NSScannerOOExtensions.m

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/*
 
NSScannerOOExtensions.m
 
Oolite
Copyright (C) 2004-2013 Giles C Williams and contributors
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
 
*/
 
#import "NSScannerOOExtensions.h"
 
 
@implementation NSScanner (OOExtensions)
 
- (BOOL) ooliteScanCharactersFromSet:(NSCharacterSet *)set intoString:(NSString **)value
{
    NSUInteger      currentLocation = [self scanLocation];
    NSRange         matchedRange = NSMakeRange( currentLocation, 0);
    NSString        *scanString = [self string];
    NSUInteger      scanLength = [scanString length];
    
    while ((currentLocation < scanLength)&&([set characterIsMember:[scanString characterAtIndex:currentLocation]]))
    {
        currentLocation++;
    }
    
    [self setScanLocation:currentLocation];
    
    matchedRange.length = currentLocation - matchedRange.location;
    
    if (!matchedRange.length)  return NO;
    
    if (value != NULL)
    {
        *value = [scanString substringWithRange:matchedRange];
    }
    
    return YES;
}
 
 
- (BOOL) ooliteScanUpToCharactersFromSet:(NSCharacterSet *)set intoString:(NSString **)value
{
    NSUInteger      currentLocation = [self scanLocation];
    NSRange         matchedRange = NSMakeRange( currentLocation, 0);
    NSString        *scanString = [self string];
    NSUInteger      scanLength = [scanString length];
    
    while ((currentLocation < scanLength)&&(![set characterIsMember:[scanString characterAtIndex:currentLocation]]))
    {
        currentLocation++;
    }
    
    [self setScanLocation:currentLocation];
    
    matchedRange.length = currentLocation - matchedRange.location;
    
    if (!matchedRange.length)  return NO;
    
    if (value != NULL)
    {
        *value = [scanString substringWithRange:matchedRange];
    }
    
    return YES;
}
 
@end