Hi,
I've been playing with NSScanner to cut a string eg: this is a
test " So is this"test
from a search field into its components. ie. extract the quoted text
to be placed into an array as well as the other components, pre and
post quoted text. The other components will eventually be split with
componentsSeparatedByString.
My issue is that if I paste the above text into the search field, all
is OK. But if I type in- "test
as a test case, it locks up and fails with The Debugger has exited due
to signal 11 (SIGSEGV).The Debugger has exited due to signal 11
(SIGSEGV).
The code I am using is as follows:
...
NSCharacterSet *quoteCharSet = [NSCharacterSet
characterSetWithCharactersInString:@"\""];
NSMutableCharacterSet *alphaNumericAndAsteriskSet =
[NSMutableCharacterSet alphanumericCharacterSet];
[alphaNumericAndAsteriskSet addCharactersInString:@"*"];
...
searchWords = [searchWords stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceAndNewlineCharacterSet]]; //discard
extraneous characters from nssearchfield
searchTermsScanner = [[NSScanner alloc]
initWithString:searchWords]; // init the scanner with the search words
while ( ! [searchTermsScanner isAtEnd])
{
[searchTermsScanner scanUpToCharactersFromSet:quoteCharSet
intoString:&foundStrings]; // scan up to a quote
[firstScanArray addObject:foundStrings]; //add the quote charcter to
the array
if ( ! [searchTermsScanner isAtEnd])
{
[searchTermsScanner
scanUpToCharactersFromSet:alphaNumericAndAsteriskSet
intoString:&foundStrings];
[firstScanArray addObject:foundStrings];
}
}
NSLog(@"%@", [firstScanArray description]);
...
[searchTermsScanner release];
[pool release];
return 0;
}
Can anyone suggest where I am going wrong?
Thanks in advance,
Jason Wiggins
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