don't attempt to convert 8bit values to Unicode in ANSI build

[wxWidgets.git] / include / wx / strvararg.h

diff --git a/include/wx/strvararg.h b/include/wx/strvararg.h
index 9af6ace517a6fd866841086af9dc8f7f73dd6ee6..2e6f3033a4294af695076c96880d15aa9decbd86 100644 (file)
--- a/include/wx/strvararg.h
+++ b/include/wx/strvararg.h
@@ -18,12 +18,12 @@
 
 #include "wx/cpp.h"
 #include "wx/chartype.h"
 
 #include "wx/cpp.h"
 #include "wx/chartype.h"

-#include "wx/wxcrt.h"

 #include "wx/strconv.h"
 #include "wx/buffer.h"
 #include "wx/strconv.h"
 #include "wx/buffer.h"

+#include "wx/unichar.h"

 
 

-class WXDLLIMPEXP_BASE wxCStrData;
-class WXDLLIMPEXP_BASE wxString;
+class WXDLLIMPEXP_FWD_BASE wxCStrData;
+class WXDLLIMPEXP_FWD_BASE wxString;

 
 // ----------------------------------------------------------------------------
 // WX_DEFINE_VARARG_FUNC* macros
 
 // ----------------------------------------------------------------------------
 // WX_DEFINE_VARARG_FUNC* macros


@@ -47,6 +47,9 @@ class WXDLLIMPEXP_BASE wxString;
 //   * wchar_t* if wxUSE_UNICODE_WCHAR or if wxUSE_UNICODE_UTF8 and the current
 //     locale is not UTF-8
 //
 //   * wchar_t* if wxUSE_UNICODE_WCHAR or if wxUSE_UNICODE_UTF8 and the current
 //     locale is not UTF-8
 //

+// Note that wxFormatString *must* be used for the format parameter of these
+// functions, otherwise the implementation won't work correctly.
+//

 // Parameters:
 // [ there are examples in square brackets showing values of the parameters
 //   for the wxFprintf() wrapper for fprintf() function with the following
 // Parameters:
 // [ there are examples in square brackets showing values of the parameters
 //   for the wxFprintf() wrapper for fprintf() function with the following


@@ -106,6 +109,79 @@ class WXDLLIMPEXP_BASE wxString;
                     _WX_VARARG_DEFINE_FUNC_CTOR,                              \
                     void, name, impl, implUtf8, numfixed, fixed)
 
                     _WX_VARARG_DEFINE_FUNC_CTOR,                              \
                     void, name, impl, implUtf8, numfixed, fixed)
 

+
+// ----------------------------------------------------------------------------
+// wxFormatString
+// ----------------------------------------------------------------------------
+
+// This class must be used for format string argument of the functions
+// defined using WX_DEFINE_VARARG_FUNC_* macros. It converts the string to
+// char* or wchar_t* for passing to implementation function efficiently (i.e.
+// without keeping the converted string in memory for longer than necessary,
+// like c_str()). It also converts format string to the correct form that
+// accounts for string changes done by wxArgNormalizer<>
+//
+// Note that this class can _only_ be used for function arguments!
+class WXDLLIMPEXP_BASE wxFormatString
+{
+public:
+    wxFormatString(const char *str)
+        : m_char(wxCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
+    wxFormatString(const wchar_t *str)
+        : m_wchar(wxWCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
+    wxFormatString(const wxString& str)
+        : m_str(&str), m_cstr(NULL) {}
+    wxFormatString(const wxCStrData& str)
+        : m_str(NULL), m_cstr(&str) {}
+    wxFormatString(const wxCharBuffer& str)
+        : m_char(str), m_str(NULL), m_cstr(NULL)  {}
+    wxFormatString(const wxWCharBuffer& str)
+        : m_wchar(str), m_str(NULL), m_cstr(NULL) {}
+
+#if !wxUSE_UNICODE_WCHAR
+    operator const char*() const
+        { return wx_const_cast(wxFormatString*, this)->AsChar(); }
+private:
+    // InputAsChar() returns the value converted passed to ctor, only converted
+    // to char, while AsChar() takes the the string returned by InputAsChar()
+    // and does format string conversion on it as well (and similarly for
+    // ..AsWChar() below)
+    const char* InputAsChar();
+    const char* AsChar();
+    wxCharBuffer m_convertedChar;
+#endif // !wxUSE_UNICODE_WCHAR
+
+#if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
+public:
+    operator const wchar_t*() const
+        { return wx_const_cast(wxFormatString*, this)->AsWChar(); }
+private:
+    const wchar_t* InputAsWChar();
+    const wchar_t* AsWChar();
+    wxWCharBuffer m_convertedWChar;
+#endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
+
+private:
+#ifdef __VISUALC__
+    // "struct 'ConvertedBuffer<T>' needs to have dll-interface to be used by
+    // clients of class 'wxString'" - this is private, we don't care
+    #pragma warning (disable:4251)
+#endif
+    wxCharBuffer  m_char;
+    wxWCharBuffer m_wchar;
+#ifdef __VISUALC__
+    #pragma warning (default:4251)
+#endif
+
+    // NB: we can use a pointer here, because wxFormatString is only used
+    //     as function argument, so it has shorter life than the string
+    //     passed to the ctor
+    const wxString * const m_str;
+    const wxCStrData * const m_cstr;
+
+    DECLARE_NO_COPY_CLASS(wxFormatString)
+};
+

 // ----------------------------------------------------------------------------
 // wxArgNormalizer*<T> converters
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxArgNormalizer*<T> converters
 // ----------------------------------------------------------------------------


