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/////////////////////////////////////////////////////////////////////////////
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// Purpose: wxEncodingConverter class for converting between different
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// Author: Vaclav Slavik
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// Copyright: (c) 1999 Vaclav Slavik
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma implementation "encconv.h"
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#include "wx/encconv.h"
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// conversion tables, generated by scripts in $(WXWIN)/misc/unictabl:
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#if defined( __BORLANDC__ ) || defined(__DARWIN__)
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#include "../common/unictabl.inc"
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#include "unictabl.inc"
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typedef wchar_t tchar;
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#include <Carbon/Carbon.h>
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#include <ATSUnicode.h>
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#include <TextCommon.h>
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#include <TextEncodingConverter.h>
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#include "wx/fontutil.h"
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#include "wx/mac/private.h" // includes mac headers
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wxUint16 gMacEncodings[wxFONTENCODING_MACMAX-wxFONTENCODING_MACMIN+1][128] ;
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bool gMacEncodingsInited[wxFONTENCODING_MACMAX-wxFONTENCODING_MACMIN+1] ;
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#include "wx/msw/wince/missing.h" // for bsearch()
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static wxUint16* GetEncTable(wxFontEncoding enc)
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if( enc >= wxFONTENCODING_MACMIN && enc <= wxFONTENCODING_MACMAX )
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int i = enc-wxFONTENCODING_MACMIN ;
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if ( gMacEncodingsInited[i] == false )
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TECObjectRef converter ;
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TextEncodingBase code = wxMacGetSystemEncFromFontEnc( enc ) ;
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TextEncodingBase unicode = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ;
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OSStatus status = TECCreateConverter(&converter,code,unicode);
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ByteCount byteInLen, byteOutLen ;
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for( unsigned char c = 255 ; c >= 128 ; --c )
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status = TECConvertText(converter, (ConstTextPtr) &s , 1, &byteInLen,
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(TextPtr) &gMacEncodings[i][c-128] , 2, &byteOutLen);
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status = TECDisposeConverter(converter);
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gMacEncodingsInited[i]=true;
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return gMacEncodings[i] ;
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for (int i = 0; encodings_list[i].table != NULL; i++)
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if (encodings_list[i].encoding == enc)
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return encodings_list[i].table;
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extern "C" int wxCMPFUNC_CONV
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CompareCharsetItems(const void *i1, const void *i2)
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return ( ((CharsetItem*)i1) -> u - ((CharsetItem*)i2) -> u );
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static CharsetItem* BuildReverseTable(wxUint16 *tbl)
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CharsetItem *rev = new CharsetItem[128];
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for (int i = 0; i < 128; i++)
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rev[i].c = wxUint8(128 + i), rev[i].u = tbl[i];
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qsort(rev, 128, sizeof(CharsetItem), CompareCharsetItems);
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wxEncodingConverter::wxEncodingConverter()
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m_UnicodeInput = m_UnicodeOutput = false;
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bool wxEncodingConverter::Init(wxFontEncoding input_enc, wxFontEncoding output_enc, int method)
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wxUint16 *in_tbl, *out_tbl = NULL;
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if (m_Table) {delete[] m_Table; m_Table = NULL;}
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if (input_enc == wxFONTENCODING_UNICODE || output_enc == wxFONTENCODING_UNICODE) return false;
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if (input_enc == output_enc) {m_JustCopy = true; return true;}
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m_UnicodeOutput = (output_enc == wxFONTENCODING_UNICODE);
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if (input_enc == wxFONTENCODING_UNICODE)
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if ((out_tbl = GetEncTable(output_enc)) == NULL) return false;
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m_Table = new tchar[65536];
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for (i = 0; i < 128; i++) m_Table[i] = (tchar)i; // 7bit ASCII
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for (i = 128; i < 65536; i++) m_Table[i] = (tchar)0;
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if (method == wxCONVERT_SUBSTITUTE)
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for (i = 0; i < encoding_unicode_fallback_count; i++)
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m_Table[encoding_unicode_fallback[i].c] = (tchar) encoding_unicode_fallback[i].s;
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for (i = 0; i < 128; i++)
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m_Table[out_tbl[i]] = (tchar)(128 + i);
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m_UnicodeInput = true;
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else // input !Unicode
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if ((in_tbl = GetEncTable(input_enc)) == NULL) return false;
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if (output_enc != wxFONTENCODING_UNICODE)
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if ((out_tbl = GetEncTable(output_enc)) == NULL) return false;
