505 lines
14 KiB
C++
505 lines
14 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/encconv.cpp
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// Purpose: wxEncodingConverter class for converting between different
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// font encodings
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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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// 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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#include <stdlib.h>
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// conversion tables, generated by scripts in $(WXWIN)/misc/unictabl:
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#if defined(__DARWIN__)
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#include "../common/unictabl.inc"
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#else
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#include "unictabl.inc"
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#endif
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#ifdef __WXMAC__
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#include "wx/osx/core/cfstring.h"
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#include <CoreFoundation/CFString.h>
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#include <CoreFoundation/CFStringEncodingExt.h>
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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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#endif
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static const wxUint16* GetEncTable(wxFontEncoding enc)
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{
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#ifdef __WXMAC__
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if( enc >= wxFONTENCODING_MACMIN && enc <= wxFONTENCODING_MACMAX )
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{
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int i = enc-wxFONTENCODING_MACMIN ;
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if ( gMacEncodingsInited[i] == false )
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{
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// create
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CFStringEncoding cfencoding = wxMacGetSystemEncFromFontEnc( enc ) ;
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if( !CFStringIsEncodingAvailable( cfencoding ) )
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return NULL;
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memset( gMacEncodings[i] , 0 , 128 * 2 );
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char s[2] = { 0 , 0 };
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CFRange firstchar = CFRangeMake( 0, 1 );
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for( unsigned char c = 255 ; c >= 128 ; --c )
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{
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s[0] = c ;
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wxCFStringRef cfref( CFStringCreateWithCStringNoCopy( NULL, s, cfencoding , kCFAllocatorNull ) );
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CFStringGetCharacters( cfref, firstchar, (UniChar*) &gMacEncodings[i][c-128] );
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}
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gMacEncodingsInited[i]=true;
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}
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return gMacEncodings[i] ;
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}
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#endif
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for (int i = 0; encodings_list[i].table != NULL; i++)
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{
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if (encodings_list[i].encoding == enc)
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return encodings_list[i].table;
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}
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return NULL;
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}
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typedef struct {
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wxUint16 u;
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wxUint8 c;
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} CharsetItem;
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extern "C"
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{
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static int wxCMPFUNC_CONV
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CompareCharsetItems(const void *i1, const void *i2)
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{
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return static_cast<const CharsetItem*>(i1)->u - static_cast<const CharsetItem*>(i2)->u;
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}
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}
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static CharsetItem* BuildReverseTable(const wxUint16 *tbl)
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{
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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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return rev;
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}
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wxEncodingConverter::wxEncodingConverter()
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{
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m_Table = NULL;
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m_UnicodeInput = m_UnicodeOutput = false;
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m_JustCopy = false;
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}
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bool wxEncodingConverter::Init(wxFontEncoding input_enc, wxFontEncoding output_enc, int method)
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{
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unsigned i;
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const wxUint16 *in_tbl;
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const wxUint16 *out_tbl = NULL;
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wxDELETEA(m_Table);
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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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m_JustCopy = false;
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if (input_enc == wxFONTENCODING_UNICODE)
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{
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if ((out_tbl = GetEncTable(output_enc)) == NULL) return false;
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m_Table = new wchar_t[65536];
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for (i = 0; i < 128; i++) m_Table[i] = (wchar_t)i; // 7bit ASCII
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for (i = 128; i < 65536; i++) m_Table[i] = (wchar_t)0;
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if (method == wxCONVERT_SUBSTITUTE)
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{
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for (i = 0; i < encoding_unicode_fallback_count; i++)
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m_Table[encoding_unicode_fallback[i].c] = (wchar_t) encoding_unicode_fallback[i].s;
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}
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for (i = 0; i < 128; i++)
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m_Table[out_tbl[i]] = (wchar_t)(128 + i);
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m_UnicodeInput = true;
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}
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else // input !Unicode
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{
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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 wchar_t[256];
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for (i = 0; i < 128; i++) m_Table[i] = (wchar_t)i; // 7bit ASCII
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if (output_enc == wxFONTENCODING_UNICODE)
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{
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for (i = 0; i < 128; i++) m_Table[128 + i] = (wchar_t)in_tbl[i];
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return true;
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}
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else // output !Unicode
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{
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CharsetItem *rev = BuildReverseTable(out_tbl);
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CharsetItem key;
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for (i = 0; i < 128; i++)
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{
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key.u = in_tbl[i];
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CharsetItem* item;
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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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if (item)
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m_Table[128 + i] = (wchar_t)item -> c;
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else
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m_Table[128 + i] = (wchar_t)(128 + i);
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}
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delete[] rev;
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}
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}
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return true;
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}
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#define REPLACEMENT_CHAR (L'?')
