///////////////////////////////////////////////////////////////////////////////
// Name: strconv.h
// Purpose: conversion routines for char sets any Unicode
-// Author: Robert Roebling, Ove Kaaven
+// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin
// Modified by:
// Created: 29/01/98
// RCS-ID: $Id$
-// Copyright: (c) 1998 Ove Kaaven, Robert Roebling, Vadim Zeitlin
+// Copyright: (c) 1998 Ove Kaaven, Robert Roebling
+// (c) 1998-2006 Vadim Zeitlin
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-#ifndef _WX_WXSTRCONVH__
-#define _WX_WXSTRCONVH__
+#ifndef _WX_STRCONV_H_
+#define _WX_STRCONV_H_
#include "wx/defs.h"
#include "wx/wxchar.h"
// the error value returned by wxMBConv methods
#define wxCONV_FAILED ((size_t)-1)
+// the default value for some length parameters meaning that the string is
+// NUL-terminated
+#define wxNO_LEN ((size_t)-1)
+
// ----------------------------------------------------------------------------
// wxMBConv (abstract base class for conversions)
// ----------------------------------------------------------------------------
+// When deriving a new class from wxMBConv you must reimplement ToWChar() and
+// FromWChar() methods which are not pure virtual only for historical reasons,
+// don't let the fact that the existing classes implement MB2WC/WC2MB() instead
+// confuse you.
+//
+// You also have to implement Clone() to allow copying the conversions
+// polymorphically.
+//
+// And you might need to override GetMBNulLen() as well.
class WXDLLIMPEXP_BASE wxMBConv
{
public:
// characters, not bytes) of the converted string including any trailing
// L'\0' or (possibly multiple) '\0'(s). If the conversion fails or if
// there is not enough space for everything, including the trailing NUL
- // character(s), in the output buffer, (size_t)-1 is returned.
+ // character(s), in the output buffer, wxCONV_FAILED is returned.
//
// In the special case when dstLen is 0 (outputBuf may be NULL then) the
// return value is the length of the needed buffer but nothing happens
- // otherwise. If srcLen is -1, the entire string, up to and including the
- // trailing NUL(s), is converted, otherwise exactly srcLen bytes are.
+ // otherwise. If srcLen is wxNO_LEN, the entire string, up to and
+ // including the trailing NUL(s), is converted, otherwise exactly srcLen
+ // bytes are.
//
// Typical usage:
//
// conv.ToWChar(wbuf, dstLen, src);
//
virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
- const char *src, size_t srcLen = -1) const;
+ const char *src, size_t srcLen = wxNO_LEN) const;
virtual size_t FromWChar(char *dst, size_t dstLen,
- const wchar_t *src, size_t srcLen = -1) const;
+ const wchar_t *src, size_t srcLen = wxNO_LEN) const;
// Convenience functions for translating NUL-terminated strings: returns
// Note that outLen is the length of the output buffer, not the length of
// the input (which is always supposed to be terminated by one or more
// NULs, as appropriate for the encoding)!
