correct scrolling and clipping of list headers

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

diff --git a/src/common/string.cpp b/src/common/string.cpp
index 3031ae6dafe7ccde81f696a18e5b88d89a8285dc..d5c51592e0b77e436290a116c905de5ec8f9760f 100644 (file)
--- a/src/common/string.cpp
+++ b/src/common/string.cpp
@@ -1,18 +1,15 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        string.cpp
 // Purpose:     wxString class
 /////////////////////////////////////////////////////////////////////////////
 // Name:        string.cpp
 // Purpose:     wxString class

-// Author:      Vadim Zeitlin
+// Author:      Vadim Zeitlin, Ryan Norton

 // Modified by:
 // Created:     29/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Modified by:
 // Created:     29/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

-// Licence:    wxWindows license
+//              (c) 2004 Ryan Norton <wxprojects@comcast.net>
+// Licence:     wxWindows licence

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

-#ifdef __GNUG__
-#pragma implementation "string.h"
-#endif
-

 /*
  * About ref counting:
  *  1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())
 /*
  * About ref counting:
  *  1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())


@@ -28,78 +25,97 @@
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+  #pragma hdrstop

 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

-#include "wx/defs.h"
-#include "wx/string.h"
+  #include "wx/defs.h"
+  #include "wx/string.h"
+  #include "wx/intl.h"
+  #include "wx/thread.h"

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

-#ifdef  WXSTRING_IS_WXOBJECT
-  IMPLEMENT_DYNAMIC_CLASS(wxString, wxObject)
-#endif  //WXSTRING_IS_WXOBJECT
+#ifndef __WXMSW__
+#include <errno.h>
+#endif
+
+#ifdef __SALFORDC__
+  #include <clib.h>
+#endif
+
+// allocating extra space for each string consumes more memory but speeds up
+// the concatenation operations (nLen is the current string's length)
+// NB: EXTRA_ALLOC must be >= 0!
+#define EXTRA_ALLOC       (19 - nLen % 16)

 
 // ---------------------------------------------------------------------------
 // static class variables definition
 // ---------------------------------------------------------------------------
 
 
 // ---------------------------------------------------------------------------
 // static class variables definition
 // ---------------------------------------------------------------------------
 

-#ifdef  STD_STRING_COMPATIBILITY
-  const size_t wxString::npos = STRING_MAXLEN;
+#if !wxUSE_STL
+  //According to STL _must_ be a -1 size_t
+  const size_t wxStringBase::npos = (size_t) -1;

 #endif
 
 #endif
 

-// ===========================================================================
-// static class data, special inlines
-// ===========================================================================
+// ----------------------------------------------------------------------------
+// static data
+// ----------------------------------------------------------------------------
+
+#if wxUSE_STL
+
+extern const wxChar WXDLLIMPEXP_BASE *wxEmptyString = _T("");
+
+#else
+
+// for an empty string, GetStringData() will return this address: this
+// structure has the same layout as wxStringData and it's data() method will
+// return the empty string (dummy pointer)
+static const struct
+{
+  wxStringData data;
+  wxChar dummy;
+} g_strEmpty = { {-1, 0, 0}, wxT('\0') };

 
 

-// for an empty string, GetStringData() will return this address
-static int g_strEmpty[] = { -1,     // ref count (locked)
-                             0,     // current length
-                             0,     // allocated memory
-                             0 };   // string data

 // empty C style string: points to 'string data' byte of g_strEmpty
 // empty C style string: points to 'string data' byte of g_strEmpty

-extern const char *g_szNul = (const char *)(&g_strEmpty[3]);
+extern const wxChar WXDLLIMPEXP_BASE *wxEmptyString = &g_strEmpty.dummy;

 
 

-// ===========================================================================
+#endif
+
+// ----------------------------------------------------------------------------

 // global functions
 // global functions

-// ===========================================================================
+// ----------------------------------------------------------------------------

 
 

-#ifdef  STD_STRING_COMPATIBILITY
+#if wxUSE_STD_IOSTREAM

 
 // MS Visual C++ version 5.0 provides the new STL headers as well as the old
 // iostream ones.
 //
 // ATTN: you can _not_ use both of these in the same program!
 
 // MS Visual C++ version 5.0 provides the new STL headers as well as the old
 // iostream ones.
 //
 // ATTN: you can _not_ use both of these in the same program!

-#if 0 // def  _MSC_VER
-  #include  <iostream>
-  #define   NAMESPACE   std::
-#else
-  #include  <iostream.h>
-  #define   NAMESPACE
-#endif  //Visual C++

 
 

-NAMESPACE istream& operator>>(NAMESPACE istream& is, wxString& WXUNUSED(str))
+#include <iostream>
+
+wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))

 {
 #if 0
   int w = is.width(0);
   if ( is.ipfx(0) ) {
 {
 #if 0
   int w = is.width(0);
   if ( is.ipfx(0) ) {

-    NAMESPACE streambuf *sb = is.rdbuf();
+    streambuf *sb = is.rdbuf();

     str.erase();
     while ( true ) {
       int ch = sb->sbumpc ();
       if ( ch == EOF ) {
     str.erase();
     while ( true ) {
       int ch = sb->sbumpc ();
       if ( ch == EOF ) {

-        is.setstate(NAMESPACE ios::eofbit);
+        is.setstate(ios::eofbit);

         break;
       }
       else if ( isspace(ch) ) {
         sb->sungetc();
         break;
       }
         break;
       }
       else if ( isspace(ch) ) {
         sb->sungetc();
         break;
       }

-      
+

       str += ch;
       if ( --w == 1 )
         break;
       str += ch;
       if ( --w == 1 )
         break;


@@ -108,240 +124,654 @@ NAMESPACE istream& operator>>(NAMESPACE istream& is, wxString& WXUNUSED(str))
 
   is.isfx();
   if ( str.length() == 0 )
 
   is.isfx();
   if ( str.length() == 0 )

-    is.setstate(NAMESPACE ios::failbit);
+    is.setstate(ios::failbit);

 #endif
   return is;
 }
 
 #endif
   return is;
 }
 

-#endif  //std::string compatibility
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
+{
+  os << str.c_str();
+  return os;
+}
+
+#endif // wxUSE_STD_IOSTREAM
+
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+// this small class is used to gather statistics for performance tuning
+//#define WXSTRING_STATISTICS
+#ifdef  WXSTRING_STATISTICS
+  class Averager
+  {
+  public:
+    Averager(const wxChar *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
+   ~Averager()
+   { wxPrintf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
+
+    void Add(size_t n) { m_nTotal += n; m_nCount++; }
+
+  private:
+    size_t m_nCount, m_nTotal;
+    const wxChar *m_sz;
+  } g_averageLength("allocation size"),
+    g_averageSummandLength("summand length"),
+    g_averageConcatHit("hit probability in concat"),
+    g_averageInitialLength("initial string length");
+
+  #define STATISTICS_ADD(av, val) g_average##av.Add(val)
+#else
+  #define STATISTICS_ADD(av, val)
+#endif // WXSTRING_STATISTICS
+
+#if !wxUSE_STL

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

-// wxString class core
+// wxStringData class deallocation
+// ===========================================================================
+
+#if defined(__VISUALC__) && defined(_MT) && !defined(_DLL)
+#  pragma message (__FILE__ ": building with Multithreaded non DLL runtime has a performance impact on wxString!")
+void wxStringData::Free()
+{
+    free(this);
+}
+#endif
+

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

+// wxStringBase
+// ===========================================================================
+
+// takes nLength elements of psz starting at nPos
+void wxStringBase::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
+{
+  Init();
+
+  // if the length is not given, assume the string to be NUL terminated
+  if ( nLength == npos ) {
+    wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
+
+    nLength = wxStrlen(psz + nPos);
+  }
+
+  STATISTICS_ADD(InitialLength, nLength);
+
+  if ( nLength > 0 ) {
+    // trailing '\0' is written in AllocBuffer()
+    if ( !AllocBuffer(nLength) ) {
+      wxFAIL_MSG( _T("out of memory in wxStringBase::InitWith") );
+      return;
+    }
+    wxTmemcpy(m_pchData, psz + nPos, nLength);
+  }
+}
+
+// poor man's iterators are "void *" pointers
+wxStringBase::wxStringBase(const void *pStart, const void *pEnd)
+{
+  InitWith((const wxChar *)pStart, 0,
+           (const wxChar *)pEnd - (const wxChar *)pStart);
+}
+
+wxStringBase::wxStringBase(size_type n, wxChar ch)
+{
+  Init();
+  append(n, ch);
+}

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

-// construction
+// memory allocation

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

-// construct an empty string
-wxString::wxString()
+// allocates memory needed to store a C string of length nLen
+bool wxStringBase::AllocBuffer(size_t nLen)

 {
 {

-  Init();
+  // allocating 0 sized buffer doesn't make sense, all empty strings should
+  // reuse g_strEmpty
+  wxASSERT( nLen >  0 );
+
+  // make sure that we don't overflow
+  wxASSERT( nLen < (INT_MAX / sizeof(wxChar)) -
+                   (sizeof(wxStringData) + EXTRA_ALLOC + 1) );
+
+  STATISTICS_ADD(Length, nLen);
+
+  // allocate memory:
+  // 1) one extra character for '\0' termination
+  // 2) sizeof(wxStringData) for housekeeping info
+  wxStringData* pData = (wxStringData*)
+    malloc(sizeof(wxStringData) + (nLen + EXTRA_ALLOC + 1)*sizeof(wxChar));
+
+  if ( pData == NULL ) {
+    // allocation failures are handled by the caller
+    return false;
+  }
+
+  pData->nRefs        = 1;
+  pData->nDataLength  = nLen;
+  pData->nAllocLength = nLen + EXTRA_ALLOC;
+  m_pchData           = pData->data();  // data starts after wxStringData
+  m_pchData[nLen]     = wxT('\0');
+  return true;

 }
 
 }
 

-// copy constructor
-wxString::wxString(const wxString& stringSrc)
+// must be called before changing this string
+bool wxStringBase::CopyBeforeWrite()

 {
 {

-  wxASSERT( stringSrc.GetStringData()->IsValid() );
+  wxStringData* pData = GetStringData();

 
 

-  if ( stringSrc.IsEmpty() ) {
-    // nothing to do for an empty string
-    Init();
+  if ( pData->IsShared() ) {
+    pData->Unlock();                // memory not freed because shared
+    size_t nLen = pData->nDataLength;
+    if ( !AllocBuffer(nLen) ) {
+      // allocation failures are handled by the caller
+      return false;
+    }
+    wxTmemcpy(m_pchData, pData->data(), nLen);
+  }
+
+  wxASSERT( !GetStringData()->IsShared() );  // we must be the only owner
+
+  return true;
+}
+
+// must be called before replacing contents of this string
+bool wxStringBase::AllocBeforeWrite(size_t nLen)
+{
+  wxASSERT( nLen != 0 );  // doesn't make any sense
+
+  // must not share string and must have enough space
+  wxStringData* pData = GetStringData();
+  if ( pData->IsShared() || pData->IsEmpty() ) {
+    // can't work with old buffer, get new one
+    pData->Unlock();
+    if ( !AllocBuffer(nLen) ) {
+      // allocation failures are handled by the caller
+      return false;
+    }

   }
   else {
   }
   else {

-    m_pchData = stringSrc.m_pchData;            // share same data
-    GetStringData()->Lock();                    // => one more copy
+    if ( nLen > pData->nAllocLength ) {
+      // realloc the buffer instead of calling malloc() again, this is more
+      // efficient
+      STATISTICS_ADD(Length, nLen);
+
+      nLen += EXTRA_ALLOC;
+
+      pData = (wxStringData*)
+          realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+      if ( pData == NULL ) {
+        // allocation failures are handled by the caller
+        // keep previous data since reallocation failed
+        return false;
+      }
+
+      pData->nAllocLength = nLen;
+      m_pchData = pData->data();
+    }

   }
   }

+
+  wxASSERT( !GetStringData()->IsShared() );  // we must be the only owner
+
+  // it doesn't really matter what the string length is as it's going to be
+  // overwritten later but, for extra safety, set it to 0 for now as we may
+  // have some junk in m_pchData
+  GetStringData()->nDataLength = 0;
+
+  return true;

 }
 
 }
 

-// constructs string of <nLength> copies of character <ch>
-wxString::wxString(char ch, size_t nLength)
+wxStringBase& wxStringBase::append(size_t n, wxChar ch)

 {
 {

-  Init();
+    size_type len = length();

 
 

