fixing modal dialog quit after nested message box problem

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

diff --git a/src/common/string.cpp b/src/common/string.cpp
index e401661db80bd78982742e51d23610cd84ab584c..511068e1011d0d7fb5b470a26a879b53bed45758 100644 (file)
--- a/src/common/string.cpp
+++ b/src/common/string.cpp
@@ -24,6 +24,7 @@
 #ifndef WX_PRECOMP
     #include "wx/string.h"
     #include "wx/wxcrtvararg.h"
 #ifndef WX_PRECOMP
     #include "wx/string.h"
     #include "wx/wxcrtvararg.h"

+    #include "wx/log.h"

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


@@ -35,11 +36,13 @@
 #include <string.h>
 #include <stdlib.h>
 
 #include <string.h>
 #include <stdlib.h>
 

-#ifdef __SALFORDC__
-    #include <clib.h>
-#endif
-

 #include "wx/hashmap.h"
 #include "wx/hashmap.h"

+#include "wx/vector.h"
+#include "wx/xlocale.h"
+
+#ifdef __WXMSW__
+    #include "wx/msw/wrapwin.h"
+#endif // __WXMSW__

 
 // string handling functions used by wxString:
 #if wxUSE_UNICODE_UTF8
 
 // string handling functions used by wxString:
 #if wxUSE_UNICODE_UTF8


@@ -54,6 +57,18 @@
     #define wxStringStrlen   wxStrlen
 #endif
 
     #define wxStringStrlen   wxStrlen
 #endif
 

+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+namespace wxPrivate
+{
+
+static UntypedBufferData s_untypedNullData(NULL, 0);
+
+UntypedBufferData * const untypedNullDataPtr = &s_untypedNullData;
+
+} // namespace wxPrivate

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


@@ -62,6 +77,105 @@
 //According to STL _must_ be a -1 size_t
 const size_t wxString::npos = (size_t) -1;
 
 //According to STL _must_ be a -1 size_t
 const size_t wxString::npos = (size_t) -1;
 

+#if wxUSE_STRING_POS_CACHE
+
+#ifdef wxHAS_COMPILER_TLS
+
+wxTLS_TYPE(wxString::Cache) wxString::ms_cache;
+
+#else // !wxHAS_COMPILER_TLS
+
+struct wxStrCacheInitializer
+{
+    wxStrCacheInitializer()
+    {
+        // calling this function triggers s_cache initialization in it, and
+        // from now on it becomes safe to call from multiple threads
+        wxString::GetCache();
+    }
+};
+
+/*
+wxString::Cache& wxString::GetCache()
+{
+    static wxTLS_TYPE(Cache) s_cache;
+
+    return wxTLS_VALUE(s_cache);
+}
+*/
+
+static wxStrCacheInitializer gs_stringCacheInit;
+
+#endif // wxHAS_COMPILER_TLS/!wxHAS_COMPILER_TLS
+
+// gdb seems to be unable to display thread-local variables correctly, at least
+// not my 6.4.98 version under amd64, so provide this debugging helper to do it
+#if wxDEBUG_LEVEL >= 2
+
+struct wxStrCacheDumper
+{
+    static void ShowAll()
+    {
+        puts("*** wxString cache dump:");
+        for ( unsigned n = 0; n < wxString::Cache::SIZE; n++ )
+        {
+            const wxString::Cache::Element&
+                c = wxString::GetCacheBegin()[n];
+
+            printf("\t%u%s\t%p: pos=(%lu, %lu), len=%ld\n",
+                   n,
+                   n == wxString::LastUsedCacheElement() ? " [*]" : "",
+                   c.str,
+                   (unsigned long)c.pos,
+                   (unsigned long)c.impl,
+                   (long)c.len);
+        }
+    }
+};
+
+void wxDumpStrCache() { wxStrCacheDumper::ShowAll(); }
+
+#endif // wxDEBUG_LEVEL >= 2
+
+#ifdef wxPROFILE_STRING_CACHE
+
+wxString::CacheStats wxString::ms_cacheStats;
+
+struct wxStrCacheStatsDumper
+{
+    ~wxStrCacheStatsDumper()
+    {
+        const wxString::CacheStats& stats = wxString::ms_cacheStats;
+
+        if ( stats.postot )
+        {
+            puts("*** wxString cache statistics:");
+            printf("\tTotal non-trivial calls to PosToImpl(): %u\n",
+                   stats.postot);
+            printf("\tHits %u (of which %u not used) or %.2f%%\n",
+                   stats.poshits,
+                   stats.mishits,
+                   100.*float(stats.poshits - stats.mishits)/stats.postot);
+            printf("\tAverage position requested: %.2f\n",
+                   float(stats.sumpos) / stats.postot);
+            printf("\tAverage offset after cached hint: %.2f\n",
+                   float(stats.sumofs) / stats.postot);
+        }
+
+        if ( stats.lentot )
+        {
+            printf("\tNumber of calls to length(): %u, hits=%.2f%%\n",
+                   stats.lentot, 100.*float(stats.lenhits)/stats.lentot);
+        }
+    }
+};
+
+static wxStrCacheStatsDumper s_showCacheStats;
+
+#endif // wxPROFILE_STRING_CACHE
+
+#endif // wxUSE_STRING_POS_CACHE
+

