/////////////////////////////////////////////////////////////////////////////
// Name: string.cpp
// Purpose: wxString class
-// Author: Vadim Zeitlin
+// Author: Vadim Zeitlin, Ryan Norton
// Modified by:
// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
+// (c) 2004 Ryan Norton <wxprojects@comcast.net>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// wxString class core
// ===========================================================================
-// ---------------------------------------------------------------------------
-// common conversion routines
-// ---------------------------------------------------------------------------
-
-size_t wxString::WorstEncodingCase(size_t len, const 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
-
// ---------------------------------------------------------------------------
// construction and conversion
// ---------------------------------------------------------------------------
nLen = 0;
}
+
// anything to do?
if ( (nLen != 0) && (nLen != (size_t)-1) )
{
- //When converting mb->wc it never inflates to more characters than the length
- wxStringBufferLength internalBuffer(*this, nLen + 1);
+ //Convert string
+ size_t nRealSize;
+ wxWCharBuffer theBuffer = conv.cMB2WC(psz, nLen, &nRealSize);
- //Do the actual conversion & Set the length of the buffer
- internalBuffer.SetLength(
- wxWcstr(internalBuffer, psz, nLen, conv)
- );
+ //Copy
+ if (nRealSize)
+ assign( theBuffer.data() , nRealSize - 1 );
}
}
//Convert wxString in Unicode mode to a multi-byte string
const wxCharBuffer wxString::mb_str(wxMBConv& conv) const
{
- //Create the buffer
- wxCharBuffer buffer( wxString::WorstEncodingCase(length(), conv) + 1);
-
- //Do the actual conversion (will return a blank string on error)
- wxMbstr(buffer.data(), (*this).c_str(), length(), conv);
-
- return buffer;
+ size_t dwOutSize;
+ return conv.cWC2MB(c_str(), length(), &dwOutSize);
}
#else // ANSI
// anything to do?
if ( (nLen != 0) && (nLen != (size_t)-1) )
{
- //Create a wxStringBufferLength which will access the internal
- //C char pointer in non-stl mode
- wxStringBufferLength internalBuffer(*this, wxString::WorstEncodingCase(nLen, conv) + 1);
+ //Convert string
+ size_t nRealSize;
+ wxCharBuffer theBuffer = conv.cWC2MB(pwz, nLen, &nRealSize);
- //Do the actual conversion & Set the length of the buffer
- internalBuffer.SetLength(
- wxMbstr(internalBuffer, pwz, nLen, conv)
- );
+ //Copy
+ if (nRealSize)
+ assign( theBuffer.data() , nRealSize - 1 );
}
}
//mode is not enabled and wxUSE_WCHAR_T is enabled
const wxWCharBuffer wxString::wc_str(wxMBConv& conv) const
{
- //mb->wc never inflates to more than the length
- wxWCharBuffer buffer(length() + 1);
-
- //Do the actual conversion (will return a blank string on error)
- wxWcstr(buffer.data(), (*this).c_str(), length(), conv);
-
- return buffer;
+ size_t dwOutSize;
+ return conv.cMB2WC(c_str(), length(), &dwOutSize);
}
#endif // wxUSE_WCHAR_T
if(wxTolower(s1[i]) != wxTolower(s2[i]))
break;
}
- return i == l1 ? 0 : s1[i] < s2[i] ? -1 : 1;
+ return i == l1 ? 0 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
}
else if( l1 < l2 )
{
if(wxTolower(s1[i]) != wxTolower(s2[i]))
break;
}
- return i == l1 ? -1 : s1[i] < s2[i] ? -1 : 1;
+ return i == l1 ? -1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
}
else if( l1 > l2 )
{
if(wxTolower(s1[i]) != wxTolower(s2[i]))
break;
}
- return i == l2 ? 1 : s1[i] < s2[i] ? -1 : 1;
+ return i == l2 ? 1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
}
wxFAIL; // must never get there
// this will allocate enough space for the terminating NUL too
wxCharBuffer buffer(length());
- signed char *dest = (signed char *)buffer.data();
+
+ char *dest = buffer.data();
const wchar_t *pwc = c_str();
for ( ;; )
{
- *dest++ = *pwc > SCHAR_MAX ? wxT('_') : *pwc;
+ *dest++ = (char)(*pwc > SCHAR_MAX ? wxT('_') : *pwc);
// the output string can't have embedded NULs anyhow, so we can safely
// stop at first of them even if we do have any
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