renamed notebook.cpp to auibook.cpp

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

diff --git a/src/common/fileconf.cpp b/src/common/fileconf.cpp
index b75de3b7c3d6e10533fc82ef95cbdbfae69bbd19..a3bcdb598368d439987bd1c6425a6b74e6a0032c 100644 (file)
--- a/src/common/fileconf.cpp
+++ b/src/common/fileconf.cpp
@@ -1,124 +1,377 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// Name:        fileconf.cpp
+// Name:        src/common/fileconf.cpp

 // Purpose:     implementation of wxFileConfig derivation of wxConfig
 // Author:      Vadim Zeitlin
 // Purpose:     implementation of wxFileConfig derivation of wxConfig
 // Author:      Vadim Zeitlin

-// Modified by: 
+// Modified by:

 // Created:     07.04.98 (adapted from appconf.cpp)
 // RCS-ID:      $Id$
 // Copyright:   (c) 1997 Karsten Ballüder   &  Vadim Zeitlin
 //                       Ballueder@usa.net     <zeitlin@dptmaths.ens-cachan.fr>
 // Created:     07.04.98 (adapted from appconf.cpp)
 // RCS-ID:      $Id$
 // Copyright:   (c) 1997 Karsten Ballüder   &  Vadim Zeitlin
 //                       Ballueder@usa.net     <zeitlin@dptmaths.ens-cachan.fr>

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 ///////////////////////////////////////////////////////////////////////////////
 

-// ============================================================================
-// declarations
-// ============================================================================
-

 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------

+
+// For compilers that support precompilation, includes "wx.h".

 #include  "wx/wxprec.h"
 
 #ifdef    __BORLANDC__
 #include  "wx/wxprec.h"
 
 #ifdef    __BORLANDC__

-  #pragma hdrstop
+    #pragma hdrstop

 #endif  //__BORLANDC__
 
 #endif  //__BORLANDC__
 

+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+

 #ifndef   WX_PRECOMP
 #ifndef   WX_PRECOMP

-  #include  <wx/string.h>
-  #include  <wx/intl.h>
+    #include  "wx/dynarray.h"
+    #include  "wx/string.h"
+    #include  "wx/intl.h"
+    #include  "wx/log.h"
+    #include  "wx/app.h"
+    #include  "wx/utils.h"    // for wxGetHomeDir
+    #if wxUSE_STREAMS
+        #include  "wx/stream.h"
+    #endif // wxUSE_STREAMS

 #endif  //WX_PRECOMP
 
 #endif  //WX_PRECOMP
 

-#include  <wx/dynarray.h>
-#include  <wx/file.h>
-#include  <wx/log.h>
-#include  <wx/textfile.h>
-#include  <wx/config.h>
-#include  <wx/fileconf.h>
-
-// _WINDOWS_ is defined when windows.h is included,
-// __WINDOWS__ is defined for MS Windows compilation
-#if       defined(__WINDOWS__) && !defined(_WINDOWS_)
-  #include  <windows.h>
+#include  "wx/file.h"
+#include  "wx/textfile.h"
+#include  "wx/memtext.h"
+#include  "wx/config.h"
+#include  "wx/fileconf.h"
+#include  "wx/filefn.h"
+
+#if defined(__WXMAC__)
+    #include  "wx/mac/private.h"  // includes mac headers
+    #include  "wx/filename.h"     // for MacSetTypeAndCreator
+#endif
+
+#if defined(__WXMSW__)
+    #include "wx/msw/private.h"

 #endif  //windows.h
 #endif  //windows.h

+#if defined(__WXPM__)
+    #define INCL_DOS
+    #include <os2.h>
+#endif

 
 #include  <stdlib.h>
 #include  <ctype.h>
 
 
 #include  <stdlib.h>
 #include  <ctype.h>
 

+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+#define CONST_CAST ((wxFileConfig *)this)->
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+#ifndef MAX_PATH
+    #define MAX_PATH 512
+#endif
+
+#define FILECONF_TRACE_MASK _T("fileconf")
+

 // ----------------------------------------------------------------------------
 // global functions declarations
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // global functions declarations
 // ----------------------------------------------------------------------------
 

-// is 'c' a valid character in group name?
-// NB: APPCONF_IMMUTABLE_PREFIX and APPCONF_PATH_SEPARATOR must be valid chars,
-//     but _not_ ']' (group name delimiter)
-inline bool IsValid(char c) { return isalnum(c) || strchr("_/-!.*%", c); }
+// compare functions for sorting the arrays
+static int LINKAGEMODE CompareEntries(wxFileConfigEntry *p1, wxFileConfigEntry *p2);
+static int LINKAGEMODE CompareGroups(wxFileConfigGroup *p1, wxFileConfigGroup *p2);

 
 // filter strings
 
 // filter strings

-static wxString FilterIn(const wxString& str);
-static wxString FilterOut(const wxString& str);
+static wxString FilterInValue(const wxString& str);
+static wxString FilterOutValue(const wxString& str);
+
+static wxString FilterInEntryName(const wxString& str);
+static wxString FilterOutEntryName(const wxString& str);
+
+// get the name to use in wxFileConfig ctor
+static wxString GetAppName(const wxString& appname);

 
 // ============================================================================
 
 // ============================================================================

-// implementation
+// private classes

 // ============================================================================
 
 // ----------------------------------------------------------------------------
 // ============================================================================
 
 // ----------------------------------------------------------------------------

-// static functions
+// "template" array types

 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------

-wxString wxFileConfig::GetGlobalFileName(const char *szFile)
+
+#ifdef WXMAKINGDLL_BASE
+    WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(wxFileConfigEntry *, ArrayEntries,
+                                         WXDLLIMPEXP_BASE);
+    WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(wxFileConfigGroup *, ArrayGroups,
+                                         WXDLLIMPEXP_BASE);
+#else
+    WX_DEFINE_SORTED_ARRAY(wxFileConfigEntry *, ArrayEntries);
+    WX_DEFINE_SORTED_ARRAY(wxFileConfigGroup *, ArrayGroups);
+#endif
+
+// ----------------------------------------------------------------------------
+// wxFileConfigLineList
+// ----------------------------------------------------------------------------
+
+// we store all lines of the local config file as a linked list in memory
+class wxFileConfigLineList

 {
 {

-  wxString str;
+public:
+  void SetNext(wxFileConfigLineList *pNext)  { m_pNext = pNext; }
+  void SetPrev(wxFileConfigLineList *pPrev)  { m_pPrev = pPrev; }

 
 

-  bool bNoExt = strchr(szFile, '.') == NULL;
+  // ctor
+  wxFileConfigLineList(const wxString& str,
+                       wxFileConfigLineList *pNext = NULL) : m_strLine(str)
+    { SetNext(pNext); SetPrev(NULL); }

 
 

-  #ifdef  __UNIX__
-    str << "/etc/" << szFile;
-    if ( bNoExt )
-      str << ".conf";
-  #else   // Windows
-    #ifndef _MAX_PATH
-      #define _MAX_PATH 512
-    #endif
+  // next/prev nodes in the linked list
+  wxFileConfigLineList *Next() const { return m_pNext;  }
+  wxFileConfigLineList *Prev() const { return m_pPrev;  }

 
 

-    char szWinDir[_MAX_PATH];
-    ::GetWindowsDirectory(szWinDir, _MAX_PATH);
-    str << szWinDir <<  "\\" << szFile;
-    if ( bNoExt )
-      str << ".ini";
-  #endif  // UNIX/Win
+  // get/change lines text
+  void SetText(const wxString& str) { m_strLine = str;  }
+  const wxString& Text() const { return m_strLine; }

 
 

-  return str;
-}
+private:
+  wxString  m_strLine;                  // line contents
+  wxFileConfigLineList *m_pNext,        // next node
+                       *m_pPrev;        // previous one
+
+    DECLARE_NO_COPY_CLASS(wxFileConfigLineList)
+};

 
 

-wxString wxFileConfig::GetLocalFileName(const char *szFile)
+// ----------------------------------------------------------------------------
+// wxFileConfigEntry: a name/value pair
+// ----------------------------------------------------------------------------
+
+class wxFileConfigEntry
+{
+private:
+  wxFileConfigGroup *m_pParent; // group that contains us
+
+  wxString      m_strName,      // entry name
+                m_strValue;     //       value
+  bool          m_bImmutable:1, // can be overriden locally?
+                m_bHasValue:1;  // set after first call to SetValue()
+
+  int           m_nLine;        // used if m_pLine == NULL only
+
+  // pointer to our line in the linked list or NULL if it was found in global
+  // file (which we don't modify)
+  wxFileConfigLineList *m_pLine;
+
+public:
+  wxFileConfigEntry(wxFileConfigGroup *pParent,
+                    const wxString& strName, int nLine);
+
+  // simple accessors
+  const wxString& Name()        const { return m_strName;    }
+  const wxString& Value()       const { return m_strValue;   }
+  wxFileConfigGroup *Group()    const { return m_pParent;    }
+  bool            IsImmutable() const { return m_bImmutable; }
+  bool            IsLocal()     const { return m_pLine != 0; }
+  int             Line()        const { return m_nLine;      }
+  wxFileConfigLineList *
+                  GetLine()     const { return m_pLine;      }
+
+  // modify entry attributes
+  void SetValue(const wxString& strValue, bool bUser = true);
+  void SetLine(wxFileConfigLineList *pLine);
+
+    DECLARE_NO_COPY_CLASS(wxFileConfigEntry)
+};
+
+// ----------------------------------------------------------------------------
+// wxFileConfigGroup: container of entries and other groups
+// ----------------------------------------------------------------------------
+
+class wxFileConfigGroup