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


@@ -73,7 +187,13 @@ const size_t wxString::npos = (size_t) -1;
 wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
 {
 #if wxUSE_UNICODE && !wxUSE_UNICODE_UTF8
 wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
 {
 #if wxUSE_UNICODE && !wxUSE_UNICODE_UTF8

-    return os << (const char *)str.AsCharBuf();
+    const wxScopedCharBuffer buf(str.AsCharBuf());
+    if ( !buf )
+        os.clear(wxSTD ios_base::failbit);
+    else
+        os << buf.data();
+
+    return os;

 #else
     return os << str.AsInternal();
 #endif
 #else
     return os << str.AsInternal();
 #endif


@@ -84,13 +204,13 @@ wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
     return os << str.c_str();
 }
 
     return os << str.c_str();
 }
 

-wxSTD ostream& operator<<(wxSTD ostream& os, const wxCharBuffer& str)
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxScopedCharBuffer& str)

 {
     return os << str.data();
 }
 
 #ifndef __BORLANDC__
 {
     return os << str.data();
 }
 
 #ifndef __BORLANDC__

-wxSTD ostream& operator<<(wxSTD ostream& os, const wxWCharBuffer& str)
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxScopedWCharBuffer& str)

 {
     return os << str.data();
 }
 {
     return os << str.data();
 }


@@ -108,7 +228,7 @@ wxSTD wostream& operator<<(wxSTD wostream& wos, const wxCStrData& str)
     return wos << str.AsWChar();
 }
 
     return wos << str.AsWChar();
 }
 

-wxSTD wostream& operator<<(wxSTD wostream& wos, const wxWCharBuffer& str)
+wxSTD wostream& operator<<(wxSTD wostream& wos, const wxScopedWCharBuffer& str)

 {
     return wos << str.data();
 }
 {
     return wos << str.data();
 }


@@ -127,22 +247,30 @@ void wxString::PosLenToImpl(size_t pos, size_t len,
                             size_t *implPos, size_t *implLen) const
 {
     if ( pos == npos )
                             size_t *implPos, size_t *implLen) const
 {
     if ( pos == npos )

+    {

         *implPos = npos;
         *implPos = npos;

-    else
+    }
+    else // have valid start position

     {
     {

-        const_iterator i = begin() + pos;
-        *implPos = wxStringImpl::const_iterator(i.impl()) - m_impl.begin();
+        const const_iterator b = GetIterForNthChar(pos);
+        *implPos = wxStringImpl::const_iterator(b.impl()) - m_impl.begin();

         if ( len == npos )
         if ( len == npos )

+        {

             *implLen = npos;
             *implLen = npos;

-        else
+        }
+        else // have valid length too

         {
         {

-            // too large length is interpreted as "to the end of the string"
-            // FIXME-UTF8: verify this is the case in std::string, assert
-            // otherwise
-            if ( pos + len > length() )
-                len = length() - pos;
-
-            *implLen = (i + len).impl() - i.impl();
+            // we need to handle the case of length specifying a substring
+            // going beyond the end of the string, just as std::string does
+            const const_iterator e(end());
+            const_iterator i(b);
+            while ( len && i <= e )
+            {
+                ++i;
+                --len;
+            }
+
+            *implLen = i.impl() - b.impl();

