X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a121d7205216f5b4b144264096e07104b5ad3172..bd1a4a99fc1bec4ac5d0b14379dc5345d6ce3253:/src/common/fileconf.cpp

diff --git a/src/common/fileconf.cpp b/src/common/fileconf.cpp
index 5e445db8ce..70676fa8ed 100644
--- a/src/common/fileconf.cpp
+++ b/src/common/fileconf.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        fileconf.cpp
+// Name:        src/common/fileconf.cpp
 // Purpose:     implementation of wxFileConfig derivation of wxConfig
 // Author:      Vadim Zeitlin
 // Modified by:
@@ -10,10 +10,6 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "fileconf.h"
-#endif
-
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
@@ -49,6 +45,7 @@
 
 #if defined(__WXMAC__)
   #include  "wx/mac/private.h"  // includes mac headers
+  #include  "wx/filename.h"     // for MacSetTypeAndCreator
 #endif
 
 #if defined(__WXMSW__)
@@ -75,6 +72,8 @@
   #define MAX_PATH 512
 #endif
 
+#define FILECONF_TRACE_MASK _T("fileconf")
+
 // ----------------------------------------------------------------------------
 // global functions declarations
 // ----------------------------------------------------------------------------
@@ -203,6 +202,9 @@ private:
   // DeleteSubgroupByName helper
   bool DeleteSubgroup(wxFileConfigGroup *pGroup);
 
+  // used by Rename()
+  void UpdateGroupAndSubgroupsLines();
+
 public:
   // ctor
   wxFileConfigGroup(wxFileConfigGroup *pParent, const wxString& strName, wxFileConfig *);
@@ -269,7 +271,7 @@ wxString wxFileConfig::GetGlobalDir()
     strDir = wxMacFindFolder(  (short) kOnSystemDisk, kPreferencesFolderType, kDontCreateFolder ) ;
 #elif defined( __UNIX__ )
     strDir = wxT("/etc/");
-#elif defined(__WXPM__)
+#elif defined(__OS2__)
     ULONG aulSysInfo[QSV_MAX] = {0};
     UINT drive;
     APIRET rc;
@@ -285,8 +287,11 @@ wxString wxFileConfig::GetGlobalDir()
 #elif defined(__DOS__)
     // There's no such thing as global cfg dir in MS-DOS, let's return
     // current directory (FIXME_MGL?)
-    return wxT(".\\");
+    strDir = wxT(".\\");
+#elif defined(__WXWINCE__)
+    strDir = wxT("\\Windows\\");
 #else // Windows
+
     wxChar szWinDir[MAX_PATH];
     ::GetWindowsDirectory(szWinDir, MAX_PATH);
 
@@ -303,18 +308,22 @@ wxString wxFileConfig::GetLocalDir()
 
 #if defined(__WXMAC__) || defined(__DOS__)
     // no local dir concept on Mac OS 9 or MS-DOS
-    return GetGlobalDir() ;
+    strDir << GetGlobalDir() ;
 #else
     wxGetHomeDir(&strDir);
 
-#ifdef  __UNIX__
-#ifdef __VMS
-    if (strDir.Last() != wxT(']'))
-#endif
-    if (strDir.Last() != wxT('/')) strDir << wxT('/');
-#else
-    if (strDir.Last() != wxT('\\')) strDir << wxT('\\');
-#endif
+    #ifdef  __UNIX__
+        if (
+            (strDir.Last() != wxT('/'))
+        #ifdef __VMS
+            && (strDir.Last() != wxT(']'))
+        #endif
+            )
+            strDir << wxT('/');
+    #else
+        if (strDir.Last() != wxT('\\'))
+            strDir << wxT('\\');
+    #endif
 #endif
 
     return strDir;
@@ -373,7 +382,7 @@ wxString wxFileConfig::GetLocalFileName(const wxChar *szFile)
 void wxFileConfig::Init()
 {
     m_pCurrentGroup =
-    m_pRootGroup    = new wxFileConfigGroup(NULL, wxT(""), this);
+    m_pRootGroup    = new wxFileConfigGroup(NULL, wxEmptyString, this);
 
     m_linesHead =
     m_linesTail = NULL;
@@ -381,7 +390,7 @@ void wxFileConfig::Init()
     // It's not an error if (one of the) file(s) doesn't exist.
 
