source: trunk/gsdl/src/recpt/historydb.h@ 1282

/**********************************************************************
 *
 * historydb.h -- 
 * Copyright (C) 1999  The New Zealand Digital Library Project
 *
 * A component of the Greenstone digital library software
 * from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: historydb.h 1000 2000-03-01 22:23:47Z sjboddie $
 *
 *********************************************************************/


#ifndef HISTORYDB_H
#define HISTORYDB_H

#include "infodbclass.h"
#include "text_t.h"
#include "recptproto.h"

struct HistRecord {
  text_t entry;
  bool save;
};

struct ltinttext_t
{
  bool operator()(const text_t &t1, const text_t &t2) const
  { return t1.getint() < t2.getint(); }
};


typedef map<text_t, HistRecord, ltinttext_t> HistRecordmap;

// returns true on success (in which case historyinfo will contain
// the information for this history)
bool get_history_info (const text_t &userid, text_tarray &historyinfo, 
               const text_t &gsdlhome, ostream &logout);

// returns true on success
bool set_history_info (const text_t &userid, const text_t &historyinfo, 
               const text_t &gsdlhome);

bool delete_all_history_info (const text_t &userid, const text_t &gsdlhome);

// deletes only the entries specified
bool delete_history_info(const text_t &userid, const text_t &deletemode,
             const text_t &selection, const text_t &gsdlhome);

// takes a text_t with x-y, and retrieves the x and y params
bool get_selection_params (text_t &data, int &start, int &stop);

bool expand_query(HistRecord &query, HistRecordmap &records);

// combine query looks for #x and replaces it with the query
// string from the xth entry. THe first one looks up the xth
// query in the database (used before running a query), the 
// second version looks it up inthe records map (used in
// delete history -are doing a lotof #x replacing at once.
bool combine_query(text_t &userid, text_t &query, const text_t &gsdlhome);
bool combine_query(text_t &userid, HistRecordmap  &records);

// retrieves the value of an arg (key) from a list of cgi args
// in the form a=q&b=1&...
void parse_saved_args(text_t &args, text_t key, text_t &value);

// extracts out the components of an entry in the database
// currently:
// querynum:numdocs cgiargs
void split_saved_query(text_t &query, text_t &querynum, text_t &numdocs, text_t &cgiargs);

// just extracts the query number out of the entry
void get_query_num(text_t &query, text_t &querynum);

// takes the cgiarg string, and outputs it in some form useful
// to the user
void format_user_info (text_t &cgiargs, text_t &info, 
               recptprotolistclass *protos, ostream &logout);

#endif