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 #ifdef __GNUG__
  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 // wxMBConvFile (for conversion to filenames)
  63 // ----------------------------------------------------------------------------
  64
  65 class WXDLLEXPORT wxMBConvFile : 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 wxMBConvFile) wxConvFile;
  73
  74 // ----------------------------------------------------------------------------
  75 // wxMBConvUTF7 (for conversion using UTF7 encoding)
  76 // ----------------------------------------------------------------------------
  77
  78 class WXDLLEXPORT wxMBConvUTF7 : 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 wxMBConvUTF7) wxConvUTF7;
  86
  87 // ----------------------------------------------------------------------------
  88 // wxMBConvUTF8 (for conversion using UTF8 encoding)
  89 // ----------------------------------------------------------------------------
  90
  91 class WXDLLEXPORT wxMBConvUTF8 : public wxMBConv
  92 {
  93 public:
  94     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  95     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  96 };
  97
  98 WXDLLEXPORT_DATA(extern wxMBConvUTF8) wxConvUTF8;
  99
 100 #ifdef __WXGTK12__
 101
 102 // ----------------------------------------------------------------------------
 103 // wxMBConvUTF8 (for conversion using GDK's internal converions)
 104 // ----------------------------------------------------------------------------
 105
 106 class WXDLLEXPORT wxMBConvGdk : public wxMBConv
 107 {
 108 public:
 109     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 110     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 111 };
 112
 113 WXDLLEXPORT_DATA(extern wxMBConvGdk) wxConvGdk;
 114
 115 #endif // wxGTK 1.2
 116
 117 // ----------------------------------------------------------------------------
 118 // wxCSConv (for conversion based on loadable char sets)
 119 // ----------------------------------------------------------------------------
 120
 121 class WXDLLEXPORT wxCharacterSet;
 122
 123 class WXDLLEXPORT wxCSConv : public wxMBConv
 124 {
 125 public:
 126     wxCSConv(const wxChar *charset);
 127     virtual ~wxCSConv();
 128
 129     void LoadNow();
 130
 131     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 132     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 133
 134     void Clear() ;
 135
 136 private:
 137     void SetName(const wxChar *charset);
 138
 139     // note that we can't use wxString here because of compilation
 140     // dependencies: we're included from wx/string.h
 141     wxChar *m_name;
 142     wxCharacterSet *m_cset;
 143     bool m_deferred;
 144 };
 145
 146 WXDLLEXPORT_DATA(extern wxCSConv) wxConvLocal;
 147 WXDLLEXPORT_DATA(extern wxMBConv *) wxConvCurrent;
 148
 149 // ----------------------------------------------------------------------------
 150 // filename conversion macros
 151 // ----------------------------------------------------------------------------
 152
 153 // filenames are multibyte on Unix and probably widechar on Windows?
 154 #if defined(__UNIX__) || defined(__BORLANDC__)
 155     #define wxMBFILES 1
 156 #else
 157     #define wxMBFILES 0
 158 #endif
 159
 160 #if wxMBFILES && wxUSE_UNICODE
 161     #define wxFNCONV(name) wxConvFile.cWX2MB(name)
 162     #define wxFNSTRINGCAST wxMBSTRINGCAST
 163 #else
 164     #define wxFNCONV(name) name
 165     #define wxFNSTRINGCAST WXSTRINGCAST
 166 #endif
 167
 168 #else
 169   // !wxUSE_WCHAR_T
 170
 171 // ----------------------------------------------------------------------------
 172 // stand-ins in absence of wchar_t
 173 // ----------------------------------------------------------------------------
 174
 175 class WXDLLEXPORT wxMBConv
 176 {
 177 public:
 178     const char* cMB2WX(const char *psz) const { return psz; }
 179     const char* cWX2MB(const char *psz) const { return psz; }
 180 };
 181
 182 WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc, wxConvFile;
 183 WXDLLEXPORT_DATA(extern wxMBConv *) wxConvCurrent;
 184
 185 #define wxFNCONV(name) name
 186 #define wxFNSTRINGCAST WXSTRINGCAST
 187
 188 #endif
 189   // wxUSE_WCHAR_T
 190
 191 // ----------------------------------------------------------------------------
 192 // macros for the most common conversions
 193 // ----------------------------------------------------------------------------
 194
 195 #if wxUSE_UNICODE
 196     #define wxConvertWX2MB(s)   wxConvCurrent->cWX2MB(s)
 197     #define wxConvertMB2WX(s)   wxConvCurrent->cMB2WX(s)
 198 #else // ANSI
 199     // no conversions to do
 200     #define wxConvertWX2MB(s)   (s)
 201     #define wxConvertMB2WX(s)   (s)
 202 #endif // Unicode/ANSI
 203
 204 #endif
 205   // _WX_WXSTRCONVH__
 206