1/*
2 * Copyright (C) 2005, 2007, 2008, 2011 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#import "WebNSAttributedStringExtras.h"
27
28namespace WebCore {
29
30NSAttributedString *attributedStringByStrippingAttachmentCharacters(NSAttributedString *attributedString)
31{
32    NSRange attachmentRange;
33    NSString *originalString = [attributedString string];
34    static NSString *attachmentCharString = nil;
35
36    if (!attachmentCharString) {
37        unichar chars[2];
38        if (!attachmentCharString) {
39            chars[0] = NSAttachmentCharacter;
40            chars[1] = 0;
41            attachmentCharString = [[NSString alloc] initWithCharacters:chars length:1];
42        }
43    }
44
45    attachmentRange = [originalString rangeOfString:attachmentCharString];
46    if (attachmentRange.location != NSNotFound && attachmentRange.length > 0) {
47        NSMutableAttributedString *newAttributedString = [[attributedString mutableCopyWithZone:NULL] autorelease];
48
49        while (attachmentRange.location != NSNotFound && attachmentRange.length > 0) {
50            [newAttributedString replaceCharactersInRange:attachmentRange withString:@""];
51            attachmentRange = [[newAttributedString string] rangeOfString:attachmentCharString];
52        }
53        return newAttributedString;
54    }
55
56    return attributedString;
57}
58
59}
60