-  if ( nLength > 0 ) {
-    AllocBuffer(nLength);
+    if ( !Alloc(len + n) || !CopyBeforeWrite() ) {
+      wxFAIL_MSG( _T("out of memory in wxStringBase::append") );
+    }
+    GetStringData()->nDataLength = len + n;
+    m_pchData[len + n] = '\0';
+    for ( size_t i = 0; i < n; ++i )
+        m_pchData[len + i] = ch;
+    return *this;
+}

 
 

-    wxASSERT( sizeof(char) == 1 );  // can't use memset if not
+void wxStringBase::resize(size_t nSize, wxChar ch)
+{
+    size_t len = length();

 
 

-    memset(m_pchData, ch, nLength);
-  }
+    if ( nSize < len )
+    {
+        erase(begin() + nSize, end());
+    }
+    else if ( nSize > len )
+    {
+        append(nSize - len, ch);
+    }
+    //else: we have exactly the specified length, nothing to do

 }
 
 }
 

-// takes nLength elements of psz starting at nPos
-void wxString::InitWith(const char *psz, size_t nPos, size_t nLength)
+// allocate enough memory for nLen characters
+bool wxStringBase::Alloc(size_t nLen)

 {
 {

-  Init();
+  wxStringData *pData = GetStringData();
+  if ( pData->nAllocLength <= nLen ) {
+    if ( pData->IsEmpty() ) {
+      nLen += EXTRA_ALLOC;

 
 

-  wxASSERT( nPos <= Strlen(psz) );
+      wxStringData* pData = (wxStringData*)
+          malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));

 
 

-  if ( nLength == STRING_MAXLEN )
-    nLength = Strlen(psz + nPos);
+      if ( pData == NULL ) {
+        // allocation failure handled by caller
+        return false;
+      }

 
 

-  if ( nLength > 0 ) {
-    // trailing '\0' is written in AllocBuffer()
-    AllocBuffer(nLength);
-    memcpy(m_pchData, psz + nPos, nLength*sizeof(char));
+      pData->nRefs = 1;
+      pData->nDataLength = 0;
+      pData->nAllocLength = nLen;
+      m_pchData = pData->data();  // data starts after wxStringData
+      m_pchData[0u] = wxT('\0');
+    }
+    else if ( pData->IsShared() ) {
+      pData->Unlock();                // memory not freed because shared
+      size_t nOldLen = pData->nDataLength;
+      if ( !AllocBuffer(nLen) ) {
+        // allocation failure handled by caller
+        return false;
+      }
+      // +1 to copy the terminator, too
+      memcpy(m_pchData, pData->data(), (nOldLen+1)*sizeof(wxChar));
+      GetStringData()->nDataLength = nOldLen;
+    }
+    else {
+      nLen += EXTRA_ALLOC;
+
+      pData = (wxStringData *)
+        realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+      if ( pData == NULL ) {
+        // allocation failure handled by caller
+        // keep previous data since reallocation failed
+        return false;
+      }
+
+      // it's not important if the pointer changed or not (the check for this
+      // is not faster than assigning to m_pchData in all cases)
+      pData->nAllocLength = nLen;
+      m_pchData = pData->data();
+    }

   }
   }

+  //else: we've already got enough
+  return true;
+}
+
+wxStringBase::iterator wxStringBase::begin()
+{
+    if (length() > 0)
+        CopyBeforeWrite();
+    return m_pchData;

 }
 }

-        
-// take first nLength characters of C string psz
-// (default value of STRING_MAXLEN means take all the string)
-wxString::wxString(const char *psz, size_t nLength)
+
+wxStringBase::iterator wxStringBase::end()

 {
 {

-  InitWith(psz, 0, nLength);
+    if (length() > 0)
+        CopyBeforeWrite();
+    return m_pchData + length();

 }
 
 }
 

-// the same as previous constructor, but for compilers using unsigned char
-wxString::wxString(const unsigned char* psz, size_t nLength)
+wxStringBase::iterator wxStringBase::erase(iterator it)

 {
 {

-  InitWith((const char *)psz, 0, nLength);
-} 
- 
-#ifdef  STD_STRING_COMPATIBILITY
+    size_type idx = it - begin();
+    erase(idx, 1);
+    return begin() + idx;
+}

 
 

-// ctor from a substring
-wxString::wxString(const wxString& str, size_t nPos, size_t nLen)
+wxStringBase& wxStringBase::erase(size_t nStart, size_t nLen)

 {
 {

-  wxASSERT( str.GetStringData()->IsValid() );
+  wxASSERT(nStart <= length());
+  size_t strLen = length() - nStart;
+  // delete nLen or up to the end of the string characters
+  nLen = strLen < nLen ? strLen : nLen;
+  wxString strTmp(c_str(), nStart);
+  strTmp.append(c_str() + nStart + nLen, length() - nStart - nLen);

 
 

-  InitWith(str.c_str(), nPos, nLen == npos ? 0 : nLen);
+  swap(strTmp);
+  return *this;

 }
 
 }
 

-// poor man's iterators are "void *" pointers
-wxString::wxString(const void *pStart, const void *pEnd)
+wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)

 {
 {

-  InitWith((const char *)pStart, 0, 
-           (const char *)pEnd - (const char *)pStart);
+  wxASSERT( nPos <= length() );
+
+  if ( n == npos ) n = wxStrlen(sz);
+  if ( n == 0 ) return *this;
+
+  if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
+    wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
+  }
+
+  memmove(m_pchData + nPos + n, m_pchData + nPos,
+          (length() - nPos) * sizeof(wxChar));
+  memcpy(m_pchData + nPos, sz, n * sizeof(wxChar));
+  GetStringData()->nDataLength = length() + n;
+  m_pchData[length()] = '\0';
+
+  return *this;

 }
 
 }
 

-#endif  //std::string compatibility
+void wxStringBase::swap(wxStringBase& str)
+{
+    wxChar* tmp = str.m_pchData;
+    str.m_pchData = m_pchData;
+    m_pchData = tmp;
+}

 
 

-// from wide string
-wxString::wxString(const wchar_t *pwz)
+size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const

 {
 {

-  // first get necessary size
-  size_t nLen = wcstombs(NULL, pwz, 0);
+  wxASSERT( str.GetStringData()->IsValid() );
+  wxASSERT( nStart <= length() );

 
 

-  // empty?
-  if ( nLen != 0 ) {
-    AllocBuffer(nLen);
-    wcstombs(m_pchData, pwz, nLen);
-  }
-  else {
-    Init();
+  //anchor
+  const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
+                                            str.c_str()[0],
+                                            length() - nStart);
+
+  if(!p)
+      return npos;
+
+  while(p - c_str() + str.length() <= length() &&
+        wxTmemcmp(p, str.c_str(), str.length()) )
+  {
+      //Previosly passed as the first argument to wxTmemchr,
+      //but C/C++ standard does not specify evaluation order
+      //of arguments to functions -
+      //http://embedded.com/showArticle.jhtml?articleID=9900607
+      ++p;
+
+      //anchor again
+      p = (const wxChar*)wxTmemchr(p,
+                                  str.c_str()[0],
+                                  length() - (p - c_str()));
+
+      if(!p)
+          return npos;

   }
   }

+
+   return (p - c_str() + str.length() <= length()) ? p - c_str() : npos;

 }
 
 }
 

-// ---------------------------------------------------------------------------
-// memory allocation
-// ---------------------------------------------------------------------------
+size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
+{
+  return find(wxStringBase(sz, n), nStart);
+}

 
 

-// allocates memory needed to store a C string of length nLen
-void wxString::AllocBuffer(size_t nLen)
+size_t wxStringBase::find(wxChar ch, size_t nStart) const

 {
 {

-  wxASSERT( nLen >  0         );    //
-  wxASSERT( nLen <= INT_MAX-1 );    // max size (enough room for 1 extra)
+  wxASSERT( nStart <= length() );

 
 

-  // allocate memory:
-  // 1) one extra character for '\0' termination
-  // 2) sizeof(wxStringData) for housekeeping info
-  wxStringData* pData = (wxStringData*)new char[sizeof(wxStringData) +
-                                                (nLen + 1)*sizeof(char)];
-  pData->nRefs        = 1;
-  pData->data()[nLen] = '\0';
-  pData->nDataLength  = nLen;
-  pData->nAllocLength = nLen;
-  m_pchData           = pData->data();  // data starts after wxStringData
+  const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
+
+  return p == NULL ? npos : p - c_str();

 }
 
 }
 

-// releases the string memory and reinits it
-void wxString::Reinit()
+size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const

 {
 {

-  GetStringData()->Unlock();
-  Init();
+    wxASSERT( str.GetStringData()->IsValid() );
+    wxASSERT( nStart == npos || nStart <= length() );
+
+    if ( length() >= str.length() )
+    {
+        // avoids a corner case later
+        if ( length() == 0 && str.length() == 0 )
+            return 0;
+
+        // "top" is the point where search starts from
+        size_t top = length() - str.length();
+
+        if ( nStart == npos )
+            nStart = length() - 1;
+        if ( nStart < top )
+            top = nStart;
+
+        const wxChar *cursor = c_str() + top;
+        do
+        {
+            if ( wxTmemcmp(cursor, str.c_str(),
+                        str.length()) == 0 )
+            {
+                return cursor - c_str();
+            }
+        } while ( cursor-- > c_str() );
+    }
+
+    return npos;

 }
 
 }
 

-// wrapper around wxString::Reinit
-void wxString::Empty()
+size_t wxStringBase::rfind(const wxChar* sz, size_t nStart, size_t n) const

 {
 {

-  if ( GetStringData()->nDataLength != 0 )
-    Reinit();
+    return rfind(wxStringBase(sz, n), nStart);
+}

 
 

-  wxASSERT( GetStringData()->nDataLength == 0 );
-  wxASSERT( GetStringData()->nAllocLength == 0 );
+size_t wxStringBase::rfind(wxChar ch, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length();
+    }
+    else
+    {
+        wxASSERT( nStart <= length() );
+    }
+
+    const wxChar *actual;
+    for ( actual = c_str() + ( nStart == npos ? length() : nStart + 1 );
+          actual > c_str(); --actual )
+    {
+        if ( *(actual - 1) == ch )
+            return (actual - 1) - c_str();
+    }
+
+    return npos;

 }
 
 }
 

-// must be called before changing this string
-void wxString::CopyBeforeWrite()
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart) const

 {
 {

-  wxStringData* pData = GetStringData();
+    wxASSERT(nStart <= length());

 
 

-  if ( pData->IsShared() ) {
-    pData->Unlock();                // memory not freed because shared
-    AllocBuffer(pData->nDataLength);
-    memcpy(m_pchData, pData->data(), (pData->nDataLength + 1)*sizeof(char));
-  }
+    size_t len = wxStrlen(sz);

 
 

-  wxASSERT( !pData->IsShared() );  // we must be the only owner
+    size_t i;
+    for(i = nStart; i < this->length(); ++i)
+    {
+        if (wxTmemchr(sz, *(c_str() + i), len))
+            break;
+    }
+
+    if(i == this->length())
+        return npos;
+    else
+        return i;

 }
 
 }
 

-// must be called before replacing contents of this string
-void wxString::AllocBeforeWrite(size_t nLen)
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart,
+                                   size_t n) const

 {
 {

-  wxASSERT( nLen != 0 );  // doesn't make any sense
+    return find_first_of(wxStringBase(sz, n), nStart);
+}

 
 

-  // must not share string and must have enough space
-  register wxStringData* pData = GetStringData();
-  if ( pData->IsShared() || (nLen > pData->nAllocLength) ) {
-    // can't work with old buffer, get new one
-    pData->Unlock();
-    AllocBuffer(nLen);
-  }
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length() - 1;
+    }
+    else
+    {
+        wxASSERT_MSG( nStart <= length(),
+                        _T("invalid index in find_last_of()") );
+    }

 
 

-  wxASSERT( !GetStringData()->IsShared() );  // we must be the only owner
+    size_t len = wxStrlen(sz);
+
+    for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+    {
+        if ( wxTmemchr(sz, *p, len) )
+            return p - c_str();
+    }
+
+    return npos;

 }
 
 }
 

-// get the pointer to writable buffer of (at least) nLen bytes
-char *wxString::GetWriteBuf(int nLen)
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart,
+                                   size_t n) const

 {
 {

-  AllocBeforeWrite(nLen);
+    return find_last_of(wxStringBase(sz, n), nStart);
+}

 
 

-  wxASSERT( GetStringData()->nRefs == 1 );
-  GetStringData()->Validate(FALSE);
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length();
+    }
+    else
+    {
+        wxASSERT( nStart <= length() );
+    }

 
 

