1 | /**********************************************************************
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2 | *
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3 | * querytools.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 "querytools.h"
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27 | #include <ctype.h>
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28 | #include "unitool.h" // for is_unicode_letdig
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29 |
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30 | void set_query_type_args(ColInfoResponse_t *cinfo, cgiargsclass &args) {
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31 |
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32 | if (args["ct"].empty()) {
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33 | text_t build_type = cinfo->buildType;
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34 | if (build_type == "mgpp") {
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35 | args["ct"] = "1";
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36 | } else if (build_type == "lucene") {
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37 | args["ct"] = "2";
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38 | } else {
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39 | args["ct"] = "0";
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40 | }
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41 | }
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42 | text_t arg_ct = args["ct"];
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43 | if (arg_ct == "0") {
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44 | // mg
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45 | args["qt"] = "0";
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46 | args["qto"] = "0";
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47 | return;
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48 | }
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49 |
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50 | if (!args["qt"].empty() && !args["qto"].empty()) {
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51 | return;
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52 | }
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53 |
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54 | text_tmap::iterator check = cinfo->format.find("SearchTypes");
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55 | text_t search_types = "plain,form";
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56 | if(check != cinfo->format.end()){
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57 | search_types = (*check).second;
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58 | if (search_types.empty()) {
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59 | search_types = "plain,form";
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60 | }
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61 | }
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62 |
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63 | if (args["qto"].empty()) {
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64 | unsigned int type = 0;
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65 | if (findword(search_types.begin(), search_types.end(), "form") != search_types.end()) {
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66 | type |= 2;
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67 | }
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68 | if (findword(search_types.begin(), search_types.end(), "plain") != search_types.end()) {
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69 | type |= 1;
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70 | }
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71 | args.setintarg("qto", type);
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72 | }
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73 |
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74 | if (args["qt"].empty()) {
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75 | bool form_default = false;
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76 | int arg_qto = args.getintarg("qto");
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77 | if (arg_qto == 2 || (arg_qto == 3 && starts_with(search_types, "form"))) {
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78 | args["qt"] = "1";
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79 | } else {
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80 | args["qt"] = "0";
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81 | }
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82 | }
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83 | }
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84 |
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85 | // request.filterResultOptions and request.fields (if required) should
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86 | // be set from the calling code
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87 | void set_queryfilter_options (FilterRequest_t &request, const text_t &querystring,
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88 | cgiargsclass &args) {
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89 |
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90 | request.filterName = "QueryFilter";
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91 |
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92 | OptionValue_t option;
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93 |
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94 | option.name = "Term";
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95 | option.value = querystring;
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96 | request.filterOptions.push_back (option);
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97 |
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98 | option.name = "QueryType";
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99 | option.value = (args.getintarg("t")) ? "ranked" : "boolean";
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100 | request.filterOptions.push_back (option);
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101 |
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102 | option.name = "MatchMode";
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103 | // mgpp in advanced mode, always use some query
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104 | if (args.getintarg("ct") == 1 && args.getintarg("b") == 1) {
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105 | option.value = "some";
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106 | } else {
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107 | option.value = (args.getintarg("t")) ? "some" : "all";
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108 | }
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109 | request.filterOptions.push_back (option);
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110 |
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111 | option.name = "Casefold";
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112 | option.value = (args.getintarg("k")) ? "true" : "false";
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113 | request.filterOptions.push_back (option);
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114 |
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115 | option.name = "Stem";
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116 | option.value = (args.getintarg("s")) ? "true" : "false";
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117 | request.filterOptions.push_back (option);
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118 |
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119 | if (!args["h"].empty()) {
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120 | option.name = "Index";
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121 | option.value = args["h"];
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122 | request.filterOptions.push_back (option);
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123 | }
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124 |
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125 | if (!args["j"].empty()) {
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126 | option.name = "Subcollection";
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127 | option.value = args["j"];
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128 | request.filterOptions.push_back (option);
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129 | }
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130 |
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131 | if (!args["n"].empty()) {
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132 | option.name = "Language";
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133 | option.value = args["n"];
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134 | request.filterOptions.push_back (option);
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135 | }
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136 |
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137 | if (!args["g"].empty()) { // granularity for mgpp
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138 | option.name = "Level";
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139 | option.value = args["g"];
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140 | request.filterOptions.push_back (option);
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141 | }
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142 |
