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 |
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33 | // returns true on success (in which case historyinfo will contain
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34 | // the information for this history)
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35 | bool get_history_info (const text_t &userid, text_tarray &historyinfo,
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36 | const text_t &gsdlhome, ostream &logout) {
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37 |
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38 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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39 |
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40 | bool result = false;
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41 | // open the history database
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42 | gdbmclass historydb;
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43 |
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44 | if (historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) {
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45 | // get history list
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46 | text_t historyresult;
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47 |
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48 | historydb.getkeydata(userid, historyresult);
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49 |
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50 | if (historyresult != "") { // there are entries, process them
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51 |
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52 | splitchar(historyresult.begin(), historyresult.end(), '\n', historyinfo);
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53 | result = true;
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54 | }
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55 | historydb.closedatabase();
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56 |
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57 | } else {
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58 | outconvertclass text_t2ascii;
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59 | logout << text_t2ascii << "couldn't open history database " << historyfile << "\n";
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60 | }
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61 | return result;
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62 | }
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63 |
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64 |
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65 | // returns true on success
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66 | bool set_history_info (const text_t &userid, const text_t &history, const text_t &gsdlhome) {
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67 |
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68 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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69 |
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70 | bool result = false;
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71 | // open the history database
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72 | gdbmclass historydb;
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73 |
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74 | text_t querynum;
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75 | text_t historyresult;
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76 |
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77 |
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78 | if ( !historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) {
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79 | // not created yet
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80 | historyresult="";
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81 | querynum="1";
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82 | }
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83 | else {
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84 |
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85 | // get history list
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86 | if (! historydb.getkeydata(userid, historyresult)) {
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87 | historyresult="";
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88 | querynum="1";
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89 | }
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90 | historydb.closedatabase();
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91 | }
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92 |
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93 | // get next query num
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94 | if (historyresult!="") {
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95 | text_tarray entries;
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96 | splitchar(historyresult.begin(), historyresult.end(), '\n', entries);
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97 | get_query_num(entries.back(), querynum);
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98 | querynum.setint(querynum.getint()+1);
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99 | }
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100 |
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101 | // open for writing
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102 | if (!historydb.opendatabase(historyfile, GDBM_WRCREAT, 1000, true)) return false;
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103 |
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104 | // add on new line
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105 | historyresult += querynum;
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106 | historyresult += ":";
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107 | historyresult += history;
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108 | historyresult += "\n";
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109 |
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110 | if (historydb.setinfo(userid, historyresult))
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111 | result=true;
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112 |
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113 | historydb.closedatabase();
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114 | return result;
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115 | }
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116 |
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117 | // deletes all a users history
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118 | bool delete_all_history_info (const text_t &userid, const text_t &gsdlhome) {
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119 |
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120 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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121 |
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122 | // open the history database
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123 | gdbmclass historydb;
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124 |
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125 | if ( !historydb.opendatabase(historyfile, GDBM_WRITER, 1000, true)) return false;
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126 |
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127 | historydb.deletekey(userid);
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128 | historydb.closedatabase();
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129 | return true;
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130 |
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131 | }
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132 |
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133 | //deletes only the selected records
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134 | bool delete_history_info (const text_t &userid, const text_t &deletemode,