-  return m_pchData;
+    size_t len = wxStrlen(sz);
+
+    size_t i;
+    for(i = nStart; i < this->length(); ++i)
+    {
+        if (!wxTmemchr(sz, *(c_str() + i), len))
+            break;
+    }
+
+    if(i == this->length())
+         return npos;
+     else
+        return i;

 }
 
 }
 

-// put string back in a reasonable state after GetWriteBuf
-void wxString::UngetWriteBuf()
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart,
+                                       size_t n) const

 {
 {

-  GetStringData()->nDataLength = strlen(m_pchData);
-  GetStringData()->Validate(TRUE);
+    return find_first_not_of(wxStringBase(sz, n), nStart);

 }
 
 }
 

-// dtor frees memory if no other strings use it
-wxString::~wxString()
+size_t wxStringBase::find_first_not_of(wxChar ch, size_t nStart) const

 {
 {

-  GetStringData()->Unlock();
+    wxASSERT( nStart <= length() );
+
+    for ( const wxChar *p = c_str() + nStart; *p; p++ )
+    {
+        if ( *p != ch )
+            return p - c_str();
+    }
+
+    return npos;

 }
 
 }
 

-// ---------------------------------------------------------------------------
-// data access
-// ---------------------------------------------------------------------------
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length() - 1;
+    }
+    else
+    {
+        wxASSERT( nStart <= length() );
+    }

 
 

-// all functions are inline in string.h
+    size_t len = wxStrlen(sz);

 
 

-// ---------------------------------------------------------------------------
-// assignment operators
-// ---------------------------------------------------------------------------
+    for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+    {
+        if ( !wxTmemchr(sz, *p,len) )
+             return p - c_str();
+    }
+
+    return npos;
+}

 
 

-// helper function: does real copy 
-void wxString::AssignCopy(size_t nSrcLen, const char *pszSrcData)
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart,
+                                      size_t n) const

 {
 {

-  if ( nSrcLen == 0 ) {
-    Reinit();
-  }
-  else {
-    AllocBeforeWrite(nSrcLen);
-    memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(char));
-    GetStringData()->nDataLength = nSrcLen;
-    m_pchData[nSrcLen] = '\0';
-  }
+    return find_last_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_last_not_of(wxChar ch, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length() - 1;
+    }
+    else
+    {
+        wxASSERT( nStart <= length() );
+    }
+
+    for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+    {
+        if ( *p != ch )
+            return p - c_str();
+    }
+
+    return npos;
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+                                    const wxChar *sz)
+{
+  wxASSERT_MSG( nStart <= length(),
+                _T("index out of bounds in wxStringBase::replace") );
+  size_t strLen = length() - nStart;
+  nLen = strLen < nLen ? strLen : nLen;
+
+  wxStringBase strTmp;
+  strTmp.reserve(length()); // micro optimisation to avoid multiple mem allocs
+
+  if ( nStart != 0 )
+    strTmp.append(c_str(), nStart);
+  strTmp.append(sz);
+  strTmp.append(c_str() + nStart + nLen);
+
+  swap(strTmp);
+  return *this;
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+                                    size_t nCount, wxChar ch)
+{
+  return replace(nStart, nLen, wxStringBase(nCount, ch).c_str());
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+                                    const wxStringBase& str,
+                                    size_t nStart2, size_t nLen2)
+{
+  return replace(nStart, nLen, str.substr(nStart2, nLen2));
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+                                    const wxChar* sz, size_t nCount)
+{
+  return replace(nStart, nLen, wxStringBase(sz, nCount).c_str());
+}
+
+wxStringBase wxStringBase::substr(size_t nStart, size_t nLen) const
+{
+  if ( nLen == npos )
+    nLen = length() - nStart;
+  return wxStringBase(*this, nStart, nLen);

 }
 
 // assigns one string to another
 }
 
 // assigns one string to another

-wxString& wxString::operator=(const wxString& stringSrc)
+wxStringBase& wxStringBase::operator=(const wxStringBase& stringSrc)

 {
   wxASSERT( stringSrc.GetStringData()->IsValid() );
 
 {
   wxASSERT( stringSrc.GetStringData()->IsValid() );
 


@@ -362,178 +792,462 @@ wxString& wxString::operator=(const wxString& stringSrc)
 }
 
 // assigns a single character
 }
 
 // assigns a single character

-wxString& wxString::operator=(char ch)
+wxStringBase& wxStringBase::operator=(wxChar ch)

 {
 {

-  AssignCopy(1, &ch);
+  if ( !AssignCopy(1, &ch) ) {
+    wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(wxChar)") );
+  }

   return *this;
 }
 
 // assigns C string
   return *this;
 }
 
 // assigns C string

-wxString& wxString::operator=(const char *psz)
+wxStringBase& wxStringBase::operator=(const wxChar *psz)

 {
 {

-  AssignCopy(Strlen(psz), psz);
+  if ( !AssignCopy(wxStrlen(psz), psz) ) {
+    wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(const wxChar *)") );
+  }

   return *this;
 }
 
   return *this;
 }
 

-// same as 'signed char' variant
-wxString& wxString::operator=(const unsigned char* psz)
+// helper function: does real copy
+bool wxStringBase::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)

 {
 {

-  *this = (const char *)psz;
-  return *this;
-}
-
-wxString& wxString::operator=(const wchar_t *pwz)
-{
-  wxString str(pwz);
-  *this = str;
-  return *this;
+  if ( nSrcLen == 0 ) {
+    Reinit();
+  }
+  else {
+    if ( !AllocBeforeWrite(nSrcLen) ) {
+      // allocation failure handled by caller
+      return false;
+    }
+    memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
+    GetStringData()->nDataLength = nSrcLen;
+    m_pchData[nSrcLen] = wxT('\0');
+  }
+  return true;

 }
 
 // ---------------------------------------------------------------------------
 // string concatenation
 // ---------------------------------------------------------------------------
 
 }
 
 // ---------------------------------------------------------------------------
 // string concatenation
 // ---------------------------------------------------------------------------
 

-// concatenate two sources
-// NB: assume that 'this' is a new wxString object
-void wxString::ConcatCopy(int nSrc1Len, const char *pszSrc1Data,
-                        int nSrc2Len, const char *pszSrc2Data)
-{
-  int nNewLen = nSrc1Len + nSrc2Len;
-  if ( nNewLen != 0 )
-  {
-    AllocBuffer(nNewLen);
-    memcpy(m_pchData, pszSrc1Data, nSrc1Len*sizeof(char));
-    memcpy(m_pchData + nSrc1Len, pszSrc2Data, nSrc2Len*sizeof(char));
-  }
-}
-

 // add something to this string
 // add something to this string

-void wxString::ConcatSelf(int nSrcLen, const char *pszSrcData)
+bool wxStringBase::ConcatSelf(size_t nSrcLen, const wxChar *pszSrcData,
+                              size_t nMaxLen)

 {
 {

+  STATISTICS_ADD(SummandLength, nSrcLen);
+
+  nSrcLen = nSrcLen < nMaxLen ? nSrcLen : nMaxLen;
+

   // concatenating an empty string is a NOP
   // concatenating an empty string is a NOP

-  if ( nSrcLen != 0 ) {
-    register wxStringData *pData = GetStringData();
+  if ( nSrcLen > 0 ) {
+    wxStringData *pData = GetStringData();
+    size_t nLen = pData->nDataLength;
+    size_t nNewLen = nLen + nSrcLen;

 
     // alloc new buffer if current is too small
 
     // alloc new buffer if current is too small

-    if ( pData->IsShared() || 
-         pData->nDataLength + nSrcLen > pData->nAllocLength ) {
-      // we have to grow the buffer, use the ConcatCopy routine
-      // (which will allocate memory)
+    if ( pData->IsShared() ) {
+      STATISTICS_ADD(ConcatHit, 0);
+
+      // we have to allocate another buffer

       wxStringData* pOldData = GetStringData();
       wxStringData* pOldData = GetStringData();

-      ConcatCopy(pOldData->nDataLength, m_pchData, nSrcLen, pszSrcData);
+      if ( !AllocBuffer(nNewLen) ) {
+          // allocation failure handled by caller
+          return false;
+      }
+      memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));

       pOldData->Unlock();
     }
       pOldData->Unlock();
     }

+    else if ( nNewLen > pData->nAllocLength ) {
+      STATISTICS_ADD(ConcatHit, 0);
+
+      reserve(nNewLen);
+      // we have to grow the buffer
+      if ( capacity() < nNewLen ) {
+          // allocation failure handled by caller
+          return false;
+      }
+    }

     else {
     else {

-      // fast concatenation when buffer big enough
-      memcpy(m_pchData + pData->nDataLength, pszSrcData, nSrcLen*sizeof(char));
-      pData->nDataLength += nSrcLen;
+      STATISTICS_ADD(ConcatHit, 1);
+
+      // the buffer is already big enough
+    }
+
+    // should be enough space
+    wxASSERT( nNewLen <= GetStringData()->nAllocLength );

 
 

-      // should be enough space
-      wxASSERT( pData->nDataLength <= pData->nAllocLength );
+    // fast concatenation - all is done in our buffer
+    memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
+
+    m_pchData[nNewLen] = wxT('\0');          // put terminating '\0'
+    GetStringData()->nDataLength = nNewLen; // and fix the length
+  }
+  //else: the string to append was empty
+  return true;
+}
+
+// ---------------------------------------------------------------------------
+// simple sub-string extraction
+// ---------------------------------------------------------------------------

 
 

-      m_pchData[pData->nDataLength] = '\0';   // put terminating '\0'
+// helper function: clone the data attached to this string
+bool wxStringBase::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+{
+  if ( nCopyLen == 0 ) {
+    dest.Init();
+  }
+  else {
+    if ( !dest.AllocBuffer(nCopyLen) ) {
+      // allocation failure handled by caller
+      return false;

     }
     }

+    memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));

   }
   }

+  return true;

 }
 
 }
 

-/*
- * string may be concatenated with other string, C string or a character
- */
+#endif // !wxUSE_STL
+
+#if !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)

 
 

-void wxString::operator+=(const wxString& string)
+#if !wxUSE_STL
+    #define STRINGCLASS wxStringBase
+#else
+    #define STRINGCLASS wxString
+#endif
+
+static inline int wxDoCmp(const wxChar* s1, size_t l1,
+                          const wxChar* s2, size_t l2)

 {
 {

-  wxASSERT( string.GetStringData()->IsValid() );
+    if( l1 == l2 )
+        return wxTmemcmp(s1, s2, l1);
+    else if( l1 < l2 )
+    {
+        int ret = wxTmemcmp(s1, s2, l1);
+        return ret == 0 ? -1 : ret;
+    }
+    else
+    {
+        int ret = wxTmemcmp(s1, s2, l2);
+        return ret == 0 ? +1 : ret;
+    }
+}

 
 

-  ConcatSelf(string.Len(), string);
+int STRINGCLASS::compare(const wxStringBase& str) const
+{
+    return ::wxDoCmp(data(), length(), str.data(), str.length());

 }
 
 }
 

-void wxString::operator+=(const char *psz)
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+                         const wxStringBase& str) const

 {
 {

-  ConcatSelf(Strlen(psz), psz);
+    wxASSERT(nStart <= length());
+    size_type strLen = length() - nStart;
+    nLen = strLen < nLen ? strLen : nLen;
+    return ::wxDoCmp(data() + nStart, nLen, str.data(), str.length());

 }
 
 }
 

-void wxString::operator+=(char ch)
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+                         const wxStringBase& str,
+                         size_t nStart2, size_t nLen2) const

 {
 {

-  ConcatSelf(1, &ch);
+    wxASSERT(nStart <= length());
+    wxASSERT(nStart2 <= str.length());
+    size_type strLen  =     length() - nStart,
+              strLen2 = str.length() - nStart2;
+    nLen  = strLen  < nLen  ? strLen  : nLen;
+    nLen2 = strLen2 < nLen2 ? strLen2 : nLen2;
+    return ::wxDoCmp(data() + nStart, nLen, str.data() + nStart2, nLen2);

 }
 
 }
 

-/*
- * Same as above but return the result
- */  
+int STRINGCLASS::compare(const wxChar* sz) const
+{
+    size_t nLen = wxStrlen(sz);
+    return ::wxDoCmp(data(), length(), sz, nLen);
+}

 
 

-wxString& wxString::operator<<(const wxString& string)
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+                         const wxChar* sz, size_t nCount) const

 {
 {

-  wxASSERT( string.GetStringData()->IsValid() );
+    wxASSERT(nStart <= length());
+    size_type strLen = length() - nStart;
+    nLen = strLen < nLen ? strLen : nLen;
+    if( nCount == npos )
+        nCount = wxStrlen(sz);

 
 

