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 "config.h"
27#import "WebNSAttributedStringExtras.h"
28
29#if PLATFORM(IOS)
30enum {
31    NSAttachmentCharacter = 0xfffc    /* To denote attachments. */
32};
33#endif
34
35namespace WebCore {
36
37NSAttributedString *attributedStringByStrippingAttachmentCharacters(NSAttributedString *attributedString)
38{
39    NSRange attachmentRange;
40    NSString *originalString = [attributedString string];
41    static NSString *attachmentCharString = nil;
42
43    if (!attachmentCharString) {
44        unichar chars[2];
45        if (!attachmentCharString) {
46            chars[0] = NSAttachmentCharacter;
47            chars[1] = 0;
48            attachmentCharString = [[NSString alloc] initWithCharacters:chars length:1];
49        }
50    }
51
52    attachmentRange = [originalString rangeOfString:attachmentCharString];
53    if (attachmentRange.location != NSNotFound && attachmentRange.length > 0) {
54        NSMutableAttributedString *newAttributedString = [[attributedString mutableCopyWithZone:NULL] autorelease];
55
56        while (attachmentRange.location != NSNotFound && attachmentRange.length > 0) {
57            [newAttributedString replaceCharactersInRange:attachmentRange withString:@""];
58            attachmentRange = [[newAttributedString string] rangeOfString:attachmentCharString];
59        }
60        return newAttributedString;
61    }
62
63    return attributedString;
64}
65
66}
67