1 | /**********************************************************************
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2 | *
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3 | * historydb.cpp --
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4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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5 | *
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6 | * A component of the Greenstone digital library software
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7 | * from the New Zealand Digital Library Project at the
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8 | * University of Waikato, New Zealand.
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9 | *
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10 | * This program is free software; you can redistribute it and/or modify
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11 | * it under the terms of the GNU General Public License as published by
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12 | * the Free Software Foundation; either version 2 of the License, or
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13 | * (at your option) any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | *
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24 | *********************************************************************/
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25 |
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26 | #include "historydb.h"
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27 | #include "fileutil.h"
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28 | #include "cgiutils.h"
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29 | #include "recptproto.h"
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30 | #include "OIDtools.h"
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31 |
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32 | #define MAX_RECORDS 20
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33 |
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34 | // returns true on success (in which case historyinfo will contain
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35 | // the information for this history)
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36 | bool get_history_info (const text_t &userid, text_tarray &historyinfo,
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37 | const text_t &gsdlhome, ostream &logout) {
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38 |
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39 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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40 |
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41 | bool result = false;
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42 | // open the history database
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43 | gdbmclass historydb;
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44 |
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45 | if (historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) {
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46 | // get history list
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47 | text_t historyresult;
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48 |
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49 | historydb.getkeydata(userid, historyresult);
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50 |
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51 | if (historyresult != "") { // there are entries, process them
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52 |
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53 | splitchar(historyresult.begin(), historyresult.end(), '\n', historyinfo);
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54 | result = true;
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55 | }
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56 | historydb.closedatabase();
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57 |
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58 | } else {
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59 | outconvertclass text_t2ascii;
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60 | logout << text_t2ascii << "couldn't open history database " << historyfile << "\n";
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61 | }
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62 | return result;
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63 | }
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64 |
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65 |
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66 | // returns true on success
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67 | // changed to only save 20 records per user, numbers not included
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68 | // only save if there are already entries there, or if display=true
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69 | bool set_history_info (const text_t &userid, const text_t &history, const text_t &gsdlhome, bool display) {
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70 |
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71 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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72 |
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73 | bool result = false;
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74 | // open the history database
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75 | gdbmclass historydb;
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76 |
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77 | text_t oldhistoryresult;
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78 | text_t newhistoryresult;
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79 | int numentries=0;
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80 |
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81 | if ( !historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) {
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82 | // not created yet
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83 | oldhistoryresult="";
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84 | if (!display) return true; // dont need to save
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85 | }
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86 | else {
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87 |
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88 | // get history list
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89 | if (! historydb.getkeydata(userid, oldhistoryresult)) {
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90 | oldhistoryresult="";
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91 | if (!display) return true; // dont need to save
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92 | }
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93 | historydb.closedatabase();
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94 | }
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95 |
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96 | text_tarray entries;
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97 |
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98 | if (oldhistoryresult!="") {
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99 | splitchar(oldhistoryresult.begin(), oldhistoryresult.end(), '\n', entries);
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100 | numentries = entries.size();
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101 | if (numentries >= MAX_RECORDS) numentries = MAX_RECORDS-1;
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102 | }
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103 |
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104 | // open for writing
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105 | if (!historydb.opendatabase(historyfile, GDBM_WRCREAT, 1000, true)) return false;
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106 |
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107 | // add on new linethe new record to the front of the list, then add the
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108 | // appropriate entries from the old stuff
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109 | newhistoryresult += history;
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110 | newhistoryresult += "\n";
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111 | for (int i=0; i<numentries;i++) {
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112 | newhistoryresult += entries[i]+"\n";
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113 | }
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114 |
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115 | if (historydb.setinfo(userid, newhistoryresult))
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116 | result=true;
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117 |
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118 | historydb.closedatabase();
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119 | return result;
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120 | }
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121 |
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122 | // deletes all a users history
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123 | bool delete_all_history_info (const text_t &userid, const text_t &gsdlhome) {
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124 |
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125 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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126 |
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127 | // open the history database
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128 | gdbmclass historydb;
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129 |
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130 | if ( !historydb.opendatabase(historyfile, GDBM_WRITER, 1000, true)) return false;
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131 |
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132 | historydb.deletekey(userid);
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133 | historydb.closedatabase();
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134 | return true;
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135 |
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136 | }
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137 |
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138 | // retrieves the value of one of the arguments
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139 | void parse_saved_args(text_t &args, text_t key, text_t &value)
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140 | {
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141 | text_t::iterator here = args.begin();
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142 | text_t::iterator end = args.end();
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143 | text_t::iterator it;
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144 | while (here != end) {
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145 | if(*here==key[0]) {
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146 | it=findchar(here, end, '=');
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147 | if (it==end) {
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148 | value=""; return;
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149 | }
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150 | text_t entry = substr(here, it);
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151 | if (entry==key) {