     // parse the global file
-    if ( !m_strGlobalFile.IsEmpty() && wxFile::Exists(m_strGlobalFile) )
+    if ( !m_strGlobalFile.empty() && wxFile::Exists(m_strGlobalFile) )
     {
         wxTextFile fileGlobal(m_strGlobalFile);
 
@@ -397,7 +406,7 @@ void wxFileConfig::Init()
     }
 
     // parse the local file
-    if ( !m_strLocalFile.IsEmpty() && wxFile::Exists(m_strLocalFile) )
+    if ( !m_strLocalFile.empty() && wxFile::Exists(m_strLocalFile) )
     {
         wxTextFile fileLocal(m_strLocalFile);
         if ( fileLocal.Open(m_conv/*ignored in ANSI build*/) )
@@ -425,36 +434,36 @@ wxFileConfig::wxFileConfig(const wxString& appName, const wxString& vendorName,
               m_conv(conv)
 {
     // Make up names for files if empty
-    if ( m_strLocalFile.IsEmpty() && (style & wxCONFIG_USE_LOCAL_FILE) )
+    if ( m_strLocalFile.empty() && (style & wxCONFIG_USE_LOCAL_FILE) )
         m_strLocalFile = GetLocalFileName(GetAppName());
 
-    if ( m_strGlobalFile.IsEmpty() && (style & wxCONFIG_USE_GLOBAL_FILE) )
+    if ( m_strGlobalFile.empty() && (style & wxCONFIG_USE_GLOBAL_FILE) )
         m_strGlobalFile = GetGlobalFileName(GetAppName());
 
     // Check if styles are not supplied, but filenames are, in which case
     // add the correct styles.
-    if ( !m_strLocalFile.IsEmpty() )
+    if ( !m_strLocalFile.empty() )
         SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
 
-    if ( !m_strGlobalFile.IsEmpty() )
+    if ( !m_strGlobalFile.empty() )
         SetStyle(GetStyle() | wxCONFIG_USE_GLOBAL_FILE);
 
     // if the path is not absolute, prepend the standard directory to it
     // UNLESS wxCONFIG_USE_RELATIVE_PATH style is set
     if ( !(style & wxCONFIG_USE_RELATIVE_PATH) )
     {
-        if ( !m_strLocalFile.IsEmpty() && !wxIsAbsolutePath(m_strLocalFile) )
+        if ( !m_strLocalFile.empty() && !wxIsAbsolutePath(m_strLocalFile) )
         {
-            wxString strLocal = m_strLocalFile;
+            const wxString strLocalOrig = m_strLocalFile;
             m_strLocalFile = GetLocalDir();
-            m_strLocalFile << strLocal;
+            m_strLocalFile << strLocalOrig;
         }
 
-        if ( !m_strGlobalFile.IsEmpty() && !wxIsAbsolutePath(m_strGlobalFile) )
+        if ( !m_strGlobalFile.empty() && !wxIsAbsolutePath(m_strGlobalFile) )
         {
-            wxString strGlobal = m_strGlobalFile;
+            const wxString strGlobalOrig = m_strGlobalFile;
             m_strGlobalFile = GetGlobalDir();
-            m_strGlobalFile << strGlobal;
+            m_strGlobalFile << strGlobalOrig;
         }
     }
 
@@ -472,7 +481,7 @@ wxFileConfig::wxFileConfig(wxInputStream &inStream, wxMBConv& conv)
     SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
 
     m_pCurrentGroup =
-    m_pRootGroup    = new wxFileConfigGroup(NULL, wxT(""), this);
+    m_pRootGroup    = new wxFileConfigGroup(NULL, wxEmptyString, this);
 
     m_linesHead =
     m_linesTail = NULL;
@@ -486,7 +495,7 @@ wxFileConfig::wxFileConfig(wxInputStream &inStream, wxMBConv& conv)
         char buf[1024];
         do
         {
-            inStream.Read(buf, WXSIZEOF(buf));
+            inStream.Read(buf, WXSIZEOF(buf)-1);  // leave room for the NULL
 
             const wxStreamError err = inStream.GetLastError();
 
@@ -496,7 +505,12 @@ wxFileConfig::wxFileConfig(wxInputStream &inStream, wxMBConv& conv)
                 break;
             }
 
-            strTmp.append(wxConvertMB2WX(buf), inStream.LastRead());
+            // FIXME: this is broken because if we have part of multibyte
+            //        character in the buffer (and another part hasn't been
+            //        read yet) we're going to lose data because of conversion
+            //        errors
+            buf[inStream.LastRead()] = '\0';
+            strTmp += conv.cMB2WX(buf);
         }
         while ( !inStream.Eof() );
 
@@ -527,40 +541,42 @@ wxFileConfig::wxFileConfig(wxInputStream &inStream, wxMBConv& conv)
     }
 
     // also add whatever we have left in the translated string.
-    memText.AddLine(strTrans);
+    if ( !strTrans.empty() )
+        memText.AddLine(strTrans);
 
     // Finally we can parse it all.
     Parse(memText, true /* local */);
 
     SetRootPath();
+    ResetDirty();
 }
 
 #endif // wxUSE_STREAMS
 
 void wxFileConfig::CleanUp()
 {
-  delete m_pRootGroup;
+    delete m_pRootGroup;
 
-  wxFileConfigLineList *pCur = m_linesHead;
-  while ( pCur != NULL ) {
-    wxFileConfigLineList *pNext = pCur->Next();
-    delete pCur;
-    pCur = pNext;
-  }
+    wxFileConfigLineList *pCur = m_linesHead;
+    while ( pCur != NULL ) {
+        wxFileConfigLineList *pNext = pCur->Next();
+        delete pCur;
+        pCur = pNext;
+    }
 }
 
 wxFileConfig::~wxFileConfig()
 {
-  Flush();
+    Flush();
 
