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
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "encconv.h"
#endif

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

#ifdef __BORLANDC__
  #pragma hdrstop
#endif

#if wxUSE_FONTMAP

#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

#ifdef __WXWINCE__
#undef LINKAGEMODE
#define LINKAGEMODE __cdecl
#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;

extern "C" 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, *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;
    }
    else // input !Unicode
    {
        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;
        }
        // FIXME: write a substitute for bsearch
#ifndef __WXWINCE__
        else // output !Unicode
        {
            CharsetItem *rev = BuildReverseTable(out_tbl);
            CharsetItem *item;
            CharsetItem 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
#if wxUSE_WCHAR_T
                    m_Table[128 + i] = (wchar_t)(128 + i);
#else
                    m_Table[128 + i] = (char)(128 + i);
#endif
            }

            delete[] rev;
        }
#endif // !__WXWINCE__
    }

    return TRUE;
}


void wxEncodingConverter::Convert(const char* input, char* output) const
{
    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;
    }

    wxCHECK_RET(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) const
{
    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;
    }

    wxCHECK_RET(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) const
{
    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;
    }

    wxCHECK_RET(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) const
{
    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;
    }

    wxCHECK_RET(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) const
{
    if (m_JustCopy) return input;

    wxString s;
    const wxChar *i;

    wxCHECK_MSG(m_Table != NULL, s,
                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! ***

    // Western 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, wxFONTENCODING_ISO8859_4, 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_KOI8, wxFONTENCODING_ISO8859_5, STOP},
        /* windows */ {wxFONTENCODING_CP1251, STOP},
        /* os2     */ {STOP},
        /* mac     */ {STOP}
    },

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


static bool FindEncoding(const wxFontEncodingArray& arr, wxFontEncoding f)
{
    for (wxFontEncodingArray::const_iterator it = arr.begin(), en = arr.end();
         it != en; ++it)
        if (*it == f)
            return true;
    return false;
}

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.push_back(enc);
                    for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
                        if (!FindEncoding(arr, *f)) arr.push_back(*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 (!FindEncoding(arr, *f)) arr.push_back(*f);
                    i = NUM_OF_PLATFORMS/*hack*/; break;
                }
        clas++;
    }

