Newsgroup.h

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#ifndef __Newsgroup_h__
#define __Newsgroup_h__

#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/file.h>
#include <unistd.h>
#include <utime.h>
#include <errno.h>
#include <time.h>
#include <fcntl.h>
#include <stdlib.h>
#include <limits.h>

#include <iostream>
#include <fstream>
#include <string>

#include "config.h"
#include "Debug.h"
#include "OverviewFmt.h"

// A NNTP-command must not exceed 512 characters including the
// trailing \r\n. 512 chars is a good approx for the max length
// of a newsgroup
#define MAXGROUPNAMELEN 512
#define MAXNEWSGROUPNAMELEN MAXGROUPNAMELEN

class Newsgroup {
      protected:
        char _NewsgroupName[MAXGROUPNAMELEN + 1];
        OverviewFmt *_OverviewFormat;
        virtual Article *retrievearticle(unsigned int nbr) {
                return NULL;
      } public:
         Newsgroup(OverviewFmt * fmt, const char *name) {
                _OverviewFormat = fmt;
                _NewsgroupName[MAXGROUPNAMELEN] = '\0';
                strncpy(_NewsgroupName, name, MAXGROUPNAMELEN);
                ASSERT(if (strlen(name) > MAXGROUPNAMELEN) {
                       slog.
                       p(Logger::
                         Error) <<
                       "Name of newsgroup too long - truncated\n";}
                );
        }
        virtual ~ Newsgroup();

        void setoverviewfmt(OverviewFmt * fmt) {
                _OverviewFormat = fmt;
        }
        OverviewFmt *getoverviewfmt() {
                return _OverviewFormat;
        }

#ifdef ENABLE_ASSERTIONS
        virtual void testdb(void) {
        }
#endif
        const char *name(void) {
                return _NewsgroupName;
        }
        virtual void getsize(unsigned int *f, unsigned int *l) = 0;
        virtual void setsize(unsigned int f, unsigned int l) = 0;
        virtual unsigned int firstnbr() = 0;
        virtual unsigned int lastnbr() = 0;
        virtual int hasrecord(unsigned int i) = 0;
//   virtual void hasrecords(unsigned int *rlist)=0;

        virtual Article *getarticle(unsigned int nbr) = 0;
        virtual void freearticle(Article * artp) = 0;
        virtual void setarticle(Article * art) = 0;
        virtual void printarticle(std::ostream & os, unsigned int nbr) = 0;
        virtual void prefetchGroup(int lockgrp = 1) = 0;
        virtual void prefetchOverview(void) = 0;

        virtual const char *getover(unsigned int nbr) = 0;
        virtual void setover(const string & over) = 0;
        virtual void printover(std::ostream & os, unsigned int nbr) {
                const char *o = getover(nbr);
                if (o)
                        os << o << "\r\n";
        }
        virtual void readoverdb(std::istream & is) = 0;
        virtual void printoverdb(std::ostream & os, unsigned int f =
                                 0, unsigned int l = UINT_MAX) {
                unsigned int i, ol;
                const char *o;
                getsize(&i, &ol);
                if (f > i)
                        i = f;
                if (l > ol)
                        l = ol;
                while (i <= l) {
                        if ((o = getover(i++)) != NULL)
                                os << o << "\r\n";
                }
        }
        virtual void printheaderdb(std::ostream & os,
                                   const char *header,
                                   unsigned int f = 0, unsigned int l =
                                   UINT_MAX) = 0;
        virtual void printlistgroup(std::ostream & os) = 0;
};

#ifdef _INCLUDE_NewsgroupIter_
class NewsgroupIter {
      protected:
        Newsgroup * _ng;
        unsigned int i;
        int lck;
      public:
         NewsgroupIter() {
        } NewsgroupIter(Newsgroup * ng) {
                _ng = ng;
        }
        void attach(Newsgroup * ng) {
                _ng = ng;
        }
        void first() {
                i++;
        }
        void next() {
                i--;
        }
        void set(unsigned int j) {
                i = j;
        }

        Article *article() {
                return _ng->getarticle(i);
        }
        OverviewRecord *overview() {
                return _ng->getarticle(i);
        }
};
#endif
#endif

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