-  CleanUp();
+    CleanUp();
 }
 
 // ----------------------------------------------------------------------------
 // parse a config file
 // ----------------------------------------------------------------------------
 
-void wxFileConfig::Parse(wxTextBuffer& buffer, bool bLocal)
+void wxFileConfig::Parse(const wxTextBuffer& buffer, bool bLocal)
 {
   const wxChar *pStart;
   const wxChar *pEnd;
@@ -577,7 +593,7 @@ void wxFileConfig::Parse(wxTextBuffer& buffer, bool bLocal)
     {
       LineListAppend(strLine);
 
-      // let the root group have it start line as well
+      // let the root group have its start line as well
       if ( !n )
       {
         m_pCurrentGroup->SetLine(m_linesTail);
@@ -652,7 +668,7 @@ void wxFileConfig::Parse(wxTextBuffer& buffer, bool bLocal)
       }
     }
     else {                        // a key
-      const wxChar *pEnd = pStart;
+      pEnd = pStart;
       while ( *pEnd && *pEnd != wxT('=') /* && !wxIsspace(*pEnd)*/ ) {
         if ( *pEnd == wxT('\\') ) {
           // next character may be space or not - still take it because it's
@@ -726,45 +742,59 @@ void wxFileConfig::Parse(wxTextBuffer& buffer, bool bLocal)
 
 void wxFileConfig::SetRootPath()
 {
-  m_strPath.Empty();
-  m_pCurrentGroup = m_pRootGroup;
+    m_strPath.Empty();
+    m_pCurrentGroup = m_pRootGroup;
 }
 
-void wxFileConfig::SetPath(const wxString& strPath)
+bool
+wxFileConfig::DoSetPath(const wxString& strPath, bool createMissingComponents)
 {
-  wxArrayString aParts;
+    wxArrayString aParts;
 
-  if ( strPath.IsEmpty() ) {
-    SetRootPath();
-    return;
-  }
+    if ( strPath.empty() ) {
+        SetRootPath();
+        return true;
+    }
 
-  if ( strPath[0] == wxCONFIG_PATH_SEPARATOR ) {
-    // absolute path
-    wxSplitPath(aParts, strPath);
-  }
-  else {
-    // relative path, combine with current one
-    wxString strFullPath = m_strPath;
-    strFullPath << wxCONFIG_PATH_SEPARATOR << strPath;
-    wxSplitPath(aParts, strFullPath);
-  }
+    if ( strPath[0] == wxCONFIG_PATH_SEPARATOR ) {
+        // absolute path
+        wxSplitPath(aParts, strPath);
+    }
+    else {
+        // relative path, combine with current one
+        wxString strFullPath = m_strPath;
+        strFullPath << wxCONFIG_PATH_SEPARATOR << strPath;
+        wxSplitPath(aParts, strFullPath);
+    }
 
-  // change current group
-  size_t n;
-  m_pCurrentGroup = m_pRootGroup;
-  for ( n = 0; n < aParts.Count(); n++ ) {
-    wxFileConfigGroup *pNextGroup = m_pCurrentGroup->FindSubgroup(aParts[n]);
-    if ( pNextGroup == NULL )
-      pNextGroup = m_pCurrentGroup->AddSubgroup(aParts[n]);
-    m_pCurrentGroup = pNextGroup;
-  }
+    // change current group
+    size_t n;
+    m_pCurrentGroup = m_pRootGroup;
+    for ( n = 0; n < aParts.Count(); n++ ) {
+        wxFileConfigGroup *pNextGroup = m_pCurrentGroup->FindSubgroup(aParts[n]);
+        if ( pNextGroup == NULL )
+        {
+            if ( !createMissingComponents )
+                return false;
 
-  // recombine path parts in one variable
-  m_strPath.Empty();
-  for ( n = 0; n < aParts.Count(); n++ ) {
-    m_strPath << wxCONFIG_PATH_SEPARATOR << aParts[n];
-  }
+            pNextGroup = m_pCurrentGroup->AddSubgroup(aParts[n]);
+        }
+
+        m_pCurrentGroup = pNextGroup;
+    }
+
+    // recombine path parts in one variable
+    m_strPath.Empty();
+    for ( n = 0; n < aParts.Count(); n++ ) {
+        m_strPath << wxCONFIG_PATH_SEPARATOR << aParts[n];
+    }
+
+    return true;
+}
+
+void wxFileConfig::SetPath(const wxString& strPath)
+{
+    DoSetPath(strPath, true /* create missing path components */);
 }
 
