objective c：讀取csv文件

Question

我有這種類型的文件：

@firstTablel：1＃one＃two＃three＃four; 2＃蘋果＃塔＃花＃機器人;

這是我的csv文件的示例...「firstTable」是我的表格，1和2是我的兩個項目的兩個id。

如何在目標c中讀取此文件？你可以幫我嗎？

Answer 1

可可科學家們有一個偉大的職位上閱讀的CSV文件：http://macresearch.org/cocoa-scientists-part-xxvi-parsing-csv-data

在你的情況，你會做這樣的事情：

NSString *fileString = [NSString stringWithContentsOfFile:pathToFile encoding:NSUTF8StringEncoding error:outError]; 
if (!fileString) { 
    NSLog(@"Error reading file."); 
} 
NSScanner *scanner = [NSScanner scannerWithString:fileString]; 
[scanner setCharactersToBeSkipped:[NSCharacterSet characterSetWithCharactersInString:@"\n#; "]]; 

NSString *id = nil, *hashOne = nil, *hashTwo = nil, *hashThree = nil, *hashFour = nil; 
while ([scanner scanUpToString:@"#" intoString:&id] && [scanner scanUpToString:@"#" intoString:&hashOne] && [scanner scanUpToString:@"#" intoString:&hashTwo] && [scanner scanUpToString:@"#" intoString:&hashThree] && [scanner scanUpToString:@";" intoString:&hashFour]) { 
    // Process the values as needed. 
    NSLog(@"id:%@, 1:%@, 2:%@, 3:%@:, 4:%@", id, hashOne, hashTwo, hashThree, hashFour); 
} 

在您所提供的樣品，這將打印：

2011-03-31 13:55:07.846 Stephen[39304:903] id:1, 1:one, 2:two, 3:three:, 4:four 
2011-03-31 13:55:07.849 Stephen[39304:903] id:2, 1:apple, 2:tower, 3:flower:, 4:robot