 {
 {

-  wxString str;
+private:
+  wxFileConfig *m_pConfig;          // config object we belong to
+  wxFileConfigGroup  *m_pParent;    // parent group (NULL for root group)
+  ArrayEntries  m_aEntries;         // entries in this group
+  ArrayGroups   m_aSubgroups;       // subgroups
+  wxString      m_strName;          // group's name
+  wxFileConfigLineList *m_pLine;    // pointer to our line in the linked list
+  wxFileConfigEntry *m_pLastEntry;  // last entry/subgroup of this group in the
+  wxFileConfigGroup *m_pLastGroup;  // local file (we insert new ones after it)
+
+  // DeleteSubgroupByName helper
+  bool DeleteSubgroup(wxFileConfigGroup *pGroup);
+
+  // used by Rename()
+  void UpdateGroupAndSubgroupsLines();
+
+public:
+  // ctor
+  wxFileConfigGroup(wxFileConfigGroup *pParent, const wxString& strName, wxFileConfig *);
+
+  // dtor deletes all entries and subgroups also
+  ~wxFileConfigGroup();
+
+  // simple accessors
+  const wxString& Name()    const { return m_strName; }
+  wxFileConfigGroup    *Parent()  const { return m_pParent; }
+  wxFileConfig   *Config()  const { return m_pConfig; }
+
+  const ArrayEntries& Entries() const { return m_aEntries;   }
+  const ArrayGroups&  Groups()  const { return m_aSubgroups; }
+  bool  IsEmpty() const { return Entries().IsEmpty() && Groups().IsEmpty(); }
+
+  // find entry/subgroup (NULL if not found)
+  wxFileConfigGroup *FindSubgroup(const wxChar *szName) const;
+  wxFileConfigEntry *FindEntry   (const wxChar *szName) const;
+
+  // delete entry/subgroup, return false if doesn't exist
+  bool DeleteSubgroupByName(const wxChar *szName);
+  bool DeleteEntry(const wxChar *szName);
+
+  // create new entry/subgroup returning pointer to newly created element
+  wxFileConfigGroup *AddSubgroup(const wxString& strName);
+  wxFileConfigEntry *AddEntry   (const wxString& strName, int nLine = wxNOT_FOUND);
+
+  void SetLine(wxFileConfigLineList *pLine);
+
+  // rename: no checks are done to ensure that the name is unique!
+  void Rename(const wxString& newName);

 
 

-  #ifdef  __UNIX__
-    const char *szHome = getenv("HOME");
-    if ( szHome == NULL ) {
-      // we're homeless...
-      wxLogWarning("can't find user's HOME, using current directory.");
-      szHome = ".";
+  //
+  wxString GetFullName() const;
+
+  // get the last line belonging to an entry/subgroup of this group
+  wxFileConfigLineList *GetGroupLine();     // line which contains [group]
+  wxFileConfigLineList *GetLastEntryLine(); // after which our subgroups start
+  wxFileConfigLineList *GetLastGroupLine(); // after which the next group starts
+
+  // called by entries/subgroups when they're created/deleted
+  void SetLastEntry(wxFileConfigEntry *pEntry);
+  void SetLastGroup(wxFileConfigGroup *pGroup)
+    { m_pLastGroup = pGroup; }
+
+  DECLARE_NO_COPY_CLASS(wxFileConfigGroup)
+};
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// static functions
+// ----------------------------------------------------------------------------
+wxString wxFileConfig::GetGlobalDir()
+{
+  wxString strDir;
+
+#ifdef __VMS__ // Note if __VMS is defined __UNIX is also defined
+    strDir = wxT("sys$manager:");
+#elif defined(__WXMAC__)
+    strDir = wxMacFindFolder(  (short) kOnSystemDisk, kPreferencesFolderType, kDontCreateFolder ) ;
+#elif defined( __UNIX__ )
+    strDir = wxT("/etc/");
+#elif defined(__OS2__)
+    ULONG aulSysInfo[QSV_MAX] = {0};
+    UINT drive;
+    APIRET rc;
+
+    rc = DosQuerySysInfo( 1L, QSV_MAX, (PVOID)aulSysInfo, sizeof(ULONG)*QSV_MAX);
+    if (rc == 0)
+    {
+        drive = aulSysInfo[QSV_BOOT_DRIVE - 1];
+        strDir.Printf(wxT("%c:\\OS2\\"), 'A'+drive-1);

     }
     }

-    str << szHome << "/." << szFile;
-  #else   // Windows
-    #ifdef  __WIN32__
-      const char *szHome = getenv("HOMEDRIVE");
-      if ( szHome != NULL )
-        str << szHome;
-      szHome = getenv("HOMEPATH");
-      if ( szHome != NULL )
-        str << szHome;
-      str << szFile;
-      if ( strchr(szFile, '.') == NULL )
-        str << ".ini";
-    #else   // Win16
-      // Win16 has no idea about home, so use the current directory instead
-      str << ".\\" << szFile;
-    #endif  // WIN16/32
-  #endif  // UNIX/Win
+#elif defined(__WXSTUBS__)
+    wxFAIL_MSG( wxT("TODO") );
+#elif defined(__DOS__)
+    // There's no such thing as global cfg dir in MS-DOS, let's return
+    // current directory (FIXME_MGL?)
+    strDir = wxT(".\\");
+#elif defined(__WXWINCE__)
+    strDir = wxT("\\Windows\\");
+#else // Windows
+
+    wxChar szWinDir[MAX_PATH];
+    ::GetWindowsDirectory(szWinDir, MAX_PATH);
+
+    strDir = szWinDir;
+    strDir << wxT('\\');
+#endif // Unix/Windows
+
+    return strDir;
+}

 
 

-  return str;
+wxString wxFileConfig::GetLocalDir()
+{
+    wxString strDir;
+
+#if defined(__WXMAC__) || defined(__DOS__)
+    // no local dir concept on Mac OS 9 or MS-DOS
+    strDir << GetGlobalDir() ;
+#else
+    wxGetHomeDir(&strDir);
+
+    #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;
+}
+
+wxString wxFileConfig::GetGlobalFileName(const wxChar *szFile)
+{
+    wxString str = GetGlobalDir();
+    str << szFile;
+
+    if ( wxStrchr(szFile, wxT('.')) == NULL )
+#if defined( __WXMAC__ )
+        str << wxT(" Preferences") ;
+#elif defined( __UNIX__ )
+        str << wxT(".conf");
+#else   // Windows
+        str << wxT(".ini");
+#endif  // UNIX/Win
+
+    return str;
+}
+
+wxString wxFileConfig::GetLocalFileName(const wxChar *szFile)
+{
+#ifdef __VMS__
+    // On VMS I saw the problem that the home directory was appended
+    // twice for the configuration file. Does that also happen for
+    // other platforms?
+    wxString str = wxT( '.' );
+#else
+    wxString str = GetLocalDir();
+#endif
+
+#if defined( __UNIX__ ) && !defined( __VMS ) && !defined( __WXMAC__ )
+    str << wxT('.');
+#endif
+
+    str << szFile;
+
+#if defined(__WINDOWS__) || defined(__DOS__)
+    if ( wxStrchr(szFile, wxT('.')) == NULL )
+        str << wxT(".ini");
+#endif
+
+#ifdef __WXMAC__
+    str << wxT(" Preferences") ;
+#endif
+
+    return str;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -127,155 +380,333 @@ wxString wxFileConfig::GetLocalFileName(const char *szFile)
 
 void wxFileConfig::Init()
 {
 
 void wxFileConfig::Init()
 {

-  m_pCurrentGroup = 
-  m_pRootGroup    = new ConfigGroup(NULL, "", this);
+    m_pCurrentGroup =
+    m_pRootGroup    = new wxFileConfigGroup(NULL, wxEmptyString, this);
+
+    m_linesHead =
+    m_linesTail = NULL;

 
 

-  m_linesHead =
-  m_linesTail = NULL;
+    // It's not an error if (one of the) file(s) doesn't exist.

 
 

-  m_bExpandEnvVars = TRUE;
+    // parse the global file
+    if ( !m_strGlobalFile.empty() && wxFile::Exists(m_strGlobalFile) )
+    {
+        wxTextFile fileGlobal(m_strGlobalFile);

 
 

-  m_strPath.Empty();
+        if ( fileGlobal.Open(*m_conv/*ignored in ANSI build*/) )
+        {
+            Parse(fileGlobal, false /* global */);
+            SetRootPath();
+        }
+        else
+        {
+            wxLogWarning(_("can't open global configuration file '%s'."), m_strGlobalFile.c_str());
+        }
+    }
+
+    // parse the local file
+    if ( !m_strLocalFile.empty() && wxFile::Exists(m_strLocalFile) )
+    {
+        wxTextFile fileLocal(m_strLocalFile);
+        if ( fileLocal.Open(*m_conv/*ignored in ANSI build*/) )
+        {
+            Parse(fileLocal, true /* local */);
+            SetRootPath();
+        }
+        else
+        {
+            wxLogWarning(_("can't open user configuration file '%s'."),  m_strLocalFile.c_str() );
+        }
+    }
+
+    m_isDirty = false;

 }
 
 }
 

-wxFileConfig::wxFileConfig(const wxString& strLocal, const wxString& strGlobal)
-            : m_strLocalFile(strLocal), m_strGlobalFile(strGlobal)
+// constructor supports creation of wxFileConfig objects of any type
+wxFileConfig::wxFileConfig(const wxString& appName, const wxString& vendorName,
+                           const wxString& strLocal, const wxString& strGlobal,
+                           long style,
+                           const wxMBConv& conv)
+            : wxConfigBase(::GetAppName(appName), vendorName,
+                           strLocal, strGlobal,
+                           style),
+              m_strLocalFile(strLocal), m_strGlobalFile(strGlobal),
+              m_conv(conv.Clone())

 {
 {

-  Init();
+    // Make up names for files if empty
+    if ( m_strLocalFile.empty() && (style & wxCONFIG_USE_LOCAL_FILE) )
+        m_strLocalFile = GetLocalFileName(GetAppName());
+
+    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.empty() )
+        SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
+
+    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.empty() && !wxIsAbsolutePath(m_strLocalFile) )
+        {
+            const wxString strLocalOrig = m_strLocalFile;
+            m_strLocalFile = GetLocalDir();
+            m_strLocalFile << strLocalOrig;
+        }

 
 

-  // it's not an error if (one of the) file(s) doesn't exist
+        if ( !m_strGlobalFile.empty() && !wxIsAbsolutePath(m_strGlobalFile) )
+        {
+            const wxString strGlobalOrig = m_strGlobalFile;
+            m_strGlobalFile = GetGlobalDir();
+            m_strGlobalFile << strGlobalOrig;
+        }
+    }

 
 

-  // parse the global file
-  if ( !strGlobal.IsEmpty() ) {
-    if ( wxFile::Exists(strGlobal) ) {
-      wxTextFile fileGlobal(strGlobal);
+    SetUmask(-1);

 
 

