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 licence
  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 #ifdef __DIGITALMARS__
  24 #include "typeinfo.h"
  25 #endif
  26
  27 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
  28 #  undef __BSEXCPT__
  29 #endif
  30
  31 #include <stdlib.h>
  32
  33 #if wxUSE_WCHAR_T
  34
  35 // ----------------------------------------------------------------------------
  36 // wxMBConv (base class for conversions, using libc conversion itself)
  37 // ----------------------------------------------------------------------------
  38
  39 class WXDLLIMPEXP_BASE wxMBConv
  40 {
  41 public:
  42     // the actual conversion takes place here
  43     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  44     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  45
  46     // No longer inline since BC++ complains.
  47     const wxWCharBuffer cMB2WC(const char *psz) const;
  48     const wxCharBuffer cWC2MB(const wchar_t *psz) const;
  49
  50 #if wxUSE_UNICODE
  51     const wxWCharBuffer cMB2WX(const char *psz) const { return cMB2WC(psz); }
  52     const wxCharBuffer cWX2MB(const wchar_t *psz) const { return cWC2MB(psz); }
  53     const wchar_t* cWC2WX(const wchar_t *psz) const { return psz; }
  54     const wchar_t* cWX2WC(const wchar_t *psz) const { return psz; }
  55 #else // ANSI
  56     const char* cMB2WX(const char *psz) const { return psz; }
  57     const char* cWX2MB(const char *psz) const { return psz; }
  58     const wxCharBuffer cWC2WX(const wchar_t *psz) const { return cWC2MB(psz); }
  59     const wxWCharBuffer cWX2WC(const char *psz) const { return cMB2WC(psz); }
  60 #endif // Unicode/ANSI
  61
  62     // virtual dtor for any base class
  63     virtual ~wxMBConv();
  64 };
  65
  66 WXDLLIMPEXP_DATA_BASE(extern wxMBConv) wxConvLibc;
  67
  68 // ----------------------------------------------------------------------------
  69 // wxMBConvUTF7 (for conversion using UTF7 encoding)
  70 // ----------------------------------------------------------------------------
  71
  72 class WXDLLIMPEXP_BASE wxMBConvUTF7 : public wxMBConv
  73 {
  74 public:
  75     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  76     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  77 };
  78
  79 WXDLLIMPEXP_DATA_BASE(extern wxMBConvUTF7) wxConvUTF7;
  80
  81 // ----------------------------------------------------------------------------
  82 // wxMBConvUTF8 (for conversion using UTF8 encoding)
  83 // ----------------------------------------------------------------------------
  84
  85 class WXDLLIMPEXP_BASE wxMBConvUTF8 : public wxMBConv
  86 {
  87 public:
  88     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
  89     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
  90 };
  91
  92 WXDLLIMPEXP_DATA_BASE(extern wxMBConvUTF8) wxConvUTF8;
  93
  94 // ----------------------------------------------------------------------------
  95 // wxCSConv (for conversion based on loadable char sets)
  96 // ----------------------------------------------------------------------------
  97
  98 class WXDLLIMPEXP_BASE wxCharacterSet;
  99
 100 class WXDLLIMPEXP_BASE wxCSConv : public wxMBConv
 101 {
 102 public:
 103     wxCSConv(const wxChar *charset);
 104     wxCSConv(const wxCSConv& conv);
 105     virtual ~wxCSConv();
 106
 107     wxCSConv& operator=(const wxCSConv& conv);
 108
 109     void LoadNow();
 110
 111     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 112     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 113
 114     void Clear() ;
 115
 116 private:
 117     void SetName(const wxChar *charset);
 118
 119     // note that we can't use wxString here because of compilation
 120     // dependencies: we're included from wx/string.h
 121     wxChar *m_name;
 122     wxCharacterSet *m_cset;
 123     bool m_deferred;
 124 };
 125
 126 #define wxConvFile wxConvLocal
 127 WXDLLIMPEXP_DATA_BASE(extern wxCSConv) wxConvLocal;
 128 WXDLLIMPEXP_DATA_BASE(extern wxCSConv) wxConvISO8859_1;
 129 WXDLLIMPEXP_DATA_BASE(extern wxMBConv *) wxConvCurrent;
 130
 131 // ----------------------------------------------------------------------------
 132 // filename conversion macros
 133 // ----------------------------------------------------------------------------
 134
 135 // filenames are multibyte on Unix and probably widechar on Windows?
 136 #if defined(__UNIX__) || defined(__BORLANDC__) || defined(__WXMAC__ )
 137     #define wxMBFILES 1
 138 #else
 139     #define wxMBFILES 0
 140 #endif
 141
 142 #if wxMBFILES && wxUSE_UNICODE
 143     #define wxFNCONV(name) wxConvFile.cWX2MB(name)
 144     #define wxFNSTRINGCAST wxMBSTRINGCAST
 145 #else
 146     #define wxFNCONV(name) name
 147     #define wxFNSTRINGCAST WXSTRINGCAST
 148 #endif
 149
 150 #else
 151   // !wxUSE_WCHAR_T
 152
 153 // ----------------------------------------------------------------------------
 154 // stand-ins in absence of wchar_t
 155 // ----------------------------------------------------------------------------
 156
 157 class WXDLLIMPEXP_BASE wxMBConv
 158 {
 159 public:
 160     const char* cMB2WX(const char *psz) const { return psz; }
 161     const char* cWX2MB(const char *psz) const { return psz; }
 162 };
 163
 164 WXDLLIMPEXP_DATA_BASE(extern wxMBConv) wxConvLibc, wxConvFile, wxConvLocal, wxConvISO8859_1, wxConvUTF8;
 165 WXDLLIMPEXP_DATA_BASE(extern wxMBConv *) wxConvCurrent;
 166
 167 #define wxFNCONV(name) name
 168 #define wxFNSTRINGCAST WXSTRINGCAST
 169
 170 #endif
 171   // wxUSE_WCHAR_T
 172
 173 // ----------------------------------------------------------------------------
 174 // macros for the most common conversions
 175 // ----------------------------------------------------------------------------
 176
 177 #if wxUSE_UNICODE
 178     #define wxConvertWX2MB(s)   wxConvCurrent->cWX2MB(s)
 179     #define wxConvertMB2WX(s)   wxConvCurrent->cMB2WX(s)
 180 #else // ANSI
 181     // no conversions to do
 182     #define wxConvertWX2MB(s)   (s)
 183     #define wxConvertMB2WX(s)   (s)
 184 #endif // Unicode/ANSI
 185
 186 #endif
 187   // _WX_WXSTRCONVH__
 188