bda3d86af9
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23935 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
286 lines
9.5 KiB
C++
286 lines
9.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: strconv.h
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// Purpose: conversion routines for char sets any Unicode
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// Author: Robert Roebling, Ove Kaaven
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// Modified by:
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// Created: 29/01/98
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// RCS-ID: $Id$
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// Copyright: (c) 1998 Ove Kaaven, Robert Roebling, Vadim Zeitlin
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_WXSTRCONVH__
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#define _WX_WXSTRCONVH__
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma interface "strconv.h"
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#endif
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#include "wx/defs.h"
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#include "wx/wxchar.h"
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#include "wx/buffer.h"
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#ifdef __DIGITALMARS__
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#include "typeinfo.h"
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#endif
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#if defined(__VISAGECPP__) && __IBMCPP__ >= 400
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# undef __BSEXCPT__
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#endif
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#include <stdlib.h>
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#if wxUSE_WCHAR_T
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// ----------------------------------------------------------------------------
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// wxMBConv (abstract base class for conversions)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConv
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{
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public:
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// the actual conversion takes place here
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//
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// note that n is the size of the output buffer, not the length of input
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// (which is always supposed to be NUL-terminated)
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const = 0;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const = 0;
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// MB <-> WC
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const wxWCharBuffer cMB2WC(const char *psz) const;
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const wxCharBuffer cWC2MB(const wchar_t *psz) const;
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// convenience functions for converting MB or WC to/from wxWin default
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#if wxUSE_UNICODE
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const wxWCharBuffer cMB2WX(const char *psz) const { return cMB2WC(psz); }
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const wxCharBuffer cWX2MB(const wchar_t *psz) const { return cWC2MB(psz); }
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const wchar_t* cWC2WX(const wchar_t *psz) const { return psz; }
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const wchar_t* cWX2WC(const wchar_t *psz) const { return psz; }
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#else // ANSI
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const char* cMB2WX(const char *psz) const { return psz; }
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const char* cWX2MB(const char *psz) const { return psz; }
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const wxCharBuffer cWC2WX(const wchar_t *psz) const { return cWC2MB(psz); }
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const wxWCharBuffer cWX2WC(const char *psz) const { return cMB2WC(psz); }
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#endif // Unicode/ANSI
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// virtual dtor for any base class
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virtual ~wxMBConv();
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};
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// ----------------------------------------------------------------------------
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// wxMBConvLibc uses standard mbstowcs() and wcstombs() functions for
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// conversion (hence it depends on the current locale)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConvLibc : public wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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// not very accurately named because it is not necessarily of type wxMBConvLibc
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// (but the name can't eb changed because of backwards compatibility) default
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// conversion
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WXDLLIMPEXP_DATA_BASE(extern wxMBConv&) wxConvLibc;
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// ----------------------------------------------------------------------------
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// wxMBConvUTF7 (for conversion using UTF7 encoding)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConvUTF7 : public wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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WXDLLIMPEXP_DATA_BASE(extern wxMBConvUTF7&) wxConvUTF7;
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// ----------------------------------------------------------------------------
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// wxMBConvUTF8 (for conversion using UTF8 encoding)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConvUTF8 : public wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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WXDLLIMPEXP_DATA_BASE(extern wxMBConvUTF8&) wxConvUTF8;
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// ----------------------------------------------------------------------------
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// wxMBConvUTF16LE (for conversion using UTF16 Little Endian encoding)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConvUTF16LE : public wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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// ----------------------------------------------------------------------------
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// wxMBConvUTF16BE (for conversion using UTF16 Big Endian encoding)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConvUTF16BE : public wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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// ----------------------------------------------------------------------------
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// wxMBConvUCS4LE (for conversion using UTF32 Little Endian encoding)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConvUTF32LE : public wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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// ----------------------------------------------------------------------------
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// wxMBConvUCS4BE (for conversion using UTF32 Big Endian encoding)
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConvUTF32BE : public wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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// ----------------------------------------------------------------------------
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// wxCSConv (for conversion based on loadable char sets)
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// ----------------------------------------------------------------------------
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#include "wx/fontenc.h"
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class WXDLLIMPEXP_BASE wxCSConv : public wxMBConv
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{
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public:
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// we can be created either from charset name or from an encoding constant
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// but we can't have both at once
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wxCSConv(const wxChar *charset);
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wxCSConv(wxFontEncoding encoding);
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wxCSConv(const wxCSConv& conv);
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virtual ~wxCSConv();
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wxCSConv& operator=(const wxCSConv& conv);
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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void Clear() ;
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private:
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// common part of all ctors
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void Init();
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// creates m_convReal if necessary
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void CreateConvIfNeeded() const;
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// do create m_convReal (unconditionally)
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wxMBConv *DoCreate() const;
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// set the name (may be only called when m_name == NULL), makes copy of
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// charset string
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void SetName(const wxChar *charset);
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// note that we can't use wxString here because of compilation
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// dependencies: we're included from wx/string.h
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wxChar *m_name;
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wxFontEncoding m_encoding;
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// use CreateConvIfNeeded() before accessing m_convReal!
