Fixes for import/export

Monotone-Parent: 3e7ac334a4ea19aa4ec2dcbc525628005ca75fb7
Monotone-Revision: d124c012f70febcfcbb9a2b5d4f3a20a7a001d7a

Monotone-Author: crobert@inverse.ca
Monotone-Date: 2009-09-09T13:31:45
Monotone-Branch: ca.inverse.sogo

SoObjects/SOGo/NSString+Utilities.m

@@ -384,4 +384,42 @@ static NSMutableCharacterSet *urlStartChars = nil;
 }
 #endif
 
+static NSMutableCharacterSet *safeLDIFChars = nil;
+static NSMutableCharacterSet *safeLDIFStartChars = nil;
+
+- (void) _initSafeLDIFChars
+{
+  safeLDIFChars = [NSMutableCharacterSet new];
+  [safeLDIFChars addCharactersInRange: NSMakeRange (0x01, 9)];
+  [safeLDIFChars addCharactersInRange: NSMakeRange (0x0b, 2)];
+  [safeLDIFChars addCharactersInRange: NSMakeRange (0x0e, 114)];
+
+  safeLDIFStartChars = [safeLDIFChars mutableCopy];
+  [safeLDIFStartChars removeCharactersInString: @" :<"];
+}
+
+- (BOOL) _isLDIFSafe
+{
+  int count, max;
+  BOOL rc;
+
+  if (!safeLDIFChars)
+    [self _initSafeLDIFChars];
+
+  rc = YES;
+
+  max = [self length];
+  if (max > 0)
+    {
+      if ([safeLDIFStartChars characterIsMember: [self characterAtIndex: 0]])
+        for (count = 1; rc && count < max; count++)
+          rc = [safeLDIFChars
+                 characterIsMember: [self characterAtIndex: count]];
+      else
+        rc = NO;
+    }
+  
+  return rc;
+}
+
 @end