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143 | if (!args["fs"].empty()) { // filter string for lucene
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144 | option.name = "FilterString";
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145 | option.value = args["fs"];
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146 | request.filterOptions.push_back (option);
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147 | }
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148 |
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149 | if (!args["sf"].empty()) { // sort field for lucene
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150 | option.name = "SortField";
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151 | option.value = args["sf"];
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152 | request.filterOptions.push_back (option);
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153 | }
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154 |
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155 | // sort field for lucene
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156 | option.name = "FuzzySearch";
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157 | option.value = (args.getintarg("fuzzy")) ? "true" : "false";
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158 | request.filterOptions.push_back (option);
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159 |
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160 | set_more_queryfilter_options (request, args);
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161 | }
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162 |
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163 | void set_queryfilter_options (FilterRequest_t &request, const text_t &querystring1,
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164 | const text_t &querystring2, cgiargsclass &args) {
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165 |
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166 | set_queryfilter_options (request, querystring1, args);
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167 |
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168 | // fill in the second query if needed
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169 | if (!args["cq2"].empty()) {
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170 | OptionValue_t option;
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171 |
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172 | option.name = "CombineQuery";
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173 | option.value = args["cq2"];
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174 | request.filterOptions.push_back (option);
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175 |
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176 | option.name = "Term";
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177 | option.value = querystring2;
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178 | request.filterOptions.push_back (option);
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179 |
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180 | option.name = "QueryType";
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181 | option.value = (args.getintarg("t")) ? "ranked" : "boolean";
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182 | request.filterOptions.push_back (option);
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183 |
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184 | option.name = "Casefold";
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185 | option.value = (args.getintarg("k")) ? "true" : "false";
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186 | request.filterOptions.push_back (option);
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187 |
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188 | option.name = "Stem";
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189 | option.value = (args.getintarg("s")) ? "true" : "false";
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190 | request.filterOptions.push_back (option);
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191 |
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192 | if (!args["h2"].empty()) {
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193 | option.name = "Index";
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194 | option.value = args["h2"];
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195 | request.filterOptions.push_back (option);
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196 | }
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197 |
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198 | if (!args["j2"].empty()) {
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199 | option.name = "Subcollection";
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200 | option.value = args["j2"];
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201 | request.filterOptions.push_back (option);
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202 | }
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203 |
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204 | if (!args["n2"].empty()) {
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205 | option.name = "Language";
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206 | option.value = args["n2"];
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207 | request.filterOptions.push_back (option);
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208 | }
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209 | }
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210 | set_more_queryfilter_options (request, args);
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211 | }
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212 |
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213 | void set_more_queryfilter_options (FilterRequest_t &request, cgiargsclass &args) {
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214 |
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215 | OptionValue_t option;
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216 | int arg_m = args.getintarg("m");
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217 |
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218 | option.name = "Maxdocs";
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219 | option.value = arg_m;
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220 | request.filterOptions.push_back (option);
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221 |
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222 | // option.name = "StartResults";
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223 | // option.value = args["r"];
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224 | // request.filterOptions.push_back (option);
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225 |
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226 | // option.name = "EndResults";
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227 | // int endresults = args.getintarg("o") + (args.getintarg("r") - 1);
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228 | // if ((endresults > arg_m) && (arg_m != -1)) endresults = arg_m;
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229 | // option.value = endresults;
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230 | // request.filterOptions.push_back (option);
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231 | }
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232 |
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233 | bool is_special_character(int indexer_type, unsigned short character) {
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234 | // mgpp
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235 | if (indexer_type == 1) {
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236 | return (character == '#' || character == '/' || character == '*');
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237 | }
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238 | // lucene
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239 | else if (indexer_type ==2) {
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240 | return (character == '?' || character == '*' || character == '~' ||
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241 | character == '^');
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242 | }
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243 | return false;
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244 | }
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245 |
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246 | void format_querystring (text_t &querystring, int querymode, bool segment) {
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247 | text_t formattedstring;
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248 |
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249 | if (querymode == 1 && !segment) return;
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250 |
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251 | text_t::const_iterator here = querystring.begin();
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252 | text_t::const_iterator end = querystring.end();
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253 |
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254 | // space is used to insert spaces between Chinese
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255 | // characters. No space is needed before the first
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256 | // Chinese character.
