X-Git-Url: https://git.yukkurigames.com/?p=enjoyable.git;a=blobdiff_plain;f=Categories%2FNSFileManager%2BUniqueNames.m;fp=Categories%2FNSFileManager%2BUniqueNames.m;h=c7eb76896bba00891d5a612823c14a83b234f376;hp=0000000000000000000000000000000000000000;hb=0064c1fbff36795885a9724081af2a17d83c20a3;hpb=56d825ba259066d847a9fc3f9c8c0c0a362a1507

diff --git a/Categories/NSFileManager+UniqueNames.m b/Categories/NSFileManager+UniqueNames.m
new file mode 100644
index 0000000..c7eb768
--- /dev/null
+++ b/Categories/NSFileManager+UniqueNames.m
@@ -0,0 +1,31 @@
+//
+//  NSFileManager+UniqueNames.m
+//  Enjoyable
+//
+//  Created by Joe Wreschnig on 3/7/13.
+//
+//
+
+#import "NSFileManager+UniqueNames.h"
+
+@implementation NSFileManager (UniqueNames)
+
+- (NSURL *)generateUniqueURLWithBase:(NSURL *)canonical {
+    // Punt for cases that are just too hard.
+    if (!canonical.isFileURL)
+        return canonical;
+
+    NSString *trying = canonical.path;
+    NSString *dirname = [trying stringByDeletingLastPathComponent];
+    NSString *basename = [trying.lastPathComponent stringByDeletingPathExtension];
+    NSString *extension = trying.pathExtension;
+    int index = 1;
+    while ([self fileExistsAtPath:trying] && index < 10000) {
+        NSString *indexName = [NSString stringWithFormat:@"%@ (%d)", basename, index++];
+        indexName = [indexName stringByAppendingPathExtension:extension];
+        trying = [dirname stringByAppendingPathComponent:indexName];
+    }
+    return [NSURL fileURLWithPath:trying];
+}
+
+@end