1 | /**********************************************************************
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2 | *
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3 | * phindaction.cpp --
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4 | *
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5 | * Copyright 2001 Gordon W. Paynter
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6 | * Copyright 2001 The New Zealand Digital Library Project
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7 | *
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8 | * A component of the Greenstone digital library software
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9 | * from the New Zealand Digital Library Project at the
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10 | * University of Waikato, New Zealand.
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11 | *
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12 | * This program is free software; you can redistribute it and/or modify
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13 | * it under the terms of the GNU General Public License as published by
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14 | * the Free Software Foundation; either version 2 of the License, or
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15 | * (at your option) any later version.
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16 | *
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17 | * This program is distributed in the hope that it will be useful,
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18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 | * GNU General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, write to the Free Software
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24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25 | *
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26 | *********************************************************************/
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27 |
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28 | #include "gsdl_modules_cfg.h"
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29 | #ifdef GSDL_USE_PHIND_ACTION
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30 |
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31 | // Note that this action uses mgpp to retrieve phind info, calling MGQuery
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32 | // etc. directly, not through the protocol. This breaks our receptionist -
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33 | // collection server separation and should be fixed some day I guess.
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34 |
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35 | #include "phindaction.h"
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36 | #include "fileutil.h"
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37 |
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38 | phindaction::phindaction () {
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39 |
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40 | cgiarginfo arg_ainfo;
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41 |
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42 | arg_ainfo.shortname = "pc";
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43 | arg_ainfo.longname = "phind classifier";
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44 | arg_ainfo.multiplechar = true;
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45 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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46 | arg_ainfo.argdefault = g_EmptyText;
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47 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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48 | argsinfo.addarginfo (NULL, arg_ainfo);
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49 |
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50 | arg_ainfo.shortname = "pxml";
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51 | arg_ainfo.longname = "phind XML mode";
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52 | arg_ainfo.multiplechar = false;
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53 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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54 | arg_ainfo.argdefault = "0";
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55 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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56 | argsinfo.addarginfo (NULL, arg_ainfo);
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57 |
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58 | arg_ainfo.shortname = "ppnum";
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59 | arg_ainfo.longname = "phind phrase number";
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60 | arg_ainfo.multiplechar = true;
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61 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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62 | arg_ainfo.argdefault = "0";
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63 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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64 | argsinfo.addarginfo (NULL, arg_ainfo);
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65 |
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66 | arg_ainfo.shortname = "pptext";
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67 | arg_ainfo.longname = "phind phrase text";
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68 | arg_ainfo.multiplechar = true;
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69 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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70 | arg_ainfo.argdefault = g_EmptyText;
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71 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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72 | argsinfo.addarginfo (NULL, arg_ainfo);
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73 |
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74 | arg_ainfo.shortname = "pfe";
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75 | arg_ainfo.longname = "phind first_e";
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76 | arg_ainfo.multiplechar = true;
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77 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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78 | arg_ainfo.argdefault = "0";
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79 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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80 | argsinfo.addarginfo (NULL, arg_ainfo);
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81 |
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82 | arg_ainfo.shortname = "ple";
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83 | arg_ainfo.longname = "phind last_e";
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84 | arg_ainfo.multiplechar = true;
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85 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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86 | arg_ainfo.argdefault = "10";
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87 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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88 | argsinfo.addarginfo (NULL, arg_ainfo);
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89 |
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90 | arg_ainfo.shortname = "pfl";
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91 | arg_ainfo.longname = "phind first_l";
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92 | arg_ainfo.multiplechar = true;
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93 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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94 | arg_ainfo.argdefault = "0";
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95 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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96 | argsinfo.addarginfo (NULL, arg_ainfo);
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97 |
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98 | arg_ainfo.shortname = "pll";
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99 | arg_ainfo.longname = "phind last_l";
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100 | arg_ainfo.multiplechar = true;
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101 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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102 | arg_ainfo.argdefault = "10";
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103 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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104 | argsinfo.addarginfo (NULL, arg_ainfo);
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105 |
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106 | arg_ainfo.shortname = "pfd";
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107 | arg_ainfo.longname = "phind first_d";
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108 | arg_ainfo.multiplechar = true;
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109 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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110 | arg_ainfo.argdefault = "0";
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111 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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112 | argsinfo.addarginfo (NULL, arg_ainfo);
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113 |
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114 | arg_ainfo.shortname = "pld";
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115 | arg_ainfo.longname = "phind last_d";
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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 = "10";
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119 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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120 | argsinfo.addarginfo (NULL, arg_ainfo);
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121 | }
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122 |
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123 | phindaction::~phindaction () {
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124 | }
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125 |
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126 | void phindaction::get_cgihead_info (cgiargsclass &args, recptprotolistclass * /*protos*/,
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127 | response_t &response,text_t &response_data,
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128 | ostream &/*logout*/) {