-      if ( fileGlobal.Open() ) {
-        Parse(fileGlobal, FALSE /* global */);
-        SetRootPath();
-      }
-      else
-        wxLogWarning("Can't open global configuration file '%s'.",
-                     strGlobal.c_str());
+    Init();
+}
+
+#if wxUSE_STREAMS
+
+wxFileConfig::wxFileConfig(wxInputStream &inStream, const wxMBConv& conv)
+            : m_conv(conv.Clone())
+{
+    // always local_file when this constructor is called (?)
+    SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
+
+    m_pCurrentGroup =
+    m_pRootGroup    = new wxFileConfigGroup(NULL, wxEmptyString, this);
+
+    m_linesHead =
+    m_linesTail = NULL;
+
+    // translate everything to the current (platform-dependent) line
+    // termination character
+    wxString strTrans;
+    {
+        wxString strTmp;
+
+        char buf[1024];
+        do
+        {
+            inStream.Read(buf, WXSIZEOF(buf)-1);  // leave room for the NULL
+
+            const wxStreamError err = inStream.GetLastError();
+
+            if ( err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF )
+            {
+                wxLogError(_("Error reading config options."));
+                break;
+            }
+
+            // 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() );
+
+        strTrans = wxTextBuffer::Translate(strTmp);

     }
     }

-  }

 
 

-  // parse the local file
-  if ( wxFile::Exists(strLocal) ) {
-    wxTextFile fileLocal(strLocal);
-    if ( fileLocal.Open() ) {
-      Parse(fileLocal, TRUE /* local */);
-      SetRootPath();
+    wxMemoryText memText;
+
+    // Now we can add the text to the memory text. To do this we extract line
+    // by line from the translated string, until we've reached the end.
+    //
+    // VZ: all this is horribly inefficient, we should do the translation on
+    //     the fly in one pass saving both memory and time (TODO)
+
+    const wxChar *pEOL = wxTextBuffer::GetEOL(wxTextBuffer::typeDefault);
+    const size_t EOLLen = wxStrlen(pEOL);
+
+    int posLineStart = strTrans.Find(pEOL);
+    while ( posLineStart != -1 )
+    {
+        wxString line(strTrans.Left(posLineStart));
+
+        memText.AddLine(line);
+
+        strTrans = strTrans.Mid(posLineStart + EOLLen);
+
+        posLineStart = strTrans.Find(pEOL);
+    }
+
+    // also add whatever we have left in the translated string.
+    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;
+
+    wxFileConfigLineList *pCur = m_linesHead;
+    while ( pCur != NULL ) {
+        wxFileConfigLineList *pNext = pCur->Next();
+        delete pCur;
+        pCur = pNext;

     }
     }

-    else
-      wxLogWarning("Can't open user configuration file '%s'.",
-                   strLocal.c_str());
-  }

 }
 
 wxFileConfig::~wxFileConfig()
 {
 }
 
 wxFileConfig::~wxFileConfig()
 {

-  Flush();
-  delete m_pRootGroup;
+    Flush();
+
+    CleanUp();
+
+    delete m_conv;

 }
 
 // ----------------------------------------------------------------------------
 // parse a config file
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // parse a config file
 // ----------------------------------------------------------------------------
 

-void wxFileConfig::Parse(wxTextFile& file, bool bLocal)
+void wxFileConfig::Parse(const wxTextBuffer& buffer, bool bLocal)

 {
 {

-  const char *pStart;
-  const char *pEnd;
-  
-  for ( uint n = 0; n < file.GetLineCount(); n++ ) {
+  const wxChar *pStart;
+  const wxChar *pEnd;
+  wxString strLine;
+
+  size_t nLineCount = buffer.GetLineCount();
+
+  for ( size_t n = 0; n < nLineCount; n++ )
+  {
+    strLine = buffer[n];
+

     // add the line to linked list
     if ( bLocal )
     // add the line to linked list
     if ( bLocal )

-      LineListAppend(file[n]);
+    {
+      LineListAppend(strLine);
+
+      // let the root group have its start line as well
+      if ( !n )
+      {
+        m_pCurrentGroup->SetLine(m_linesTail);
+      }
+    }
+

 
     // skip leading spaces
 
     // skip leading spaces

-    for ( pStart = file[n]; isspace(*pStart); pStart++ )
+    for ( pStart = strLine; wxIsspace(*pStart); pStart++ )

       ;
 
     // skip blank/comment lines
       ;
 
     // skip blank/comment lines

-    if ( *pStart == '\0'|| *pStart == ';' || *pStart == '#' )
+    if ( *pStart == wxT('\0')|| *pStart == wxT(';') || *pStart == wxT('#') )

       continue;
 
       continue;
 

-    if ( *pStart == '[' ) {          // a new group
+    if ( *pStart == wxT('[') ) {          // a new group

       pEnd = pStart;
 
       pEnd = pStart;
 

-      while ( *++pEnd != ']' ) {
-        if ( !IsValid(*pEnd) && *pEnd != ' ' )  // allow spaces in group names
-          break;
+      while ( *++pEnd != wxT(']') ) {
+        if ( *pEnd == wxT('\\') ) {
+            // the next char is escaped, so skip it even if it is ']'
+            pEnd++;
+        }
+
+        if ( *pEnd == wxT('\n') || *pEnd == wxT('\0') ) {
+            // we reached the end of line, break out of the loop
+            break;
+        }

       }
 
       }
 

-      if ( *pEnd != ']' ) {
-        wxLogError("file '%s': unexpected character at line %d (missing ']'?)",
-                   file.GetName(), n + 1);
+      if ( *pEnd != wxT(']') ) {
+        wxLogError(_("file '%s': unexpected character %c at line %d."),
+                   buffer.GetName(), *pEnd, n + 1);

         continue; // skip this line
       }
 
       // group name here is always considered as abs path
       wxString strGroup;
       pStart++;
         continue; // skip this line
       }
 
       // group name here is always considered as abs path
       wxString strGroup;
       pStart++;

-      strGroup << APPCONF_PATH_SEPARATOR << wxString(pStart, pEnd - pStart);
+      strGroup << wxCONFIG_PATH_SEPARATOR
+               << FilterInEntryName(wxString(pStart, pEnd - pStart));

 
       // will create it if doesn't yet exist
       SetPath(strGroup);
 
       if ( bLocal )
 
       // will create it if doesn't yet exist
       SetPath(strGroup);
 
       if ( bLocal )

+      {
+        if ( m_pCurrentGroup->Parent() )
+          m_pCurrentGroup->Parent()->SetLastGroup(m_pCurrentGroup);

         m_pCurrentGroup->SetLine(m_linesTail);
         m_pCurrentGroup->SetLine(m_linesTail);

+      }

 
       // check that there is nothing except comments left on this line
 
       // check that there is nothing except comments left on this line

-      bool bCont = TRUE;
-      while ( *++pEnd != '\0' && bCont ) {
+      bool bCont = true;
+      while ( *++pEnd != wxT('\0') && bCont ) {

         switch ( *pEnd ) {
         switch ( *pEnd ) {

-          case '#':
-          case ';':
-            bCont = FALSE;
+          case wxT('#'):
+          case wxT(';'):
+            bCont = false;

             break;
             break;

-        
-          case ' ':
-          case '\t':
+
+          case wxT(' '):
+          case wxT('\t'):

             // ignore whitespace ('\n' impossible here)
             break;
             // ignore whitespace ('\n' impossible here)
             break;

-          
+

           default:
           default:

-            wxLogWarning("file '%s', line %d: '%s' ignored after group header.",
-                         file.GetName(), n + 1, pEnd);
-            bCont = FALSE;
+            wxLogWarning(_("file '%s', line %d: '%s' ignored after group header."),
+                         buffer.GetName(), n + 1, pEnd);
+            bCont = false;

         }
       }
     }
     else {                        // a key
         }
       }
     }
     else {                        // a key

-      const char *pEnd = pStart;
-      while ( IsValid(*pEnd) )
+      pEnd = pStart;
+      while ( *pEnd && *pEnd != wxT('=') /* && !wxIsspace(*pEnd)*/ ) {
+        if ( *pEnd == wxT('\\') ) {
+          // next character may be space or not - still take it because it's
+          // quoted (unless there is nothing)
+          pEnd++;
+          if ( !*pEnd ) {
+            // the error message will be given below anyhow
+            break;
+          }
+        }
+

         pEnd++;
         pEnd++;

+      }

 
 

-      wxString strKey(pStart, pEnd);
+      wxString strKey(FilterInEntryName(wxString(pStart, pEnd).Trim()));

 
       // skip whitespace
 
       // skip whitespace

-      while ( isspace(*pEnd) ) 
+      while ( wxIsspace(*pEnd) )

         pEnd++;
 
         pEnd++;
 

-      if ( *pEnd++ != '=' ) {
-        wxLogError("file '%s', line %d: '=' expected.", file.GetName(), n + 1);
+      if ( *pEnd++ != wxT('=') ) {
+        wxLogError(_("file '%s', line %d: '=' expected."),
+                   buffer.GetName(), n + 1);

       }
       else {
       }
       else {

-        ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strKey);
+        wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strKey);

 
         if ( pEntry == NULL ) {
           // new entry
           pEntry = m_pCurrentGroup->AddEntry(strKey, n);
 
         if ( pEntry == NULL ) {
           // new entry
           pEntry = m_pCurrentGroup->AddEntry(strKey, n);

-
-          if ( bLocal )
-            pEntry->SetLine(m_linesTail);

         }
         else {
           if ( bLocal && pEntry->IsImmutable() ) {
             // immutable keys can't be changed by user
         }
         else {
           if ( bLocal && pEntry->IsImmutable() ) {
             // immutable keys can't be changed by user

-            wxLogWarning("file '%s', line %d: value for immutable key '%s' ignored.",
-                         file.GetName(), n + 1, strKey.c_str());
+            wxLogWarning(_("file '%s', line %d: value for immutable key '%s' ignored."),
+                         buffer.GetName(), n + 1, strKey.c_str());

             continue;
           }
           // the condition below catches the cases (a) and (b) but not (c):
             continue;
           }
           // the condition below catches the cases (a) and (b) but not (c):


@@ -284,24 +715,24 @@ void wxFileConfig::Parse(wxTextFile& file, bool bLocal)
           //  (c) key from global file now found in local one
           // which is exactly what we want.
           else if ( !bLocal || pEntry->IsLocal() ) {
           //  (c) key from global file now found in local one
           // which is exactly what we want.
           else if ( !bLocal || pEntry->IsLocal() ) {