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inline wchar_t GetTableValue(const wchar_t *table, wchar_t value, bool& repl)
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{
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wchar_t r = table[value];
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if (r == 0 && value != 0)
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{
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r = REPLACEMENT_CHAR;
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repl = true;
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}
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return r;
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}
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bool wxEncodingConverter::Convert(const char* input, char* output) const
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{
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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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const char *i;
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char *o;
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if (m_JustCopy)
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{
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strcpy(output, input);
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return true;
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}
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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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*o = 0;
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return !replaced;
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}
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bool wxEncodingConverter::Convert(const char* input, wchar_t* output) const
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{
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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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const char *i;
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wchar_t *o;
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if (m_JustCopy)
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{
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for (i = input, o = output; *i != 0;)
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*(o++) = (wchar_t)(*(i++));
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*o = 0;
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return true;
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}
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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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*o = 0;
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return !replaced;
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}
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bool wxEncodingConverter::Convert(const wchar_t* input, char* output) const
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{
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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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const wchar_t *i;
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char *o;
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if (m_JustCopy)
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{
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for (i = input, o = output; *i != 0;)
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*(o++) = (char)(*(i++));
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*o = 0;
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return true;
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}
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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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*o = 0;
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return !replaced;
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}
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bool wxEncodingConverter::Convert(const wchar_t* input, wchar_t* output) const
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{
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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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const wchar_t *i;
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wchar_t *o;
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if (m_JustCopy)
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{
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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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*(o++) = (*(i++));
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*o = 0;
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return true;
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}
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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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*o = 0;
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return !replaced;
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}
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wxString wxEncodingConverter::Convert(const wxString& input) const
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{
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if (m_JustCopy) return input;
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wxString s;
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const wxChar *i;
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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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if (m_UnicodeInput)
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{
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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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}
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else
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{
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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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}
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return s;
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}
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// Following tables describe classes of encoding equivalence.
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//
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#define STOP wxFONTENCODING_SYSTEM
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#define NUM_OF_PLATFORMS 3 /*must conform to enum wxPLATFORM_XXXX !!!*/
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#define ENC_PER_PLATFORM 3
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// max no. of encodings for one language used on one platform.
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// Using maximum of everything at the current moment to not make the
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// library larger than necessary. Make larger only if necessary - MR
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static const 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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// Western European
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{
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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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},
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// Central European
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{
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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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},
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// Baltic
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{
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/* unix */ {wxFONTENCODING_ISO8859_13, wxFONTENCODING_ISO8859_4, STOP},
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/* windows */ {wxFONTENCODING_CP1257, STOP},
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/* mac */ {STOP}
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},
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// Hebrew
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{
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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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},
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// Greek
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{
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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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},
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// Arabic
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{
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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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},
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// Turkish
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{
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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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},
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// Cyrillic
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{
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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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},
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{{STOP},{STOP},{STOP}} /* Terminator */
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/* no, _not_ Arnold! */
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};
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static bool FindEncoding(const wxFontEncodingArray& arr, wxFontEncoding f)
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{
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for (wxFontEncodingArray::const_iterator it = arr.begin(), en = arr.end();
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it != en; ++it)
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if (*it == f)
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return true;
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return false;
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}
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wxFontEncodingArray wxEncodingConverter::GetPlatformEquivalents(wxFontEncoding enc, int platform)
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{
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if (platform == wxPLATFORM_CURRENT)
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{
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#if defined(__WINDOWS__)
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platform = wxPLATFORM_WINDOWS;
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#elif defined(__WXMAC__)
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platform = wxPLATFORM_MAC;
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#else
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platform = wxPLATFORM_UNIX;
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#endif
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}
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switch ( platform )
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{
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case wxPLATFORM_UNIX:
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case wxPLATFORM_WINDOWS:
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case wxPLATFORM_MAC:
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break;
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default:
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wxFAIL_MSG(wxS("Invalid platform specified"));
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return wxFontEncodingArray();
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}
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int i, clas, e ;
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const wxFontEncoding *f;
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wxFontEncodingArray arr;
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clas = 0;
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while (EquivalentEncodings[clas][0][0] != STOP)
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{
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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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{
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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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}
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clas++;
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}
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return arr;
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}
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wxFontEncodingArray wxEncodingConverter::GetAllEquivalents(wxFontEncoding enc)
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{
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int i, clas, e, j ;
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const wxFontEncoding *f;
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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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clas = 0;
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while (EquivalentEncodings[clas][0][0] != STOP)
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{
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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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{
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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;
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}
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clas++;
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}
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return arr;
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}
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