Rewind the input stream after failing to load image from it.

[wxWidgets.git] / src / common / msgout.cpp

diff --git a/src/common/msgout.cpp b/src/common/msgout.cpp
old mode 100755 (executable)
new mode 100644 (file)
index e6a0799..e01073c
--- a/src/common/msgout.cpp
+++ b/src/common/msgout.cpp
@@ -1,11 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        common/msgout.cpp
+// Name:        src/common/msgout.cpp
 // Purpose:     wxMessageOutput implementation
 // Author:      Mattia Barbon
 // Modified by:
 // Created:     17.07.02
 // RCS-ID:      $Id$
-// Copyright:   (c) the wxWindows team
+// Copyright:   (c) the wxWidgets team
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -17,10 +17,6 @@
 // headers
 // ---------------------------------------------------------------------------
 
-#ifdef __GNUG__
-    #pragma implementation "msgout.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -33,28 +29,38 @@
     #include "wx/ffile.h"
     #include "wx/app.h"
     #include "wx/intl.h"
+    #include "wx/log.h"
     #if wxUSE_GUI
         #include "wx/msgdlg.h"
     #endif // wxUSE_GUI
 #endif
 
 #include "wx/msgout.h"
-#include "wx/log.h"
-
+#include "wx/apptrait.h"
 #include <stdarg.h>
 #include <stdio.h>
 
+#if defined(__WINDOWS__)
+    #include "wx/msw/private.h"
+#endif
+
 // ===========================================================================
 // implementation
 // ===========================================================================
 
+#if wxUSE_BASE
+
+// ----------------------------------------------------------------------------
+// wxMessageOutput
+// ----------------------------------------------------------------------------
+
 wxMessageOutput* wxMessageOutput::ms_msgOut = 0;
 
 wxMessageOutput* wxMessageOutput::Get()
 {
     if ( !ms_msgOut && wxTheApp )
     {
-        ms_msgOut = wxTheApp->CreateMessageOutput();
+        ms_msgOut = wxTheApp->GetTraits()->CreateMessageOutput();
     }
 
     return ms_msgOut;
@@ -67,11 +73,8 @@ wxMessageOutput* wxMessageOutput::Set(wxMessageOutput* msgout)
     return old;
 }
 
-// ----------------------------------------------------------------------------
-// wxMessageOutputStderr
-// ----------------------------------------------------------------------------
-
-void wxMessageOutputStderr::Printf(const wxChar* format, ...)
+#if !wxUSE_UTF8_LOCALE_ONLY
+void wxMessageOutput::DoPrintfWchar(const wxChar *format, ...)
 {
     va_list args;
     va_start(args, format);
@@ -80,16 +83,12 @@ void wxMessageOutputStderr::Printf(const wxChar* format, ...)
     out.PrintfV(format, args);
     va_end(args);
 
-    fprintf(stderr, "%s", (const char*) out.mb_str());
+    Output(out);
 }
+#endif // !wxUSE_UTF8_LOCALE_ONLY
 
-// ----------------------------------------------------------------------------
-// wxMessageOutputMessageBox
-// ----------------------------------------------------------------------------
-
-#if wxUSE_GUI
-
-void wxMessageOutputMessageBox::Printf(const wxChar* format, ...)
+#if wxUSE_UNICODE_UTF8
+void wxMessageOutput::DoPrintfUtf8(const char *format, ...)
 {
     va_list args;
     va_start(args, format);
@@ -98,35 +97,117 @@ void wxMessageOutputMessageBox::Printf(const wxChar* format, ...)
     out.PrintfV(format, args);
     va_end(args);
 
