LibreOffice Module ucb (master) 1
ucpext_provider.cxx
Go to the documentation of this file.
1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#include "ucpext_provider.hxx"
21#include "ucpext_content.hxx"
22
23#include <com/sun/star/ucb/IllegalIdentifierException.hpp>
24#include <cppuhelper/weak.hxx>
26#include <osl/mutex.hxx>
27#include <rtl/ustrbuf.hxx>
28
29
30namespace ucb::ucp::ext
31{
32
33
34 using ::com::sun::star::uno::Reference;
35 using ::com::sun::star::uno::XInterface;
36 using ::com::sun::star::uno::Sequence;
37 using ::com::sun::star::ucb::XContentIdentifier;
38 using ::com::sun::star::ucb::IllegalIdentifierException;
39 using ::com::sun::star::ucb::XContent;
40 using ::com::sun::star::uno::XComponentContext;
41
42
43 //= ContentProvider
44
45
46 ContentProvider::ContentProvider( const Reference< XComponentContext >& rxContext )
47 :ContentProvider_Base( rxContext )
48 {
49 }
50
51
52 ContentProvider::~ContentProvider()
53 {
54 }
55
56
57 OUString SAL_CALL ContentProvider::getImplementationName()
58 {
59 return "org.openoffice.comp.ucp.ext.ContentProvider";
60 }
61
62
63 Sequence< OUString > SAL_CALL ContentProvider::getSupportedServiceNames( )
64 {
65 return { "com.sun.star.ucb.ContentProvider", "com.sun.star.ucb.ExtensionContentProvider" };
66 }
67
68
69 OUString ContentProvider::getRootURL()
70 {
71 return "vnd.sun.star.extension://";
72 }
73
74
75 OUString ContentProvider::getArtificialNodeContentType()
76 {
77 return "application/vnd.sun.star.extension-content";
78 }
79
80
81 namespace
82 {
83 void lcl_ensureAndTransfer( std::u16string_view& io_rIdentifierFragment, OUStringBuffer& o_rNormalization, const sal_Unicode i_nLeadingChar )
84 {
85 if ( ( io_rIdentifierFragment.empty() ) || ( io_rIdentifierFragment[0] != i_nLeadingChar ) )
86 throw IllegalIdentifierException();
87 io_rIdentifierFragment = io_rIdentifierFragment.substr( 1 );
88 o_rNormalization.append( i_nLeadingChar );
89 }
90 }
91
92
93 Reference< XContent > SAL_CALL ContentProvider::queryContent( const Reference< XContentIdentifier >& i_rIdentifier )
94 {
95 // Check URL scheme...
96 static const OUStringLiteral sScheme( u"vnd.sun.star.extension" );
97 if ( !i_rIdentifier->getContentProviderScheme().equalsIgnoreAsciiCase( sScheme ) )
98 throw IllegalIdentifierException();
99
100 // normalize the identifier
101 const OUString sIdentifier( i_rIdentifier->getContentIdentifier() );
102
103 // the scheme needs to be lower-case
104 OUStringBuffer aComposer;
105 aComposer.append( sIdentifier.copy( 0, sScheme.getLength() ).toAsciiLowerCase() );
106
107 // one : is required after the scheme
108 std::u16string_view sRemaining( sIdentifier.subView( sScheme.getLength() ) );
109 lcl_ensureAndTransfer( sRemaining, aComposer, ':' );
110
111 // and at least one /
112 lcl_ensureAndTransfer( sRemaining, aComposer, '/' );
113
114 // the normalized form requires one additional /, but we also accept identifiers which don't have it
115 if ( sRemaining.empty() )
116 {
117 // the root content is a special case, it requires /
118 aComposer.append( "//" );
119 }
120 else
121 {
122 if ( sRemaining[0] != '/' )
123 {
124 aComposer.append( '/' );
125 aComposer.append( sRemaining );
126 }
127 else
128 {
129 lcl_ensureAndTransfer( sRemaining, aComposer, '/' );
130 // by now, we moved "vnd.sun.star.extension://" from the URL to aComposer
131 if ( sRemaining.empty() )
132 {
133 // again, it's the root content, but one / is missing
134 aComposer.append( '/' );
135 }
136 else
137 {
138 aComposer.append( sRemaining );
139 }
140 }
141 }
142 const Reference< XContentIdentifier > xNormalizedIdentifier( new ::ucbhelper::ContentIdentifier( aComposer.makeStringAndClear() ) );
143
144 ::osl::MutexGuard aGuard( m_aMutex );
145
146 // check if a content with given id already exists...
147 Reference< XContent > xContent( queryExistingContent( xNormalizedIdentifier ) );
148 if ( xContent.is() )
149 return xContent;
150
151 // create a new content
152 xContent = new Content( m_xContext, this, xNormalizedIdentifier );
153 if ( !xContent->getIdentifier().is() )
154 throw IllegalIdentifierException();
155
156 registerNewContent( xContent );
157 return xContent;
158 }
159
160
161} // namespace ucb::ucp::ext
162
163
164extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
166 css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
167{
168 return cppu::acquire(new ucb::ucp::ext::ContentProvider(context));
169}
170
171/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
ContentProvider(const css::uno::Reference< css::uno::XComponentContext > &rxContext)
std::mutex m_aMutex
::ucbhelper::ContentProviderImplHelper ContentProvider_Base
sal_uInt16 sal_Unicode
SAL_DLLPUBLIC_EXPORT css::uno::XInterface * ucb_ext_ContentProvider_get_implementation(css::uno::XComponentContext *context, css::uno::Sequence< css::uno::Any > const &)