Creating temporary directories in Cocoa/Objective-C

gistfile1.m

// Create a unique temporary direction
// This procedure is safe from a number of potential problems including
// concurrency, file permission, security, and persistence issues
// Taken from http://cocoawithlove.com/2009/07/temporary-files-and-folders-in-cocoa.html

NSString *tmpdirTemplate = [NSTemporaryDirectory()
			    stringByAppendingPathComponent:@"app.XXXXXX"];
const char *tmpdirTemplateCStr = [tmpdirTemplate fileSystemRepresentation];
char *tmpdirCStr = (char *) malloc(strlen(tmpdirTemplateCStr) + 1);
strcpy(tmpdirCStr, tmpdirTemplateCStr);
char *result = mkdtemp(tmpdirCStr);
if (!result) {
    // TODO: Handle case that mkdtemp fails
}
NSString *tempDirectoryPath = [[NSFileManager defaultManager]
			       stringWithFileSystemRepresentation:tmpdirCStr
			       length:strlen(tmpdirCStr)];
free(tmpdirCStr);