如何从NSString获取每行？ [英] How do I get each line from an NSString?

问题描述

如果我有一个NSString的文本文件，如何获得NSString的NSArray与每个NSString包含文件的一行。

If I have an NSString with a text file in it, how do I get an NSArray of NSString with each NSString containing a line of the file.

在10.5我这样做：

NSArray* lines = [str componentsSeparatedByCharactersInSet: [NSCharacterSet newlineCharacterSet]];

但这在10.4中不起作用，我的程序需要在10.4中工作。

But that doesn't work in 10.4, and my program needs to work in 10.4.

此外，它需要使用\r，\\\
和\r\行行尾。

As well, it needs to work with \r, \n and \r\n line endings.

推荐答案

以下代码直接来自关于段落和换行符的Apple文档：

unsigned length = [string length];
unsigned paraStart = 0, paraEnd = 0, contentsEnd = 0;
NSMutableArray *array = [NSMutableArray array];
NSRange currentRange;
while (paraEnd < length)
{
    [string getParagraphStart:&paraStart end:&paraEnd
    contentsEnd:&contentsEnd forRange:NSMakeRange(paraEnd, 0)];
    currentRange = NSMakeRange(paraStart, contentsEnd - paraStart);
    [array addObject:[string substringWithRange:currentRange]];
}

我不能100％确定是否可以使用10.4

I'm not 100% sure if it will work with 10.4

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