-            wxLogWarning("file '%s', line %d: key '%s' was first found at line %d.", 
-                         file.GetName(), n + 1, strKey.c_str(), pEntry->Line());
+            wxLogWarning(_("file '%s', line %d: key '%s' was first found at line %d."),
+                         buffer.GetName(), n + 1, strKey.c_str(), pEntry->Line());

 
 

-            if ( bLocal )
-              pEntry->SetLine(m_linesTail);

           }
         }
 
           }
         }
 

+        if ( bLocal )
+          pEntry->SetLine(m_linesTail);
+

         // skip whitespace
         // skip whitespace

-        while ( isspace(*pEnd) ) 
+        while ( wxIsspace(*pEnd) )

           pEnd++;
 
           pEnd++;
 

-        wxString strValue;
-        if (m_bExpandEnvVars)
-            strValue = ExpandEnvVars(FilterIn(pEnd));
-        else
-            strValue = FilterIn(pEnd);
-        pEntry->SetValue(strValue, FALSE);
+        wxString value = pEnd;
+        if ( !(GetStyle() & wxCONFIG_USE_NO_ESCAPE_CHARACTERS) )
+            value = FilterInValue(value);
+
+        pEntry->SetValue(value, false);

       }
     }
   }
       }
     }
   }


@@ -313,263 +744,604 @@ void wxFileConfig::Parse(wxTextFile& file, bool bLocal)
 
 void wxFileConfig::SetRootPath()
 {
 
 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() )
-    return;
+    if ( strPath.empty() ) {
+        SetRootPath();
+        return true;
+    }

 
 

-  if ( strPath[0] == APPCONF_PATH_SEPARATOR ) {
-    // absolute path
-    SplitPath(aParts, strPath);
-  }
-  else {
-    // relative path, combine with current one
-    wxString strFullPath = m_strPath;
-    strFullPath << APPCONF_PATH_SEPARATOR << strPath;
-    SplitPath(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
-  uint n;
-  m_pCurrentGroup = m_pRootGroup;
-  for ( n = 0; n < aParts.Count(); n++ ) {
-    ConfigGroup *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;
+
+            pNextGroup = m_pCurrentGroup->AddSubgroup(aParts[n]);
+        }

 
 

-  // recombine path parts in one variable
-  m_strPath.Empty();
-  for ( n = 0; n < aParts.Count(); n++ ) {
-    m_strPath << APPCONF_PATH_SEPARATOR << 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 */);

 }
 
 // ----------------------------------------------------------------------------
 // enumeration
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // enumeration
 // ----------------------------------------------------------------------------
 

-bool wxFileConfig::GetFirstGroup(wxString& str, long& lIndex)
+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)
+bool wxFileConfig::GetNextGroup (wxString& str, long& lIndex) const

 {
 {

-  if ( uint(lIndex) < m_pCurrentGroup->Groups().Count() ) {
-    str = m_pCurrentGroup->Groups()[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)
+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)
+bool wxFileConfig::GetNextEntry (wxString& str, long& lIndex) const

 {
 {

-  if ( uint(lIndex) < m_pCurrentGroup->Entries().Count() ) {
-    str = m_pCurrentGroup->Entries()[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;
+        }
+    }
+
+    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;
+        }
+    }
+
+    return n;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// read/write values
+// tests for existence

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-const char *wxFileConfig::Read(const char *szKey,
-                               const char *szDefault) const
+bool wxFileConfig::HasGroup(const wxString& strName) const

 {
 {

-  PathChanger path(this, szKey);
+    // 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 */);

 
 

-  ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
-  return pEntry == NULL ? szDefault : pEntry->Value().c_str();
+    self->SetPath(pathOld);
+
+    return rc;

 }
 
 }
 

-bool wxFileConfig::Read(wxString   *pstr,
-                        const char *szKey,
-                        const char *szDefault) const
+bool wxFileConfig::HasEntry(const wxString& entry) const

 {
 {

-  PathChanger path(this, szKey);
+    // path is the part before the last "/"
+    wxString path = entry.BeforeLast(wxCONFIG_PATH_SEPARATOR);

 
 

-  ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
-  if (pEntry == NULL) {
-    *pstr = szDefault;
-    return FALSE;
-  }
-  else {
-    *pstr = pEntry->Value();
-    return TRUE;
-  }
+    // except in the special case of "/keyname" when there is nothing before "/"
+    if ( path.empty() && *entry.c_str() == wxCONFIG_PATH_SEPARATOR )
+    {
+        path = wxCONFIG_PATH_SEPARATOR;
+    }
+
+    // change to the path of the entry if necessary and remember the old path
+    // to restore it later
+    wxString pathOld;
+    wxFileConfig * const self = wx_const_cast(wxFileConfig *, this);
+    if ( !path.empty() )
+    {
+        pathOld = GetPath();
+        if ( pathOld.empty() )
+            pathOld = wxCONFIG_PATH_SEPARATOR;
+
+        if ( !self->DoSetPath(path, false /* don't create if doesn't exist */) )
+        {
+            return false;
+        }
+    }
+
+    // check if the entry exists in this group
+    const bool exists = m_pCurrentGroup->FindEntry(
+                            entry.AfterLast(wxCONFIG_PATH_SEPARATOR)) != NULL;
+
+    // restore the old path if we changed it above
+    if ( !pathOld.empty() )
+    {
+        self->SetPath(pathOld);
+    }
+
+    return exists;
+}
+
+// ----------------------------------------------------------------------------
+// read/write values
+// ----------------------------------------------------------------------------
+
+bool wxFileConfig::DoReadString(const wxString& key, wxString* pStr) const
+{
+    wxConfigPathChanger path(this, key);
+
+    wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
+    if (pEntry == NULL) {
+        return false;
+    }
+
+    *pStr = pEntry->Value();
+
+    return true;

 }
 
 }
 

-bool wxFileConfig::Read(long *pl, const char *szKey, long lDefault) const
+bool wxFileConfig::DoReadLong(const wxString& key, long *pl) const

 {
 {

-  wxString str;
-  if ( Read(&str, szKey) ) {
-    *pl = atol(str);
-    return TRUE;
-  }
-  else {
-    *pl = lDefault;
-    return FALSE;
-  }
+    wxString str;
+    if ( !Read(key, &str) )
+        return false;
+
+    // extra spaces shouldn't prevent us from reading numeric values
+    str.Trim();
+
+    return str.ToLong(pl);

 }
 
 }
 

-bool wxFileConfig::Write(const char *szKey, const char *szValue)
+bool wxFileConfig::DoWriteString(const wxString& key, const wxString& szValue)

 {
 {

-  PathChanger path(this, szKey);
+    wxConfigPathChanger     path(this, key);
+    wxString                strName = path.Name();

 
 

-  ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
-  if ( pEntry == NULL )
-    pEntry = m_pCurrentGroup->AddEntry(path.Name());
-  pEntry->SetValue(szValue);
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("  Writing String '%s' = '%s' to Group '%s'"),
+                strName.c_str(),
+                szValue.c_str(),
+                GetPath().c_str() );

 
 

-  return TRUE;
+    if ( strName.empty() )
+    {
+            // setting the value of a group is an error
+
+        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( FILECONF_TRACE_MASK,
+                    _T("  Creating group %s"),
+                    m_pCurrentGroup->Name().c_str() );
+
+        SetDirty();
+
+            // this will add a line for this group if it didn't have it before
+
+        (void)m_pCurrentGroup->GetGroupLine();
+    }
+    else
+    {
+        // writing an entry check that the name is reasonable
+        if ( strName[0u] == wxCONFIG_IMMUTABLE_PREFIX )
+        {
+            wxLogError( _("Config entry name cannot start with '%c'."),
+                        wxCONFIG_IMMUTABLE_PREFIX);
+            return false;
+        }
+
+        wxFileConfigEntry   *pEntry = m_pCurrentGroup->FindEntry(strName);
+
+        if ( pEntry == 0 )
+        {
+            wxLogTrace( FILECONF_TRACE_MASK,
+                        _T("  Adding Entry %s"),
+                        strName.c_str() );
+            pEntry = m_pCurrentGroup->AddEntry(strName);
+        }
+
+        wxLogTrace( FILECONF_TRACE_MASK,
+                    _T("  Setting value %s"),
+                    szValue.c_str() );
+        pEntry->SetValue(szValue);
+
+        SetDirty();
+    }
+
+    return true;

 }
 
 }
 

-bool wxFileConfig::Write(const char *szKey, long lValue)
+bool wxFileConfig::DoWriteLong(const wxString& key, long lValue)

 {
 {

-  // ltoa() is not ANSI :-(
-  char szBuf[40];   // should be good for sizeof(long) <= 16 (128 bits)
-  sprintf(szBuf, "%ld", lValue);
-  return Write(szKey, szBuf);
+  return Write(key, wxString::Format(_T("%ld"), lValue));

 }
 
 bool wxFileConfig::Flush(bool /* bCurrentOnly */)
 {
 }
 
 bool wxFileConfig::Flush(bool /* bCurrentOnly */)
 {

-  if ( LineListIsEmpty() || !m_pRootGroup->IsDirty() )
-    return TRUE;
+  if ( !IsDirty() || !m_strLocalFile )
+    return true;
+
+  // set the umask if needed
+  wxCHANGE_UMASK(m_umask);

 
   wxTempFile file(m_strLocalFile);
 
 
   wxTempFile file(m_strLocalFile);
 

-  if ( !file.IsOpened() ) {
-    wxLogError("Can't open user configuration file.");
-    return FALSE;
+  if ( !file.IsOpened() )
+  {
+    wxLogError(_("can't open user configuration file."));
+    return false;

   }
 
   // write all strings to file
   }
 
   // write all strings to file

-  for ( LineList *p = m_linesHead; p != NULL; p = p->Next() ) {
-    if ( !file.Write(p->Text() + wxTextFile::GetEOL()) ) {
-      wxLogError("Can't write user configuration file.");
-      return FALSE;
+  for ( wxFileConfigLineList *p = m_linesHead; p != NULL; p = p->Next() )
+  {
+    wxString line = p->Text();
+    line += wxTextFile::GetEOL();
+    if ( !file.Write(line, *m_conv) )
+    {
+      wxLogError(_("can't write user configuration file."));
+      return false;

