Re: Smart sort
Re: Smart sort
- Subject: Re: Smart sort
- From: James Bucanek <email@hidden>
- Date: Mon, 27 Nov 2006 08:54:36 -0700
Martin wrote on Monday, November 27, 2006:
>Hi,
>
>I'm listing a folder's content using the following method :
>[[NSFileManager defaultManager] enumeratorAtPath:@"/path/to/a/folder"].
>
>But I'd like to files names to be smart-sorted, just like the Finder
>does :
>File 1.txt
>File 2.txt
>File 10.txt
>
>Instead of what the previous method gives me :
>File 1.txt
>File 10.txt
>File 2.txt
>
>Is there a simple way to do this ?
I use UCCompareTextNoLocale using kUCCollateTypeHFSExtended.
I do a lot of work with the Carbon file APIs and wrote this catagory for NSString. The - (NSComparisonResult)hfsExtendedCompare:(NSString*)right lets me sort Cocoa collections of NSStrings.
You're free to copy this and you as you please.
---- HFSUnicodeString.h ---------------------------------
//
// HFSUnicodeString.h
// FacetWorkshop
//
// Created by James Bucanek on 12/15/04.
// Copyright 2004 Dawn to Dusk Software. All rights reserved.
//
#import <Cocoa/Cocoa.h>
@interface NSString (HFSUnicodeString)
+ (NSString*)stringWithHFSUnicodeStr255:(const HFSUniStr255*)hfsStr255;
- (NSComparisonResult)hfsExtendedCompare:(NSString*)right;
- (void)getHFSUnicodeStr255:(HFSUniStr255*)hfsStr255;
@end
---- HFSUnicodeString.m ---------------------------------
//
// HFSUnicodeString.m
// FacetWorkshop
//
// Created by James Bucanek on 12/15/04.
// Copyright 2004 Dawn to Dusk Software. All rights reserved.
//
#import "HFSUnicodeString.h"
@implementation NSString (HFSUnicodeString)
+ (NSString*)stringWithHFSUnicodeStr255:(const HFSUniStr255*)hfsStr255
{
return ([NSString stringWithCharacters:hfsStr255->unicode length:hfsStr255->length]);
}
- (NSComparisonResult)hfsExtendedCompare:(NSString*)right
{
unsigned int leftLength = [self length];
unsigned int rightLegnth = [right length];
NSAssert1(leftLength<=255,@"HFS Unicode string too long (%d)",leftLength);
NSAssert1(rightLegnth<=255,@"HFS Unicode string too long (%d)",rightLegnth);
UniChar leftChars[256];
UniChar rightChars[256];
[self getCharacters:leftChars];
[right getCharacters:rightChars];
SInt32 order;
OSStatus status = UCCompareTextNoLocale(kUCCollateTypeHFSExtended<<kUCCollateTypeShiftBits,leftChars,leftLength,rightChars,rightLegnth,NULL,&order);
NSAssert1(status==0,@"UCCompareTextNoLocale error: %d",(int)status);
if (order<0)
return (NSOrderedAscending);
if (order==0)
return (NSOrderedSame);
return (NSOrderedDescending);
}
- (void)getHFSUnicodeStr255:(HFSUniStr255*)hfsStr255
{
hfsStr255->length = [self length];
NSAssert1(hfsStr255->length<=255,@"HFS Unicode string too long (%d)",hfsStr255->length);
[self getCharacters:hfsStr255->unicode];
}
@end
--
James Bucanek
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