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135 | const text_t &selection, const text_t &gsdlhome) {
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136 |
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137 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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138 | bool result = false;
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139 | // open the history database
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140 | gdbmclass historydb;
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141 |
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142 | if ( !historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) return false;
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143 |
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144 | // get history list
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145 | text_t historyresult;
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146 |
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147 | if (! historydb.getkeydata(userid, historyresult)) return false;
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148 |
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149 | historydb.closedatabase();
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150 |
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151 | text_t newhistory; // for the new list of search history
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152 | // get list of queries
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153 | text_tarray queries;
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154 | splitchar(historyresult.begin(), historyresult.end(), '\n', queries);
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155 | text_tarray::iterator begin=queries.begin();
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156 | text_tarray::iterator end=queries.end();
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157 |
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158 | // get list of numbers to delete
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159 | text_tarray numbers;
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160 | splitchar(selection.begin(), selection.end(), ',', numbers);
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161 | text_tarray::iterator numbegin=numbers.begin();
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162 | text_tarray::iterator numend=numbers.end();
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163 |
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164 | bool tdefault, tset;
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165 | if (deletemode=="delete") {
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166 | tdefault=true;
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167 | tset=false;
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168 | }
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169 | else {// deletemode == save
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170 | tdefault=false;
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171 | tset=true;
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172 | }
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173 |
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174 | // create a HistRecord map of all the entries
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175 | HistRecordmap records;
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176 | while (begin != end) {
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177 | HistRecord rec;
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178 | rec.entry=*begin;
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179 | rec.save=tdefault;
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180 | text_t num;
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181 | get_query_num(*begin, num);
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182 | records[num] = rec;
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183 | begin++;
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184 | }
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185 |
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186 |
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187 | // now set the save field for all records that are selected
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188 | while(numbegin != numend) {
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189 |
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190 | if (is_number(*numbegin)) {
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191 | if (records.count(*numbegin)==1) {
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192 | records[*numbegin].save=tset;
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193 | } // else invalid number
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194 | }
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195 | else{
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196 | int start, stop;
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197 | if (get_selection_params(*numbegin, start, stop)) {
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198 | for (int i=start; i<=stop; i++) {
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199 | text_t num = i;
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200 | if (records.count(num)==1) {
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201 | records[num].save=tset;
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202 | }
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203 | }
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204 | }
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205 | else { // dodgy format
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206 | // error message
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207 | }
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208 |
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209 | }
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210 | numbegin++;
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211 | } // while
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212 |
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213 | HistRecordmap::iterator recbegin = records.begin();
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214 | HistRecordmap::iterator recend = records.end();
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215 |
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216 | //create new history record - go through all Records
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217 | // and add to new history those with save set to true
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218 | while (recbegin != recend) {
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219 | if ((*recbegin).second.save) {
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220 | expand_query((*recbegin).second, records);
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221 | newhistory += (*recbegin).second.entry + "\n";
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222 | }
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223 | recbegin++;
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224 | }
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225 |
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226 | // open for writing
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227 | if (!historydb.opendatabase(historyfile, GDBM_WRITER, 1000, true)) return false;
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228 |
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229 | if (historydb.setinfo(userid, newhistory)) result = true;
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230 |
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231 | historydb.closedatabase();
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232 | return result;
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233 | }
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234 |
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235 | bool get_selection_params (text_t &data, int &start, int &stop) {