     }
   }
 
     }
   }
 

-  return file.Commit();
+  if ( !file.Commit() )
+  {
+      wxLogError(_("Failed to update user configuration file."));
+
+      return false;
+  }
+
+  ResetDirty();
+
+#if defined(__WXMAC__)
+  wxFileName(m_strLocalFile).MacSetTypeAndCreator('TEXT', 'ttxt');
+#endif // __WXMAC__
+
+  return true;
+}
+
+#if wxUSE_STREAMS
+
+bool wxFileConfig::Save(wxOutputStream& os, const wxMBConv& conv)
+{
+    // save unconditionally, even if not dirty
+    for ( wxFileConfigLineList *p = m_linesHead; p != NULL; p = p->Next() )
+    {
+        wxString line = p->Text();
+        line += wxTextFile::GetEOL();
+
+        wxCharBuffer buf(line.mb_str(conv));
+        if ( !os.Write(buf, strlen(buf)) )
+        {
+            wxLogError(_("Error saving user configuration data."));
+
+            return false;
+        }
+    }
+
+    ResetDirty();
+
+    return true;
+}
+
+#endif // wxUSE_STREAMS
+
+// ----------------------------------------------------------------------------
+// renaming groups/entries
+// ----------------------------------------------------------------------------
+
+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 )
+        return false;
+
+    // check that the new entry doesn't already exist
+    if ( m_pCurrentGroup->FindEntry(newName) )
+        return false;
+
+    // delete the old entry, create the new one
+    wxString value = oldEntry->Value();
+    if ( !m_pCurrentGroup->DeleteEntry(oldName) )
+        return false;
+
+    SetDirty();
+
+    wxFileConfigEntry *newEntry = m_pCurrentGroup->AddEntry(newName);
+    newEntry->SetValue(value);
+
+    return true;
+}
+
+bool wxFileConfig::RenameGroup(const wxString& oldName,
+                               const wxString& newName)
+{
+    // check that the group exists
+    wxFileConfigGroup *group = m_pCurrentGroup->FindSubgroup(oldName);
+    if ( !group )
+        return false;
+
+    // check that the new group doesn't already exist
+    if ( m_pCurrentGroup->FindSubgroup(newName) )
+        return false;
+
+    group->Rename(newName);
+
+    SetDirty();
+
+    return true;

 }
 
 // ----------------------------------------------------------------------------
 // delete groups/entries
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // delete groups/entries
 // ----------------------------------------------------------------------------
 

-bool wxFileConfig::DeleteEntry(const char *szKey, bool bGroupIfEmptyAlso)
+bool wxFileConfig::DeleteEntry(const wxString& key, bool bGroupIfEmptyAlso)

 {
 {

-  PathChanger path(this, szKey);
+  wxConfigPathChanger path(this, key);

 
   if ( !m_pCurrentGroup->DeleteEntry(path.Name()) )
 
   if ( !m_pCurrentGroup->DeleteEntry(path.Name()) )

-    return FALSE;
+    return false;
+
+  SetDirty();

 
   if ( bGroupIfEmptyAlso && m_pCurrentGroup->IsEmpty() ) {
     if ( m_pCurrentGroup != m_pRootGroup ) {
 
   if ( bGroupIfEmptyAlso && m_pCurrentGroup->IsEmpty() ) {
     if ( m_pCurrentGroup != m_pRootGroup ) {

-      ConfigGroup *pGroup = m_pCurrentGroup;
-      SetPath("..");  // changes m_pCurrentGroup!
-      m_pCurrentGroup->DeleteSubgroup(pGroup->Name());
+      wxFileConfigGroup *pGroup = m_pCurrentGroup;
+      SetPath(wxT(".."));  // changes m_pCurrentGroup!
+      m_pCurrentGroup->DeleteSubgroupByName(pGroup->Name());

     }
     //else: never delete the root group
   }
 
     }
     //else: never delete the root group
   }
 

-  return TRUE;
+  return true;

 }
 
 }
 

-bool wxFileConfig::DeleteGroup(const char *szKey)
+bool wxFileConfig::DeleteGroup(const wxString& key)

 {
 {

-  PathChanger path(this, szKey);
+  wxConfigPathChanger path(this, key);

 
 

-  return m_pCurrentGroup->DeleteSubgroup(path.Name());
+  if ( !m_pCurrentGroup->DeleteSubgroupByName(path.Name()) )
+      return false;
+
+  path.UpdateIfDeleted();
+
+  SetDirty();
+
+  return true;

 }
 
 bool wxFileConfig::DeleteAll()
 {
 }
 
 bool wxFileConfig::DeleteAll()
 {

-  const char *szFile = m_strLocalFile;
-  delete m_pRootGroup;
-  Init();
-
-  if ( remove(szFile) == -1 )
-    wxLogSysError("Can't delete user configuration file '%s'", szFile);
+  CleanUp();
+
+  if ( !m_strLocalFile.empty() )
+  {
+      if ( wxFile::Exists(m_strLocalFile) && wxRemove(m_strLocalFile) == -1 )
+      {
+          wxLogSysError(_("can't delete user configuration file '%s'"),
+                        m_strLocalFile.c_str());
+          return false;
+      }
+  }

 
 

-  szFile = m_strGlobalFile;
-  if ( remove(szFile) )
-    wxLogSysError("Can't delete system configuration file '%s'", szFile);
+  Init();

 
 

-  return TRUE;
+  return true;

 }
 
 // ----------------------------------------------------------------------------
 // linked list functions
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // linked list functions
 // ----------------------------------------------------------------------------
 

-// append a new line to the end of the list
-wxFileConfig::LineList *wxFileConfig::LineListAppend(const wxString& str)
+    // append a new line to the end of the list
+
+wxFileConfigLineList *wxFileConfig::LineListAppend(const wxString& str)

 {
 {

-  LineList *pLine = new LineList(str);
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("    ** Adding Line '%s'"),
+                str.c_str() );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        head: %s"),
+                ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        tail: %s"),
+                ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
+
+    wxFileConfigLineList *pLine = new wxFileConfigLineList(str);
+
+    if ( m_linesTail == NULL )
+    {
+        // list is empty
+        m_linesHead = pLine;
+    }
+    else
+    {
+        // adjust pointers
+        m_linesTail->SetNext(pLine);
+        pLine->SetPrev(m_linesTail);
+    }

 
 

-  if ( m_linesTail == NULL ) {
-    // list is empty
-    m_linesHead = pLine;
-  }
-  else {
-    // adjust pointers
-    m_linesTail->SetNext(pLine);
-  }
+    m_linesTail = pLine;

 
 

-  m_linesTail = pLine;
-  return m_linesTail;
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        head: %s"),
+                ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        tail: %s"),
+                ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
+
+    return m_linesTail;

 }
 
 // insert a new line after the given one or in the very beginning if !pLine
 }
 
 // insert a new line after the given one or in the very beginning if !pLine

-wxFileConfig::LineList *wxFileConfig::LineListInsert(const wxString& str, 
-                                                     LineList *pLine)
+wxFileConfigLineList *wxFileConfig::LineListInsert(const wxString& str,
+                                                   wxFileConfigLineList *pLine)

 {
 {

-  if ( pLine == m_linesTail )
-    return LineListAppend(str);
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("    ** Inserting Line '%s' after '%s'"),
+                str.c_str(),
+                ((pLine) ? pLine->Text().c_str() : wxEmptyString) );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        head: %s"),
+                ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        tail: %s"),
+                ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
+
+    if ( pLine == m_linesTail )
+        return LineListAppend(str);
+
+    wxFileConfigLineList *pNewLine = new wxFileConfigLineList(str);
+    if ( pLine == NULL )
+    {
+        // prepend to the list
+        pNewLine->SetNext(m_linesHead);
+        m_linesHead->SetPrev(pNewLine);
+        m_linesHead = pNewLine;
+    }
+    else
+    {
+        // insert before pLine
+        wxFileConfigLineList *pNext = pLine->Next();
+        pNewLine->SetNext(pNext);
+        pNewLine->SetPrev(pLine);
+        pNext->SetPrev(pNewLine);
+        pLine->SetNext(pNewLine);
+    }

 
 

-  LineList *pNewLine;
-  
-  if ( pLine == NULL ) {
-    pNewLine = new LineList(str, m_linesHead);
-    m_linesHead = pNewLine;
-  }
-  else {
-    pNewLine = new LineList(str, pLine->Next());
-    pLine->SetNext(pNewLine);
-  }
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        head: %s"),
+                ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        tail: %s"),
+                ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );

 
 

-  return pNewLine;
+    return pNewLine;
+}
+
+void wxFileConfig::LineListRemove(wxFileConfigLineList *pLine)
+{
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("    ** Removing Line '%s'"),
+                pLine->Text().c_str() );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        head: %s"),
+                ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("        tail: %s"),
+                ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
+
+    wxFileConfigLineList    *pPrev = pLine->Prev(),
+                            *pNext = pLine->Next();
+
+        // first entry?
+
+    if ( pPrev == NULL )
+        m_linesHead = pNext;
+    else
+        pPrev->SetNext(pNext);
+
+        // last entry?
+
+    if ( pNext == NULL )
+        m_linesTail = pPrev;
+    else
+        pNext->SetPrev(pPrev);
+
+    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( FILECONF_TRACE_MASK,
+                _T("        tail: %s"),
+                ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
+
+    delete pLine;

 }
 
 bool wxFileConfig::LineListIsEmpty()
 {
 }
 
 bool wxFileConfig::LineListIsEmpty()
 {

-  return m_linesHead == NULL;
+    return m_linesHead == NULL;

 }
 
 // ============================================================================
 }
 
 // ============================================================================

-// wxFileConfig::ConfigGroup
+// wxFileConfig::wxFileConfigGroup

 // ============================================================================
 
 // ----------------------------------------------------------------------------
 // ============================================================================
 
 // ----------------------------------------------------------------------------


@@ -577,24 +1349,26 @@ bool wxFileConfig::LineListIsEmpty()
 // ----------------------------------------------------------------------------
 
 // ctor
 // ----------------------------------------------------------------------------
 
 // ctor

-wxFileConfig::ConfigGroup::ConfigGroup(wxFileConfig::ConfigGroup *pParent,
+wxFileConfigGroup::wxFileConfigGroup(wxFileConfigGroup *pParent,

                                        const wxString& strName,
                                        wxFileConfig *pConfig)
                                        const wxString& strName,
                                        wxFileConfig *pConfig)

-                         : m_strName(strName)
+                         : m_aEntries(CompareEntries),
+                           m_aSubgroups(CompareGroups),
+                           m_strName(strName)

 {
   m_pConfig = pConfig;
   m_pParent = pParent;
   m_pLine   = NULL;
 {
   m_pConfig = pConfig;
   m_pParent = pParent;
   m_pLine   = NULL;

