xmlfetch.cpp

贡献一份commoncpp2,有兴趣的可以研究一下

// Copyright (C) 2001 Open Source Telecom Corporation.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software 
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// 
// As a special exception to the GNU General Public License, permission is 
// granted for additional uses of the text contained in its release 
// of Common C++.
// 
// The exception is that, if you link the Common C++ library with other
// files to produce an executable, this does not by itself cause the
// resulting executable to be covered by the GNU General Public License.
// Your use of that executable is in no way restricted on account of
// linking the Common C++ library code into it.
//
// This exception does not however invalidate any other reasons why
// the executable file might be covered by the GNU General Public License.
//
// This exception applies only to the code released under the 
// name Common C++.  If you copy code from other releases into a copy of
// Common C++, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
// 
// If you write modifications of your own for Common C++, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.

#include <cc++/common.h>
#include <iostream>
#include <cstdlib>

#ifdef	CCXX_NAMESPACES
using namespace std;
using namespace ost;
#endif

class myXMLParser : public URLStream, public XMLStream
{
private:
	void httpHeader(const char *header, const char *value)
	{
		cout << "HEADER " << header << "=" << value << endl;
	}	

	int read(unsigned char *buffer, size_t len)
	{
		URLStream::read((char *)buffer, len);
		len = gcount();
		return len;
	}

	void startDocument(void)
	{
		cout << "START DOCUMENT" << endl;
	}

	void endDocument(void)
	{
		cout << "END DOCUMENT" << endl;
	}

	void characters(const unsigned char *text, size_t len)
	{
		cout << "CHARS=";
		while(len--)
			cout << *(text++);
		cout << endl;
	}

	void comment(const char *text)
	{
		cout << "COMMENT=" << text << endl;
	}

	void startElement(const unsigned char *name, const unsigned char **attr)
	{
		cout << "<" << name;
		if(attr)
		{
			while(*attr)
			{
				cout << " " << *(attr++);
				cout << "=" << *(attr++);
			}
		}
		cout << ">" << endl;
	}

	void endElement(const unsigned char *name)
	{
		cout << "</" << name << ">" << endl;
	}
public:
	void Close(void)
	{
		URLStream::close();
	}
};

int main(int argc, char **argv)
{
	myXMLParser xml;
	URLStream::Error status;

//	url.setProxy("home.sys", 8000);
#ifdef	CCXX_EXCEPTIONS
	try
	{
#endif
		while(--argc)
		{
			++argv;
			cout << "fetching " << *argv << endl;
			status = xml.get(*argv);
			if(status)
			{
				cout << "failed; reason=" << status << endl;
				xml.Close();
				continue;
			}
			cout << "Parsing..." << endl;
			if(!xml.parse())
				cout << "not well formed..." << endl;
			xml.Close();
			cout << ends;
		}
#ifdef	CCXX_EXCEPTIONS
	}
	catch(...)
	{
		cerr << "url " << *argv << " failed" << endl;
	}
#endif
}