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236 |
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237 | text_tarray results;
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238 |
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239 | splitchar(data.begin(), data.end(), '-', results);
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240 | if (results.size()==2 && is_number(results[0]) && is_number(results[1])) {
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241 | start=results[0].getint();
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242 | stop=results[1].getint();
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243 | return true;
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244 | }
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245 |
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246 | // error message
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247 | return false;
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248 | }
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249 |
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250 | // expand query takes a HistRecord, and expands out any hashes in
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251 | // the query string for queries that aren't to be saved
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252 | bool expand_query(HistRecord &record, HistRecordmap &records) {
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253 |
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254 | text_tarray args;
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255 | splitchar(record.entry.begin(), record.entry.end(), '&', args);
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256 |
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257 | text_tarray::iterator begin=args.begin();
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258 | text_tarray::iterator end=args.end();
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259 |
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260 | text_t query;
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261 | // find the q argument
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262 | while(begin != end) {
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263 | if ((*begin)[0] == 'q'&& (*begin)[1] == '=') {
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264 | query=*begin;
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265 | args.erase(begin);
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266 | break;
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267 | } else begin++;
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268 | }
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269 | if (query !="") {
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270 |
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271 | //remove the q=
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272 | text_t::iterator front = query.begin();
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273 | query.erase(front);
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274 | front=query.begin();
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275 |
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276 | query.erase(front);
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277 | decode_cgi_arg(query);
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278 | // now have just the query string
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279 | // check any refs in it to see if they are still valid
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280 | combine_query(query, records);
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281 | text_t formattedquery = cgi_safe(query);
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282 | text_t newquery = "q=";
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283 | newquery += formattedquery;
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284 |
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285 | args.push_back(newquery);
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286 | joinchar(args, '&', record.entry);
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287 |
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288 | return true;
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289 | }
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290 | return false;
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291 | }
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292 |
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293 | // replaces a reference to a previous query with the search
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294 | // string from that query
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295 | bool combine_query(text_t &userid, text_t &query, const text_t &gsdlhome)
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296 | {
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297 | text_t::iterator begin = query.begin();
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298 | text_t::iterator end = query.end();
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299 | text_t::iterator it = findchar(begin, end, '#');
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300 | if (it==end) return true; // no need to swap anything
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301 |
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302 | bool result=true;
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303 | text_t queryresult = "";
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304 | text_t historyfile = filename_cat(gsdlhome, "etc", "history.db");
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305 | text_t historyresult;
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306 | // open the history database
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307 | gdbmclass historydb;
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308 | bool exists = false;
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309 | if (historydb.opendatabase(historyfile, GDBM_READER, 1000, true)) {
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310 | // get history list
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311 | if (historydb.getkeydata(userid, historyresult)) {
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312 | exists=true;
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313 |
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314 | historydb.closedatabase();
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315 | }
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316 | }
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317 | if (!exists) {// cant open history file, or user entry doesn't exist. replace #x with blanks
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318 | while(it !=end) {
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319 | queryresult += substr(begin, it);
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320 | it++;
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321 | if (*it<'0' || *it>'9') {
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322 | queryresult.push_back('#'); // put the hash back if its not next to a number
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323 | }
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324 | else {
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325 | while(*it>='0'&&*it<='9') it++;
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326 | result = false;
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327 | }
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328 | begin=it;
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329 | it=findchar(begin, end, '#');
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330 | }
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331 | queryresult += substr(begin, end);
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332 | query = queryresult;
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333 | return result;
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334 | }
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335 |
