如何使文件在Finder中使用objective-c不可见 [英] How to make a file invisible in Finder using objective-c

问题描述

我需要隐藏文件在finder以及在聚光灯下，如果可能使用objective-c或使用C调用。

I need to hide the file in finder as well as in spotlight if possible using objective-c or using C calls.

感谢

推荐答案

调用。这是相当原始的代码，只适用于一些文件系统，并且缺少错误检查。

You can set the invisibility attribute through some C calls. This is pretty raw code that only works on some file systems and is missing error checking.

#include <assert.h>
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include <sys/attr.h>
#include <sys/errno.h>
#include <unistd.h>
#include <sys/vnode.h>

typedef struct attrlist attrlist_t;

struct FInfoAttrBuf {
    u_int32_t length;
    fsobj_type_t objType;

    union {
        char rawBytes[32];

        struct {
            FileInfo info;
            ExtendedFileInfo extInfo;
        } file;

        struct {
            FolderInfo info;
            ExtendedFolderInfo extInfo;
        } folder;
    } finderInfo;
};
typedef struct FInfoAttrBuf FInfoAttrBuf;


static int SetFileInvisibility(const char *path, int isInvisible) {
    attrlist_t attrList;
    FInfoAttrBuf attrBuf;

    memset(&attrList, 0, sizeof(attrList));
    attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
    attrList.commonattr  = ATTR_CMN_OBJTYPE | ATTR_CMN_FNDRINFO;

    int err = getattrlist(path, &attrList, &attrBuf, sizeof(attrBuf), 0);
    if (err != 0)
        return errno;

    // attrBuf.objType = (VREG | VDIR), inconsequential for invisibility

    UInt16 flags = CFSwapInt16BigToHost(attrBuf.finderInfo.file.info.finderFlags);

    if (isInvisible)
        flags |= kIsInvisible;
    else
        flags &= (~kIsInvisible);

    attrBuf.finderInfo.file.info.finderFlags = CFSwapInt16HostToBig(flags);

    attrList.commonattr = ATTR_CMN_FNDRINFO;
    err = setattrlist(path, &attrList, attrBuf.finderInfo.rawBytes, sizeof(attrBuf.finderInfo.rawBytes), 0);

    return err;
}

或者您可以通过 NSURL 如果你可以定义Snow Leopard，它抽象出每个文件系统如何处理和处理扩展属性。

or you can go through NSURL if you can target Snow Leopard which abstracts away how each file system processes and handles extended attributes.

NSURL *url = [NSURL fileURLWithPath:path];
[url setResourceValue:[NSNumber numberWithBool:YES] forKey:NSURLIsHiddenKey error:NULL];

这篇关于如何使文件在Finder中使用objective-c不可见的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！