-  ConcatSelf(string.Len(), string);
-  return *this;
+    return ::wxDoCmp(data() + nStart, nLen, sz, nCount);

 }
 
 }
 

-wxString& wxString::operator<<(const char *psz)
+#undef STRINGCLASS
+
+#endif // !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+// ===========================================================================
+// wxString class core
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// construction and conversion
+// ---------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+
+// from multibyte string
+wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
+{
+    // if nLength != npos, then we have to make a NULL-terminated copy
+    // of first nLength bytes of psz first because the input buffer to MB2WC
+    // must always be NULL-terminated:
+    wxCharBuffer inBuf((const char *)NULL);
+    if (nLength != npos)
+    {
+        wxASSERT( psz != NULL );
+        wxCharBuffer tmp(nLength);
+        memcpy(tmp.data(), psz, nLength);
+        tmp.data()[nLength] = '\0';
+        inBuf = tmp;
+        psz = inBuf.data();
+    }
+
+    // first get the size of the buffer we need
+    size_t nLen;
+    if ( psz )
+    {
+        // calculate the needed size ourselves or use the provided one
+        if (nLength == npos)
+            nLen = strlen(psz);
+        else
+            nLen = nLength;
+    }
+    else
+    {
+        // nothing to convert
+        nLen = 0;
+    }
+
+
+    // anything to do?
+    if ( (nLen != 0) && (nLen != (size_t)-1) )
+    {
+        //Convert string
+        size_t nRealSize;
+        wxWCharBuffer theBuffer = conv.cMB2WC(psz, nLen, &nRealSize);
+
+        //Copy
+        if (nRealSize)
+            assign( theBuffer.data() , nRealSize - 1 );
+    }
+}
+
+//Convert wxString in Unicode mode to a multi-byte string
+const wxCharBuffer wxString::mb_str(wxMBConv& conv) const

 {
 {

-  ConcatSelf(Strlen(psz), psz);
+    size_t dwOutSize;
+    return conv.cWC2MB(c_str(), length(), &dwOutSize);
+}
+
+#else // ANSI
+
+#if wxUSE_WCHAR_T
+// from wide string
+wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength)
+{
+    // if nLength != npos, then we have to make a NULL-terminated copy
+    // of first nLength chars of psz first because the input buffer to WC2MB
+    // must always be NULL-terminated:
+    wxWCharBuffer inBuf((const wchar_t *)NULL);
+    if (nLength != npos)
+    {
+        wxASSERT( pwz != NULL );
+        wxWCharBuffer tmp(nLength);
+        memcpy(tmp.data(), pwz, nLength * sizeof(wchar_t));
+        tmp.data()[nLength] = '\0';
+        inBuf = tmp;
+        pwz = inBuf.data();
+    }
+
+    // first get the size of the buffer we need
+    size_t nLen;
+    if ( pwz )
+    {
+        // calculate the needed size ourselves or use the provided one
+        if (nLength == npos)
+            nLen = wxWcslen(pwz);
+        else
+            nLen = nLength;
+    }
+    else
+    {
+        // nothing to convert
+        nLen = 0;
+    }
+
+    // anything to do?
+    if ( (nLen != 0) && (nLen != (size_t)-1) )
+    {
+        //Convert string
+        size_t nRealSize;
+        wxCharBuffer theBuffer = conv.cWC2MB(pwz, nLen, &nRealSize);
+
+        //Copy
+        if (nRealSize)
+            assign( theBuffer.data() , nRealSize - 1 );
+    }
+}
+
+//Converts this string to a wide character string if unicode
+//mode is not enabled and wxUSE_WCHAR_T is enabled
+const wxWCharBuffer wxString::wc_str(wxMBConv& conv) const
+{
+    size_t dwOutSize;
+    return conv.cMB2WC(c_str(), length(), &dwOutSize);
+}
+
+#endif // wxUSE_WCHAR_T
+
+#endif // Unicode/ANSI
+
+// shrink to minimal size (releasing extra memory)
+bool wxString::Shrink()
+{
+  wxString tmp(begin(), end());
+  swap(tmp);
+  return tmp.length() == length();
+}
+
+#if !wxUSE_STL
+// get the pointer to writable buffer of (at least) nLen bytes
+wxChar *wxString::GetWriteBuf(size_t nLen)
+{
+  if ( !AllocBeforeWrite(nLen) ) {
+    // allocation failure handled by caller
+    return NULL;
+  }
+
+  wxASSERT( GetStringData()->nRefs == 1 );
+  GetStringData()->Validate(false);
+
+  return m_pchData;
+}
+
+// put string back in a reasonable state after GetWriteBuf
+void wxString::UngetWriteBuf()
+{
+  GetStringData()->nDataLength = wxStrlen(m_pchData);
+  GetStringData()->Validate(true);
+}
+
+void wxString::UngetWriteBuf(size_t nLen)
+{
+  GetStringData()->nDataLength = nLen;
+  GetStringData()->Validate(true);
+}
+#endif
+
+// ---------------------------------------------------------------------------
+// data access
+// ---------------------------------------------------------------------------
+
+// all functions are inline in string.h
+
+// ---------------------------------------------------------------------------
+// assignment operators
+// ---------------------------------------------------------------------------
+
+#if !wxUSE_UNICODE
+
+// same as 'signed char' variant
+wxString& wxString::operator=(const unsigned char* psz)
+{
+  *this = (const char *)psz;

   return *this;
 }
 
   return *this;
 }
 

-wxString& wxString::operator<<(char ch)
+#if wxUSE_WCHAR_T
+wxString& wxString::operator=(const wchar_t *pwz)

 {
 {

-  ConcatSelf(1, &ch);
+  wxString str(pwz);
+  swap(str);

   return *this;
 }
   return *this;
 }

+#endif

 
 

-/* 
+#endif
+
+/*

  * concatenation functions come in 5 flavours:
  *  string + string
  *  char   + string      and      string + char
  *  C str  + string      and      string + C str
  */
 
  * concatenation functions come in 5 flavours:
  *  string + string
  *  char   + string      and      string + char
  *  C str  + string      and      string + C str
  */
 

-wxString operator+(const wxString& string1, const wxString& string2)
+wxString operator+(const wxString& str1, const wxString& str2)

 {
 {

-  wxASSERT( string1.GetStringData()->IsValid() );
-  wxASSERT( string2.GetStringData()->IsValid() );
+#if !wxUSE_STL
+  wxASSERT( str1.GetStringData()->IsValid() );
+  wxASSERT( str2.GetStringData()->IsValid() );
+#endif
+
+  wxString s = str1;
+  s += str2;

 
 

-  wxString s;
-  s.ConcatCopy(string1.GetStringData()->nDataLength, string1.m_pchData,
-               string2.GetStringData()->nDataLength, string2.m_pchData);

   return s;
 }
 
   return s;
 }
 

-wxString operator+(const wxString& string1, char ch)
+wxString operator+(const wxString& str, wxChar ch)

 {
 {

-  wxASSERT( string1.GetStringData()->IsValid() );
+#if !wxUSE_STL
+  wxASSERT( str.GetStringData()->IsValid() );
+#endif
+
+  wxString s = str;
+  s += ch;

 
 

-  wxString s;
-  s.ConcatCopy(string1.GetStringData()->nDataLength, string1.m_pchData, 1, &ch);

   return s;
 }
 
   return s;
 }
 

-wxString operator+(char ch, const wxString& string)
+wxString operator+(wxChar ch, const wxString& str)

 {
 {

-  wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+  wxASSERT( str.GetStringData()->IsValid() );
+#endif
+
+  wxString s = ch;
+  s += str;

 
 

-  wxString s;
-  s.ConcatCopy(1, &ch, string.GetStringData()->nDataLength, string.m_pchData);

   return s;
 }
 
   return s;
 }
 

-wxString operator+(const wxString& string, const char *psz)
+wxString operator+(const wxString& str, const wxChar *psz)

 {
 {

-  wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+  wxASSERT( str.GetStringData()->IsValid() );
+#endif

 
   wxString s;
 
   wxString s;

-  s.ConcatCopy(string.GetStringData()->nDataLength, string.m_pchData,
-               Strlen(psz), psz);
+  if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
+    wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+  }
+  s += str;
+  s += psz;
+

   return s;
 }
 
   return s;
 }
 

-wxString operator+(const char *psz, const wxString& string)
+wxString operator+(const wxChar *psz, const wxString& str)

 {
 {

-  wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+  wxASSERT( str.GetStringData()->IsValid() );
+#endif

 
   wxString s;
 
   wxString s;

-  s.ConcatCopy(Strlen(psz), psz,
-               string.GetStringData()->nDataLength, string.m_pchData);
+  if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
+    wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+  }
+  s = psz;
+  s += str;
+

   return s;
 }
 
   return s;
 }
 


@@ -541,60 +1255,209 @@ wxString operator+(const char *psz, const wxString& string)
 // other common string functions
 // ===========================================================================
 
 // other common string functions
 // ===========================================================================
 

-// ---------------------------------------------------------------------------
-// simple sub-string extraction
-// ---------------------------------------------------------------------------
+int wxString::Cmp(const wxString& s) const
+{
+    return compare(s);
+}

 
 

-// helper function: clone the data attached to this string
-void wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+int wxString::Cmp(const wxChar* psz) const
+{
+    return compare(psz);
+}
+
+static inline int wxDoCmpNoCase(const wxChar* s1, size_t l1,
+                                const wxChar* s2, size_t l2)

 {
 {

-  if ( nCopyLen == 0 )
+    size_t i;
+
+    if( l1 == l2 )
+    {
+        for(i = 0; i < l1; ++i)
+        {
+            if(wxTolower(s1[i]) != wxTolower(s2[i]))
+                break;
+        }
+        return i == l1 ? 0 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
+    }
+    else if( l1 < l2 )
+    {
+        for(i = 0; i < l1; ++i)
+        {
+            if(wxTolower(s1[i]) != wxTolower(s2[i]))
+                break;
+        }
+        return i == l1 ? -1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
+    }
+    else
+    {
+        for(i = 0; i < l2; ++i)
+        {
+            if(wxTolower(s1[i]) != wxTolower(s2[i]))
+                break;
+        }
+        return i == l2 ? 1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
+    }
+}
+
+int wxString::CmpNoCase(const wxString& s) const
+{
+    return wxDoCmpNoCase(data(), length(), s.data(), s.length());
+}
+
+int wxString::CmpNoCase(const wxChar* psz) const
+{
+    int nLen = wxStrlen(psz);
+
+    return wxDoCmpNoCase(data(), length(), psz, nLen);
+}
+
+
+#if wxUSE_UNICODE
+
+#ifdef __MWERKS__
+#ifndef __SCHAR_MAX__
+#define __SCHAR_MAX__ 127
+#endif
+#endif
+
+wxString wxString::FromAscii(const char *ascii)
+{
+    if (!ascii)
+       return wxEmptyString;
+
+    size_t len = strlen( ascii );
+    wxString res;
+
+    if ( len )
+    {
+        wxStringBuffer buf(res, len);
+
+        wchar_t *dest = buf;
+
+        for ( ;; )
+        {
+           if ( (*dest++ = (wchar_t)(unsigned char)*ascii++) == L'\0' )
+               break;
+        }
+    }
+
+    return res;
+}
+
+wxString wxString::FromAscii(const char ascii)
+{
+    // What do we do with '\0' ?
+
+    wxString res;
+    res += (wchar_t)(unsigned char) ascii;
+
+    return res;
+}
+
+const wxCharBuffer wxString::ToAscii() const
+{
+    // this will allocate enough space for the terminating NUL too
+    wxCharBuffer buffer(length());
+
+
+    char *dest = buffer.data();
+
+    const wchar_t *pwc = c_str();
+    for ( ;; )
+    {
+        *dest++ = (char)(*pwc > SCHAR_MAX ? wxT('_') : *pwc);
+
+        // the output string can't have embedded NULs anyhow, so we can safely
+        // stop at first of them even if we do have any
+        if ( !*pwc++ )
+            break;
+    }
+
+    return buffer;
+}
+
+#endif // Unicode
+
+// extract string of length nCount starting at nFirst
+wxString wxString::Mid(size_t nFirst, size_t nCount) const
+{
+  size_t nLen = length();
+
+  // default value of nCount is npos and means "till the end"
+  if ( nCount == npos )

   {
   {

-    dest.Init();
+    nCount = nLen - nFirst;

   }
   }

-  else
+
+  // out-of-bounds requests return sensible things
+  if ( nFirst + nCount > nLen )

   {
   {

-    dest.AllocBuffer(nCopyLen);
-    memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(char));
+    nCount = nLen - nFirst;
+  }
+
+  if ( nFirst > nLen )
+  {
+    // AllocCopy() will return empty string
+    nCount = 0;