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336 | // if have got to here, have a previous history in historyresult
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337 | text_tarray historyinfo;
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338 | splitchar(historyresult.begin(), historyresult.end(), '\n', historyinfo);
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339 | text_tarray::iterator histbegin = historyinfo.begin();
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340 | text_tarray::iterator histend = historyinfo.end();
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341 |
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342 | text_tmap historymap;
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343 | // put all entries into a map, so can pull out the appropriate one easily
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344 | while (histbegin != histend) {
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345 | text_t num;
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346 | get_query_num(*histbegin, num);
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347 | historymap[num]=*histbegin;
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348 | histbegin++;
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349 | }
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350 | while(it!=end) { // while there still is a hash present
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351 | text_t querynum;
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352 | text_t newquery;
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353 |
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354 | while (begin!=end) {
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355 | if (*begin==text_t('#')) {
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356 | begin++;
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357 | if(*begin<'0'||*begin>'9') { // not a history ref, leave in
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358 | queryresult.push_back('#');
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359 | }
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360 | else { // history ref
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361 | while(begin !=end && *begin>='0'&&*begin<='9') {
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362 | querynum.push_back(*begin);
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363 | begin++;
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364 | }
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365 | text_t oldquery = historymap[querynum];
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366 | if (oldquery !="") { // valid entry
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367 | parse_saved_args(oldquery, "q", newquery);
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368 | decode_cgi_arg(newquery);
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369 | queryresult += newquery;
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370 | }
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371 | else {
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372 | result=false; // have replaced #n with nothing
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373 | }
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374 | querynum.clear();
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375 | }
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376 | } // if #
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377 | else {
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378 | queryresult.push_back(*begin);
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379 | begin++;
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380 | }
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381 | } // while begin!=end
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382 |
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383 | // have got to end of query string,
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384 | // now go back and check for internal #
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385 | query = queryresult;
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386 | begin = query.begin();
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387 | end = query.end();
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388 | it = findchar(begin, end, '#');
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389 | queryresult.clear();
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390 |
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391 | } // while it !=end
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392 |
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393 |
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394 | return result;
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395 |
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396 | } // combine query
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397 |
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398 |
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399 | // replaces a reference to a previous query with the search
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400 | // string from that query, uses the Histrecordmap rather than the GDBM file
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401 | bool combine_query( text_t &query, HistRecordmap &records)
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402 | {
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403 | text_t::iterator begin = query.begin();
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404 | text_t::iterator end = query.end();
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405 | text_t::iterator it = findchar(begin, end, '#');
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406 | if (it==end) return true; // no need to swap anything
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407 |
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408 | text_t queryresult = "";
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409 | bool changed=true;
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410 | while(it!=end && changed) { // while there still is a hash present
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411 | // and query has changed since last time round
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412 | // we are leaving some #X in
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413 | text_t querynum;
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414 | text_t newquery;
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415 | changed=false;
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416 | while (begin!=end) { // go through the query looking for hash
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417 | if (*begin==text_t('#')) {
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418 | begin++;
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419 | if ( *begin<'0' || *begin>'9') { // not a ref
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420 | queryresult.push_back('#');
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421 | }
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422 | else {
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423 | while(begin !=end && *begin>='0'&&*begin<='9') {
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424 | querynum.push_back(*begin);
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425 | begin++;
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426 | }
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427 | if(records.count(querynum)>0) { // valid entry
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428 | if (!records[querynum].save){ // referenced record to be deleted
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429 | // get the q arg out of referenced query
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430 | parse_saved_args(records[querynum].entry, "q", newquery);
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431 | decode_cgi_arg(newquery);
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432 | queryresult += newquery;
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433 | changed=true;
