Re: NSScanner bug?

FROM : Mark's Studio
DATE : Tue Oct 22 20:57:50 2002

Yes i know, but why does it not return YES with a scanLocation of 0,
if i use scanUpToString@"BC" it will return YES with scanLocation 1.


On tirsdag, okt 22, 2002, at 15:54 Europe/Copenhagen, Jirtme Laurens
wrote:

> Le mardi, 22 oct 2002, ` 14:56 Europe/Zurich, Mark's Studio a icrit :
>
>> I am trying to scan a text file, and i use this
>>
>>          if([theScanner scanUpToString:@"ABC" intoString:NULL])
>>
>> if the textfile contains "ABC" at the beginning the scanner will not
>> find it, and it will not find the next "ABC".
>>
>> BUG???
>>
>
> no,
>
> the doc says that this method returns YES if some characters have been
> scanned NO otherwise.
> It stops just before the stopString!
>
> you can code like this
>
> if([theScanner scanUpToString: @"ABC" intoString: nil], [theScanner
> scanString: @"ABC" intoString: nil])
> {
>     //do your job
> }
>
> or
>
> if([theScanner scanUpToString: @"ABC" intoString: nil], ![theScanner
> isAtEnd])
> {
>     [theScanner setScanLocation: [theScanner scanLocation]+3];// 3 for
> [@"ABC" length]
>     //do your job
> }
>
> it is not very efficient...
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Peter Mark

Mark's Recording Studio A/S
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