   }
   }

+
+  wxString dest(*this, nFirst, nCount);
+  if ( dest.length() != nCount ) {
+      wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+  }
+
+  return dest;

 }
 
 }
 

-// extract string of length nCount starting at nFirst
-// default value of nCount is 0 and means "till the end"
-wxString wxString::Mid(size_t nFirst, size_t nCount) const
+// check that the string starts with prefix and return the rest of the string
+// in the provided pointer if it is not NULL, otherwise return false
+bool wxString::StartsWith(const wxChar *prefix, wxString *rest) const

 {
 {

-  // out-of-bounds requests return sensible things
-  if ( nCount == 0 )
-    nCount = GetStringData()->nDataLength - nFirst;
+    wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );

 
 

-  if ( nFirst + nCount > (size_t)GetStringData()->nDataLength )
-    nCount = GetStringData()->nDataLength - nFirst;
-  if ( nFirst > (size_t)GetStringData()->nDataLength )
-    nCount = 0;
+    // first check if the beginning of the string matches the prefix: note
+    // that we don't have to check that we don't run out of this string as
+    // when we reach the terminating NUL, either prefix string ends too (and
+    // then it's ok) or we break out of the loop because there is no match
+    const wxChar *p = c_str();
+    while ( *prefix )
+    {
+        if ( *prefix++ != *p++ )
+        {
+            // no match
+            return false;
+        }
+    }

 
 

-  wxString dest;
-  AllocCopy(dest, nCount, nFirst);
-  return dest;
+    if ( rest )
+    {
+        // put the rest of the string into provided pointer
+        *rest = p;
+    }
+
+    return true;

 }
 
 // extract nCount last (rightmost) characters
 wxString wxString::Right(size_t nCount) const
 {
 }
 
 // extract nCount last (rightmost) characters
 wxString wxString::Right(size_t nCount) const
 {

-  if ( nCount > (size_t)GetStringData()->nDataLength )
-    nCount = GetStringData()->nDataLength;
+  if ( nCount > length() )
+    nCount = length();

 
 

-  wxString dest;
-  AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount);
+  wxString dest(*this, length() - nCount, nCount);
+  if ( dest.length() != nCount ) {
+    wxFAIL_MSG( _T("out of memory in wxString::Right") );
+  }

   return dest;
 }
 
 // get all characters after the last occurence of ch
 // (returns the whole string if ch not found)
   return dest;
 }
 
 // get all characters after the last occurence of ch
 // (returns the whole string if ch not found)

-wxString wxString::Right(char ch) const
+wxString wxString::AfterLast(wxChar ch) const

 {
   wxString str;
 {
   wxString str;

-  int iPos = Find(ch, TRUE);
-  if ( iPos == NOT_FOUND )
+  int iPos = Find(ch, true);
+  if ( iPos == wxNOT_FOUND )

     str = *this;
   else
     str = c_str() + iPos + 1;
     str = *this;
   else
     str = c_str() + iPos + 1;


@@ -605,32 +1468,32 @@ wxString wxString::Right(char ch) const
 // extract nCount first (leftmost) characters
 wxString wxString::Left(size_t nCount) const
 {
 // extract nCount first (leftmost) characters
 wxString wxString::Left(size_t nCount) const
 {

-  if ( nCount > (size_t)GetStringData()->nDataLength )
-    nCount = GetStringData()->nDataLength;
+  if ( nCount > length() )
+    nCount = length();

 
 

-  wxString dest;
-  AllocCopy(dest, nCount, 0);
+  wxString dest(*this, 0, nCount);
+  if ( dest.length() != nCount ) {
+    wxFAIL_MSG( _T("out of memory in wxString::Left") );
+  }

   return dest;
 }
 
 // get all characters before the first occurence of ch
 // (returns the whole string if ch not found)
   return dest;
 }
 
 // get all characters before the first occurence of ch
 // (returns the whole string if ch not found)

-wxString wxString::Left(char ch) const
+wxString wxString::BeforeFirst(wxChar ch) const

 {
 {

-  wxString str;
-  for ( const char *pc = m_pchData; *pc != '\0' && *pc != ch; pc++ )
-    str += *pc;
-
-  return str;
+  int iPos = Find(ch);
+  if ( iPos == wxNOT_FOUND ) iPos = length();
+  return wxString(*this, 0, iPos);

 }
 
 /// get all characters before the last occurence of ch
 /// (returns empty string if ch not found)
 }
 
 /// get all characters before the last occurence of ch
 /// (returns empty string if ch not found)

-wxString wxString::Before(char ch) const
+wxString wxString::BeforeLast(wxChar ch) const

 {
   wxString str;
 {
   wxString str;

-  int iPos = Find(ch, TRUE);
-  if ( iPos != NOT_FOUND && iPos != 0 )
+  int iPos = Find(ch, true);
+  if ( iPos != wxNOT_FOUND && iPos != 0 )

     str = wxString(c_str(), iPos);
 
   return str;
     str = wxString(c_str(), iPos);
 
   return str;


@@ -638,28 +1501,33 @@ wxString wxString::Before(char ch) const
 
 /// get all characters after the first occurence of ch
 /// (returns empty string if ch not found)
 
 /// get all characters after the first occurence of ch
 /// (returns empty string if ch not found)

-wxString wxString::After(char ch) const
+wxString wxString::AfterFirst(wxChar ch) const

 {
   wxString str;
   int iPos = Find(ch);
 {
   wxString str;
   int iPos = Find(ch);

-  if ( iPos != NOT_FOUND )
+  if ( iPos != wxNOT_FOUND )

     str = c_str() + iPos + 1;
 
   return str;
 }
 
 // replace first (or all) occurences of some substring with another one
     str = c_str() + iPos + 1;
 
   return str;
 }
 
 // replace first (or all) occurences of some substring with another one

-uint wxString::Replace(const char *szOld, const char *szNew, bool bReplaceAll)
+size_t
+wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)

 {
 {

-  uint uiCount = 0;   // count of replacements made
+    // if we tried to replace an empty string we'd enter an infinite loop below
+    wxCHECK_MSG( szOld && *szOld && szNew, 0,
+                 _T("wxString::Replace(): invalid parameter") );

 
 

-  uint uiOldLen = Strlen(szOld);
+  size_t uiCount = 0;   // count of replacements made
+
+  size_t uiOldLen = wxStrlen(szOld);

 
   wxString strTemp;
 
   wxString strTemp;

-  const char *pCurrent = m_pchData;
-  const char *pSubstr;           
-  while ( *pCurrent != '\0' ) {
-    pSubstr = strstr(pCurrent, szOld);
+  const wxChar *pCurrent = c_str();
+  const wxChar *pSubstr;
+  while ( *pCurrent != wxT('\0') ) {
+    pSubstr = wxStrstr(pCurrent, szOld);

     if ( pSubstr == NULL ) {
       // strTemp is unused if no replacements were made, so avoid the copy
       if ( uiCount == 0 )
     if ( pSubstr == NULL ) {
       // strTemp is unused if no replacements were made, so avoid the copy
       if ( uiCount == 0 )


@@ -670,7 +1538,12 @@ uint wxString::Replace(const char *szOld, const char *szNew, bool bReplaceAll)
     }
     else {
       // take chars before match
     }
     else {
       // take chars before match

-      strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent);
+      size_type len = strTemp.length();
+      strTemp.append(pCurrent, pSubstr - pCurrent);
+      if ( strTemp.length() != (size_t)(len + pSubstr - pCurrent) ) {
+        wxFAIL_MSG( _T("out of memory in wxString::Replace") );
+        return 0;
+      }

       strTemp += szNew;
       pCurrent = pSubstr + uiOldLen;  // restart after match
 
       strTemp += szNew;
       pCurrent = pSubstr + uiOldLen;  // restart after match
 


@@ -685,100 +1558,67 @@ uint wxString::Replace(const char *szOld, const char *szNew, bool bReplaceAll)
   }
 
   // only done if there were replacements, otherwise would have returned above
   }
 
   // only done if there were replacements, otherwise would have returned above

-  *this = strTemp;
+  swap(strTemp);

 
   return uiCount;
 }
 
 bool wxString::IsAscii() const
 {
 
   return uiCount;
 }
 
 bool wxString::IsAscii() const
 {

-  const char *s = (const char*) *this;
+  const wxChar *s = (const wxChar*) *this;

   while(*s){
   while(*s){

-    if(!isascii(*s)) return(FALSE);
+    if(!isascii(*s)) return(false);

     s++;
   }
     s++;
   }

-  return(TRUE);
+  return(true);

 }
 }

-  
+

 bool wxString::IsWord() const
 {
 bool wxString::IsWord() const
 {

-  const char *s = (const char*) *this;
+  const wxChar *s = (const wxChar*) *this;

   while(*s){
   while(*s){

-    if(!isalpha(*s)) return(FALSE);
+    if(!wxIsalpha(*s)) return(false);

     s++;
   }
     s++;
   }

-  return(TRUE);
+  return(true);

 }
 }

-  
+

 bool wxString::IsNumber() const
 {
 bool wxString::IsNumber() const
 {

-  const char *s = (const char*) *this;
+  const wxChar *s = (const wxChar*) *this;
+  if (wxStrlen(s))
+     if ((s[0] == wxT('-')) || (s[0] == wxT('+'))) s++;

   while(*s){
   while(*s){

-    if(!isdigit(*s)) return(FALSE);
+    if(!wxIsdigit(*s)) return(false);

     s++;
   }
     s++;
   }

-  return(TRUE);
+  return(true);

 }
 
 }
 

-// kludge: we don't have declaraton of wxStringData here, so we add offsets
-//         manually to get to the "length" field of wxStringData structure
-bool   wxString::IsEmpty() const  { return Len() == 0;                        }
-

 wxString wxString::Strip(stripType w) const
 {
     wxString s = *this;
 wxString wxString::Strip(stripType w) const
 {
     wxString s = *this;

-    if ( w & leading ) s.Trim(FALSE);
-    if ( w & trailing ) s.Trim(TRUE);
+    if ( w & leading ) s.Trim(false);
+    if ( w & trailing ) s.Trim(true);

     return s;
 }
 
     return s;
 }
 

-/// case-insensitive strcmp() (platform independent)
-int Stricmp(const char *psz1, const char *psz2)
-{
-#if     defined(_MSC_VER)
-  return _stricmp(psz1, psz2);
-#elif defined(__BORLANDC__)
-  return stricmp(psz1, psz2);
-#elif   defined(__UNIX__) || defined(__GNUWIN32__)
-  return strcasecmp(psz1, psz2);
-#else
-  // almost all compilers/libraries provide this function (unfortunately under
-  // different names), that's why we don't implement our own which will surely
-  // be more efficient than this code (uncomment to use):
-  /*
-    register char c1, c2;
-    do {
-      c1 = tolower(*psz1++);
-      c2 = tolower(*psz2++);
-    } while ( c1 && (c1 == c2) );
-
-    return c1 - c2;
-  */
-  
-  #error  "Please define string case-insensitive compare for your OS/compiler"
-#endif  // OS/compiler
-}
-

 // ---------------------------------------------------------------------------
 // case conversion
 // ---------------------------------------------------------------------------
 
 wxString& wxString::MakeUpper()
 {
 // ---------------------------------------------------------------------------
 // case conversion
 // ---------------------------------------------------------------------------
 
 wxString& wxString::MakeUpper()
 {

-  CopyBeforeWrite();
-
-  for ( char *p = m_pchData; *p; p++ )
-    *p = (char)toupper(*p);
+  for ( iterator it = begin(), en = end(); it != en; ++it )
+    *it = (wxChar)wxToupper(*it);

 
   return *this;
 }
 
 wxString& wxString::MakeLower()
 {
 
   return *this;
 }
 
 wxString& wxString::MakeLower()
 {

-  CopyBeforeWrite();
-  
-  for ( char *p = m_pchData; *p; p++ )
-    *p = (char)tolower(*p);
+  for ( iterator it = begin(), en = end(); it != en; ++it )
+    *it = (wxChar)wxTolower(*it);

 
   return *this;
 }
 
   return *this;
 }


@@ -787,40 +1627,53 @@ wxString& wxString::MakeLower()
 // trimming and padding
 // ---------------------------------------------------------------------------
 
 // trimming and padding
 // ---------------------------------------------------------------------------
 

+// some compilers (VC++ 6.0 not to name them) return true for a call to
+// isspace('ê') in the C locale which seems to be broken to me, but we have to
+// live with this by checking that the character is a 7 bit one - even if this
+// may fail to detect some spaces (I don't know if Unicode doesn't have
+// space-like symbols somewhere except in the first 128 chars), it is arguably
+// still better than trimming away accented letters
+inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); }
+

