X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/378b05f7f86eda83452d67f182afc62a0f9b982f..ce7208d49d5ce2ca1dc0b3b83f14f1d04f29c4bf:/src/common/string.cpp

diff --git a/src/common/string.cpp b/src/common/string.cpp
index 60fcb535a7..b0bc3a1864 100644
--- a/src/common/string.cpp
+++ b/src/common/string.cpp
@@ -1,18 +1,15 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        string.cpp
+// Name:        src/common/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>
-// 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())
@@ -28,35 +25,22 @@
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-  #pragma hdrstop
+    #pragma hdrstop
 #endif
 
 #ifndef WX_PRECOMP
-  #include "wx/defs.h"
-  #include "wx/string.h"
-  #include "wx/intl.h"
-  #include "wx/thread.h"
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/thread.h"
 #endif
 
 #include <ctype.h>
+#include <errno.h>
 #include <string.h>
 #include <stdlib.h>
 
 #ifdef __SALFORDC__
-  #include <clib.h>
-#endif
-
-#if wxUSE_WCSRTOMBS
-  #include <wchar.h>    // for wcsrtombs(), see comments where it's used
-#endif // GNU
-
-#ifdef  WXSTRING_IS_WXOBJECT
-  IMPLEMENT_DYNAMIC_CLASS(wxString, wxObject)
-#endif  //WXSTRING_IS_WXOBJECT
-
-#if wxUSE_UNICODE
-#undef wxUSE_EXPERIMENTAL_PRINTF
-#define wxUSE_EXPERIMENTAL_PRINTF 1
+    #include <clib.h>
 #endif
 
 // allocating extra space for each string consumes more memory but speeds up
@@ -68,14 +52,21 @@
 // static class variables definition
 // ---------------------------------------------------------------------------
 
-#ifdef  wxSTD_STRING_COMPATIBILITY
-  const size_t wxString::npos = wxSTRING_MAXLEN;
-#endif // wxSTD_STRING_COMPATIBILITY
+#if !wxUSE_STL
+  //According to STL _must_ be a -1 size_t
+  const size_t wxStringBase::npos = (size_t) -1;
+#endif
 
 // ----------------------------------------------------------------------------
 // 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)
@@ -86,136 +77,29 @@ static const struct
 } g_strEmpty = { {-1, 0, 0}, wxT('\0') };
 
 // empty C style string: points to 'string data' byte of g_strEmpty
-extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
-
-// ----------------------------------------------------------------------------
-// conditional compilation
-// ----------------------------------------------------------------------------
-
-#if !defined(__WXSW__) && wxUSE_UNICODE
-  #ifdef wxUSE_EXPERIMENTAL_PRINTF
-    #undef wxUSE_EXPERIMENTAL_PRINTF
-  #endif
-  #define wxUSE_EXPERIMENTAL_PRINTF 1
-#endif
+extern const wxChar WXDLLIMPEXP_BASE *wxEmptyString = &g_strEmpty.dummy;
 
-// we want to find out if the current platform supports vsnprintf()-like
-// function: for Unix this is done with configure, for Windows we test the
-// compiler explicitly.
-//
-// FIXME currently, this is only for ANSI (!Unicode) strings, so we call this
-//       function wxVsnprintfA (A for ANSI), should also find one for Unicode
-//       strings in Unicode build
-#ifdef __WXMSW__
-    #ifdef __VISUALC__
-        #define wxVsnprintfA     _vsnprintf
-    #endif
-#else   // !Windows
-    #ifdef HAVE_VSNPRINTF
-        #define wxVsnprintfA       vsnprintf
-    #endif
-#endif  // Windows/!Windows
-
-#ifndef wxVsnprintfA
-    // in this case we'll use vsprintf() (which is ANSI and thus should be
-    // always available), but it's unsafe because it doesn't check for buffer
-    // size - so give a warning
-    #define wxVsnprintfA(buf, len, format, arg) vsprintf(buf, format, arg)
-
-    #if defined(__VISUALC__)
-        #pragma message("Using sprintf() because no snprintf()-like function defined")
-    #elif defined(__GNUG__) && !defined(__UNIX__)
-        #warning "Using sprintf() because no snprintf()-like function defined"
-    #elif defined(__MWERKS__)
-        #warning "Using sprintf() because no snprintf()-like function defined"
-    #endif //compiler
-#endif // no vsnprintf
-
-#ifdef _AIX
-  // AIX has vsnprintf, but there's no prototype in the system headers.
-  extern "C" int vsnprintf(char* str, size_t n, const char* format, va_list ap);
 #endif
 
 // ----------------------------------------------------------------------------
 // global functions
 // ----------------------------------------------------------------------------
 
-#if defined(wxSTD_STRING_COMPATIBILITY) && wxUSE_STD_IOSTREAM
+#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!
+#include <iostream>
 
-istream& operator>>(istream& is, wxString& WXUNUSED(str))
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
 {
-#if 0
-  int w = is.width(0);
-  if ( is.ipfx(0) ) {
-    streambuf *sb = is.rdbuf();
-    str.erase();
-    while ( true ) {
-      int ch = sb->sbumpc ();
-      if ( ch == EOF ) {
-        is.setstate(ios::eofbit);
-        break;
-      }
-      else if ( isspace(ch) ) {
-        sb->sungetc();
-        break;
-      }
-
-      str += ch;
-      if ( --w == 1 )
-        break;
-    }
-  }
-
-  is.isfx();
-  if ( str.length() == 0 )
-    is.setstate(ios::failbit);
+#ifdef __BORLANDC__
+    os << str.mb_str();
+#else
+    os << str.c_str();
 #endif
-  return is;
-}
-
-ostream& operator<<(ostream& os, const wxString& str)
-{
-  os << str.c_str();
-  return os;
-}
-
-#endif  //std::string compatibility
-
-extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
-                                   const wxChar *format, va_list argptr)
-{
-#if wxUSE_UNICODE
-    // FIXME should use wvsnprintf() or whatever if it's available
-    wxString s;
-    int iLen = s.PrintfV(format, argptr);
-    if ( iLen != -1 )
-    {
-        wxStrncpy(buf, s.c_str(), iLen);
-    }
-
-    return iLen;
-#else // ANSI
-    return wxVsnprintfA(buf, len, format, argptr);
-#endif // Unicode/ANSI
+    return os;
 }
 
-extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
-                                  const wxChar *format, ...)
-{
-    va_list argptr;
-    va_start(argptr, format);
-
-    int iLen = wxVsnprintf(buf, len, format, argptr);
-
-    va_end(argptr);
-
-    return iLen;
-}
+#endif // wxUSE_STD_IOSTREAM
 
 // ----------------------------------------------------------------------------
 // private classes
@@ -227,15 +111,15 @@ extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
   class Averager
   {
   public:
-    Averager(const char *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
+    Averager(const wxChar *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
    ~Averager()
-   { printf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
+   { 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 char *m_sz;
+    const wxChar *m_sz;
   } g_averageLength("allocation size"),
     g_averageSummandLength("summand length"),
     g_averageConcatHit("hit probability in concat"),
@@ -246,114 +130,83 @@ extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
   #define STATISTICS_ADD(av, val)
 #endif // WXSTRING_STATISTICS
 
+#if !wxUSE_STL
+
 // ===========================================================================
-// wxString class core
+// wxStringData class deallocation
 // ===========================================================================
 
-// ---------------------------------------------------------------------------
-// construction
-// ---------------------------------------------------------------------------
-
-// constructs string of <nLength> copies of character <ch>
-wxString::wxString(wxChar ch, size_t nLength)
+#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()
 {
-  Init();
-
-  if ( nLength > 0 ) {
-    AllocBuffer(nLength);
-
-#if wxUSE_UNICODE
-    // memset only works on char
-    for (size_t n=0; n<nLength; n++) m_pchData[n] = ch;
-#else
-    memset(m_pchData, ch, nLength);
-#endif
-  }
+    free(this);
 }
+#endif
+
+// ===========================================================================
+// wxStringBase
+// ===========================================================================
 
 // takes nLength elements of psz starting at nPos
-void wxString::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
+void wxStringBase::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
 {
   Init();
 
-  wxASSERT( nPos <= wxStrlen(psz) );
+  // 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") );
 
-  if ( nLength == wxSTRING_MAXLEN )
     nLength = wxStrlen(psz + nPos);
+  }
 
   STATISTICS_ADD(InitialLength, nLength);
 
   if ( nLength > 0 ) {
     // trailing '\0' is written in AllocBuffer()
-    AllocBuffer(nLength);
-    memcpy(m_pchData, psz + nPos, nLength*sizeof(wxChar));
+    if ( !AllocBuffer(nLength) ) {
+      wxFAIL_MSG( _T("out of memory in wxStringBase::InitWith") );
+      return;
+    }
+    wxTmemcpy(m_pchData, psz + nPos, nLength);
   }
 }
 
