Objective-C 將CSV文件加載到字典(NSMutableDictionary)

下面的代碼用來從CSV讀取文件並存儲到字典中：

-(id)addCsvFileToDictionary
{
    NSString *filepath = [[NSBundle mainBundle]pathForResource:@"Test" ofType:@"csv"];
    NSData   *data = [NSData dataWithContentsOfFile:filepath];
    NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    NSArray  *array = [string componentsSeparatedByString:@"\r\n"];
    NSString *headerStr = array.firstObject;
    NSString *flag = @",";
    NSArray  *headerArray = [headerStr componentsSeparatedByString:flag];
    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    for (int i=1; i<array.count; i++) {
        NSString *contentStr = array[i];
        NSArray *contentArray = [contentStr componentsSeparatedByString:flag];
        for (int index=0; index<headerArray.count; index++) {
            NSString *key = [NSString stringWithFormat:@"%.1f", [headerArray[index] doubleValue]];
            NSString *value =[NSString stringWithFormat:@"%.1f",[contentArray[index] doubleValue]];
            if (key.length>0 && value.length) {
                dict[key] = value;
            }
        }
    }
    return dict;
}