// 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)
// ----------------------------------------------------------------------------
// there is not enough space for everything, including the trailing NUL
// 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 wxNO_LEN, the entire string, up to and
+ // In the special case when dst is NULL (the value of dstLen is ignored
+ // then) the return value is the length of the needed buffer but nothing
+ // happens 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:
//
// size_t dstLen = conv.ToWChar(NULL, 0, src);
- // if ( dstLen != wxCONV_FAILED )
+ // if ( dstLen == wxCONV_FAILED )
// ... handle error ...
// wchar_t *wbuf = new wchar_t[dstLen];
// conv.ToWChar(wbuf, dstLen, src);
+ // ... work with wbuf ...
+ // delete [] wbuf;
//
virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
const char *src, size_t srcLen = wxNO_LEN) const;
// Convenience functions for converting strings which may contain embedded
// NULs and don't have to be NUL-terminated.
//
- // inLen is the length of the buffer including trailing NUL if any: if the
- // last 4 bytes of the buffer are all NULs, these functions are more
- // efficient as they avoid copying the string, but otherwise a copy is made
- // internally which could be quite bad for (very) long strings.
+ // inLen is the length of the buffer including trailing NUL if any or
+ // wxNO_LEN if the input is NUL-terminated.
//
// outLen receives, if not NULL, the length of the converted string or 0 if
// the conversion failed (returning 0 and not -1 in this case makes it
// difficult to distinguish between failed conversion and empty input but
- // this is done for backwards compatibility)
+ // this is done for backwards compatibility). Notice that the rules for
+ // whether outLen accounts or not for the last NUL are the same as for
+ // To/FromWChar() above: if inLen is specified, outLen is exactly the
+ // number of characters converted, whether the last one of them was NUL or
+ // not. But if inLen == wxNO_LEN then outLen doesn't account for the last
+ // NUL even though it is present.
const wxWCharBuffer
cMB2WC(const char *in, size_t inLen, size_t *outLen) const;
const wxCharBuffer
cWC2MB(const wchar_t *in, size_t inLen, size_t *outLen) const;
+ // And yet more convenience functions for converting the entire buffers:
+ // these are the simplest and least error-prone as you never need to bother
+ // with lengths/sizes directly.
+ const wxWCharBuffer cMB2WC(const wxScopedCharBuffer& in) const;
+ const wxCharBuffer cWC2MB(const wxScopedWCharBuffer& in) const;
+
// convenience functions for converting MB or WC to/from wxWin default
#if wxUSE_UNICODE
const wxWCharBuffer cMB2WX(const char *psz) const { return cMB2WC(psz); }
// the conversion object we forward to
wxMBConv *m_conv;
- DECLARE_NO_ASSIGN_CLASS(wxConvBrokenFileNames)
+ wxDECLARE_NO_ASSIGN_CLASS(wxConvBrokenFileNames);
};
#endif // __UNIX__
// the current decoder state: this is only used by ToWChar() if srcLen
// parameter is not wxNO_LEN, when working on the entire NUL-terminated
// strings we neither update nor use the state
- class DecoderState : StateMode
+ class DecoderState : private StateMode
{
private:
// current state: this one is private as we want to enforce the use of
// encoder state is simpler as we always receive entire Unicode characters
// on input
- class EncoderState : StateMode
+ class EncoderState : private StateMode
{
private:
Mode mode;
void Clear();
- // return true if the conversion could be initilized successfully
+ // return true if the conversion could be initialized successfully
bool IsOk() const;
private:
wxMBConv *DoCreate() const;
// set the name (may be only called when m_name == NULL), makes copy of
- // charset string
+ // the charset string
void SetName(const char *charset);
+ // m_name may be NULL in which case m_encoding should be used
+ //
// note that we can't use wxString here because of compilation
// dependencies: we're included from wx/string.h
char *m_name;
+
+ // may be wxFONTENCODING_SYSTEM in which case m_name is used
+ //
+ // if m_name is NULL, then we should use the default system encoding
wxFontEncoding m_encoding;
// use CreateConvIfNeeded() before accessing m_convReal!
#define wxFNCONV(name) wxConvFileName->cWX2MB(name)
#define wxFNSTRINGCAST wxMBSTRINGCAST
#else
-#if defined( __WXOSX__ ) && wxMBFILES
+#if defined( __WXOSX_OR_COCOA__ ) && wxMBFILES
#define wxFNCONV(name) wxConvFileName->cWC2MB( wxConvLocal.cWX2WC(name) )
#else
#define wxFNCONV(name) name
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