src/common/encconv.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        encconv.cpp
// Purpose:     wxEncodingConverter class for converting between different
//              font encodings
// Author:      Vaclav Slavik
// Copyright:   (c) 1999 Vaclav Slavik
// Licence:     wxWindows Licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "encconv.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
  #pragma hdrstop
#endif

#include "wx/encconv.h"

#include <stdlib.h>

// conversion tables, generated by scripts in $(WXWIN)/misc/unictabl:
#ifdef __BORLANDC__
#include "../common/unictabl.inc"
#else
#include "unictabl.inc"
#endif

#if wxUSE_WCHAR_T
typedef wchar_t tchar;
#else
typedef char tchar;
#endif

static wxUint16* LINKAGEMODE GetEncTable(wxFontEncoding enc)
{
    for (int i = 0; encodings_list[i].table != NULL; i++)
    {
        if (encodings_list[i].encoding == enc)
            return encodings_list[i].table;
    }
    return NULL;
}

typedef struct {
    wxUint16 u;
    wxUint8  c;
} CharsetItem;


static int LINKAGEMODE CompareCharsetItems(const void *i1, const void *i2)
{
    return ( ((CharsetItem*)i1) -> u - ((CharsetItem*)i2) -> u );
}


static CharsetItem* LINKAGEMODE BuildReverseTable(wxUint16 *tbl)
{
    CharsetItem *rev = new CharsetItem[128];

    for (int i = 0; i < 128; i++)
        rev[i].c = 128 + i, rev[i].u = tbl[i];

    qsort(rev, 128, sizeof(CharsetItem), CompareCharsetItems);

    return rev;
}


wxEncodingConverter::wxEncodingConverter()
{
    m_Table = NULL;
    m_UnicodeInput = m_UnicodeOutput = FALSE;
    m_JustCopy = FALSE;
}


bool wxEncodingConverter::Init(wxFontEncoding input_enc, wxFontEncoding output_enc, int method)
{
    unsigned i;
    wxUint16 *in_tbl = NULL, *out_tbl = NULL;

    if (m_Table) {delete[] m_Table; m_Table = NULL;}

#if !wxUSE_WCHAR_T
    if (input_enc == wxFONTENCODING_UNICODE || output_enc == wxFONTENCODING_UNICODE) return FALSE;
#endif

    if (input_enc == output_enc) {m_JustCopy = TRUE; return TRUE;}

    m_UnicodeOutput = (output_enc == wxFONTENCODING_UNICODE);
    m_JustCopy = FALSE;

    if (input_enc == wxFONTENCODING_UNICODE)
    {
        if ((out_tbl = GetEncTable(output_enc)) == NULL) return FALSE;

        m_Table = new tchar[65536];
        for (i = 0; i < 128; i++)  m_Table[i] = (tchar)i; // 7bit ASCII
        for (i = 128; i < 65536; i++)  m_Table[i] = (tchar)'?';
                // FIXME - this should be character that means `unicode to charset' impossible, not '?'

        if (method == wxCONVERT_SUBSTITUTE)
        {
            for (i = 0; i < encoding_unicode_fallback_count; i++)
                m_Table[encoding_unicode_fallback[i].c] = (tchar) encoding_unicode_fallback[i].s;
        }

        for (i = 0; i < 128; i++)
            m_Table[out_tbl[i]] = (tchar)(128 + i);

        m_UnicodeInput = TRUE;
        return TRUE;
    }

    else
    {
        if ((in_tbl = GetEncTable(input_enc)) == NULL) return FALSE;
        if (output_enc != wxFONTENCODING_UNICODE)
            if ((out_tbl = GetEncTable(output_enc)) == NULL) return FALSE;

        m_UnicodeInput = FALSE;

        m_Table = new tchar[256];
        for (i = 0; i < 128; i++)  m_Table[i] = (tchar)i; // 7bit ASCII

