- 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);
+ 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);
- if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
- wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
- }
+ if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
+ }
- 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';
+ 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';
- while(p - c_str() + str.length() <= length() &&
- wxTmemcmp(p, str.c_str(), str.length()) )
- {
- //Previosly passed as the first argument to wxTmemchr,
- //but C/C++ standard does not specify evaluation order
- //of arguments to functions -
- //http://embedded.com/showArticle.jhtml?articleID=9900607
- ++p;
-
- //anchor again
- p = (const wxChar*)wxTmemchr(p,
- str.c_str()[0],
- length() - (p - c_str()));
-
- if(!p)
- return npos;
- }
+ while(p - c_str() + str.length() <= length() &&
+ wxTmemcmp(p, str.c_str(), str.length()) )
+ {
+ //Previosly passed as the first argument to wxTmemchr,
+ //but C/C++ standard does not specify evaluation order
+ //of arguments to functions -
+ //http://embedded.com/showArticle.jhtml?articleID=9900607
+ ++p;
+
+ //anchor again
+ p = (const wxChar*)wxTmemchr(p,
+ str.c_str()[0],
+ length() - (p - c_str()));
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
- // 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;
+ }
- wxString dest(*this, nFirst, nCount);
- if ( dest.length() != nCount ) {
- wxFAIL_MSG( _T("out of memory in wxString::Mid") );
- }
+ wxString dest(*this, nFirst, nCount);
+ if ( dest.length() != nCount )
+ {
+ wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+ }
// vsnprintf() may return either -1 (traditional Unix behaviour) or the
// total number of characters which would have been written if the
// vsnprintf() may return either -1 (traditional Unix behaviour) or the
// total number of characters which would have been written if the
- // ok, there was enough space
- break;
+ // still not enough, as we don't know how much we need, double the
+ // current size of the buffer
+ size *= 2;
-
-#ifdef EOVERFLOW
- // if the error is not due to not having enough space (it could be e.g.
- // EILSEQ), break too -- we'd just eat all available memory uselessly
- if ( errno != EOVERFLOW )
+ else if ( len > size )
+ {
+ size = len;
+ }
+ else // ok, there was enough space