         }
     }
 }
         }
     }
 }


@@ -238,95 +366,6 @@ wxString::~wxString()
 }
 #endif
 
 }
 #endif
 

-#if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
-const char* wxCStrData::AsChar() const
-{
-#if wxUSE_UNICODE_UTF8
-    if ( wxLocaleIsUtf8 )
-        return AsInternal();
-#endif
-    // under non-UTF8 locales, we have to convert the internal UTF-8
-    // representation using wxConvLibc and cache the result
-
-    wxString *str = wxConstCast(m_str, wxString);
-
-    // convert the string:
-    //
-    // FIXME-UTF8: we'd like to do the conversion in the existing buffer (if we
-    //             have it) but it's unfortunately not obvious to implement
-    //             because we don't know how big buffer do we need for the
-    //             given string length (in case of multibyte encodings, e.g.
-    //             ISO-2022-JP or UTF-8 when internal representation is wchar_t)
-    //
-    //             One idea would be to store more than just m_convertedToChar
-    //             in wxString: then we could record the length of the string
-    //             which was converted the last time and try to reuse the same
-    //             buffer if the current length is not greater than it (this
-    //             could still fail because string could have been modified in
-    //             place but it would work most of the time, so we'd do it and
-    //             only allocate the new buffer if in-place conversion returned
-    //             an error). We could also store a bit saying if the string
-    //             was modified since the last conversion (and update it in all
-    //             operation modifying the string, of course) to avoid unneeded
-    //             consequential conversions. But both of these ideas require
-    //             adding more fields to wxString and require profiling results
-    //             to be sure that we really gain enough from them to justify
-    //             doing it.
-    wxCharBuffer buf(str->mb_str());
-
-    // if it failed, return empty string and not NULL to avoid crashes in code
-    // written with either wxWidgets 2 wxString or std::string behaviour in
-    // mind: neither of them ever returns NULL and so we shouldn't neither
-    if ( !buf )
-        return "";
-
-    if ( str->m_convertedToChar &&
-         strlen(buf) == strlen(str->m_convertedToChar) )
-    {
-        // keep the same buffer for as long as possible, so that several calls
-        // to c_str() in a row still work:
-        strcpy(str->m_convertedToChar, buf);
-    }
-    else
-    {
-        str->m_convertedToChar = buf.release();
-    }
-
-    // and keep it:
-    return str->m_convertedToChar + m_offset;
-}
-#endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
-
-#if !wxUSE_UNICODE_WCHAR
-const wchar_t* wxCStrData::AsWChar() const
-{
-    wxString *str = wxConstCast(m_str, wxString);
-
-    // convert the string:
-    wxWCharBuffer buf(str->wc_str());
-
-    // notice that here, unlike above in AsChar(), conversion can't fail as our
-    // internal UTF-8 is always well-formed -- or the string was corrupted and
-    // all bets are off anyhow
-
-    // FIXME-UTF8: do the conversion in-place in the existing buffer
-    if ( str->m_convertedToWChar &&
-         wxWcslen(buf) == wxWcslen(str->m_convertedToWChar) )
-    {
-        // keep the same buffer for as long as possible, so that several calls
-        // to c_str() in a row still work:
-        memcpy(str->m_convertedToWChar, buf, sizeof(wchar_t) * wxWcslen(buf));
-    }
-    else
-    {
-        str->m_convertedToWChar = buf.release();
-    }
-
-    // and keep it:
-    return str->m_convertedToWChar + m_offset;
-}
-#endif // !wxUSE_UNICODE_WCHAR
-

 // ===========================================================================
 // wxString class core
 // ===========================================================================
 // ===========================================================================
 // wxString class core
 // ===========================================================================


@@ -342,15 +381,15 @@ wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
 {
     // anything to do?
     if ( !psz || nLength == 0 )
 {
     // anything to do?
     if ( !psz || nLength == 0 )

-        return SubstrBufFromMB(L"", 0);
+        return SubstrBufFromMB(wxWCharBuffer(L""), 0);

 
     if ( nLength == npos )
         nLength = wxNO_LEN;
 
     size_t wcLen;
 
     if ( nLength == npos )
         nLength = wxNO_LEN;
 
     size_t wcLen;

-    wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+    wxScopedWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));

     if ( !wcLen )
     if ( !wcLen )

-        return SubstrBufFromMB(_T(""), 0);
+        return SubstrBufFromMB(wxWCharBuffer(L""), 0);

     else
         return SubstrBufFromMB(wcBuf, wcLen);
 }
     else
         return SubstrBufFromMB(wcBuf, wcLen);
 }


@@ -363,7 +402,7 @@ wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
 {
     // anything to do?
     if ( !psz || nLength == 0 )
 {
     // anything to do?
     if ( !psz || nLength == 0 )

-        return SubstrBufFromMB("", 0);
+        return SubstrBufFromMB(wxCharBuffer(""), 0);

 
     // if psz is already in UTF-8, we don't have to do the roundtrip to
     // wchar_t* and back:
 
     // if psz is already in UTF-8, we don't have to do the roundtrip to
     // wchar_t* and back:


@@ -373,7 +412,11 @@ wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
         // UTF-8 sequence and psz may be invalid:
         if ( wxStringOperations::IsValidUtf8String(psz, nLength) )
         {
         // UTF-8 sequence and psz may be invalid:
         if ( wxStringOperations::IsValidUtf8String(psz, nLength) )
         {

-            return SubstrBufFromMB(wxCharBuffer::CreateNonOwned(psz), nLength);
+            // we must pass the real string length to SubstrBufFromMB ctor
+            if ( nLength == npos )
+                nLength = psz ? strlen(psz) : 0;
+            return SubstrBufFromMB(wxScopedCharBuffer::CreateNonOwned(psz, nLength),
+                                   nLength);

         }
         // else: do the roundtrip through wchar_t*
     }
         }
         // else: do the roundtrip through wchar_t*
     }


@@ -383,9 +426,9 @@ wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
 
     // first convert to wide string:
     size_t wcLen;
 
     // first convert to wide string:
     size_t wcLen;

-    wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+    wxScopedWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));

     if ( !wcLen )
     if ( !wcLen )

-        return SubstrBufFromMB("", 0);
+        return SubstrBufFromMB(wxCharBuffer(""), 0);

 
     // and then to UTF-8:
     SubstrBufFromMB buf(ConvertStr(wcBuf, wcLen, wxMBConvStrictUTF8()));
 
     // and then to UTF-8:
     SubstrBufFromMB buf(ConvertStr(wcBuf, wcLen, wxMBConvStrictUTF8()));


