static std::string parseXMLIdentifier(std::streambuf& buffer)
{
std::stringstream identifier;
{
char c=buffer.sgetc();
if((c<'A' || c>'Z') && (c<'a' || c>'z'))
{
throw XMLParseException();
}
buffer.snextc();
identifier<<c;
}
for(;;)
{
char c=buffer.sgetc();
if((c<'0' || c>'9') && (c<'A' || c>'Z') && (c<'a' || c>'z'))
{
break;
}
buffer.snextc();
identifier<<c;
}
return identifier.str();
}
static void parseXMLSkipSpace(std::streambuf& buffer)
{
while(buffer.sgetc()==' ' || buffer.sgetc()=='\n' || buffer.sgetc()=='\r')
{
buffer.snextc();
}
}
XMLNode_SPtr parseXML(std::streambuf& buffer)
{
std::cout<<"Parse Start"<<std::endl;
parseXMLSkipSpace(buffer);
char c=buffer.sgetc();
if(c=='<')
{
buffer.snextc();
std::cout<<"Parse Node"<<std::endl;
XMLNode_SPtr current=parseXMLNode(buffer);
std::cout<<"Something"<<std::endl;
return current;
}
std::cout<<"Nothing"<<std::endl;
return XMLNode_SPtr();
}
static XMLNode_SPtr parseXMLNode(std::streambuf& buffer)
{
// 1. Read Symbol name
parseXMLSkipSpace(buffer);
std::string id=parseXMLIdentifier(buffer);
std::cout<<"Parse Id:"<<id<<std::endl;
std::list<XMLNode_SPtr> children;
std::string text;
parseXMLSkipSpace(buffer);
for(;;)
{
char c=buffer.sgetc();
char c2=buffer.snextc();
if((c=='/') && (c2=='>'))
{
buffer.snextc();
goto completeNode;
}
if(c=='>')
{
goto parseText;
}
// TODO: Parse attribute
}
parseText:
std::cout<<"Parse Text"<<std::endl;
{
std::stringstream textbuffer;
parseXMLSkipSpace(buffer);
for(;;)
{
char c=buffer.sgetc();
char c2=buffer.snextc();
if(c!='<')
{
textbuffer<<c;
}
else
{
if(c2=='/')
{
buffer.snextc();
break;
}
// TODO: There may be other cases.
children.push_back(parseXMLNode(buffer));
}
}
text=textbuffer.str();
}
{
std::string::reverse_iterator trimpos=text.rbegin();
while((trimpos!=text.rend()) && (*trimpos==' ' || *trimpos=='\n' || *trimpos=='\r'))
{
trimpos++;
}
text.erase(trimpos.base(),text.end());
}
std::cout<<"Parse end"<<std::endl;
{
std::string endidentifier=parseXMLIdentifier(buffer);
if(endidentifier!=id)
{
throw XMLParseException();
}
parseXMLSkipSpace(buffer);
char c=buffer.sgetc();
if(c!='>')
{
throw XMLParseException();
}
buffer.snextc();
}
completeNode:
std::cout<<"Complete"<<std::endl;
// Complete...just build and return it.
XMLNode_SPtr node(new XMLNode(id, children, text));
return node;
}