-#ifdef  wxSTD_STRING_COMPATIBILITY
-
 // poor man's iterators are "void *" pointers
-wxString::wxString(const void *pStart, const void *pEnd)
-{
-  InitWith((const wxChar *)pStart, 0,
-           (const wxChar *)pEnd - (const wxChar *)pStart);
-}
-
-#endif  //std::string compatibility
-
-#if wxUSE_UNICODE
-
-// from multibyte string
-wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
+wxStringBase::wxStringBase(const void *pStart, const void *pEnd)
 {
-  // first get necessary size
-  size_t nLen = psz ? conv.MB2WC((wchar_t *) NULL, psz, 0) : 0;
-
-  // nLength is number of *Unicode* characters here!
-  if ((nLen != (size_t)-1) && (nLen > nLength))
-    nLen = nLength;
-
-  // empty?
-  if ( (nLen != 0) && (nLen != (size_t)-1) ) {
-    AllocBuffer(nLen);
-    conv.MB2WC(m_pchData, psz, nLen);
+  if ( pEnd >= pStart )
+  {
+    InitWith((const wxChar *)pStart, 0,
+             (const wxChar *)pEnd - (const wxChar *)pStart);
   }
-  else {
+  else
+  {
+    wxFAIL_MSG( _T("pStart is not before pEnd") );
     Init();
   }
 }
 
-#else // ANSI
-
-#if wxUSE_WCHAR_T
-// from wide string
-wxString::wxString(const wchar_t *pwz)
+wxStringBase::wxStringBase(size_type n, wxChar ch)
 {
-  // first get necessary size
-  size_t nLen = pwz ? wxWC2MB((char *) NULL, pwz, 0) : 0;
-
-  // empty?
-  if ( (nLen != 0) && (nLen != (size_t)-1) ) {
-    AllocBuffer(nLen);
-    wxWC2MB(m_pchData, pwz, nLen);
-  }
-  else {
-    Init();
-  }
+  Init();
+  append(n, ch);
 }
-#endif // wxUSE_WCHAR_T
-
-#endif // Unicode/ANSI
 
 // ---------------------------------------------------------------------------
 // memory allocation
 // ---------------------------------------------------------------------------
 
 // allocates memory needed to store a C string of length nLen
-void wxString::AllocBuffer(size_t nLen)
+bool wxStringBase::AllocBuffer(size_t nLen)
 {
-  wxASSERT( nLen >  0         );    //
-  wxASSERT( nLen <= INT_MAX-1 );    // max size (enough room for 1 extra)
+  // 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);
 
@@ -362,58 +215,132 @@ void wxString::AllocBuffer(size_t nLen)
   // 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;
 }
 
 // must be called before changing this string
-void wxString::CopyBeforeWrite()
+bool wxStringBase::CopyBeforeWrite()
 {
   wxStringData* pData = GetStringData();
 
   if ( pData->IsShared() ) {
     pData->Unlock();                // memory not freed because shared
     size_t nLen = pData->nDataLength;
-    AllocBuffer(nLen);
-    memcpy(m_pchData, pData->data(), nLen*sizeof(wxChar));
+    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
-void wxString::AllocBeforeWrite(size_t nLen)
+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() || (nLen > pData->nAllocLength) ) {
+  if ( pData->IsShared() || pData->IsEmpty() ) {
     // can't work with old buffer, get new one
     pData->Unlock();
-    AllocBuffer(nLen);
+    if ( !AllocBuffer(nLen) ) {
+      // allocation failures are handled by the caller
+      return false;
+    }
   }
   else {
-    // update the string length
-    pData->nDataLength = nLen;
+    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;
+}
+
+wxStringBase& wxStringBase::append(size_t n, wxChar ch)
+{
+    size_type len = length();
+
+    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;
+}
+
+void wxStringBase::resize(size_t nSize, wxChar ch)
+{
+    size_t len = length();
+
+    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
 }
 
 // allocate enough memory for nLen characters
-void wxString::Alloc(size_t nLen)
+bool wxStringBase::Alloc(size_t nLen)
 {
   wxStringData *pData = GetStringData();
   if ( pData->nAllocLength <= nLen ) {
     if ( pData->IsEmpty() ) {
       nLen += EXTRA_ALLOC;
 
-      wxStringData* pData = (wxStringData*)
-        malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+      pData = (wxStringData *)
+                malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+      if ( pData == NULL ) {
+        // allocation failure handled by caller
+        return false;
+      }
+
       pData->nRefs = 1;
       pData->nDataLength = 0;
       pData->nAllocLength = nLen;
@@ -423,177 +350,523 @@ void wxString::Alloc(size_t nLen)
     else if ( pData->IsShared() ) {
       pData->Unlock();                // memory not freed because shared
       size_t nOldLen = pData->nDataLength;
-      AllocBuffer(nLen);
-      memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
+      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;
 
-      wxStringData *p = (wxStringData *)
+      pData = (wxStringData *)
         realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
 
-      if ( p == NULL ) {
-        // @@@ what to do on memory error?
-        return;
+      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)
-      p->nAllocLength = nLen;
-      m_pchData = p->data();
+      pData->nAllocLength = nLen;
+      m_pchData = pData->data();
     }
   }
   //else: we've already got enough
+  return true;
 }
 
-// shrink to minimal size (releasing extra memory)
-void wxString::Shrink()
+wxStringBase::iterator wxStringBase::begin()
 {
-  wxStringData *pData = GetStringData();
-
-  // this variable is unused in release build, so avoid the compiler warning by
-  // just not declaring it
-#ifdef __WXDEBUG__
-  void *p =
-#endif
-  realloc(pData, sizeof(wxStringData) + (pData->nDataLength + 1)*sizeof(wxChar));
+    if (length() > 0)
+        CopyBeforeWrite();
+    return m_pchData;
+}
 
-  wxASSERT( p != NULL );  // can't free memory?
-  wxASSERT( p == pData ); // we're decrementing the size - block shouldn't move!
+wxStringBase::iterator wxStringBase::end()
+{
+    if (length() > 0)
+        CopyBeforeWrite();
+    return m_pchData + length();
 }
 
-// get the pointer to writable buffer of (at least) nLen bytes
-wxChar *wxString::GetWriteBuf(size_t nLen)
+wxStringBase::iterator wxStringBase::erase(iterator it)
 {
-  AllocBeforeWrite(nLen);
+    size_type idx = it - begin();
+    erase(idx, 1);
+    return begin() + idx;
+}
 
-  wxASSERT( GetStringData()->nRefs == 1 );
-  GetStringData()->Validate(FALSE);
+wxStringBase& wxStringBase::erase(size_t nStart, size_t nLen)
+{
+    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);
 
-  return m_pchData;
+    swap(strTmp);
+    return *this;
 }
 
-// put string back in a reasonable state after GetWriteBuf
-void wxString::UngetWriteBuf()
+wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)
 {
-  GetStringData()->nDataLength = wxStrlen(m_pchData);
-  GetStringData()->Validate(TRUE);
-}
+    wxASSERT( nPos <= length() );
 
-// ---------------------------------------------------------------------------
-// data access
-// ---------------------------------------------------------------------------
+    if ( n == npos ) n = wxStrlen(sz);
+    if ( n == 0 ) return *this;
 
-// all functions are inline in string.h
+    if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
+        wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
+    }
 
-// ---------------------------------------------------------------------------
-// assignment operators
-// ---------------------------------------------------------------------------
+    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';
 
-// helper function: does real copy
-void wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+    return *this;
+}
+
+void wxStringBase::swap(wxStringBase& str)
 {
-  if ( nSrcLen == 0 ) {
-    Reinit();
-  }
-  else {
-    AllocBeforeWrite(nSrcLen);
-    memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
-    GetStringData()->nDataLength = nSrcLen;
-    m_pchData[nSrcLen] = wxT('\0');
-  }
+    wxChar* tmp = str.m_pchData;
+    str.m_pchData = m_pchData;
+    m_pchData = tmp;
 }
 
-// assigns one string to another
-wxString& wxString::operator=(const wxString& stringSrc)
+size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const
 {
-  wxASSERT( stringSrc.GetStringData()->IsValid() );
+    // deal with the special case of empty string first
+    const size_t nLen = length();
+    const size_t nLenOther = str.length();
 
-  // don't copy string over itself
-  if ( m_pchData != stringSrc.m_pchData ) {
-    if ( stringSrc.GetStringData()->IsEmpty() ) {
-      Reinit();
+    if ( !nLenOther )
+    {
+        // empty string is a substring of anything
+        return 0;
     }
-    else {
-      // adjust references
-      GetStringData()->Unlock();
-      m_pchData = stringSrc.m_pchData;
-      GetStringData()->Lock();
+
+    if ( !nLen )
+    {
+        // the other string is non empty so can't be our substring
+        return npos;
     }
-  }
 
-  return *this;
+    wxASSERT( str.GetStringData()->IsValid() );
+    wxASSERT( nStart <= nLen );
+
+    const wxChar * const other = str.c_str();
+
+    // anchor
+    const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
+                                               *other,
+                                               nLen - nStart);
+
+    if ( !p )
+        return npos;
+
+    while ( p - c_str() + nLenOther <= nLen && wxTmemcmp(p, other, nLenOther) )
+    {
+        p++;
+
+        // anchor again
+        p = (const wxChar*)wxTmemchr(p, *other, nLen - (p - c_str()));
+
+        if ( !p )
+            return npos;
+    }
+
+    return p - c_str() + nLenOther <= nLen ? p - c_str() : npos;
 }
 