        if (output_enc == wxFONTENCODING_UNICODE)
        {
            for (i = 0; i < 128; i++)  m_Table[128 + i] = (tchar)in_tbl[i];
            return TRUE;
        }
        else
        {
            CharsetItem *rev = BuildReverseTable(out_tbl);
            CharsetItem *item, key;

            for (i = 0; i < 128; i++)
            {
                key.u = in_tbl[i];
                item = (CharsetItem*) bsearch(&key, rev, 128, sizeof(CharsetItem), CompareCharsetItems);
                if (item == NULL && method == wxCONVERT_SUBSTITUTE)
                    item = (CharsetItem*) bsearch(&key, encoding_unicode_fallback,
                                encoding_unicode_fallback_count, sizeof(CharsetItem), CompareCharsetItems);
                if (item)
                    m_Table[128 + i] = (tchar)item -> c;
                else
                    m_Table[128 + i] = 128 + i; // don't know => don't touch
            }

            delete[] rev;
            return TRUE;
        }
    }
}


void wxEncodingConverter::Convert(const char* input, char* output)
{
    wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
    wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));

    const char *i;
    char *o;

    if (m_JustCopy)
    {
        strcpy(output, input);
        return;
    }

    wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));

    for (i = input, o = output; *i != 0;)
        *(o++) = (char)(m_Table[(wxUint8)*(i++)]);
    *o = 0;
}


#if wxUSE_WCHAR_T

void wxEncodingConverter::Convert(const char* input, wchar_t* output)
{
    wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
    wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));

    const char *i;
    wchar_t *o;

    if (m_JustCopy)
    {
        for (i = input, o = output; *i != 0;)
            *(o++) = (wchar_t)(*(i++));
        *o = 0;
        return;
    }

    wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));

    for (i = input, o = output; *i != 0;)
        *(o++) = (wchar_t)(m_Table[(wxUint8)*(i++)]);
    *o = 0;
}


void wxEncodingConverter::Convert(const wchar_t* input, char* output)
{
    wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
    wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));

    const wchar_t *i;
    char *o;

    if (m_JustCopy)
    {
        for (i = input, o = output; *i != 0;)
            *(o++) = (char)(*(i++));
        *o = 0;
        return;
    }

    wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));

    for (i = input, o = output; *i != 0;)
        *(o++) = (char)(m_Table[(wxUint16)*(i++)]);
    *o = 0;
}


void wxEncodingConverter::Convert(const wchar_t* input, wchar_t* output)
{
    wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
    wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));

    const wchar_t *i;
    wchar_t *o;

    if (m_JustCopy)
    {
        // wcscpy() is not guaranteed to exist
        for (i = input, o = output; *i != 0;)
            *(o++) = (*(i++));
        *o = 0;
        return;
    }

    wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));

    for (i = input, o = output; *i != 0;)
        *(o++) = (wchar_t)(m_Table[(wxUint8)*(i++)]);
    *o = 0;
}

#endif // wxUSE_WCHAR_T


wxString wxEncodingConverter::Convert(const wxString& input)
{
    if (m_JustCopy) return input;

    wxString s;
    const wxChar *i;

    wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));

    if (m_UnicodeInput)
        for (i = input.c_str(); *i != 0; i++)
            s << (wxChar)(m_Table[(wxUint16)*i]);
    else
        for (i = input.c_str(); *i != 0; i++)
            s << (wxChar)(m_Table[(wxUint8)*i]);
    return s;
}


// Following tables describe classes of encoding equivalence.
//

#define STOP wxFONTENCODING_SYSTEM

#define NUM_OF_PLATFORMS  4 /*must conform to enum wxPLATFORM_XXXX !!!*/
#define ENC_PER_PLATFORM  5
           // max no. of encodings for one language used on one platform
           // Anybody thinks 5 is not enough? ;-)

static wxFontEncoding
    EquivalentEncodings[][NUM_OF_PLATFORMS][ENC_PER_PLATFORM+1] = {