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434 | }
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435 | else { // leave the #x in
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436 | queryresult.push_back('#');
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437 | queryresult += querynum;
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438 | }
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439 | }// else do nothing (replace #x with nothing)
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440 | querynum.clear();
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441 | newquery.clear();
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442 | }
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443 | } // if its a hash
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444 | else {
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445 | queryresult.push_back(*begin);
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446 | begin++;
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447 | }
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448 | } // while begin!=end
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449 |
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450 | // have got to end of query string,
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451 | // now go back and check for internal #
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452 | query = queryresult;
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453 | begin = query.begin();
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454 | end = query.end();
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455 | it = findchar(begin, end, '#');
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456 | queryresult.clear();
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457 |
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458 | } // while it !=end
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459 |
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460 | return true;
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461 | } // combine query
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462 |
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463 | // retrieves the value of one of the arguments
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464 | void parse_saved_args(text_t &args, text_t key, text_t &value)
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465 | {
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466 | text_t::iterator here = args.begin();
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467 | text_t::iterator end = args.end();
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468 | text_t::iterator it;
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469 | while (here != end) {
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470 | if(*here==key[0]) {
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471 | it=findchar(here, end, '=');
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472 | if (it==end) {
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473 | value=""; return;
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474 | }
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475 | text_t entry = substr(here, it);
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476 | if (entry==key) {
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477 | here=it+1;
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478 | it=findchar(here, end, '&');
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479 | value = substr(here, it);
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480 | return;
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481 | }
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482 | }
|
---|
483 | here++;
|
---|
484 | }// while
|
---|
485 | }
|
---|
486 |
|
---|
487 | // retrieves the value of all of the arguments
|
---|
488 | void parse_saved_args(text_t &args, infodbclass &info)
|
---|
489 | {
|
---|
490 | text_t::iterator here = args.begin();
|
---|
491 | text_t::iterator end = args.end();
|
---|
492 | text_t::iterator it;
|
---|
493 | text_tarray values;
|
---|
494 |
|
---|
495 | splitchar(here, end, '&', values);
|
---|
496 |
|
---|
497 | text_tarray::iterator start = values.begin();
|
---|
498 | text_tarray::iterator stop = values.end();
|
---|
499 |
|
---|
500 | text_t key;
|
---|
501 | text_t value;
|
---|
502 | while(start!=stop) {
|
---|
503 |
|
---|
504 | here=(*start).begin();
|
---|
505 | end=(*start).end();
|
---|
506 | it=findchar(here, end, '=');
|
---|
507 | if (it!=end) {
|
---|
508 | key = substr(here, it);
|
---|
509 | value = substr(it+1, end);
|
---|
510 |
|
---|
511 | info[key]=value;
|
---|
512 | }
|
---|
513 | start++;
|
---|
514 | }
|
---|
515 | }
|
---|
516 |
|
---|
517 | void get_query_num(text_t &query, text_t &querynum)
|
---|
518 | {
|
---|
519 | text_t::iterator begin = query.begin();
|
---|
520 |
|
---|
521 | while (*begin >='0'&& *begin <='9') { // get the digits
|
---|
522 | querynum.push_back(*begin);
|
---|
523 | begin++;
|
---|
524 | }
|
---|
525 | if (*begin != ':') {
|
---|
526 | // something has gone wrong
|
---|
527 | }
|
---|
528 | }
|
---|
529 |
|
---|
530 | void split_saved_query(text_t &query, text_t &querynum, text_t &numdocs, text_t &cgiargs)
|
---|
531 | {
|
---|
532 | text_t::iterator begin = query.begin();
|
---|
533 | text_t::iterator end = query.end();
|
---|
534 |
|
---|
535 | while (*begin >='0'&& *begin <='9') { // get the digits
|
---|
536 | querynum.push_back(*begin);
|
---|
537 | begin++;
|
---|
538 | }
|
---|
539 | if (*begin != ':') {
|
---|
540 | // something has gone wrong
|
---|
541 | }
|
---|
542 | else begin++;
|
---|
543 | while (*begin >='0'&& *begin <='9') { // get the digits
|
---|
544 | numdocs.push_back(*begin);
|
---|
545 | begin++;
|
---|
546 | }
|
---|
547 | if (*begin == '+') { // get the + if there
|
---|
548 | numdocs.push_back(*begin);
|
---|
549 | begin++;
|
---|
550 | }
|
---|
551 |
|
---|
552 | cgiargs += (substr(begin, end)); // put rest of query into cgiargs
|
---|
553 |
|
---|
554 | }
|
---|
555 |
|
---|
556 | void format_user_info (text_t &cgiargs, text_t &userinfo, recptprotolistclass *protos, ostream &logout)
|
---|
557 | {
|
---|
558 | logout << "in format user info";
|
---|
559 | text_tset metadata;
|
---|
560 |
|
---|
561 | infodbclass argsinfo;
|
---|
562 | parse_saved_args(cgiargs, argsinfo);
|
---|
563 |
|
---|
564 | text_t collect = argsinfo["c"];
|
---|
565 | if (collect=="") {
|
---|
566 | userinfo="";
|
---|
567 | return;
|
---|
568 | }
|
---|
569 | recptproto *collectproto = protos->getrecptproto(collect,logout);
|
---|
570 | if (collectproto == NULL) {
|
---|
571 | userinfo="";
|
---|
572 | return;
|
---|
573 | }
|
---|
574 | metadata.insert(argsinfo["h"]);
|
---|
575 | FilterResponse_t response;
|
---|
576 |
|
---|
577 | get_info("collection", collect, metadata, false, collectproto, response, logout);
|
---|
578 |
|
---|
579 | text_t index = response.docInfo[0].metadata[argsinfo["h"]].values[0];
|
---|
580 |
|
---|
581 | text_t mode;
|
---|
582 | if (argsinfo["b"]=="0") { // simple mode
|
---|
583 | if (argsinfo["t"]=="0") {
|
---|
584 | mode = "all words";
|
---|
585 | }
|
---|
586 | else { // t=1
|
---|
587 | mode = "some words";
|
---|
588 | }
|
---|
589 |
|
---|
590 | }
|
---|
591 | else { // advanced mode
|
---|
592 | if (argsinfo["t"]=="0") {
|
---|
593 | mode = "boolean";
|
---|
594 | }
|
---|
595 | else {
|
---|
596 | mode = "ranked";
|
---|
597 | }
|
---|
598 | }
|
---|
599 |
|
---|
600 | text_t options;
|
---|
601 | if (argsinfo["k"]=="0") {
|
---|
602 | options = "case must match";
|
---|
603 | }
|
---|
604 | else {
|
---|
605 | options = "ignore case";
|
---|
606 | }
|
---|
607 | if (argsinfo["s"]=="0") {
|
---|
608 | options += ", whole word must match";
|
---|
609 | }
|
---|
610 | else {
|
---|
611 | options += ", ignore word endings";
|
---|
612 | }
|
---|
613 |
|
---|
614 | userinfo.clear();
|
---|
615 | userinfo = "collection ("+argsinfo["c"] + ") ";
|
---|
616 | userinfo += "search (" + index + ") ";
|
---|
617 | userinfo += "mode (" + mode +") ";
|
---|
618 | userinfo += "options (" + options + ")";
|
---|
619 |
|
---|
620 | logout << "in format user info - end";
|
---|
621 | }
|
---|