读取别名文件

查看BDAlias。这是一个很好的可可包装的别名。

http://github.com/rentzsch/bdalias

NSURL bookmarkDataWithContentsOfURL: NSURL URLByResolvingBookmarkData:options:relativeToURL:bookmarkDataIsStale:error:

对于10.6之前的版本,苹果也有一个不错的示例代码 "Resolving aliases" NSString 路径:

NSString *path = <#Get a suitable path#>;
NSString *resolvedPath = nil;

CFURLRef url = CFURLCreateWithFileSystemPath
                   (kCFAllocatorDefault, (CFStringRef)path, kCFURLPOSIXPathStyle, NO);
if (url != NULL)
{
    FSRef fsRef;
    if (CFURLGetFSRef(url, &fsRef))
    {
        Boolean targetIsFolder, wasAliased;
        OSErr err = FSResolveAliasFile (&fsRef, true, &targetIsFolder, &wasAliased);
        if ((err == noErr) && wasAliased)
        {
            CFURLRef resolvedUrl = CFURLCreateFromFSRef(kCFAllocatorDefault, &fsRef);
            if (resolvedUrl != NULL)
            {
                resolvedPath = (NSString*)
                        CFURLCopyFileSystemPath(resolvedUrl, kCFURLPOSIXPathStyle);
                CFRelease(resolvedUrl);
            }
        }
    }
    CFRelease(url);
}

if (resolvedPath == nil)
{
    resolvedPath = [[NSString alloc] initWithString:path];
}

如果您想进入业务部门手动加载数据并对此进行解释,我认为Alias的格式从未被记录在案。

Alias Manager FSRef -基于接口在64位中仍然可用。)

注:我在找一个类似复制的手术。

您可能对核心服务文件管理器的 copying functions ,则,或 NSWorkspace's equivalent operation .

我不确定你指的是符号链接(标准unix),还是苹果的别名发明,但是 this

如果要读取别名数据本身,只需使用posix api打开文件并从中读取即可。你可以在终端上看到这个 cat .

Kone:test eric$ echo  Hi Mom! > foo.txt
Kone:test eric$ ln -s foo.txt foo2.txt  #to contrast symbolic link and alias
<< Make alias in Finder >>
Kone:test eric$ ls -l
total 192
-rw-r--r--  1 eric  staff      8 Apr 23 11:44 foo.txt
-rw-r--r--@ 1 eric  staff  43252 Apr 23 11:45 foo.txt alias
lrwxr-xr-x  1 eric  staff      7 Apr 23 11:44 foo2.txt -> foo.txt
Kone:test eric$ cat foo.txt
Hi Mom!
Kone:test eric$ cat foo2.txt
Hi Mom!
Kone:test eric$ cat foo.txt\ alias 
bookmark88?????AܧUserserictestfoo.txt...yadda yadda yadda for 40 some k