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257 | bool space = false;
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258 |
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259 | // want to remove ()|!& from querystring so boolean queries are just
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260 | // "all the words" queries (unless querymode is advanced)
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261 | while (here != end) {
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262 | if ((querymode == 0) && (*here == '(' || *here == ')' || *here == '|' ||
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263 | *here == '!' || *here == '&')) {
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264 | formattedstring.push_back(' ');
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265 | } else if (segment) {
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266 | if ((*here >= 0x4e00 && *here <= 0x9fa5) ||
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267 | (*here >= 0xf900 && *here <= 0xfa2d)) {
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268 | // Chinese character
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269 | if (!space) formattedstring.push_back (0x200b); // zero width space
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270 | formattedstring.push_back (*here);
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271 | formattedstring.push_back (0x200b);
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272 | space = true;
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273 | } else {
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274 |
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275 | // non-Chinese character
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276 | formattedstring.push_back (*here);
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277 | space = false;
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278 |
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279 | }
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280 |
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281 | } else {
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282 | formattedstring.push_back (*here);
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283 | }
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284 | ++here;
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285 | }
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286 | querystring = formattedstring;
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287 | }
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288 |
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289 |
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290 |
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291 | void add_dates(text_t &querystring, int startdate, int enddate,
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292 | int startbc, int endbc, int ct)
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293 | {
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294 | if(startdate)
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295 | {
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296 | int querystringis = 0;
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297 | text_t::const_iterator here = querystring.begin();
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298 | text_t::const_iterator end = querystring.end();
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299 | while(here!=end)
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300 | {
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301 | if(!(isspace((*here)))){
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302 | here = end;
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303 | querystringis = 1;
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304 | }
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305 | else
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306 | ++here;
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307 | }
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308 | //converting BCE dates
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309 | if(startbc && startdate > 0)
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310 | {
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311 | startdate *= -1;
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312 | }
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313 | if(endbc && enddate > 0)
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314 | {
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315 | enddate *= -1;
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316 | }
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317 | if(enddate != 0 && enddate<startdate)
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318 | {
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319 | cout<<"enddate too small"<<endl;
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320 | return;
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321 | }
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322 | if(querystringis)
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323 | querystring.appendcstr(" AND");
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324 | if(!enddate)
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325 | {