-// assigns a single character
-wxString& wxString::operator=(wxChar ch)
+size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
 {
-  AssignCopy(1, &ch);
-  return *this;
+    return find(wxStringBase(sz, n), nStart);
 }
 
-// assigns C string
-wxString& wxString::operator=(const wxChar *psz)
+size_t wxStringBase::find(wxChar ch, size_t nStart) const
 {
-  AssignCopy(wxStrlen(psz), psz);
-  return *this;
-}
+    wxASSERT( nStart <= length() );
 
-#if !wxUSE_UNICODE
+    const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
 
-// same as 'signed char' variant
-wxString& wxString::operator=(const unsigned char* psz)
-{
-  *this = (const char *)psz;
-  return *this;
+    return p == NULL ? npos : p - c_str();
 }
 
-#if wxUSE_WCHAR_T
-wxString& wxString::operator=(const wchar_t *pwz)
+size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
 {
-  wxString str(pwz);
-  *this = str;
-  return *this;
-}
-#endif
+    wxASSERT( str.GetStringData()->IsValid() );
+    wxASSERT( nStart == npos || nStart <= length() );
 
-#endif
+    if ( length() >= str.length() )
+    {
+        // avoids a corner case later
+        if ( length() == 0 && str.length() == 0 )
+            return 0;
 
-// ---------------------------------------------------------------------------
-// string concatenation
-// ---------------------------------------------------------------------------
+        // "top" is the point where search starts from
+        size_t top = length() - str.length();
 
-// add something to this string
-void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
-{
-  STATISTICS_ADD(SummandLength, nSrcLen);
+        if ( nStart == npos )
+            nStart = length() - 1;
+        if ( nStart < top )
+            top = nStart;
 
-  // concatenating an empty string is a NOP
-  if ( nSrcLen > 0 ) {
-    wxStringData *pData = GetStringData();
-    size_t nLen = pData->nDataLength;
-    size_t nNewLen = nLen + nSrcLen;
+        const wxChar *cursor = c_str() + top;
+        do
+        {
+            if ( wxTmemcmp(cursor, str.c_str(),
+                        str.length()) == 0 )
+            {
+                return cursor - c_str();
+            }
+        } while ( cursor-- > c_str() );
+    }
 
-    // alloc new buffer if current is too small
-    if ( pData->IsShared() ) {
-      STATISTICS_ADD(ConcatHit, 0);
+    return npos;
+}
 
-      // we have to allocate another buffer
-      wxStringData* pOldData = GetStringData();
-      AllocBuffer(nNewLen);
-      memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
-      pOldData->Unlock();
-    }
-    else if ( nNewLen > pData->nAllocLength ) {
-      STATISTICS_ADD(ConcatHit, 0);
+size_t wxStringBase::rfind(const wxChar* sz, size_t nStart, size_t n) const
+{
+    return rfind(wxStringBase(sz, n), nStart);
+}
 
-      // we have to grow the buffer
-      Alloc(nNewLen);
+size_t wxStringBase::rfind(wxChar ch, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length();
     }
-    else {
-      STATISTICS_ADD(ConcatHit, 1);
-
-      // the buffer is already big enough
+    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;
+}
+
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart) const
+{
+    wxASSERT(nStart <= length());
+
+    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;
+}
+
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart,
+                                   size_t n) const
+{
+    return find_first_of(wxStringBase(sz, n), nStart);
+}
+
+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()") );
+    }
+
+    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;
+}
+
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart,
+                                   size_t n) const
+{
+    return find_last_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length();
+    }
+    else
+    {
+        wxASSERT( nStart <= length() );
+    }
+
+    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;
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart,
+                                       size_t n) const
+{
+    return find_first_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(wxChar ch, size_t nStart) const
+{
+    wxASSERT( nStart <= length() );
+
+    for ( const wxChar *p = c_str() + nStart; *p; p++ )
+    {
+        if ( *p != ch )
+            return p - c_str();
+    }
+
+    return npos;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const
+{
+    if ( nStart == npos )
+    {
+        nStart = length() - 1;
+    }
+    else
+    {
+        wxASSERT( nStart <= length() );
+    }
+
+    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;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart,
+                                      size_t n) const
+{
+    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
+
+  //This is kind of inefficient, but its pretty good considering...
+  //we don't want to use character access operators here because on STL
+  //it will freeze the reference count of strTmp, which means a deep copy
+  //at the end when swap is called
+  //
+  //Also, we can't use append with the full character pointer and must
+  //do it manually because this string can contain null characters
+  for(size_t i1 = 0; i1 < nStart; ++i1)
+      strTmp.append(1, this->c_str()[i1]);
+
+  //its safe to do the full version here because
+  //sz must be a normal c string
+  strTmp.append(sz);
+
+  for(size_t i2 = nStart + nLen; i2 < length(); ++i2)
+      strTmp.append(1, this->c_str()[i2]);
+
+  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
+wxStringBase& wxStringBase::operator=(const wxStringBase& stringSrc)
+{
+  wxASSERT( stringSrc.GetStringData()->IsValid() );
+
+  // don't copy string over itself
+  if ( m_pchData != stringSrc.m_pchData ) {
+    if ( stringSrc.GetStringData()->IsEmpty() ) {
+      Reinit();
+    }
+    else {
+      // adjust references
+      GetStringData()->Unlock();
+      m_pchData = stringSrc.m_pchData;
+      GetStringData()->Lock();
+    }
+  }
+
+  return *this;
+}
+
+// assigns a single character
+wxStringBase& wxStringBase::operator=(wxChar ch)
+{
+  if ( !AssignCopy(1, &ch) ) {
+    wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(wxChar)") );
+  }
+  return *this;
+}
+
+// assigns C string
+wxStringBase& wxStringBase::operator=(const wxChar *psz)
+{
+  if ( !AssignCopy(wxStrlen(psz), psz) ) {
+    wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(const wxChar *)") );
+  }
+  return *this;
+}
+
+// helper function: does real copy
+bool wxStringBase::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+{
+  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
+// ---------------------------------------------------------------------------
+
+// add something to this string
+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
+  if ( nSrcLen > 0 ) {
+    wxStringData *pData = GetStringData();
+    size_t nLen = pData->nDataLength;
+    size_t nNewLen = nLen + nSrcLen;
+
+    // alloc new buffer if current is too small
+    if ( pData->IsShared() ) {
+      STATISTICS_ADD(ConcatHit, 0);
+
+      // we have to allocate another buffer
+      wxStringData* pOldData = GetStringData();
+      if ( !AllocBuffer(nNewLen) ) {
+          // allocation failure handled by caller
+          return false;
+      }
+      memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
+      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 {
+      STATISTICS_ADD(ConcatHit, 1);
+
+      // the buffer is already big enough
     }
 
     // should be enough space
@@ -606,7 +879,240 @@ void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
     GetStringData()->nDataLength = nNewLen; // and fix the length
   }
   //else: the string to append was empty
+  return true;
+}
+
+// ---------------------------------------------------------------------------
+// simple sub-string extraction
+// ---------------------------------------------------------------------------
+
+// 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;
+}
+
+#endif // !wxUSE_STL
+
+#if !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+#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)
+{
+    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;
+    }
+}
+
+int STRINGCLASS::compare(const wxStringBase& str) const
+{
+    return ::wxDoCmp(data(), length(), str.data(), str.length());
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+                         const wxStringBase& str) const
+{
+    wxASSERT(nStart <= length());
+    size_type strLen = length() - nStart;
+    nLen = strLen < nLen ? strLen : nLen;
+    return ::wxDoCmp(data() + nStart, nLen, str.data(), str.length());
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+                         const wxStringBase& str,
+                         size_t nStart2, size_t nLen2) const
+{
+    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);
+}
+
+int STRINGCLASS::compare(const wxChar* sz) const
+{
+    size_t nLen = wxStrlen(sz);
+    return ::wxDoCmp(data(), length(), sz, nLen);
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+                         const wxChar* sz, size_t nCount) const
+{
+    wxASSERT(nStart <= length());
+    size_type strLen = length() - nStart;
+    nLen = strLen < nLen ? strLen : nLen;
+    if( nCount == npos )
+        nCount = wxStrlen(sz);
+
+    return ::wxDoCmp(data() + nStart, nLen, sz, nCount);
+}
+
+#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, const wxMBConv& conv, size_t nLength)
+{
+    // anything to do?
+    if ( psz && nLength != 0 )
+    {
+        if ( nLength == npos )
+        {
+            nLength = wxNO_LEN;
+        }
+
+        size_t nLenWide;
+        wxWCharBuffer wbuf = conv.cMB2WC(psz, nLength, &nLenWide);
+
+        if ( nLenWide )
+            assign(wbuf, nLenWide);
+    }
+}
+
+//Convert wxString in Unicode mode to a multi-byte string
+const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
+{
+    return conv.cWC2MB(c_str(), length() + 1 /* size, not length */, NULL);
+}
+
+#else // ANSI
+
+#if wxUSE_WCHAR_T
+
+// from wide string
+wxString::wxString(const wchar_t *pwz, const wxMBConv& conv, size_t nLength)
+{
+    // anything to do?
+    if ( pwz && nLength != 0 )
+    {
+        if ( nLength == npos )
+        {
+            nLength = wxNO_LEN;
+        }
+
+        size_t nLenMB;
+        wxCharBuffer buf = conv.cWC2MB(pwz, nLength, &nLenMB);
+
+        if ( nLenMB )
+            assign(buf, nLenMB);
+    }
+}
+
+//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(const wxMBConv& conv) const
+{
+    return conv.cMB2WC(c_str(), length() + 1 /* size, not length */, NULL);
+}
+
+#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;
+}
+
+#if wxUSE_WCHAR_T
+wxString& wxString::operator=(const wchar_t *pwz)
+{
+  wxString str(pwz);
+  swap(str);
+  return *this;
 }
+#endif
+
+#endif
 
