connectivity/source/commontools/dbcharset.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
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   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 <connectivity/dbcharset.hxx>
  21 #include "diagnose_ex.h"
  22 #include <osl/diagnose.h>
  23 #include <rtl/tencinfo.h>
  24
  25
  26 namespace dbtools
  27 {
  28
  29
  30
  31     //= OCharsetMap
  32
  33
  34     OCharsetMap::OCharsetMap()
  35     {
  36     }
  37
  38
  39     void OCharsetMap::lateConstruct()
  40     {
  41         const rtl_TextEncoding eFirstEncoding = RTL_TEXTENCODING_DONTKNOW;
  42         const rtl_TextEncoding eLastEncoding = 100;     // TODO: a define in rtl/textenc.h would be fine here ...
  43         OSL_ENSURE( 0 == eFirstEncoding, "OCharsetMap::OCharsetMap: somebody changed the numbers!" );
  44
  45         rtl_TextEncodingInfo aInfo; aInfo.StructSize = sizeof( rtl_TextEncodingInfo );
  46         for ( rtl_TextEncoding eEncoding = eFirstEncoding; eEncoding < eLastEncoding; ++eEncoding )
  47         {
  48             if  (   ( RTL_TEXTENCODING_DONTKNOW == eEncoding )  // this is always allowed - it has the special meaning "system encoding"
  49                 ||  (   rtl_getTextEncodingInfo( eEncoding, &aInfo )
  50                     &&  approveEncoding( eEncoding, aInfo )
  51                     )
  52                 )
  53             {
  54                 m_aEncodings.insert( eEncoding );
  55             }
  56         }
  57
  58         OSL_ENSURE( find( RTL_TEXTENCODING_MS_1252 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding ANSI!" );
  59         OSL_ENSURE( find( RTL_TEXTENCODING_APPLE_ROMAN ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding macintosh!" );
  60         OSL_ENSURE( find( RTL_TEXTENCODING_IBM_437 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding IBM437!" );
  61         OSL_ENSURE( find( RTL_TEXTENCODING_IBM_850) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding IBM850!" );
  62         OSL_ENSURE( find( RTL_TEXTENCODING_IBM_860 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding IBM860!" );
  63         OSL_ENSURE( find( RTL_TEXTENCODING_IBM_861 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding IBM861!" );
  64         OSL_ENSURE( find( RTL_TEXTENCODING_IBM_863 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding IBM863!" );
  65         OSL_ENSURE( find( RTL_TEXTENCODING_IBM_865 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding IBM865!" );
  66         OSL_ENSURE( find( RTL_TEXTENCODING_IBM_866 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding IBM866!" );
  67         OSL_ENSURE( find( RTL_TEXTENCODING_DONTKNOW ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding SYSTEM!" );
  68         OSL_ENSURE( find( RTL_TEXTENCODING_UTF8 ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding UTF-8!" );
  69         OSL_ENSURE( find( RTL_TEXTENCODING_BIG5_HKSCS ) != end(), "OCharsetMap::lateConstruct: missing compatibility encoding Big5-HKSCS!" );
  70     }
  71
  72
  73     bool OCharsetMap::approveEncoding( const rtl_TextEncoding _eEncoding, const rtl_TextEncodingInfo& _rInfo ) const
  74     {
  75         bool bIsMimeEncoding = 0 != ( _rInfo.Flags & RTL_TEXTENCODING_INFO_MIME );
  76         OSL_ENSURE( !bIsMimeEncoding || rtl_getMimeCharsetFromTextEncoding( _eEncoding ),
  77                 "OCharsetMap::OCharsetMap: inconsistence in rtl!" );
  78         OSL_UNUSED( _eEncoding );
  79         return bIsMimeEncoding;
  80     }
  81
  82
  83     OCharsetMap::~OCharsetMap()
  84     {
  85     }
  86
  87
  88     OCharsetMap::CharsetIterator OCharsetMap::begin() const
  89     {
  90         ensureConstructed( );
  91         return CharsetIterator(this, m_aEncodings.begin() );
  92     }
  93
  94
  95     OCharsetMap::CharsetIterator    OCharsetMap::find(const rtl_TextEncoding _eEncoding) const
  96     {
  97         ensureConstructed( );
  98         return CharsetIterator( this, m_aEncodings.find( _eEncoding ) );
  99     }
 100
 101
 102     OCharsetMap::CharsetIterator    OCharsetMap::find(const OUString& _rIanaName, const IANA&) const