 // ----------------------------------------------------------------------------
@@ -773,66 +803,66 @@ void wxFileConfig::SetPath(const wxString& strPath)
 
 bool wxFileConfig::GetFirstGroup(wxString& str, long& lIndex) const
 {
-  lIndex = 0;
-  return GetNextGroup(str, lIndex);
+    lIndex = 0;
+    return GetNextGroup(str, lIndex);
 }
 
 bool wxFileConfig::GetNextGroup (wxString& str, long& lIndex) const
 {
-  if ( size_t(lIndex) < m_pCurrentGroup->Groups().Count() ) {
-    str = m_pCurrentGroup->Groups()[(size_t)lIndex++]->Name();
-    return true;
-  }
-  else
-    return false;
+    if ( size_t(lIndex) < m_pCurrentGroup->Groups().Count() ) {
+        str = m_pCurrentGroup->Groups()[(size_t)lIndex++]->Name();
+        return true;
+    }
+    else
+        return false;
 }
 
 bool wxFileConfig::GetFirstEntry(wxString& str, long& lIndex) const
 {
-  lIndex = 0;
-  return GetNextEntry(str, lIndex);
+    lIndex = 0;
+    return GetNextEntry(str, lIndex);
 }
 
 bool wxFileConfig::GetNextEntry (wxString& str, long& lIndex) const
 {
-  if ( size_t(lIndex) < m_pCurrentGroup->Entries().Count() ) {
-    str = m_pCurrentGroup->Entries()[(size_t)lIndex++]->Name();
-    return true;
-  }
-  else
-    return false;
+    if ( size_t(lIndex) < m_pCurrentGroup->Entries().Count() ) {
+        str = m_pCurrentGroup->Entries()[(size_t)lIndex++]->Name();
+        return true;
+    }
+    else
+        return false;
 }
 
 size_t wxFileConfig::GetNumberOfEntries(bool bRecursive) const
 {
-  size_t n = m_pCurrentGroup->Entries().Count();
-  if ( bRecursive ) {
-    wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
-    size_t nSubgroups = m_pCurrentGroup->Groups().Count();
-    for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
-      CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
-      n += GetNumberOfEntries(true);
-      CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
+    size_t n = m_pCurrentGroup->Entries().Count();
+    if ( bRecursive ) {
+        wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
+        size_t nSubgroups = m_pCurrentGroup->Groups().Count();
+        for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
+            CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
+            n += GetNumberOfEntries(true);
+            CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
+        }
     }
-  }
 
-  return n;
+    return n;
 }
 
 size_t wxFileConfig::GetNumberOfGroups(bool bRecursive) const
 {
-  size_t n = m_pCurrentGroup->Groups().Count();
-  if ( bRecursive ) {
-    wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
-    size_t nSubgroups = m_pCurrentGroup->Groups().Count();
-    for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
-      CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
-      n += GetNumberOfGroups(true);
-      CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
+    size_t n = m_pCurrentGroup->Groups().Count();
+    if ( bRecursive ) {
+        wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
+        size_t nSubgroups = m_pCurrentGroup->Groups().Count();
+        for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
+            CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
+            n += GetNumberOfGroups(true);
+            CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
+        }
     }
-  }
 
-  return n;
+    return n;
 }
 
 // ----------------------------------------------------------------------------
@@ -841,18 +871,28 @@ size_t wxFileConfig::GetNumberOfGroups(bool bRecursive) const
 
 bool wxFileConfig::HasGroup(const wxString& strName) const
 {
-  wxConfigPathChanger path(this, strName);
+    // special case: DoSetPath("") does work as it's equivalent to DoSetPath("/")
+    // but there is no group with empty name so treat this separately
+    if ( strName.empty() )
+        return false;
+
+    const wxString pathOld = GetPath();
+
+    wxFileConfig *self = wx_const_cast(wxFileConfig *, this);
+    const bool
+        rc = self->DoSetPath(strName, false /* don't create missing components */);
+
+    self->SetPath(pathOld);
 
-  wxFileConfigGroup *pGroup = m_pCurrentGroup->FindSubgroup(path.Name());
-  return pGroup != NULL;
+    return rc;
 }
 
 bool wxFileConfig::HasEntry(const wxString& strName) const
 {
-  wxConfigPathChanger path(this, strName);
+    wxConfigPathChanger path(this, strName);
 
-  wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
-  return pEntry != NULL;
+    wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
+    return pEntry != NULL;
 }
 
 // ----------------------------------------------------------------------------
@@ -861,16 +901,16 @@ bool wxFileConfig::HasEntry(const wxString& strName) const
 
 bool wxFileConfig::DoReadString(const wxString& key, wxString* pStr) const
 {
-  wxConfigPathChanger path(this, key);
+    wxConfigPathChanger path(this, key);
 
-  wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
-  if (pEntry == NULL) {
-    return false;
-  }
+    wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
+    if (pEntry == NULL) {
+        return false;
+    }
 
-  *pStr = pEntry->Value();
+    *pStr = pEntry->Value();
 
-  return true;
+    return true;
 }
 
 bool wxFileConfig::DoReadLong(const wxString& key, long *pl) const
@@ -890,21 +930,21 @@ bool wxFileConfig::DoWriteString(const wxString& key, const wxString& szValue)
     wxConfigPathChanger     path(this, key);
     wxString                strName = path.Name();
 
