summaryrefslogtreecommitdiffstats
path: root/sal/textenc/converter.cxx
blob: 60e6a33837085cb943a3f997a0d6924d8cea7016 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <sal/config.h>

#include <o3tl/safeint.hxx>
#include <rtl/textcvt.h>
#include <sal/types.h>

#include "converter.hxx"
#include "tenchelp.hxx"
#include "unichars.hxx"

sal::detail::textenc::BadInputConversionAction
sal::detail::textenc::handleBadInputTextToUnicodeConversion(
    bool bUndefined, bool bMultiByte, char cByte, sal_uInt32 nFlags,
    sal_Unicode ** pDestBufPtr, const sal_Unicode * pDestBufEnd, sal_uInt32 * pInfo)
{
    *pInfo |= bUndefined
        ? (bMultiByte
           ? RTL_TEXTTOUNICODE_INFO_MBUNDEFINED
           : RTL_TEXTTOUNICODE_INFO_UNDEFINED)
        : RTL_TEXTTOUNICODE_INFO_INVALID;
    switch (nFlags
            & (bUndefined
               ? (bMultiByte
                  ? RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_MASK
                  : RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MASK)
               : RTL_TEXTTOUNICODE_FLAGS_INVALID_MASK))
    {
    case RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR:
    case RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR:
    case RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR:
        *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR;
        return BAD_INPUT_STOP;

    case RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_IGNORE:
    case RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_IGNORE:
    case RTL_TEXTTOUNICODE_FLAGS_INVALID_IGNORE:
        return BAD_INPUT_CONTINUE;

    case RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MAPTOPRIVATE:
        if (*pDestBufPtr != pDestBufEnd)
        {
            *(*pDestBufPtr)++ = RTL_TEXTCVT_BYTE_PRIVATE_START
                | static_cast<unsigned char>(cByte);
            return BAD_INPUT_CONTINUE;
        }
        else
            return BAD_INPUT_NO_OUTPUT;

    default: // RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_DEFAULT,
             // RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT,
             // RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT
        if (*pDestBufPtr != pDestBufEnd)
        {
            *(*pDestBufPtr)++ = RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER;
            return BAD_INPUT_CONTINUE;
        }
        else
            return BAD_INPUT_NO_OUTPUT;
    }
}

sal::detail::textenc::BadInputConversionAction
sal::detail::textenc::handleBadInputUnicodeToTextConversion(
    bool bUndefined, sal_uInt32 nUtf32, sal_uInt32 nFlags, char ** pDestBufPtr,
    const char * pDestBufEnd, sal_uInt32 * pInfo, char const * pPrefix,
    sal_Size nPrefixLen, bool * pPrefixWritten)
{
    // TODO! RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE
    // RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACESTR

    char cReplace;

    if (bUndefined)
    {
        if (ImplIsControlOrFormat(nUtf32))
        {
            if ((nFlags & RTL_UNICODETOTEXT_FLAGS_CONTROL_IGNORE) != 0)
                nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE;
        }
        else if (ImplIsPrivateUse(nUtf32))
        {
            if ((nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_IGNORE) != 0)
                nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE;
            else if ((nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_MAPTO0) != 0)
                nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0;
        }
        else if (ImplIsZeroWidth(nUtf32))
        {
            if ((nFlags & RTL_UNICODETOTEXT_FLAGS_NONSPACING_IGNORE) != 0)
                nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE;
        }
    }
    *pInfo |= bUndefined ? RTL_UNICODETOTEXT_INFO_UNDEFINED :
                           RTL_UNICODETOTEXT_INFO_INVALID;
    switch (nFlags & (bUndefined ? RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK :
                                   RTL_UNICODETOTEXT_FLAGS_INVALID_MASK))
    {
    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR:
    case RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR:
        *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR;
        return BAD_INPUT_STOP;

    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE:
    case RTL_UNICODETOTEXT_FLAGS_INVALID_IGNORE:
        if (pPrefixWritten)
            *pPrefixWritten = false;
        return BAD_INPUT_CONTINUE;

    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0:
    case RTL_UNICODETOTEXT_FLAGS_INVALID_0:
        cReplace = 0;
        break;

    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_QUESTIONMARK:
    case RTL_UNICODETOTEXT_FLAGS_INVALID_QUESTIONMARK:
    default: // RTL_UNICODETOTEXT_FLAGS_UNDEFINED_DEFAULT,
             // RTL_UNICODETOTEXT_FLAGS_INVALID_DEFAULT
        cReplace = '?';
        break;

    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_UNDERLINE:
    case RTL_UNICODETOTEXT_FLAGS_INVALID_UNDERLINE:
        cReplace = '_';
        break;
    }
    if (o3tl::make_unsigned(pDestBufEnd - *pDestBufPtr) > nPrefixLen)
    {
        while (nPrefixLen-- > 0)
            *(*pDestBufPtr)++ = *pPrefix++;
        *(*pDestBufPtr)++ = cReplace;
        if (pPrefixWritten)
            *pPrefixWritten = true;
        return BAD_INPUT_CONTINUE;
    }
    return BAD_INPUT_NO_OUTPUT;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */