xref: /aoo41x/main/svtools/source/misc/langtab.cxx (revision 5900e8ec)
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21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_svtools.hxx"
26 
27 // include ---------------------------------------------------------------
28 
29 #include <tools/shl.hxx>
30 #include <tools/debug.hxx>
31 
32 //#include <com/sun/star/i18n/XCharacterClassification.hpp>
33 #include <com/sun/star/i18n/DirectionProperty.hpp>
34 
35 #include <i18npool/lang.h>
36 #include <i18npool/mslangid.hxx>
37 
38 #include <svtools/svtools.hrc>
39 #include <svtools/svtdata.hxx>
40 #include <svtools/langtab.hxx>
41 #include <unotools/syslocale.hxx>
42 
43 
44 using namespace ::com::sun::star;
45 
46 //------------------------------------------------------------------------
47 
48 SVT_DLLPUBLIC const String ApplyLreOrRleEmbedding( const String &rText )
49 {
50     const sal_uInt16 nLen = rText.Len();
51     if (nLen == 0)
52         return String();
53 
54     const sal_Unicode cLRE_Embedding  = 0x202A;      // the start char of an LRE embedding
55     const sal_Unicode cRLE_Embedding  = 0x202B;      // the start char of an RLE embedding
56     const sal_Unicode cPopDirectionalFormat = 0x202C;   // the unicode PDF (POP_DIRECTIONAL_FORMAT) char that terminates an LRE/RLE embedding
57 
58     // check if there are alreay embedding characters at the strings start
59     // if so change nothing
60     const sal_Unicode cChar = rText.GetBuffer()[0];
61     if (cChar == cLRE_Embedding || cChar == cRLE_Embedding)
62         return rText;
63 
64     // since we only call the function getCharacterDirection
65     // it does not matter which locale the CharClass is for.
66     // Thus we can readily make use of SvtSysLocale::GetCharClass()
67     // which should come at no cost...
68     SvtSysLocale aSysLocale;
69     const CharClass &rCharClass = aSysLocale.GetCharClass();
70 
71     // we should look for the first non-neutral LTR or RTL character
72     // and use that to determine the embedding of the whole text...
73     // Thus we can avoid to check every character of the text.
74     bool bFound     = false;
75     bool bIsRtlText = false;
76     for (sal_uInt16 i = 0;  i < nLen && !bFound;  ++i)
77     {
78         sal_Int16 nDirection = rCharClass.getCharacterDirection( rText, i );
79         switch (nDirection)
80         {
81             case i18n::DirectionProperty_LEFT_TO_RIGHT :
82             case i18n::DirectionProperty_LEFT_TO_RIGHT_EMBEDDING :
83             case i18n::DirectionProperty_LEFT_TO_RIGHT_OVERRIDE :
84             case i18n::DirectionProperty_EUROPEAN_NUMBER :
85             case i18n::DirectionProperty_ARABIC_NUMBER :        // yes! arabic numbers are written from left to right
86             {
87                 bIsRtlText  = false;
88                 bFound      = true;
89                 break;
90             }
91 
92             case i18n::DirectionProperty_RIGHT_TO_LEFT :
93             case i18n::DirectionProperty_RIGHT_TO_LEFT_ARABIC :
94             case i18n::DirectionProperty_RIGHT_TO_LEFT_EMBEDDING :
95             case i18n::DirectionProperty_RIGHT_TO_LEFT_OVERRIDE :
96             {
97                 bIsRtlText  = true;
98                 bFound      = true;
99                 break;
100             }
101 
102             default:
103             {
104                 // nothing to be done, character is considered to be neutral we need to look further ...
105             }
106         }
107     }
108 
109     sal_Unicode cStart  = cLRE_Embedding;   // default is to use LRE embedding characters
110     if (bIsRtlText)
111         cStart = cRLE_Embedding;            // then use RLE embedding
112 
113     // add embedding start and end chars to the text if the direction could be determined
114     String aRes( rText );
115     if (bFound)
116     {
117         aRes.Insert( cStart, 0 );
118         aRes.Insert( cPopDirectionalFormat );
119     }
120 
121     return aRes;
122 }
123 
124 //------------------------------------------------------------------------
125 
126 SvtLanguageTable::SvtLanguageTable() :
127     ResStringArray( SvtResId( STR_ARR_SVT_LANGUAGE_TABLE ) )
128 {
129 }
130 
131 //------------------------------------------------------------------------
132 
133 SvtLanguageTable::~SvtLanguageTable()
134 {
135 }
136 
137 //------------------------------------------------------------------------
138 
139 const String& SvtLanguageTable::GetString( const LanguageType eType ) const
140 {
141     LanguageType eLang = MsLangId::getReplacementForObsoleteLanguage( eType);
142     sal_uInt32 nPos = FindIndex( eLang );
143 
144 	if ( RESARRAY_INDEX_NOTFOUND != nPos && nPos < Count() )
145 		return ResStringArray::GetString( nPos );
146 	else
147 	{
148         // If we knew what a simple "en" should alias to (en_US?) we could
149         // generally raise an error.
150         OSL_ENSURE(
151             eLang == LANGUAGE_ENGLISH, "language entry not found in resource" );
152 
153         nPos = FindIndex( LANGUAGE_DONTKNOW );
154 
155 		if ( RESARRAY_INDEX_NOTFOUND != nPos && nPos < Count() )
156 			return ResStringArray::GetString( nPos );
157 	}
158     static String aEmptyStr;
159     return aEmptyStr;
160 }
161 
162 String SvtLanguageTable::GetLanguageString( const LanguageType eType )
163 {
164     static const SvtLanguageTable aLangTable;
165 	return aLangTable.GetString( eType );
166 }
167 
168 //------------------------------------------------------------------------
169 
170 LanguageType SvtLanguageTable::GetType( const String& rStr ) const
171 {
172 	LanguageType eType = LANGUAGE_DONTKNOW;
173 	sal_uInt32 nCount = Count();
174 
175 	for ( sal_uInt32 i = 0; i < nCount; ++i )
176     {
177 		if ( rStr == ResStringArray::GetString( i ) )
178 		{
179 			eType = LanguageType( GetValue( i ) );
180 			break;
181 		}
182     }
183 	return eType;
184 }
185 
186 //------------------------------------------------------------------------
187 
188 sal_uInt32 SvtLanguageTable::GetEntryCount() const
189 {
190 	return Count();
191 }
192 
193 //------------------------------------------------------------------------
194 
195 LanguageType SvtLanguageTable::GetTypeAtIndex( sal_uInt32 nIndex ) const
196 {
197 	LanguageType nType = LANGUAGE_DONTKNOW;
198 	if (nIndex < Count())
199 		nType = LanguageType( GetValue( nIndex ) );
200 	return nType;
201 }
202 
203 //------------------------------------------------------------------------
204 
205