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("  Writing String '%s' = '%s' to Group '%s'"),
                 strName.c_str(),
                 szValue.c_str(),
                 GetPath().c_str() );
 
-    if ( strName.IsEmpty() )
+    if ( strName.empty() )
     {
             // setting the value of a group is an error
 
-        wxASSERT_MSG( wxIsEmpty(szValue), wxT("can't set value of a group!") );
+        wxASSERT_MSG( szValue.empty(), wxT("can't set value of a group!") );
 
             // ... except if it's empty in which case it's a way to force it's creation
 
-        wxLogTrace( _T("wxFileConfig"),
+        wxLogTrace( FILECONF_TRACE_MASK,
                     _T("  Creating group %s"),
                     m_pCurrentGroup->Name().c_str() );
 
@@ -928,13 +968,13 @@ bool wxFileConfig::DoWriteString(const wxString& key, const wxString& szValue)
 
         if ( pEntry == 0 )
         {
-            wxLogTrace( _T("wxFileConfig"),
+            wxLogTrace( FILECONF_TRACE_MASK,
                         _T("  Adding Entry %s"),
                         strName.c_str() );
             pEntry = m_pCurrentGroup->AddEntry(strName);
         }
 
-        wxLogTrace( _T("wxFileConfig"),
+        wxLogTrace( FILECONF_TRACE_MASK,
                     _T("  Setting value %s"),
                     szValue.c_str() );
         pEntry->SetValue(szValue);
@@ -1003,7 +1043,9 @@ bool wxFileConfig::Save(wxOutputStream& os, wxMBConv& conv)
     {
         wxString line = p->Text();
         line += wxTextFile::GetEOL();
-        if ( !os.Write(line.mb_str(conv), line.length()) )
+
+        wxCharBuffer buf(line.mb_str(conv));
+        if ( !os.Write(buf, strlen(buf)) )
         {
             wxLogError(_("Error saving user configuration data."));
 
@@ -1025,6 +1067,9 @@ bool wxFileConfig::Save(wxOutputStream& os, wxMBConv& conv)
 bool wxFileConfig::RenameEntry(const wxString& oldName,
                                const wxString& newName)
 {
+    wxASSERT_MSG( !wxStrchr(oldName, wxCONFIG_PATH_SEPARATOR),
+                   _T("RenameEntry(): paths are not supported") );
+
     // check that the entry exists
     wxFileConfigEntry *oldEntry = m_pCurrentGroup->FindEntry(oldName);
     if ( !oldEntry )
@@ -1077,12 +1122,13 @@ bool wxFileConfig::DeleteEntry(const wxString& key, bool bGroupIfEmptyAlso)
   if ( !m_pCurrentGroup->DeleteEntry(path.Name()) )
     return false;
 
+  SetDirty();
+
   if ( bGroupIfEmptyAlso && m_pCurrentGroup->IsEmpty() ) {
     if ( m_pCurrentGroup != m_pRootGroup ) {
       wxFileConfigGroup *pGroup = m_pCurrentGroup;
       SetPath(wxT(".."));  // changes m_pCurrentGroup!
-      if ( m_pCurrentGroup->DeleteSubgroupByName(pGroup->Name()) )
-          SetDirty();
+      m_pCurrentGroup->DeleteSubgroupByName(pGroup->Name());
     }
     //else: never delete the root group
   }
@@ -1106,13 +1152,19 @@ bool wxFileConfig::DeleteAll()
 {
   CleanUp();
 
-  if ( wxFile::Exists(m_strLocalFile) && wxRemove(m_strLocalFile) == -1 )
+  if ( !m_strLocalFile.empty() )
   {
-      wxLogSysError(_("can't delete user configuration file '%s'"), m_strLocalFile.c_str());
-      return false;
+      if ( wxFile::Exists(m_strLocalFile) && wxRemove(m_strLocalFile) == -1 )
+      {
+          wxLogSysError(_("can't delete user configuration file '%s'"),
+                        m_strLocalFile.c_str());
+          return false;
+      }
+
+      m_strLocalFile =
+      m_strGlobalFile = wxEmptyString;
   }
 
-  m_strLocalFile = m_strGlobalFile = wxT("");
   Init();
 
   return true;
@@ -1126,13 +1178,13 @@ bool wxFileConfig::DeleteAll()
 
 wxFileConfigLineList *wxFileConfig::LineListAppend(const wxString& str)
 {
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("    ** Adding Line '%s'"),
                 str.c_str() );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        head: %s"),
                 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        tail: %s"),
                 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
 
@@ -1152,10 +1204,10 @@ wxFileConfigLineList *wxFileConfig::LineListAppend(const wxString& str)
 
     m_linesTail = pLine;
 
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        head: %s"),
                 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        tail: %s"),
                 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
 