 // trims spaces (in the sense of isspace) from left or right side
 wxString& wxString::Trim(bool bFromRight)
 {
 // trims spaces (in the sense of isspace) from left or right side
 wxString& wxString::Trim(bool bFromRight)
 {

-  CopyBeforeWrite();
-
-  if ( bFromRight )
-  {
-    // find last non-space character
-    char *psz = m_pchData + GetStringData()->nDataLength - 1;
-    while ( isspace(*psz) && (psz >= m_pchData) )
-      psz--;
-
-    // truncate at trailing space start
-    *++psz = '\0';
-    GetStringData()->nDataLength = psz - m_pchData;
-  }
-  else
+  // first check if we're going to modify the string at all
+  if ( !empty() &&
+       (
+        (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
+        (!bFromRight && wxSafeIsspace(GetChar(0u)))
+       )
+     )

   {
   {

-    // find first non-space character
-    const char *psz = m_pchData;
-    while ( isspace(*psz) )
-      psz++;
-
-    // fix up data and length
-    int nDataLength = GetStringData()->nDataLength - (psz - m_pchData);
-    memmove(m_pchData, psz, (nDataLength + 1)*sizeof(char));
-    GetStringData()->nDataLength = nDataLength;
+    if ( bFromRight )
+    {
+      // find last non-space character
+      iterator psz = begin() + length() - 1;
+      while ( wxSafeIsspace(*psz) && (psz >= begin()) )
+        psz--;
+
+      // truncate at trailing space start
+      *++psz = wxT('\0');
+      erase(psz, end());
+    }
+    else
+    {
+      // find first non-space character
+      iterator psz = begin();
+      while ( wxSafeIsspace(*psz) )
+        psz++;
+
+      // fix up data and length
+      erase(begin(), psz);
+    }

   }
 
   return *this;
 }
 
 // adds nCount characters chPad to the string from either side
   }
 
   return *this;
 }
 
 // adds nCount characters chPad to the string from either side

-wxString& wxString::Pad(size_t nCount, char chPad, bool bFromRight)
+wxString& wxString::Pad(size_t nCount, wxChar chPad, bool bFromRight)

 {
   wxString s(chPad, nCount);
 
 {
   wxString s(chPad, nCount);
 


@@ -829,7 +1682,7 @@ wxString& wxString::Pad(size_t nCount, char chPad, bool bFromRight)
   else
   {
     s += *this;
   else
   {
     s += *this;

-    *this = s;
+    swap(s);

   }
 
   return *this;
   }
 
   return *this;


@@ -838,112 +1691,264 @@ wxString& wxString::Pad(size_t nCount, char chPad, bool bFromRight)
 // truncate the string
 wxString& wxString::Truncate(size_t uiLen)
 {
 // truncate the string
 wxString& wxString::Truncate(size_t uiLen)
 {

-  *(m_pchData + uiLen) = '\0';
-  GetStringData()->nDataLength = uiLen;
+  if ( uiLen < Len() ) {
+    erase(begin() + uiLen, end());
+  }
+  //else: nothing to do, string is already short enough

 
   return *this;
 }
 
 // ---------------------------------------------------------------------------
 
   return *this;
 }
 
 // ---------------------------------------------------------------------------

-// finding (return NOT_FOUND if not found and index otherwise)
+// finding (return wxNOT_FOUND if not found and index otherwise)

 // ---------------------------------------------------------------------------
 
 // find a character
 // ---------------------------------------------------------------------------
 
 // find a character

-int wxString::Find(char ch, bool bFromEnd) const
+int wxString::Find(wxChar ch, bool bFromEnd) const

 {
 {

-  const char *psz = bFromEnd ? strrchr(m_pchData, ch) : strchr(m_pchData, ch);
+  size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);

 
 

-  return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+  return (idx == npos) ? wxNOT_FOUND : (int)idx;

 }
 
 // find a sub-string (like strstr)
 }
 
 // find a sub-string (like strstr)

-int wxString::Find(const char *pszSub) const
+int wxString::Find(const wxChar *pszSub) const
+{
+  size_type idx = find(pszSub);
+
+  return (idx == npos) ? wxNOT_FOUND : (int)idx;
+}
+
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+bool wxString::ToLong(long *val, int base) const
+{
+    wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToLong") );
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+    const wxChar *start = c_str();
+    wxChar *end;
+    *val = wxStrtol(start, &end, base);
+
+    // return true only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with
+    return !*end && (end != start);
+}
+
+bool wxString::ToULong(unsigned long *val, int base) const
+{
+    wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToULong") );
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+    const wxChar *start = c_str();
+    wxChar *end;
+    *val = wxStrtoul(start, &end, base);
+
+    // return true only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with
+    return !*end && (end != start);
+}
+
+bool wxString::ToDouble(double *val) const

 {
 {

-  const char *psz = strstr(m_pchData, pszSub);
+    wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToDouble") );
+
+    const wxChar *start = c_str();
+    wxChar *end;
+    *val = wxStrtod(start, &end);

 
 

-  return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+    // return true only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with
+    return !*end && (end != start);

 }
 
 // ---------------------------------------------------------------------------
 // formatted output
 // ---------------------------------------------------------------------------
 }
 
 // ---------------------------------------------------------------------------
 // formatted output
 // ---------------------------------------------------------------------------

-int wxString::Printf(const char *pszFormat, ...)
+
+/* static */
+wxString wxString::Format(const wxChar *pszFormat, ...)

 {
 {

-  va_list argptr;
-  va_start(argptr, pszFormat);
+    va_list argptr;
+    va_start(argptr, pszFormat);

 
 

-  int iLen = PrintfV(pszFormat, argptr);
+    wxString s;
+    s.PrintfV(pszFormat, argptr);

 
 

-  va_end(argptr);
+    va_end(argptr);

 
 

-  return iLen;
+    return s;

 }
 
 }
 

-int wxString::PrintfV(const char* pszFormat, va_list argptr)
+/* static */
+wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)

 {
 {

-  static char s_szScratch[1024];
-
-  int iLen = vsprintf(s_szScratch, pszFormat, argptr);
-  AllocBeforeWrite(iLen);
-  strcpy(m_pchData, s_szScratch);
-
-  return iLen;
+    wxString s;
+    s.PrintfV(pszFormat, argptr);
+    return s;

 }
 
 }
 

-#if 0
-int wxString::Scanf(const char *pszFormat, ...) const
+int wxString::Printf(const wxChar *pszFormat, ...)

 {
 {

-  va_list argptr;
-  va_start(argptr, pszFormat);
+    va_list argptr;
+    va_start(argptr, pszFormat);

 
 

-  int iLen = ScanfV(pszFormat, argptr);
+    int iLen = PrintfV(pszFormat, argptr);

 
 

-  va_end(argptr);
+    va_end(argptr);

 
 

-  return iLen;
+    return iLen;

 }
 
 }
 

-int wxString::ScanfV(const char *pszFormat, va_list argptr) const
+int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)

 {
 {

-#ifdef __WXMSW__
-  wxMessageBox("ScanfV not implemented");
-  return 0;
-#else
-  return vsscanf(c_str(), pszFormat, argptr);
+    int size = 1024;
+
+    for ( ;; )
+    {
+        wxStringBuffer tmp(*this, size + 1);
+        wxChar* buf = tmp;
+
+        if ( !buf )
+        {
+            // out of memory
+            return -1;
+        }
+
+        // wxVsnprintf() may modify the original arg pointer, so pass it
+        // only a copy
+        va_list argptrcopy;
+        wxVaCopy(argptrcopy, argptr);
+        int len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
+        va_end(argptrcopy);
+
+        // some implementations of vsnprintf() don't NUL terminate
+        // the string if there is not enough space for it so
+        // always do it manually
+        buf[size] = _T('\0');
+
+        // vsnprintf() may return either -1 (traditional Unix behaviour) or the
+        // total number of characters which would have been written if the
+        // buffer were large enough
+        // also, it may return an errno may be something like EILSEQ,
+        // in which case we need to break out
+        if ( (len >= 0 && len <= size)
+        // No EOVERFLOW on Windows nor Palm 6.0 nor OpenVMS
+#if !defined(__WXMSW__) && !defined(__WXPALMOS__) && !defined( __VMS )
+            || errno != EOVERFLOW

 #endif
 #endif

+            )
+        {
+            // ok, there was enough space
+            break;
+        }
+
+        // still not enough, double it again
+        size *= 2;
+    }
+
+    // we could have overshot
+    Shrink();
+
+    return Len();

 }
 }

-#endif

 
 // ----------------------------------------------------------------------------
 // misc other operations
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // misc other operations
 // ----------------------------------------------------------------------------

-bool wxString::Matches(const char *pszMask) const
-{
-  // check char by char
-  const char *pszTxt;
-  for ( pszTxt = c_str(); *pszMask != '\0'; pszMask++, pszTxt++ ) {
-    switch ( *pszMask ) {
-      case '?':
-        if ( *pszTxt == '\0' )
-          return FALSE;

 
 

-        pszTxt++;
+// returns true if the string matches the pattern which may contain '*' and
+// '?' metacharacters (as usual, '?' matches any character and '*' any number
+// of them)
+bool wxString::Matches(const wxChar *pszMask) const
+{
+    // I disable this code as it doesn't seem to be faster (in fact, it seems
+    // to be much slower) than the old, hand-written code below and using it
+    // here requires always linking with libregex even if the user code doesn't
+    // use it
+#if 0 // wxUSE_REGEX
+    // first translate the shell-like mask into a regex
+    wxString pattern;
+    pattern.reserve(wxStrlen(pszMask));
+
+    pattern += _T('^');
+    while ( *pszMask )
+    {
+        switch ( *pszMask )
+        {
+            case _T('?'):
+                pattern += _T('.');
+                break;
+
+            case _T('*'):
+                pattern += _T(".*");
+                break;
+
+            case _T('^'):
+            case _T('.'):
+            case _T('$'):
+            case _T('('):
+            case _T(')'):
+            case _T('|'):
+            case _T('+'):
+            case _T('\\'):
+                // these characters are special in a RE, quote them
+                // (however note that we don't quote '[' and ']' to allow
+                // using them for Unix shell like matching)
+                pattern += _T('\\');
+                // fall through
+
+            default:
+                pattern += *pszMask;
+        }
+

         pszMask++;
         pszMask++;

+    }
+    pattern += _T('$');
+
+    // and now use it
+    return wxRegEx(pattern, wxRE_NOSUB | wxRE_EXTENDED).Matches(c_str());
+#else // !wxUSE_REGEX
+  // TODO: this is, of course, awfully inefficient...
+
+  // the char currently being checked
+  const wxChar *pszTxt = c_str();
+
+  // the last location where '*' matched
+  const wxChar *pszLastStarInText = NULL;
+  const wxChar *pszLastStarInMask = NULL;
+
+match:
+  for ( ; *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
+    switch ( *pszMask ) {
+      case wxT('?'):
+        if ( *pszTxt == wxT('\0') )
+          return false;
+
+        // pszTxt and pszMask will be incremented in the loop statement
+

         break;
 
         break;
 

-      case '*':
+      case wxT('*'):

         {
         {

+          // remember where we started to be able to backtrack later
+          pszLastStarInText = pszTxt;
+          pszLastStarInMask = pszMask;
+

           // ignore special chars immediately following this one
           // ignore special chars immediately following this one

-          while ( *pszMask == '*' || *pszMask == '?' )
+          // (should this be an error?)
+          while ( *pszMask == wxT('*') || *pszMask == wxT('?') )

             pszMask++;
 
           // if there is nothing more, match
             pszMask++;
 
           // if there is nothing more, match

-          if ( *pszMask == '\0' )
-            return TRUE;
+          if ( *pszMask == wxT('\0') )
+            return true;

 
           // are there any other metacharacters in the mask?
 
           // are there any other metacharacters in the mask?

