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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 <comphelper/officeresourcebundle.hxx>
21 :
22 : #include <com/sun/star/resource/XResourceBundle.hpp>
23 : #include <com/sun/star/resource/XResourceBundleLoader.hpp>
24 : #include <osl/mutex.hxx>
25 : #include <osl/diagnose.h>
26 : #include <rtl/ustrbuf.hxx>
27 :
28 :
29 : namespace comphelper
30 : {
31 :
32 :
33 : using ::com::sun::star::uno::Reference;
34 : using com::sun::star::resource::XResourceBundle;
35 : using com::sun::star::resource::XResourceBundleLoader;
36 : using com::sun::star::resource::MissingResourceException;
37 : using ::com::sun::star::uno::XComponentContext;
38 : using ::com::sun::star::uno::UNO_QUERY;
39 : using ::com::sun::star::uno::Exception;
40 : using ::com::sun::star::uno::Any;
41 :
42 9 : class ResourceBundle_Impl
43 : {
44 : private:
45 : Reference< XComponentContext > m_xContext;
46 : OUString m_sBaseName;
47 : Reference< XResourceBundle > m_xBundle;
48 : bool m_bAttemptedCreate;
49 : mutable ::osl::Mutex m_aMutex;
50 :
51 : public:
52 9 : ResourceBundle_Impl( const Reference< XComponentContext >& _context, const OUString& _baseName )
53 : :m_xContext( _context )
54 : ,m_sBaseName( _baseName )
55 9 : ,m_bAttemptedCreate( false )
56 : {
57 9 : }
58 :
59 : public:
60 : /** loads the string with the given resource id from the resource bundle
61 : @param _resourceId
62 : the id of the string to load
63 : @return
64 : the requested resource string. If no string with the given id exists in the resource bundle,
65 : an empty string is returned. In a non-product version, an OSL_ENSURE will notify you of this
66 : then.
67 : */
68 : OUString loadString( sal_Int32 _resourceId ) const;
69 :
70 : /** determines whether the resource bundle has a string with the given id
71 : @param _resourceId
72 : the id of the string whose existence is to be checked
73 : @return
74 : <TRUE/> if and only if a string with the given ID exists in the resource
75 : bundle.
76 : */
77 : bool hasString( sal_Int32 _resourceId ) const;
78 :
79 : private:
80 : /** loads the bundle represented by the instance
81 :
82 : The method is safe against multiple calls: If a previous call succeeded or failed, the
83 : previous result will be returned, without any other processing.
84 :
85 : @precond
86 : Our mutex is locked.
87 : */
88 : bool impl_loadBundle_nothrow();
89 :
90 : /** returns the resource bundle key for a string with a given resource id
91 : */
92 : static OUString
93 : impl_getStringResourceKey( sal_Int32 _resourceId );
94 : };
95 :
96 :
97 23 : OUString ResourceBundle_Impl::impl_getStringResourceKey( sal_Int32 _resourceId )
98 : {
99 23 : OUStringBuffer key;
100 23 : key.appendAscii( "string:" );
101 23 : key.append( _resourceId );
102 23 : return key.makeStringAndClear();
103 : }
104 :
105 :
106 23 : OUString ResourceBundle_Impl::loadString( sal_Int32 _resourceId ) const
107 : {
108 23 : ::osl::MutexGuard aGuard( m_aMutex );
109 :
110 23 : OUString sString;
111 :
112 23 : if ( const_cast< ResourceBundle_Impl* >( this )->impl_loadBundle_nothrow() )
113 : {
114 : try
115 : {
116 23 : OSL_VERIFY( m_xBundle->getByName( impl_getStringResourceKey( _resourceId ) ) >>= sString );
117 : }
118 0 : catch( const Exception& )
119 : {
120 : OSL_FAIL( "ResourceBundle_Impl::loadString: caught an exception!" );
121 : }
122 : }
123 23 : return sString;
124 : }
125 :
126 :
127 0 : bool ResourceBundle_Impl::hasString( sal_Int32 _resourceId ) const
128 : {
129 0 : ::osl::MutexGuard aGuard( m_aMutex );
130 :
131 0 : bool has = false;
132 :
133 0 : if ( const_cast< ResourceBundle_Impl* >( this )->impl_loadBundle_nothrow() )
134 : {
135 : try
136 : {
137 0 : has = m_xBundle->hasByName( impl_getStringResourceKey( _resourceId ) );
138 : }
139 0 : catch( const Exception& )
140 : {
141 : OSL_FAIL( "ResourceBundle_Impl::hasString: caught an exception!" );
142 : }
143 : }
144 0 : return has;
145 : }
146 :
147 :
148 23 : bool ResourceBundle_Impl::impl_loadBundle_nothrow()
149 : {
150 23 : if ( m_bAttemptedCreate )
151 14 : return m_xBundle.is();
152 :
153 9 : m_bAttemptedCreate = true;
154 :
155 9 : Reference< XResourceBundleLoader > xLoader;
156 : try
157 : {
158 9 : Any aValue( m_xContext->getValueByName(
159 9 : OUString( "/singletons/com.sun.star.resource.OfficeResourceLoader" ) ) );
160 9 : OSL_VERIFY( aValue >>= xLoader );
161 : }
162 0 : catch( const Exception& )
163 : {
164 : OSL_FAIL( "ResourceBundle_Impl::impl_loadBundle_nopthrow: could not create the resource loader!" );
165 : }
166 :
167 9 : if ( !xLoader.is() )
168 0 : return false;
169 :
170 : try
171 : {
172 9 : m_xBundle = xLoader->loadBundle_Default( m_sBaseName );
173 : }
174 0 : catch( const MissingResourceException& )
175 : {
176 : OSL_FAIL( "ResourceBundle_Impl::impl_loadBundle_nopthrow: missing the given resource bundle!" );
177 : }
178 :
179 9 : return m_xBundle.is();
180 : }
181 :
182 :
183 9 : OfficeResourceBundle::OfficeResourceBundle( const Reference< XComponentContext >& _context, const sal_Char* _bundleBaseAsciiName )
184 9 : :m_pImpl( new ResourceBundle_Impl( _context, OUString::createFromAscii( _bundleBaseAsciiName ) ) )
185 : {
186 9 : }
187 :
188 :
189 9 : OfficeResourceBundle::~OfficeResourceBundle()
190 : {
191 9 : }
192 :
193 :
194 23 : OUString OfficeResourceBundle::loadString( sal_Int32 _resourceId ) const
195 : {
196 23 : return m_pImpl->loadString( _resourceId );
197 : }
198 :
199 :
200 0 : bool OfficeResourceBundle::hasString( sal_Int32 _resourceId ) const
201 : {
202 0 : return m_pImpl->hasString( _resourceId );
203 : }
204 :
205 :
206 : } // namespace comphelper
207 :
208 :
209 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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