source: tags/gsdl-2_70u-distribution/gsdl/src/recpt/historydb.cpp@ 11745

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1/**********************************************************************
2 *
3 * historydb.cpp --
4 * Copyright (C) 1999 The New Zealand Digital Library Project
5 *
6 * A component of the Greenstone digital library software
7 * from the New Zealand Digital Library Project at the
8 * University of Waikato, New Zealand.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 *********************************************************************/
25
26#include "historydb.h"
27#include "fileutil.h"
28#include "cgiutils.h"
29#include "recptproto.h"
30#include "OIDtools.h"
31
32#define MAX_RECORDS 20
33#define HIST_SEP ';'
34
35// returns true on success (in which case historyinfo will contain
36// the information for this history)
37bool get_history_info (const text_t &userid, text_tarray &historyinfo,
38 const text_t &gsdlhome, ostream &logout) {
39
40 text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
41
42 bool result = false;
43 // open the history database
44 gdbmclass historydb;
45
46 if (historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) {
47 // get history list
48 text_t historyresult;
49
50 historydb.getkeydata(userid, historyresult);
51
52 if (historyresult != "") { // there are entries, process them
53
54 splitchar(historyresult.begin(), historyresult.end(), '\n', historyinfo);
55 result = true;
56 }
57 historydb.closedatabase();
58
59 } else {
60 outconvertclass text_t2ascii;
61 logout << text_t2ascii << "couldn't open history database " << historyfile << "\n";
62 }
63 return result;
64}
65
66
67// returns true on success
68// changed to only save 20 records per user, numbers not included
69// only save if there are already entries there, or if display=true
70bool set_history_info (const text_t &userid, const text_t &history, const text_t &gsdlhome, bool display) {
71
72 text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
73
74 bool result = false;
75 // open the history database
76 gdbmclass historydb;
77
78 text_t oldhistoryresult;
79 text_t newhistoryresult;
80 int numentries=0;
81
82 if ( !historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) {
83 // not created yet
84 oldhistoryresult="";
85 if (!display) return true; // dont need to save
86 }
87 else {
88
89 // get history list
90 if (! historydb.getkeydata(userid, oldhistoryresult)) {
91 oldhistoryresult="";
92 if (!display) return true; // dont need to save
93 }
94 historydb.closedatabase();
95 }
96
97 text_tarray entries;
98
99 if (oldhistoryresult!="") {
100 splitchar(oldhistoryresult.begin(), oldhistoryresult.end(), '\n', entries);
101 numentries = entries.size();
102 if (numentries >= MAX_RECORDS) numentries = MAX_RECORDS-1;
103 }
104
105 // open for writing
106 if (!historydb.opendatabase(historyfile, GDBM_WRCREAT, 1000, true)) return false;
107
108 // add on new linethe new record to the front of the list, then add the
109 // appropriate entries from the old stuff
110 newhistoryresult += history;
111 newhistoryresult += "\n";
112 for (int i=0; i<numentries;++i) {
113 newhistoryresult += entries[i]+"\n";
114 }
115
116 if (historydb.setinfo(userid, newhistoryresult))
117 result=true;
118
119 historydb.closedatabase();
120 return result;
121}
122
123// deletes all a users history
124bool delete_all_history_info (const text_t &userid, const text_t &gsdlhome) {
125
126 text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
127
128 // open the history database
129 gdbmclass historydb;
130
131 if ( !historydb.opendatabase(historyfile, GDBM_WRITER, 1000, true)) return false;
132
133 historydb.deletekey(userid);
134 historydb.closedatabase();
135 return true;
136
137}
138
139// retrieves the value of one of the arguments
140void parse_saved_args(text_t &args, text_t key, text_t &value)
141{
142 text_t::iterator here = args.begin();