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m_UnicodeInput = false;
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m_Table = new tchar[256];
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for (i = 0; i < 128; i++) m_Table[i] = (tchar)i; // 7bit ASCII
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if (output_enc == wxFONTENCODING_UNICODE)
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for (i = 0; i < 128; i++) m_Table[128 + i] = (tchar)in_tbl[i];
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else // output !Unicode
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CharsetItem *rev = BuildReverseTable(out_tbl);
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for (i = 0; i < 128; i++)
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item = (CharsetItem*) bsearch(&key, rev, 128, sizeof(CharsetItem), CompareCharsetItems);
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if (item == NULL && method == wxCONVERT_SUBSTITUTE)
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item = (CharsetItem*) bsearch(&key, encoding_unicode_fallback,
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encoding_unicode_fallback_count, sizeof(CharsetItem), CompareCharsetItems);
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m_Table[128 + i] = (tchar)item -> c;
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m_Table[128 + i] = (wchar_t)(128 + i);
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m_Table[128 + i] = (char)(128 + i);
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#define REPLACEMENT_CHAR ((tchar)'?')
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inline tchar GetTableValue(const tchar *table, tchar value, bool& repl)
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tchar r = table[value];
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if (r == 0 && value != 0)
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r = REPLACEMENT_CHAR;
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bool wxEncodingConverter::Convert(const char* input, char* output) const
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wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
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wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));
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strcpy(output, input);
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wxCHECK_MSG(m_Table != NULL, false,
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wxT("You must call wxEncodingConverter::Init() before actually converting!"));
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bool replaced = false;
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for (i = input, o = output; *i != 0;)
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*(o++) = (char)(GetTableValue(m_Table, (wxUint8)*(i++), replaced));
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bool wxEncodingConverter::Convert(const char* input, wchar_t* output) const
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wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
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wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));
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for (i = input, o = output; *i != 0;)
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*(o++) = (wchar_t)(*(i++));
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wxCHECK_MSG(m_Table != NULL, false,
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wxT("You must call wxEncodingConverter::Init() before actually converting!"));
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bool replaced = false;
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for (i = input, o = output; *i != 0;)
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*(o++) = (wchar_t)(GetTableValue(m_Table, (wxUint8)*(i++), replaced));
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bool wxEncodingConverter::Convert(const wchar_t* input, char* output) const
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wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
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wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));
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for (i = input, o = output; *i != 0;)
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*(o++) = (char)(*(i++));
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wxCHECK_MSG(m_Table != NULL, false,
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wxT("You must call wxEncodingConverter::Init() before actually converting!"));
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bool replaced = false;
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for (i = input, o = output; *i != 0;)
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*(o++) = (char)(GetTableValue(m_Table, (wxUint16)*(i++), replaced));
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bool wxEncodingConverter::Convert(const wchar_t* input, wchar_t* output) const
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wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
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wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));
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// wcscpy() is not guaranteed to exist
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for (i = input, o = output; *i != 0;)
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wxCHECK_MSG(m_Table != NULL, false,
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wxT("You must call wxEncodingConverter::Init() before actually converting!"));
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bool replaced = false;
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for (i = input, o = output; *i != 0;)
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*(o++) = (wchar_t)(GetTableValue(m_Table, (wxUint8)*(i++), replaced));
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#endif // wxUSE_WCHAR_T
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wxString wxEncodingConverter::Convert(const wxString& input) const
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if (m_JustCopy) return input;
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wxCHECK_MSG(m_Table != NULL, s,
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wxT("You must call wxEncodingConverter::Init() before actually converting!"));
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for (i = input.c_str(); *i != 0; i++)
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s << (wxChar)(m_Table[(wxUint16)*i]);
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for (i = input.c_str(); *i != 0; i++)
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s << (wxChar)(m_Table[(wxUint8)*i]);
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// Following tables describe classes of encoding equivalence.