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wxMBConv *m_convReal;
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bool m_deferred;
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};
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#define wxConvFile wxConvLocal
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WXDLLIMPEXP_DATA_BASE(extern wxCSConv&) wxConvLocal;
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WXDLLIMPEXP_DATA_BASE(extern wxCSConv&) wxConvISO8859_1;
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WXDLLIMPEXP_DATA_BASE(extern wxMBConv *) wxConvCurrent;
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// ----------------------------------------------------------------------------
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// endianness-dependent conversions
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// ----------------------------------------------------------------------------
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#ifdef WORDS_BIGENDIAN
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typedef wxMBConvUTF16BE wxMBConvUTF16;
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typedef wxMBConvUTF32BE wxMBConvUTF32;
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#else
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typedef wxMBConvUTF16LE wxMBConvUTF16;
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typedef wxMBConvUTF32LE wxMBConvUTF32;
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#endif
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// ----------------------------------------------------------------------------
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// filename conversion macros
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// ----------------------------------------------------------------------------
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// filenames are multibyte on Unix and probably widechar on Windows?
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#if defined(__UNIX__) || defined(__BORLANDC__) || defined(__WXMAC__ )
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#define wxMBFILES 1
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#else
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#define wxMBFILES 0
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#endif
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#if wxMBFILES && wxUSE_UNICODE
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#define wxFNCONV(name) wxConvFile.cWX2MB(name)
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#define wxFNSTRINGCAST wxMBSTRINGCAST
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#else
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#define wxFNCONV(name) name
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#define wxFNSTRINGCAST WXSTRINGCAST
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#endif
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#else
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// !wxUSE_WCHAR_T
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// ----------------------------------------------------------------------------
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// stand-ins in absence of wchar_t
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxMBConv
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{
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public:
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const char* cMB2WX(const char *psz) const { return psz; }
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const char* cWX2MB(const char *psz) const { return psz; }
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};
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#define wxConvFile wxConvLocal
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WXDLLIMPEXP_DATA_BASE(extern wxMBConv) wxConvLibc,
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wxConvLocal,
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wxConvISO8859_1,
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wxConvUTF8;
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WXDLLIMPEXP_DATA_BASE(extern wxMBConv *) wxConvCurrent;
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#define wxFNCONV(name) name
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#define wxFNSTRINGCAST WXSTRINGCAST
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#endif
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// wxUSE_WCHAR_T
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// ----------------------------------------------------------------------------
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// macros for the most common conversions
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// ----------------------------------------------------------------------------
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#if wxUSE_UNICODE
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#define wxConvertWX2MB(s) wxConvCurrent->cWX2MB(s)
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#define wxConvertMB2WX(s) wxConvCurrent->cMB2WX(s)
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#else // ANSI
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// no conversions to do
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#define wxConvertWX2MB(s) (s)
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#define wxConvertMB2WX(s) (s)
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#endif // Unicode/ANSI
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#endif
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// _WX_WXSTRCONVH__
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