+ const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
+
+ return p == NULL ? npos : p - c_str();
+}
+
+size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
+{
+ wxASSERT( str.GetStringData()->IsValid() );
+ wxASSERT( nStart == npos || nStart <= length() );
+
+ if ( length() >= str.length() )
+ {
+ // avoids a corner case later
+ if ( length() == 0 && str.length() == 0 )
+ return 0;
+
+ // "top" is the point where search starts from
+ size_t top = length() - str.length();
+
+ if ( nStart == npos )
+ nStart = length() - 1;
+ if ( nStart < top )
+ top = nStart;
+
+ const wxChar *cursor = c_str() + top;
+ do
+ {
+ if ( wxTmemcmp(cursor, str.c_str(),
+ str.length()) == 0 )
+ {
+ return cursor - c_str();
+ }
+ } while ( cursor-- > c_str() );
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::rfind(const wxChar* sz, size_t nStart, size_t n) const
+{
+ return rfind(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::rfind(wxChar ch, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length();
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ const wxChar *actual;
+ for ( actual = c_str() + ( nStart == npos ? length() : nStart + 1 );
+ actual > c_str(); --actual )
+ {
+ if ( *(actual - 1) == ch )
+ return (actual - 1) - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart) const
+{
+ wxASSERT(nStart <= length());
+
+ size_t len = wxStrlen(sz);
+
+ size_t i;
+ for(i = nStart; i < this->length(); ++i)
+ {
+ if (wxTmemchr(sz, *(c_str() + i), len))
+ break;
+ }
+
+ if(i == this->length())
+ return npos;
+ else
+ return i;
+}
+
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_first_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= length(),
+ _T("invalid index in find_last_of()") );
+ }
+
+ size_t len = wxStrlen(sz);
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( wxTmemchr(sz, *p, len) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_last_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length();
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ size_t len = wxStrlen(sz);
+
+ size_t i;
+ for(i = nStart; i < this->length(); ++i)
+ {
+ if (!wxTmemchr(sz, *(c_str() + i), len))
+ break;
+ }
+
+ if(i == this->length())
+ return npos;
+ else
+ return i;
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_first_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(wxChar ch, size_t nStart) const
+{
+ wxASSERT( nStart <= length() );
+
+ for ( const wxChar *p = c_str() + nStart; *p; p++ )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ size_t len = wxStrlen(sz);
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( !wxTmemchr(sz, *p,len) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_last_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_last_not_of(wxChar ch, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxChar *sz)
+{
+ wxASSERT_MSG( nStart <= length(),
+ _T("index out of bounds in wxStringBase::replace") );
+ size_t strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+
+ wxStringBase strTmp;
+ strTmp.reserve(length()); // micro optimisation to avoid multiple mem allocs
+
+ //This is kind of inefficient, but its pretty good considering...
+ //we don't want to use character access operators here because on STL
+ //it will freeze the reference count of strTmp, which means a deep copy
+ //at the end when swap is called
+ //
+ //Also, we can't use append with the full character pointer and must
+ //do it manually because this string can contain null characters
+ for(size_t i1 = 0; i1 < nStart; ++i1)
+ strTmp.append(1, this->c_str()[i1]);
+
+ //its safe to do the full version here because
+ //sz must be a normal c string
+ strTmp.append(sz);
+
+ for(size_t i2 = nStart + nLen; i2 < length(); ++i2)
+ strTmp.append(1, this->c_str()[i2]);
+
+ swap(strTmp);
+ return *this;
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ size_t nCount, wxChar ch)
+{
+ return replace(nStart, nLen, wxStringBase(nCount, ch).c_str());
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxStringBase& str,
+ size_t nStart2, size_t nLen2)
+{
+ return replace(nStart, nLen, str.substr(nStart2, nLen2));
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxChar* sz, size_t nCount)
+{
+ return replace(nStart, nLen, wxStringBase(sz, nCount).c_str());
+}
+
+wxStringBase wxStringBase::substr(size_t nStart, size_t nLen) const
+{
+ if ( nLen == npos )
+ nLen = length() - nStart;
+ return wxStringBase(*this, nStart, nLen);
+}
+
+// assigns one string to another
+wxStringBase& wxStringBase::operator=(const wxStringBase& stringSrc)
+{
+ wxASSERT( stringSrc.GetStringData()->IsValid() );
+
+ // don't copy string over itself
+ if ( m_pchData != stringSrc.m_pchData ) {
+ if ( stringSrc.GetStringData()->IsEmpty() ) {
+ Reinit();
+ }
+ else {
+ // adjust references
+ GetStringData()->Unlock();
+ m_pchData = stringSrc.m_pchData;
+ GetStringData()->Lock();
+ }
+ }
+
+ return *this;
+}
+
+// assigns a single character