    // *** Please put more common encodings as first! ***

    // West European
    {
        /* unix    */ {wxFONTENCODING_ISO8859_1, wxFONTENCODING_ISO8859_15, STOP},
        /* windows */ {wxFONTENCODING_CP1252, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Central European
    {
        /* unix    */ {wxFONTENCODING_ISO8859_2, STOP},
        /* windows */ {wxFONTENCODING_CP1250, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Baltic
    {
        /* unix    */ {wxFONTENCODING_ISO8859_13, STOP},
        /* windows */ {wxFONTENCODING_CP1257, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Hebrew
    {
        /* unix    */ {wxFONTENCODING_ISO8859_8, STOP},
        /* windows */ {wxFONTENCODING_CP1255, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Greek
    {
        /* unix    */ {wxFONTENCODING_ISO8859_7, STOP},
        /* windows */ {wxFONTENCODING_CP1253, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Arabic
    {
        /* unix    */ {wxFONTENCODING_ISO8859_6, STOP},
        /* windows */ {wxFONTENCODING_CP1256, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Turkish
    {
        /* unix    */ {wxFONTENCODING_ISO8859_9, STOP},
        /* windows */ {wxFONTENCODING_CP1254, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Cyrillic
    {
        /* unix    */ {wxFONTENCODING_ISO8859_13, wxFONTENCODING_ISO8859_4,
                       wxFONTENCODING_ISO8859_15, wxFONTENCODING_ISO8859_1, STOP},
        /* windows */ {wxFONTENCODING_CP1257, wxFONTENCODING_CP1252, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    // Russia and other KOI-8 users:
    {
        /* unix    */ {wxFONTENCODING_KOI8, wxFONTENCODING_ISO8859_5, STOP},
        /* windows */ {wxFONTENCODING_CP1251, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

    {{STOP},{STOP},{STOP},{STOP}} /* Terminator */
    /* no, _not_ Arnold! */
};


wxFontEncodingArray wxEncodingConverter::GetPlatformEquivalents(wxFontEncoding enc, int platform)
{
    if (platform == wxPLATFORM_CURRENT)
    {
#if defined(__WXMSW__)
        platform = wxPLATFORM_WINDOWS;
#elif defined(__WXGTK__) || defined(__WXMOTIF__)
        platform = wxPLATFORM_UNIX;
#elif defined(__WXOS2__)
        platform = wxPLATFORM_OS2;
#elif defined(__WXMAC__)
        platform = wxPLATFORM_MAC;
#endif
    }

    int i, clas, e ;
    wxFontEncoding *f;
    wxFontEncodingArray arr;

    clas = 0;
    while (EquivalentEncodings[clas][0][0] != STOP)
    {
        for (i = 0; i < NUM_OF_PLATFORMS; i++)
            for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
                if (EquivalentEncodings[clas][i][e] == enc)
                {
                    for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
                        if (*f == enc) arr.Add(enc);
                    for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
                        if (arr.Index(*f) == wxNOT_FOUND) arr.Add(*f);
                    i = NUM_OF_PLATFORMS/*hack*/; break;
                }
        clas++;
    }

    return arr;
}


wxFontEncodingArray wxEncodingConverter::GetAllEquivalents(wxFontEncoding enc)
{
    int i, clas, e, j ;
    wxFontEncoding *f;
    wxFontEncodingArray arr;

    arr = GetPlatformEquivalents(enc); // we want them to be first items in array

    clas = 0;
    while (EquivalentEncodings[clas][0][0] != STOP)
    {
        for (i = 0; i < NUM_OF_PLATFORMS; i++)
            for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
                if (EquivalentEncodings[clas][i][e] == enc)
                {
                    for (j = 0; j < NUM_OF_PLATFORMS; j++)
                        for (f = EquivalentEncodings[clas][j]; *f != STOP; f++)
                            if (arr.Index(*f) == wxNOT_FOUND) arr.Add(*f);
                    i = NUM_OF_PLATFORMS/*hack*/; break;
                }
        clas++;
    }

