forced redraw before scrolling

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

diff --git a/src/common/string.cpp b/src/common/string.cpp
index fd6ee0a7800b51fd2a2db3283c402c8b2480705f..c8a3bf6694b558f31015ecf6ecfc230befe29026 100644 (file)
--- a/src/common/string.cpp
+++ b/src/common/string.cpp
@@ -86,10 +86,10 @@ static const struct
 } g_strEmpty = { {-1, 0, 0}, wxT('\0') };
 
 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 } g_strEmpty = { {-1, 0, 0}, wxT('\0') };
 
 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400

-// must define this static for VA or else you get multiply defined symbols everywhere
+// must define this static for VA or else you get multiply defined symbols
+// everywhere

 const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;
 const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;

-
-#endif
+#endif // Visual Age

 
 // empty C style string: points to 'string data' byte of g_strEmpty
 extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
 
 // empty C style string: points to 'string data' byte of g_strEmpty
 extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;


@@ -113,9 +113,11 @@ extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
 //       function wxVsnprintfA (A for ANSI), should also find one for Unicode
 //       strings in Unicode build
 #ifdef __WXMSW__
 //       function wxVsnprintfA (A for ANSI), should also find one for Unicode
 //       strings in Unicode build
 #ifdef __WXMSW__

-    #if (defined(__VISUALC__) || defined(wxUSE_NORLANDER_HEADERS)) && !defined(__MINGW32__)
+    #if defined(__VISUALC__) || (defined(__MINGW32__) && wxUSE_NORLANDER_HEADERS)

         #define wxVsnprintfA     _vsnprintf
     #endif
         #define wxVsnprintfA     _vsnprintf
     #endif

+#elif defined(__WXMAC__)
+    #define wxVsnprintfA       vsnprintf

 #else   // !Windows
     #ifdef HAVE_VSNPRINTF
         #define wxVsnprintfA       vsnprintf
 #else   // !Windows
     #ifdef HAVE_VSNPRINTF
         #define wxVsnprintfA       vsnprintf


@@ -130,9 +132,7 @@ extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
 
     #if defined(__VISUALC__)
         #pragma message("Using sprintf() because no snprintf()-like function defined")
 
     #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__)
+    #elif defined(__GNUG__)

         #warning "Using sprintf() because no snprintf()-like function defined"
     #endif //compiler
 #endif // no vsnprintf
         #warning "Using sprintf() because no snprintf()-like function defined"
     #endif //compiler
 #endif // no vsnprintf


@@ -153,7 +153,7 @@ extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
 //
 // ATTN: you can _not_ use both of these in the same program!
 
 //
 // ATTN: you can _not_ use both of these in the same program!
 

-istream& operator>>(istream& is, wxString& WXUNUSED(str))
+wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))

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


@@ -184,7 +184,7 @@ istream& operator>>(istream& is, wxString& WXUNUSED(str))
   return is;
 }
 
   return is;
 }
 

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

 {
   os << str.c_str();
   return os;
 {
   os << str.c_str();
   return os;


@@ -201,7 +201,8 @@ extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
     int iLen = s.PrintfV(format, argptr);
     if ( iLen != -1 )
     {
     int iLen = s.PrintfV(format, argptr);
     if ( iLen != -1 )
     {

-        wxStrncpy(buf, s.c_str(), iLen);
+        wxStrncpy(buf, s.c_str(), len);
+        buf[len-1] = wxT('\0');

     }
 
     return iLen;
     }
 
     return iLen;


@@ -290,10 +291,12 @@ void wxString::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
 {
   Init();
 
 {
   Init();
 

-  wxASSERT( nPos <= wxStrlen(psz) );
+  // if the length is not given, assume the string to be NUL terminated
+  if ( nLength == wxSTRING_MAXLEN ) {
+    wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );

 
 

-  if ( nLength == wxSTRING_MAXLEN )

     nLength = wxStrlen(psz + nPos);
     nLength = wxStrlen(psz + nPos);

+  }

 
   STATISTICS_ADD(InitialLength, nLength);
 
 
   STATISTICS_ADD(InitialLength, nLength);
 