 /*
  * concatenation functions come in 5 flavours:
@@ -615,119 +1121,294 @@ void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
  *  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 = string1;
-  s += string2;
+    wxString s = str1;
+    s += str2;
 
-  return s;
+    return s;
 }
 
-wxString operator+(const wxString& string, wxChar ch)
+wxString operator+(const wxString& str, wxChar ch)
 {
-  wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+    wxASSERT( str.GetStringData()->IsValid() );
+#endif
 
-  wxString s = string;
-  s += ch;
+    wxString s = str;
+    s += ch;
 
-  return s;
+    return s;
 }
 
-wxString operator+(wxChar 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 += string;
+    wxString s = ch;
+    s += str;
 
-  return s;
+    return s;
 }
 
-wxString operator+(const wxString& string, const wxChar *psz)
+wxString operator+(const wxString& str, const wxChar *psz)
 {
-  wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+    wxASSERT( str.GetStringData()->IsValid() );
+#endif
 
-  wxString s;
-  s.Alloc(wxStrlen(psz) + string.Len());
-  s = string;
-  s += psz;
+    wxString s;
+    if ( !s.Alloc(wxStrlen(psz) + str.length()) ) {
+        wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+    }
+    s += str;
+    s += psz;
 
-  return s;
+    return s;
 }
 
-wxString operator+(const wxChar *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;
-  s.Alloc(wxStrlen(psz) + string.Len());
-  s = psz;
-  s += string;
+    wxString s;
+    if ( !s.Alloc(wxStrlen(psz) + str.length()) ) {
+        wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+    }
+    s = psz;
+    s += str;
 
-  return s;
+    return s;
 }
 
 // ===========================================================================
 // 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
 {
-  if ( nCopyLen == 0 ) {
-    dest.Init();
-  }
-  else {
-    dest.AllocBuffer(nCopyLen);
-    memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
-  }
+    return compare(psz);
+}
+
+static inline int wxDoCmpNoCase(const wxChar* s1, size_t l1,
+                                const wxChar* s2, size_t l2)
+{
+    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
 {
-  wxStringData *pData = GetStringData();
-  size_t nLen = pData->nDataLength;
+    size_t nLen = length();
 
-  // default value of nCount is wxSTRING_MAXLEN and means "till the end"
-  if ( nCount == wxSTRING_MAXLEN )
-  {
-    nCount = nLen - nFirst;
-  }
+    // default value of nCount is npos and means "till the end"
+    if ( nCount == npos )
+    {
+        nCount = nLen - nFirst;
+    }
 
-  // out-of-bounds requests return sensible things
-  if ( nFirst + nCount > nLen )
-  {
-    nCount = nLen - nFirst;
-  }
+    // out-of-bounds requests return sensible things
+    if ( nFirst + nCount > nLen )
+    {
+        nCount = nLen - nFirst;
+    }
 
-  if ( nFirst > nLen )
-  {
-    // AllocCopy() will return empty string
-    nCount = 0;
-  }
+    if ( nFirst > nLen )
+    {
+        // AllocCopy() will return empty string
+        return wxEmptyString;
+    }
+
+    wxString dest(*this, nFirst, nCount);
+    if ( dest.length() != nCount )
+    {
+        wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+    }
 
-  wxString dest;
-  AllocCopy(dest, nCount, nFirst);
+    return dest;
+}
 
-  return dest;
+// 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
+{
+    wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
+
+    // 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;
+        }
+    }
+
+    if ( rest )
+    {
+        // put the rest of the string into provided pointer
+        *rest = p;
+    }
+
+    return true;
+}
+
+
+// check that the string ends with suffix and return the rest of it in the
+// provided pointer if it is not NULL, otherwise return false
+bool wxString::EndsWith(const wxChar *suffix, wxString *rest) const
+{
+    wxASSERT_MSG( suffix, _T("invalid parameter in wxString::EndssWith") );
+
+    int start = length() - wxStrlen(suffix);
+    if ( start < 0 || wxStrcmp(c_str() + start, suffix) != 0 )
+        return false;
+
+    if ( rest )
+    {
+        // put the rest of the string into provided pointer
+        rest->assign(*this, 0, start);
+    }
+
+    return true;
 }
 
+
 // 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;
 }
 
@@ -736,7 +1417,7 @@ wxString wxString::Right(size_t nCount) const
 wxString wxString::AfterLast(wxChar ch) const
 {
   wxString str;
-  int iPos = Find(ch, TRUE);
+  int iPos = Find(ch, true);
   if ( iPos == wxNOT_FOUND )
     str = *this;
   else
@@ -748,11 +1429,13 @@ wxString wxString::AfterLast(wxChar ch) 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;
 }
 
@@ -760,11 +1443,9 @@ wxString wxString::Left(size_t nCount) const
 // (returns the whole string if ch not found)
 wxString wxString::BeforeFirst(wxChar ch) const
 {
-  wxString str;
-  for ( const wxChar *pc = m_pchData; *pc != wxT('\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
@@ -772,7 +1453,7 @@ wxString wxString::BeforeFirst(wxChar ch) const
 wxString wxString::BeforeLast(wxChar ch) const
 {
   wxString str;
-  int iPos = Find(ch, TRUE);
+  int iPos = Find(ch, true);
   if ( iPos != wxNOT_FOUND && iPos != 0 )
     str = wxString(c_str(), iPos);
 
@@ -792,82 +1473,85 @@ wxString wxString::AfterFirst(wxChar ch) const
 }
 
 // replace first (or all) occurences of some substring with another one
-size_t wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)
+size_t wxString::Replace(const wxChar *szOld,
+                  const wxChar *szNew, bool bReplaceAll)
 {
-  size_t 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") );
 
-  size_t uiOldLen = wxStrlen(szOld);
+    size_t uiCount = 0;   // count of replacements made
 
-  wxString strTemp;
-  const wxChar *pCurrent = m_pchData;
-  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 )
-        return 0;
+    size_t uiOldLen = wxStrlen(szOld);
+    size_t uiNewLen = wxStrlen(szNew);
 
-      strTemp += pCurrent;    // copy the rest
-      break;                  // exit the loop
-    }
-    else {
-      // take chars before match
-      strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent);
-      strTemp += szNew;
-      pCurrent = pSubstr + uiOldLen;  // restart after match
+    size_t dwPos = 0;
 
-      uiCount++;
+    while ( this->c_str()[dwPos] != wxT('\0') )
+    {
+        //DO NOT USE STRSTR HERE
+        //this string can contain embedded null characters,
+        //so strstr will function incorrectly
+        dwPos = find(szOld, dwPos);
+        if ( dwPos == npos )
+            break;                  // exit the loop
+        else
+        {
+            //replace this occurance of the old string with the new one
+            replace(dwPos, uiOldLen, szNew, uiNewLen);
 
-      // stop now?
-      if ( !bReplaceAll ) {
-        strTemp += pCurrent;    // copy the rest
-        break;                  // exit the loop
-      }
-    }
-  }
+            //move up pos past the string that was replaced
+            dwPos += uiNewLen;
+
+            //increase replace count
+            ++uiCount;
 
-  // only done if there were replacements, otherwise would have returned above
-  *this = strTemp;
+            // stop now?
+            if ( !bReplaceAll )
+                break;                  // exit the loop
+        }
+    }
 
-  return uiCount;
+    return uiCount;
 }
 
 bool wxString::IsAscii() const
 {
   const wxChar *s = (const wxChar*) *this;
   while(*s){
-    if(!isascii(*s)) return(FALSE);
+    if(!isascii(*s)) return(false);
     s++;
   }
-  return(TRUE);
+  return(true);
 }
 
 bool wxString::IsWord() const
 {
   const wxChar *s = (const wxChar*) *this;
   while(*s){
-    if(!wxIsalpha(*s)) return(FALSE);
+    if(!wxIsalpha(*s)) return(false);
     s++;
   }
-  return(TRUE);
+  return(true);
 }
 
 bool wxString::IsNumber() const
 {
   const wxChar *s = (const wxChar*) *this;
+  if (wxStrlen(s))
+     if ((s[0] == wxT('-')) || (s[0] == wxT('+'))) s++;
   while(*s){
-    if(!wxIsdigit(*s)) return(FALSE);
+    if(!wxIsdigit(*s)) return(false);
     s++;
   }
-  return(TRUE);
+  return(true);
 }
 