    return arr;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: encconv.cpp
	3	// Purpose: wxEncodingConverter class for converting between different
	4	// font encodings
	5	// Author: Vaclav Slavik
	6	// Copyright: (c) 1999 Vaclav Slavik
	7	// Licence: wxWindows Licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation "encconv.h"
	12	#endif
	13
	14	// For compilers that support precompilation, includes "wx.h".
	15	#include "wx/wxprec.h"
	16
	17	#ifdef __BORLANDC__
	18	#pragma hdrstop
	19	#endif
	20
	21	#include "wx/encconv.h"
	22
	23	#include <stdlib.h>
	24
	25	// conversion tables, generated by scripts in $(WXWIN)/misc/unictabl:
	26	#ifdef __BORLANDC__
	27	#include "../common/unictabl.inc"
	28	#else
	29	#include "unictabl.inc"
	30	#endif
	31
	32	#if wxUSE_WCHAR_T
	33	typedef wchar_t tchar;
	34	#else
	35	typedef char tchar;
	36	#endif
	37
	38	static wxUint16* LINKAGEMODE GetEncTable(wxFontEncoding enc)
	39	{
	40	for (int i = 0; encodings_list[i].table != NULL; i++)
	41	{
	42	if (encodings_list[i].encoding == enc)
	43	return encodings_list[i].table;
	44	}
	45	return NULL;
	46	}
	47
	48	typedef struct {
	49	wxUint16 u;
	50	wxUint8 c;
	51	} CharsetItem;
	52
	53
	54
	55	static int LINKAGEMODE CompareCharsetItems(const void i1, const void i2)
	56	{
	57	return ( ((CharsetItem)i1) -> u - ((CharsetItem)i2) -> u );
	58	}
	59
	60
	61	static CharsetItem* LINKAGEMODE BuildReverseTable(wxUint16 *tbl)
	62	{
	63	CharsetItem *rev = new CharsetItem[128];
	64
	65	for (int i = 0; i < 128; i++)
	66	rev[i].c = 128 + i, rev[i].u = tbl[i];
	67
	68	qsort(rev, 128, sizeof(CharsetItem), CompareCharsetItems);
	69
	70	return rev;
	71	}
	72
	73
	74
	75	wxEncodingConverter::wxEncodingConverter()
	76	{
	77	m_Table = NULL;
	78	m_UnicodeInput = m_UnicodeOutput = FALSE;
	79	m_JustCopy = FALSE;
	80	}
	81
	82
	83
	84	bool wxEncodingConverter::Init(wxFontEncoding input_enc, wxFontEncoding output_enc, int method)
	85	{
	86	unsigned i;
	87	wxUint16 in_tbl = NULL, out_tbl = NULL;
	88
	89	if (m_Table) {delete[] m_Table; m_Table = NULL;}
	90
	91	#if !wxUSE_WCHAR_T
	92	if (input_enc == wxFONTENCODING_UNICODE \|\| output_enc == wxFONTENCODING_UNICODE) return FALSE;
	93	#endif
	94
	95	if (input_enc == output_enc) {m_JustCopy = TRUE; return TRUE;}
	96
	97	m_UnicodeOutput = (output_enc == wxFONTENCODING_UNICODE);
	98	m_JustCopy = FALSE;
	99
	100	if (input_enc == wxFONTENCODING_UNICODE)
	101	{
	102	if ((out_tbl = GetEncTable(output_enc)) == NULL) return FALSE;
	103
	104	m_Table = new tchar[65536];
	105	for (i = 0; i < 128; i++) m_Table[i] = (tchar)i; // 7bit ASCII
	106	for (i = 128; i < 65536; i++) m_Table[i] = (tchar)'?';
	107	// FIXME - this should be character that means `unicode to charset' impossible, not '?'
	108
	109	if (method == wxCONVERT_SUBSTITUTE)
	110	{
	111	for (i = 0; i < encoding_unicode_fallback_count; i++)