-          uint uiLenMask;
-          const char *pEndMask = strpbrk(pszMask, "*?");
+          size_t uiLenMask;
+          const wxChar *pEndMask = wxStrpbrk(pszMask, wxT("*?"));

 
           if ( pEndMask != NULL ) {
             // we have to match the string between two metachars
 
           if ( pEndMask != NULL ) {
             // we have to match the string between two metachars


@@ -951,13 +1956,13 @@ bool wxString::Matches(const char *pszMask) const
           }
           else {
             // we have to match the remainder of the string
           }
           else {
             // we have to match the remainder of the string

-            uiLenMask = strlen(pszMask);
+            uiLenMask = wxStrlen(pszMask);

           }
 
           wxString strToMatch(pszMask, uiLenMask);
           }
 
           wxString strToMatch(pszMask, uiLenMask);

-          const char* pMatch = strstr(pszTxt, strToMatch);
+          const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);

           if ( pMatch == NULL )
           if ( pMatch == NULL )

-            return FALSE;
+            return false;

 
           // -1 to compensate "++" in the loop
           pszTxt = pMatch + uiLenMask - 1;
 
           // -1 to compensate "++" in the loop
           pszTxt = pMatch + uiLenMask - 1;


@@ -967,230 +1972,152 @@ bool wxString::Matches(const char *pszMask) const
 
       default:
         if ( *pszMask != *pszTxt )
 
       default:
         if ( *pszMask != *pszTxt )

-          return FALSE;
+          return false;

         break;
     }
   }
 
   // match only if nothing left
         break;
     }
   }
 
   // match only if nothing left

-  return *pszTxt == '\0';
-}
-
-// ---------------------------------------------------------------------------
-// standard C++ library string functions
-// ---------------------------------------------------------------------------
-#ifdef  STD_STRING_COMPATIBILITY
-
-wxString& wxString::insert(size_t nPos, const wxString& str)
-{
-  wxASSERT( str.GetStringData()->IsValid() );
-  wxASSERT( nPos <= Len() );
-
-  wxString strTmp;
-  char *pc = strTmp.GetWriteBuf(Len() + str.Len());
-  strncpy(pc, c_str(), nPos);
-  strcpy(pc + nPos, str);
-  strcpy(pc + nPos + str.Len(), c_str() + nPos);
-  strTmp.UngetWriteBuf();
-  *this = strTmp;
-    
-  return *this; 
-}
-
-size_t wxString::find(const wxString& str, size_t nStart) const
-{
-  wxASSERT( str.GetStringData()->IsValid() );
-  wxASSERT( nStart <= Len() );
-
-  const char *p = strstr(c_str() + nStart, str);
-  
-  return p == NULL ? npos : p - c_str();
-}
-
-// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
-size_t wxString::find(const char* sz, size_t nStart, size_t n) const
-{
-  return find(wxString(sz, n == npos ? 0 : n), nStart);
-}
-#endif
-        
-size_t wxString::find(char ch, size_t nStart) const
-{
-  wxASSERT( nStart <= Len() );
-
-  const char *p = strchr(c_str() + nStart, ch);
-  
-  return p == NULL ? npos : p - c_str();
-}
-
-size_t wxString::rfind(const wxString& str, size_t nStart) const
-{
-  wxASSERT( str.GetStringData()->IsValid() );
-  wxASSERT( nStart <= Len() );
-
-  // # could be quicker than that
-  const char *p = c_str() + (nStart == npos ? Len() : nStart);
-  while ( p >= c_str() + str.Len() ) {
-    if ( strncmp(p - str.Len(), str, str.Len()) == 0 )
-      return p - str.Len() - c_str();
-    p--;
-  }
-  
-  return npos;
-}
-        
-// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
-size_t wxString::rfind(const char* sz, size_t nStart, size_t n) const
-{
-  return rfind(wxString(sz, n == npos ? 0 : n), nStart);
-}
-
-size_t wxString::rfind(char ch, size_t nStart) const
-{
-  wxASSERT( nStart <= Len() );
-
-  const char *p = strrchr(c_str() + nStart, ch);
-  
-  return p == NULL ? npos : p - c_str();
-}
-#endif
-
-wxString wxString::substr(size_t nStart, size_t nLen) const
-{
-  // npos means 'take all'
-  if ( nLen == npos )
-    nLen = 0;
+  if ( *pszTxt == wxT('\0') )
+    return true;

 
 

-  wxASSERT( nStart + nLen <= Len() );
+  // if we failed to match, backtrack if we can
+  if ( pszLastStarInText ) {
+    pszTxt = pszLastStarInText + 1;
+    pszMask = pszLastStarInMask;

 
 

-  return wxString(c_str() + nStart, nLen == npos ? 0 : nLen);
-}
+    pszLastStarInText = NULL;

 
 

-wxString& wxString::erase(size_t nStart, size_t nLen)
-{
-  wxString strTmp(c_str(), nStart);
-  if ( nLen != npos ) {
-    wxASSERT( nStart + nLen <= Len() );
+    // don't bother resetting pszLastStarInMask, it's unnecessary

 
 

-    strTmp.append(c_str() + nStart + nLen);
+    goto match;

   }
 
   }
 

-  *this = strTmp;
-  return *this;
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen, const char *sz)
-{
-  wxASSERT( nStart + nLen <= Strlen(sz) );
-
-  wxString strTmp;
-  if ( nStart != 0 )
-    strTmp.append(c_str(), nStart);
-  strTmp += sz;
-  strTmp.append(c_str() + nStart + nLen);
-  
-  *this = strTmp;
-  return *this;
+  return false;
+#endif // wxUSE_REGEX/!wxUSE_REGEX

 }
 
 }
 

-wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, char ch)
+// Count the number of chars
+int wxString::Freq(wxChar ch) const

 {
 {

-  return replace(nStart, nLen, wxString(ch, nCount));
+    int count = 0;
+    int len = Len();
+    for (int i = 0; i < len; i++)
+    {
+        if (GetChar(i) == ch)
+            count ++;
+    }
+    return count;

 }
 
 }
 

-wxString& wxString::replace(size_t nStart, size_t nLen, 
-                            const wxString& str, size_t nStart2, size_t nLen2)
-{
-  return replace(nStart, nLen, str.substr(nStart2, nLen2));
-}
+// convert to upper case, return the copy of the string
+wxString wxString::Upper() const
+{ wxString s(*this); return s.MakeUpper(); }

 
 

-wxString& wxString::replace(size_t nStart, size_t nLen, 
-                        const char* sz, size_t nCount)
-{
-  return replace(nStart, nLen, wxString(sz, nCount));
-}
+// convert to lower case, return the copy of the string
+wxString wxString::Lower() const { wxString s(*this); return s.MakeLower(); }

 
 

-#endif  //std::string compatibility
+int wxString::sprintf(const wxChar *pszFormat, ...)
+  {
+    va_list argptr;
+    va_start(argptr, pszFormat);
+    int iLen = PrintfV(pszFormat, argptr);
+    va_end(argptr);
+    return iLen;
+  }

 
 // ============================================================================
 // ArrayString
 // ============================================================================
 
 
 // ============================================================================
 // ArrayString
 // ============================================================================
 

-// size increment = max(50% of current size, ARRAY_MAXSIZE_INCREMENT)
+#include "wx/arrstr.h"
+
+#if !wxUSE_STL
+
+// size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)

 #define   ARRAY_MAXSIZE_INCREMENT       4096
 #define   ARRAY_MAXSIZE_INCREMENT       4096

+

 #ifndef   ARRAY_DEFAULT_INITIAL_SIZE    // also defined in dynarray.h
 #ifndef   ARRAY_DEFAULT_INITIAL_SIZE    // also defined in dynarray.h

-  #define   ARRAY_DEFAULT_INITIAL_SIZE    (16)
+#define   ARRAY_DEFAULT_INITIAL_SIZE    (16)

 #endif
 
 #define   STRING(p)   ((wxString *)(&(p)))
 
 // ctor
 #endif
 
 #define   STRING(p)   ((wxString *)(&(p)))
 
 // ctor

-wxArrayString::wxArrayString()
+void wxArrayString::Init(bool autoSort)

 {
   m_nSize  =
   m_nCount = 0;
 {
   m_nSize  =
   m_nCount = 0;

-  m_pItems = NULL;
+  m_pItems = (wxChar **) NULL;
+  m_autoSort = autoSort;

 }
 
 // copy ctor
 wxArrayString::wxArrayString(const wxArrayString& src)
 {
 }
 
 // copy ctor
 wxArrayString::wxArrayString(const wxArrayString& src)
 {

-  m_nSize  = src.m_nSize;
-  m_nCount = src.m_nCount;
-
-  if ( m_nSize != 0 )
-    m_pItems = new char *[m_nSize];
-  else
-    m_pItems = NULL;
+  Init(src.m_autoSort);

 
 

-  if ( m_nCount != 0 )
-    memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(char *));
+  *this = src;

 }
 
 }
 

-// copy operator
+// assignment operator

 wxArrayString& wxArrayString::operator=(const wxArrayString& src)
 {
 wxArrayString& wxArrayString::operator=(const wxArrayString& src)
 {

-  DELETEA(m_pItems);
-
-  m_nSize  = src.m_nSize;
-  m_nCount = src.m_nCount;
+  if ( m_nSize > 0 )
+    Clear();

 
 

-  if ( m_nSize != 0 )
-    m_pItems = new char *[m_nSize];
-  else
-    m_pItems = NULL;
+  Copy(src);

 
 

-  if ( m_nCount != 0 )
-    memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(char *));
+  m_autoSort = src.m_autoSort;

 
   return *this;
 }
 
 
   return *this;
 }
 

+void wxArrayString::Copy(const wxArrayString& src)
+{
+  if ( src.m_nCount > ARRAY_DEFAULT_INITIAL_SIZE )
+    Alloc(src.m_nCount);
+
+  for ( size_t n = 0; n < src.m_nCount; n++ )
+    Add(src[n]);
+}
+

 // grow the array
 // grow the array

-void wxArrayString::Grow()
+void wxArrayString::Grow(size_t nIncrement)

 {
   // only do it if no more place
 {
   // only do it if no more place

-  if( m_nCount == m_nSize ) {
-    if( m_nSize == 0 ) {
+  if ( (m_nSize - m_nCount) < nIncrement ) {
+    // if ARRAY_DEFAULT_INITIAL_SIZE were set to 0, the initially empty would
+    // be never resized!
+    #if ARRAY_DEFAULT_INITIAL_SIZE == 0
+      #error "ARRAY_DEFAULT_INITIAL_SIZE must be > 0!"
+    #endif
+
+    if ( m_nSize == 0 ) {

       // was empty, alloc some memory
       m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
       // was empty, alloc some memory
       m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;

-      m_pItems = new char *[m_nSize];
+      if (m_nSize < nIncrement)
+          m_nSize = nIncrement;
+      m_pItems = new wxChar *[m_nSize];

     }
     else {
     }
     else {

+      // otherwise when it's called for the first time, nIncrement would be 0
+      // and the array would never be expanded

       // add 50% but not too much
       // add 50% but not too much

-      size_t nIncrement = m_nSize >> 1;
-      if ( nIncrement > ARRAY_MAXSIZE_INCREMENT )
-        nIncrement = ARRAY_MAXSIZE_INCREMENT;
+      size_t ndefIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
+                          ? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
+      if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT )
+        ndefIncrement = ARRAY_MAXSIZE_INCREMENT;
+      if ( nIncrement < ndefIncrement )
+        nIncrement = ndefIncrement;

       m_nSize += nIncrement;
       m_nSize += nIncrement;

-      char **pNew = new char *[m_nSize];
+      wxChar **pNew = new wxChar *[m_nSize];

 
       // copy data to new location
 
       // copy data to new location

-      memcpy(pNew, m_pItems, m_nCount*sizeof(char *));
+      memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));

 
       // delete old memory (but do not release the strings!)
 
       // delete old memory (but do not release the strings!)