-  m_bDirty  = FALSE;
+

   m_pLastEntry = NULL;
   m_pLastGroup = NULL;
 }
 
 // dtor deletes all children
   m_pLastEntry = NULL;
   m_pLastGroup = NULL;
 }
 
 // dtor deletes all children

-wxFileConfig::ConfigGroup::~ConfigGroup()
+wxFileConfigGroup::~wxFileConfigGroup()

 {
   // entries
 {
   // entries

-  uint n, nCount = m_aEntries.Count();
+  size_t n, nCount = m_aEntries.Count();

   for ( n = 0; n < nCount; n++ )
     delete m_aEntries[n];
 
   for ( n = 0; n < nCount; n++ )
     delete m_aEntries[n];
 


@@ -608,101 +1382,246 @@ wxFileConfig::ConfigGroup::~ConfigGroup()
 // line
 // ----------------------------------------------------------------------------
 
 // line
 // ----------------------------------------------------------------------------
 

-void wxFileConfig::ConfigGroup::SetLine(LineList *pLine)
+void wxFileConfigGroup::SetLine(wxFileConfigLineList *pLine)

 {
 {

-  wxASSERT( m_pLine == NULL ); // 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;
+    m_pLine = pLine;

 }
 
 }
 

-// return the line which contains "[our name]"
-wxFileConfig::LineList *wxFileConfig::ConfigGroup::GetGroupLine()
+/*
+  This is a bit complicated, so let me explain it in details. All lines that
+  were read from the local file (the only one we will ever modify) are stored
+  in a (doubly) linked list. Our problem is to know at which position in this
+  list should we insert the new entries/subgroups. To solve it we keep three
+  variables for each group: m_pLine, m_pLastEntry and m_pLastGroup.
+
+  m_pLine points to the line containing "[group_name]"
+  m_pLastEntry points to the last entry of this group in the local file.
+  m_pLastGroup                   subgroup
+
+  Initially, they're NULL all three. When the group (an entry/subgroup) is read
+  from the local file, the corresponding variable is set. However, if the group
+  was read from the global file and then modified or created by the application
+  these variables are still NULL and we need to create the corresponding lines.
+  See the following functions (and comments preceding them) for the details of
+  how we do it.
+
+  Also, when our last entry/group are deleted we need to find the new last
+  element - the code in DeleteEntry/Subgroup does this by backtracking the list
+  of lines until it either founds an entry/subgroup (and this is the new last
+  element) or the m_pLine of the group, in which case there are no more entries
+  (or subgroups) left and m_pLast<element> becomes NULL.
+
+  NB: This last problem could be avoided for entries if we added new entries
+      immediately after m_pLine, but in this case the entries would appear
+      backwards in the config file (OTOH, it's not that important) and as we
+      would still need to do it for the subgroups the code wouldn't have been
+      significantly less complicated.
+*/
+
+// Return the line which contains "[our name]". If we're still not in the list,
+// add our line to it immediately after the last line of our parent group if we
+// have it or in the very beginning if we're the root group.
+wxFileConfigLineList *wxFileConfigGroup::GetGroupLine()

 {
 {

-  if ( m_pLine == NULL ) {
-    // this group wasn't present in local config file, add it now
-    if ( Parent() != NULL ) {
-      wxString strFullName;
-      strFullName << "[" << GetFullName().c_str() + 1 << "]"; // +1: no '/'
-      m_pLine = m_pConfig->LineListInsert(strFullName, 
-                                          Parent()->GetLastGroupLine());
-      Parent()->SetLastGroup(this);
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("  GetGroupLine() for Group '%s'"),
+                Name().c_str() );
+
+    if ( !m_pLine )
+    {
+        wxLogTrace( FILECONF_TRACE_MASK,
+                    _T("    Getting Line item pointer") );
+
+        wxFileConfigGroup   *pParent = Parent();
+
+        // this group wasn't present in local config file, add it now
+        if ( pParent )
+        {
+            wxLogTrace( FILECONF_TRACE_MASK,
+                        _T("    checking parent '%s'"),
+                        pParent->Name().c_str() );
+
+            wxString    strFullName;
+
+            // add 1 to the name because we don't want to start with '/'
+            strFullName << wxT("[")
+                        << FilterOutEntryName(GetFullName().c_str() + 1)
+                        << wxT("]");
+            m_pLine = m_pConfig->LineListInsert(strFullName,
+                                                pParent->GetLastGroupLine());
+            pParent->SetLastGroup(this);  // we're surely after all the others
+        }
+        //else: this is the root group and so we return NULL because we don't
+        //      have any group line

     }
     }

-    else {
-      // we return NULL, so that LineListInsert() will insert us in the
-      // very beginning
+
+    return m_pLine;
+}
+
+// Return the last line belonging to the subgroups of this group (after which
+// we can add a new subgroup), if we don't have any subgroups or entries our
+// last line is the group line (m_pLine) itself.
+wxFileConfigLineList *wxFileConfigGroup::GetLastGroupLine()
+{
+    // if we have any subgroups, our last line is the last line of the last
+    // subgroup
+    if ( m_pLastGroup )
+    {
+        wxFileConfigLineList *pLine = m_pLastGroup->GetLastGroupLine();
+
+        wxASSERT_MSG( pLine, _T("last group must have !NULL associated line") );
+
+        return pLine;

     }
     }

-  }

 
 

-  return m_pLine;
+    // no subgroups, so the last line is the line of thelast entry (if any)
+    return GetLastEntryLine();

 }
 
 }
 

-// return the last line belonging to the subgroups of this group
-// (after which we can add a new subgroup)
-wxFileConfig::LineList *wxFileConfig::ConfigGroup::GetLastGroupLine()
+// return the last line belonging to the entries of this group (after which
+// we can add a new entry), if we don't have any entries we will add the new
+// one immediately after the group line itself.
+wxFileConfigLineList *wxFileConfigGroup::GetLastEntryLine()

 {
 {

-  // if we have any subgroups, our last line is the last line of the last
-  // subgroup
-  if ( m_pLastGroup != NULL )
-    return m_pLastGroup->GetLastGroupLine();
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("  GetLastEntryLine() for Group '%s'"),
+                Name().c_str() );

 
 

-  // if we have any entries, our last line is the last entry
-  if ( m_pLastEntry != NULL )
-    return m_pLastEntry->GetLine();
+    if ( m_pLastEntry )
+    {
+        wxFileConfigLineList    *pLine = m_pLastEntry->GetLine();

 
 

-  // nothing at all: last line is the first one
-  return GetGroupLine();
+        wxASSERT_MSG( pLine, _T("last entry must have !NULL associated line") );
+
+        return pLine;
+    }
+
+    // no entries: insert after the group header, if any
+    return GetGroupLine();

 }
 
 }
 

-// return the last line belonging to the entries of this group
-// (after which we can add a new entry)
-wxFileConfig::LineList *wxFileConfig::ConfigGroup::GetLastEntryLine()
+void wxFileConfigGroup::SetLastEntry(wxFileConfigEntry *pEntry)

 {
 {

-  if ( m_pLastEntry != NULL ) {
-    wxFileConfig::LineList *pLine = m_pLastEntry->GetLine();
+    m_pLastEntry = pEntry;

 
 

-    wxASSERT( pLine != NULL );  // last entry must have !NULL associated line
-    return pLine;
-  }
+    if ( !m_pLine )
+    {
+        // the only situation in which a group without its own line can have
+        // an entry is when the first entry is added to the initially empty
+        // root pseudo-group
+        wxASSERT_MSG( !m_pParent, _T("unexpected for non root group") );

 
 

-  // no entrues: insert after the group header
-  return GetGroupLine();
+        // let the group know that it does have a line in the file now
+        m_pLine = pEntry->GetLine();
+    }

 }
 
 // ----------------------------------------------------------------------------
 // group name
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // group name
 // ----------------------------------------------------------------------------
 

-wxString wxFileConfig::ConfigGroup::GetFullName() const
+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)

 {
 {

-  if ( Parent() )
-    return Parent()->GetFullName() + APPCONF_PATH_SEPARATOR + Name();
-  else
-    return "";
+    wxCHECK_RET( m_pParent, _T("the root group can't be renamed") );
+
+    m_strName = newName;
+
+    // update the group lines recursively
+    UpdateGroupAndSubgroupsLines();
+}
+
+wxString wxFileConfigGroup::GetFullName() const
+{
+    wxString fullname;
+    if ( Parent() )
+        fullname = Parent()->GetFullName() + wxCONFIG_PATH_SEPARATOR + Name();
+
+    return fullname;

 }
 
 // ----------------------------------------------------------------------------
 // find an item
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // find an item
 // ----------------------------------------------------------------------------
 

-wxFileConfig::ConfigEntry *
-wxFileConfig::ConfigGroup::FindEntry(const char *szName) const
+// use binary search because the array is sorted
+wxFileConfigEntry *
+wxFileConfigGroup::FindEntry(const wxChar *szName) const

 {
 {

-  uint nCount = m_aEntries.Count();
-  for ( uint n = 0; n < nCount; n++ ) {
-    if ( m_aEntries[n]->Name().IsSameAs(szName, APPCONF_CASE_SENSITIVE) )
-      return m_aEntries[n];
+  size_t i,
+       lo = 0,
+       hi = m_aEntries.Count();
+  int res;
+  wxFileConfigEntry *pEntry;
+
+  while ( lo < hi ) {
+    i = (lo + hi)/2;
+    pEntry = m_aEntries[i];
+
+    #if wxCONFIG_CASE_SENSITIVE
+      res = wxStrcmp(pEntry->Name(), szName);
+    #else
+      res = wxStricmp(pEntry->Name(), szName);
+    #endif
+
+    if ( res > 0 )
+      hi = i;
+    else if ( res < 0 )
+      lo = i + 1;
+    else
+      return pEntry;

   }
 
   return NULL;
 }
 
   }
 
   return NULL;
 }
 

-wxFileConfig::ConfigGroup *
-wxFileConfig::ConfigGroup::FindSubgroup(const char *szName) const
+wxFileConfigGroup *
+wxFileConfigGroup::FindSubgroup(const wxChar *szName) const