+wxStringBase& wxStringBase::operator=(wxChar ch)
+{
+ if ( !AssignCopy(1, &ch) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(wxChar)") );
+ }
+ return *this;
+}
+
+// assigns C string
+wxStringBase& wxStringBase::operator=(const wxChar *psz)
+{
+ if ( !AssignCopy(wxStrlen(psz), psz) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(const wxChar *)") );
+ }
+ return *this;
+}
+
+// helper function: does real copy
+bool wxStringBase::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+{
+ if ( nSrcLen == 0 ) {
+ Reinit();
+ }
+ else {
+ if ( !AllocBeforeWrite(nSrcLen) ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
+ GetStringData()->nDataLength = nSrcLen;
+ m_pchData[nSrcLen] = wxT('\0');
+ }
+ return true;
+}
+
+// ---------------------------------------------------------------------------
+// string concatenation
+// ---------------------------------------------------------------------------
+
+// add something to this string
+bool wxStringBase::ConcatSelf(size_t nSrcLen, const wxChar *pszSrcData,
+ size_t nMaxLen)
+{
+ STATISTICS_ADD(SummandLength, nSrcLen);
+
+ nSrcLen = nSrcLen < nMaxLen ? nSrcLen : nMaxLen;
+
+ // concatenating an empty string is a NOP
+ if ( nSrcLen > 0 ) {
+ wxStringData *pData = GetStringData();
+ size_t nLen = pData->nDataLength;
+ size_t nNewLen = nLen + nSrcLen;
+
+ // alloc new buffer if current is too small
+ if ( pData->IsShared() ) {
+ STATISTICS_ADD(ConcatHit, 0);
+
+ // we have to allocate another buffer
+ wxStringData* pOldData = GetStringData();
+ if ( !AllocBuffer(nNewLen) ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
+ pOldData->Unlock();
+ }
+ else if ( nNewLen > pData->nAllocLength ) {
+ STATISTICS_ADD(ConcatHit, 0);
+
+ reserve(nNewLen);
+ // we have to grow the buffer
+ if ( capacity() < nNewLen ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ }
+ else {
+ STATISTICS_ADD(ConcatHit, 1);
+
+ // the buffer is already big enough
+ }
+
+ // should be enough space
+ wxASSERT( nNewLen <= GetStringData()->nAllocLength );
+
+ // fast concatenation - all is done in our buffer
+ memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
+
+ m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
+ GetStringData()->nDataLength = nNewLen; // and fix the length
+ }
+ //else: the string to append was empty
+ return true;
+}
+
+// ---------------------------------------------------------------------------
+// simple sub-string extraction
+// ---------------------------------------------------------------------------
+
+// helper function: clone the data attached to this string
+bool wxStringBase::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+{
+ if ( nCopyLen == 0 ) {
+ dest.Init();
+ }
+ else {
+ if ( !dest.AllocBuffer(nCopyLen) ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
+ }
+ return true;
+}
+
+#endif // !wxUSE_STL
+
+#if !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+#if !wxUSE_STL
+ #define STRINGCLASS wxStringBase
+#else
+ #define STRINGCLASS wxString
+#endif
+
+static inline int wxDoCmp(const wxChar* s1, size_t l1,
+ const wxChar* s2, size_t l2)
+{
+ if( l1 == l2 )
+ return wxTmemcmp(s1, s2, l1);
+ else if( l1 < l2 )
+ {
+ int ret = wxTmemcmp(s1, s2, l1);
+ return ret == 0 ? -1 : ret;
+ }
+ else
+ {
+ int ret = wxTmemcmp(s1, s2, l2);
+ return ret == 0 ? +1 : ret;
+ }
+}
+
+int STRINGCLASS::compare(const wxStringBase& str) const
+{
+ return ::wxDoCmp(data(), length(), str.data(), str.length());
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxStringBase& str) const
+{
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+ return ::wxDoCmp(data() + nStart, nLen, str.data(), str.length());
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxStringBase& str,
+ size_t nStart2, size_t nLen2) const
+{
+ wxASSERT(nStart <= length());
+ wxASSERT(nStart2 <= str.length());
+ size_type strLen = length() - nStart,
+ strLen2 = str.length() - nStart2;
+ nLen = strLen < nLen ? strLen : nLen;
+ nLen2 = strLen2 < nLen2 ? strLen2 : nLen2;
+ return ::wxDoCmp(data() + nStart, nLen, str.data() + nStart2, nLen2);
+}
+
+int STRINGCLASS::compare(const wxChar* sz) const
+{
+ size_t nLen = wxStrlen(sz);
+ return ::wxDoCmp(data(), length(), sz, nLen);
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxChar* sz, size_t nCount) const
+{
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+ if( nCount == npos )
+ nCount = wxStrlen(sz);
+
+ return ::wxDoCmp(data() + nStart, nLen, sz, nCount);
+}
+
+#undef STRINGCLASS
+
+#endif // !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+// ===========================================================================
+// wxString class core
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// construction and conversion
+// ---------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+
+// from multibyte string
+wxString::wxString(const char *psz, const wxMBConv& conv, size_t nLength)
+{
+ // anything to do?