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152 | here=it+1;
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153 | it=findchar(here, end, '&');
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154 | value = substr(here, it);
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155 | return;
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156 | }
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157 | }
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158 | here++;
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159 | }// while
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160 | }
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161 |
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162 | // retrieves the value of all of the arguments
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163 | void parse_saved_args(text_t &args, infodbclass &info)
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164 | {
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165 | text_t::iterator here = args.begin();
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166 | text_t::iterator end = args.end();
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167 | text_t::iterator it;
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168 | text_tarray values;
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169 |
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170 | splitchar(here, end, '&', values);
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171 |
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172 | text_tarray::iterator start = values.begin();
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173 | text_tarray::iterator stop = values.end();
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174 |
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175 | text_t key;
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176 | text_t value;
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177 | while(start!=stop) {
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178 |
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179 | here=(*start).begin();
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180 | end=(*start).end();
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181 | it=findchar(here, end, '=');
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182 | if (it!=end) {
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183 | key = substr(here, it);
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184 | value = substr(it+1, end);
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185 |
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186 | info[key]=value;
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187 | }
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188 | start++;
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189 | }
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190 | }
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191 |
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192 |
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193 | void split_saved_query(text_t &query, text_t &numdocs, text_t &cgiargs)
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194 | {
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195 | text_t::iterator begin = query.begin();
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196 | text_t::iterator end = query.end();
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197 |
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198 | while (*begin >='0'&& *begin <='9') { // get the digits for numdocs
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199 | numdocs.push_back(*begin);
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200 | begin++;
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201 | }
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202 |
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203 | if (*begin == '+') { // get the + if there
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204 | numdocs.push_back(*begin);
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205 | begin++;
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206 | }
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207 | if (*begin == ':') { // have the old format - previous bit was record number
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208 | numdocs.clear();
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209 | begin++;
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210 |
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211 | while(*begin >='0' && *begin <='9') { // get the digits
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212 | numdocs.push_back(*begin);
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213 | begin++;
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214 | }
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215 | if (*begin == '+') { // get the + if there
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216 | numdocs.push_back(*begin);
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217 | begin++;
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218 | }
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219 | }
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220 | cgiargs += (substr(begin, end)); // put rest of query into cgiargs
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221 |
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222 | }
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223 |
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224 | void format_user_info (text_t &historyargs, text_t &userinfo,
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225 | cgiargsclass &args,
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226 | recptprotolistclass *protos, ostream &logout)
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227 | {
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228 | text_tset metadata;
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229 | userinfo.clear();
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230 |
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231 | infodbclass argsinfo;
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232 | parse_saved_args(historyargs, argsinfo);
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233 |
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234 | text_t collect = argsinfo["c"];
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235 | if (collect=="") {
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236 | userinfo="";
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237 | return;
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238 | }
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239 |
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240 | if (collect != args["c"]) {
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241 | userinfo += collect+", ";
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242 | }
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243 |
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244 | if (argsinfo["h"] != args["h"]) {
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245 |
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246 | recptproto *collectproto = protos->getrecptproto(collect,logout);
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247 | if (collectproto == NULL) {
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248 | userinfo="";
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249 | return;
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250 | }
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251 | metadata.insert(argsinfo["h"]);
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252 | FilterResponse_t response;
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253 |
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254 | get_info("collection", collect, metadata, false, collectproto, response, logout);
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255 | text_t index = response.docInfo[0].metadata[argsinfo["h"]].values[0];
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256 | if (!index.empty()) {
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257 | userinfo += index+", ";
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258 | }
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259 | }
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260 |
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261 | if (argsinfo["b"] != args["b"] || argsinfo["t"] != args["t"]) {
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262 | text_t mode;
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263 | if (argsinfo["b"]=="0") { // simple mode
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264 | if (argsinfo["t"]=="0") {
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265 | mode = " _texthallwords_";
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266 | }
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267 | else { // t=1
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268 | mode = " _texthsomewords_";
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269 | }
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270 |
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271 | }
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272 | else { // advanced mode
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273 | if (argsinfo["t"]=="0") {
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274 | mode = " _texthboolean_";
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275 | }
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276 | else {
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277 | mode = " _texthranked_";
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278 | }
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279 | }
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280 | userinfo += mode+", ";
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281 | }
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282 |
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283 | if (argsinfo["k"] != args["k"]) {
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284 | text_t options;
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285 | if (argsinfo["k"]=="0") {
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286 | options = " _texthcaseoff_";
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287 | }
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288 | else {
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289 | options = " _texthcaseon_";
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290 | }
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291 | userinfo += options+", ";
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292 | }
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293 |
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294 | if (argsinfo["s"] != args["s"]) {
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295 | text_t stem;
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296 | if (argsinfo["s"]=="0") {
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297 | stem = " _texthstemoff_";
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298 | }
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299 | else {
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300 | stem = " _texthstemon_";
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301 | }
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302 | userinfo += stem+", ";
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303 | }
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304 |
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305 | }
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