	112	m_Table[encoding_unicode_fallback[i].c] = (tchar) encoding_unicode_fallback[i].s;
	113	}
	114
	115	for (i = 0; i < 128; i++)
	116	m_Table[out_tbl[i]] = (tchar)(128 + i);
	117
	118	m_UnicodeInput = TRUE;
	119	return TRUE;
	120	}
	121
	122	else
	123	{
	124	if ((in_tbl = GetEncTable(input_enc)) == NULL) return FALSE;
	125	if (output_enc != wxFONTENCODING_UNICODE)
	126	if ((out_tbl = GetEncTable(output_enc)) == NULL) return FALSE;
	127
	128	m_UnicodeInput = FALSE;
	129
	130	m_Table = new tchar[256];
	131	for (i = 0; i < 128; i++) m_Table[i] = (tchar)i; // 7bit ASCII
	132
	133	if (output_enc == wxFONTENCODING_UNICODE)
	134	{
	135	for (i = 0; i < 128; i++) m_Table[128 + i] = (tchar)in_tbl[i];
	136	return TRUE;
	137	}
	138	else
	139	{
	140	CharsetItem *rev = BuildReverseTable(out_tbl);
	141	CharsetItem *item, key;
	142
	143	for (i = 0; i < 128; i++)
	144	{
	145	key.u = in_tbl[i];
	146	item = (CharsetItem*) bsearch(&key, rev, 128, sizeof(CharsetItem), CompareCharsetItems);
	147	if (item == NULL && method == wxCONVERT_SUBSTITUTE)
	148	item = (CharsetItem*) bsearch(&key, encoding_unicode_fallback,
	149	encoding_unicode_fallback_count, sizeof(CharsetItem), CompareCharsetItems);
	150	if (item)
	151	m_Table[128 + i] = (tchar)item -> c;
	152	else
	153	m_Table[128 + i] = 128 + i; // don't know => don't touch
	154	}
	155
	156	delete[] rev;
	157	return TRUE;
	158	}
	159	}
	160	}
	161
	162
	163
	164	void wxEncodingConverter::Convert(const char* input, char* output)
	165	{
	166	wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
	167	wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));
	168
	169	const char *i;
	170	char *o;
	171
	172	if (m_JustCopy)
	173	{
	174	strcpy(output, input);
	175	return;
	176	}
	177
	178	wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	179
	180	for (i = input, o = output; *i != 0;)
	181	(o++) = (char)(m_Table[(wxUint8)(i++)]);
	182	*o = 0;
	183	}
	184
	185
	186	#if wxUSE_WCHAR_T
	187
	188	void wxEncodingConverter::Convert(const char* input, wchar_t* output)
	189	{
	190	wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
	191	wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));
	192
	193	const char *i;
	194	wchar_t *o;
	195
	196	if (m_JustCopy)
	197	{
	198	for (i = input, o = output; *i != 0;)
	199	(o++) = (wchar_t)((i++));
	200	*o = 0;
	201	return;
	202	}
	203
	204	wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	205
	206	for (i = input, o = output; *i != 0;)
	207	(o++) = (wchar_t)(m_Table[(wxUint8)(i++)]);
	208	*o = 0;
	209	}
	210
	211
	212
	213	void wxEncodingConverter::Convert(const wchar_t* input, char* output)
	214	{
	215	wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
	216	wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));
	217
	218	const wchar_t *i;
	219	char *o;
	220
	221	if (m_JustCopy)
	222	{
	223	for (i = input, o = output; *i != 0;)
