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By: a guest on
Apr 28th, 2012 | syntax:
None | size: 1.65 KB | hits: 22 | expires: Never
NSScanner behavior
[fields scanCharactersFromSet:fieldCharSet intoString:nil];
Name,Location,Number,Units
A,AA,4,mm
B,BB,3.5,km
C,CC,10.2,mi
D,DD,2,mm
E,EE,6,in
F,FF,2.8,m
G,GG,3.7,km
H,HH,4.3,mm
I,II,4,km
-(void)parseFile {
NSCharacterSet *lineCharSet = [NSCharacterSet newlineCharacterSet];
NSCharacterSet *fieldCharSet = [NSCharacterSet characterSetWithCharactersInString:self.separator];
// import the file
NSStringEncoding *encoding = nil;
NSError *error = nil;
NSString *data = [[NSString alloc] initWithContentsOfURL:self.absoluteURL usedEncoding:encoding error:&error];
NSString *line,*field;
NSScanner *lines = [NSScanner scannerWithString:data];
while (![lines isAtEnd]) {
[lines scanUpToCharactersFromSet:lineCharSet intoString:&line];//automatically sets to next line - why?
NSLog(@"%@n",line);
NSScanner *fields = [NSScanner scannerWithString:line];
while (![fields isAtEnd]) {
[fields scanUpToCharactersFromSet:fieldCharSet intoString:&field];
[fields scanCharactersFromSet:fieldCharSet intoString:nil]; //have to do this otherwise will not go to next symbol
NSLog(@"%@n", field);
}
}
}
-(void)parseFile {
NSString *data = [[NSString alloc] initWithContentsOfURL:self.absoluteURL usedEncoding:encoding error:&error];
for (NSString *line in [data componentsSeparatedByString:@"n"]) {
if (line.length == 0)
continue;
NSLog(@"line: %@", line);
for (NSString *field in [line componentsSeparatedByString:self.separator]) {
NSLog(@" field: %@", field);
}
}
}