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Patch from Max Horn to optimize 'stringByTruncatingTo'.

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This commit is contained in:
sfraser%netscape.com 2002-08-06 20:04:07 +00:00
parent 57378f7d93
commit 5b35359398
4 changed files with 36 additions and 72 deletions
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27
camino/NSString+Utils.mm
View File

@ -50,7 +50,7 @@
if (!sEllipsisString)
{
unichar ellipsisChar = 0x2026;
sEllipsisString = [[[NSString alloc] initWithCharacters:&ellipsisChar length:1] retain];
sEllipsisString = [[NSString alloc] initWithCharacters:&ellipsisChar length:1];
}
return sEllipsisString;
@ -131,34 +131,24 @@
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
{
NSString* ellipsisString = [NSString ellipsisString];
if ([self length] > maxCharacters)
{
NSMutableString *croppedString = [NSMutableString stringWithCapacity:maxCharacters + [ellipsisString length]];
NSMutableString *croppedString = [self mutableCopy];
NSRange replaceRange;
replaceRange.length = [self length] - maxCharacters;
switch (truncationType)
{
case kTruncateAtStart:
[croppedString appendString:ellipsisString];
[croppedString appendString:[self substringWithRange:NSMakeRange([self length] - maxCharacters, maxCharacters)]];
replaceRange.location = 0;
break;
case kTruncateAtMiddle:
{
int len1 = maxCharacters / 2;
int len2 = maxCharacters - len1;
NSString *part1 = [self substringWithRange:NSMakeRange(0, len1)];
NSString *part2 = [self substringWithRange:NSMakeRange([self length] - len2, len2)];
[croppedString appendString:part1];
[croppedString appendString:ellipsisString];
[croppedString appendString:part2];
}
replaceRange.location = maxCharacters / 2;
break;
case kTruncateAtEnd:
[croppedString appendString:[self substringWithRange:NSMakeRange(0, maxCharacters)]];
[croppedString appendString:ellipsisString];
replaceRange.location = maxCharacters;
break;
default:
@ -168,6 +158,7 @@
break;
}
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
return croppedString;
}
else

27
camino/src/extensions/NSString+Utils.mm
View File

@ -50,7 +50,7 @@
if (!sEllipsisString)
{
unichar ellipsisChar = 0x2026;
sEllipsisString = [[[NSString alloc] initWithCharacters:&ellipsisChar length:1] retain];
sEllipsisString = [[NSString alloc] initWithCharacters:&ellipsisChar length:1];
}
return sEllipsisString;
@ -131,34 +131,24 @@
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
{
NSString* ellipsisString = [NSString ellipsisString];
if ([self length] > maxCharacters)
{
NSMutableString *croppedString = [NSMutableString stringWithCapacity:maxCharacters + [ellipsisString length]];
NSMutableString *croppedString = [self mutableCopy];
NSRange replaceRange;
replaceRange.length = [self length] - maxCharacters;
switch (truncationType)
{
case kTruncateAtStart:
[croppedString appendString:ellipsisString];
[croppedString appendString:[self substringWithRange:NSMakeRange([self length] - maxCharacters, maxCharacters)]];
replaceRange.location = 0;
break;
case kTruncateAtMiddle:
{
int len1 = maxCharacters / 2;
int len2 = maxCharacters - len1;
NSString *part1 = [self substringWithRange:NSMakeRange(0, len1)];
NSString *part2 = [self substringWithRange:NSMakeRange([self length] - len2, len2)];
[croppedString appendString:part1];
[croppedString appendString:ellipsisString];
[croppedString appendString:part2];
}
replaceRange.location = maxCharacters / 2;
break;
case kTruncateAtEnd:
[croppedString appendString:[self substringWithRange:NSMakeRange(0, maxCharacters)]];
[croppedString appendString:ellipsisString];
replaceRange.location = maxCharacters;
break;
default:
@ -168,6 +158,7 @@
break;
}
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
return croppedString;
}
else

27
chimera/NSString+Utils.mm
View File

@ -50,7 +50,7 @@
if (!sEllipsisString)
{
unichar ellipsisChar = 0x2026;
sEllipsisString = [[[NSString alloc] initWithCharacters:&ellipsisChar length:1] retain];
sEllipsisString = [[NSString alloc] initWithCharacters:&ellipsisChar length:1];
}
return sEllipsisString;
@ -131,34 +131,24 @@
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
{
NSString* ellipsisString = [NSString ellipsisString];
if ([self length] > maxCharacters)
{
NSMutableString *croppedString = [NSMutableString stringWithCapacity:maxCharacters + [ellipsisString length]];
NSMutableString *croppedString = [self mutableCopy];
NSRange replaceRange;
replaceRange.length = [self length] - maxCharacters;
switch (truncationType)
{
case kTruncateAtStart:
[croppedString appendString:ellipsisString];
[croppedString appendString:[self substringWithRange:NSMakeRange([self length] - maxCharacters, maxCharacters)]];
replaceRange.location = 0;
break;
case kTruncateAtMiddle:
{
int len1 = maxCharacters / 2;
int len2 = maxCharacters - len1;
NSString *part1 = [self substringWithRange:NSMakeRange(0, len1)];
NSString *part2 = [self substringWithRange:NSMakeRange([self length] - len2, len2)];
[croppedString appendString:part1];
[croppedString appendString:ellipsisString];
[croppedString appendString:part2];
}
replaceRange.location = maxCharacters / 2;
break;
case kTruncateAtEnd:
[croppedString appendString:[self substringWithRange:NSMakeRange(0, maxCharacters)]];
[croppedString appendString:ellipsisString];
replaceRange.location = maxCharacters;
break;
default:
@ -168,6 +158,7 @@
break;
}
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
return croppedString;
}
else

27
chimera/src/extensions/NSString+Utils.mm
View File

@ -50,7 +50,7 @@
if (!sEllipsisString)
{
unichar ellipsisChar = 0x2026;
sEllipsisString = [[[NSString alloc] initWithCharacters:&ellipsisChar length:1] retain];
sEllipsisString = [[NSString alloc] initWithCharacters:&ellipsisChar length:1];
}
return sEllipsisString;
@ -131,34 +131,24 @@
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
{
NSString* ellipsisString = [NSString ellipsisString];
if ([self length] > maxCharacters)
{
NSMutableString *croppedString = [NSMutableString stringWithCapacity:maxCharacters + [ellipsisString length]];
NSMutableString *croppedString = [self mutableCopy];
NSRange replaceRange;
replaceRange.length = [self length] - maxCharacters;
switch (truncationType)
{
case kTruncateAtStart:
[croppedString appendString:ellipsisString];
[croppedString appendString:[self substringWithRange:NSMakeRange([self length] - maxCharacters, maxCharacters)]];
replaceRange.location = 0;
break;
case kTruncateAtMiddle:
{
int len1 = maxCharacters / 2;
int len2 = maxCharacters - len1;
NSString *part1 = [self substringWithRange:NSMakeRange(0, len1)];
NSString *part2 = [self substringWithRange:NSMakeRange([self length] - len2, len2)];
[croppedString appendString:part1];
[croppedString appendString:ellipsisString];
[croppedString appendString:part2];
}
replaceRange.location = maxCharacters / 2;
break;
case kTruncateAtEnd:
[croppedString appendString:[self substringWithRange:NSMakeRange(0, maxCharacters)]];
[croppedString appendString:ellipsisString];
replaceRange.location = maxCharacters;
break;
default:
@ -168,6 +158,7 @@
break;
}
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
return croppedString;
}
else