strchr(whitespace, X)
static void setupNonspace(void)
{
if (nil == nonspace)
{
NSCharacterSet *whitespace;
NSCharacterSet *w;
whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
nonspace = [[whitespace invertedSet] retain];
w = [NSCharacterSet whitespaceAndNewlineCharacterSet];
nonspace = [[w invertedSet] retain];
}
}
static void setupWhitespace(void)
{
if (whitespaceBitmapRep == NULL)
{
NSCharacterSet *whitespace;
/*
We can not use whitespaceAndNewlineCharacterSet here as this would lead
to a recursion, as this also reads in a property list.
whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
*/
whitespace = [NSCharacterSet characterSetWithCharactersInString:
@" \t\r\n\f\b"];
whitespaceBitmap = RETAIN([whitespace bitmapRepresentation]);
whitespaceBitmapRep = [whitespaceBitmap bytes];
if (0 == whitespace)
{
whitespace = " \t\r\n\f\b";
}
}
@ -3504,7 +3495,7 @@ GSICUCollatorOpen(NSStringCompareOptions mask, NSLocale *locale)
if (len == 0)
return IMMUTABLE(self);
if (whitespaceBitmapRep == NULL)
if (NULL == whitespace)
setupWhitespace();
s = NSZoneMalloc([self zone], sizeof(unichar)*len);