-// ---------------------------------------------------------------------------
-// common conversion routines
-// ---------------------------------------------------------------------------
-
-size_t wxString::WorstEncodingCase(size_t len, wxMBConv& WXUNUSED(conv))
-{
- //Worst case for UTF7
- return len * 5;
-}
-
-#if wxUSE_WCHAR_T
-
-//Convert a wide character string of a specified length
-//to a multi-byte character string, ignoring intermittent null characters
-//returns the actual length of the string
-inline size_t wxMbstr(char* szBuffer, const wchar_t* szString,
- size_t nStringLen, wxMBConv& conv)
-{
- const wchar_t* szEnd = szString + nStringLen + 1;
- const wchar_t* szPos = szString;
- const wchar_t* szStart = szPos;
-
- size_t nActualLength = 0;
-
- //Convert the string until the length() is reached, continuing the
- //loop every time a null character is reached
- while(szPos != szEnd)
- {
- wxASSERT(szPos < szEnd); //something is _really_ screwed up if this rings true
-
- //Get the length of the current (sub)string
- size_t nLen = conv.WC2MB(NULL, szPos, 0);
-
- //Invalid conversion?
- if( nLen == (size_t)-1 )
- {
- szBuffer[0] = '\0';
- return 0;
- }
-
- //Increase the actual length (+1 for current null character)
- nActualLength += nLen + 1;
-
- //If this is true it means buffer overflow
- wxASSERT( nActualLength <= wxString::WorstEncodingCase(nStringLen, conv) + 1 );
-
- //Convert the current (sub)string
- if(conv.WC2MB(&szBuffer[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
- {
- //error - return empty buffer
- wxFAIL_MSG(wxT("Error converting wide-character string to a multi-byte string"));
- szBuffer[0] = '\0';
- return 0;
- }
-
- //Increment to next (sub)string
- //Note that we have to use wxWcslen here instead of nLen
- //here because XX2XX gives us the size of the output buffer,
- //not neccessarly the length of the string
- szPos += wxWcslen(szPos) + 1;
- }
-
- return nActualLength - 1; //success - return actual length
-}
-
-//Convert a multi-byte character string of a specified length
-//to a wide character string, ignoring intermittent null characters
-//returns the actual length
-inline size_t wxWcstr( wchar_t* szBuffer, const char* szString,
- size_t nStringLen, wxMBConv& conv)
-{
- const char* szEnd = szString + nStringLen + 1;
- const char* szPos = szString;
- const char* szStart = szPos;
-
- size_t nActualLength = 0;
-
- //Convert the string until the length() is reached, continuing the
- //loop every time a null character is reached
- while(szPos != szEnd)
- {
- wxASSERT(szPos < szEnd); //something is _really_ screwed up if this rings true
-
- //Get the length of the current (sub)string
- size_t nLen = conv.MB2WC(NULL, szPos, 0);
-
- //Invalid conversion?
- if( nLen == (size_t)-1 )
- {
- szBuffer[0] = '\0';
- return 0;
- }
-
- //Increase the actual length (+1 for current null character)
- nActualLength += nLen + 1;
-
- //If this is true it means buffer overflow
- wxASSERT(nActualLength <= nStringLen + 1);
-
- //Convert the current (sub)string
- if ( conv.MB2WC(&szBuffer[szPos - szStart], szPos, nLen + 1) == (size_t)-1 )
- {
- //error - return empty buffer
- wxFAIL_MSG(wxT("Error converting multi-byte string to a wide-character string"));
- szBuffer[0] = '\0';
- return 0;
- }
-
- //Increment to next (sub)string
- //Note that we have to use strlen here instead of nLen
- //here because XX2XX gives us the size of the output buffer,
- //not neccessarly the length of the string
- szPos += strlen(szPos) + 1;
- }
-
- return nActualLength - 1; //success - return actual length
-}
-
-#endif //wxUSE_WCHAR_T
-
projects / wxWidgets.git / blobdiff