@@ -341,15 +344,15 @@ wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
 
 #if wxUSE_WCHAR_T
 // from wide string
 
 #if wxUSE_WCHAR_T
 // from wide string

-wxString::wxString(const wchar_t *pwz)
+wxString::wxString(const wchar_t *pwz, wxMBConv& conv)

 {
   // first get necessary size
 {
   // first get necessary size

-  size_t nLen = pwz ? wxWC2MB((char *) NULL, pwz, 0) : 0;
+  size_t nLen = pwz ? conv.WC2MB((char *) NULL, pwz, 0) : 0;

 
   // empty?
   if ( (nLen != 0) && (nLen != (size_t)-1) ) {
     AllocBuffer(nLen);
 
   // empty?
   if ( (nLen != 0) && (nLen != (size_t)-1) ) {
     AllocBuffer(nLen);

-    wxWC2MB(m_pchData, pwz, nLen);
+    conv.WC2MB(m_pchData, pwz, nLen);

   }
   else {
     Init();
   }
   else {
     Init();


@@ -528,6 +531,12 @@ void wxString::UngetWriteBuf()
   GetStringData()->Validate(TRUE);
 }
 
   GetStringData()->Validate(TRUE);
 }
 

+void wxString::UngetWriteBuf(size_t nLen)
+{
+  GetStringData()->nDataLength = nLen;
+  GetStringData()->Validate(TRUE);
+}
+

 // ---------------------------------------------------------------------------
 // data access
 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------
 // data access
 // ---------------------------------------------------------------------------


@@ -768,6 +777,35 @@ wxString wxString::Mid(size_t nFirst, size_t nCount) const
   return dest;
 }
 
   return dest;
 }
 

+// check that the tring 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;
+}
+

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


@@ -904,6 +942,8 @@ bool wxString::IsWord() const
 bool wxString::IsNumber() const
 {
   const wxChar *s = (const wxChar*) *this;
 bool wxString::IsNumber() const
 {
   const wxChar *s = (const wxChar*) *this;

+  if (wxStrlen(s))
+     if ((s[0] == '-') || (s[0] == '+')) s++;

   while(*s){
     if(!wxIsdigit(*s)) return(FALSE);
     s++;
   while(*s){
     if(!wxIsdigit(*s)) return(FALSE);
     s++;


@@ -947,14 +987,22 @@ wxString& wxString::MakeLower()
 // trimming and padding
 // ---------------------------------------------------------------------------
 
 // trimming and padding
 // ---------------------------------------------------------------------------
 

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

 // trims spaces (in the sense of isspace) from left or right side
 wxString& wxString::Trim(bool bFromRight)
 {
   // first check if we're going to modify the string at all
   if ( !IsEmpty() &&
        (
 // 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)))
+        (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
+        (!bFromRight && wxSafeIsspace(GetChar(0u)))

        )
      )
   {
        )
      )
   {


@@ -965,7 +1013,7 @@ wxString& wxString::Trim(bool bFromRight)
     {
       // find last non-space character
       wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
     {
       // find last non-space character
       wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;

-      while ( wxIsspace(*psz) && (psz >= m_pchData) )
+      while ( wxSafeIsspace(*psz) && (psz >= m_pchData) )

         psz--;
 
       // truncate at trailing space start
         psz--;
 
       // truncate at trailing space start


@@ -976,7 +1024,7 @@ wxString& wxString::Trim(bool bFromRight)
     {
       // find first non-space character
       const wxChar *psz = m_pchData;
     {
       // find first non-space character
       const wxChar *psz = m_pchData;

-      while ( wxIsspace(*psz) )
+      while ( wxSafeIsspace(*psz) )

         psz++;
 
       // fix up data and length
         psz++;
 
       // fix up data and length


@@ -1104,7 +1152,7 @@ wxString wxString::Format(const wxChar *pszFormat, ...)
 wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
 {
     wxString s;
 wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
 {
     wxString s;