@@ -403,71 +446,111 @@ wxString::SubstrBufFromWC wxString::ConvertStr(const wchar_t *pwz, size_t nLengt
 {
     // anything to do?
     if ( !pwz || nLength == 0 )
 {
     // anything to do?
     if ( !pwz || nLength == 0 )

-        return SubstrBufFromWC("", 0);
+        return SubstrBufFromWC(wxCharBuffer(""), 0);

 
     if ( nLength == npos )
         nLength = wxNO_LEN;
 
     size_t mbLen;
 
     if ( nLength == npos )
         nLength = wxNO_LEN;
 
     size_t mbLen;

-    wxCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));
+    wxScopedCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));

     if ( !mbLen )
     if ( !mbLen )

-        return SubstrBufFromWC("", 0);
+        return SubstrBufFromWC(wxCharBuffer(""), 0);

     else
         return SubstrBufFromWC(mbBuf, mbLen);
 }
 #endif // wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
 
     else
         return SubstrBufFromWC(mbBuf, mbLen);
 }
 #endif // wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
 

+// This std::string::c_str()-like method returns a wide char pointer to string
+// contents. In wxUSE_UNICODE_WCHAR case it is trivial as it can simply return
+// a pointer to the internal representation. Otherwise a conversion is required
+// and it returns a temporary buffer.
+//
+// However for compatibility with c_str() and to avoid breaking existing code
+// doing
+//
+//      for ( const wchar_t *p = s.wc_str(); *p; p++ )
+//          ... use *p...
+//
+// we actually need to ensure that the returned buffer is _not_ temporary and
+// so we use wxString::m_convertedToWChar to store the returned data
+#if !wxUSE_UNICODE_WCHAR

 
 

-#if wxUSE_UNICODE_WCHAR
-
-//Convert wxString in Unicode mode to a multi-byte string
-const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
+const wchar_t *wxString::AsWChar(const wxMBConv& conv) const

 {
 {

-    return conv.cWC2MB(wx_str(), length() + 1 /* size, not length */, NULL);
-}
+    const char * const strMB = m_impl.c_str();
+    const size_t lenMB = m_impl.length();

 
 

-#elif wxUSE_UNICODE_UTF8
+    // find out the size of the buffer needed
+    const size_t lenWC = conv.ToWChar(NULL, 0, strMB, lenMB);
+    if ( lenWC == wxCONV_FAILED )
+        return NULL;

 
 

-const wxWCharBuffer wxString::wc_str() const
-{
-    return wxMBConvStrictUTF8().cMB2WC
-                                (
-                                    m_impl.c_str(),
-                                    m_impl.length() + 1, // size, not length
-                                    NULL
-                                );
+    // keep the same buffer if the string size didn't change: this is not only
+    // an optimization but also ensure that code which modifies string
+    // character by character (without changing its length) can continue to use
+    // the pointer returned by a previous wc_str() call even after changing the
+    // string
+
+    // TODO-UTF8: we could check for ">" instead of "!=" here as this would
+    //            allow to save on buffer reallocations but at the cost of
+    //            consuming (even) more memory, we should benchmark this to
+    //            determine if it's worth doing
+    if ( !m_convertedToWChar.m_str || lenWC != m_convertedToWChar.m_len )
+    {
+        if ( !const_cast<wxString *>(this)->m_convertedToWChar.Extend(lenWC) )
+            return NULL;
+    }
+
+    // finally do convert
+    m_convertedToWChar.m_str[lenWC] = L'\0';
+    if ( conv.ToWChar(m_convertedToWChar.m_str, lenWC,
+                      strMB, lenMB) == wxCONV_FAILED )
+        return NULL;
+
+    return m_convertedToWChar.m_str;

 }
 
 }
 

-const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
+#endif // !wxUSE_UNICODE_WCHAR
+
+
+// Same thing for mb_str() which returns a normal char pointer to string
+// contents: this always requires converting it to the specified encoding in
+// non-ANSI build except if we need to convert to UTF-8 and this is what we
+// already use internally.
+#if wxUSE_UNICODE
+
+const char *wxString::AsChar(const wxMBConv& conv) const

 {
 {

+#if wxUSE_UNICODE_UTF8

     if ( conv.IsUTF8() )
     if ( conv.IsUTF8() )

-        return wxCharBuffer::CreateNonOwned(m_impl.c_str());
+        return m_impl.c_str();

 
 

-    // FIXME-UTF8: use wc_str() here once we have buffers with length
+    const wchar_t * const strWC = AsWChar(wxMBConvStrictUTF8());
+    const size_t lenWC = m_convertedToWChar.m_len;
+#else // wxUSE_UNICODE_WCHAR
+    const wchar_t * const strWC = m_impl.c_str();
+    const size_t lenWC = m_impl.length();
+#endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR

 
 

-    size_t wcLen;
-    wxWCharBuffer wcBuf(wxMBConvStrictUTF8().cMB2WC
-                                             (
-                                                m_impl.c_str(),
-                                                m_impl.length() + 1, // size
-                                                &wcLen
-                                             ));
-    if ( !wcLen )
-        return wxCharBuffer("");
+    const size_t lenMB = conv.FromWChar(NULL, 0, strWC, lenWC);
+    if ( lenMB == wxCONV_FAILED )
+        return NULL;

