void TiXmlDocumentA::StreamIn( TIXMLA_ISTREAM * in, TIXMLA_STRING * tag )
{
// The basic issue with a document is that we don't know what we're
// streaming. Read something presumed to be a tag (and hope), then
// identify it, and call the appropriate stream method on the tag.
//
// This "pre-streaming" will never read the closing ">" so the
// sub-tag can orient itself.
if ( !StreamTo( in, '<', tag ) )
{
SetError( TIXMLA_ERROR_PARSING_EMPTY, 0, 0 );
return;
}
while ( in->good() )
{
int tagIndex = tag->length();
while ( in->good() && in->peek() != '>' )
{
int c = in->get();
(*tag) += (char) c;
}
if ( in->good() )
{
// We now have something we presume to be a node of
// some sort. Identify it, and call the node to
// continue streaming.
TiXmlNodeA* node = Identify( tag->c_str() + tagIndex );
if ( node )
{
node->StreamIn( in, tag );
bool isElement = node->ToElement() != 0;
delete node;
node = 0;
// If this is the root element, we're done. Parsing will be
// done by the >> operator.
if ( isElement )
{
return;
}
}
else
{
SetError( TIXMLA_ERROR, 0, 0 );
return;
}
}
}
// We should have returned sooner.
SetError( TIXMLA_ERROR, 0, 0 );
}
void TiXmlElementA::StreamIn (TIXMLA_ISTREAM * in, TIXMLA_STRING * tag)
{
// We're called with some amount of pre-parsing. That is, some of "this"
// element is in "tag". Go ahead and stream to the closing ">"
while( in->good() )
{
int c = in->get();
(*tag) += (char) c ;
if ( c == '>' )
break;
}
if ( tag->length() < 3 ) return;
// Okay...if we are a "/>" tag, then we're done. We've read a complete tag.
// If not, identify and stream.
if ( tag->at( tag->length() - 1 ) == '>'
&& tag->at( tag->length() - 2 ) == '/' )
{
// All good!
return;
}
else if ( tag->at( tag->length() - 1 ) == '>' )
{
// There is more. Could be:
// text
// closing tag
// another node.
for ( ;; )
{
StreamWhiteSpace( in, tag );
// Do we have text?
if ( in->good() && in->peek() != '<' )
{
// Yep, text.
TiXmlTextA text( "" );
text.StreamIn( in, tag );
// What follows text is a closing tag or another node.
// Go around again and figure it out.
continue;
}
// We now have either a closing tag...or another node.
// We should be at a "<", regardless.
if ( !in->good() ) return;
assert( in->peek() == '<' );
int tagIndex = tag->length();
bool closingTag = false;
bool firstCharFound = false;
for( ;; )
{
if ( !in->good() )
return;
int c = in->peek();
if ( c == '>' )
break;
*tag += (char)c;
in->get();
if ( !firstCharFound && c != '<' && !IsWhiteSpace( c ) )
{
firstCharFound = true;
if ( c == '/' )
closingTag = true;
}
}
// If it was a closing tag, then read in the closing '>' to clean up the input stream.
// If it was not, the streaming will be done by the tag.
if ( closingTag )
{
int c = in->get();
assert( c == '>' );
*tag += (char)c;
// We are done, once we've found our closing tag.
return;
}
else
{
// If not a closing tag, id it, and stream.
const char* tagloc = tag->c_str() + tagIndex;
TiXmlNodeA* node = Identify( tagloc );
if ( !node )
return;
node->StreamIn( in, tag );
delete node;
node = 0;
// No return: go around from the beginning: text, closing tag, or node.
}
}
}
}