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326 | if (ct==1) {
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327 | mgpp_adddateelem(querystring,startdate);
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328 | }
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329 | else { // lucene
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330 | lucene_adddateelem(querystring,startdate);
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331 | }
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332 | }
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333 | else{
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334 | int nextdate = startdate;
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335 | querystring.appendcstr(" (");
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336 | while(nextdate<=enddate)
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337 | {
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338 | if(nextdate!=0) {
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339 | if (ct==1) {
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340 | mgpp_adddateelem(querystring,nextdate);
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341 | }
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342 | else { // lucene
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343 | lucene_adddateelem(querystring,nextdate);
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344 | }
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345 | }
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346 | ++nextdate;
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347 | }
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348 | querystring.appendcstr(" )");
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349 | }
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350 | }
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351 |
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352 | }
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353 |
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354 | // search history tool
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355 | // also used for form query macros
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356 | text_t escape_quotes(const text_t &querystring) {
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357 |
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358 | text_t::const_iterator here = querystring.begin();
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359 | text_t::const_iterator end = querystring.end();
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360 |
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361 | text_t escquery = "";
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362 | while (here != end) {
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363 | if (*here != '\'' && *here != '\"' && *here != '\n' && *here != '\r') escquery.push_back(*here);
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364 | else if (*here == '\n' || *here == '\r') {
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365 | escquery.push_back(' ');
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366 | } else {
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367 | escquery +="\\\\";
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368 | escquery.push_back(*here);
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369 | }
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370 |
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371 | ++here;
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372 | }
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373 | return escquery;
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374 |
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375 | }
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376 |
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377 | // some query form parsing functions for use with mgpp & lucene
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378 |
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379 | void parse_reg_query_form(text_t &querystring, cgiargsclass &args)
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380 | {
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381 | querystring.clear();
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382 |
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383 | const int ct = args.getintarg("ct");
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384 | int argt = args.getintarg("t");// t=0 -and, t=1 - or
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385 |
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386 | text_t combine;
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387 | if (ct==1) {
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388 | if (argt == 0) combine = "&";
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389 | else combine = "|";
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390 | }
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391 | else { // lucene
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392 | if (argt == 0) combine = "AND";
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393 | else combine = "OR";
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394 | }
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395 |