@@ -1166,14 +1218,14 @@ wxFileConfigLineList *wxFileConfig::LineListAppend(const wxString& str)
 wxFileConfigLineList *wxFileConfig::LineListInsert(const wxString& str,
                                                    wxFileConfigLineList *pLine)
 {
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("    ** Inserting Line '%s' after '%s'"),
                 str.c_str(),
                 ((pLine) ? pLine->Text().c_str() : wxEmptyString) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        head: %s"),
                 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        tail: %s"),
                 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
 
@@ -1198,10 +1250,10 @@ wxFileConfigLineList *wxFileConfig::LineListInsert(const wxString& str,
         pLine->SetNext(pNewLine);
     }
 
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        head: %s"),
                 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        tail: %s"),
                 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
 
@@ -1210,13 +1262,13 @@ wxFileConfigLineList *wxFileConfig::LineListInsert(const wxString& str,
 
 void wxFileConfig::LineListRemove(wxFileConfigLineList *pLine)
 {
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("    ** Removing Line '%s'"),
                 pLine->Text().c_str() );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        head: %s"),
                 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        tail: %s"),
                 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
 
@@ -1237,10 +1289,13 @@ void wxFileConfig::LineListRemove(wxFileConfigLineList *pLine)
     else
         pNext->SetPrev(pPrev);
 
-    wxLogTrace( _T("wxFileConfig"),
+    if ( m_pRootGroup->GetGroupLine() == pLine )
+        m_pRootGroup->SetLine(m_linesHead);
+
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        head: %s"),
                 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("        tail: %s"),
                 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
 
@@ -1296,7 +1351,11 @@ wxFileConfigGroup::~wxFileConfigGroup()
 
 void wxFileConfigGroup::SetLine(wxFileConfigLineList *pLine)
 {
-    wxASSERT( m_pLine == 0 ); // shouldn't be called twice
+    // for a normal (i.e. not root) group this method shouldn't be called twice
+    // unless we are resetting the line
+    wxASSERT_MSG( !m_pParent || !m_pLine || !pLine,
+                   _T("changing line for a non-root group?") );
+
     m_pLine = pLine;
 }
 
@@ -1336,13 +1395,13 @@ void wxFileConfigGroup::SetLine(wxFileConfigLineList *pLine)
 // have it or in the very beginning if we're the root group.
 wxFileConfigLineList *wxFileConfigGroup::GetGroupLine()
 {
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("  GetGroupLine() for Group '%s'"),
                 Name().c_str() );
 
     if ( !m_pLine )
     {
-        wxLogTrace( _T("wxFileConfig"),
+        wxLogTrace( FILECONF_TRACE_MASK,
                     _T("    Getting Line item pointer") );
 
         wxFileConfigGroup   *pParent = Parent();
@@ -1350,7 +1409,7 @@ wxFileConfigLineList *wxFileConfigGroup::GetGroupLine()
         // this group wasn't present in local config file, add it now
         if ( pParent )
         {
-            wxLogTrace( _T("wxFileConfig"),
+            wxLogTrace( FILECONF_TRACE_MASK,
                         _T("    checking parent '%s'"),
                         pParent->Name().c_str() );
 
@@ -1396,7 +1455,7 @@ wxFileConfigLineList *wxFileConfigGroup::GetLastGroupLine()
 // one immediately after the group line itself.
 wxFileConfigLineList *wxFileConfigGroup::GetLastEntryLine()
 {
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("  GetLastEntryLine() for Group '%s'"),
                 Name().c_str() );
 
@@ -1433,28 +1492,41 @@ void wxFileConfigGroup::SetLastEntry(wxFileConfigEntry *pEntry)
 // group name
 // ----------------------------------------------------------------------------
 
+void wxFileConfigGroup::UpdateGroupAndSubgroupsLines()
+{
+    // update the line of this group
+    wxFileConfigLineList *line = GetGroupLine();
+    wxCHECK_RET( line, _T("a non root group must have a corresponding line!") );
+
+    // +1: skip the leading '/'
+    line->SetText(wxString::Format(_T("[%s]"), GetFullName().c_str() + 1));
+
+
+    // also update all subgroups as they have this groups name in their lines
+    const size_t nCount = m_aSubgroups.Count();
+    for ( size_t n = 0; n < nCount; n++ )
+    {
+        m_aSubgroups[n]->UpdateGroupAndSubgroupsLines();
+    }
+}
+
 void wxFileConfigGroup::Rename(const wxString& newName)
 {
     wxCHECK_RET( m_pParent, _T("the root group can't be renamed") );
 
     m_strName = newName;
 
