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
  59 WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc;
  60
  61 // ----------------------------------------------------------------------------
  62 // wxMBConvUTF7 (for conversion using UTF7 encoding)
  63 // ----------------------------------------------------------------------------
  64
  65 class WXDLLEXPORT wxMBConvUTF7 : public wxMBConv
  66 {
  67 public:
  68     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  69     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  70 };
  71
  72 WXDLLEXPORT_DATA(extern wxMBConvUTF7) wxConvUTF7;
  73
  74 // ----------------------------------------------------------------------------
  75 // wxMBConvUTF8 (for conversion using UTF8 encoding)
  76 // ----------------------------------------------------------------------------
  77
  78 class WXDLLEXPORT wxMBConvUTF8 : public wxMBConv
  79 {
  80 public:
  81     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  82     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  83 };
  84
  85 WXDLLEXPORT_DATA(extern wxMBConvUTF8) wxConvUTF8;
  86
  87 #ifdef __WXGTK12__
  88
  89 // ----------------------------------------------------------------------------
  90 // wxMBConvUTF8 (for conversion using GDK's internal converions)
  91 // ----------------------------------------------------------------------------
  92
  93 class WXDLLEXPORT wxMBConvGdk : public wxMBConv
  94 {
  95 public:
  96     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  97     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  98 };
  99
 100 WXDLLEXPORT_DATA(extern wxMBConvGdk) wxConvGdk;
 101
 102 #endif // wxGTK 1.2
 103
 104 // ----------------------------------------------------------------------------
 105 // wxCSConv (for conversion based on loadable char sets)
 106 // ----------------------------------------------------------------------------
 107
 108 class WXDLLEXPORT wxCharacterSet;
 109
 110 class WXDLLEXPORT wxCSConv : public wxMBConv
 111 {
 112 public:
 113     wxCSConv(const wxChar *charset);
 114     wxCSConv(const wxCSConv& conv);
 115     virtual ~wxCSConv();
 116
 117     wxCSConv& operator=(const wxCSConv& conv);
 118
 119     void LoadNow();
 120
 121     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 122     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 123
 124     void Clear() ;
 125
 126 private:
 127     void SetName(const wxChar *charset);
 128
 129     // note that we can't use wxString here because of compilation
 130     // dependencies: we're included from wx/string.h
 131     wxChar *m_name;
 132     wxCharacterSet *m_cset;
 133     bool m_deferred;
 134 };
 135
 136 #define wxConvFile wxConvLocal
 137 WXDLLEXPORT_DATA(extern wxCSConv) wxConvLocal;
 138 WXDLLEXPORT_DATA(extern wxMBConv *) wxConvCurrent;
 139
 140 // ----------------------------------------------------------------------------
 141 // filename conversion macros
 142 // ----------------------------------------------------------------------------
 143
 144 // filenames are multibyte on Unix and probably widechar on Windows?
 145 #if defined(__UNIX__) || defined(__BORLANDC__)
 146     #define wxMBFILES 1
 147 #else
 148     #define wxMBFILES 0
 149 #endif
 150
 151 #if wxMBFILES && wxUSE_UNICODE
 152     #define wxFNCONV(name) wxConvFile.cWX2MB(name)
 153     #define wxFNSTRINGCAST wxMBSTRINGCAST
 154 #else
 155     #define wxFNCONV(name) name
 156     #define wxFNSTRINGCAST WXSTRINGCAST
 157 #endif
 158
 159 #else
 160   // !wxUSE_WCHAR_T
 161
 162 // ----------------------------------------------------------------------------
 163 // stand-ins in absence of wchar_t
 164 // ----------------------------------------------------------------------------
 165
 166 class WXDLLEXPORT wxMBConv
 167 {
 168 public:
 169     const char* cMB2WX(const char *psz) const { return psz; }
 170     const char* cWX2MB(const char *psz) const { return psz; }
 171 };
 172
 173 WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc, wxConvFile;
 174 WXDLLEXPORT_DATA(extern wxMBConv *) wxConvCurrent;
 175
 176 #define wxFNCONV(name) name
 177 #define wxFNSTRINGCAST WXSTRINGCAST
 178
 179 #endif
 180   // wxUSE_WCHAR_T
 181
 182 // ----------------------------------------------------------------------------
 183 // macros for the most common conversions
 184 // ----------------------------------------------------------------------------
 185
 186 #if wxUSE_UNICODE
 187     #define wxConvertWX2MB(s)   wxConvCurrent->cWX2MB(s)
 188     #define wxConvertMB2WX(s)   wxConvCurrent->cMB2WX(s)
 189 #else // ANSI
 190     // no conversions to do
 191     #define wxConvertWX2MB(s)   (s)
 192     #define wxConvertMB2WX(s)   (s)
 193 #endif // Unicode/ANSI
 194
 195 #endif
 196   // _WX_WXSTRCONVH__
 197