include/wx/strconv.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        strconv.h
   3 // Purpose:     conversion routines for char sets any Unicode
   4 // Author:      Robert Roebling, Ove Kaaven
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Ove Kaaven, Robert Roebling, Vadim Zeitlin
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_WXSTRCONVH__
  13 #define _WX_WXSTRCONVH__
  14
  15 #if defined(__GNUG__) && !defined(__APPLE__)
  16   #pragma interface "strconv.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/wxchar.h"
  21 #include "wx/buffer.h"
  22
  23 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
  24 #  undef __BSEXCPT__
  25 #endif
  26
  27 #include <stdlib.h>
  28
  29 #if wxUSE_WCHAR_T
  30
  31 // ----------------------------------------------------------------------------
  32 // wxMBConv (base class for conversions, using libc conversion itself)
  33 // ----------------------------------------------------------------------------
  34
  35 class WXDLLEXPORT wxMBConv
  36 {
  37 public:
  38     // the actual conversion takes place here
  39     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  40     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  41
  42     // No longer inline since BC++ complains.
  43     const wxWCharBuffer cMB2WC(const char *psz) const;
  44     const wxCharBuffer cWC2MB(const wchar_t *psz) const;
  45
  46 #if wxUSE_UNICODE
  47     const wxWCharBuffer cMB2WX(const char *psz) const { return cMB2WC(psz); }
  48     const wxCharBuffer cWX2MB(const wchar_t *psz) const { return cWC2MB(psz); }
  49     const wchar_t* cWC2WX(const wchar_t *psz) const { return psz; }
  50     const wchar_t* cWX2WC(const wchar_t *psz) const { return psz; }
  51 #else // ANSI
  52     const char* cMB2WX(const char *psz) const { return psz; }
  53     const char* cWX2MB(const char *psz) const { return psz; }
  54     const wxCharBuffer cWC2WX(const wchar_t *psz) const { return cWC2MB(psz); }
  55     const wxWCharBuffer cWX2WC(const char *psz) const { return cMB2WC(psz); }
  56 #endif // Unicode/ANSI
  57
  58     // virtual dtor for any base class
  59     virtual ~wxMBConv();
  60 };
  61
  62 WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc;
  63
  64 // ----------------------------------------------------------------------------
  65 // wxMBConvUTF7 (for conversion using UTF7 encoding)
  66 // ----------------------------------------------------------------------------
  67
  68 class WXDLLEXPORT wxMBConvUTF7 : public wxMBConv
  69 {
  70 public:
  71     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  72     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  73 };
  74
  75 WXDLLEXPORT_DATA(extern wxMBConvUTF7) wxConvUTF7;
  76
  77 // ----------------------------------------------------------------------------
  78 // wxMBConvUTF8 (for conversion using UTF8 encoding)
  79 // ----------------------------------------------------------------------------
  80
  81 class WXDLLEXPORT wxMBConvUTF8 : public wxMBConv
  82 {
  83 public:
  84     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  85     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  86 };
  87
  88 WXDLLEXPORT_DATA(extern wxMBConvUTF8) wxConvUTF8;
  89
  90 #ifdef __WXGTK12__
  91
  92 // ----------------------------------------------------------------------------
  93 // wxMBConvUTF8 (for conversion using GDK's internal converions)
  94 // ----------------------------------------------------------------------------
  95
  96 class WXDLLEXPORT wxMBConvGdk : public wxMBConv
  97 {
  98 public:
  99     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 100     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 101 };
 102
 103 WXDLLEXPORT_DATA(extern wxMBConvGdk) wxConvGdk;
 104
 105 #endif // wxGTK 1.2
 106
 107 // ----------------------------------------------------------------------------
 108 // wxCSConv (for conversion based on loadable char sets)
 109 // ----------------------------------------------------------------------------
 110
 111 class WXDLLEXPORT wxCharacterSet;
 112
 113 class WXDLLEXPORT wxCSConv : public wxMBConv
 114 {
 115 public:
 116     wxCSConv(const wxChar *charset);
 117     wxCSConv(const wxCSConv& conv);
 118     virtual ~wxCSConv();
 119
 120     wxCSConv& operator=(const wxCSConv& conv);
 121
 122     void LoadNow();
 123
 124     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 125     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 126
 127     void Clear() ;
 128
 129 private:
 130     void SetName(const wxChar *charset);
 131
 132     // note that we can't use wxString here because of compilation
 133     // dependencies: we're included from wx/string.h
 134     wxChar *m_name;
 135     wxCharacterSet *m_cset;
 136     bool m_deferred;
 137 };
 138
 139 #define wxConvFile wxConvLocal
 140 WXDLLEXPORT_DATA(extern wxCSConv) wxConvLocal;
 141 WXDLLEXPORT_DATA(extern wxCSConv) wxConvISO8859_1;
 142 WXDLLEXPORT_DATA(extern wxMBConv *) wxConvCurrent;
 143
 144 // ----------------------------------------------------------------------------
 145 // filename conversion macros
 146 // ----------------------------------------------------------------------------
 147
 148 // filenames are multibyte on Unix and probably widechar on Windows?
 149 #if defined(__UNIX__) || defined(__BORLANDC__)
 150     #define wxMBFILES 1
 151 #else
 152     #define wxMBFILES 0
 153 #endif
 154
 155 #if wxMBFILES && wxUSE_UNICODE
 156     #define wxFNCONV(name) wxConvFile.cWX2MB(name)
 157     #define wxFNSTRINGCAST wxMBSTRINGCAST
 158 #else
 159     #define wxFNCONV(name) name
 160     #define wxFNSTRINGCAST WXSTRINGCAST
 161 #endif
 162
 163 #else
 164   // !wxUSE_WCHAR_T
 165
 166 // ----------------------------------------------------------------------------
 167 // stand-ins in absence of wchar_t
 168 // ----------------------------------------------------------------------------
 169
 170 class WXDLLEXPORT wxMBConv
 171 {
 172 public:
 173     const char* cMB2WX(const char *psz) const { return psz; }
 174     const char* cWX2MB(const char *psz) const { return psz; }
 175 };
 176
 177 WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc, wxConvFile, wxConvLocal, wxConvISO8859_1;
 178 WXDLLEXPORT_DATA(extern wxMBConv *) wxConvCurrent;
 179
 180 #define wxFNCONV(name) name
 181 #define wxFNSTRINGCAST WXSTRINGCAST
 182
 183 #endif
 184   // wxUSE_WCHAR_T
 185
 186 // ----------------------------------------------------------------------------
 187 // macros for the most common conversions
 188 // ----------------------------------------------------------------------------
 189
 190 #if wxUSE_UNICODE
 191     #define wxConvertWX2MB(s)   wxConvCurrent->cWX2MB(s)
 192     #define wxConvertMB2WX(s)   wxConvCurrent->cMB2WX(s)
 193 #else // ANSI
 194     // no conversions to do
 195     #define wxConvertWX2MB(s)   (s)
 196     #define wxConvertMB2WX(s)   (s)
 197 #endif // Unicode/ANSI
 198
 199 #endif
 200   // _WX_WXSTRCONVH__
 201