objective-c - 尝试分割非常大的字符串

Answer 1

我认为@babbidi的想法正确。 mainHtml很大，周围有许多自动发布的副本(每次迭代一个副本)尚未发布。尝试在代码中添加以下@autorelease，以在每个循环结束时释放所有自动释放的对象。如果您未使用Mac OS X 10.7，则只需在主循环外手动创建自动释放池，并在每次迭代中将其释放一次。

NSRange range = [mainHtml rangeOfString:@"<p class=NumberedParagraph>"];
int counter = 1;

// locations will == int max if it can't find any more occurances
while (range.location < [mainHtml length]) {
    @autorelease {
        NSString *curStr;
        NSRange curStrRange;

        NSRange rangeToSearchIn = NSMakeRange(range.location+1, [mainHtml length] - range.location - 1);
        NSRange nextRange = [mainHtml rangeOfString:@"<p class=NumberedParagraph>" options:NSCaseInsensitiveSearch range:rangeToSearchIn];

        if (nextRange.location > [mainHtml length])
        {
            // This is the last string - get everything up to the end of the file
            curStrRange = NSMakeRange(0, [mainHtml length]);
            curStr = [mainHtml substringFromIndex:range.location];
        } else {
            curStrRange = NSMakeRange(range.location, nextRange.location - range.location);
            curStr = [mainHtml substringWithRange:curStrRange];
        }

        // Remove the substring just processed from the orignal string
        // * it crashes here, normally on the 3rd itteration
        mainHtml = [mainHtml substringFromIndex:curStrRange.location + curStrRange.length];
        range = [mainHtml rangeOfString:@"<p class=NumberedParagraph>"];

        [self.parts addObject:curStr];
    }
}