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Side by Side Diff: third_party/WebKit/Source/wtf/text/UTF8.h

Issue 2764243002: Move files in wtf/ to platform/wtf/ (Part 9). (Closed)
Patch Set: Rebase. Created 3 years, 9 months ago
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1 /* 1 // Copyright 2017 The Chromium Authors. All rights reserved.
2 * Copyright (C) 2007 Apple Inc. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be
3 * 3 // found in the LICENSE file.
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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25 4
26 #ifndef WTF_UTF8_h 5 #include "platform/wtf/text/UTF8.h"
27 #define WTF_UTF8_h
28 6
29 #include "wtf/WTFExport.h" 7 // The contents of this header was moved to platform/wtf as part of
30 #include "wtf/text/Unicode.h" 8 // WTF migration project. See the following post for details:
31 9 // https://groups.google.com/a/chromium.org/d/msg/blink-dev/tLdAZCTlcAA/bYXVT8gY CAAJ
32 namespace WTF {
33 namespace Unicode {
34
35 typedef enum {
36 conversionOK, // conversion successful
37 sourceExhausted, // partial character in source, but hit end
38 targetExhausted, // insuff. room in target for conversion
39 sourceIllegal // source sequence is illegal/malformed
40 } ConversionResult;
41
42 // These conversion functions take a "strict" argument. When this flag is set to
43 // strict, both irregular sequences and isolated surrogates will cause an error.
44 // When the flag is set to lenient, both irregular sequences and isolated
45 // surrogates are converted.
46 //
47 // Whether the flag is strict or lenient, all illegal sequences will cause an
48 // error return. This includes sequences such as: <F4 90 80 80>, <C0 80>, or
49 // <A0> in UTF-8, and values above 0x10FFFF in UTF-32. Conformant code must
50 // check for illegal sequences.
51 //
52 // When the flag is set to lenient, characters over 0x10FFFF are converted to
53 // the replacement character; otherwise (when the flag is set to strict) they
54 // constitute an error.
55
56 WTF_EXPORT ConversionResult convertUTF8ToUTF16(const char** sourceStart,
57 const char* sourceEnd,
58 UChar** targetStart,
59 UChar* targetEnd,
60 bool* isSourceAllASCII = 0,
61 bool strict = true);
62
63 WTF_EXPORT ConversionResult convertLatin1ToUTF8(const LChar** sourceStart,
64 const LChar* sourceEnd,
65 char** targetStart,
66 char* targetEnd);
67
68 WTF_EXPORT ConversionResult convertUTF16ToUTF8(const UChar** sourceStart,
69 const UChar* sourceEnd,
70 char** targetStart,
71 char* targetEnd,
72 bool strict = true);
73
74 WTF_EXPORT unsigned calculateStringHashAndLengthFromUTF8MaskingTop8Bits(
75 const char* data,
76 const char* dataEnd,
77 unsigned& dataLength,
78 unsigned& utf16Length);
79
80 WTF_EXPORT bool equalUTF16WithUTF8(const UChar* a,
81 const UChar* aEnd,
82 const char* b,
83 const char* bEnd);
84 WTF_EXPORT bool equalLatin1WithUTF8(const LChar* a,
85 const LChar* aEnd,
86 const char* b,
87 const char* bEnd);
88
89 } // namespace Unicode
90 } // namespace WTF
91
92 #endif // WTF_UTF8_h
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