added wxEncodingConverter
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5159 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík
294
src/common/encconv.cpp
Normal file
294
src/common/encconv.cpp
Normal file
@@ -0,0 +1,294 @@
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
// 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>
|
||||
|
||||
#include "unictabl.inc"
|
||||
// conversion tables, generated by scripts in $(WXWIN)/misc/unictabl
|
||||
|
||||
|
||||
static wxUint16 *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 CompareCharsetItems(const void *i1, const void *i2)
|
||||
{
|
||||
return ( ((CharsetItem*)i1) -> u - ((CharsetItem*)i2) -> u );
|
||||
}
|
||||
|
||||
|
||||
static CharsetItem* 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 = 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_UNICODE
|
||||
if (input_enc == wxFONTENCODING_UNICODE || output_enc == wxFONTENCODING_UNICODE) return FALSE;
|
||||
#endif
|
||||
|
||||
if (input_enc == output_enc) {m_JustCopy = TRUE; return TRUE;}
|
||||
|
||||
m_JustCopy = FALSE;
|
||||
|
||||
if (input_enc == wxFONTENCODING_UNICODE)
|
||||
{
|
||||
if ((out_tbl = GetEncTable(output_enc)) == NULL) return FALSE;
|
||||
|
||||
m_Table = new wxChar[65536];
|
||||
for (i = 0; i < 128; i++) m_Table[i] = (wxChar)i; // 7bit ASCII
|
||||
for (i = 128; i < 65536; i++) m_Table[i] = (wxChar)'?';
|
||||
// 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] = (wxChar) encoding_unicode_fallback[i].s;
|
||||
}
|
||||
|
||||
for (i = 0; i < 128; i++)
|
||||
m_Table[out_tbl[i]] = (wxChar)(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 wxChar[256];
|
||||
for (i = 0; i < 128; i++) m_Table[i] = (wxChar)i; // 7bit ASCII
|
||||
|
||||
if (output_enc == wxFONTENCODING_UNICODE)
|
||||
{
|
||||
for (i = 0; i < 128; i++) m_Table[128 + i] = (wxChar)in_tbl[i]; // wxChar is 2byte now
|
||||
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] = (wxChar)item -> c;
|
||||
else
|
||||
m_Table[128 + i] = 128 + i; // don't know => don't touch
|
||||
}
|
||||
|
||||
delete[] rev;
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void wxEncodingConverter::Convert(const wxChar* input, wxChar* output)
|
||||
{
|
||||
if (m_JustCopy)
|
||||
{
|
||||
wxStrcpy(output, input);
|
||||
return;
|
||||
}
|
||||
|
||||
wxASSERT_MSG(m_Table != NULL, wxT("You must call wxEncodingConverter::Init() before actually converting!"));
|
||||
|
||||
const wxChar *i;
|
||||
wxChar *o;
|
||||
|
||||
if (m_UnicodeInput)
|
||||
for (i = input, o = output; *i != 0; i++, o++)
|
||||
*o = (wxChar)(m_Table[(wxUint16)*i]);
|
||||
else
|
||||
for (i = input, o = output; *i != 0; i++, o++)
|
||||
*o = (wxChar)(m_Table[(wxUint8)*i]);
|
||||
*o = 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
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 3
|
||||
// max no. of encodings for one language used on one platform
|
||||
// Anybody thinks 3 is not enough? ;-)
|
||||
|
||||
static wxFontEncoding
|
||||
EquivalentEncodings[][NUM_OF_PLATFORMS][ENC_PER_PLATFORM+1] = {
|
||||
|
||||
// West European (Latin1)
|
||||
{
|
||||
/* unix */ {wxFONTENCODING_ISO8859_1, wxFONTENCODING_ISO8859_15, STOP},
|
||||
/* windows */ {wxFONTENCODING_CP1252, STOP},
|
||||
/* os2 */ {STOP},
|
||||
/* mac */ {STOP}
|
||||
},
|
||||
|
||||
// Central European (Latin2)
|
||||
{
|
||||
/* unix */ {wxFONTENCODING_ISO8859_2, STOP},
|
||||
/* windows */ {wxFONTENCODING_CP1250, 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 (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;
|
||||
|
||||
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;
|
||||
}
|
||||
Reference in New Issue
Block a user