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396 | text_t field = args["fqf"];
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397 | if (field.empty()) return; // no query
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398 | text_tarray fields;
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399 | splitchar(field.begin(), field.end(), ',', fields);
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400 |
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401 | text_t value = args["fqv"];
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402 | if (value.empty()) return; // somethings wrong
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403 | text_tarray values;
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404 | splitchar(value.begin(), value.end(), ',', values);
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405 |
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406 |
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407 | for (int i=0; i< values.size(); ++i) {
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408 | if (!values[i].empty()) {
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409 | if (ct == 1) {
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410 | mgpp_addqueryelem(querystring, fields[i], values[i], combine);
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411 | }
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412 | else { // lucene
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413 | lucene_addqueryelem(querystring, fields[i], values[i], combine);
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414 | }
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415 | }
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416 | }
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417 |
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418 | }
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419 |
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420 |
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421 | void parse_adv_query_form(text_t &querystring, cgiargsclass &args){
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422 |
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423 | querystring.clear();
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424 |
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425 | const int ct = args.getintarg("ct");
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426 | text_t combine;
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427 | if (ct==1) {
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428 | combine = "&";
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429 | }
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430 | else { // lucene
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431 | combine = "AND";
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432 | }
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433 |
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434 | text_t field = args["fqf"];
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435 | if (field.empty()) return; // no query
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436 | text_tarray fields;
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437 | splitchar(field.begin(), field.end(), ',', fields);
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438 |
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439 | text_t value = args["fqv"];
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440 | if (value.empty()) return; // somethings wrong
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441 | text_tarray values;
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442 | splitchar(value.begin(), value.end(), ',', values);
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443 |
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444 | text_t stem = args["fqs"];
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445 | if (stem.empty()) return; // somethings wrong
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446 | text_tarray stems;
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447 | splitchar(stem.begin(), stem.end(), ',', stems);
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448 |
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449 | text_t fold = args["fqk"];
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450 | if (fold.empty()) return; // somethings wrong
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451 | text_tarray folds;
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452 | splitchar(fold.begin(), fold.end(), ',', folds);
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453 |
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454 | text_t comb = args["fqc"];
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455 | if (comb.empty()) return; //somethings wrong
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456 | text_tarray combs;
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457 | splitchar(comb.begin(), comb.end(), ',', combs);
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458 |
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459 | for(int i=0; i< values.size(); ++i) {
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460 | if (!values[i].empty()) {
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461 | if (i!=0) {