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#define STOP wxFONTENCODING_SYSTEM
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#define NUM_OF_PLATFORMS 4 /*must conform to enum wxPLATFORM_XXXX !!!*/
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#define ENC_PER_PLATFORM 5
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// max no. of encodings for one language used on one platform
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// Anybody thinks 5 is not enough? ;-)
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static wxFontEncoding
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EquivalentEncodings[][NUM_OF_PLATFORMS][ENC_PER_PLATFORM+1] = {
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// *** Please put more common encodings as first! ***
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/* unix */ {wxFONTENCODING_ISO8859_1, wxFONTENCODING_ISO8859_15, STOP},
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/* windows */ {wxFONTENCODING_CP1252, STOP},
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/* mac */ {wxFONTENCODING_MACROMAN, STOP}
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/* unix */ {wxFONTENCODING_ISO8859_2, STOP},
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/* windows */ {wxFONTENCODING_CP1250, STOP},
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/* mac */ {wxFONTENCODING_MACCENTRALEUR, STOP}
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/* unix */ {wxFONTENCODING_ISO8859_13, wxFONTENCODING_ISO8859_4, STOP},
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/* windows */ {wxFONTENCODING_CP1257, STOP},
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/* unix */ {wxFONTENCODING_ISO8859_8, STOP},
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/* windows */ {wxFONTENCODING_CP1255, STOP},
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/* mac */ {wxFONTENCODING_MACHEBREW, STOP}
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/* unix */ {wxFONTENCODING_ISO8859_7, STOP},
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/* windows */ {wxFONTENCODING_CP1253, STOP},
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/* mac */ {wxFONTENCODING_MACGREEK, STOP}
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/* unix */ {wxFONTENCODING_ISO8859_6, STOP},
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/* windows */ {wxFONTENCODING_CP1256, STOP},
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/* mac */ {wxFONTENCODING_MACARABIC, STOP}
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/* unix */ {wxFONTENCODING_ISO8859_9, STOP},
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/* windows */ {wxFONTENCODING_CP1254, STOP},
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/* mac */ {wxFONTENCODING_MACTURKISH, STOP}
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/* unix */ {wxFONTENCODING_KOI8, wxFONTENCODING_KOI8_U, wxFONTENCODING_ISO8859_5, STOP},
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/* windows */ {wxFONTENCODING_CP1251, STOP},
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/* mac */ {wxFONTENCODING_MACCYRILLIC, STOP}
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{{STOP},{STOP},{STOP},{STOP}} /* Terminator */
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/* no, _not_ Arnold! */
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static bool FindEncoding(const wxFontEncodingArray& arr, wxFontEncoding f)
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for (wxFontEncodingArray::const_iterator it = arr.begin(), en = arr.end();
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wxFontEncodingArray wxEncodingConverter::GetPlatformEquivalents(wxFontEncoding enc, int platform)
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if (platform == wxPLATFORM_CURRENT)
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#if defined(__WXMSW__)
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platform = wxPLATFORM_WINDOWS;
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#elif defined(__WXGTK__) || defined(__WXMOTIF__)
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platform = wxPLATFORM_UNIX;
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#elif defined(__WXOS2__)
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platform = wxPLATFORM_OS2;
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#elif defined(__WXMAC__)
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platform = wxPLATFORM_MAC;
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wxFontEncodingArray arr;
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while (EquivalentEncodings[clas][0][0] != STOP)
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for (i = 0; i < NUM_OF_PLATFORMS; i++)
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for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
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if (EquivalentEncodings[clas][i][e] == enc)
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for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
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if (*f == enc) arr.push_back(enc);
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for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
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if (!FindEncoding(arr, *f)) arr.push_back(*f);
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i = NUM_OF_PLATFORMS/*hack*/; break;
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wxFontEncodingArray wxEncodingConverter::GetAllEquivalents(wxFontEncoding enc)
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wxFontEncodingArray arr;
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arr = GetPlatformEquivalents(enc); // we want them to be first items in array
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while (EquivalentEncodings[clas][0][0] != STOP)
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for (i = 0; i < NUM_OF_PLATFORMS; i++)
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for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
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if (EquivalentEncodings[clas][i][e] == enc)
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for (j = 0; j < NUM_OF_PLATFORMS; j++)
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for (f = EquivalentEncodings[clas][j]; *f != STOP; f++)
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if (!FindEncoding(arr, *f)) arr.push_back(*f);
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i = NUM_OF_PLATFORMS/*hack*/; break;