143 text_t::iterator end = args.end();
144 text_t::iterator it;
145 while (here != end) {
146 if(*here==key[0]) {
147 it=findchar(here, end, '=');
148 if (it==end) {
149 value=""; return;
150 }
151 text_t entry = substr(here, it);
152 if (entry==key) {
153 here=it+1;
154 it=findchar(here, end, HIST_SEP);
155 value = substr(here, it);
156 return;
157 }
158 }
159 ++here;
160 }// while
161}
162
163// retrieves the value of all of the arguments
164void parse_saved_args(text_t &args, infodbclass &info)
165{
166 text_t::iterator here = args.begin();
167 text_t::iterator end = args.end();
168 text_t::iterator it;
169 text_tarray values;
170
171 splitchar(here, end, HIST_SEP, values);
172
173 text_tarray::iterator start = values.begin();
174 text_tarray::iterator stop = values.end();
175
176 text_t key;
177 text_t value;
178 while(start!=stop) {
179
180 here=(*start).begin();
181 end=(*start).end();
182 it=findchar(here, end, '=');
183 if (it!=end) {
184 key = substr(here, it);
185 value = substr(it+1, end);
186
187 info[key]=value;
188 }
189 ++start;
190 }
191}
192
193
194void split_saved_query(text_t &query, text_t &numdocs, text_t &cgiargs)
195{
196 text_t::iterator begin = query.begin();
197 text_t::iterator end = query.end();
198
199 while (*begin >='0'&& *begin <='9') { // get the digits for numdocs
200 numdocs.push_back(*begin);
201 ++begin;
202 }
203
204 if (*begin == '+') { // get the + if there
205 numdocs.push_back(*begin);
206 ++begin;
207 }
208 if (*begin == ':') { // have the old format - previous bit was record number
209 numdocs.clear();
210 ++begin;
211
212 while(*begin >='0' && *begin <='9') { // get the digits
213 numdocs.push_back(*begin);
214 ++begin;
215 }
216 if (*begin == '+') { // get the + if there
217 numdocs.push_back(*begin);
218 ++begin;
219 }
220 }
221 cgiargs += (substr(begin, end)); // put rest of query into cgiargs
222
223}
224
225void format_user_info (text_t &historyargs, text_t &userinfo,
226 cgiargsclass &args,
227 recptprotolistclass *protos, ostream &logout)
228{
229 text_tset metadata;
230 userinfo.clear();
231
232 infodbclass argsinfo;
233 parse_saved_args(historyargs, argsinfo);
234 text_t collect = argsinfo["c"];
235 if (collect=="") {
236 userinfo="";
237 return;
238 }
239
240 if (collect != args["c"]) {
241 userinfo += collect+", ";
242 }
243
244 if (argsinfo["h"] != args["h"]) {
245
246 recptproto *collectproto = protos->getrecptproto(collect,logout);
247 if (collectproto == NULL) {
248 userinfo="";
249 return;
250 }
251 metadata.insert(argsinfo["h"]);
252 FilterResponse_t response;
253
254 get_info("collection", collect, args["l"], metadata, false, collectproto, response, logout);
255 text_t index = response.docInfo[0].metadata[argsinfo["h"]].values[0];
256 if (!index.empty()) {
257 userinfo += index+", ";
258 }
259 }
260
261 if (argsinfo["b"] != args["b"] || argsinfo["t"] != args["t"]) {
262 if (argsinfo["b"]=="0") { // simple mode
263 if (argsinfo["t"]=="0") {
264 userinfo += " _texthallwords_, ";
265 }
266 else if (argsinfo["t"]=="1"){
267 userinfo += " _texthsomewords_, ";
268 }
269
270 }
271 else if (argsinfo["b"] == "1") { // advanced mode
272 if (argsinfo["t"]=="0") {
273 userinfo += " _texthboolean_, ";
274 }
275 else if (argsinfo["t"]=="1") {
276 userinfo += " _texthranked_, ";
277 }
278 }
279 }
280
281 if (argsinfo["k"] != "" && argsinfo["k"] != args["k"]) {
282 text_t options;
283 // the text translations are the wrong way round
284 if (argsinfo["k"]=="1") {
285 userinfo += " _texthcaseoff_, ";
286 }
287 else if (argsinfo["k"]=="0") {
288 userinfo += " _texthcaseon_, ";
289 }
290 }
291
292 if (argsinfo["s"] != "" && argsinfo["s"] != args["s"]) {
293 if (argsinfo["s"]=="0") {
294 userinfo += " _texthstemoff_, ";
295 }
296 else if (argsinfo["s"]=="1") {
297 userinfo += " _texthstemon_, ";
298 }
299 }
300
301}
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