cocoa - CoreService 框架有关于 PBFSCopyFileSync 的详细文档或示例代码吗？

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我正在尝试替换已弃用的 API PBHCopyFileSync与 PBFSCopyFileSync正如 Files.h 中的推荐 header 。

令人惊讶的是，Apple 对于这个新 API 只说了几行:

PBFSCopyFileSync
Duplicates a file and optionally renames it.

OSStatus PBFSCopyFileSync (
   FSRefParamPtr paramBlock
);
Availability
Available in Mac OS X v10.5 and later.
Declared In
Files.h

而且我找不到有关如何使用此功能的更多信息。

特别是参数FSRefParamPtr应该填写什么？我尝试了下面的代码，但始终收到 -50 的错误。

paramErr     -50    
Invalid value passed in a parameter. Your application
passed an invalid parameter for dialog options.

这是代码:

OSStatus res = noErr;

FSRefParam param;

FSRef srcFile, dstDir, newFile;

const char *src = "$PATH_TO_A_EXISTING_FILE";
const char *dst = "/tmp";

res = FSPathMakeRef((const UInt8 *)src, &srcFile, NULL);
assert(res == noErr);

res = FSPathMakeRef((const UInt8 *)dst, &dstDir, NULL);
assert(res == noErr);

memset(&param, 0, sizeof(FSRefParam));
param.ioCompletion = NULL;
param.ref = &srcFile;
param.parentRef = &dstDir;
param.newRef = &newFile;

res = PBFSCopyFileSync(&param);

if (res == noErr) {
    printf("SUCCESS!!!\n");
} else {
    printf("FAILED!!! %d\n", res);
}

那么，有谁知道有关此 API 的一些详细文档或示例代码吗？或者是否有更流行/有记录的 C++ API 用于复制文件？

谢谢。

Answer 1

Quinn “The Eskimo!” says:

Always use FSCopyObjectSync. PBFSCopyFileSync/PBHCopyFileSync are low-level routines that are exported for legacy reasons. FSCopyObjectSync is a proper API that takes care of all of the nittygritty details of copying.

Notably, both PBFSCopyFileSync and PBHCopyFileSync are parameter block routines, with no nice wrappers. You should consider that a hint (-: