Hi!Thank you for the code, Chaitanya. Unfortunately, unless I'm missing something, I'm not sure that it'll work in my particular case, since I want sequential numbering, rather than random numbering; in other words, this isn't for a unique identifier of sorts, but rather to indicate how many existing files there are with the same prefix ("Picture", etc.). I do appreciate, however, that you took the time to write that!
Cheers,
Andrew
On Nov 23, 2008, at 11:47 AM, chaitanya pandit wrote:
I'm not sure if you guys want the prefix to be "Picture" etc. but i simply get a random number using rand(); and check if a file exists with that name.Heres a code snippet, + (NSString *)getUniqueNameForFile: (NSString *)aFilePath { // Initialise the return path NSString *pathToReturn = aFilePath;// Check if a file at the given path already exist and get a unique path for the same BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:aFilePath];while (fileExists) {NSString *pathExcludingFileName = [pathToReturn stringByDeletingLastPathComponent];NSString *lastPathComponent = [pathToReturn lastPathComponent]; NSString *fileExtension = [lastPathComponent pathExtension];NSString *fileName = [lastPathComponent stringByDeletingPathExtension];fileName = [NSString stringWithFormat:@"%d",rand()]; // Add the path extension only if one exists if ([fileExtension length] >0)pathToReturn = [pathExcludingFileName stringByAppendingPathComponent:[fileName stringByAppendingPathExtension:fileExtension]];elsepathToReturn = [pathExcludingFileName stringByAppendingPathComponent:fileName]; fileExists = [[NSFileManager defaultManager] fileExistsAtPath:pathToReturn];} return pathToReturn; }I'd be happy to know about any suggestions that may optimize the above code.-Chaitanya On 24-Nov-08, at 12:30 AM, Jean-Nicolas Jolivet wrote:You're right, hadn't thought of that! Well, I'll implement it like that for now but I'll keep an eye on this thread, see if anyone has a better idea! :)On 23-Nov-08, at 1:55 PM, Andrew Merenbach wrote:Hi,I used something pretty much identical in a program of mine, but quickly realized that, although it worked, it wasn't scalable enough -- it made me feel a little uneasy. For instance, if you are saving a file over a slow network, it'll have to check each file's existence every time -- but it could take significantly longer for each file in such a case. I'm not sure what would be best, frankly. I hope that someone else will chime in with a built-in solution!Best, Andrew On Nov 23, 2008, at 10:49 AM, Jean-Nicolas Jolivet wrote:mmm I guess I'm a little slow today hehe... something like this would probably work (pseudo-code): cnt = 1 filename = "Picture " + cnt while(file exist (filename)) cnt ++ On 23-Nov-08, at 1:45 PM, Jean-Nicolas Jolivet wrote:I would love to implement something like the default screenshot utility for OS X does when it names its pictures.. (i.e. Picture 1, Picture 2, Picture 3.. etc.)I was wondering if there's already something in place to do that? If not, I don't mind implementing it myself but I can't really think of a simple way to do it? Counting the files in a directory is not really a reliable way to do it (i.e. if you have Picture 2 and Picture 3 in a directory, your count is 2... try naming your new picture Picture 3 and it overwrites the existing Picture 3 ...)I'm fairly good with RegEx so it would be easy to parse filenames for numbers I guess but it seems a little overkill for such a trivial task... (especially since my app wouldn't use Regex for anything else so, I dont want to add a regex framework just for that)...Any ideas would be appreciated? Jean-Nicolas Jolivet [EMAIL PROTECTED] http://www.silverscripting.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)Please do not post admin requests or moderator comments to the list.Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/silvertab%40videotron.ca This email sent to [EMAIL PROTECTED]Jean-Nicolas Jolivet [EMAIL PROTECTED] http://www.silverscripting.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)Please do not post admin requests or moderator comments to the list.Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/andrew.merenbach%40ucla.edu This email sent to [EMAIL PROTECTED]Jean-Nicolas Jolivet [EMAIL PROTECTED] http://www.silverscripting.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/chaitanya%40expersis.com This email sent to [EMAIL PROTECTED]
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