NSScanner 用法

通过NSScanner读取text文档

NSString *tmp;
NSArray *lines; /*将文件转化为一行一行的*/
lines = [[NSString    stringWithContentsOfFile:@"testFileReadLines.txt"]
               componentsSeparatedByString:@”\n”];

 NSEnumerator *nse = [lines objectEnumerator];

// 读取<>里的内容
 while(tmp = [nse nextObject]) {
          NSString *stringBetweenBrackets = nil;
          NSScanner *scanner = [NSScanner scannerWithString:tmp];
          [scanner scanUpToString:@"<" intoString:nil];
          [scanner scanString:@"<" intoString:nil];
          [scanner scanUpToString:@">" intoString:&stringBetweenBrackets];

          NSLog([stringBetweenBrackets description]);
  }