- virtual size_t MB2WC(wchar_t *out, const char *in, size_t outLen) const = 0;
- virtual size_t WC2MB(char *out, const wchar_t *in, size_t outLen) const = 0;
+ virtual size_t MB2WC(wchar_t *out, const char *in, size_t outLen) const;
+ virtual size_t WC2MB(char *out, const wchar_t *in, size_t outLen) const;
+ // make a heap-allocated copy of this object
+ virtual wxMBConv *Clone() const = 0;
+
// virtual dtor for any base class
virtual ~wxMBConv();
};
public:
virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
+
+ virtual wxMBConv *Clone() const { return new wxMBConvLibc; }
};
#ifdef __UNIX__
{
public:
wxConvBrokenFileNames(const wxChar *charset);
+ wxConvBrokenFileNames(const wxConvBrokenFileNames& conv)
+ : wxMBConv(),
+ m_conv(conv.m_conv ? conv.m_conv->Clone() : NULL)
+ {
+ }
virtual ~wxConvBrokenFileNames() { delete m_conv; }
virtual size_t MB2WC(wchar_t *out, const char *in, size_t outLen) const
return m_conv->GetMBNulLen();
}
+ virtual wxMBConv *Clone() const { return new wxConvBrokenFileNames(*this); }
+
private:
// the conversion object we forward to
wxMBConv *m_conv;
+
+ DECLARE_NO_ASSIGN_CLASS(wxConvBrokenFileNames)
};
#endif // __UNIX__
public:
virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
+
+ virtual wxMBConv *Clone() const { return new wxMBConvUTF7; }
};
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxMBConvUTF8 : public wxMBConv
{
public:
- enum {
+ enum
+ {
MAP_INVALID_UTF8_NOT = 0,
MAP_INVALID_UTF8_TO_PUA = 1,
MAP_INVALID_UTF8_TO_OCTAL = 2
virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
+ virtual wxMBConv *Clone() const { return new wxMBConvUTF8(m_options); }
+
private:
int m_options;
};
class WXDLLIMPEXP_BASE wxMBConvUTF16Base : public wxMBConv
{
public:
- virtual size_t GetMBNulLen() const { return 2; }
+ enum { BYTES_PER_CHAR = 2 };
+
+ virtual size_t GetMBNulLen() const { return BYTES_PER_CHAR; }
+
+protected:
+ // return the length of the buffer using srcLen if it's not wxNO_LEN and
+ // computing the length ourselves if it is; also checks that the length is
+ // even if specified as we need an entire number of UTF-16 characters and
+ // returns wxNO_LEN which indicates error if it is odd
+ static size_t GetLength(const char *src, size_t srcLen);
};
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxMBConvUTF16LE : public wxMBConvUTF16Base
{
public:
- virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
- virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
+ virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen = wxNO_LEN) const;
+ virtual size_t FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen = wxNO_LEN) const;
+ virtual wxMBConv *Clone() const { return new wxMBConvUTF16LE; }
};
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxMBConvUTF16BE : public wxMBConvUTF16Base
{
public:
- virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
- virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
+ virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen = wxNO_LEN) const;
+ virtual size_t FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen = wxNO_LEN) const;
+ virtual wxMBConv *Clone() const { return new wxMBConvUTF16BE; }
};
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxMBConvUTF32Base : public wxMBConv
{
public:
- virtual size_t GetMBNulLen() const { return 4; }
+ enum { BYTES_PER_CHAR = 4 };
+
+ virtual size_t GetMBNulLen() const { return BYTES_PER_CHAR; }
+
+protected:
+ // this is similar to wxMBConvUTF16Base method with the same name except
+ // that, of course, it verifies that length is divisible by 4 if given and
+ // not by 2
+ static size_t GetLength(const char *src, size_t srcLen);
};
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxMBConvUTF32LE : public wxMBConvUTF32Base
{
public:
- virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
- virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
+ virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen = wxNO_LEN) const;
+ virtual size_t FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen = wxNO_LEN) const;
+ virtual wxMBConv *Clone() const { return new wxMBConvUTF32LE; }
};
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxMBConvUTF32BE : public wxMBConvUTF32Base
{
public:
- virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
- virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
+ virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
+ const char *src, size_t srcLen = wxNO_LEN) const;
+ virtual size_t FromWChar(char *dst, size_t dstLen,
+ const wchar_t *src, size_t srcLen = wxNO_LEN) const;
+ virtual wxMBConv *Clone() const { return new wxMBConvUTF32BE; }
};
// ----------------------------------------------------------------------------
virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
virtual size_t GetMBNulLen() const;
+ virtual wxMBConv *Clone() const { return new wxCSConv(*this); }
- void Clear() ;
+ void Clear();
private:
// common part of all ctors
// default in a couple of places inside wx (initially same as wxConvLibc)
extern WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent;
-// ???
+// the conversion corresponding to the current locale
extern WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvLocal;
+// the conversion corresponding to the encoding of the standard UI elements
+//
+// by default this is the same as wxConvLocal but may be changed if the program
+// needs to use a fixed encoding
+extern WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvUI;
// ----------------------------------------------------------------------------
// endianness-dependent conversions
#define wxConvertMB2WX(s) (s)
#endif // Unicode/ANSI
-#endif
- // _WX_WXSTRCONVH__
+#endif // _WX_STRCONV_H_
projects / wxWidgets.git / blobdiff