	224	(o++) = (char)((i++));
	225	*o = 0;
	226	return;
	227	}
	228
	229	wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	230
	231	for (i = input, o = output; *i != 0;)
	232	(o++) = (char)(m_Table[(wxUint16)(i++)]);
	233	*o = 0;
	234	}
	235
	236
	237
	238	void wxEncodingConverter::Convert(const wchar_t* input, wchar_t* output)
	239	{
	240	wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
	241	wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));
	242
	243	const wchar_t *i;
	244	wchar_t *o;
	245
	246	if (m_JustCopy)
	247	{
	248	// wcscpy() is not guaranteed to exist
	249	for (i = input, o = output; *i != 0;)
	250	(o++) = ((i++));
	251	*o = 0;
	252	return;
	253	}
	254
	255	wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	256
	257	for (i = input, o = output; *i != 0;)
	258	(o++) = (wchar_t)(m_Table[(wxUint8)(i++)]);
	259	*o = 0;
	260	}
	261
	262	#endif // wxUSE_WCHAR_T
	263
	264
	265	wxString wxEncodingConverter::Convert(const wxString& input)
	266	{
	267	if (m_JustCopy) return input;
	268
	269	wxString s;
	270	const wxChar *i;
	271
	272	wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	273
	274	if (m_UnicodeInput)
	275	for (i = input.c_str(); *i != 0; i++)
	276	s << (wxChar)(m_Table[(wxUint16)*i]);
	277	else
	278	for (i = input.c_str(); *i != 0; i++)
	279	s << (wxChar)(m_Table[(wxUint8)*i]);
	280	return s;
	281	}
	282
	283
	284
	285
	286
	287
	288
	289	// Following tables describe classes of encoding equivalence.
	290	//
	291
	292	#define STOP wxFONTENCODING_SYSTEM
	293
	294	#define NUM_OF_PLATFORMS 4 /must conform to enum wxPLATFORM_XXXX !!!/
	295	#define ENC_PER_PLATFORM 5
	296	// max no. of encodings for one language used on one platform
	297	// Anybody thinks 5 is not enough? ;-)
	298
	299	static wxFontEncoding
	300	EquivalentEncodings[][NUM_OF_PLATFORMS][ENC_PER_PLATFORM+1] = {
	301
	302	// * Please put more common encodings as first! *
	303
	304	// West European
	305	{
	306	/* unix */ {wxFONTENCODING_ISO8859_1, wxFONTENCODING_ISO8859_15, STOP},
	307	/* windows */ {wxFONTENCODING_CP1252, STOP},
	308	/* os2 */ {STOP},
	309	/* mac */ {STOP}
	310	},
	311
	312	// Central European
	313	{
	314	/* unix */ {wxFONTENCODING_ISO8859_2, STOP},
	315	/* windows */ {wxFONTENCODING_CP1250, STOP},
	316	/* os2 */ {STOP},
	317	/* mac */ {STOP}
	318	},
	319
	320	// Baltic
	321	{
	322	/* unix */ {wxFONTENCODING_ISO8859_13, STOP},
	323	/* windows */ {wxFONTENCODING_CP1257, STOP},
	324	/* os2 */ {STOP},
	325	/* mac */ {STOP}
	326	},
	327
	328	// Hebrew
	329	{
	330	/* unix */ {wxFONTENCODING_ISO8859_8, STOP},
	331	/* windows */ {wxFONTENCODING_CP1255, STOP},
	332	/* os2 */ {STOP},
	333	/* mac */ {STOP}
	334	},
	335
	336	// Greek
	337	{
	338	/* unix */ {wxFONTENCODING_ISO8859_7, STOP},
	339	/* windows */ {wxFONTENCODING_CP1253, STOP},
	340	/* os2 */ {STOP},
	341	/* mac */ {STOP}