    return arr;
}

#endif // wxUSE_FONTMAP
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	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	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	#if wxUSE_FONTMAP
	22
	23	#include "wx/encconv.h"
	24
	25	#include <stdlib.h>
	26
	27	// conversion tables, generated by scripts in $(WXWIN)/misc/unictabl:
	28	#ifdef __BORLANDC__
	29	#include "../common/unictabl.inc"
	30	#else
	31	#include "unictabl.inc"
	32	#endif
	33
	34	#if wxUSE_WCHAR_T
	35	typedef wchar_t tchar;
	36	#else
	37	typedef char tchar;
	38	#endif
	39
	40	#ifdef __WXWINCE__
	41	#undef LINKAGEMODE
	42	#define LINKAGEMODE __cdecl
	43	#endif
	44
	45	static wxUint16* LINKAGEMODE GetEncTable(wxFontEncoding enc)
	46	{
	47	for (int i = 0; encodings_list[i].table != NULL; i++)
	48	{
	49	if (encodings_list[i].encoding == enc)
	50	return encodings_list[i].table;
	51	}
	52	return NULL;
	53	}
	54
	55	typedef struct {
	56	wxUint16 u;
	57	wxUint8 c;
	58	} CharsetItem;
	59
	60	extern "C" int LINKAGEMODE CompareCharsetItems(const void i1, const void i2)
	61	{
	62	return ( ((CharsetItem)i1) -> u - ((CharsetItem)i2) -> u );
	63	}
	64
	65
	66	static CharsetItem* LINKAGEMODE BuildReverseTable(wxUint16 *tbl)
	67	{
	68	CharsetItem *rev = new CharsetItem[128];
	69
	70	for (int i = 0; i < 128; i++)
	71	rev[i].c = 128 + i, rev[i].u = tbl[i];
	72
	73	qsort(rev, 128, sizeof(CharsetItem), CompareCharsetItems);
	74
	75	return rev;
	76	}
	77
	78
	79
	80	wxEncodingConverter::wxEncodingConverter()
	81	{
	82	m_Table = NULL;
	83	m_UnicodeInput = m_UnicodeOutput = FALSE;
	84	m_JustCopy = FALSE;
	85	}
	86
	87
	88
	89	bool wxEncodingConverter::Init(wxFontEncoding input_enc, wxFontEncoding output_enc, int method)
	90	{
	91	unsigned i;
	92	wxUint16 in_tbl, out_tbl = NULL;
	93
	94	if (m_Table) {delete[] m_Table; m_Table = NULL;}
	95
	96	#if !wxUSE_WCHAR_T
	97	if (input_enc == wxFONTENCODING_UNICODE \|\| output_enc == wxFONTENCODING_UNICODE) return FALSE;
	98	#endif
	99
	100	if (input_enc == output_enc) {m_JustCopy = TRUE; return TRUE;}
	101
	102	m_UnicodeOutput = (output_enc == wxFONTENCODING_UNICODE);
	103	m_JustCopy = FALSE;
	104
	105	if (input_enc == wxFONTENCODING_UNICODE)
	106	{
	107	if ((out_tbl = GetEncTable(output_enc)) == NULL) return FALSE;
	108
	109	m_Table = new tchar[65536];
	110	for (i = 0; i < 128; i++) m_Table[i] = (tchar)i; // 7bit ASCII
	111	for (i = 128; i < 65536; i++) m_Table[i] = (tchar)'?';
	112	// FIXME - this should be character that means `unicode to charset' impossible, not '?'
	113
	114	if (method == wxCONVERT_SUBSTITUTE)
	115	{
	116	for (i = 0; i < encoding_unicode_fallback_count; i++)
	117	m_Table[encoding_unicode_fallback[i].c] = (tchar) encoding_unicode_fallback[i].s;
	118	}
	119
	120	for (i = 0; i < 128; i++)
	121	m_Table[out_tbl[i]] = (tchar)(128 + i);
	122
	123	m_UnicodeInput = TRUE;
	124	}
	125	else // input !Unicode
	126	{
	127	if ((in_tbl = GetEncTable(input_enc)) == NULL) return FALSE;
	128	if (output_enc != wxFONTENCODING_UNICODE)
	129	if ((out_tbl = GetEncTable(output_enc)) == NULL) return FALSE;
	130
	131	m_UnicodeInput = FALSE;
	132
	133	m_Table = new tchar[256];
	134	for (i = 0; i < 128; i++) m_Table[i] = (tchar)i; // 7bit ASCII
	135
	136	if (output_enc == wxFONTENCODING_UNICODE)
	137	{
	138	for (i = 0; i < 128; i++) m_Table[128 + i] = (tchar)in_tbl[i];
	139	return TRUE;
	140	}
	141	// FIXME: write a substitute for bsearch
	142	#ifndef __WXWINCE__
	143	else // output !Unicode
	144	{
	145	CharsetItem *rev = BuildReverseTable(out_tbl);
	146	CharsetItem *item;
	147	CharsetItem key;
	148
	149	for (i = 0; i < 128; i++)
	150	{
	151	key.u = in_tbl[i];
	152	item = (CharsetItem*) bsearch(&key, rev, 128, sizeof(CharsetItem), CompareCharsetItems);
	153	if (item == NULL && method == wxCONVERT_SUBSTITUTE)
	154	item = (CharsetItem*) bsearch(&key, encoding_unicode_fallback,
	155	encoding_unicode_fallback_count, sizeof(CharsetItem), CompareCharsetItems);