 
 

-    return conv.cWC2MB(wcBuf, wcLen+1, NULL);
-}
+    if ( !m_convertedToChar.m_str || lenMB != m_convertedToChar.m_len )
+    {
+        if ( !const_cast<wxString *>(this)->m_convertedToChar.Extend(lenMB) )
+            return NULL;
+    }

 
 

-#else // ANSI
+    m_convertedToChar.m_str[lenMB] = '\0';
+    if ( conv.FromWChar(m_convertedToChar.m_str, lenMB,
+                        strWC, lenWC) == wxCONV_FAILED )
+        return NULL;

 
 

-//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(wx_str(), length() + 1 /* size, not length */, NULL);
+    return m_convertedToChar.m_str;

 }
 
 }
 

-#endif // Unicode/ANSI
+#endif // wxUSE_UNICODE

 
 // shrink to minimal size (releasing extra memory)
 bool wxString::Shrink()
 
 // shrink to minimal size (releasing extra memory)
 bool wxString::Shrink()


@@ -991,8 +1074,36 @@ size_t wxString::find_last_not_of(const wxOtherCharType* sz, size_t nStart,
 
 int wxString::CmpNoCase(const wxString& s) const
 {
 
 int wxString::CmpNoCase(const wxString& s) const
 {

-    // FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added
+#if defined(__WXMSW__) && !wxUSE_UNICODE_UTF8
+    // prefer to use CompareString() if available as it's more efficient than
+    // doing it manual or even using wxStricmp() (see #10375)
+    switch ( ::CompareString(LOCALE_USER_DEFAULT, NORM_IGNORECASE,
+                             m_impl.c_str(), m_impl.length(),
+                             s.m_impl.c_str(), s.m_impl.length()) )
+    {
+        case CSTR_LESS_THAN:
+            return -1;
+
+        case CSTR_EQUAL:
+            return 0;
+
+        case CSTR_GREATER_THAN:
+            return 1;
+
+        default:
+            wxFAIL_MSG( "unexpected CompareString() return value" );
+            // fall through
+
+        case 0:
+            wxLogLastError("CompareString");
+            // use generic code below
+    }
+#endif // __WXMSW__ && !wxUSE_UNICODE_UTF8

 
 

+    // do the comparison manually: notice that we can't use wxStricmp() as it
+    // doesn't handle embedded NULs
+
+    // FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added

     const_iterator i1 = begin();
     const_iterator end1 = end();
     const_iterator i2 = s.begin();
     const_iterator i1 = begin();
     const_iterator end1 = end();
     const_iterator i2 = s.begin();


@@ -1066,7 +1177,7 @@ wxString wxString::FromAscii(char ascii)
     return wxString(wxUniChar((wchar_t)c));
 }
 
     return wxString(wxUniChar((wchar_t)c));
 }
 

-const wxCharBuffer wxString::ToAscii() const
+const wxScopedCharBuffer wxString::ToAscii() const

 {
     // this will allocate enough space for the terminating NUL too
     wxCharBuffer buffer(length());
 {
     // this will allocate enough space for the terminating NUL too
     wxCharBuffer buffer(length());


@@ -1170,7 +1281,7 @@ wxString wxString::Right(size_t nCount) const
   return dest;
 }
 
   return dest;
 }
 

-// get all characters after the last occurence of ch
+// get all characters after the last occurrence of ch

 // (returns the whole string if ch not found)
 wxString wxString::AfterLast(wxUniChar ch) const
 {
 // (returns the whole string if ch not found)
 wxString wxString::AfterLast(wxUniChar ch) const
 {


@@ -1179,7 +1290,7 @@ wxString wxString::AfterLast(wxUniChar ch) const
   if ( iPos == wxNOT_FOUND )
     str = *this;
   else
   if ( iPos == wxNOT_FOUND )
     str = *this;
   else

-    str = wx_str() + iPos + 1;
+    str.assign(*this, iPos + 1, npos);

 
   return str;
 }
 
   return str;
 }


@@ -1197,16 +1308,17 @@ wxString wxString::Left(size_t nCount) const
   return dest;
 }
 
   return dest;
 }
 

-// get all characters before the first occurence of ch
+// get all characters before the first occurrence of ch

 // (returns the whole string if ch not found)
 wxString wxString::BeforeFirst(wxUniChar ch) const
 {
   int iPos = Find(ch);
 // (returns the whole string if ch not found)
 wxString wxString::BeforeFirst(wxUniChar ch) const
 {
   int iPos = Find(ch);

-  if ( iPos == wxNOT_FOUND ) iPos = length();
+  if ( iPos == wxNOT_FOUND )
+      iPos = length();

   return wxString(*this, 0, iPos);
 }
 
   return wxString(*this, 0, iPos);
 }
 

-/// get all characters before the last occurence of ch
+/// get all characters before the last occurrence of ch

 /// (returns empty string if ch not found)
 wxString wxString::BeforeLast(wxUniChar ch) const
 {
 /// (returns empty string if ch not found)
 wxString wxString::BeforeLast(wxUniChar ch) const
 {