-    // +1: no leading '/'
-    wxString strFullName;
-    strFullName << wxT("[") << (GetFullName().c_str() + 1) << wxT("]");
-
-    wxFileConfigLineList *line = GetGroupLine();
-    wxCHECK_RET( line, _T("a non root group must have a corresponding line!") );
-
-    line->SetText(strFullName);
+    // update the group lines recursively
+    UpdateGroupAndSubgroupsLines();
 }
 
 wxString wxFileConfigGroup::GetFullName() const
 {
-  if ( Parent() )
-    return Parent()->GetFullName() + wxCONFIG_PATH_SEPARATOR + Name();
-  else
-    return wxT("");
+    wxString fullname;
+    if ( Parent() )
+        fullname = Parent()->GetFullName() + wxCONFIG_PATH_SEPARATOR + Name();
+
+    return fullname;
 }
 
 // ----------------------------------------------------------------------------
@@ -1572,121 +1644,91 @@ bool wxFileConfigGroup::DeleteSubgroup(wxFileConfigGroup *pGroup)
 {
     wxCHECK_MSG( pGroup, false, _T("deleting non existing group?") );
 
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("Deleting group '%s' from '%s'"),
                 pGroup->Name().c_str(),
                 Name().c_str() );
 
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("  (m_pLine) = prev: %p, this %p, next %p"),
                 ((m_pLine) ? m_pLine->Prev() : 0),
                 m_pLine,
                 ((m_pLine) ? m_pLine->Next() : 0) );
-    wxLogTrace( _T("wxFileConfig"),
+    wxLogTrace( FILECONF_TRACE_MASK,
                 _T("  text: '%s'"),
                 ((m_pLine) ? m_pLine->Text().c_str() : wxEmptyString) );
 
-    // delete all entries
+    // delete all entries...
     size_t nCount = pGroup->m_aEntries.Count();
 
-    wxLogTrace(_T("wxFileConfig"),
-               _T("Removing %lu Entries"),
-               (unsigned long)nCount );
+    wxLogTrace(FILECONF_TRACE_MASK,
+               _T("Removing %lu entries"), (unsigned long)nCount );
 
     for ( size_t nEntry = 0; nEntry < nCount; nEntry++ )
     {
-        wxFileConfigLineList    *pLine = pGroup->m_aEntries[nEntry]->GetLine();
+        wxFileConfigLineList *pLine = pGroup->m_aEntries[nEntry]->GetLine();
 
-        if ( pLine != 0 )
+        if ( pLine )
         {
-            wxLogTrace( _T("wxFileConfig"),
+            wxLogTrace( FILECONF_TRACE_MASK,
                         _T("    '%s'"),
                         pLine->Text().c_str() );
             m_pConfig->LineListRemove(pLine);
         }
     }
 
-        // and subgroups of this subgroup
-
+    // ...and subgroups of this subgroup
     nCount = pGroup->m_aSubgroups.Count();
 
-    wxLogTrace( _T("wxFileConfig"),
-                _T("Removing %lu SubGroups"),
-                (unsigned long)nCount );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("Removing %lu subgroups"), (unsigned long)nCount );
 
     for ( size_t nGroup = 0; nGroup < nCount; nGroup++ )
     {
         pGroup->DeleteSubgroup(pGroup->m_aSubgroups[0]);
     }
 
-        // finally the group itself
-
-    wxFileConfigLineList    *pLine = pGroup->m_pLine;
-
-    if ( pLine != 0 )
+    // and then finally the group itself
+    wxFileConfigLineList *pLine = pGroup->m_pLine;
+    if ( pLine )
     {
-        wxLogTrace( _T("wxFileConfig"),
-                    _T("  Removing line entry for Group '%s' : '%s'"),
+        wxLogTrace( FILECONF_TRACE_MASK,
+                    _T("  Removing line for group '%s' : '%s'"),
                     pGroup->Name().c_str(),
                     pLine->Text().c_str() );
-        wxLogTrace( _T("wxFileConfig"),
-                    _T("  Removing from Group '%s' : '%s'"),
+        wxLogTrace( FILECONF_TRACE_MASK,
+                    _T("  Removing from group '%s' : '%s'"),
                     Name().c_str(),
                     ((m_pLine) ? m_pLine->Text().c_str() : wxEmptyString) );
 