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462 | if (ct==1) {
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463 | if (combs[i-1]=="and") combine = "&";
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464 | else if (combs[i-1]=="or")combine = "|";
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465 | else if (combs[i-1]=="not")combine = "!";
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466 | }
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467 | else { // lucene
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468 | if (combs[i-1]=="and") combine = "AND";
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469 | else if (combs[i-1]=="or")combine = "OR";
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470 | else if (combs[i-1]=="not")combine = "NOT";
|
---|
471 | }
|
---|
472 | }
|
---|
473 | text_t term = addstemcase(values[i], stems[i], folds[i], ct);
|
---|
474 | mgpp_addqueryelem(querystring, fields[i], term, combine);
|
---|
475 | }
|
---|
476 |
|
---|
477 | }
|
---|
478 | }
|
---|
479 |
|
---|
480 | text_t addstemcase(const text_t &terms, const text_t &stem, const text_t &fold,
|
---|
481 | const int indexer_type) {
|
---|
482 |
|
---|
483 | text_t outtext;
|
---|
484 | text_t word;
|
---|
485 | //unsigned short c;
|
---|
486 | text_t::const_iterator here = terms.begin();
|
---|
487 | text_t::const_iterator end = terms.end();
|
---|
488 |
|
---|
489 | while (here !=end) {
|
---|
490 |
|
---|
491 | if (is_unicode_letdig(*here) || is_special_character(indexer_type, *here)) {
|
---|
492 | // not word boundary
|
---|
493 | word.push_back(*here);
|
---|
494 | ++here;
|
---|
495 | }
|
---|
496 | else {
|
---|
497 | // found word boundary
|
---|
498 | if (!word.empty() ) {
|
---|
499 | if (stem == "1" || fold =="1") {
|
---|
500 | word += "#";
|
---|
501 | if (stem == "1") word += "s";
|
---|
502 | //else word += "u";
|
---|
503 |
|
---|
504 | if (fold == "1") word += "i";
|
---|
505 | //else word += "c";
|
---|
506 | }
|
---|
507 |
|
---|
508 | word += " ";
|
---|
509 | outtext += word;
|
---|
510 | word.clear();
|
---|
511 | }
|
---|
512 | if (*here == '\"') {
|
---|
513 | outtext.push_back(*here);
|
---|
514 | }
|
---|
515 | ++here;
|
---|
516 | }
|
---|
517 | }
|
---|
518 |
|
---|
519 | // get last word
|
---|
520 | if (!word.empty()) {
|
---|
521 | if (stem == "1"|| fold == "1") {
|
---|
522 | word += "#";
|
---|
523 | if (stem == "1") word += "s";
|
---|
524 | //else word += "u";
|
---|
525 |
|
---|
526 | if (fold == "1") word += "i";
|
---|
527 | //else word += "c";
|
---|
528 | }
|
---|
529 | word += " ";
|
---|
530 | outtext += word;
|
---|
531 | }
|
---|
532 | return outtext;
|
---|
533 | }
|
---|
534 |
|
---|
535 |
|
---|
536 | void mgpp_adddateelem(text_t& querystring, const int date)
|
---|
537 | {
|
---|
538 | querystring.appendcstr(" [");
|
---|
539 | if(date<0) {
|
---|
540 | querystring.appendcstr("bc");
|
---|
541 | querystring.appendint((date*-1));
|
---|
542 | }
|
---|
543 | else {
|
---|
544 | querystring.appendint(date);
|
---|
545 | }
|
---|
546 | querystring.appendcstr("]:CV");
|
---|
547 | }
|
---|
548 |
|
---|
549 | void lucene_adddateelem(text_t& querystring, const int date)
|
---|
550 | {
|
---|
551 | querystring.appendcstr(" CV:(");
|
---|
552 | if(date<0) {
|
---|
553 | querystring.appendcstr("bc");
|
---|
554 | querystring.appendint((date*-1));
|
---|
555 | }
|
---|
556 | else {
|
---|
557 | querystring.appendint(date);
|
---|
558 | }
|
---|
559 | querystring.appendcstr(")");
|
---|
560 | }
|
---|
561 |
|
---|
562 |
|
---|
563 | void mgpp_addqueryelem(text_t &querystring, text_t &tag,
|
---|
564 | text_t &query, text_t &combine) {
|
---|
565 | if (!querystring.empty()) { // have to put and/or
|
---|
566 | querystring += " " + combine + " ";
|
---|
567 |
|
---|
568 | }
|
---|
569 | if (tag=="ZZ" || tag=="") { // just add onto querystring
|
---|
570 | querystring += query;
|
---|
571 | }
|
---|
572 | else {
|
---|
573 | querystring += "["+query+"]:"+tag;
|
---|
574 | }
|
---|
575 |
|
---|
576 | }
|
---|
577 |
|
---|
578 | void lucene_addqueryelem(text_t &querystring, text_t &tag,
|
---|
579 | text_t &query, text_t &combine) {
|
---|
580 | if (!querystring.empty()) { // have to put and/or
|
---|
581 | querystring += " " + combine + " ";
|
---|
582 |
|
---|
583 | }
|
---|
584 | if (tag=="ZZ" || tag=="") { // just add onto querystring
|
---|
585 | querystring += query;
|
---|
586 | }
|
---|
587 | else {
|
---|
588 | querystring += tag+":("+query+")";
|
---|
589 | }
|
---|
590 | }
|
---|
591 |
|
---|
592 |
|
---|
593 | void addqueryelem_ex(text_t &querystring, const text_t &tag,
|
---|
594 | const text_t &terms, const text_t &stem, const text_t &fold,
|
---|
595 | const text_t& combine, const text_t& word_combine) {
|
---|
596 | if (!querystring.empty()) { // have to put and/or
|
---|
597 | querystring += " " + combine + " ";
|
---|
598 | }
|
---|
599 | text_t outtext; outtext.reserve(512);
|
---|
600 | text_t word; word.reserve(100);
|
---|
601 | //unsigned short c;
|
---|
602 | text_t::const_iterator here = terms.begin();
|
---|
603 | text_t::const_iterator end = terms.end();
|
---|
604 | bool inquote = false, firstword = true;
|
---|
605 |
|
---|
606 | text_t word2; word2.reserve(256);
|
---|
607 |
|
---|
608 | while (here !=end) {
|
---|
609 | if (is_unicode_space(*here)) {
|
---|
610 | if (word2 == "AND") { word2.clear(); word2.push_back(7527); word2.appendcarr("AND", 3); word2.push_back(7527); }