 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;
 }
 
@@ -877,20 +1561,16 @@ wxString wxString::Strip(stripType w) const
 
 wxString& wxString::MakeUpper()
 {
-  CopyBeforeWrite();
-
-  for ( wxChar *p = m_pchData; *p; p++ )
-    *p = (wxChar)wxToupper(*p);
+  for ( iterator it = begin(), en = end(); it != en; ++it )
+    *it = (wxChar)wxToupper(*it);
 
   return *this;
 }
 
 wxString& wxString::MakeLower()
 {
-  CopyBeforeWrite();
-
-  for ( wxChar *p = m_pchData; *p; p++ )
-    *p = (wxChar)wxTolower(*p);
+  for ( iterator it = begin(), en = end(); it != en; ++it )
+    *it = (wxChar)wxTolower(*it);
 
   return *this;
 }
@@ -899,76 +1579,76 @@ wxString& wxString::MakeLower()
 // 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)
 {
-  // first check if we're going to modify the string at all
-  if ( !IsEmpty() &&
-       (
-        (bFromRight && wxIsspace(GetChar(Len() - 1))) ||
-        (!bFromRight && wxIsspace(GetChar(0u)))
+    // first check if we're going to modify the string at all
+    if ( !empty() &&
+         (
+          (bFromRight && wxSafeIsspace(GetChar(length() - 1))) ||
+          (!bFromRight && wxSafeIsspace(GetChar(0u)))
+         )
        )
-     )
-  {
-    // ok, there is at least one space to trim
-    CopyBeforeWrite();
-
-    if ( bFromRight )
-    {
-      // find last non-space character
-      wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
-      while ( wxIsspace(*psz) && (psz >= m_pchData) )
-        psz--;
-
-      // truncate at trailing space start
-      *++psz = wxT('\0');
-      GetStringData()->nDataLength = psz - m_pchData;
-    }
-    else
     {
-      // find first non-space character
-      const wxChar *psz = m_pchData;
-      while ( wxIsspace(*psz) )
-        psz++;
+        if ( bFromRight )
+        {
+            // find last non-space character
+            reverse_iterator psz = rbegin();
+            while ( (psz != rend()) && wxSafeIsspace(*psz) )
+                psz++;
+            
+            // truncate at trailing space start
+            erase(psz.base(), end());
+        }
+        else
+        {
+            // find first non-space character
+            iterator psz = begin();
+            while ( (psz != end()) && wxSafeIsspace(*psz) )
+                psz++;
 
-      // fix up data and length
-      int nDataLength = GetStringData()->nDataLength - (psz - (const wxChar*) m_pchData);
-      memmove(m_pchData, psz, (nDataLength + 1)*sizeof(wxChar));
-      GetStringData()->nDataLength = nDataLength;
+            // fix up data and length
+            erase(begin(), psz);
+        }
     }
-  }
 
-  return *this;
+    return *this;
 }
 
 // adds nCount characters chPad to the string from either side
 wxString& wxString::Pad(size_t nCount, wxChar chPad, bool bFromRight)
 {
-  wxString s(chPad, nCount);
+    wxString s(chPad, nCount);
 
-  if ( bFromRight )
-    *this += s;
-  else
-  {
-    s += *this;
-    *this = s;
-  }
+    if ( bFromRight )
+        *this += s;
+    else
+    {
+        s += *this;
+        swap(s);
+    }
 
-  return *this;
+    return *this;
 }
 
 // truncate the string
 wxString& wxString::Truncate(size_t uiLen)
 {
-  if ( uiLen < Len() ) {
-    CopyBeforeWrite();
-
-    *(m_pchData + uiLen) = wxT('\0');
-    GetStringData()->nDataLength = uiLen;
-  }
-  //else: nothing to do, string is already short enough
+    if ( uiLen < length() )
+    {
+        erase(begin() + uiLen, end());
+    }
+    //else: nothing to do, string is already short enough
 
-  return *this;
+    return *this;
 }
 
 // ---------------------------------------------------------------------------
@@ -978,371 +1658,297 @@ wxString& wxString::Truncate(size_t uiLen)
 // find a character
 int wxString::Find(wxChar ch, bool bFromEnd) const
 {
-  const wxChar *psz = bFromEnd ? wxStrrchr(m_pchData, ch) : wxStrchr(m_pchData, ch);
+    size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);
 
-  return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+    return (idx == npos) ? wxNOT_FOUND : (int)idx;
 }
 
 // find a sub-string (like strstr)
 int wxString::Find(const wxChar *pszSub) const
 {
-  const wxChar *psz = wxStrstr(m_pchData, pszSub);
+    size_type idx = find(pszSub);
 
-  return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+    return (idx == npos) ? wxNOT_FOUND : (int)idx;
 }
 
-// ---------------------------------------------------------------------------
-// stream-like operators
-// ---------------------------------------------------------------------------
-wxString& wxString::operator<<(int i)
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+// the implementation of all the functions below is exactly the same so factor
+// it out
+#ifndef __WATCOMC__
+
+template <typename T>
+bool wxStringToIntType(const wxChar *start,
+                       T *val,
+                       int base,
+                       T (*func)(const wxChar *, wxChar **, int))
 {
-    wxString res;
-    res.Printf(wxT("%d"), i);
+    wxCHECK_MSG( val, false, _T("NULL output pointer") );
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+    errno = 0;
+
+    wxChar *end;
+    *val = (*func)(start, &end, base);
+
+    // return true only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with and no under/overflow occurred
+    return !*end && (end != start) && (errno != ERANGE);
+}
 
-    return (*this) << res;
+#define wxSTR2INT(val, b, func) return wxStringToIntType(c_str(), val, b, func)
+
+#else // __WATCOMC__
+
+//  FIXME, TODO, ASAP !!! - ugly trick to make release for Open Watcom possible
+//  without changing code flow for other compilers
+
+#define wxSTR2INT(val, base, func)                                            \
+    wxCHECK_MSG( val, false, _T("NULL output pointer") );                     \
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );    \
+                                                                              \
+    errno = 0;                                                                \
+                                                                              \
+    wxChar *end;                                                              \
+    *val = (*func)(c_str(), &end, base);                                      \
+                                                                              \
+    return !*end && (end != c_str()) && (errno != ERANGE)
+
+#endif // !__WATCOMC__/__WATCOMC__
+
+bool wxString::ToLong(long *val, int base) const
+{
+    wxSTR2INT(val, base, wxStrtol);
 }
 
-wxString& wxString::operator<<(float f)
+bool wxString::ToULong(unsigned long *val, int base) const
 {
-    wxString res;
-    res.Printf(wxT("%f"), f);
+    wxSTR2INT(val, base, wxStrtoul);
+}
 
-    return (*this) << res;
+bool wxString::ToLongLong(wxLongLong_t *val, int base) const
+{
+#ifdef wxHAS_STRTOLL
+    wxSTR2INT(val, base, wxStrtoll);
+#else
+    // TODO: implement this ourselves
+    wxUnusedVar(val);
+    wxUnusedVar(base);
+    return false;
+#endif // wxHAS_STRTOLL
 }
 
-wxString& wxString::operator<<(double d)
+bool wxString::ToULongLong(wxULongLong_t *val, int base) const
 {
-    wxString res;
-    res.Printf(wxT("%g"), d);
+#ifdef wxHAS_STRTOLL
+    wxSTR2INT(val, base, wxStrtoull);
+#else
+    // TODO: implement this ourselves
+    wxUnusedVar(val);
+    wxUnusedVar(base);
+    return false;
+#endif
+}
+
+bool wxString::ToDouble(double *val) const
+{
+    wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToDouble") );
 
-    return (*this) << res;
+    errno = 0;
+
+    const wxChar *start = c_str();
+    wxChar *end;
+    *val = wxStrtod(start, &end);
+
+    // return true only if scan was stopped by the terminating NUL and if the
+    // string was not empty to start with and no under/overflow occurred
+    return !*end && (end != start) && (errno != ERANGE);
 }
 
 // ---------------------------------------------------------------------------
 // formatted output
 // ---------------------------------------------------------------------------
 
+/* static */
+wxString wxString::Format(const wxChar *pszFormat, ...)
+{
+    va_list argptr;
+    va_start(argptr, pszFormat);
+
+    wxString s;
+    s.PrintfV(pszFormat, argptr);
+
+    va_end(argptr);
+
+    return s;
+}
+
+/* static */
+wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
+{
+    wxString s;
+    s.PrintfV(pszFormat, argptr);
+    return s;
+}
+
 int wxString::Printf(const wxChar *pszFormat, ...)
 {
-  va_list argptr;
-  va_start(argptr, pszFormat);
+    va_list argptr;
+    va_start(argptr, pszFormat);
 
-  int iLen = PrintfV(pszFormat, argptr);
+    int iLen = PrintfV(pszFormat, argptr);
 
-  va_end(argptr);
+    va_end(argptr);
 