@@ -1218,19 +1330,19 @@ wxString wxString::BeforeLast(wxUniChar ch) const
   return str;
 }
 
   return str;
 }
 

-/// get all characters after the first occurence of ch
+/// get all characters after the first occurrence of ch

 /// (returns empty string if ch not found)
 wxString wxString::AfterFirst(wxUniChar ch) const
 {
   wxString str;
   int iPos = Find(ch);
   if ( iPos != wxNOT_FOUND )
 /// (returns empty string if ch not found)
 wxString wxString::AfterFirst(wxUniChar ch) const
 {
   wxString str;
   int iPos = Find(ch);
   if ( iPos != wxNOT_FOUND )

-    str = wx_str() + iPos + 1;
+      str.assign(*this, iPos + 1, npos);

 
   return str;
 }
 
 
   return str;
 }
 

-// replace first (or all) occurences of some substring with another one
+// replace first (or all) occurrences of some substring with another one

 size_t wxString::Replace(const wxString& strOld,
                          const wxString& strNew, bool bReplaceAll)
 {
 size_t wxString::Replace(const wxString& strOld,
                          const wxString& strNew, bool bReplaceAll)
 {


@@ -1238,36 +1350,92 @@ size_t wxString::Replace(const wxString& strOld,
     wxCHECK_MSG( !strOld.empty(), 0,
                  _T("wxString::Replace(): invalid parameter") );
 
     wxCHECK_MSG( !strOld.empty(), 0,
                  _T("wxString::Replace(): invalid parameter") );
 

+    wxSTRING_INVALIDATE_CACHE();
+

     size_t uiCount = 0;   // count of replacements made
 
     size_t uiCount = 0;   // count of replacements made
 

-    size_t uiOldLen = strOld.length();
-    size_t uiNewLen = strNew.length();
+    // optimize the special common case: replacement of one character by
+    // another one (in UTF-8 case we can only do this for ASCII characters)
+    //
+    // benchmarks show that this special version is around 3 times faster
+    // (depending on the proportion of matching characters and UTF-8/wchar_t
+    // build)
+    if ( strOld.m_impl.length() == 1 && strNew.m_impl.length() == 1 )
+    {
+        const wxStringCharType chOld = strOld.m_impl[0],
+                               chNew = strNew.m_impl[0];

 
 

-    size_t dwPos = 0;
+        // this loop is the simplified version of the one below
+        for ( size_t pos = 0; ; )
+        {
+            pos = m_impl.find(chOld, pos);
+            if ( pos == npos )
+                break;
+
+            m_impl[pos++] = chNew;
+
+            uiCount++;

 
 

-    while ( (*this)[dwPos] != wxT('\0') )
+            if ( !bReplaceAll )
+                break;
+        }
+    }
+    else if ( !bReplaceAll)

     {
     {

-        //DO NOT USE STRSTR HERE
-        //this string can contain embedded null characters,
-        //so strstr will function incorrectly
-        dwPos = find(strOld, dwPos);
-        if ( dwPos == npos )
-            break;                  // exit the loop
-        else
+        size_t pos = m_impl.find(strOld, 0);
+        if ( pos != npos )

         {
         {

-            //replace this occurance of the old string with the new one
-            replace(dwPos, uiOldLen, strNew, uiNewLen);
+            m_impl.replace(pos, strOld.m_impl.length(), strNew.m_impl);
+            uiCount = 1;
+        }
+    }
+    else // replace all occurrences
+    {
+        const size_t uiOldLen = strOld.m_impl.length();
+        const size_t uiNewLen = strNew.m_impl.length();

 
 

-            //move up pos past the string that was replaced
-            dwPos += uiNewLen;
+        // first scan the string to find all positions at which the replacement
+        // should be made
+        wxVector<size_t> replacePositions;

 
 

-            //increase replace count
+        size_t pos;
+        for ( pos = m_impl.find(strOld.m_impl, 0);
+              pos != npos;
+              pos = m_impl.find(strOld.m_impl, pos + uiOldLen))
+        {
+            replacePositions.push_back(pos);

             ++uiCount;
             ++uiCount;

+        }

 
 

-            // stop now?
-            if ( !bReplaceAll )
-                break;                  // exit the loop
+        if ( !uiCount )
+            return 0;
+
+        // allocate enough memory for the whole new string
+        wxString tmp;
+        tmp.m_impl.reserve(m_impl.length() + uiCount*(uiNewLen - uiOldLen));
+
+        // copy this string to tmp doing replacements on the fly
+        size_t replNum = 0;
+        for ( pos = 0; replNum < uiCount; replNum++ )
+        {
+            const size_t nextReplPos = replacePositions[replNum];
+
+            if ( pos != nextReplPos )
+            {
+                tmp.m_impl.append(m_impl, pos, nextReplPos - pos);
+            }
+
+            tmp.m_impl.append(strNew.m_impl);
+            pos = nextReplPos + uiOldLen;
+        }
+
+        if ( pos != m_impl.length() )
+        {
+            // append the rest of the string unchanged
+            tmp.m_impl.append(m_impl, pos, m_impl.length() - pos);

