我移植了一些旧的NSURL
代码,以便使用NSFileManager
,kIsStationery
和朋友。除了在文件上设置和获取Finder FSRef
位之外,一切都有效。
有没有办法在不退回已弃用printf("%d", (int)pow(2, 10));
方法的情况下执行此操作?
答案 0 :(得分:1)
所以经过一些研究后,这里是设置和获取文具位的答案:
struct FileInfoBuf
{
u_int32_t info_length;
union
{
u_int32_t padding[8];
struct
{
u_int32_t type;
u_int32_t creator;
u_int16_t fdFlags;
u_int16_t location;
u_int32_t padding[4];
}
info;
}
data;
};
bool IsStationeryPad(const std::string& path)
{
attrlist attrList;
FileInfoBuf fileInfo;
attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
attrList.reserved = 0;
attrList.commonattr = ATTR_CMN_FNDRINFO;
attrList.volattr = 0;
attrList.dirattr = 0;
attrList.fileattr = 0;
attrList.forkattr = 0;
if (getattrlist(path.c_str(), &attrList, &fileInfo, sizeof(fileInfo), FSOPT_NOFOLLOW) == noErr)
{
return (CFSwapInt16BigToHost(fileInfo.data.info.fdFlags) & kIsStationery);
}
return false;
}
void SetStationeryPad(const std::string& path, bool isStationery)
{
OSErr err = noErr;
attrlist attrList;
FileInfoBuf fileInfo;
attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
attrList.reserved = 0;
attrList.commonattr = ATTR_CMN_FNDRINFO;
attrList.volattr = 0;
attrList.dirattr = 0;
attrList.fileattr = 0;
attrList.forkattr = 0;
err = getattrlist(path.c_str(), &attrList, &fileInfo, sizeof(fileInfo), FSOPT_NOFOLLOW);
if (err == noErr)
{
fileInfo.data.info.fdFlags |= CFSwapInt16HostToBig(kIsStationery);
setattrlist(path.c_str(), &attrList, &fileInfo.data, sizeof(fileInfo.data), FSOPT_NOFOLLOW);
}
}
请注意,此代码中没有真正的错误检查。此外,应用程序可能不应该设置此位,这实际上是用户决定,并通过Finder控制。