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#include "xmlreader.h"
Bu::XmlReader::XmlReader( Bu::Stream &sIn ) :
sIn( sIn )
{
}
Bu::XmlReader::~XmlReader()
{
}
const char *Bu::XmlReader::lookahead( int nAmnt )
{
if( sBuf.getSize() >= nAmnt )
return sBuf.getStr();
int nNew = nAmnt - sBuf.getSize();
char *buf = new char[nNew];
sIn.read( buf, nNew );
sBuf.append( buf );
return sBuf.getStr();
}
void Bu::XmlReader::burn( int nAmnt )
{
if( sBuf.getSize() < nAmnt )
{
lookahead( nAmnt );
}
sBuf.remove( nAmnt );
}
void Bu::XmlNode::checkString( const char *str, int nLen )
{
if( !strncmp( str, lookahead( nLen ), nLen ) )
{
burn( nLen );
return;
}
throw Bu::ExceptionBase("Expected string '%s'", str );
}
Bu::XmlNode *Bu::XmlReader::read()
{
prolog();
}
void Bu::XmlReader::prolog()
{
XMLDecl();
Misc();
}
void Bu::XmlReader::XMLDecl()
{
checkString("<?xml", 5 );
VersionInfo();
EncodingDecl();
SDDecl();
S();
}
void Bu::XmlReader::Misc()
{
}
void Bu::XmlReader::S()
{
for( int j = 0;; j++ )
{
char c = *lookahead( 1 );
if( c == 0x20 || c == 0x9 || c == 0xD || c == 0xA )
continue;
if( j == 0 )
printf("Error, expected whitespace!\n");
return;
}
}
void Bu::XmlReader::S()
{
for(;;)
{
char c = *lookahead( 1 );
if( c == 0x20 || c == 0x9 || c == 0xD || c == 0xA )
continue;
return;
}
}
void Bu::XmlReader::VersionInfo()
{
S();
checkString("version", 7 );
}
void Bu::XmlReader::Eq()
{
Sq();
checkString("=", 1 );
Sq();
}
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