@@ -364,6 +440,45 @@ WX_ARG_NORMALIZER_FORWARD(wxStdWideString, const wxStdWideString&);
 #endif // wxUSE_STD_STRING
 
 
 #endif // wxUSE_STD_STRING
 
 

+// versions for wxUniChar, wxUniCharRef:
+
+#if !wxUSE_UTF8_LOCALE_ONLY
+template<>
+struct wxArgNormalizerWchar<const wxUniChar&>
+{
+    wxArgNormalizerWchar(const wxUniChar& s) : m_value(s) {}
+
+    // FIXME-UTF8: use wchar_t once ANSI build is removed
+    wxChar get() const { return m_value; }
+
+    wxChar m_value;
+};
+#endif // !wxUSE_UTF8_LOCALE_ONLY
+
+#if wxUSE_UNICODE_UTF8
+template<>
+struct wxArgNormalizerUtf8<const wxUniChar&>
+{
+    wxArgNormalizerUtf8(const wxUniChar& s) : m_value(s.AsUTF8()) {}
+
+    const wxStringCharType *get() const { return m_value; }
+
+    wxUniChar::Utf8CharBuffer m_value;
+};
+#endif // wxUSE_UNICODE_UTF8
+
+WX_ARG_NORMALIZER_FORWARD(wxUniChar, const wxUniChar&);
+WX_ARG_NORMALIZER_FORWARD(const wxUniCharRef&, const wxUniChar&);
+WX_ARG_NORMALIZER_FORWARD(wxUniCharRef, const wxUniChar&);
+// convert char/wchar_t to wxUniChar to get output in the right encoding:
+WX_ARG_NORMALIZER_FORWARD(char, const wxUniChar&);
+WX_ARG_NORMALIZER_FORWARD(const char&, const wxUniChar&);
+WX_ARG_NORMALIZER_FORWARD(unsigned char, const wxUniChar&);
+WX_ARG_NORMALIZER_FORWARD(const unsigned char&, const wxUniChar&);
+WX_ARG_NORMALIZER_FORWARD(wchar_t, const wxUniChar&);
+WX_ARG_NORMALIZER_FORWARD(const wchar_t&, const wxUniChar&);
+
+

 #undef WX_ARG_NORMALIZER_FORWARD
 #undef _WX_ARG_NORMALIZER_FORWARD_IMPL
 
 #undef WX_ARG_NORMALIZER_FORWARD
 #undef _WX_ARG_NORMALIZER_FORWARD_IMPL
 


@@ -677,4 +792,65 @@ private:
     inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed))         \
     {}
 
     inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed))         \
     {}
 

+
+// ----------------------------------------------------------------------------
+// workaround for OpenWatcom bug #351
+// ----------------------------------------------------------------------------
+
+#ifdef __WATCOMC__
+// workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+
+// This macro can be used to forward a 'vararg' template to another one with
+// different fixed arguments types. Parameters are same as for
+// WX_DEFINE_VARARG_FUNC (rettype=void can be used here), 'convfixed' is how
+// to convert fixed arguments. For example, this is typical code for dealing
+// with different forms of format string:
+//
+// WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&),
+//                            DoPrintfWchar, DoPrintfUtf8)
+// #ifdef __WATCOMC__
+// WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&),
+//                             (wxFormatString(f1)))
+// WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*),
+//                             (wxFormatString(f1)))
+// ...
+#define WX_VARARG_WATCOM_WORKAROUND(rettype, name, numfixed, fixed, convfixed)\
+    _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS,                                      \
+                    _WX_VARARG_WATCOM_WORKAROUND,                             \
+                    rettype, name, convfixed, dummy, numfixed, fixed)
+
+#define WX_VARARG_WATCOM_WORKAROUND_CTOR(name, numfixed, fixed, convfixed)    \
+    _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS,                                      \
+                    _WX_VARARG_WATCOM_WORKAROUND_CTOR,                        \
+                    dummy, name, convfixed, dummy, numfixed, fixed)
+
+#define _WX_VARARG_WATCOM_UNPACK_1(a1)               a1
+#define _WX_VARARG_WATCOM_UNPACK_2(a1, a2)           a1, a2
+#define _WX_VARARG_WATCOM_UNPACK_3(a1, a2, a3)       a1, a2, a3
+#define _WX_VARARG_WATCOM_UNPACK_4(a1, a2, a3, a4)   a1, a2, a3, a4
+#define _WX_VARARG_WATCOM_UNPACK(N, convfixed) \
+        _WX_VARARG_WATCOM_UNPACK_##N convfixed
+
+#define _WX_VARARG_WATCOM_WORKAROUND(N, rettype, name,                        \
+                                     convfixed, dummy, numfixed, fixed)       \
+    template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)>                            \
+    rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed),                    \
+                 _WX_VARARG_JOIN(N, _WX_VARARG_ARG))                          \
+    {                                                                         \
+         return name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed),           \
+                     _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR));              \
+    }
+
+#define _WX_VARARG_WATCOM_WORKAROUND_CTOR(N, dummy1, name,                    \
+                                     convfixed, dummy2, numfixed, fixed)      \
+    template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)>                            \
+    name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed),                            \
+                 _WX_VARARG_JOIN(N, _WX_VARARG_ARG))                          \
+    {                                                                         \
+         name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed),                  \
+                     _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR));              \
+    }
+
+#endif // __WATCOMC__
+

 #endif // _WX_STRVARARG_H_
 #endif // _WX_STRVARARG_H_