summaryrefslogtreecommitdiff
path: root/stoc/source/uriproc/ExternalUriReferenceTranslator.cxx
blob: f1f102311c7ed326eb229ce1b105fd44e3d4982f (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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
/* -*- 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 <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/uno/Exception.hpp>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/uno/XInterface.hpp>
#include <com/sun/star/uri/XExternalUriReferenceTranslator.hpp>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <cppuhelper/weak.hxx>
#include <osl/thread.h>
#include <rtl/string.h>
#include <rtl/textenc.h>
#include <rtl/uri.h>
#include <rtl/uri.hxx>
#include <rtl/ustrbuf.hxx>
#include <rtl/ustring.hxx>
#include <sal/types.h>

namespace {

class Translator:
    public cppu::WeakImplHelper<
        css::lang::XServiceInfo, css::uri::XExternalUriReferenceTranslator>
{
public:
    Translator() {}

    Translator(const Translator&) = delete;
    Translator& operator=(const Translator&) = delete;

    virtual OUString SAL_CALL getImplementationName() override;

    virtual sal_Bool SAL_CALL supportsService(OUString const & serviceName) override;

    virtual css::uno::Sequence< OUString > SAL_CALL
    getSupportedServiceNames() override;

    virtual OUString SAL_CALL
    translateToInternal(OUString const & externalUriReference) override;

    virtual OUString SAL_CALL
    translateToExternal(OUString const & internalUriReference) override;

private:
    virtual ~Translator() override {}
};

OUString Translator::getImplementationName()
{
    return OUString("com.sun.star.comp.uri.ExternalUriReferenceTranslator");
}

sal_Bool Translator::supportsService(OUString const & serviceName)
{
    return cppu::supportsService(this, serviceName);
}

css::uno::Sequence< OUString > Translator::getSupportedServiceNames()
{
    css::uno::Sequence< OUString > s { "com.sun.star.uri.ExternalUriReferenceTranslator" };
    return s;
}

OUString Translator::translateToInternal(
    OUString const & externalUriReference)
{
    if (!externalUriReference.matchIgnoreAsciiCase("file:/"))
    {
        return externalUriReference;
    }
    sal_Int32 i = RTL_CONSTASCII_LENGTH("file:");
    OUStringBuffer buf;
    buf.appendCopy(externalUriReference, 0, i);
    // Some environments (e.g., Java) produce illegal file URLs without an
    // authority part; treat them as having an empty authority part:
    if (!externalUriReference.match("//", i))
    {
        buf.append("//");
    }
    rtl_TextEncoding encoding = osl_getThreadTextEncoding();
    for (bool path = true;;) {
        sal_Int32 j = i;
        while (j != externalUriReference.getLength()
               && externalUriReference[j] != '#'
               && (!path || externalUriReference[j] != '/'))
        {
            ++j;
        }
        if (j != i) {
            OUString seg(
                rtl::Uri::encode(
                    rtl::Uri::decode(
                        externalUriReference.copy(i, j - i),
                        rtl_UriDecodeStrict, encoding),
                    rtl_UriCharClassPchar, rtl_UriEncodeStrict,
                    RTL_TEXTENCODING_UTF8));
            if (seg.isEmpty()) {
                return OUString();
            }
            buf.append(seg);
        }
        if (j == externalUriReference.getLength()) {
            break;
        }
        buf.append(externalUriReference[j]);
        path = externalUriReference[j] == '/';
        i = j + 1;
    }
    return buf.makeStringAndClear();
}

OUString Translator::translateToExternal(
    OUString const & internalUriReference)
{
    if (!internalUriReference.matchIgnoreAsciiCase("file://"))
    {
        return internalUriReference;
    }
    sal_Int32 i = RTL_CONSTASCII_LENGTH("file://");
    OUStringBuffer buf;
    buf.appendCopy(internalUriReference, 0, i);
    rtl_TextEncoding encoding = osl_getThreadTextEncoding();
    for (bool path = true;;) {
        sal_Int32 j = i;
        while (j != internalUriReference.getLength()
               && internalUriReference[j] != '#'
               && (!path || internalUriReference[j] != '/'))
        {
            ++j;
        }
        if (j != i) {
            // Use rtl_UriDecodeToIuri -> rtl_UriEncodeStrictKeepEscapes instead
            // of rtl_UriDecodeStrict -> rtl_UriEncodeStrict, so that spurious
            // non--UTF-8 octets like "%FE" are copied verbatim:
            OUString seg(
                rtl::Uri::encode(
                    rtl::Uri::decode(
                        internalUriReference.copy(i, j - i),
                        rtl_UriDecodeToIuri, RTL_TEXTENCODING_UTF8),
                    rtl_UriCharClassPchar, rtl_UriEncodeStrictKeepEscapes,
                    encoding));
            if (seg.isEmpty()) {
                return OUString();
            }
            buf.append(seg);
        }
        if (j == internalUriReference.getLength()) {
            break;
        }
        buf.append(internalUriReference[j]);
        path = internalUriReference[j] == '/';
        i = j + 1;
    }
    return buf.makeStringAndClear();
}

}

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
com_sun_star_comp_uri_ExternalUriReferenceTranslator_get_implementation(css::uno::XComponentContext* ,
        css::uno::Sequence<css::uno::Any> const &)
{
    return ::cppu::acquire(new Translator);
}

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