 103     {
 104         ensureConstructed( );
 105
 106         rtl_TextEncoding eEncoding = RTL_TEXTENCODING_DONTKNOW;
 107         if ( !_rIanaName.isEmpty() )
 108         {
 109             // byte string conversion
 110             OString sMimeByteString( _rIanaName.getStr(), _rIanaName.getLength(), RTL_TEXTENCODING_ASCII_US );
 111             // look up
 112             eEncoding = rtl_getTextEncodingFromMimeCharset( sMimeByteString.getStr() );
 113
 114             if ( RTL_TEXTENCODING_DONTKNOW == eEncoding )
 115             {   // if we're here, the name is not empty, but unknown -> this is an invalid name
 116                 return end();
 117             }
 118         }
 119
 120         return find( eEncoding );
 121     }
 122
 123
 124     OCharsetMap::CharsetIterator OCharsetMap::end() const
 125     {
 126         ensureConstructed( );
 127
 128         return CharsetIterator( this, m_aEncodings.end() );
 129     }
 130
 131
 132     //= CharsetIteratorDerefHelper
 133
 134
 135     CharsetIteratorDerefHelper::CharsetIteratorDerefHelper( const CharsetIteratorDerefHelper& _rSource )
 136         :m_eEncoding( _rSource.m_eEncoding )
 137         ,m_aIanaName( _rSource.m_aIanaName )
 138     {
 139     }
 140
 141
 142     CharsetIteratorDerefHelper:: CharsetIteratorDerefHelper(const rtl_TextEncoding _eEncoding, const OUString& _rIanaName )
 143         :m_eEncoding( _eEncoding )
 144         ,m_aIanaName( _rIanaName )
 145     {
 146     }
 147
 148
 149     //= OCharsetMap::CharsetIterator
 150
 151
 152     OCharsetMap::CharsetIterator::CharsetIterator(const OCharsetMap* _pContainer, OCharsetMap::TextEncBag::const_iterator _aPos )
 153         :m_pContainer( _pContainer )
 154         ,m_aPos( _aPos )
 155     {
 156         OSL_ENSURE( m_pContainer, "OCharsetMap::CharsetIterator::CharsetIterator : invalid container!" );
 157     }
 158
 159
 160     OCharsetMap::CharsetIterator::CharsetIterator(const CharsetIterator& _rSource)
 161         :m_pContainer( _rSource.m_pContainer )
 162         ,m_aPos( _rSource.m_aPos )
 163     {
 164     }
 165
 166
 167     OCharsetMap::CharsetIterator::~CharsetIterator()
 168     {
 169     }
 170
 171
 172     CharsetIteratorDerefHelper OCharsetMap::CharsetIterator::operator*() const
 173     {
 174         OSL_ENSURE( m_aPos != m_pContainer->m_aEncodings.end(), "OCharsetMap::CharsetIterator::operator*: invalid position!");
 175
 176         rtl_TextEncoding eEncoding = *m_aPos;
 177         OUString sIanaName;
 178
 179         if ( RTL_TEXTENCODING_DONTKNOW != eEncoding )
 180         {   // it's not the virtual "system charset"
 181             const char* pIanaName = rtl_getMimeCharsetFromTextEncoding( eEncoding );
 182             OSL_ENSURE( pIanaName, "OCharsetMap::CharsetIterator: invalid mime name!" );
 183             if ( pIanaName )
 184                 sIanaName = OUString::createFromAscii( pIanaName );
 185         }
 186         return CharsetIteratorDerefHelper( eEncoding, sIanaName );
 187     }
 188
 189
 190     const OCharsetMap::CharsetIterator& OCharsetMap::CharsetIterator::operator++()
 191     {
 192         OSL_ENSURE( m_aPos != m_pContainer->m_aEncodings.end(), "OCharsetMap::CharsetIterator::operator++ : invalid position!" );
 193         if ( m_aPos != m_pContainer->m_aEncodings.end())
 194             ++m_aPos;
 195         return *this;
 196     }
 197
 198
 199     const OCharsetMap::CharsetIterator& OCharsetMap::CharsetIterator::operator--()
 200     {
 201         OSL_ENSURE( m_aPos != m_pContainer->m_aEncodings.begin(), "OCharsetMap::CharsetIterator::operator-- : invalid position!" );
 202         if ( m_aPos != m_pContainer->m_aEncodings.begin() )
 203             --m_aPos;
 204         return *this;
 205     }
 206
 207
 208     bool operator==(const OCharsetMap::CharsetIterator& lhs, const OCharsetMap::CharsetIterator& rhs)
 209     {
 210         return ( lhs.m_pContainer == rhs.m_pContainer ) && ( lhs.m_aPos == rhs.m_aPos );
 211     }
 212
 213
 214 }   // namespace dbtools
 215
 216
 217 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */