1 | /**********************************************************************
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2 | *
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3 | * queryaction.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 | * PUT COPYRIGHT NOTICE HERE
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7 | *
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8 | * $Id: queryaction.cpp 398 1999-07-16 03:42:23Z sjboddie $
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9 | *
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10 | *********************************************************************/
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11 |
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12 | /*
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13 | $Log$
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14 | Revision 1.14 1999/07/16 03:41:29 sjboddie
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15 | changed isApprox
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16 |
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17 | Revision 1.13 1999/07/16 00:19:01 sjboddie
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18 | some changes to the way quoted queries are handled
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19 |
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20 | Revision 1.12 1999/07/09 02:17:55 rjmcnab
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21 | Setting macros needed for a second query.
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22 |
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23 | Revision 1.11 1999/07/07 06:13:10 rjmcnab
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24 | Added ability to combine two independant queries.
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25 |
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26 | Revision 1.10 1999/07/07 05:49:35 sjboddie
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27 | had another crack at the format string code - created a new formattools
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28 | module. It can now handle {If} and {Or} statements although there's a
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29 | bug preventing nested if's and or's.
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30 |
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31 | Revision 1.9 1999/07/01 22:48:46 sjboddie
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32 | had a go at getting a query result format string working
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33 |
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34 | Revision 1.8 1999/06/27 22:02:11 sjboddie
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35 | author is added to queryresults if there is one
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36 |
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37 | Revision 1.7 1999/06/26 01:10:18 rjmcnab
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38 | Made h, i, and n arguments saved in the compressed arguments.
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39 |
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40 | Revision 1.6 1999/06/24 05:12:25 sjboddie
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41 | lots of small changes
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42 |
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43 | Revision 1.5 1999/06/16 04:03:48 sjboddie
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44 | Now sets "cl" arg to "search" when going to a document from a search
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45 | results page. This allows the close book icon (in hierarchy toc) to
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46 | take you back to the results page if that's where you came from.
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47 | If you got to the document page somehow other than from a
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48 | classification or a search (i.e. if "cl" isn't set) then the close
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49 | book icon is disabled
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50 |
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51 | Revision 1.4 1999/06/16 02:08:38 sjboddie
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52 | got queryaction working
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53 |
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54 | Revision 1.3 1999/03/25 03:06:45 sjboddie
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55 |
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56 | altered receptionist slightly so it now passes *collectproto to
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57 | define_internal_macros and define_external_macros - need it
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58 | for browseaction
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59 |
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60 | Revision 1.2 1999/03/03 20:26:50 rjmcnab
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61 |
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62 | Modified stuff.
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63 |
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64 | Revision 1.1 1999/02/28 22:45:21 rjmcnab
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65 |
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66 | Initial revision.
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67 |
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68 | */
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69 |
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70 |
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71 | #include "queryaction.h"
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72 | #include "querytools.h"
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73 | #include "formattools.h"
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74 |
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75 | queryaction::queryaction () {
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76 | // this action uses cgi variable "a"
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77 | cgiarginfo arg_ainfo;
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78 | arg_ainfo.shortname = "a";
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79 | arg_ainfo.longname = "action";
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80 | arg_ainfo.multiplechar = true;
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81 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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82 | arg_ainfo.argdefault = "q";
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83 | arg_ainfo.savedarginfo = cgiarginfo::must;
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84 | argsinfo.addarginfo (NULL, arg_ainfo);
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85 |
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86 | // "h"
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87 | arg_ainfo.shortname = "h";
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88 | arg_ainfo.longname = "main index";
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89 | arg_ainfo.multiplechar = true;
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90 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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91 | arg_ainfo.argdefault = "";
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92 | arg_ainfo.savedarginfo = cgiarginfo::must;
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93 | argsinfo.addarginfo (NULL, arg_ainfo);
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94 |
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95 | // "h2"
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96 | arg_ainfo.shortname = "h2";
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97 | arg_ainfo.longname = "main index for second query";
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98 | arg_ainfo.multiplechar = true;
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99 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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100 | arg_ainfo.argdefault = "";
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101 | arg_ainfo.savedarginfo = cgiarginfo::must;
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102 | argsinfo.addarginfo (NULL, arg_ainfo);
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103 |
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104 | // "j"
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105 | arg_ainfo.shortname = "j";
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106 | arg_ainfo.longname = "sub collection index";
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107 | arg_ainfo.multiplechar = true;
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108 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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109 | arg_ainfo.argdefault = "";
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110 | arg_ainfo.savedarginfo = cgiarginfo::must;
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111 | argsinfo.addarginfo (NULL, arg_ainfo);
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112 |
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113 | // "j2"
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114 | arg_ainfo.shortname = "j2";
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115 | arg_ainfo.longname = "sub collection index for second query";
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116 | arg_ainfo.multiplechar = true;
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117 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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118 | arg_ainfo.argdefault = "";
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119 | arg_ainfo.savedarginfo = cgiarginfo::must;
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120 | argsinfo.addarginfo (NULL, arg_ainfo);
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121 |
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122 | // "n"
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123 | arg_ainfo.shortname = "n";
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124 | arg_ainfo.longname = "language index";
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125 | arg_ainfo.multiplechar = true;
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126 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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127 | arg_ainfo.argdefault = "";
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128 | arg_ainfo.savedarginfo = cgiarginfo::must;
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129 | argsinfo.addarginfo (NULL, arg_ainfo);
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130 |
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131 | // "n2"
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132 | arg_ainfo.shortname = "n2";
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133 | arg_ainfo.longname = "language index for second query";
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134 | arg_ainfo.multiplechar = true;
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135 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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136 | arg_ainfo.argdefault = "";
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137 | arg_ainfo.savedarginfo = cgiarginfo::must;
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138 | argsinfo.addarginfo (NULL, arg_ainfo);
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139 |
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140 | // "q"
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141 | arg_ainfo.shortname = "q";
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142 | arg_ainfo.longname = "query string";
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143 | arg_ainfo.multiplechar = true;
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144 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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145 | arg_ainfo.argdefault = "";
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146 | arg_ainfo.savedarginfo = cgiarginfo::must;
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147 | argsinfo.addarginfo (NULL, arg_ainfo);
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148 |
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149 | // "q2"
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150 | arg_ainfo.shortname = "q2";
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151 | arg_ainfo.longname = "query string for second query";
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152 | arg_ainfo.multiplechar = true;
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153 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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154 | arg_ainfo.argdefault = "";
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155 | arg_ainfo.savedarginfo = cgiarginfo::must;
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156 | argsinfo.addarginfo (NULL, arg_ainfo);
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157 |
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158 | // "cq2" ""=don't combine, "and", "or", "not"
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159 | arg_ainfo.shortname = "cq2";
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160 | arg_ainfo.longname = "combine queries";
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161 | arg_ainfo.multiplechar = true;
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162 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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163 | arg_ainfo.argdefault = "";
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164 | arg_ainfo.savedarginfo = cgiarginfo::must;
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165 | argsinfo.addarginfo (NULL, arg_ainfo);
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166 |
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167 | // "t" - 1 = ranked 0 = boolean
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168 | arg_ainfo.shortname = "t";
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169 | arg_ainfo.longname = "search type";
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170 | arg_ainfo.multiplechar = false;
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171 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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172 | arg_ainfo.argdefault = "1";
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173 | arg_ainfo.savedarginfo = cgiarginfo::must;
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174 | argsinfo.addarginfo (NULL, arg_ainfo);
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175 |
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176 | // "k"
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177 | arg_ainfo.shortname = "k";
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178 | arg_ainfo.longname = "casefolding";
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179 | arg_ainfo.multiplechar = false;
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180 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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181 | arg_ainfo.argdefault = "1";
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182 | arg_ainfo.savedarginfo = cgiarginfo::must;
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183 | argsinfo.addarginfo (NULL, arg_ainfo);
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184 |
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185 | // "s"
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186 | arg_ainfo.shortname = "s";
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187 | arg_ainfo.longname = "stemming";
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188 | arg_ainfo.multiplechar = false;
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189 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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190 | arg_ainfo.argdefault ="0";
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191 | arg_ainfo.savedarginfo = cgiarginfo::must;
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192 | argsinfo.addarginfo (NULL, arg_ainfo);
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193 |
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194 | // "m"
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195 | arg_ainfo.shortname = "m";
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196 | arg_ainfo.longname = "maximum number of documents";
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197 | arg_ainfo.multiplechar = true;
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198 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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199 | arg_ainfo.argdefault = "50";
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200 | arg_ainfo.savedarginfo = cgiarginfo::must;
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201 | argsinfo.addarginfo (NULL, arg_ainfo);
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202 |
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203 | // "o"
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204 | arg_ainfo.shortname = "o";
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205 | arg_ainfo.longname = "hits per page";
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206 | arg_ainfo.multiplechar = true;
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207 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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208 | arg_ainfo.argdefault = "20";
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209 | arg_ainfo.savedarginfo = cgiarginfo::must;
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210 | argsinfo.addarginfo (NULL, arg_ainfo);
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211 |
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212 | // "r"
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213 | arg_ainfo.shortname = "r";
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214 | arg_ainfo.longname = "start results from";
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215 | arg_ainfo.multiplechar = true;
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216 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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217 | arg_ainfo.argdefault = "1";
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218 | arg_ainfo.savedarginfo = cgiarginfo::must;
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219 | argsinfo.addarginfo (NULL, arg_ainfo);
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220 | }
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221 |
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222 | void queryaction::configure (const text_t &key, const text_tarray &cfgline) {
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223 | action::configure (key, cfgline);
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224 | }
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225 |
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226 | bool queryaction::init (ostream &logout) {
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227 | return action::init (logout);
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228 | }
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229 |
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230 | bool queryaction::check_cgiargs (cgiargsinfoclass &argsinfo, cgiargsclass &args,
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231 | ostream &logout) {
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232 |
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233 | // check t argument
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234 | int arg_t = args.getintarg("t");
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235 | if (arg_t != 0 && arg_t != 1) {
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236 | logout << "Warning: \"t\" argument out of range (" << arg_t << ")\n";
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237 | cgiarginfo *tinfo = argsinfo.getarginfo ("t");
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238 | if (tinfo != NULL) args["t"] = tinfo->argdefault;
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239 | }
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240 |
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241 | // check k argument
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242 | int arg_k = args.getintarg("k");
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243 | if (arg_k != 0 && arg_k != 1) {
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244 | logout << "Warning: \"k\" argument out of range (" << arg_k << ")\n";
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245 | cgiarginfo *kinfo = argsinfo.getarginfo ("k");
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246 | if (kinfo != NULL) args["k"] = kinfo->argdefault;
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247 | }
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248 |
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249 | // check s argument
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250 | int arg_s = args.getintarg("s");
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251 | if (arg_s != 0 && arg_s != 1) {
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252 | logout << "Warning: \"s\" argument out of range (" << arg_s << ")\n";
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253 | cgiarginfo *sinfo = argsinfo.getarginfo ("s");
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254 | if (sinfo != NULL) args["s"] = sinfo->argdefault;
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255 | }
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256 |
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257 | // check m argument
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258 | int arg_m = args.getintarg("m");
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259 | if (arg_m < 0) {
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260 | logout << "Warning: \"m\" argument less than 0 (" << arg_m << ")\n";
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261 | cgiarginfo *minfo = argsinfo.getarginfo ("m");
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262 | if (minfo != NULL) args["m"] = minfo->argdefault;
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263 | }
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264 |
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265 | // check o argument
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266 | int arg_o = args.getintarg("o");
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267 | if (arg_o < 0) {
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268 | logout << "Warning: \"o\" argument less than 0 (" << arg_o << ")\n";
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269 | cgiarginfo *oinfo = argsinfo.getarginfo ("o");
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270 | if (oinfo != NULL) args["o"] = oinfo->argdefault;
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271 | }
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272 |
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273 | // check r argument
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274 | int arg_r = args.getintarg("r");
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275 | if (arg_r < 1) {
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276 | logout << "Warning: \"r\" argument less than 1 (" << arg_r << ")\n";
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277 | cgiarginfo *rinfo = argsinfo.getarginfo ("r");
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278 | if (rinfo != NULL) args["r"] = rinfo->argdefault;
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279 | }
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280 |
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281 | return true;
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282 | }
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283 |
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284 | void queryaction::get_cgihead_info (cgiargsclass &/*args*/, response_t &response,
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285 | text_t &response_data, ostream &/*logout*/) {
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286 | response = content;
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287 | response_data = "text/html";
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288 | }
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289 |
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290 | void queryaction::define_internal_macros (displayclass &disp, cgiargsclass &args,
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291 | recptproto */*collectproto*/, ostream &/*logout*/) {
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292 |
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293 | // define_internal_macros doesn't sets the following macros.
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294 |
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295 | // _quotedquery_ the part of the query string that was quoted for post-processing
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296 |
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297 |
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298 |
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299 | // The following macros are set later (in define_query_macros) as they can't be set until
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300 | // the query has been done.
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301 |
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302 | // _freqmsg_ the term frequency string
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303 |
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304 | // _resultline_ the "x documents matched the query" string
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305 |
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306 | // _prevfirst_ these are used when setting up the links to previous/next
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307 | // _prevlast_ pages of results (_thisfirst_ and _thislast_ are used to set
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308 | // _nextfirst_ the 'results x-x for query: xxxx' string in the title bar)
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309 | // _nextlast_
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310 | // _thisfirst_
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311 | // _thislast_
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312 |
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313 |
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314 |
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315 | // get the quoted bits of the query string and set _quotedquery_
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316 | text_t &arg_q = args["q"];
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317 | if (!arg_q.empty()) {
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318 |
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319 | text_t::const_iterator end = arg_q.end();
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320 | text_t::const_iterator here = findchar (arg_q.begin(), end, '\"');
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321 | if (here != end) {
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322 | text_t quotedquery, tmptext;
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323 | bool first = true;
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324 | bool foundquote = false;
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325 | while (here != end) {
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326 | if (*here == '\"') {
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327 | if (foundquote) {
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328 | if (!tmptext.empty()) {
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329 | if (!first) quotedquery += " and ";
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330 | else first = false;
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331 | quotedquery += "\"" + tmptext + "\"";
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332 | tmptext.clear();
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333 | }
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334 | foundquote = false;
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335 | } else foundquote = true;
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336 | } else {
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337 | if (foundquote) tmptext.push_back (*here);
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338 | }
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339 | here ++;
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340 | }
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341 | disp.setmacro ("quotedquery", "query", quotedquery);
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342 | }
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343 | }
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344 | }
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345 |
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346 | // sets the selection box macros _hselection_, _jselection_, and _nselection_.
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347 | // each option will need an _optionxoption_ macro (i.e. an _hselection_ macro
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348 | // with options stx and ptx will need _optionhstx_ and _optionhptx_ macros)
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349 | void queryaction::set_option_macro (const text_t ¯oname, text_t current_value,
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350 | const FilterOption_t &option, displayclass &disp) {
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351 |
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352 | if (option.validValues.size() < 2) return;
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353 |
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354 | text_t macrovalue = "<select name=\"" + macroname + "\">\n";
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355 |
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356 | if (current_value.empty()) current_value = option.defaultValue;
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357 |
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358 | text_tarray::const_iterator thisvalue = option.validValues.begin();
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359 | text_tarray::const_iterator endvalue = option.validValues.end();
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360 |
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361 | while (thisvalue != endvalue) {
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362 | macrovalue += "<option value=\"" + *thisvalue + "\"";
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363 | if (*thisvalue == current_value)
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364 | macrovalue += " selected";
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365 | macrovalue += ">_option" + macroname + *thisvalue + "_\n";
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366 | thisvalue ++;
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367 | }
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368 | macrovalue += "</select>\n";
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369 | disp.setmacro (macroname + "selection", "Global", macrovalue);
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370 | }
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371 |
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372 | void queryaction::define_external_macros (displayclass &disp, cgiargsclass &args,
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373 | recptproto *collectproto, ostream &logout) {
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374 |
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375 | // define_external_macros sets the following macros:
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376 |
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377 | // some or all of these may not be required to be set
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378 | // _hselection_, _h2selection_ the selection box for the main part of the index
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379 | // _jselection_, _j2selection_ the selection box for the subcollection part of the index
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380 | // _nselection_, _n2selection_ the selection box for the language part of the index
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381 | // _cq2selection the selection box for combining two queries
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382 |
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383 |
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384 | // can't do anything if collectproto is null (i.e. no collection was specified)
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385 | if (collectproto == NULL) return;
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386 |
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387 | comerror_t err;
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388 | InfoFilterOptionsResponse_t response;
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389 | InfoFilterOptionsRequest_t request;
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390 | request.filterName = "QueryFilter";
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391 |
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392 | collectproto->get_filteroptions (args["c"], request, response, err, logout);
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393 | if (err == noError) {
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394 |
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395 | FilterOption_tmap::const_iterator it;
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396 | FilterOption_tmap::const_iterator end = response.filterOptions.end();
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397 |
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398 | // _hselection_ and _h2selection_ (Index)
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399 | it = response.filterOptions.find ("Index");
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400 | if (it != end) set_option_macro ("h", args["h"], (*it).second, disp);
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401 | if (it != end) set_option_macro ("h2", args["h2"], (*it).second, disp);
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402 |
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403 | // _jselection_ and _j2selection_ (Subcollection)
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404 | it = response.filterOptions.find ("Subcollection");
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405 | if (it != end) set_option_macro ("j", args["j"], (*it).second, disp);
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406 | if (it != end) set_option_macro ("j2", args["j2"], (*it).second, disp);
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407 |
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408 | // _nselection_ and _n2selection_ (Language)
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409 | it = response.filterOptions.find ("Language");
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410 | if (it != end) set_option_macro ("n", args["n"], (*it).second, disp);
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411 | if (it != end) set_option_macro ("n2", args["n2"], (*it).second, disp);
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412 |
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413 | // _cq2selection_ (CombineQuery)
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414 | it = response.filterOptions.find ("CombineQuery");
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415 | if (it != end) set_option_macro ("cq2", args["cq2"], (*it).second, disp);
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416 | }
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417 | }
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418 |
|
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419 | bool queryaction::do_action (cgiargsclass &args, recptproto *collectproto,
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420 | displayclass &disp, outconvertclass &outconvert,
|
---|
421 | ostream &textout, ostream &logout) {
|
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422 |
|
---|
423 | // if we have no format string see if the collection server has one
|
---|
424 | if (formatstring.empty()) {
|
---|
425 | ColInfoResponse_t collectinfo;
|
---|
426 | comerror_t err;
|
---|
427 | collectproto->get_collectinfo (args["c"], collectinfo, err, logout);
|
---|
428 | if (err == noError) {
|
---|
429 | text_tmap::const_iterator result = collectinfo.format.find("result");
|
---|
430 | if (result != collectinfo.format.end())
|
---|
431 | formatstring = (*result).second;
|
---|
432 | }
|
---|
433 | }
|
---|
434 | // if we still don't have a format string use the default
|
---|
435 | if (formatstring.empty())
|
---|
436 | formatstring = "<td valign=top nowrap>[link]_icontext_[/link]</td><td>[Title]</td>";
|
---|
437 |
|
---|
438 | if (collectproto == NULL) {
|
---|
439 | logout << "queryaction::do_action called with NULL collectproto\n";
|
---|
440 | textout << outconvert << disp << "_query:header_\n"
|
---|
441 | << "Error: Attempt to do query without setting collection\n"
|
---|
442 | << "_query:footer_\n";
|
---|
443 | } else {
|
---|
444 |
|
---|
445 | FilterRequest_t request;
|
---|
446 | FilterResponse_t response;
|
---|
447 | format_t *formatlistptr = new format_t();
|
---|
448 |
|
---|
449 | parse_formatstring (formatstring, formatlistptr, request.fields, request.getParents);
|
---|
450 |
|
---|
451 | // do the query
|
---|
452 | request.filterResultOptions = FROID | FRmetadata | FRtermFreq;
|
---|
453 | if (!do_query (request, args, collectproto, response, logout))
|
---|
454 | return false;
|
---|
455 |
|
---|
456 | // set macros
|
---|
457 | define_query_macros (args, disp, response);
|
---|
458 |
|
---|
459 | // output the header
|
---|
460 | textout << outconvert << disp << "_query:header_\n"
|
---|
461 | << "_query:content_";
|
---|
462 |
|
---|
463 | // output the results
|
---|
464 | textout << "<table cellspacing=4>\n";
|
---|
465 | ResultDocInfo_tarray::const_iterator this_doc = response.docInfo.begin();
|
---|
466 | ResultDocInfo_tarray::const_iterator end_doc = response.docInfo.end();
|
---|
467 |
|
---|
468 | while (this_doc != end_doc) {
|
---|
469 | textout << outconvert << disp << "<tr>\n"
|
---|
470 |
|
---|
471 | // << "<td valign=top nowrap>r: " << (*this_doc).ranking
|
---|
472 | // << " t: " << (*this_doc).num_terms_matched << " p: "
|
---|
473 | // << (*this_doc).num_phrase_match << "</td>\n"
|
---|
474 |
|
---|
475 | << get_formatted_string (*this_doc, formatlistptr) << "\n"
|
---|
476 | << "</tr>\n";
|
---|
477 | this_doc ++;
|
---|
478 | }
|
---|
479 | textout << "</table>\n";
|
---|
480 |
|
---|
481 | delete (formatlistptr);
|
---|
482 |
|
---|
483 | // output the footer
|
---|
484 | textout << outconvert << disp << "_query:footer_";
|
---|
485 | }
|
---|
486 |
|
---|
487 | return true;
|
---|
488 | }
|
---|
489 |
|
---|
490 | // define_query_macros sets the macros that couldn't be set until the
|
---|
491 | // query had been done. Those macros are _freqmsg_, _quotedquery_,
|
---|
492 | // _resultline_, _nextfirst_, _nextlast_, _prevfirst_, _prevlast_,
|
---|
493 | // _thisfirst_, and _thislast_
|
---|
494 | void queryaction::define_query_macros (cgiargsclass &args, displayclass &disp,
|
---|
495 | const FilterResponse_t &response) {
|
---|
496 |
|
---|
497 | int numdocs = response.numDocs;
|
---|
498 | int arg_m = args.getintarg("m");
|
---|
499 | if (numdocs > arg_m) numdocs = arg_m;
|
---|
500 |
|
---|
501 | // set up _freqmsg_ and _quotedquery_ macros
|
---|
502 | text_t freqmsg = "_textfreqmsg1_";
|
---|
503 | TermInfo_tarray::const_iterator this_term = response.termInfo.begin();
|
---|
504 | TermInfo_tarray::const_iterator end_term = response.termInfo.end();
|
---|
505 | while (this_term != end_term) {
|
---|
506 | freqmsg += (*this_term).term + ": " + (*this_term).freq;
|
---|
507 | if ((this_term + 1) != end_term)
|
---|
508 | freqmsg += ", ";
|
---|
509 | this_term ++;
|
---|
510 | }
|
---|
511 |
|
---|
512 | disp.setmacro ("freqmsg", "query", freqmsg);
|
---|
513 |
|
---|
514 |
|
---|
515 | // set up _resultline_ macro
|
---|
516 | text_t resline;
|
---|
517 | int maxdocs = args.getintarg("m");
|
---|
518 |
|
---|
519 | if (response.isApprox == Approximate) resline = "_textapprox_";
|
---|
520 | else if ((response.isApprox == MoreThan) || (response.numDocs > maxdocs))
|
---|
521 | resline = "_textmorethan_";
|
---|
522 | if (numdocs == 0) resline = "_textnodocs_";
|
---|
523 | else if (numdocs == 1) resline += "_text1doc_";
|
---|
524 | else
|
---|
525 | if (response.numDocs > maxdocs)
|
---|
526 | resline += text_t(maxdocs) + " _textlotsdocs_";
|
---|
527 | else
|
---|
528 | resline += text_t(response.numDocs) + " _textlotsdocs_";
|
---|
529 |
|
---|
530 | disp.setmacro("resultline", "query", resline);
|
---|
531 |
|
---|
532 |
|
---|
533 | int firstdoc = args.getintarg("r");
|
---|
534 | int hitsperpage = args.getintarg("o");
|
---|
535 |
|
---|
536 | // set up _thisfirst_ and _thislast_ macros
|
---|
537 | disp.setmacro ("thisfirst", "query", firstdoc);
|
---|
538 | int thislast = firstdoc + (hitsperpage - 1);
|
---|
539 | if (thislast > numdocs) thislast = numdocs;
|
---|
540 | disp.setmacro ("thislast", "query", thislast);
|
---|
541 |
|
---|
542 | // set up _prevfirst_ and _prevlast_ macros
|
---|
543 | if (firstdoc > 1) {
|
---|
544 | disp.setmacro ("prevlast", "query", firstdoc - 1);
|
---|
545 | int prevfirst = firstdoc - hitsperpage;
|
---|
546 | if (prevfirst < 1) prevfirst = 1;
|
---|
547 | disp.setmacro ("prevfirst", "query", prevfirst);
|
---|
548 | }
|
---|
549 |
|
---|
550 | // set up _nextfirst_ and _nextlast_ macros
|
---|
551 | if (thislast < numdocs) {
|
---|
552 | disp.setmacro ("nextfirst", "query", thislast + 1);
|
---|
553 | int nextlast = thislast + hitsperpage;
|
---|
554 | if (nextlast > numdocs) nextlast = numdocs;
|
---|
555 | disp.setmacro ("nextlast", "query", nextlast);
|
---|
556 | }
|
---|
557 | }
|
---|
558 |
|
---|
559 |
|
---|
560 |
|
---|