iOS 中的 CSV 逐行解析

我正在 Objective-c 中解析 CSV 文件。该文件包含如下内容：

line 40 | Rising searches
line 41 | nabi avcı,Breakout
line 42 | stonewall,+700%
line 43 | medgar evers,+500%
line 44 | lgbt,+350%
line 45 | roe v wade,+350%
line 46 | αÏεÏγια,+250%

我想获取第41行到第50行（含）的内容。然后我想将每一行分成两行NSStrings包含之前内容的一个,另一个是后面的东西。我怎样才能做到这一点？

非常感谢任何帮助。谢谢！安托万

尝试使用 Dave DeLong 的 CHCSVParser。https://github.com/davedelong/CHCSVParser https://github.com/davedelong/CHCSVParser

您可以使用 CSV 文件的路径初始化解析器（假设您有 CHCSVParser *_parser 实例变量）：

NSString *filePath = ...; // the path to your CSV file
_parser = [[CHCSVParser alloc] initWithContentsOfCSVFile:filePath];
_parser.delegate = self;
[_parser parse];

然后，您应该使用三种委托方法的组合来自定义解析器并使其满足您的需求：

- (void)parser:(CHCSVParser *)parser didBeginLine:(NSUInteger)recordNumber
{
    // Only parse the fields on lines 41 to 50
    // _shouldParseLine is an ivar that is set to YES
    // only when the fields inside the following line or lines
    // should be parsed.
    if (recordNumber == 41) {
        _shouldParseLine = YES;
    }
}

- (void)parser:(CHCSVParser *)parser didEndLine:(NSUInteger)recordNumber 
{
    if (recordNumber == 50) {
        // The parser has finished parsing the 50th line
        // We're done, cancel any further parsing.
        // It is not necessary to set _shouldParseLine to NO, 
        // since the parser is killed here and the didReadField
        // delegate method will not be called again.
        [parser cancelParsing];
    }
}

- (void)parser:(CHCSVParser *)parser didReadField:(NSString *)field atIndex:(NSInteger)fieldIndex
{
    if (_shouldParseLine == YES) {
        // Here are your fields.
        // The field at index 0 consists of the text
        // before the comma, the field at index 1
        // consists of the text after the comma.
    }
}