Pipe Parse

gistfile1.m

#import <Foundation/Foundation.h>

int main(int argc, char *argv[]) {
	@autoreleasepool {
	    NSString *str = @"foo|bar|baz\\|quux";
		BOOL lastWasBackslash = NO;
		NSMutableString *sub = [NSMutableString string];
		NSMutableArray *matches = [NSMutableArray array];
		
		for (NSUInteger idx; idx < [str length]; ++idx) {
			unichar c = [str characterAtIndex:idx];
			NSLog(@"%C", c);
			
			if (lastWasBackslash) {
				[sub appendFormat:@"%C", c];
				lastWasBackslash = NO;
				continue;
			}
				
			if (c == '\\') {
				lastWasBackslash = YES;
				continue;
			}
			
			if (c == '|') {
				NSLog(@"pipe");
				[matches addObject:sub];
				sub = [NSMutableString string];
			} else {
				[sub appendFormat:@"%C", c];
			}
		}
		
		[matches addObject:sub];
		
		NSLog(@"%@", matches);
	}

	return 0;
}