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use _snprintf() in system_sprintf() for the compilers which have it; really fix warning about unused maxlen in wxPrintfConvSpec::ReplaceAsteriskWith()

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41430 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2006-09-25 12:27:26 +00:00
parent 8a16d7370e
commit c57cdbd8d6
1 changed files with 21 additions and 24 deletions
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45
src/common/wxchar.cpp
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@ -196,7 +196,6 @@ bool WXDLLEXPORT wxOKlibc()
// implemented later in this file using wxVsnprintf() and that would
// result in an endless recursion and thus in a stack overflow
#if wxUSE_UNICODE
#if defined(__WINDOWS__)
// all compilers under Windows should have swprintf()
#define HAVE_SWPRINTF
@ -213,17 +212,16 @@ bool WXDLLEXPORT wxOKlibc()
#define HAVE_BROKEN_SWPRINTF_DECL
#endif
// problem: on some systems swprintf takes the 'max' argument while on others
// it doesn't
// problem: on some systems swprintf takes the 'max' argument while on
// others it doesn't
#if defined(HAVE_BROKEN_SWPRINTF_DECL)
// like when using sprintf(), since 'max' is not used, wxVsnprintf() should
// always ensure that 'buff' is big enough for all common needs
// like when using sprintf(), since 'max' is not used, wxVsnprintf()
// should always ensure that 'buff' is big enough for all common needs
#define system_sprintf(buff, max, flags, data) \
::swprintf(buff, flags, data)
#else
#define SYSTEM_SPRINTF_IS_UNSAFE
#else
#if !defined(HAVE_SWPRINTF)
#error wxVsnprintf() needs a system swprintf() implementation!
#endif
@ -231,24 +229,24 @@ bool WXDLLEXPORT wxOKlibc()
#define system_sprintf(buff, max, flags, data) \
::swprintf(buff, max, flags, data)
#endif
#else
#if defined(HAVE_SNPRINTF)
#else // !wxUSE_UNICODE
#if defined(__VISUALC__) || \
(defined(__BORLANDC__) && __BORLANDC__ >= 0x540)
#define system_sprintf(buff, max, flags, data) \
::_snprintf(buff, max, flags, data)
#elif defined(HAVE_SNPRINTF)
#define system_sprintf(buff, max, flags, data) \
::snprintf(buff, max, flags, data)
#else // NB: at least sprintf() should *always* be available
// since 'max' is not used in this case, wxVsnprintf() should always ensure
// that 'buff' is big enough for all common needs
#else // NB: at least sprintf() should always be available
// since 'max' is not used in this case, wxVsnprintf() should always
// ensure that 'buff' is big enough for all common needs
// (see wxMAX_SVNPRINTF_FLAGBUFFER_LEN and wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN)
#define system_sprintf(buff, max, flags, data) \
::sprintf(buff, flags, data)
#define SYSTEM_SPRINTF_IS_UNSAFE
#endif
#endif
#endif // wxUSE_UNICODE/!wxUSE_UNICODE
@ -678,12 +676,11 @@ void wxPrintfConvSpec::ReplaceAsteriskWith(int width)
}
// replace * with the actual integer given as width
int maxlen = (m_szFlags + wxMAX_SVNPRINTF_FLAGBUFFER_LEN - pwidth) / sizeof(wxChar);
int offset = system_sprintf(pwidth, maxlen, wxT("%d"), abs(width));
#ifdef HAVE_BROKEN_SWPRINTF_DECL
wxUnusedVar(maxlen); // avoid dummy warnings
#ifndef SYSTEM_SPRINTF_IS_UNSAFE
int maxlen = (m_szFlags + wxMAX_SVNPRINTF_FLAGBUFFER_LEN - pwidth) /
sizeof(wxChar);
#endif
int offset = system_sprintf(pwidth, maxlen, wxT("%d"), abs(width));
// restore after the expanded * what was following it
wxStrcpy(pwidth+offset, temp);