// returns true if clipboard turns out to be XML
bool IsClipboardXML (void)
{
CString strContents;
if (!GetClipboardContents (strContents, false, false))
return false;
// see if base64 encoded
SeeIfBase64 (strContents);
CMemFile f ((unsigned char *) (const char *) strContents, strContents.GetLength ());
CArchive ar (&f, CArchive::load);
if (IsArchiveXML (ar))
return true;
return false;
} // end of IsClipboardXML
void CXMLparser::BuildStructure (CFile * file)
{
m_xmlLength = file->GetLength ();
// can hardly be XML if empty file
if (m_xmlLength == 0)
ThrowErrorException ("Zero length XML file \"%s\"",
(LPCTSTR) file->GetFilePath ());
// sanity check - don't read 20 Mb files into memory
if (m_xmlLength > MAX_XML_DOCUMENT_SIZE)
ThrowErrorException ("XML file \"%s\"too large - maximum permitted is %i bytes",
(LPCTSTR) file->GetFilePath (),
MAX_XML_DOCUMENT_SIZE);
char * p = m_strxmlBuffer.GetBuffer (m_xmlLength + 1);
iLineLastItemFound = 0;
if (file->Read (p, m_xmlLength) != m_xmlLength)
{
m_strxmlBuffer.ReleaseBuffer (0);
ThrowErrorException ("Could not read XML file");
}
m_strxmlBuffer.ReleaseBuffer (m_xmlLength);
// look for Unicode (FF FE)
if ((unsigned char) m_strxmlBuffer [0] == 0xFF &&
(unsigned char) m_strxmlBuffer [1] == 0xFE)
{
CString buf2;
const char * q = m_strxmlBuffer;
q += 2; // skip indicator bytes
// find required buffer length
int length = WideCharToMultiByte (CP_UTF8, 0, (LPCWSTR) q, (m_xmlLength - 2) / 2,
NULL, 0, NULL, NULL);
// make a new string with enough length to hold it
char * p = buf2.GetBuffer (length);
// convert it
WideCharToMultiByte (CP_UTF8, 0, (LPCWSTR) q, (m_xmlLength - 2) / 2,
p, length, NULL, NULL);
buf2.ReleaseBuffer (length);
// copy to our buffer
m_strxmlBuffer = buf2;
}
else
// look for UTF-8 indicator bytes (EF BB BF)
if ((unsigned char) m_strxmlBuffer [0] == 0xEF &&
(unsigned char) m_strxmlBuffer [1] == 0xBB &&
(unsigned char) m_strxmlBuffer [2] == 0xBF)
m_strxmlBuffer = m_strxmlBuffer.Mid (3); // skip them
// convert tabs to spaces, we don't want tabs in our data
m_strxmlBuffer.Replace ('\t', ' ');
SeeIfBase64 (m_strxmlBuffer);
m_xmlBuff = m_strxmlBuffer; // get const char * pointer to buffer
ProcessNode (m_xmlRoot); // process root node
} // end of CXMLparser::BuildStructure