+ if ( psz && nLength != 0 )
+ {
+ if ( nLength == npos )
+ {
+ nLength = wxNO_LEN;
+ }
+
+ size_t nLenWide;
+ wxWCharBuffer wbuf = conv.cMB2WC(psz, nLength, &nLenWide);
+
+ if ( nLenWide )
+ assign(wbuf, nLenWide);
+ }
+}
+
+//Convert wxString in Unicode mode to a multi-byte string
+const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
+{
+ return conv.cWC2MB(c_str(), length() + 1 /* size, not length */, NULL);
+}
+
+#else // ANSI
+
+#if wxUSE_WCHAR_T
+
+// from wide string
+wxString::wxString(const wchar_t *pwz, const wxMBConv& conv, size_t nLength)
+{
+ // anything to do?
+ if ( pwz && nLength != 0 )
+ {
+ if ( nLength == npos )
+ {
+ nLength = wxNO_LEN;
+ }
+
+ size_t nLenMB;
+ wxCharBuffer buf = conv.cWC2MB(pwz, nLength, &nLenMB);
+
+ if ( nLenMB )
+ assign(buf, nLenMB);
+ }
+}
+
+//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(c_str(), length() + 1 /* size, not length */, NULL);
+}
+
+#endif // wxUSE_WCHAR_T
+
+#endif // Unicode/ANSI
+
+// shrink to minimal size (releasing extra memory)
+bool wxString::Shrink()
+{
+ wxString tmp(begin(), end());
+ swap(tmp);
+ return tmp.length() == length();
+}
+
+#if !wxUSE_STL
+// get the pointer to writable buffer of (at least) nLen bytes
+wxChar *wxString::GetWriteBuf(size_t nLen)
+{
+ if ( !AllocBeforeWrite(nLen) ) {
+ // allocation failure handled by caller
+ return NULL;
+ }
+
+ wxASSERT( GetStringData()->nRefs == 1 );
+ GetStringData()->Validate(false);
+
+ return m_pchData;
+}
+
+// put string back in a reasonable state after GetWriteBuf
+void wxString::UngetWriteBuf()
+{
+ GetStringData()->nDataLength = wxStrlen(m_pchData);
+ GetStringData()->Validate(true);
+}
+
+void wxString::UngetWriteBuf(size_t nLen)
+{
+ GetStringData()->nDataLength = nLen;
+ GetStringData()->Validate(true);
+}
+#endif
+
+// ---------------------------------------------------------------------------
+// data access
+// ---------------------------------------------------------------------------
+
+// all functions are inline in string.h
+
+// ---------------------------------------------------------------------------
+// assignment operators
+// ---------------------------------------------------------------------------
+
+#if !wxUSE_UNICODE
+
+// same as 'signed char' variant
+wxString& wxString::operator=(const unsigned char* psz)
+{
+ *this = (const char *)psz;
+ return *this;
+}
+
+#if wxUSE_WCHAR_T
+wxString& wxString::operator=(const wchar_t *pwz)
+{
+ wxString str(pwz);
+ swap(str);
+ return *this;
+}
+#endif
+
+#endif
+
+/*
+ * concatenation functions come in 5 flavours:
+ * string + string
+ * char + string and string + char
+ * C str + string and string + C str
+ */
+
+wxString operator+(const wxString& str1, const wxString& str2)
+{
+#if !wxUSE_STL
+ wxASSERT( str1.GetStringData()->IsValid() );
+ wxASSERT( str2.GetStringData()->IsValid() );
+#endif
+
+ wxString s = str1;
+ s += str2;
+
+ return s;
+}
+
+wxString operator+(const wxString& str, wxChar ch)
+{
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
+
+ wxString s = str;
+ s += ch;
+
+ return s;
+}
+
+wxString operator+(wxChar ch, const wxString& str)
+{
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
+
+ wxString s = ch;
+ s += str;
+
+ return s;
+}
+
+wxString operator+(const wxString& str, const wxChar *psz)
+{
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
+
+ wxString s;
+ if ( !s.Alloc(wxStrlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s += str;
+ s += psz;
+
+ return s;
+}
+
+wxString operator+(const wxChar *psz, const wxString& str)
+{
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
+
+ wxString s;
+ if ( !s.Alloc(wxStrlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s = psz;
+ s += str;
+
+ return s;
+}
+
+// ===========================================================================
+// other common string functions
+// ===========================================================================
+
+int wxString::Cmp(const wxString& s) const
+{
+ return compare(s);
+}
projects / wxWidgets.git / blobdiff