Re: NSScanner know-how
Re: NSScanner know-how
- Subject: Re: NSScanner know-how
- From: Jérôme Laurens <email@hidden>
- Date: Thu, 24 Jul 2003 00:22:58 +0200
Le jeudi, 24 juil 2003, ` 00:02 Europe/Zurich, Sanri Parov a icrit :
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Hi everybody,
>
>
I'm in little trouble with NSScanner, just because it's not well
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documented IMHO in the developer docs.
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Given this puny little source text:
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#id:15;
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#customer:F.lli Remari;
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#phone:123456789;
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#cell:13456;
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#fax:987987;
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#id:16;
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#customer:Zanovello Nicola;
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#phone:456789;
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#cell:;
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#fax:12356;
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I'd like to import the right-values to some variables.
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Here's the source I've done by copying the example from the docs...
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NSString* id_origin = @"#id:";
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NSStrign* id_sql;
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NSCharacterSet *semicolonSet;
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NSScanner *scanner;
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semicolonSet = [NSCharacterSet
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characterSetWithCharactersInString:@";"];
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scanner = [NSScanner scannerWithString:stringa_da_file];
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>
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while ([scanner isAtEnd] == NO)
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{
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if([scanner scanString:id_origin intoString:NULL] && [scanner
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scanUpToCharactersFromSet:semicolonSet intoString:&id_sql] && [scanner
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scanString:@";" intoString:NULL])
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NSLog(@"%@",id_sql);
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}
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replace your test by
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if([scanner scanString:id_origin intoString:NULL] && ([scanner
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scanUpToCharactersFromSet:semicolonSet intoString:&id_sql], [scanner
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scanString:@";" intoString:NULL]))
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NSLog(@"%@",id_sql);
this will prevent the problem of the line
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#cell:;
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where scanner
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scanUpToCharactersFromSet:semicolonSet intoString:&id_sql]
would return NO because it has nothing to scan to reach the :
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