A few tweaks and cleanups

[wxWidgets.git] / src / msw / regconf.cpp

diff --git a/src/msw/regconf.cpp b/src/msw/regconf.cpp
index 5d8d70f97a357bad62dab6b2dc9641fcac10af7f..6494b321f779b14520f468e33e27b12898f15222 100644 (file)
--- a/src/msw/regconf.cpp
+++ b/src/msw/regconf.cpp
@@ -274,6 +274,7 @@ void wxRegConfig::SetPath(const wxString& strPath)
                             // check the boundary condition below
 
                             // this is more efficient than strrchr()
+                            dst--;
                             while ( *dst != wxCONFIG_PATH_SEPARATOR )
                             {
                                 dst--;
@@ -288,10 +289,13 @@ void wxRegConfig::SetPath(const wxString& strPath)
                             posLastSlash = -1;
                         }
 
-                        // this shouldn't happen
+                        // we must have found a slash one way or another!
                         wxASSERT_MSG( *dst == wxCONFIG_PATH_SEPARATOR,
                                       _T("error in wxRegConfig::SetPath") );
 
+                        // stay at the same position
+                        dst--;
+
                         // we killed one
                         totalSlashes--;
                     }
@@ -309,8 +313,12 @@ void wxRegConfig::SetPath(const wxString& strPath)
 
                         totalSlashes++;
                     }
-                    //else: nothing to do, we squeeze several subseuquent
-                    //      slashes into one
+                    else // previous char was a slash too
+                    {
+                        // squeeze several subsequent slashes into one: i.e.
+                        // just ignore this one
+                        dst--;
+                    }
                 }
             }
             else // normal character
@@ -342,21 +350,24 @@ void wxRegConfig::SetPath(const wxString& strPath)
 
     // registry APIs want backslashes instead of slashes
     wxString strRegPath;
-    size_t len = m_strPath.length();
+    if ( !m_strPath.empty() )
+    {
+        size_t len = m_strPath.length();
 
-    const wxChar *src = m_strPath.c_str();
-    wxChar *dst = strRegPath.GetWriteBuf(len);
+        const wxChar *src = m_strPath.c_str();
+        wxChar *dst = strRegPath.GetWriteBuf(len);
 
-    const wxChar *end = src + len;
-    for ( ; src < end; src++, dst++ )
-    {
-        if ( *src == wxCONFIG_PATH_SEPARATOR )
-            *dst = _T('\\');
-        else
-            *dst = *src;
-    }
+        const wxChar *end = src + len;
+        for ( ; src < end; src++, dst++ )
+        {
+            if ( *src == wxCONFIG_PATH_SEPARATOR )
+                *dst = _T('\\');
+            else
+                *dst = *src;
+        }
 
-    strRegPath.UngetWriteBuf(len);
+        strRegPath.UngetWriteBuf(len);
+    }
 
     // this is not needed any longer as we don't create keys unnecessarily any
     // more (now it is done on demand, i.e. only when they're going to contain
@@ -547,44 +558,10 @@ wxConfigBase::EntryType wxRegConfig::GetEntryType(const wxString& key) const
 // reading/writing
 // ----------------------------------------------------------------------------
 
-bool wxRegConfig::Read(const wxString& key, wxString *pStr) const
+bool wxRegConfig::DoReadString(const wxString& key, wxString *pStr) const
 {
-  wxConfigPathChanger path(this, key);
-
-  bool bQueryGlobal = TRUE;
-
-  // if immutable key exists in global key we must check that it's not
-  // overriden by the local key with the same name
-  if ( IsImmutable(path.Name()) ) {
-    if ( TryGetValue(m_keyGlobal, path.Name(), *pStr) ) {
-      if ( m_keyLocal.Exists() && LocalKey().HasValue(path.Name()) ) {
-        wxLogWarning(wxT("User value for immutable key '%s' ignored."),
-                   path.Name().c_str());
-      }
-     *pStr = wxConfigBase::ExpandEnvVars(*pStr);
-      return TRUE;
-    }
-    else {
-      // don't waste time - it's not there anyhow
-      bQueryGlobal = FALSE;
-    }
-  }
+    wxCHECK_MSG( pStr, FALSE, _T("wxRegConfig::Read(): NULL param") );
 
-  // first try local key
-  if ( (m_keyLocal.Exists() && TryGetValue(LocalKey(), path.Name(), *pStr)) ||
-       (bQueryGlobal && TryGetValue(m_keyGlobal, path.Name(), *pStr)) ) {
-    // nothing to do
-
-    *pStr = wxConfigBase::ExpandEnvVars(*pStr);
-    return TRUE;
-  }
-
-  return FALSE;
-}
-
-bool wxRegConfig::Read(const wxString& key, wxString *pStr,
-                       const wxString& szDefault) const
-{
   wxConfigPathChanger path(this, key);
 
   bool bQueryGlobal = TRUE;
@@ -609,25 +586,19 @@ bool wxRegConfig::Read(const wxString& key, wxString *pStr,
   // first try local key
   if ( (m_keyLocal.Exists() && TryGetValue(LocalKey(), path.Name(), *pStr)) ||
        (bQueryGlobal && TryGetValue(m_keyGlobal, path.Name(), *pStr)) ) {
-    *pStr = wxConfigBase::ExpandEnvVars(*pStr);
     return TRUE;
   }
-  else {
-    if ( IsRecordingDefaults() ) {
-      ((wxRegConfig*)this)->Write(key, szDefault);
-    }
-
-    // default value
-    *pStr = szDefault;
-  }
-
-  *pStr = wxConfigBase::ExpandEnvVars(*pStr);
 
   return FALSE;
 }
 
-bool wxRegConfig::Read(const wxString& key, long *plResult) const
+// this exactly reproduces the string version above except for ExpandEnvVars(),
+// we really should avoid this code duplication somehow...
+
+bool wxRegConfig::DoReadLong(const wxString& key, long *plResult) const
 {
+    wxCHECK_MSG( plResult, FALSE, _T("wxRegConfig::Read(): NULL param") );
+
   wxConfigPathChanger path(this, key);
 
   bool bQueryGlobal = TRUE;
@@ -654,10 +625,11 @@ bool wxRegConfig::Read(const wxString& key, long *plResult) const
        (bQueryGlobal && TryGetValue(m_keyGlobal, path.Name(), plResult)) ) {
     return TRUE;
   }
+
   return FALSE;
 }
 
-bool wxRegConfig::Write(const wxString& key, const wxString& szValue)
+bool wxRegConfig::DoWriteString(const wxString& key, const wxString& szValue)
 {
   wxConfigPathChanger path(this, key);
 
@@ -669,7 +641,7 @@ bool wxRegConfig::Write(const wxString& key, const wxString& szValue)
   return LocalKey().SetValue(path.Name(), szValue);
 }
 
-bool wxRegConfig::Write(const wxString& key, long lValue)
+bool wxRegConfig::DoWriteLong(const wxString& key, long lValue)
 {
   wxConfigPathChanger path(this, key);