         }
         }

+
+        swap(tmp);

     }
 
     return uiCount;
     }
 
     return uiCount;


@@ -1342,13 +1510,27 @@ wxString& wxString::MakeLower()
   return *this;
 }
 
   return *this;
 }
 

+wxString& wxString::MakeCapitalized()
+{
+    const iterator en = end();
+    iterator it = begin();
+    if ( it != en )
+    {
+        *it = (wxChar)wxToupper(*it);
+        for ( ++it; it != en; ++it )
+            *it = (wxChar)wxTolower(*it);
+    }
+
+    return *this;
+}
+

 // ---------------------------------------------------------------------------
 // trimming and padding
 // ---------------------------------------------------------------------------
 
 // some compilers (VC++ 6.0 not to name them) return true for a call to
 // isspace('\xEA') in the C locale which seems to be broken to me, but we have
 // ---------------------------------------------------------------------------
 // trimming and padding
 // ---------------------------------------------------------------------------
 
 // some compilers (VC++ 6.0 not to name them) return true for a call to
 // isspace('\xEA') 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 
+// 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
 // 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


@@ -1444,63 +1626,105 @@ int wxString::Find(wxUniChar ch, bool bFromEnd) const
     #define DO_IF_NOT_WINCE(x)
 #endif
 
     #define DO_IF_NOT_WINCE(x)
 #endif
 

-#define WX_STRING_TO_INT_TYPE(val, base, func)                              \
-    wxCHECK_MSG( val, false, _T("NULL output pointer") );                   \
-    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );  \
-                                                                            \
+#define WX_STRING_TO_X_TYPE_START                                           \
+    wxCHECK_MSG( pVal, false, _T("NULL output pointer") );                  \

     DO_IF_NOT_WINCE( errno = 0; )                                           \
     DO_IF_NOT_WINCE( errno = 0; )                                           \

-                                                                            \

     const wxStringCharType *start = wx_str();                               \
     const wxStringCharType *start = wx_str();                               \

-    wxStringCharType *end;                                                  \
-    *val = func(start, &end, base);                                         \
-                                                                            \
+    wxStringCharType *end;
+
+#define WX_STRING_TO_X_TYPE_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 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)                                          \
-        DO_IF_NOT_WINCE( && (errno != ERANGE) )
+    if ( *end || end == start DO_IF_NOT_WINCE(|| errno == ERANGE) )         \
+        return false;                                                       \
+    *pVal = val;                                                            \
+    return true;
+
+bool wxString::ToLong(long *pVal, int base) const
+{
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );

 
 

-bool wxString::ToLong(long *val, int base) const
+    WX_STRING_TO_X_TYPE_START
+    long val = wxStrtol(start, &end, base);
+    WX_STRING_TO_X_TYPE_END
+}
+
+bool wxString::ToULong(unsigned long *pVal, int base) const

 {
 {

-    WX_STRING_TO_INT_TYPE(val, base, wxStrtol);
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+    WX_STRING_TO_X_TYPE_START
+    unsigned long val = wxStrtoul(start, &end, base);
+    WX_STRING_TO_X_TYPE_END

 }
 
 }
 

-bool wxString::ToULong(unsigned long *val, int base) const
+bool wxString::ToLongLong(wxLongLong_t *pVal, int base) const

 {
 {

-    WX_STRING_TO_INT_TYPE(val, base, wxStrtoul);
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+    WX_STRING_TO_X_TYPE_START
+    wxLongLong_t val = wxStrtoll(start, &end, base);
+    WX_STRING_TO_X_TYPE_END

 }
 
 }
 

-bool wxString::ToLongLong(wxLongLong_t *val, int base) const
+bool wxString::ToULongLong(wxULongLong_t *pVal, int base) const

 {
 {

-    WX_STRING_TO_INT_TYPE(val, base, wxStrtoll);
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+    WX_STRING_TO_X_TYPE_START
+    wxULongLong_t val = wxStrtoull(start, &end, base);
+    WX_STRING_TO_X_TYPE_END

 }
 
 }
 

-bool wxString::ToULongLong(wxULongLong_t *val, int base) const
+bool wxString::ToDouble(double *pVal) const

 {
 {

-    WX_STRING_TO_INT_TYPE(val, base, wxStrtoull);
+    WX_STRING_TO_X_TYPE_START
+    double val = wxStrtod(start, &end);
+    WX_STRING_TO_X_TYPE_END

 }
 
 }
 

-bool wxString::ToDouble(double *val) const
+#if wxUSE_XLOCALE
+
+bool wxString::ToCLong(long *pVal, int base) const

 {
 {

-    wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToDouble") );
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );

 
 

-#ifndef __WXWINCE__
-    errno = 0;
+    WX_STRING_TO_X_TYPE_START
+#if (wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE) && defined(wxHAS_XLOCALE_SUPPORT)
+    long val = wxStrtol_lA(start, &end, base, wxCLocale);
+#else
+    long val = wxStrtol_l(start, &end, base, wxCLocale);