	156	if (item)
	157	m_Table[128 + i] = (tchar)item -> c;
	158	else
	159	#if wxUSE_WCHAR_T
	160	m_Table[128 + i] = (wchar_t)(128 + i);
	161	#else
	162	m_Table[128 + i] = (char)(128 + i);
	163	#endif
	164	}
	165
	166	delete[] rev;
	167	}
	168	#endif // !__WXWINCE__
	169	}
	170
	171	return TRUE;
	172	}
	173
	174
	175
	176	void wxEncodingConverter::Convert(const char* input, char* output) const
	177	{
	178	wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
	179	wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));
	180
	181	const char *i;
	182	char *o;
	183
	184	if (m_JustCopy)
	185	{
	186	strcpy(output, input);
	187	return;
	188	}
	189
	190	wxCHECK_RET(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	191
	192	for (i = input, o = output; *i != 0;)
	193	(o++) = (char)(m_Table[(wxUint8)(i++)]);
	194	*o = 0;
	195	}
	196
	197
	198	#if wxUSE_WCHAR_T
	199
	200	void wxEncodingConverter::Convert(const char* input, wchar_t* output) const
	201	{
	202	wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
	203	wxASSERT_MSG(!m_UnicodeInput, wxT("You cannot convert from unicode if input is const char*!"));
	204
	205	const char *i;
	206	wchar_t *o;
	207
	208	if (m_JustCopy)
	209	{
	210	for (i = input, o = output; *i != 0;)
	211	(o++) = (wchar_t)((i++));
	212	*o = 0;
	213	return;
	214	}
	215
	216	wxCHECK_RET(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	217
	218	for (i = input, o = output; *i != 0;)
	219	(o++) = (wchar_t)(m_Table[(wxUint8)(i++)]);
	220	*o = 0;
	221	}
	222
	223
	224
	225	void wxEncodingConverter::Convert(const wchar_t* input, char* output) const
	226	{
	227	wxASSERT_MSG(!m_UnicodeOutput, wxT("You cannot convert to unicode if output is const char*!"));
	228	wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));
	229
	230	const wchar_t *i;
	231	char *o;
	232
	233	if (m_JustCopy)
	234	{
	235	for (i = input, o = output; *i != 0;)
	236	(o++) = (char)((i++));
	237	*o = 0;
	238	return;
	239	}
	240
	241	wxCHECK_RET(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	242
	243	for (i = input, o = output; *i != 0;)
	244	(o++) = (char)(m_Table[(wxUint16)(i++)]);
	245	*o = 0;
	246	}
	247
	248
	249
	250	void wxEncodingConverter::Convert(const wchar_t* input, wchar_t* output) const
	251	{
	252	wxASSERT_MSG(m_UnicodeOutput, wxT("You cannot convert to 8-bit if output is const wchar_t*!"));
	253	wxASSERT_MSG(m_UnicodeInput, wxT("You cannot convert from 8-bit if input is const wchar_t*!"));
	254
	255	const wchar_t *i;
	256	wchar_t *o;
	257
	258	if (m_JustCopy)
	259	{
	260	// wcscpy() is not guaranteed to exist
	261	for (i = input, o = output; *i != 0;)
	262	(o++) = ((i++));
	263	*o = 0;
	264	return;
	265	}
	266
	267	wxCHECK_RET(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	268
	269	for (i = input, o = output; *i != 0;)
	270	(o++) = (wchar_t)(m_Table[(wxUint8)(i++)]);
	271	*o = 0;
	272	}
	273
	274	#endif // wxUSE_WCHAR_T
	275
	276
	277	wxString wxEncodingConverter::Convert(const wxString& input) const
	278	{
	279	if (m_JustCopy) return input;
	280
	281	wxString s;
	282	const wxChar *i;
	283
	284	wxCHECK_MSG(m_Table != NULL, s,
	285	wxT("You must call wxEncodingConverter::Init() before actually converting!"));
	286
	287	if (m_UnicodeInput)
	288	{
	289	for (i = input.c_str(); *i != 0; i++)
	290	s << (wxChar)(m_Table[(wxUint16)*i]);
	291	}
	292	else
	293	{
	294	for (i = input.c_str(); *i != 0; i++)
	295	s << (wxChar)(m_Table[(wxUint8)*i]);
	296	}
	297
	298	return s;
	299	}
	300
	301
	302
	303
	304
	305
	306
	307	// Following tables describe classes of encoding equivalence.
	308	//
	309
	310	#define STOP wxFONTENCODING_SYSTEM
	311
	312	#define NUM_OF_PLATFORMS 4 /must conform to enum wxPLATFORM_XXXX !!!/
	313	#define ENC_PER_PLATFORM 5
	314	// max no. of encodings for one language used on one platform
	315	// Anybody thinks 5 is not enough? ;-)
	316
	317	static wxFontEncoding
