+ return *this;
+}
+
+// truncate the string
+wxString& wxString::Truncate(size_t uiLen)
+{
+ if ( uiLen < length() )
+ {
+ erase(begin() + uiLen, end());
+ }
+ //else: nothing to do, string is already short enough
+
+ return *this;
+}
+
+// ---------------------------------------------------------------------------
+// finding (return wxNOT_FOUND if not found and index otherwise)
+// ---------------------------------------------------------------------------
+
+// find a character
+int wxString::Find(wxChar ch, bool bFromEnd) const
+{
+ size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);
+
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
+}
+
+// find a sub-string (like strstr)
+int wxString::Find(const wxChar *pszSub) const
+{
+ size_type idx = find(pszSub);
+
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
+}
+
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+// the implementation of all the functions below is exactly the same so factor
+// it out
+
+template <typename T, typename F>
+bool wxStringToIntType(const wxChar *start,
+ T *val,
+ int base,
+ F func)
+{
+ wxCHECK_MSG( val, false, _T("NULL output pointer") );
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+#ifndef __WXWINCE__
+ errno = 0;
+#endif
+
+ 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)
+#ifndef __WXWINCE__
+ && (errno != ERANGE)
+#endif
+ ;
+}
+
+bool wxString::ToLong(long *val, int base) const
+{
+ return wxStringToIntType(c_str(), val, base, wxStrtol);
+}
+
+bool wxString::ToULong(unsigned long *val, int base) const
+{
+ return wxStringToIntType(c_str(), val, base, wxStrtoul);
+}
+
+bool wxString::ToLongLong(wxLongLong_t *val, int base) const
+{
+#ifdef wxHAS_STRTOLL
+ return wxStringToIntType(c_str(), val, base, wxStrtoll);
+#else
+ // TODO: implement this ourselves
+ wxUnusedVar(val);
+ wxUnusedVar(base);
+ return false;
+#endif // wxHAS_STRTOLL
+}
+
+bool wxString::ToULongLong(wxULongLong_t *val, int base) const
+{
+#ifdef wxHAS_STRTOLL
+ return wxStringToIntType(c_str(), 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") );
+
+#ifndef __WXWINCE__
+ errno = 0;
+#endif
+
+ 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)
+#ifndef __WXWINCE__
+ && (errno != ERANGE)
+#endif
+ ;
+}
+
+// ---------------------------------------------------------------------------
+// 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);
+
+ int iLen = PrintfV(pszFormat, argptr);
+
+ va_end(argptr);
+
+ return iLen;
+}
+
+int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
+{
+ int size = 1024;
+
+ for ( ;; )
+ {
+ wxStringBuffer tmp(*this, size + 1);
+ wxChar *buf = tmp;
+
+ if ( !buf )
+ {
+ // out of memory
+ return -1;
+ }
+
+ // wxVsnprintf() may modify the original arg pointer, so pass it
+ // only a copy
+ va_list argptrcopy;
+ wxVaCopy(argptrcopy, argptr);
+ int len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
+ va_end(argptrcopy);
+
+ // some implementations of vsnprintf() don't NUL terminate
+ // the string if there is not enough space for it so
+ // always do it manually
+ buf[size] = _T('\0');
+
+ // vsnprintf() may return either -1 (traditional Unix behaviour) or the
+ // total number of characters which would have been written if the
+ // buffer were large enough (newer standards such as Unix98)
+ if ( len < 0 )
+ {
+#if wxUSE_WXVSNPRINTF
+ // we know that our own implementation of wxVsnprintf() returns -1
+ // only for a format error - thus there's something wrong with
+ // the user's format string
+ return -1;
+#else // assume that system version only returns error if not enough space
+ // still not enough, as we don't know how much we need, double the
+ // current size of the buffer
+ size *= 2;
+#endif // wxUSE_WXVSNPRINTF/!wxUSE_WXVSNPRINTF
+ }
+ else if ( len >= size )
+ {
+#if wxUSE_WXVSNPRINTF
+ // 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
+#else
+ // some vsnprintf() implementations NUL-terminate the buffer and
+ // some don't in len == size case, to be safe always add 1
+ size = len + 1;
+#endif
+ }
+ else // ok, there was enough space
+ {
+ break;
+ }
+ }
+
+ // we could have overshot
+ Shrink();
+
+ return length();
+}
+
+// ----------------------------------------------------------------------------
+// misc other operations
+// ----------------------------------------------------------------------------
+
+// returns true if the string matches the pattern which may contain '*' and
+// '?' metacharacters (as usual, '?' matches any character and '*' any number
+// of them)
+bool wxString::Matches(const wxChar *pszMask) const
+{
+ // I disable this code as it doesn't seem to be faster (in fact, it seems
+ // to be much slower) than the old, hand-written code below and using it
+ // here requires always linking with libregex even if the user code doesn't
+ // use it
+#if 0 // wxUSE_REGEX
+ // first translate the shell-like mask into a regex
+ wxString pattern;
+ pattern.reserve(wxStrlen(pszMask));
+
+ pattern += _T('^');
+ while ( *pszMask )
+ {
+ switch ( *pszMask )
+ {
+ case _T('?'):
+ pattern += _T('.');
+ break;
+
+ case _T('*'):
+ pattern += _T(".*");
+ break;
+
+ case _T('^'):
+ case _T('.'):
+ case _T('$'):
+ case _T('('):
+ case _T(')'):
+ case _T('|'):
+ case _T('+'):
+ case _T('\\'):
+ // these characters are special in a RE, quote them
+ // (however note that we don't quote '[' and ']' to allow
+ // using them for Unix shell like matching)
+ pattern += _T('\\');
+ // fall through
+
+ default:
+ pattern += *pszMask;
+ }
+
+ pszMask++;
+ }
+ pattern += _T('$');
+
+ // and now use it
+ return wxRegEx(pattern, wxRE_NOSUB | wxRE_EXTENDED).Matches(c_str());
+#else // !wxUSE_REGEX
+ // TODO: this is, of course, awfully inefficient...
+
+ // the char currently being checked
+ const wxChar *pszTxt = c_str();
+
+ // the last location where '*' matched
+ const wxChar *pszLastStarInText = NULL;
+ const wxChar *pszLastStarInMask = NULL;
+
+match:
+ for ( ; *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
+ switch ( *pszMask ) {
+ case wxT('?'):
+ if ( *pszTxt == wxT('\0') )
+ return false;
+
+ // pszTxt and pszMask will be incremented in the loop statement
+
+ break;
+
+ 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;
+
+ // are there any other metacharacters in the mask?
+ size_t uiLenMask;
+ const wxChar *pEndMask = wxStrpbrk(pszMask, wxT("*?"));
+
+ if ( pEndMask != NULL ) {
+ // we have to match the string between two metachars
+ uiLenMask = pEndMask - pszMask;
+ }
+ else {
+ // we have to match the remainder of the string
+ uiLenMask = wxStrlen(pszMask);
+ }
+
+ wxString strToMatch(pszMask, uiLenMask);
+ const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);
+ if ( pMatch == NULL )
+ return false;
+
+ // -1 to compensate "++" in the loop
+ pszTxt = pMatch + uiLenMask - 1;
+ pszMask += uiLenMask - 1;
+ }
+ break;
+
+ default:
+ if ( *pszMask != *pszTxt )
+ return false;
+ break;
projects / wxWidgets.git / blobdiff