-  return iLen;
+    return iLen;
 }
 
 int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
 {
-#if wxUSE_EXPERIMENTAL_PRINTF
-  // the new implementation
-
-  // buffer to avoid dynamic memory allocation each time for small strings
-  char szScratch[1024];
-
-  Reinit();
-  for (size_t n = 0; pszFormat[n]; n++)
-    if (pszFormat[n] == wxT('%')) {
-      static char s_szFlags[256] = "%";
-      size_t flagofs = 1;
-      bool adj_left = FALSE, in_prec = FALSE,
-           prec_dot = FALSE, done = FALSE;
-      int ilen = 0;
-      size_t min_width = 0, max_width = wxSTRING_MAXLEN;
-      do {
-#define CHECK_PREC if (in_prec && !prec_dot) { s_szFlags[flagofs++] = '.'; prec_dot = TRUE; }
-        switch (pszFormat[++n]) {
-        case wxT('\0'):
-          done = TRUE;
-          break;
-        case wxT('%'):
-          *this += wxT('%');
-          done = TRUE;
-          break;
-        case wxT('#'):
-        case wxT('0'):
-        case wxT(' '):
-        case wxT('+'):
-        case wxT('\''):
-          CHECK_PREC
-          s_szFlags[flagofs++] = pszFormat[n];
-          break;
-        case wxT('-'):
-          CHECK_PREC
-          adj_left = TRUE;
-          s_szFlags[flagofs++] = pszFormat[n];
-          break;
-        case wxT('.'):
-          CHECK_PREC
-          in_prec = TRUE;
-          prec_dot = FALSE;
-          max_width = 0;
-          // dot will be auto-added to s_szFlags if non-negative number follows
-          break;
-        case wxT('h'):
-          ilen = -1;
-          CHECK_PREC
-          s_szFlags[flagofs++] = pszFormat[n];
-          break;
-        case wxT('l'):
-          ilen = 1;
-          CHECK_PREC
-          s_szFlags[flagofs++] = pszFormat[n];
-          break;
-        case wxT('q'):
-        case wxT('L'):
-          ilen = 2;
-          CHECK_PREC
-          s_szFlags[flagofs++] = pszFormat[n];
-          break;
-        case wxT('Z'):
-          ilen = 3;
-          CHECK_PREC
-          s_szFlags[flagofs++] = pszFormat[n];
-          break;
-        case wxT('*'):
-          {
-            int len = va_arg(argptr, int);
-            if (in_prec) {
-              if (len<0) break;
-              CHECK_PREC
-              max_width = len;
-            } else {
-              if (len<0) {
-                adj_left = !adj_left;
-                s_szFlags[flagofs++] = '-';
-                len = -len;
-              }
-              min_width = len;
-            }
-            flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
-          }
-          break;
-        case wxT('1'): case wxT('2'): case wxT('3'):
-        case wxT('4'): case wxT('5'): case wxT('6'):
-        case wxT('7'): case wxT('8'): case wxT('9'):
-          {
-            int len = 0;
-            CHECK_PREC
-            while ((pszFormat[n]>=wxT('0')) && (pszFormat[n]<=wxT('9'))) {
-              s_szFlags[flagofs++] = pszFormat[n];
-              len = len*10 + (pszFormat[n] - wxT('0'));
-              n++;
-            }
-            if (in_prec) max_width = len;
-            else min_width = len;
-            n--; // the main loop pre-increments n again
-          }
-          break;
-        case wxT('d'):
-        case wxT('i'):
-        case wxT('o'):
-        case wxT('u'):
-        case wxT('x'):
-        case wxT('X'):
-          CHECK_PREC
-          s_szFlags[flagofs++] = pszFormat[n];
-          s_szFlags[flagofs] = '\0';
-          if (ilen == 0 ) {
-            int val = va_arg(argptr, int);
-            ::sprintf(szScratch, s_szFlags, val);
-          }
-          else if (ilen == -1) {
-            short int val = va_arg(argptr, short int);
-            ::sprintf(szScratch, s_szFlags, val);
-          }
-          else if (ilen == 1) {
-            long int val = va_arg(argptr, long int);
-            ::sprintf(szScratch, s_szFlags, val);
-          }
-          else if (ilen == 2) {
-#if SIZEOF_LONG_LONG
-            long long int val = va_arg(argptr, long long int);
-            ::sprintf(szScratch, s_szFlags, val);
-#else
-            long int val = va_arg(argptr, long int);
-            ::sprintf(szScratch, s_szFlags, val);
-#endif
-          }
-          else if (ilen == 3) {
-            size_t val = va_arg(argptr, size_t);
-            ::sprintf(szScratch, s_szFlags, val);
-          }
-          *this += wxString(szScratch);
-          done = TRUE;
-          break;
-        case wxT('e'):
-        case wxT('E'):
-        case wxT('f'):
-        case wxT('g'):
-        case wxT('G'):
-          CHECK_PREC
-          s_szFlags[flagofs++] = pszFormat[n];
-          s_szFlags[flagofs] = '\0';
-          if (ilen == 2) {
-            long double val = va_arg(argptr, long double);
-            ::sprintf(szScratch, s_szFlags, val);
-          } else {
-            double val = va_arg(argptr, double);
-            ::sprintf(szScratch, s_szFlags, val);
-          }
-          *this += wxString(szScratch);
-          done = TRUE;
-          break;
-        case wxT('p'):
-          {
-            void *val = va_arg(argptr, void *);
-            CHECK_PREC
-            s_szFlags[flagofs++] = pszFormat[n];
-            s_szFlags[flagofs] = '\0';
-            ::sprintf(szScratch, s_szFlags, val);
-            *this += wxString(szScratch);
-            done = TRUE;
-          }
-          break;
-        case wxT('c'):
-          {
-            wxChar val = va_arg(argptr, int);
-            // we don't need to honor padding here, do we?
-            *this += val;
-            done = TRUE;
-          }
-          break;
-        case wxT('s'):
-          if (ilen == -1) {
-            // wx extension: we'll let %hs mean non-Unicode strings
-            char *val = va_arg(argptr, char *);
-#if wxUSE_UNICODE
-            // ASCII->Unicode constructor handles max_width right
-            wxString s(val, wxConvLibc, max_width);
-#else
-            size_t len = wxSTRING_MAXLEN;
-            if (val) {
-              for (len = 0; val[len] && (len<max_width); len++);
-            } else val = wxT("(null)");
-            wxString s(val, len);
-#endif
-            if (s.Len() < min_width)
-              s.Pad(min_width - s.Len(), wxT(' '), adj_left);
-            *this += s;
-          } else {
-            wxChar *val = va_arg(argptr, wxChar *);
-            size_t len = wxSTRING_MAXLEN;
-            if (val) {
-              for (len = 0; val[len] && (len<max_width); len++);
-            } else val = wxT("(null)");
-            wxString s(val, len);
-            if (s.Len() < min_width)
-              s.Pad(min_width - s.Len(), wxT(' '), adj_left);
-            *this += s;
-          }
-          done = TRUE;
-          break;
-        case wxT('n'):
-          if (ilen == 0) {
-            int *val = va_arg(argptr, int *);
-            *val = Len();
-          }
-          else if (ilen == -1) {
-            short int *val = va_arg(argptr, short int *);
-            *val = Len();
-          }
-          else if (ilen >= 1) {
-            long int *val = va_arg(argptr, long int *);
-            *val = Len();
-          }
-          done = TRUE;
-          break;
-        default:
-          if (wxIsalpha(pszFormat[n]))
-            // probably some flag not taken care of here yet
-            s_szFlags[flagofs++] = pszFormat[n];
-          else {
-            // bad format
-            *this += wxT('%'); // just to pass the glibc tst-printf.c
-            n--;
-            done = TRUE;
-          }
-          break;
-        }
-#undef CHECK_PREC
-      } while (!done);
-    } else *this += pszFormat[n];
+    int size = 1024;
+
+    for ( ;; )
+    {
+        wxStringBuffer tmp(*this, size + 1);
+        wxChar *buf = tmp;
 
-#else
-  // buffer to avoid dynamic memory allocation each time for small strings
-  char szScratch[1024];
-
-  // NB: wxVsnprintf() may return either less than the buffer size or -1 if
-  //     there is not enough place depending on implementation
-  int iLen = wxVsnprintfA(szScratch, WXSIZEOF(szScratch), pszFormat, argptr);
-  if ( iLen != -1 ) {
-    // the whole string is in szScratch
-    *this = szScratch;
-  }
-  else {
-      bool outOfMemory = FALSE;
-      int size = 2*WXSIZEOF(szScratch);
-      while ( !outOfMemory ) {
-          char *buf = GetWriteBuf(size);
-          if ( buf )
-            iLen = wxVsnprintfA(buf, size, pszFormat, argptr);
-          else
-            outOfMemory = TRUE;
-
-          UngetWriteBuf();
-
-          if ( iLen != -1 ) {
-              // ok, there was enough space
-              break;
-          }
+        if ( !buf )
+        {
+            // out of memory
+            return -1;
+        }
 
-          // still not enough, double it again
-          size *= 2;
-      }
+        // 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 (newer standards such as Unix98)
+        if ( len < 0 )
+        {
+            // still not enough, as we don't know how much we need, double the
+            // current size of the buffer
+            size *= 2;
+        }
+        else if ( len >= size )
+        {
+            // some vsnprintf() implementations NUL-terminate the buffer and
+            // some don't in len == size case, to be safe always add 1
+            size = len + 1;
+        }
+        else // ok, there was enough space
+        {
+            break;
+        }
+    }
 
