我试图使用BSD Copyfile(…)将一个文件复制到一个安装的AFP共享(/卷/交换)中,并用一个Obj-C++代码如下:
最小示例:
#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(\"[~!@#$%^&*,.']\").MP4"
);
[NSApp activateIgnoringOtherApps:YES];
[NSApp run];
return 0;
}
void copy_file(const std::string& fromPath, const std::string& toPath)
{
NSLog(@"copyfile: %s -> %s", fromPath.c_str(), toPath.c_str());
copyfile_state_t s = copyfile_state_alloc();
copyfile_state_set(s, COPYFILE_STATE_STATUS_CB, (void*)©file_callback);
int returnCode = copyfile(fromPath.c_str(), toPath.c_str(), s, COPYFILE_ALL);
if( returnCode ) {
NSLog(@"copyfile error code: %d, errno=%d", returnCode, errno);
}
copyfile_state_free(s);
}
int copyfile_callback(int what, int stage, copyfile_state_t state, const char * src, const char * dst, void * ctx)
{
bool bContinue = true;
switch( what ) {
case COPYFILE_COPY_DATA:
if( stage == COPYFILE_PROGRESS ) {
int src_fd;
off_t bytes_completed = 0L, total_bytes = 0L;
copyfile_state_get(state, COPYFILE_STATE_COPIED, (void*)&bytes_completed);
copyfile_state_get(state, COPYFILE_STATE_SRC_FD, (void*)&src_fd);
struct stat fstat_info;
if( src_fd > 0 && 0 == fstat(src_fd, &fstat_info) ) {
total_bytes = fstat_info.st_size;
}
NSLog(@"copyfile_callback: Copied %lld/%lld bytes so far.", bytes_completed, total_bytes);
} else if( stage == COPYFILE_ERR ) {
NSLog(@"copyfile: COPYFILE_COPY_DATA COPYFILE_ERR");
bContinue = false;
}
break;
case COPYFILE_ERR:
bContinue = false;
break;
}
return bContinue ? COPYFILE_CONTINUE : COPYFILE_QUIT;
}
NSString* StringToNSString ( const std::string& Str )
{
NSString *pString = [NSString stringWithCString:Str.c_str()
encoding:[NSString defaultCStringEncoding]
];
return pString;
}
将此示例另存为
copyfile.mm
并使用以下命令编译:g++ -framework Cocoa -x objective-c++ copyfile.mm -o copyfile
除非目标文件名(toPath)包含双引号符号,否则工作正常。然后我得到
returnCode == -1;
errno == 22; // EINVAL
它也适用于普通的C++,但在Obj-C++中失败了。用Obj-c++——我也看到了Stase.Loo:下面的消息:
5/21/13 11:47:51.314 PM myAppName: open on /Volumes/exchange/filename("[~!@#$%^&*,.']").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)
最佳答案
正如埃里克·波斯皮希尔所指出的(谢谢!)-这是网络共享的问题。在升级到最新的netatalk版本并将正确设置设置为netatalk config之后,我的代码可以正常工作,而无需任何更改。
(抱歉回信晚了,各位:)