-    s.Printf(pszFormat, argptr);
+    s.PrintfV(pszFormat, argptr);

     return s;
 }
 
     return s;
 }
 


@@ -1363,7 +1411,7 @@ int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
 
   // NB: wxVsnprintf() may return either less than the buffer size or -1 if
   //     there is not enough place depending on implementation
 
   // 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);
+  int iLen = wxVsnprintfA(szScratch, WXSIZEOF(szScratch), (char *)pszFormat, argptr);

   if ( iLen != -1 ) {
     // the whole string is in szScratch
     *this = szScratch;
   if ( iLen != -1 ) {
     // the whole string is in szScratch
     *this = szScratch;


@@ -1497,8 +1545,34 @@ int wxString::sprintf(const wxChar *pszFormat, ...)
 // ---------------------------------------------------------------------------
 // standard C++ library string functions
 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------
 // standard C++ library string functions
 // ---------------------------------------------------------------------------

+

 #ifdef  wxSTD_STRING_COMPATIBILITY
 
 #ifdef  wxSTD_STRING_COMPATIBILITY
 

+void wxString::resize(size_t nSize, wxChar ch)
+{
+    size_t len = length();
+
+    if ( nSize < len )
+    {
+        Truncate(nSize);
+    }
+    else if ( nSize > len )
+    {
+        *this += wxString(ch, len - nSize);
+    }
+    //else: we have exactly the specified length, nothing to do
+}
+
+void wxString::swap(wxString& str)
+{
+    // this is slightly less efficient than fiddling with m_pchData directly,
+    // but it is still quite efficient as we don't copy the string here because
+    // ref count always stays positive
+    wxString tmp = str;
+    str = *this;
+    *this = str;
+}
+

 wxString& wxString::insert(size_t nPos, const wxString& str)
 {
   wxASSERT( str.GetStringData()->IsValid() );
 wxString& wxString::insert(size_t nPos, const wxString& str)
 {
   wxASSERT( str.GetStringData()->IsValid() );


@@ -1707,13 +1781,15 @@ wxString& wxString::erase(size_t nStart, size_t nLen)
 
 wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
 {
 
 wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
 {

-  wxASSERT( nStart + nLen <= wxStrlen(sz) );
+  wxASSERT_MSG( nStart + nLen <= Len(),
+                _T("index out of bounds in wxString::replace") );

 
   wxString strTmp;
 
   wxString strTmp;

+  strTmp.Alloc(Len());      // micro optimisation to avoid multiple mem allocs
+

   if ( nStart != 0 )
     strTmp.append(c_str(), nStart);
   if ( nStart != 0 )
     strTmp.append(c_str(), nStart);

-  strTmp += sz;
-  strTmp.append(c_str() + nStart + nLen);
+  strTmp << sz << c_str() + nStart + nLen;

 
   *this = strTmp;
   return *this;
 
   *this = strTmp;
   return *this;


@@ -1794,8 +1870,14 @@ void wxArrayString::Copy(const wxArrayString& src)
 void wxArrayString::Grow()
 {
   // only do it if no more place
 void wxArrayString::Grow()
 {
   // only do it if no more place

-  if( m_nCount == m_nSize ) {
-    if( m_nSize == 0 ) {
+  if ( m_nCount == m_nSize ) {
+    // 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;
       m_pItems = new wxChar *[m_nSize];
       // was empty, alloc some memory
       m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
       m_pItems = new wxChar *[m_nSize];


@@ -1803,13 +1885,6 @@ void wxArrayString::Grow()
     else {
       // otherwise when it's called for the first time, nIncrement would be 0
       // and the array would never be expanded
     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
                           ? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
       // add 50% but not too much
       size_t nIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
                           ? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;


@@ -2087,6 +2162,9 @@ void wxArrayString::Sort(CompareFunction compareFunction)
 
   DoSort();
 
 
   DoSort();
 

+  // reset it to NULL so that Sort(bool) will work the next time
+  gs_compareFunction = NULL;
+

   END_SORT();
 }
 
   END_SORT();
 }
 


@@ -2111,3 +2189,17 @@ void wxArrayString::DoSort()
   qsort(m_pItems, m_nCount, sizeof(wxChar *), wxStringCompareFunction);
 }
 
   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;
+}
+