don't crash on weird line endings like \r\r\n

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

diff --git a/src/common/sysopt.cpp b/src/common/sysopt.cpp
index b04061e2d1a98d298e689724603016cb4eb5c298..56227995c9edb0db31ea296cceddd7c61d1f258f 100644 (file)
--- a/src/common/sysopt.cpp
+++ b/src/common/sysopt.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        common/sysopt.cpp
+// Name:        src/common/sysopt.cpp
 // Purpose:     wxSystemOptions
 // Author:      Julian Smart
 // Modified by:
@@ -17,10 +17,6 @@
 // headers
 // ---------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "sysopt.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -30,14 +26,15 @@
 
 #if wxUSE_SYSTEM_OPTIONS
 
+#include "wx/sysopt.h"
+
 #ifndef WX_PRECOMP
+    #include "wx/app.h"
     #include "wx/list.h"
+    #include "wx/string.h"
+    #include "wx/arrstr.h"
 #endif
 
-#include "wx/string.h"
-#include "wx/sysopt.h"
-#include "wx/arrstr.h"
-
 // ----------------------------------------------------------------------------
 // private globals
 // ----------------------------------------------------------------------------
@@ -72,11 +69,33 @@ void wxSystemOptions::SetOption(const wxString& name, int value)
 
 wxString wxSystemOptions::GetOption(const wxString& name)
 {
+    wxString val;
+
     int idx = gs_optionNames.Index(name, false);
-    if (idx == wxNOT_FOUND)
-        return wxEmptyString;
-    else
-        return gs_optionValues[idx];
+    if ( idx != wxNOT_FOUND )
+    {
+        val = gs_optionValues[idx];
+    }
+    else // not set explicitely
+    {
+        // look in the environment: first for a variable named "wx_appname_name"
+        // which can be set to affect the behaviour or just this application
+        // and then for "wx_name" which can be set to change the option globally
+        wxString var(name);
+        var.Replace(_T("."), _T("_"));  // '.'s not allowed in env var names
+
+        wxString appname;
+        if ( wxTheApp )
+            appname = wxTheApp->GetAppName();
+
+        if ( !appname.empty() )
+            val = wxGetenv(_T("wx_") + appname + _T('_') + var);
+
+        if ( val.empty() )
+            val = wxGetenv(_T("wx_") + var);
+    }
+
+    return val;
 }
 
 int wxSystemOptions::GetOptionInt(const wxString& name)
@@ -86,8 +105,7 @@ int wxSystemOptions::GetOptionInt(const wxString& name)
 
 bool wxSystemOptions::HasOption(const wxString& name)
 {
-    return gs_optionNames.Index(name, false) != wxNOT_FOUND;
+    return !GetOption(name).empty();
 }
 
 #endif // wxUSE_SYSTEM_OPTIONS
-