	342	},
	343
	344	// Arabic
	345	{
	346	/* unix */ {wxFONTENCODING_ISO8859_6, STOP},
	347	/* windows */ {wxFONTENCODING_CP1256, STOP},
	348	/* os2 */ {STOP},
	349	/* mac */ {STOP}
	350	},
	351
	352	// Turkish
	353	{
	354	/* unix */ {wxFONTENCODING_ISO8859_9, STOP},
	355	/* windows */ {wxFONTENCODING_CP1254, STOP},
	356	/* os2 */ {STOP},
	357	/* mac */ {STOP}
	358	},
	359
	360	// Cyrillic
	361	{
	362	/* unix */ {wxFONTENCODING_ISO8859_13, wxFONTENCODING_ISO8859_4,
	363	wxFONTENCODING_ISO8859_15, wxFONTENCODING_ISO8859_1, STOP},
	364	/* windows */ {wxFONTENCODING_CP1257, wxFONTENCODING_CP1252, STOP},
	365	/* os2 */ {STOP},
	366	/* mac */ {STOP}
	367	},
	368
	369	// Russia and other KOI-8 users:
	370	{
	371	/* unix */ {wxFONTENCODING_KOI8, wxFONTENCODING_ISO8859_5, STOP},
	372	/* windows */ {wxFONTENCODING_CP1251, STOP},
	373	/* os2 */ {STOP},
	374	/* mac */ {STOP}
	375	},
	376
	377	{{STOP},{STOP},{STOP},{STOP}} /* Terminator */
	378	/* no, _not_ Arnold! */
	379	};
	380
	381
	382
	383
	384	wxFontEncodingArray wxEncodingConverter::GetPlatformEquivalents(wxFontEncoding enc, int platform)
	385	{
	386	if (platform == wxPLATFORM_CURRENT)
	387	{
	388	#if defined(__WXMSW__)
	389	platform = wxPLATFORM_WINDOWS;
	390	#elif defined(__WXGTK__) \|\| defined(__WXMOTIF__)
	391	platform = wxPLATFORM_UNIX;
	392	#elif defined(__WXOS2__)
	393	platform = wxPLATFORM_OS2;
	394	#elif defined(__WXMAC__)
	395	platform = wxPLATFORM_MAC;
	396	#endif
	397	}
	398
	399	int i, clas, e ;
	400	wxFontEncoding *f;
	401	wxFontEncodingArray arr;
	402
	403	clas = 0;
	404	while (EquivalentEncodings[clas][0][0] != STOP)
	405	{
	406	for (i = 0; i < NUM_OF_PLATFORMS; i++)
	407	for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
	408	if (EquivalentEncodings[clas][i][e] == enc)
	409	{
	410	for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
	411	if (*f == enc) arr.Add(enc);
	412	for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
	413	if (arr.Index(f) == wxNOT_FOUND) arr.Add(f);
	414	i = NUM_OF_PLATFORMS/hack/; break;
	415	}
	416	clas++;
	417	}
	418
	419	return arr;
	420	}
	421
	422
	423
	424	wxFontEncodingArray wxEncodingConverter::GetAllEquivalents(wxFontEncoding enc)
	425	{
	426	int i, clas, e, j ;
	427	wxFontEncoding *f;
	428	wxFontEncodingArray arr;
	429
	430	arr = GetPlatformEquivalents(enc); // we want them to be first items in array
	431
	432	clas = 0;
	433	while (EquivalentEncodings[clas][0][0] != STOP)
	434	{
	435	for (i = 0; i < NUM_OF_PLATFORMS; i++)
	436	for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
	437	if (EquivalentEncodings[clas][i][e] == enc)
	438	{
	439	for (j = 0; j < NUM_OF_PLATFORMS; j++)
	440	for (f = EquivalentEncodings[clas][j]; *f != STOP; f++)
	441	if (arr.Index(f) == wxNOT_FOUND) arr.Add(f);
	442	i = NUM_OF_PLATFORMS/hack/; break;
	443	}
	444	clas++;
	445	}
	446
	447	return arr;
	448	}