|
---|
611 | else if (word2 == "OR") { word2.clear(); word2.push_back(7527); word2.appendcarr("OR", 2); word2.push_back(7527); }
|
---|
612 | else if (word2 == "NOT") { word2.clear(); word2.push_back(7527); word2.appendcarr("NOT", 3); word2.push_back(7527); }
|
---|
613 | else if (word2 == "NEAR") { word2.clear(); word2.push_back(7527); word2.appendcarr("NEAR", 4); word2.push_back(7527); }
|
---|
614 | else if (word2 == "WITHIN") { word2.clear(); word2.push_back(7527); word2.appendcarr("WITHIN", 6); word2.push_back(7527); }
|
---|
615 | if (inquote) {
|
---|
616 | word2.push_back(*here);
|
---|
617 | }
|
---|
618 | word.append(word2); word2.clear();
|
---|
619 |
|
---|
620 | if (!inquote && !word.empty() ) {
|
---|
621 | // found word boundary
|
---|
622 |
|
---|
623 | if (stem == "1" || fold =="1") {
|
---|
624 | word += "#";
|
---|
625 | if (stem == "1") word += "s";
|
---|
626 | //else word += "u";
|
---|
627 |
|
---|
628 | if (fold == "1") word += "i";
|
---|
629 | //else word += "c";
|
---|
630 | }
|
---|
631 | if (firstword) {
|
---|
632 | firstword = false;
|
---|
633 | } else {
|
---|
634 | outtext += " " + word_combine + " ";
|
---|
635 | }
|
---|
636 | outtext += "[" + word + "]:"+tag;
|
---|
637 | word.clear();
|
---|
638 | }
|
---|
639 | ++here;
|
---|
640 | } else if (*here == '\"') {
|
---|
641 | word2.push_back(*here);
|
---|
642 | inquote = !inquote;
|
---|
643 | ++here;
|
---|
644 | } else {
|
---|
645 | // not word boundary
|
---|
646 | word2.push_back(*here);
|
---|
647 | ++here;
|
---|
648 | }
|
---|
649 | }
|
---|
650 |
|
---|
651 | // get last word
|
---|
652 | if (!word2.empty()) {
|
---|
653 | if (word2 == "AND") { word2.clear(); word2.push_back(7527); word2.appendcarr("AND", 3); word2.push_back(7527); }
|
---|
654 | else if (word2 == "OR") { word2.clear(); word2.push_back(7527); word2.appendcarr("OR", 2); word2.push_back(7527); }
|
---|
655 | else if (word2 == "NOT") { word2.clear(); word2.push_back(7527); word2.appendcarr("NOT", 3); word2.push_back(7527); }
|
---|
656 | else if (word2 == "NEAR") { word2.clear(); word2.push_back(7527); word2.appendcarr("NEAR", 4); word2.push_back(7527); }
|
---|
657 | else if (word2 == "WITHIN") { word2.clear(); word2.push_back(7527); word2.appendcarr("WITHIN", 6); word2.push_back(7527); }
|
---|
658 | word.append(word2); word2.clear();
|
---|
659 |
|
---|
660 | if (stem == "1"|| fold == "1") {
|
---|
661 | word += "#";
|
---|
662 | if (stem == "1") word += "s";
|
---|
663 | //else word += "u";
|
---|
664 |
|
---|
665 | if (fold == "1") word += "i";
|
---|
666 | //else word += "c";
|
---|
667 | }
|
---|
668 | if (!outtext.empty()) outtext += " " + word_combine + " ";
|
---|
669 | outtext += "[" + word + "]:"+tag;
|
---|
670 | }
|
---|
671 | querystring += "(" + outtext + ")";
|
---|
672 | }
|
---|
673 |
|
---|
674 |
|
---|
675 | void add_field_info(text_t &querystring, const text_t &tag, int type) {
|
---|
676 |
|
---|
677 | if (tag == "") return; // do nothing
|
---|
678 | if (type == 1) { //mgpp
|
---|
679 | querystring = "["+querystring+"]:"+tag;
|
---|
680 | } else if (type == 2) { // lucene
|
---|
681 | querystring = tag+":("+querystring+")";
|
---|
682 | }
|
---|
683 |
|
---|
684 | }
|
---|
685 |
|
---|
686 |
|
---|
687 | void format_field_info_lucene(text_t &querystring, cgiargsclass &args) {
|
---|
688 | text_t tag = args["fqf"];
|
---|
689 | if (tag == "ZZ") tag = ""; // ZZ is a special tag meaning no tag (all fields)
|
---|
690 | int type = 2; //lucene
|
---|
691 | int argt = args.getintarg("t");// t=0 -and, t=1 - or
|
---|
692 | int argb = args.getintarg("b"); // b=0 simple, b=1 advanced
|
---|
693 |
|
---|
694 | // lucene simple OR - the string stays as is, but may need field tag
|
---|
695 | if (argb==0 && argt == 1) {
|
---|
696 | // just tag the entire thing
|
---|
697 | if (tag != "") {
|
---|
698 | add_field_info(querystring, tag, type);
|
---|
699 | }
|
---|
700 | return;
|
---|
701 | }
|
---|
702 | bool in_phrase = false;
|
---|
703 |
|
---|
704 | text_t queryelem = "";
|
---|
705 | text_t finalquery = "";
|
---|
706 |
|
---|
707 | // only add in + for simple AND search
|
---|
708 | text_t combine = ((argb==0)? "+" : "");
|
---|
709 |
|
---|
710 | // for lucene, we need to change & to && and | to || if advanced search
|
---|
711 | // we need to tag the entire string, if we have a field
|
---|
712 | // if we are simple and search, then we put && in between words
|
---|
713 |
|
---|
714 | text_t::const_iterator here = querystring.begin();
|
---|
715 | text_t::const_iterator end = querystring.end();
|
---|
716 | while (here != end) {
|
---|
717 | if (is_unicode_letdig(*here) || is_special_character(type, *here)) {
|
---|
718 | queryelem.push_back(*here);
|
---|
719 | }
|
---|
720 |
|
---|
721 | // Detect phrase starts/finishes
|
---|
722 | else if (*here == '"') {
|
---|
723 | queryelem.push_back(*here);
|
---|
724 | if (in_phrase == false) in_phrase = true;
|
---|
725 | else {
|
---|
726 | finalquery += combine + queryelem;
|
---|
727 | queryelem.clear();
|
---|
728 | in_phrase = false;
|
---|
729 | }
|
---|
730 | }
|
---|
731 |
|
---|
732 | // Found word boundary, in a phrase
|
---|
733 | else if (in_phrase) {
|
---|
734 | queryelem.push_back(*here);
|
---|
735 | }
|
---|
736 | // Word boundary, but not in a phrase
|
---|
737 | else {
|
---|
738 | if (*here == '&') {
|
---|