-      if ( outOfMemory ) {
-          // out of memory
-          return -1;
-      }
-  }
-#endif // wxUSE_EXPERIMENTAL_PRINTF/!wxUSE_EXPERIMENTAL_PRINTF
+    // we could have overshot
+    Shrink();
 
-  return Len();
+    return length();
 }
 
 // ----------------------------------------------------------------------------
 // misc other operations
 // ----------------------------------------------------------------------------
 
-// returns TRUE if the string matches the pattern which may contain '*' and
+// 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
 {
-  // check char by char
-  const wxChar *pszTxt;
-  for ( pszTxt = c_str(); *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
+    // 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('$'):
+            case _T('('):
+            case _T(')'):
+            case _T('|'):
+            case _T('+'):
+            case _T('\\'):
+                // these characters are special in a RE, quote them
+                // (however note that we don't quote '[' and ']' to allow
+                // using them for Unix shell like matching)
+                pattern += _T('\\');
+                // fall through
+
+            default:
+                pattern += *pszMask;
+        }
+
+        pszMask++;
+    }
+    pattern += _T('$');
+
+    // 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;
+          return false;
 
-        // pszText and pszMask will be incremented in the loop statement
+        // pszTxt and pszMask will be incremented in the loop statement
 
         break;
 
       case wxT('*'):
         {
+          // remember where we started to be able to backtrack later
+          pszLastStarInText = pszTxt;
+          pszLastStarInMask = pszMask;
+
           // ignore special chars immediately following this one
+          // (should this be an error?)
           while ( *pszMask == wxT('*') || *pszMask == wxT('?') )
             pszMask++;
 
           // if there is nothing more, match
           if ( *pszMask == wxT('\0') )
-            return TRUE;
+            return true;
 
           // are there any other metacharacters in the mask?
           size_t uiLenMask;
@@ -1360,7 +1966,7 @@ bool wxString::Matches(const wxChar *pszMask) const
           wxString strToMatch(pszMask, uiLenMask);
           const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);
           if ( pMatch == NULL )
-            return FALSE;
+            return false;
 
           // -1 to compensate "++" in the loop
           pszTxt = pMatch + uiLenMask - 1;
@@ -1370,20 +1976,36 @@ bool wxString::Matches(const wxChar *pszMask) const
 
       default:
         if ( *pszMask != *pszTxt )
-          return FALSE;
+          return false;
         break;
     }
   }
 
   // match only if nothing left
-  return *pszTxt == wxT('\0');
+  if ( *pszTxt == wxT('\0') )
+    return true;
+
+  // if we failed to match, backtrack if we can
+  if ( pszLastStarInText ) {
+    pszTxt = pszLastStarInText + 1;
+    pszMask = pszLastStarInMask;
+
+    pszLastStarInText = NULL;
+
+    // don't bother resetting pszLastStarInMask, it's unnecessary
+
+    goto match;
+  }
+
+  return false;
+#endif // wxUSE_REGEX/!wxUSE_REGEX
 }
 
 // Count the number of chars
 int wxString::Freq(wxChar ch) const
 {
     int count = 0;
-    int len = Len();
+    int len = length();
     for (int i = 0; i < len; i++)
     {
         if (GetChar(i) == ch)
@@ -1408,275 +2030,43 @@ int wxString::sprintf(const wxChar *pszFormat, ...)
     return iLen;
   }
 
-// ---------------------------------------------------------------------------
-// standard C++ library string functions
-// ---------------------------------------------------------------------------
-#ifdef  wxSTD_STRING_COMPATIBILITY
-
-wxString& wxString::insert(size_t nPos, const wxString& str)
-{
-  wxASSERT( str.GetStringData()->IsValid() );
-  wxASSERT( nPos <= Len() );
-
-  if ( !str.IsEmpty() ) {
-    wxString strTmp;
-    wxChar *pc = strTmp.GetWriteBuf(Len() + str.Len());
-    wxStrncpy(pc, c_str(), nPos);
-    wxStrcpy(pc + nPos, str);
-    wxStrcpy(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 wxChar *p = wxStrstr(c_str() + nStart, str);
-
-  return p == NULL ? npos : p - c_str();
-}
+// ============================================================================
+// ArrayString
+// ============================================================================
 
-// VC++ 1.5 can't cope with the default argument in the header.
-#if !defined(__VISUALC__) || defined(__WIN32__)
-size_t wxString::find(const wxChar* sz, size_t nStart, size_t n) const
-{
-  return find(wxString(sz, n == npos ? 0 : n), nStart);
-}
-#endif // VC++ 1.5
+#include "wx/arrstr.h"
 
-// Gives a duplicate symbol (presumably a case-insensitivity problem)
-#if !defined(__BORLANDC__)
-size_t wxString::find(wxChar ch, size_t nStart) const
+wxArrayString::wxArrayString(size_t sz, const wxChar** a)
 {
-  wxASSERT( nStart <= Len() );
-
-  const wxChar *p = wxStrchr(c_str() + nStart, ch);
-
-  return p == NULL ? npos : p - c_str();
-}
+#if !wxUSE_STL
+    Init(false);
 #endif
-
-size_t wxString::rfind(const wxString& str, size_t nStart) const
-{
-  wxASSERT( str.GetStringData()->IsValid() );
-  wxASSERT( nStart <= Len() );
-
-  // TODO could be made much quicker than that
-  const wxChar *p = c_str() + (nStart == npos ? Len() : nStart);
-  while ( p >= c_str() + str.Len() ) {
-    if ( wxStrncmp(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(__VISUALC__) || defined(__WIN32__)
-size_t wxString::rfind(const wxChar* sz, size_t nStart, size_t n) const
-{
-    return rfind(wxString(sz, n == npos ? 0 : n), nStart);
-}
-
-size_t wxString::rfind(wxChar ch, size_t nStart) const
-{
-    if ( nStart == npos )
-    {
-        nStart = Len();
-    }
-    else
-    {
-        wxASSERT( nStart <= Len() );
-    }
-
-    const wxChar *p = wxStrrchr(c_str(), ch);
-
-    if ( p == NULL )
-        return npos;
-
-    size_t result = p - c_str();
-    return ( result > nStart ) ? npos : result;
-}
-#endif // VC++ 1.5
-
-size_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
-{
-    const wxChar *start = c_str() + nStart;
-    const wxChar *firstOf = wxStrpbrk(start, sz);
-    if ( firstOf )
-        return firstOf - start;
-    else
-        return npos;
-}
-
-size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
-{
-    if ( nStart == npos )
-    {
-        nStart = Len();
-    }
-    else
-    {
-        wxASSERT( nStart <= Len() );
-    }
-
-    for ( const wxChar *p = c_str() + length() - 1; p >= c_str(); p-- )
-    {
-        if ( wxStrchr(sz, *p) )
-            return p - c_str();
-    }
-
-    return npos;
-}
-
-size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
-{
-    if ( nStart == npos )
-    {
-        nStart = Len();
-    }
-    else
-    {
-        wxASSERT( nStart <= Len() );
-    }
-
-    size_t nAccept = wxStrspn(c_str() + nStart, sz);
-    if ( nAccept >= length() - nStart )
-        return npos;
-    else
-        return nAccept;
-}
-
-size_t wxString::find_first_not_of(wxChar ch, size_t nStart) const
-{
-    wxASSERT( nStart <= Len() );
-
-    for ( const wxChar *p = c_str() + nStart; *p; p++ )
-    {
-        if ( *p != ch )
-            return p - c_str();
-    }
-
-    return npos;
-}
-
-size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
-{
-    if ( nStart == npos )
-    {
-        nStart = Len();
-    }
-    else
-    {
-        wxASSERT( nStart <= Len() );
-    }
-
-    for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
-    {
-        if ( !wxStrchr(sz, *p) )
-            return p - c_str();
-    }
-
-    return npos;
-}
-
-size_t wxString::find_last_not_of(wxChar ch, size_t nStart) const
-{
-    if ( nStart == npos )
-    {
-        nStart = Len();
-    }
-    else
-    {
-        wxASSERT( nStart <= Len() );
-    }
-
-    for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
-    {
-        if ( *p != ch )
-            return p - c_str();
-    }
-
-    return npos;
-}
-
-wxString wxString::substr(size_t nStart, size_t nLen) const
-{
-  // npos means 'take all'
-  if ( nLen == npos )
-    nLen = 0;
-
-  wxASSERT( nStart + nLen <= Len() );
-
-  return wxString(c_str() + nStart, nLen == npos ? 0 : nLen);
-}
-
-wxString& wxString::erase(size_t nStart, size_t nLen)
-{
-  wxString strTmp(c_str(), nStart);
-  if ( nLen != npos ) {
-    wxASSERT( nStart + nLen <= Len() );
-
-    strTmp.append(c_str() + nStart + nLen);
-  }
-
-  *this = strTmp;
-  return *this;
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
-{
-  wxASSERT( nStart + nLen <= wxStrlen(sz) );
-
-  wxString strTmp;
-  if ( nStart != 0 )
-    strTmp.append(c_str(), nStart);
-  strTmp += sz;
-  strTmp.append(c_str() + nStart + nLen);
-
-  *this = strTmp;
-  return *this;
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch)
-{
-  return replace(nStart, nLen, wxString(ch, nCount));
-}
-
-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));
+    for (size_t i=0; i < sz; i++)
+        Add(a[i]);
 }
 
