从文件URL确定AFP共享 [英] Determine AFP share from a file URL

问题描述

我写一个应用程序将某些文件复制到某个位置。它允许用户选择始终在AFP共享上的目标。这是用NSOpenPanel来完成的。返回的URL是： file：// localhost / Volumes / Oliver％20Legg's％20Backup / 。

I writing an application to copy some files to a certain location. It allows the user to choose the destination, which is always on an AFP share. This is done with a NSOpenPanel. The URL that gets returned is: file://localhost/Volumes/Oliver%20Legg's%20Backup/.

我想要完成的是当应用程序启动时，如果未安装AFP共享，我希望它自动挂载它。

What I want to accomplish is when the application is started, if the AFP share isn't mounted I want it to automatically mount it. What is the best way to do this?

Get Info命令将服务器列为： afp：// Power Mac G5._afpovertcp.local / Oliver％20Legg's％20Backup 。如何以编程方式从文件URL获取此URL？我想如果我可以得到该URL，我可以使用 FSMountServerVolumeAsync 。这是最好的（最简单，最抽象的）API使用？

The Get Info command lists the server as: afp://Power Mac G5._afpovertcp.local/Oliver%20Legg's%20Backup. How can I programatically get this URL from a file URL? I think if I could get that URL I could mount it using FSMountServerVolumeAsync. Is that the best (easiest, most abstracted) API to use?

推荐答案

为了获得这些信息，没有办法用常规的Cocoa调用。使用 FSCopyURLForVolume（）获取URL，但您需要获取已加载卷的卷引用号，以便使用它：

You need to use some lower-level File Manager routines to get this information, there's no way to do it with regular Cocoa calls. The URL is obtained using FSCopyURLForVolume() but you need to get a volume reference number for the mounted volume in order to use it:

#import <CoreServices/CoreServices.h>

//this is the path to the mounted network volume
NSString* pathToVolume = @"/Volumes/MountedNetworkVolume/";

//get the volume reference number
FSRef pathRef;
FSPathMakeRef((UInt8*)[pathToVolume fileSystemRepresentation],&pathRef,NULL);
FSCatalogInfo catalogInfo;
OSErr osErr = FSGetCatalogInfo(
                               &pathRef,
                               kFSCatInfoVolume,
                               &catalogInfo,
                               NULL,
                               NULL,
                               NULL
                               ) ;
FSVolumeRefNum volumeRefNum = 0;
if(osErr == noErr) 
    volumeRefNum = catalogInfo.volume;

//get the server URL for the volume
CFURLRef serverLocation;
OSStatus result = FSCopyURLForVolume (volumeRefNum,&serverLocation);
if(result == noErr)
    NSLog(@"The server location is: %@",serverLocation);
else
    NSLog(@"An error occurred: %i",result);
CFRelease(serverLocation);

FSMountServerVolumeAsync 绝对是正确的挂载方式一个远程卷。

FSMountServerVolumeAsync is definitely the correct way to mount a remote volume.

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