739 | queryelem.push_back('&');
|
---|
740 | queryelem.push_back('&');
|
---|
741 | } else if (*here == '|') {
|
---|
742 | queryelem.push_back('|');
|
---|
743 | queryelem.push_back('|');
|
---|
744 | } else {
|
---|
745 | if (!queryelem.empty()) {
|
---|
746 | finalquery += combine + queryelem;
|
---|
747 | queryelem.clear();
|
---|
748 | }
|
---|
749 | finalquery.push_back(*here);
|
---|
750 | }
|
---|
751 | }
|
---|
752 |
|
---|
753 | ++here;
|
---|
754 | }
|
---|
755 |
|
---|
756 | // Get last element
|
---|
757 | if (!queryelem.empty()) {
|
---|
758 | finalquery += combine + queryelem;
|
---|
759 | }
|
---|
760 |
|
---|
761 | add_field_info(finalquery, tag, type);
|
---|
762 | querystring = finalquery;
|
---|
763 | cerr << "final query = "<<finalquery<<endl;
|
---|
764 | }
|
---|
765 |
|
---|
766 | void format_field_info_mgpp(text_t &querystring, cgiargsclass &args) {
|
---|
767 | text_t tag = args["fqf"];
|
---|
768 | if (tag == "ZZ") tag = ""; // ZZ is a special tag meaning no tag (all fields)
|
---|
769 |
|
---|
770 | int argt = args.getintarg("t");// t=0 -and, t=1 - or
|
---|
771 | int argb = args.getintarg("b"); // b=0 simple, b=1 advanced
|
---|
772 |
|
---|
773 | if (tag == "" && argb ==1) {
|
---|
774 | return; // no field specifier, advanced mode, the query stays as written
|
---|
775 | }
|
---|
776 |
|
---|
777 | int type = 1; // mgpp
|
---|
778 |
|
---|
779 | bool simple_and = (argb==0 && argt==0);
|
---|
780 | text_t finalquery = "";
|
---|
781 | text_t fieldpart ="";
|
---|
782 | text_t queryelem = "";
|
---|
783 | bool in_phrase = false;
|
---|
784 | bool in_field = false;
|
---|
785 |
|
---|
786 | text_t::const_iterator here = querystring.begin();
|
---|
787 | text_t::const_iterator end = querystring.end();
|
---|
788 | while (here != end) {
|
---|
789 | if (is_unicode_letdig(*here) || *here == '&' || is_special_character(type, *here)) {
|
---|
790 | queryelem.push_back(*here);
|
---|
791 | }
|
---|
792 | else if (*here == '|') {
|
---|
793 | in_field = false;
|
---|
794 | }
|
---|
795 | else if (*here == '!' || *here == '(' || *here == ')') {
|
---|
796 | if (!in_phrase) { // ignore these if in_phrase
|
---|
797 | // output field, then output operator
|
---|
798 | in_field = false;
|
---|
799 | if (!queryelem.empty()) {
|
---|
800 | if (!simple_and && !fieldpart.empty()) {
|
---|
801 | add_field_info(fieldpart, tag, type);
|
---|
802 | finalquery += fieldpart;
|
---|
803 | finalquery.push_back(' ');
|
---|
804 | fieldpart.clear();
|
---|
805 | }
|
---|
806 | fieldpart += queryelem;
|
---|
807 | }
|
---|
808 | if (!fieldpart.empty()) {
|
---|
809 | add_field_info(fieldpart, tag, type);
|
---|
810 | finalquery += fieldpart;
|
---|
811 | finalquery.push_back(' ');
|
---|
812 | }
|
---|
813 | fieldpart.clear();
|
---|
814 | queryelem.clear();
|
---|
815 | finalquery.push_back(*here);
|
---|
816 | finalquery.push_back(' ');
|
---|
817 | }
|
---|
818 | }
|
---|
819 | else if (*here == '"') {
|
---|
820 | queryelem.push_back(*here);
|
---|
821 | if (in_phrase == false) in_phrase = true;
|
---|
822 | else {
|
---|
823 | in_phrase = false;
|
---|
824 | }
|
---|
825 | }
|
---|
826 |
|
---|
827 | // Found word boundary, in a phrase
|
---|
828 | else if (in_phrase) {
|
---|
829 | queryelem.push_back(*here);
|
---|
830 | }
|
---|
831 | // Found a word boundary
|
---|
832 | else {
|
---|
833 | if (!queryelem.empty()) {
|
---|
834 | if (queryelem == "&") {
|
---|
835 | in_field = true;
|
---|
836 | queryelem.clear();
|
---|
837 | }
|
---|
838 | else if (starts_with(queryelem, "NEAR") || starts_with(queryelem, "WITHIN")) {
|
---|
839 |
|
---|
840 | if (argb==1) {
|
---|
841 | // simple search, these not allowed
|
---|
842 | in_field = true;
|
---|
843 | fieldpart += queryelem;
|
---|
844 | fieldpart.push_back(' ');
|
---|
845 | }
|
---|
846 | queryelem.clear();
|
---|
847 |
|
---|
848 | }
|
---|
849 | else {
|
---|
850 | if (!simple_and && !in_field) {
|
---|
851 | if (!fieldpart.empty()) {
|
---|
852 | add_field_info(fieldpart, tag, type);
|
---|
853 | finalquery += fieldpart;
|
---|
854 | finalquery.push_back(' ');
|
---|
855 | fieldpart.clear();
|
---|
856 | }
|
---|
857 | }
|
---|
858 |
|
---|
859 | fieldpart += queryelem;
|
---|
860 | fieldpart.push_back(' ');
|
---|
861 | queryelem.clear();
|
---|
862 | }
|
---|
863 | }
|
---|
864 | }
|
---|
865 | ++here;
|
---|
866 | }
|
---|
867 | // at the end
|
---|
868 | if (!queryelem.empty()) {
|
---|
869 | if (!simple_and && !in_field && !fieldpart.empty()) {
|
---|
870 | add_field_info(fieldpart, tag, type);
|
---|
871 | finalquery += fieldpart;
|
---|
872 | finalquery.push_back(' ');
|
---|
873 | fieldpart.clear();
|
---|
874 | }
|
---|
875 | fieldpart += queryelem;
|
---|
876 | }
|
---|
877 | if (!fieldpart.empty()) {
|
---|
878 | add_field_info(fieldpart, tag, type);
|
---|
879 | finalquery += fieldpart;
|
---|
880 | fieldpart.clear();
|
---|
881 | finalquery.push_back(' ');
|
---|
882 | }
|
---|
883 |
|
---|
884 | querystring = finalquery;
|
---|
885 | cerr << "final query = "<<finalquery<<endl;
|
---|
886 | }
|
---|
887 |
|
---|
888 | void format_field_info(text_t &querystring, cgiargsclass &args) {
|
---|
889 | int argct = args.getintarg("ct");
|
---|
890 | if (argct == 1) {
|
---|
891 | format_field_info_mgpp(querystring, args);
|
---|
892 | } else if (argct == 2) {
|
---|
893 | format_field_info_lucene(querystring, args);
|
---|
894 | }
|
---|
895 | }
|
---|
896 |
|
---|