Question

我正在尝试使用BSD copyfile（...）将文件复制到已安装的AFP共享（/ Volumes / exchange），并使用如下的Obj-C ++代码：

最小例子：

#include <string>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <copyfile.h>
#include <stdio.h>

#import <Cocoa/Cocoa.h>

int copyfile_callback(int what, int stage, copyfile_state_t state, const char * src, const char * dst, void * ctx);
void copy_file(const std::string& src, const std::string& dst);
NSString* StringToNSString ( const std::string& Str );

int main ()
{
    [NSAutoreleasePool new];
    [NSApplication sharedApplication];
    [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
    id menubar = [[NSMenu new] autorelease];
    id appMenuItem = [[NSMenuItem new] autorelease];
    [menubar addItem:appMenuItem];
    [NSApp setMainMenu:menubar];
    id appMenu = [[NSMenu new] autorelease];
    id appName = [[NSProcessInfo processInfo] processName];
    id quitTitle = [@"Quit " stringByAppendingString:appName];
    id quitMenuItem = [[[NSMenuItem alloc] initWithTitle:quitTitle
        action:@selector(terminate:) keyEquivalent:@"q"] autorelease];
    [appMenu addItem:quitMenuItem];
    [appMenuItem setSubmenu:appMenu];
    id window = [[[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 200, 200)
        styleMask:NSTitledWindowMask backing:NSBackingStoreBuffered defer:NO]
            autorelease];
    [window cascadeTopLeftFromPoint:NSMakePoint(20,20)];
    [window setTitle:appName];
    [window makeKeyAndOrderFront:nil];

    copy_file(
      "copyfile.mm",
      "/Volumes/exchange/filename(\"[~!@#$%^&*,.']\").MP4"
    );

    [NSApp activateIgnoringOtherApps:YES];
    [NSApp run];
    return 0;
}

void copy_file(const std::string& fromPath, const std::string& toPath)
{
    NSLog(@"copyfile: %s -> %s", fromPath.c_str(), toPath.c_str());
    copyfile_state_t s = copyfile_state_alloc();
    copyfile_state_set(s, COPYFILE_STATE_STATUS_CB, (void*)&copyfile_callback);
    int returnCode = copyfile(fromPath.c_str(), toPath.c_str(), s, COPYFILE_ALL);
    if( returnCode ) {
        NSLog(@"copyfile error code: %d, errno=%d", returnCode, errno);
    }
    copyfile_state_free(s);
}

int copyfile_callback(int what, int stage, copyfile_state_t state, const char * src, const char * dst, void * ctx)
{
    bool bContinue = true;
    switch( what ) {
        case COPYFILE_COPY_DATA:
            if( stage == COPYFILE_PROGRESS ) {
                int src_fd;
                off_t bytes_completed = 0L, total_bytes = 0L;
                copyfile_state_get(state, COPYFILE_STATE_COPIED, (void*)&bytes_completed);
                copyfile_state_get(state, COPYFILE_STATE_SRC_FD, (void*)&src_fd);
                struct stat fstat_info;
                if( src_fd > 0 && 0 == fstat(src_fd, &fstat_info) ) {
                    total_bytes = fstat_info.st_size;
                }
                NSLog(@"copyfile_callback: Copied %lld/%lld bytes so far.", bytes_completed, total_bytes);

            } else if( stage == COPYFILE_ERR ) {
                NSLog(@"copyfile: COPYFILE_COPY_DATA COPYFILE_ERR");
                bContinue = false;
            }
            break;
        case COPYFILE_ERR:
            bContinue = false;
            break;
    }
    return bContinue ? COPYFILE_CONTINUE : COPYFILE_QUIT;
}

NSString* StringToNSString ( const std::string& Str )
{
    NSString *pString = [NSString stringWithCString:Str.c_str()
                                           encoding:[NSString defaultCStringEncoding]
                        ];
    return pString;
}

将此示例另存为copyfile.mm并使用：

进行编译

g++ -framework Cocoa -x objective-c++ copyfile.mm -o copyfile

除非我的目标文件名（toPath）包含双引号符号，否则它可以正常工作。然后我得到

returnCode == -1;
errno == 22; // EINVAL

它也适用于普通的C ++，但是使用Obj-C ++失败了。使用Obj-C ++ - 我还在system.log中看到以下消息：

5/21/13 11:47:51.314 PM myAppName: open on /Volumes/exchange/filename("[~!@#$%^&*,.']").MP4: Invalid argument

Mac OS 10.7.5和gcc 4.2.1：

$ g++ -v
Using built-in specs.
Target: i686-apple-darwin11
Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.11~148/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.11~148/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1
Thread model: posix
gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)

Answer 1

正如Eric Postpischil指出的那样（谢谢！） - 这是网络共享的一个问题。升级到最新的netatalk版本并将正确的设置设置为netatalk配置后，我的代码无需任何更改即可运行。

（对不起，迟到的回复，伙计们：）

Mac OS 10.7.5 BSD copyfile（）EINVAL在复制名称中带有双引号的文件时

1 个答案: