Question

我试图利用NSRegularExpression从一个声音流中提取海经会数据,但我认为我有一般问题。

我的守则是:

NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"StreamTitle= (.*) ;" 
                                                                       options:NSRegularExpressionCaseInsensitive 
                                                                         error:nil];

NSMutableString *messageAsText = [NSMutableString stringWithUTF8String:[messageAsRawData bytes]];
NSTextCheckingResult *match = [regex firstMatchInString:messageAsText 
                                                options:0
                                                  range:NSMakeRange(0, [messageAsText length])];
NSString *message = [messageAsText substringWithRange:[match rangeAtIndex:1]];
NSLog(@"Input:  %@ , Output:  %@ ", messageAsText, message);

投入是:

StreamTitle= Thomas Newman - Awkward Talk [The Horse Whisperer] ;StreamUrl=  ;

我预计会这样做:

Thomas Newman - Awkward Talk [The Horse Whisperer]

但我这样做:

Thomas Newman - Awkward Talk [The Horse Whisperer] ;StreamUrl=

This is not NSRegularExpression related, because the regexp shows the same result if tested here: http://regex.larsolavtorvik.com/

没有人会向我指出正确的reg?

Answer 1

制作<代码>*> > 核酸,将其附在上? 如同:

StreamTitle= (.*?)

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