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(-compare:options:range:): Simple implementation; not complete.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@411 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Andrew McCallum 1995-05-05 18:29:12 +00:00
parent d16aad8131
commit a11e8a9043
1 changed files with 39 additions and 2 deletions
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41
Source/NSString.m
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@ -368,8 +368,45 @@
options: (unsigned int)mask
range: (NSRange)aRange
{
[self notImplemented:_cmd];
return 0;
/* xxx ignores NSAnchoredSearch in mask. Fix this. */
/* xxx only handles C-string encoding */
int i, start, end, increment;
const char *s1 = [self _cStringContents];
const char *s2 = [aString _cStringContents];
if (mask & NSBackwardsSearch)
{
start = aRange.location + aRange.length;
end = aRange.location;
increment = -1;
}
else
{
start = aRange.location;
end = aRange.location + aRange.length;
increment = 1;
}
if (mask & NSCaseInsensitiveSearch)
{
for (i = start; i < end; i += increment)
{
int c1 = tolower(s1[i]);
int c2 = tolower(s2[i]);
if (c1 < c2) return NSOrderedAscending;
if (c1 > c2) return NSOrderedDescending;
}
}
else
{
for (i = start; i < end; i += increment)
{
if (s1[i] < s2[i]) return NSOrderedAscending;
if (s1[i] > s2[i]) return NSOrderedDescending;
}
}
return NSOrderedSame;
}
- (BOOL) hasPrefix: (NSString*)aString