	318	EquivalentEncodings[][NUM_OF_PLATFORMS][ENC_PER_PLATFORM+1] = {
	319
	320	// * Please put more common encodings as first! *
	321
	322	// Western European
	323	{
	324	/* unix */ {wxFONTENCODING_ISO8859_1, wxFONTENCODING_ISO8859_15, STOP},
	325	/* windows */ {wxFONTENCODING_CP1252, STOP},
	326	/* os2 */ {STOP},
	327	/* mac */ {STOP}
	328	},
	329
	330	// Central European
	331	{
	332	/* unix */ {wxFONTENCODING_ISO8859_2, STOP},
	333	/* windows */ {wxFONTENCODING_CP1250, STOP},
	334	/* os2 */ {STOP},
	335	/* mac */ {STOP}
	336	},
	337
	338	// Baltic
	339	{
	340	/* unix */ {wxFONTENCODING_ISO8859_13, wxFONTENCODING_ISO8859_4, STOP},
	341	/* windows */ {wxFONTENCODING_CP1257, STOP},
	342	/* os2 */ {STOP},
	343	/* mac */ {STOP}
	344	},
	345
	346	// Hebrew
	347	{
	348	/* unix */ {wxFONTENCODING_ISO8859_8, STOP},
	349	/* windows */ {wxFONTENCODING_CP1255, STOP},
	350	/* os2 */ {STOP},
	351	/* mac */ {STOP}
	352	},
	353
	354	// Greek
	355	{
	356	/* unix */ {wxFONTENCODING_ISO8859_7, STOP},
	357	/* windows */ {wxFONTENCODING_CP1253, STOP},
	358	/* os2 */ {STOP},
	359	/* mac */ {STOP}
	360	},
	361
	362	// Arabic
	363	{
	364	/* unix */ {wxFONTENCODING_ISO8859_6, STOP},
	365	/* windows */ {wxFONTENCODING_CP1256, STOP},
	366	/* os2 */ {STOP},
	367	/* mac */ {STOP}
	368	},
	369
	370	// Turkish
	371	{
	372	/* unix */ {wxFONTENCODING_ISO8859_9, STOP},
	373	/* windows */ {wxFONTENCODING_CP1254, STOP},
	374	/* os2 */ {STOP},
	375	/* mac */ {STOP}
	376	},
	377
	378	// Cyrillic
	379	{
	380	/* unix */ {wxFONTENCODING_KOI8, wxFONTENCODING_ISO8859_5, STOP},
	381	/* windows */ {wxFONTENCODING_CP1251, STOP},
	382	/* os2 */ {STOP},
	383	/* mac */ {STOP}
	384	},
	385
	386	{{STOP},{STOP},{STOP},{STOP}} /* Terminator */
	387	/* no, _not_ Arnold! */
	388	};
	389
	390
	391	static bool FindEncoding(const wxFontEncodingArray& arr, wxFontEncoding f)
	392	{
	393	for (wxFontEncodingArray::const_iterator it = arr.begin(), en = arr.end();
	394	it != en; ++it)
	395	if (*it == f)
	396	return true;
	397	return false;
	398	}
	399
	400	wxFontEncodingArray wxEncodingConverter::GetPlatformEquivalents(wxFontEncoding enc, int platform)
	401	{
	402	if (platform == wxPLATFORM_CURRENT)
	403	{
	404	#if defined(__WXMSW__)
	405	platform = wxPLATFORM_WINDOWS;
	406	#elif defined(__WXGTK__) \|\| defined(__WXMOTIF__)
	407	platform = wxPLATFORM_UNIX;
	408	#elif defined(__WXOS2__)
	409	platform = wxPLATFORM_OS2;
	410	#elif defined(__WXMAC__)
	411	platform = wxPLATFORM_MAC;
	412	#endif
	413	}
	414
	415	int i, clas, e ;
	416	wxFontEncoding *f;
	417	wxFontEncodingArray arr;
	418
	419	clas = 0;
	420	while (EquivalentEncodings[clas][0][0] != STOP)
	421	{
	422	for (i = 0; i < NUM_OF_PLATFORMS; i++)
	423	for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
	424	if (EquivalentEncodings[clas][i][e] == enc)
	425	{
	426	for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
	427	if (*f == enc) arr.push_back(enc);
	428	for (f = EquivalentEncodings[clas][platform]; *f != STOP; f++)
	429	if (!FindEncoding(arr, f)) arr.push_back(f);
	430	i = NUM_OF_PLATFORMS/hack/; break;
	431	}
	432	clas++;
	433	}
	434
	435	return arr;
	436	}
	437
	438
	439
	440	wxFontEncodingArray wxEncodingConverter::GetAllEquivalents(wxFontEncoding enc)
	441	{
	442	int i, clas, e, j ;
	443	wxFontEncoding *f;
	444	wxFontEncodingArray arr;
	445
	446	arr = GetPlatformEquivalents(enc); // we want them to be first items in array
	447
	448	clas = 0;
	449	while (EquivalentEncodings[clas][0][0] != STOP)
	450	{
	451	for (i = 0; i < NUM_OF_PLATFORMS; i++)
	452	for (e = 0; EquivalentEncodings[clas][i][e] != STOP; e++)
	453	if (EquivalentEncodings[clas][i][e] == enc)
	454	{
	455	for (j = 0; j < NUM_OF_PLATFORMS; j++)
	456	for (f = EquivalentEncodings[clas][j]; *f != STOP; f++)
	457	if (!FindEncoding(arr, f)) arr.push_back(f);
	458	i = NUM_OF_PLATFORMS/hack/; break;
	459	}
	460	clas++;
	461	}
	462
	463	return arr;
	464	}
	465
	466	#endif // wxUSE_FONTMAP