On Mon, 1 Sep 2008 18:46:41 +0800, XiaoGang Li wrote:
hi, list, I have an uninstaller application , which is used to
delete
the files installed; and also i have a file which located in the
current
user's directory, like the ~/Library/LaunchAgents/com.****.plist.
and how
can i delete this kind of file, i have tried the
AuthorizationExecuteWithPrivileges
API, it seems not workable, do i give a wrong flag value or
something else?
here is my code piece, any comments will be appreciated.
It would probably be a lot easier to use the NSFileManager method
removeItemAtPath:error:
NSFileManager *defaultManager = [NSFileManager defaultManager];
NSArray *searchPaths;
searchPaths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory,
NSUserDomainMask,
TRUE);
NSString *libraryPath = [searchPaths lastObject];
NSString *itemDirectory;
NSString *itemPath;
itemDirectory = [libraryPath stringByAppendingPathComponent:
@"LaunchAgents"];
itemPath = [itemDirectory stringByAppendingPathComponent:
@"com.hp.printerAgent.plist"];
if([defaultManager fileExistsAtPath:itemPath]){
NSError *theError;
[defaultManager removeItemAtPath:itemPath error:&theError];
}
Note that I avoided hard-coded paths by using
NSSearchPathForDirectoriesInDomains. This is important because hard-
coded paths can break in many ways, such as when the user is on a non-
english system. By using the proper function for finding standardized
directories you avoid as much hard-coded paths as possible.
In general I try to avoid using terminal commands in an application
when there is a Cocoa or Carbon method that does the same thing. By
using the library methods you are likely to have a solution which is
more portable and less fragile than by using terminal commands.
- Ken Bruno
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