 {
 {

-  uint nCount = m_aSubgroups.Count();
-  for ( uint n = 0; n < nCount; n++ ) {
-    if ( m_aSubgroups[n]->Name().IsSameAs(szName, APPCONF_CASE_SENSITIVE) )
-      return m_aSubgroups[n];
+  size_t i,
+       lo = 0,
+       hi = m_aSubgroups.Count();
+  int res;
+  wxFileConfigGroup *pGroup;
+
+  while ( lo < hi ) {
+    i = (lo + hi)/2;
+    pGroup = m_aSubgroups[i];
+
+    #if wxCONFIG_CASE_SENSITIVE
+      res = wxStrcmp(pGroup->Name(), szName);
+    #else
+      res = wxStricmp(pGroup->Name(), szName);
+    #endif
+
+    if ( res > 0 )
+      hi = i;
+    else if ( res < 0 )
+      lo = i + 1;
+    else
+      return pGroup;

   }
 
   return NULL;
   }
 
   return NULL;


@@ -713,94 +1632,226 @@ wxFileConfig::ConfigGroup::FindSubgroup(const char *szName) const
 // ----------------------------------------------------------------------------
 
 // create a new entry and add it to the current group
 // ----------------------------------------------------------------------------
 
 // create a new entry and add it to the current group

-wxFileConfig::ConfigEntry *
-wxFileConfig::ConfigGroup::AddEntry(const wxString& strName, int nLine)
+wxFileConfigEntry *wxFileConfigGroup::AddEntry(const wxString& strName, int nLine)

 {
 {

-  wxASSERT( FindEntry(strName) == NULL );
+    wxASSERT( FindEntry(strName) == 0 );

 
 

-  ConfigEntry *pEntry = new ConfigEntry(this, strName, nLine);
-  m_aEntries.Add(pEntry);
+    wxFileConfigEntry   *pEntry = new wxFileConfigEntry(this, strName, nLine);

 
 

-  return pEntry;
+    m_aEntries.Add(pEntry);
+    return pEntry;

 }
 
 // create a new group and add it to the current group
 }
 
 // create a new group and add it to the current group

-wxFileConfig::ConfigGroup *
-wxFileConfig::ConfigGroup::AddSubgroup(const wxString& strName)
+wxFileConfigGroup *wxFileConfigGroup::AddSubgroup(const wxString& strName)

 {
 {

-  wxASSERT( FindSubgroup(strName) == NULL );
+    wxASSERT( FindSubgroup(strName) == 0 );

 
 

-  ConfigGroup *pGroup = new ConfigGroup(this, strName, m_pConfig);
-  m_aSubgroups.Add(pGroup);
+    wxFileConfigGroup   *pGroup = new wxFileConfigGroup(this, strName, m_pConfig);

 
 

-  return pGroup;
+    m_aSubgroups.Add(pGroup);
+    return pGroup;

 }
 
 // ----------------------------------------------------------------------------
 // delete an item
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // delete an item
 // ----------------------------------------------------------------------------
 

-bool wxFileConfig::ConfigGroup::DeleteSubgroup(const char *szName)
-{
-  uint n, nCount = m_aSubgroups.Count();
-  for ( n = 0; n < nCount; n++ ) {
-    if ( m_aSubgroups[n]->Name().IsSameAs(szName, APPCONF_CASE_SENSITIVE) )
-      break;
-  }
+/*
+  The delete operations are _very_ slow if we delete the last item of this
+  group (see comments before GetXXXLineXXX functions for more details),
+  so it's much better to start with the first entry/group if we want to
+  delete several of them.
+ */

 
 

-  if ( n == nCount )
-    return FALSE;
+bool wxFileConfigGroup::DeleteSubgroupByName(const wxChar *szName)
+{
+    wxFileConfigGroup * const pGroup = FindSubgroup(szName);

 
 

-  delete m_aSubgroups[n];
-  m_aSubgroups.Remove(n);
-  return TRUE;
+    return pGroup ? DeleteSubgroup(pGroup) : false;

 }
 
 }
 

-bool wxFileConfig::ConfigGroup::DeleteEntry(const char *szName)
+// Delete the subgroup and remove all references to it from
+// other data structures.
+bool wxFileConfigGroup::DeleteSubgroup(wxFileConfigGroup *pGroup)

 {
 {

-  uint n, nCount = m_aEntries.Count();
-  for ( n = 0; n < nCount; n++ ) {
-    if ( m_aEntries[n]->Name().IsSameAs(szName, APPCONF_CASE_SENSITIVE) )
-      break;
-  }
+    wxCHECK_MSG( pGroup, false, _T("deleting non existing group?") );
+
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("Deleting group '%s' from '%s'"),
+                pGroup->Name().c_str(),
+                Name().c_str() );
+
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("  (m_pLine) = prev: %p, this %p, next %p"),
+                m_pLine ? m_pLine->Prev() : NULL,
+                m_pLine,
+                m_pLine ? m_pLine->Next() : NULL );
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("  text: '%s'"),
+                m_pLine ? m_pLine->Text().c_str() : wxEmptyString );
+
+    // delete all entries...
+    size_t nCount = pGroup->m_aEntries.Count();
+
+    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();
+
+        if ( pLine )
+        {
+            wxLogTrace( FILECONF_TRACE_MASK,
+                        _T("    '%s'"),
+                        pLine->Text().c_str() );
+            m_pConfig->LineListRemove(pLine);
+        }
+    }
+
+    // ...and subgroups of this subgroup
+    nCount = pGroup->m_aSubgroups.Count();

 
 

-  if ( n == nCount )
-    return FALSE;
+    wxLogTrace( FILECONF_TRACE_MASK,
+                _T("Removing %lu subgroups"), (unsigned long)nCount );

 
 

-  delete m_aEntries[n];
-  m_aEntries.Remove(n);
-  return TRUE;
+    for ( size_t nGroup = 0; nGroup < nCount; nGroup++ )
+    {
+        pGroup->DeleteSubgroup(pGroup->m_aSubgroups[0]);
+    }
+
+    // and then finally the group itself
+    wxFileConfigLineList *pLine = pGroup->m_pLine;
+    if ( pLine )
+    {
+        wxLogTrace( FILECONF_TRACE_MASK,
+                    _T("  Removing line for group '%s' : '%s'"),
+                    pGroup->Name().c_str(),
+                    pLine->Text().c_str() );
+        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
+        if ( pGroup == m_pLastGroup )
+        {
+            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() )
+            {
+                // 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 == pl )
+                    {
+                        m_pLastGroup = m_aSubgroups[n];
+                        break;
+                    }
+                }
+            }
+        }
+
+        m_pConfig->LineListRemove(pLine);
+    }
+    else
+    {
+        wxLogTrace( FILECONF_TRACE_MASK,
+                    _T("  No line entry for Group '%s'?"),
+                    pGroup->Name().c_str() );
+    }
+
+    m_aSubgroups.Remove(pGroup);
+    delete pGroup;
+
+    return true;

 }
 
 }
 

-// ----------------------------------------------------------------------------
-// 
-// ----------------------------------------------------------------------------
-void wxFileConfig::ConfigGroup::SetDirty()
+bool wxFileConfigGroup::DeleteEntry(const wxChar *szName)

 {
 {

-  m_bDirty = TRUE;
-  if ( Parent() != NULL )             // propagate upwards
-    Parent()->SetDirty();
+  wxFileConfigEntry *pEntry = FindEntry(szName);
+  if ( !pEntry )
+  {
+      // entry doesn't exist, nothing to do
+      return false;
+  }
+
+  wxFileConfigLineList *pLine = pEntry->GetLine();
+  if ( pLine != NULL ) {
+    // notice that we may do this test inside the previous "if" because the
+    // last entry's line is surely !NULL
+    if ( pEntry == m_pLastEntry ) {
+      // our last entry is being deleted - find the last one which stays
+      wxASSERT( m_pLine != NULL );  // if we have an entry with !NULL pLine...
+
+      // go back until we find another entry or reach the group's line
+      wxFileConfigEntry *pNewLast = NULL;
+      size_t n, nEntries = m_aEntries.Count();
+      wxFileConfigLineList *pl;
+      for ( pl = pLine->Prev(); pl != m_pLine; pl = pl->Prev() ) {
+        // is it our subgroup?
+        for ( n = 0; (pNewLast == NULL) && (n < nEntries); n++ ) {
+          if ( m_aEntries[n]->GetLine() == m_pLine )
+            pNewLast = m_aEntries[n];
+        }
+
+        if ( pNewLast != NULL ) // found?
+          break;
+      }
+
+      if ( pl == m_pLine ) {
+        wxASSERT( !pNewLast );  // how comes it has the same line as we?
+
+        // we've reached the group line without finding any subgroups
+        m_pLastEntry = NULL;
+      }
+      else
+        m_pLastEntry = pNewLast;
+    }
+
+    m_pConfig->LineListRemove(pLine);
+  }
+
+  m_aEntries.Remove(pEntry);
+  delete pEntry;
+
+  return true;

 }
 
 // ============================================================================
 }
 
 // ============================================================================

-// wxFileConfig::ConfigEntry
+// wxFileConfig::wxFileConfigEntry

 // ============================================================================
 
 // ----------------------------------------------------------------------------
 // ctor
 // ----------------------------------------------------------------------------
 // ============================================================================
 
 // ----------------------------------------------------------------------------
 // ctor
 // ----------------------------------------------------------------------------

-wxFileConfig::ConfigEntry::ConfigEntry(wxFileConfig::ConfigGroup *pParent, 
+wxFileConfigEntry::wxFileConfigEntry(wxFileConfigGroup *pParent,

                                        const wxString& strName,
                                        int nLine)
                          : m_strName(strName)
 {
                                        const wxString& strName,
                                        int nLine)
                          : m_strName(strName)
 {

+  wxASSERT( !strName.empty() );
+

   m_pParent = pParent;
   m_nLine   = nLine;
   m_pLine   = NULL;
 
   m_pParent = pParent;
   m_nLine   = nLine;
   m_pLine   = NULL;
 

-  m_bDirty  = FALSE;
+  m_bHasValue = false;

 
 

-  m_bImmutable = strName[0] == APPCONF_IMMUTABLE_PREFIX;
+  m_bImmutable = strName[0] == wxCONFIG_IMMUTABLE_PREFIX;

   if ( m_bImmutable )
     m_strName.erase(0, 1);  // remove first character
 }
   if ( m_bImmutable )
     m_strName.erase(0, 1);  // remove first character
 }


@@ -809,10 +1860,10 @@ wxFileConfig::ConfigEntry::ConfigEntry(wxFileConfig::ConfigGroup *pParent,
 // set value
 // ----------------------------------------------------------------------------
 