-    // the native MSW msg box understands the TABs, others don't
-#ifndef __WXMSW__
-    out.Replace(wxT("\t"), wxT("        "));
-#endif
+    Output(out);
+}
+#endif // wxUSE_UNICODE_UTF8
+
+// ----------------------------------------------------------------------------
+// wxMessageOutputBest
+// ----------------------------------------------------------------------------
+
+void wxMessageOutputBest::Output(const wxString& str)
+{
+#ifdef __WINDOWS__
+    // decide whether to use console output or not
+    wxAppTraits * const traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+    const bool hasStderr = traits ? traits->CanUseStderr() : false;
+
+    if ( !(m_flags & wxMSGOUT_PREFER_MSGBOX) )
+    {
+        if ( hasStderr && traits->WriteToStderr(AppendLineFeedIfNeeded(str)) )
+            return;
+    }
 
     wxString title;
     if ( wxTheApp )
-        title.Printf(_("%s message"), wxTheApp->GetAppName().c_str());
+        title = wxTheApp->GetAppDisplayName();
+    else // Use some title to avoid default "Error"
+        title = _("Message");
+
+    ::MessageBox(NULL, str.t_str(), title.t_str(), MB_ICONINFORMATION | MB_OK);
+#else // !__WINDOWS__
+    // TODO: use the native message box for the other ports too
+    wxMessageOutputStderr::Output(str);
+#endif // __WINDOWS__/!__WINDOWS__
+}
 
-    ::wxMessageBox(out, title);
+// ----------------------------------------------------------------------------
+// wxMessageOutputStderr
+// ----------------------------------------------------------------------------
+
+wxString wxMessageOutputStderr::AppendLineFeedIfNeeded(const wxString& str)
+{
+    wxString strLF(str);
+    if ( strLF.empty() || *strLF.rbegin() != '\n' )
+        strLF += '\n';
+
+    return strLF;
 }
 
-#endif // wxUSE_GUI
+void wxMessageOutputStderr::Output(const wxString& str)
+{
+    const wxString strWithLF = AppendLineFeedIfNeeded(str);
+    const wxWX2MBbuf buf = strWithLF.mb_str();
+
+    if ( buf )
+        fprintf(m_fp, "%s", (const char*) buf);
+    else // print at least something
+        fprintf(m_fp, "%s", (const char*) strWithLF.ToAscii());
+
+    fflush(m_fp);
+}
+
+// ----------------------------------------------------------------------------
+// wxMessageOutputDebug
+// ----------------------------------------------------------------------------
+
+void wxMessageOutputDebug::Output(const wxString& str)
+{
+#if defined(__WXMSW__) && !defined(__WXMICROWIN__)
+    wxString out(AppendLineFeedIfNeeded(str));
+    out.Replace(wxT("\t"), wxT("        "));
+    out.Replace(wxT("\n"), wxT("\r\n"));
+    ::OutputDebugString(out.t_str());
+#else
+    // TODO: use native debug output function for the other ports too
+    wxMessageOutputStderr::Output(str);
+#endif // platform
+}
 
 // ----------------------------------------------------------------------------
 // wxMessageOutputLog
 // ----------------------------------------------------------------------------
 
-void wxMessageOutputLog::Printf(const wxChar* format, ...)
+void wxMessageOutputLog::Output(const wxString& str)
 {
-    wxString out;
+    wxString out(str);
 
-    va_list args;
-    va_start(args, format);
+    out.Replace(wxT("\t"), wxT("        "));
 
-    out.PrintfV(format, args);
-    va_end(args);
+    wxLogMessage(wxT("%s"), out.c_str());
+}
+
+#endif // wxUSE_BASE
+
+// ----------------------------------------------------------------------------
+// wxMessageOutputMessageBox
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI && wxUSE_MSGDLG
 
+void wxMessageOutputMessageBox::Output(const wxString& str)
+{
+    wxString out(str);
+
+    // the native MSW msg box understands the TABs, others don't
+#ifndef __WXMSW__
     out.Replace(wxT("\t"), wxT("        "));
+#endif
 
-    ::wxLogMessage(wxT("%s"), out.c_str());
+    wxString title = wxT("wxWidgets") ;
+    if (wxTheApp) title = wxTheApp->GetAppDisplayName();
+
+    ::wxMessageBox(out, title);
 }
+
+#endif // wxUSE_GUI