-      DELETEA(m_pItems);
+      wxDELETEA(m_pItems);

 
       m_pItems = pNew;
     }
 
       m_pItems = pNew;
     }


@@ -1217,11 +2144,10 @@ void wxArrayString::Clear()
 {
   Free();
 
 {
   Free();
 

-  m_nSize  = 
+  m_nSize  =

   m_nCount = 0;
 
   m_nCount = 0;
 

-  DELETEA(m_pItems);
-  m_pItems = NULL;
+  wxDELETEA(m_pItems);

 }
 
 // dtor
 }
 
 // dtor


@@ -1229,109 +2155,362 @@ wxArrayString::~wxArrayString()
 {
   Free();
 
 {
   Free();
 

-  DELETEA(m_pItems);
+  wxDELETEA(m_pItems);
+}
+
+void wxArrayString::reserve(size_t nSize)
+{
+    Alloc(nSize);

 }
 
 // pre-allocates memory (frees the previous data!)
 void wxArrayString::Alloc(size_t nSize)
 {
 }
 
 // pre-allocates memory (frees the previous data!)
 void wxArrayString::Alloc(size_t nSize)
 {

-  wxASSERT( nSize > 0 );
-

   // only if old buffer was not big enough
   if ( nSize > m_nSize ) {
     Free();
   // only if old buffer was not big enough
   if ( nSize > m_nSize ) {
     Free();

-    DELETEA(m_pItems);
-    m_pItems = new char *[nSize];
+    wxDELETEA(m_pItems);
+    m_pItems = new wxChar *[nSize];

     m_nSize  = nSize;
   }
 
   m_nCount = 0;
 }
 
     m_nSize  = nSize;
   }
 
   m_nCount = 0;
 }
 

-// searches the array for an item (forward or backwards)
+// minimizes the memory usage by freeing unused memory
+void wxArrayString::Shrink()
+{
+  // only do it if we have some memory to free
+  if( m_nCount < m_nSize ) {
+    // allocates exactly as much memory as we need
+    wxChar **pNew = new wxChar *[m_nCount];

 
 

-// Robert Roebling (changed to bool from bool)
+    // copy data to new location
+    memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
+    delete [] m_pItems;
+    m_pItems = pNew;
+  }
+}

 
 

-int wxArrayString::Index(const char *sz, bool bCase, bool bFromEnd) const
+#if WXWIN_COMPATIBILITY_2_4
+
+// return a wxString[] as required for some control ctors.
+wxString* wxArrayString::GetStringArray() const

 {
 {

-  if ( bFromEnd ) {
-    if ( m_nCount > 0 ) {
-      uint ui = m_nCount;
-      do {
-        if ( STRING(m_pItems[--ui])->IsSameAs(sz, bCase) )
-          return ui;
-      }
-      while ( ui != 0 );
+    wxString *array = 0;
+
+    if( m_nCount > 0 )
+    {
+        array = new wxString[m_nCount];
+        for( size_t i = 0; i < m_nCount; i++ )
+            array[i] = m_pItems[i];
+    }
+
+    return array;
+}
+
+void wxArrayString::Remove(size_t nIndex, size_t nRemove)
+{
+    RemoveAt(nIndex, nRemove);
+}
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
+// searches the array for an item (forward or backwards)
+int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
+{
+  if ( m_autoSort ) {
+    // use binary search in the sorted array
+    wxASSERT_MSG( bCase && !bFromEnd,
+                  wxT("search parameters ignored for auto sorted array") );
+
+    size_t i,
+           lo = 0,
+           hi = m_nCount;
+    int res;
+    while ( lo < hi ) {
+      i = (lo + hi)/2;
+
+      res = wxStrcmp(sz, m_pItems[i]);
+      if ( res < 0 )
+        hi = i;
+      else if ( res > 0 )
+        lo = i + 1;
+      else
+        return i;

     }
     }

+
+    return wxNOT_FOUND;

   }
   else {
   }
   else {

-    for( uint ui = 0; ui < m_nCount; ui++ ) {
-      if( STRING(m_pItems[ui])->IsSameAs(sz, bCase) )
-        return ui;
+    // use linear search in unsorted array
+    if ( bFromEnd ) {
+      if ( m_nCount > 0 ) {
+        size_t ui = m_nCount;
+        do {
+          if ( STRING(m_pItems[--ui])->IsSameAs(sz, bCase) )
+            return ui;
+        }
+        while ( ui != 0 );
+      }
+    }
+    else {
+      for( size_t ui = 0; ui < m_nCount; ui++ ) {
+        if( STRING(m_pItems[ui])->IsSameAs(sz, bCase) )
+          return ui;
+      }

     }
   }
 
     }
   }
 

-  return NOT_FOUND;
+  return wxNOT_FOUND;

 }
 
 // add item at the end
 }
 
 // add item at the end

-void wxArrayString::Add(const wxString& str)
-{
-  wxASSERT( str.GetStringData()->IsValid() );
+size_t wxArrayString::Add(const wxString& str, size_t nInsert)
+{
+  if ( m_autoSort ) {
+    // insert the string at the correct position to keep the array sorted
+    size_t i,
+           lo = 0,
+           hi = m_nCount;
+    int res;
+    while ( lo < hi ) {
+      i = (lo + hi)/2;
+
+      res = str.Cmp(m_pItems[i]);
+      if ( res < 0 )
+        hi = i;
+      else if ( res > 0 )
+        lo = i + 1;
+      else {
+        lo = hi = i;
+        break;
+      }
+    }
+
+    wxASSERT_MSG( lo == hi, wxT("binary search broken") );
+
+    Insert(str, lo, nInsert);
+
+    return (size_t)lo;
+  }
+  else {
+    wxASSERT( str.GetStringData()->IsValid() );

 
 

-  Grow();
+    Grow(nInsert);

 
 

-  // the string data must not be deleted!
-  str.GetStringData()->Lock();
-  m_pItems[m_nCount++] = (char *)str.c_str();
+    for (size_t i = 0; i < nInsert; i++)
+    {
+        // the string data must not be deleted!
+        str.GetStringData()->Lock();
+
+        // just append
+        m_pItems[m_nCount + i] = (wxChar *)str.c_str(); // const_cast
+    }
+    size_t ret = m_nCount;
+    m_nCount += nInsert;
+    return ret;
+  }

 }
 
 // add item at the given position
 }
 
 // add item at the given position

-void wxArrayString::Insert(const wxString& str, size_t nIndex)
+void wxArrayString::Insert(const wxString& str, size_t nIndex, size_t nInsert)

 {
   wxASSERT( str.GetStringData()->IsValid() );
 
 {
   wxASSERT( str.GetStringData()->IsValid() );
 

-  wxCHECK_RET( nIndex <= m_nCount, "bad index in wxArrayString::Insert" );
+  wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Insert") );
+  wxCHECK_RET( m_nCount <= m_nCount + nInsert,
+               wxT("array size overflow in wxArrayString::Insert") );
+
+  Grow(nInsert);
+
+  memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex],
+          (m_nCount - nIndex)*sizeof(wxChar *));
+
+  for (size_t i = 0; i < nInsert; i++)
+  {
+      str.GetStringData()->Lock();
+      m_pItems[nIndex + i] = (wxChar *)str.c_str();
+  }
+  m_nCount += nInsert;
+}
+
+// range insert (STL 23.2.4.3)
+void
+wxArrayString::insert(iterator it, const_iterator first, const_iterator last)
+{
+    const int idx = it - begin();
+
+    // grow it once
+    Grow(last - first);

 
 

-  Grow();
+    // reset "it" since it can change inside Grow()
+    it = begin() + idx;

 
 

-  memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex], 
-          (m_nCount - nIndex)*sizeof(char *));
+    while ( first != last )
+    {
+        it = insert(it, *first);
+
+        // insert returns an iterator to the last element inserted but we need
+        // insert the next after this one, that is before the next one
+        ++it;
+
+        ++first;
+    }
+}

 
 

-  str.GetStringData()->Lock();
-  m_pItems[nIndex] = (char *)str.c_str();
+// expand the array
+void wxArrayString::SetCount(size_t count)
+{
+    Alloc(count);

 
 

-  m_nCount++;
+    wxString s;
+    while ( m_nCount < count )
+        m_pItems[m_nCount++] = (wxChar *)s.c_str();

 }
 
 // removes item from array (by index)
 }
 
 // removes item from array (by index)

-void wxArrayString::Remove(size_t nIndex)
+void wxArrayString::RemoveAt(size_t nIndex, size_t nRemove)

 {
 {

-  wxCHECK_RET( nIndex <= m_nCount, "bad index in wxArrayString::Remove" );
+  wxCHECK_RET( nIndex < m_nCount, wxT("bad index in wxArrayString::Remove") );
+  wxCHECK_RET( nIndex + nRemove <= m_nCount,
+               wxT("removing too many elements in wxArrayString::Remove") );

 
   // release our lock
 
   // release our lock

-  Item(nIndex).GetStringData()->Unlock();
+  for (size_t i = 0; i < nRemove; i++)
+      Item(nIndex + i).GetStringData()->Unlock();

 
 

-  memmove(&m_pItems[nIndex], &m_pItems[nIndex + 1], 
-          (m_nCount - nIndex - 1)*sizeof(char *));
-  m_nCount--;
+  memmove(&m_pItems[nIndex], &m_pItems[nIndex + nRemove],
+          (m_nCount - nIndex - nRemove)*sizeof(wxChar *));
+  m_nCount -= nRemove;

 }
 
 // removes item from array (by value)
 }
 
 // removes item from array (by value)

-void wxArrayString::Remove(const char *sz)
+void wxArrayString::Remove(const wxChar *sz)

 {
   int iIndex = Index(sz);
 
 {
   int iIndex = Index(sz);
 

-  wxCHECK_RET( iIndex != NOT_FOUND,
-               "removing inexistent element in wxArrayString::Remove" );
+  wxCHECK_RET( iIndex != wxNOT_FOUND,
+               wxT("removing inexistent element in wxArrayString::Remove") );
+
+  RemoveAt(iIndex);
+}
+
+void wxArrayString::assign(const_iterator first, const_iterator last)
+{
+    reserve(last - first);
+    for(; first != last; ++first)
+        push_back(*first);
+}
+
+// ----------------------------------------------------------------------------
+// sorting
+// ----------------------------------------------------------------------------
+
+// we can only sort one array at a time with the quick-sort based
+// implementation
+#if wxUSE_THREADS
+  // need a critical section to protect access to gs_compareFunction and
+  // gs_sortAscending variables
+  static wxCriticalSection *gs_critsectStringSort = NULL;
+
+  // call this before the value of the global sort vars is changed/after
+  // you're finished with them
+  #define START_SORT()     wxASSERT( !gs_critsectStringSort );                \
+                           gs_critsectStringSort = new wxCriticalSection;     \
+                           gs_critsectStringSort->Enter()
+  #define END_SORT()       gs_critsectStringSort->Leave();                    \
+                           delete gs_critsectStringSort;                      \
+                           gs_critsectStringSort = NULL
+#else // !threads
+  #define START_SORT()
+  #define END_SORT()
+#endif // wxUSE_THREADS
+
+// function to use for string comparaison
+static wxArrayString::CompareFunction gs_compareFunction = NULL;
+
+// if we don't use the compare function, this flag tells us if we sort the
+// array in ascending or descending order
+static bool gs_sortAscending = true;
+
+// function which is called by quick sort
+extern "C" int wxC_CALLING_CONV     // LINKAGEMODE
+wxStringCompareFunction(const void *first, const void *second)
+{
+  wxString *strFirst = (wxString *)first;
+  wxString *strSecond = (wxString *)second;
+
+  if ( gs_compareFunction ) {
+    return gs_compareFunction(*strFirst, *strSecond);
+  }
+  else {
+    // maybe we should use wxStrcoll
+    int result = strFirst->Cmp(*strSecond);

 
 

-  Remove((size_t)iIndex);
+    return gs_sortAscending ? result : -result;
+  }

 }
 
 // sort array elements using passed comparaison function
 }
 
 // sort array elements using passed comparaison function

+void wxArrayString::Sort(CompareFunction compareFunction)
+{
+  START_SORT();
+
+  wxASSERT( !gs_compareFunction );  // must have been reset to NULL
+  gs_compareFunction = compareFunction;
+
+  DoSort();
+
+  // reset it to NULL so that Sort(bool) will work the next time
+  gs_compareFunction = NULL;
+
+  END_SORT();
+}
+
+typedef  int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first, const void *second);
+
+void wxArrayString::Sort(CompareFunction2 compareFunction)
+{
+  qsort(m_pItems, m_nCount, sizeof(wxChar *), (wxStringCompareFn)compareFunction);
+}
+
+void wxArrayString::Sort(bool reverseOrder)
+{
+  Sort(reverseOrder ? wxStringSortDescending : wxStringSortAscending);
+}
+
+void wxArrayString::DoSort()
+{
+  wxCHECK_RET( !m_autoSort, wxT("can't use this method with sorted arrays") );
+
+  // just sort the pointers using qsort() - of course it only works because
+  // wxString() *is* a pointer to its data
+  qsort(m_pItems, m_nCount, sizeof(wxChar *), wxStringCompareFunction);
+}
+
+bool wxArrayString::operator==(const wxArrayString& a) const
+{
+    if ( m_nCount != a.m_nCount )
+        return false;
+
+    for ( size_t n = 0; n < m_nCount; n++ )
+    {
+        if ( Item(n) != a[n] )
+            return false;
+    }
+
+    return true;
+}
+
+#endif // !wxUSE_STL
+
+int wxCMPFUNC_CONV wxStringSortAscending(wxString* s1, wxString* s2)
+{
+    return  s1->Cmp(*s2);
+}

 
 

-void wxArrayString::Sort(bool bCase, bool bReverse)
+int wxCMPFUNC_CONV wxStringSortDescending(wxString* s1, wxString* s2)

 {
 {

-  //@@@@ TO DO
-  //qsort(m_pItems, m_nCount, sizeof(char *), fCmp);
+    return -s1->Cmp(*s2);

 }
 }