 #endif
 #endif

+    WX_STRING_TO_X_TYPE_END
+}

 
 

-    const wxChar *start = c_str();
-    wxChar *end;
-    *val = wxStrtod(start, &end);
+bool wxString::ToCULong(unsigned long *pVal, int base) const
+{
+    wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid 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)
-#ifndef __WXWINCE__
-        && (errno != ERANGE)
+    WX_STRING_TO_X_TYPE_START
+#if (wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE) && defined(wxHAS_XLOCALE_SUPPORT)
+    unsigned long val = wxStrtoul_lA(start, &end, base, wxCLocale);
+#else
+    unsigned long val = wxStrtoul_l(start, &end, base, wxCLocale);

 #endif
 #endif

-    ;
+    WX_STRING_TO_X_TYPE_END

 }
 
 }
 

+bool wxString::ToCDouble(double *pVal) const
+{
+    WX_STRING_TO_X_TYPE_START
+#if (wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE) && defined(wxHAS_XLOCALE_SUPPORT)
+    double val = wxStrtod_lA(start, &end, wxCLocale);
+#else
+    double val = wxStrtod_l(start, &end, wxCLocale);
+#endif
+    WX_STRING_TO_X_TYPE_END
+}
+
+#endif  // wxUSE_XLOCALE
+

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


@@ -1620,7 +1844,7 @@ int wxString::DoPrintfUtf8(const char *format, ...)
     an undersized buffer and no other errno are defined we treat those two
     as meaning hard errors and everything else gets the old behavior which
     is to keep looping and increasing buffer size until the function succeeds.
     an undersized buffer and no other errno are defined we treat those two
     as meaning hard errors and everything else gets the old behavior which
     is to keep looping and increasing buffer size until the function succeeds.

- 
+

     In practice it's impossible to determine before compilation which behavior
     may be used.  The vswprintf function may have vsnprintf-like behavior or
     vice-versa.  Behavior detected on one release can theoretically change
     In practice it's impossible to determine before compilation which behavior
     may be used.  The vswprintf function may have vsnprintf-like behavior or
     vice-versa.  Behavior detected on one release can theoretically change


@@ -1730,7 +1954,7 @@ static int DoStringPrintfV(wxString& str,
         else if ( len >= size )
         {
 #if wxUSE_WXVSNPRINTF
         else if ( len >= size )
         {
 #if wxUSE_WXVSNPRINTF

-            // we know that our own implementation of wxVsnprintf() returns 
+            // we know that our own implementation of wxVsnprintf() returns

             // size+1 when there's not enough space but that's not the size
             // of the required buffer!
             size *= 2;      // so we just double the current size of the buffer
             // size+1 when there's not enough space but that's not the size
             // of the required buffer!
             size *= 2;      // so we just double the current size of the buffer


@@ -1842,8 +2066,8 @@ bool wxString::Matches(const wxString& mask) const
 
   // FIXME-UTF8: implement using iterators, remove #if
 #if wxUSE_UNICODE_UTF8
 
   // FIXME-UTF8: implement using iterators, remove #if
 #if wxUSE_UNICODE_UTF8

-  wxWCharBuffer maskBuf = mask.wc_str();
-  wxWCharBuffer txtBuf = wc_str();
+  const wxScopedWCharBuffer maskBuf = mask.wc_str();
+  const wxScopedWCharBuffer txtBuf = wc_str();

   const wxChar *pszMask = maskBuf.data();
   const wxChar *pszTxt = txtBuf.data();
 #else
   const wxChar *pszMask = maskBuf.data();
   const wxChar *pszTxt = txtBuf.data();
 #else


@@ -1945,38 +2169,3 @@ int wxString::Freq(wxUniChar ch) const
     return count;
 }
 
     return count;
 }
 

-// convert to upper case, return the copy of the string
-wxString wxString::Upper() const
-{ wxString s(*this); return s.MakeUpper(); }
-
-// convert to lower case, return the copy of the string
-wxString wxString::Lower() const { wxString s(*this); return s.MakeLower(); }
-
-// ----------------------------------------------------------------------------
-// wxUTF8StringBuffer
-// ----------------------------------------------------------------------------
-
-#if wxUSE_UNICODE_WCHAR
-wxUTF8StringBuffer::~wxUTF8StringBuffer()
-{
-    wxMBConvStrictUTF8 conv;
-    size_t wlen = conv.ToWChar(NULL, 0, m_buf);
-    wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
-
-    wxStringInternalBuffer wbuf(m_str, wlen);
-    conv.ToWChar(wbuf, wlen, m_buf);
-}
-
-wxUTF8StringBufferLength::~wxUTF8StringBufferLength()
-{
-    wxCHECK_RET(m_lenSet, "length not set");
-
-    wxMBConvStrictUTF8 conv;
-    size_t wlen = conv.ToWChar(NULL, 0, m_buf, m_len);
-    wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
-
-    wxStringInternalBufferLength wbuf(m_str, wlen);
-    conv.ToWChar(wbuf, wlen, m_buf, m_len);
-    wbuf.SetLength(wlen);
-}
-#endif // wxUSE_UNICODE_WCHAR