-            // notice that we may do this test inside the previous "if"
-            // because the last entry's line is surely !NULL
-
+        // notice that we may do this test inside the previous "if"
+        // because the last entry's line is surely !NULL
         if ( pGroup == m_pLastGroup )
         {
-            wxLogTrace( _T("wxFileConfig"),
-                        _T("  ------- Removing last group -------") );
-
-                // our last entry is being deleted, so find the last one which stays.
-                // go back until we find a subgroup or reach the group's line, unless
-                // we are the root group, which we'll notice shortly.
-
-            wxFileConfigGroup       *pNewLast = 0;
-            size_t                   nSubgroups = m_aSubgroups.Count();
-            wxFileConfigLineList    *pl;
-
-            for ( pl = pLine->Prev(); pl != m_pLine; pl = pl->Prev() )
+            wxLogTrace( FILECONF_TRACE_MASK,
+                        _T("  Removing last group") );
+
+            // our last entry is being deleted, so find the last one which
+            // stays by going back until we find a subgroup or reach the
+            // group line
+            const size_t nSubgroups = m_aSubgroups.Count();
+
+            m_pLastGroup = NULL;
+            for ( wxFileConfigLineList *pl = pLine->Prev();
+                  pl && pl != m_pLine && !m_pLastGroup;
+                  pl = pl->Prev() )
             {
-                    // is it our subgroup?
-
-                for ( size_t n = 0; (pNewLast == 0) && (n < nSubgroups); n++ )
+                // does this line belong to our subgroup?
+                for ( size_t n = 0; n < nSubgroups; n++ )
                 {
-                    // do _not_ call GetGroupLine! we don't want to add it to the local
-                    // file if it's not already there
-
-                    if ( m_aSubgroups[n]->m_pLine == m_pLine )
-                        pNewLast = m_aSubgroups[n];
+                    // do _not_ call GetGroupLine! we don't want to add it to
+                    // the local file if it's not already there
+                    if ( m_aSubgroups[n]->m_pLine == pl )
+                    {
+                        m_pLastGroup = m_aSubgroups[n];
+                        break;
+                    }
                 }
-
-                if ( pNewLast != 0 ) // found?
-                    break;
-            }
-
-            if ( pl == m_pLine || m_pParent == 0 )
-            {
-                wxLogTrace( _T("wxFileConfig"),
-                            _T("  ------- No previous group found -------") );
-
-                wxASSERT_MSG( !pNewLast || m_pLine == 0,
-                              _T("how comes it has the same line as we?") );
-
-                    // we've reached the group line without finding any subgroups,
-                    // or realised we removed the last group from the root.
-
-                m_pLastGroup = 0;
-            }
-            else
-            {
-                wxLogTrace( _T("wxFileConfig"),
-                            _T("  ------- Last Group set to '%s' -------"),
-                            pNewLast->Name().c_str() );
-
-                m_pLastGroup = pNewLast;
             }
         }
 
@@ -1694,7 +1736,7 @@ bool wxFileConfigGroup::DeleteSubgroup(wxFileConfigGroup *pGroup)
     }
     else
     {
-        wxLogTrace( _T("wxFileConfig"),
+        wxLogTrace( FILECONF_TRACE_MASK,
                     _T("  No line entry for Group '%s'?"),
                     pGroup->Name().c_str() );
     }
@@ -1708,7 +1750,11 @@ bool wxFileConfigGroup::DeleteSubgroup(wxFileConfigGroup *pGroup)
 bool wxFileConfigGroup::DeleteEntry(const wxChar *szName)
 {
   wxFileConfigEntry *pEntry = FindEntry(szName);
-  wxCHECK( pEntry != NULL, false );  // deleting non existing item?
+  if ( !pEntry )
+  {
+      // entry doesn't exist, nothing to do
+      return false;
+  }
 
   wxFileConfigLineList *pLine = pEntry->GetLine();
   if ( pLine != NULL ) {
@@ -1764,7 +1810,7 @@ wxFileConfigEntry::wxFileConfigEntry(wxFileConfigGroup *pParent,
                                        int nLine)
                          : m_strName(strName)
 {
-  wxASSERT( !strName.IsEmpty() );
+  wxASSERT( !strName.empty() );
 
   m_pParent = pParent;
   m_nLine   = nLine;
@@ -1833,7 +1879,10 @@ void wxFileConfigEntry::SetValue(const wxString& strValue, bool bUser)
         }
         else // this entry didn't exist in the local file
         {
-            // add a new line to the file
+            // add a new line to the file: note that line returned by
+            // GetLastEntryLine() may be NULL if we're in the root group and it
+            // doesn't have any entries yet, but this is ok as passing NULL
+            // line to LineListInsert() means to prepend new line to the list
             wxFileConfigLineList *line = Group()->GetLastEntryLine();
             m_pLine = Group()->Config()->LineListInsert(strLine, line);
 
@@ -1878,7 +1927,7 @@ static wxString FilterInValue(const wxString& str)
   wxString strResult;
   strResult.Alloc(str.Len());
 
-  bool bQuoted = !str.IsEmpty() && str[0] == '"';
+  bool bQuoted = !str.empty() && str[0] == '"';
 
   for ( size_t n = bQuoted ? 1 : 0; n < str.Len(); n++ ) {
     if ( str[n] == wxT('\\') ) {
@@ -1981,8 +2030,11 @@ static wxString FilterInEntryName(const wxString& str)
   strResult.Alloc(str.Len());
 
   for ( const wxChar *pc = str.c_str(); *pc != '\0'; pc++ ) {
-    if ( *pc == wxT('\\') )
-      pc++;
+    if ( *pc == wxT('\\') ) {
+      // we need to test it here or we'd skip past the NUL in the loop line
+      if ( *++pc == _T('\0') )
+        break;
+    }
 
     strResult += *pc;
   }
@@ -2031,6 +2083,3 @@ static wxString GetAppName(const wxString& appName)
 }
 
 #endif // wxUSE_CONFIG
-
-
-// vi:sts=4:sw=4:et