文件是否隐藏？ [英] Is the file hidden?

问题描述

如何确定某个路径是否指向隐藏文件/文件夹？

  NSString * file = @ my / file / some.where; 
 BOOL fileIsHidden = //<  - 我该怎么办？ 
  

我知道隐藏文件以句点为前缀。这不是要隐藏文件的唯一标准。我读过的地方有一个.hidden文件，还配置什么文件被隐藏。

有没有Cocoa / Carbon的方法很容易找到这一点，而不需要重写所有这些逻辑和从各种来源收集信息？

编辑：kLSItemInfoIsInvisible检查似乎适用于一些文件。它似乎不隐藏：

 
 / dev 
 / etc 
 / tmp 
 / var 
 
 
 
 
默认情况下，这些都被Finder隐藏。
解决方案
正如海报指出，它似乎不工作在/ etc和/ var和什么没有，所以我修改了方法。
 
 
 
现在它采用一个isFile布尔，YES表示它的一个文件，NO表示一个目录
  BOOL isInvisible（NSString * str， BOOL isFile）{
 CFURLRef inURL = CFURLCreateWithFileSystemPath（kCFAllocatorDefault，（CFStringRef）str，kCFURLPOSIXPathStyle，isFile）; 
 LSItemInfoRecord itemInfo; 
 LSCopyItemInfoForURL（inURL，kLSRequestAllFlags，& itemInfo）; 
 
 BOOL isInvisible = itemInfo.flags& kLSItemInfoIsInvisible; 
 return（isInvisible！= 0）; 
} 
 
 int main（）{
 NSLog（@％d，isInvisible（@/ etc，NO） // => 1 
 NSLog（@％d，isInvisible（@/ Users，NO））; // => 0 
 NSLog（@％d，isInvisible（@/ mach_kernel，YES））; // => 1 
 
} 
  
 > 
How can I determine whether a certain path points to a hidden file/folder?
NSString *file = @"/my/file/some.where";
BOOL fileIsHidden = // <-- what do I do here?
I know that hidden files are prefixed by a period. This is not the only criteria for a file to be hidden. I've read somewhere that there's a .hidden file that also configures what files are hidden. 

Is there a Cocoa/Carbon way to find this out easily without rewriting all this logic and gathering information from various sources?

EDIT: the kLSItemInfoIsInvisible check seems to work for some files. It doesn't seem to hide:
/dev
/etc
/tmp
/var
All these are hidden by Finder by default.
解决方案
As the poster pointed out, it doesn't seem to work on /etc and /var and what not, so I modified the method.

It now takes a "isFile" boolean, YES means its a file, NO means a directory   
BOOL isInvisible(NSString *str, BOOL isFile){
        CFURLRef inURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, (CFStringRef)str, kCFURLPOSIXPathStyle, isFile);
        LSItemInfoRecord itemInfo;
        LSCopyItemInfoForURL(inURL, kLSRequestAllFlags, &itemInfo);

        BOOL isInvisible = itemInfo.flags & kLSItemInfoIsInvisible;
        return (isInvisible != 0);
    }

    int main(){
           NSLog(@"%d",isInvisible(@"/etc",NO)); // => 1
           NSLog(@"%d",isInvisible(@"/Users",NO)); // => 0
           NSLog(@"%d",isInvisible(@"/mach_kernel",YES)); // => 1

    }
It seems to work on everything now!

                        
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