-wxString& wxString::replace(size_t nStart, size_t nLen,
-                        const wxChar* sz, size_t nCount)
+wxArrayString::wxArrayString(size_t sz, const wxString* a)
 {
-  return replace(nStart, nLen, wxString(sz, nCount));
+#if !wxUSE_STL
+    Init(false);
+#endif
+    for (size_t i=0; i < sz; i++)
+        Add(a[i]);
 }
 
-#endif  //std::string compatibility
-
-// ============================================================================
-// ArrayString
-// ============================================================================
+#if !wxUSE_STL
 
-// size increment = max(50% of current size, ARRAY_MAXSIZE_INCREMENT)
+// size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)
 #define   ARRAY_MAXSIZE_INCREMENT       4096
+
 #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
-wxArrayString::wxArrayString(bool autoSort)
+void wxArrayString::Init(bool autoSort)
 {
   m_nSize  =
   m_nCount = 0;
@@ -1687,10 +2077,7 @@ wxArrayString::wxArrayString(bool autoSort)
 // copy ctor
 wxArrayString::wxArrayString(const wxArrayString& src)
 {
-  m_nSize  =
-  m_nCount = 0;
-  m_pItems = (wxChar **) NULL;
-  m_autoSort = src.m_autoSort;
+  Init(src.m_autoSort);
 
   *this = src;
 }
@@ -1703,6 +2090,8 @@ wxArrayString& wxArrayString::operator=(const wxArrayString& src)
 
   Copy(src);
 
+  m_autoSort = src.m_autoSort;
+
   return *this;
 }
 
@@ -1711,47 +2100,38 @@ void wxArrayString::Copy(const wxArrayString& src)
   if ( src.m_nCount > ARRAY_DEFAULT_INITIAL_SIZE )
     Alloc(src.m_nCount);
 
-  // we can't just copy the pointers here because otherwise we would share
-  // the strings with another array because strings are ref counted
-#if 0
-  if ( m_nCount != 0 )
-    memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(wxChar *));
-#endif // 0
-
   for ( size_t n = 0; n < src.m_nCount; n++ )
     Add(src[n]);
-
-  // if the other array is auto sorted too, we're already sorted, but
-  // otherwise we should rearrange the items
-  if ( m_autoSort && !src.m_autoSort )
-    Sort();
 }
 
 // grow the array
-void wxArrayString::Grow()
+void wxArrayString::Grow(size_t nIncrement)
 {
   // 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;
+      if (m_nSize < nIncrement)
+          m_nSize = nIncrement;
       m_pItems = new wxChar *[m_nSize];
     }
     else {
       // otherwise when it's called for the first time, nIncrement would be 0
       // and the array would never be expanded
-#if defined(__VISAGECPP__) && defined(__WXDEBUG__)
-      int array_size = ARRAY_DEFAULT_INITIAL_SIZE;
-      wxASSERT( array_size != 0 );
-#else
-      wxASSERT( ARRAY_DEFAULT_INITIAL_SIZE != 0 );
-#endif
-
       // add 50% but not too much
-      size_t nIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
+      size_t ndefIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
                           ? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
-      if ( nIncrement > ARRAY_MAXSIZE_INCREMENT )
-        nIncrement = ARRAY_MAXSIZE_INCREMENT;
+      if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT )
+        ndefIncrement = ARRAY_MAXSIZE_INCREMENT;
+      if ( nIncrement < ndefIncrement )
+        nIncrement = ndefIncrement;
       m_nSize += nIncrement;
       wxChar **pNew = new wxChar *[m_nSize];
 
@@ -1800,11 +2180,14 @@ wxArrayString::~wxArrayString()
   wxDELETEA(m_pItems);
 }
 
+void wxArrayString::reserve(size_t nSize)
+{
+    Alloc(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();
@@ -1831,6 +2214,30 @@ void wxArrayString::Shrink()
   }
 }
 
+#if WXWIN_COMPATIBILITY_2_4
+
+// return a wxString[] as required for some control ctors.
+wxString* wxArrayString::GetStringArray() const
+{
+    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
 {
@@ -1881,7 +2288,7 @@ int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
 }
 
 // add item at the end
-size_t wxArrayString::Add(const wxString& str)
+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
@@ -1892,7 +2299,7 @@ size_t wxArrayString::Add(const wxString& str)
     while ( lo < hi ) {
       i = (lo + hi)/2;
 
-      res = wxStrcmp(str, m_pItems[i]);
+      res = str.Cmp(m_pItems[i]);
       if ( res < 0 )
         hi = i;
       else if ( res > 0 )
@@ -1905,54 +2312,99 @@ size_t wxArrayString::Add(const wxString& str)
 
     wxASSERT_MSG( lo == hi, wxT("binary search broken") );
 
-    Insert(str, lo);
+    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();
-
-    // just append
-    m_pItems[m_nCount] = (wxChar *)str.c_str(); // const_cast
+    for (size_t i = 0; i < nInsert; i++)
+    {
+        // the string data must not be deleted!
+        str.GetStringData()->Lock();
 
-    return m_nCount++;
+        // 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
-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() );
 
   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();
+  Grow(nInsert);
 
-  memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex],
+  memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex],
           (m_nCount - nIndex)*sizeof(wxChar *));
 
-  str.GetStringData()->Lock();
-  m_pItems[nIndex] = (wxChar *)str.c_str();
+  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);
+
+    // reset "it" since it can change inside Grow()
+    it = begin() + idx;
+
+    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;
+    }
+}
+
+// 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)
-void wxArrayString::Remove(size_t nIndex)
+void wxArrayString::RemoveAt(size_t nIndex, size_t nRemove)
 {
-  wxCHECK_RET( nIndex <= m_nCount, wxT("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
-  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(wxChar *));
-  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)
@@ -1963,7 +2415,14 @@ void wxArrayString::Remove(const wxChar *sz)
   wxCHECK_RET( iIndex != wxNOT_FOUND,
                wxT("removing inexistent element in wxArrayString::Remove") );
 
-  Remove(iIndex);
+  RemoveAt(iIndex);
+}
+
+void wxArrayString::assign(const_iterator first, const_iterator last)
+{
+    reserve(last - first);
+    for(; first != last; ++first)
+        push_back(*first);
 }
 
 // ----------------------------------------------------------------------------
@@ -1975,19 +2434,7 @@ void wxArrayString::Remove(const wxChar *sz)
 #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()
+  static wxCriticalSection gs_critsectStringSort;
 #endif // wxUSE_THREADS
 
 // function to use for string comparaison
@@ -1995,10 +2442,11 @@ 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;
+static bool gs_sortAscending = true;
 
 // function which is called by quick sort
-static int LINKAGEMODE wxStringCompareFunction(const void *first, const void *second)
+extern "C" int wxC_CALLING_CONV     // LINKAGEMODE
+wxStringCompareFunction(const void *first, const void *second)
 {
   wxString *strFirst = (wxString *)first;
   wxString *strSecond = (wxString *)second;
@@ -2008,7 +2456,7 @@ static int LINKAGEMODE wxStringCompareFunction(const void *first, const void *se
   }
   else {
     // maybe we should use wxStrcoll
-    int result = wxStrcmp(strFirst->c_str(), strSecond->c_str());
+    int result = strFirst->Cmp(*strSecond);
 
     return gs_sortAscending ? result : -result;
   }
@@ -2017,26 +2465,31 @@ static int LINKAGEMODE wxStringCompareFunction(const void *first, const void *se
 // sort array elements using passed comparaison function
 void wxArrayString::Sort(CompareFunction compareFunction)
 {
-  START_SORT();
+  wxCRIT_SECT_LOCKER(lockCmpFunc, gs_critsectStringSort);
 
   wxASSERT( !gs_compareFunction );  // must have been reset to NULL
   gs_compareFunction = compareFunction;
 
   DoSort();
 
-  END_SORT();
+  // reset it to NULL so that Sort(bool) will work the next time
+  gs_compareFunction = NULL;
 }
 
-void wxArrayString::Sort(bool reverseOrder)
+extern "C"
 {
-  START_SORT();
-
-  wxASSERT( !gs_compareFunction );  // must have been reset to NULL
-  gs_sortAscending = !reverseOrder;
+    typedef int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first,
+                                                       const void *second);
+}
 
-  DoSort();
+void wxArrayString::Sort(CompareFunction2 compareFunction)
+{
+  qsort(m_pItems, m_nCount, sizeof(wxChar *), (wxStringCompareFn)compareFunction);
+}
 
-  END_SORT();
+void wxArrayString::Sort(bool reverseOrder)
+{
+  Sort(reverseOrder ? wxStringSortDescending : wxStringSortAscending);
 }
 
 void wxArrayString::DoSort()
@@ -2048,3 +2501,28 @@ void wxArrayString::DoSort()
   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);
+}
+
+int wxCMPFUNC_CONV wxStringSortDescending(wxString* s1, wxString* s2)
+{
+    return -s1->Cmp(*s2);
+}