 // set value
 // ----------------------------------------------------------------------------
 

-void wxFileConfig::ConfigEntry::SetLine(LineList *pLine)
+void wxFileConfigEntry::SetLine(wxFileConfigLineList *pLine)

 {
   if ( m_pLine != NULL ) {
 {
   if ( m_pLine != NULL ) {

-    wxLogWarning("Entry '%s' appears more than once in group '%s'",
+    wxLogWarning(_("entry '%s' appears more than once in group '%s'"),

                  Name().c_str(), m_pParent->GetFullName().c_str());
   }
 
                  Name().c_str(), m_pParent->GetFullName().c_str());
   }
 


@@ -820,86 +1871,128 @@ void wxFileConfig::ConfigEntry::SetLine(LineList *pLine)
   Group()->SetLastEntry(this);
 }
 
   Group()->SetLastEntry(this);
 }
 

-// second parameter is FALSE if we read the value from file and prevents the
+// second parameter is false if we read the value from file and prevents the

 // entry from being marked as 'dirty'
 // entry from being marked as 'dirty'

-void wxFileConfig::ConfigEntry::SetValue(const wxString& strValue, bool bUser)
+void wxFileConfigEntry::SetValue(const wxString& strValue, bool bUser)

 {
 {

-  if ( bUser && IsImmutable() ) {
-    wxLogWarning("Attempt to change immutable key '%s' ignored.", 
-                 Name().c_str());
-    return;
-  }
+    if ( bUser && IsImmutable() )
+    {
+        wxLogWarning( _("attempt to change immutable key '%s' ignored."),
+                      Name().c_str());
+        return;
+    }

 
 

-  // do nothing if it's the same value
-  if ( strValue == m_strValue )
-    return;
+    // do nothing if it's the same value: but don't test for it if m_bHasValue
+    // hadn't been set yet or we'd never write empty values to the file
+    if ( m_bHasValue && strValue == m_strValue )
+        return;

 
 

-  m_strValue = strValue;
+    m_bHasValue = true;
+    m_strValue = strValue;

 
 

-  if ( bUser ) {
-    wxString strVal = FilterOut(strValue);
-    wxString strLine;
-    strLine << m_strName << " = " << strVal;
+    if ( bUser )
+    {
+        wxString strValFiltered;

 
 

-    if ( m_pLine != NULL ) {
-      // entry was read from the local config file, just modify the line
-      m_pLine->SetText(strLine);
-    }
-    else {
-      // add a new line to the file
-      wxASSERT( m_nLine == NOT_FOUND );   // consistency check
+        if ( Group()->Config()->GetStyle() & wxCONFIG_USE_NO_ESCAPE_CHARACTERS )
+        {
+            strValFiltered = strValue;
+        }
+        else {
+            strValFiltered = FilterOutValue(strValue);
+        }
+
+        wxString    strLine;
+        strLine << FilterOutEntryName(m_strName) << wxT('=') << strValFiltered;

 
 

-      m_pLine = Group()->Config()->LineListInsert(strLine, 
-                                                  Group()->GetLastEntryLine());
-      Group()->SetLastEntry(this);
+        if ( m_pLine )
+        {
+            // entry was read from the local config file, just modify the line
+            m_pLine->SetText(strLine);
+        }
+        else // this entry didn't exist in the local 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);
+
+            Group()->SetLastEntry(this);
+        }

     }
     }

+}

 
 

-    SetDirty();
-  }
+// ============================================================================
+// global functions
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// compare functions for array sorting
+// ----------------------------------------------------------------------------
+
+int CompareEntries(wxFileConfigEntry *p1, wxFileConfigEntry *p2)
+{
+#if wxCONFIG_CASE_SENSITIVE
+    return wxStrcmp(p1->Name(), p2->Name());
+#else
+    return wxStricmp(p1->Name(), p2->Name());
+#endif

 }
 
 }
 

-void wxFileConfig::ConfigEntry::SetDirty()
+int CompareGroups(wxFileConfigGroup *p1, wxFileConfigGroup *p2)

 {
 {

-  m_bDirty = TRUE;
-  Group()->SetDirty();
+#if wxCONFIG_CASE_SENSITIVE
+    return wxStrcmp(p1->Name(), p2->Name());
+#else
+    return wxStricmp(p1->Name(), p2->Name());
+#endif

 }
 
 }
 

-// ============================================================================
-// global functions
-// ============================================================================
+// ----------------------------------------------------------------------------
+// filter functions
+// ----------------------------------------------------------------------------

 
 

-// undo FilterOut
-wxString FilterIn(const wxString& str)
+// undo FilterOutValue
+static wxString FilterInValue(const wxString& str)

 {
   wxString strResult;
 {
   wxString strResult;

+  strResult.Alloc(str.Len());

 
 

-  bool bQuoted = !str.IsEmpty() && str[0] == '"';
+  bool bQuoted = !str.empty() && str[0] == '"';

 
 

-  for ( uint n = bQuoted ? 1 : 0; n < str.Len(); n++ ) {
-    if ( str[n] == '\\' ) {
+  for ( size_t n = bQuoted ? 1 : 0; n < str.Len(); n++ ) {
+    if ( str[n] == wxT('\\') ) {

       switch ( str[++n] ) {
       switch ( str[++n] ) {

-        case 'n':
-          strResult += '\n';
+        case wxT('n'):
+          strResult += wxT('\n');

           break;
 
           break;
 

-        case 't':
-          strResult += '\t';
+        case wxT('r'):
+          strResult += wxT('\r');

           break;
 
           break;
 

-        case '\\':
-          strResult += '\\';
+        case wxT('t'):
+          strResult += wxT('\t');

           break;
 
           break;
 

-        case '"':
-          strResult += '"';
+        case wxT('\\'):
+          strResult += wxT('\\');
+          break;
+
+        case wxT('"'):
+          strResult += wxT('"');

           break;
       }
     }
     else {
           break;
       }
     }
     else {

-      if ( str[n] != '"' || !bQuoted )
+      if ( str[n] != wxT('"') || !bQuoted )

         strResult += str[n];
         strResult += str[n];

-      else if ( n != str.Len() - 1 )
-        wxLogWarning("unexpected \" at position %d in '%s'.", n, str.c_str());
+      else if ( n != str.Len() - 1 ) {
+        wxLogWarning(_("unexpected \" at position %d in '%s'."),
+                     n, str.c_str());
+      }

       //else: it's the last quote of a quoted string, ok
     }
   }
       //else: it's the last quote of a quoted string, ok
     }
   }


@@ -908,34 +2001,44 @@ wxString FilterIn(const wxString& str)
 }
 
 // quote the string before writing it to file
 }
 
 // quote the string before writing it to file

-wxString FilterOut(const wxString& str)
+static wxString FilterOutValue(const wxString& str)

 {
 {

+   if ( !str )
+      return str;
+

   wxString strResult;
   wxString strResult;

+  strResult.Alloc(str.Len());

 
   // quoting is necessary to preserve spaces in the beginning of the string
 
   // quoting is necessary to preserve spaces in the beginning of the string

-  bool bQuote = isspace(str[0]) || str[0] == '"';
+  bool bQuote = wxIsspace(str[0]) || str[0] == wxT('"');

 
   if ( bQuote )
 
   if ( bQuote )

-    strResult += '"';
+    strResult += wxT('"');

 
 

-  char c;
-  for ( uint n = 0; n < str.Len(); n++ ) {
+  wxChar c;
+  for ( size_t n = 0; n < str.Len(); n++ ) {

     switch ( str[n] ) {
     switch ( str[n] ) {

-      case '\n':
-        c = 'n';
+      case wxT('\n'):
+        c = wxT('n');

         break;
 
         break;
 

-      case '\t':
-        c = 't';
+      case wxT('\r'):
+        c = wxT('r');

         break;
 
         break;
 

-      case '\\':
-        c = '\\';
+      case wxT('\t'):
+        c = wxT('t');

         break;
 
         break;
 

-      case '"':
-        if ( bQuote )
-          c = '"';
+      case wxT('\\'):
+        c = wxT('\\');
+        break;
+
+      case wxT('"'):
+        if ( bQuote ) {
+          c = wxT('"');
+          break;
+        }

         //else: fall through
 
       default:
         //else: fall through
 
       default:


@@ -944,11 +2047,72 @@ wxString FilterOut(const wxString& str)
     }
 
     // we get here only for special characters
     }
 
     // we get here only for special characters

-    strResult << '\\' << c;
+    strResult << wxT('\\') << c;

   }
 
   if ( bQuote )
   }
 
   if ( bQuote )

-    strResult += '"';
+    strResult += wxT('"');
+
+  return strResult;
+}
+
+// undo FilterOutEntryName
+static wxString FilterInEntryName(const wxString& str)
+{
+  wxString strResult;
+  strResult.Alloc(str.Len());
+
+  for ( const wxChar *pc = str.c_str(); *pc != '\0'; 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;
+  }
+
+  return strResult;
+}
+
+// sanitize entry or group name: insert '\\' before any special characters
+static wxString FilterOutEntryName(const wxString& str)
+{
+  wxString strResult;
+  strResult.Alloc(str.Len());
+
+  for ( const wxChar *pc = str.c_str(); *pc != wxT('\0'); pc++ ) {
+    const wxChar c = *pc;
+
+    // we explicitly allow some of "safe" chars and 8bit ASCII characters
+    // which will probably never have special meaning and with which we can't
+    // use isalnum() anyhow (in ASCII built, in Unicode it's just fine)
+    //
+    // NB: note that wxCONFIG_IMMUTABLE_PREFIX and wxCONFIG_PATH_SEPARATOR
+    //     should *not* be quoted
+    if (
+#if !wxUSE_UNICODE
+            ((unsigned char)c < 127) &&
+#endif // ANSI
+         !wxIsalnum(c) && !wxStrchr(wxT("@_/-!.*%"), c) )
+    {
+      strResult += wxT('\\');
+    }
+
+    strResult += c;
+  }

 
   return strResult;
 }
 
   return strResult;
 }

+
+// we can't put ?: in the ctor initializer list because it confuses some
+// broken compilers (Borland C++)
+static wxString GetAppName(const wxString& appName)
+{
+    if ( !appName && wxTheApp )
+        return wxTheApp->GetAppName();
+    else
+        return appName;
+}
+
+#endif // wxUSE_CONFIG