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129 | response = content;
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130 | if (args["pxml"] == "1") {
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131 | response_data = "text/xml";
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132 | } else {
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133 | response_data = "text/html";
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134 | }
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135 | }
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136 |
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137 | bool phindaction::do_action (cgiargsclass &args, recptprotolistclass *protos,
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138 | browsermapclass * /*browsers*/, displayclass &disp,
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139 | outconvertclass &outconvert, ostream &textout,
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140 | ostream &logout) {
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141 |
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142 | unsigned long count_l, count_e, count_d;
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143 | unsigned long phrase = args["ppnum"].getulong();
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144 | text_t &word = args["pptext"];
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145 | unsigned long first_e = args["pfe"].getulong();
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146 | unsigned long last_e = args["ple"].getulong();
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147 | unsigned long first_l = args["pfl"].getulong();
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148 | unsigned long last_l = args["pll"].getulong();
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149 | unsigned long first_d = args["pfd"].getulong();
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150 | unsigned long last_d = args["pld"].getulong();
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151 | bool XMLmode = false;
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152 | if (args["pxml"] == "1") XMLmode = true;
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153 |
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154 | // must have a valid collection server
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155 | recptproto *collectproto = protos->getrecptproto (args["c"], logout);
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156 | if (collectproto == NULL) {
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157 | output_error("phindaction: ERROR: collection not set", textout,
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158 | outconvert, disp, logout, XMLmode);
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159 | return true;
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160 | }
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161 |
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162 | // the frequency and occurances of the phrase
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163 | unsigned long tf;
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164 | vector <unsigned long> el, linkdest, docNums, docfreq;
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165 | vector <UCArray> linktype;
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166 |
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167 | // the number of occurances to display
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168 | unsigned long ef, lf, df;
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169 |
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170 | text_t basepath = filename_cat(gsdlhome, "collect", args["c"],
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171 | "index", "phind" + args["pc"]);
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172 |
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173 | // If we don't know the phrase number, look it up
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174 | if (phrase == 0) {
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175 |
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176 | if (word.empty()) {
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177 | output_error("phindaction: ERROR: no phrase number or word", textout,
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178 | outconvert, disp, logout, XMLmode);
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179 | return true;
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180 | }
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181 |
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182 | DocNumArray result;
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183 | /** In order to prevent browser crashing problems, any method which
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184 | * previously suffered a silent fatal error, now instead returns false
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185 | * to indicate a fatal error has occured. We can then dispatch an
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186 | * appropriate error tag to the Phind applet (rather than leave it
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187 | * whiling away the milliseconds until the end of existence - or at
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188 | * least your browser - in an infinite loop!)
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189 | * DLConsulting 12-07-2004
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190 | */
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191 | if(!find_phrase_number_from_word(basepath, word, result)) {
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192 | output_error("phindaction: Fatal Error! Couldn't load index information in find_phrase_number_from_word()",
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193 | textout, outconvert, disp, logout, XMLmode);
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194 | return true;
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195 | }
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196 |
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197 | if (result.empty()) {
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198 | output_error("phindaction: The search term does not occur in the collection",
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199 | textout, outconvert, disp, logout, XMLmode);
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200 | return true;
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201 | } else {
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202 | phrase = result[0];
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203 | }
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204 | }
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205 |
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206 | // Create a TextData object to read the phrase data (pdata)
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207 | TextData textdata;
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208 |
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209 | text_t fullpath = filename_cat(basepath, "pdata");
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210 | char *fullpathc = fullpath.getcstr();
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211 | #if defined __WIN32__
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212 | char *base = "";
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213 | #else
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214 | char *base = "/";
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215 | #endif
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216 |
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217 | if (!textdata.LoadData (base, fullpathc)) {
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218 | // FatalError (1, "Couldn't load text information for \"%s\"", fullpathc);
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219 | //exit(0);
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220 | /** We must return something to the client, whether this error is fatal or
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221 | * no, otherwise we risk sending their browser into an infinite loop!
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222 | * DLConsulting 12-07-2004
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223 | */
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224 | output_error("phindaction: Fatal Error! Couldn't load text information for collection",
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225 | textout, outconvert, disp, logout, XMLmode);
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226 | return true;
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227 | }
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228 |
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229 | delete []fullpathc;
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230 |
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231 | /** Another previously silent method can now cry out.
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232 | * DLConsulting 12-07-2004
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233 | */
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234 | if(!get_phrase_all_data(textdata, phrase, word, tf, ef, lf, df, el,
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235 | linkdest, linktype, docNums, docfreq)) {
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236 | output_error(
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237 | "phindaction: Fatal Error! Couldn't parse phrase in get_phrase_all_data()",
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238 | textout, outconvert, disp, logout, XMLmode);
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239 | return true;
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240 | }
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241 |
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242 | // Output the header
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243 | if (XMLmode) {
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244 | textout << "<phinddata id=\"" << phrase
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245 | << "\" text=\"" << word
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246 | << "\" tf=\"" << tf
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247 | << "\" ef=\"" << ef
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248 | << "\" df=\"" << df
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249 | << "\" lf=\"" << lf
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250 | << "\">\n";
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251 | } else {
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252 | textout << "<html><head><title>" << word << "</title></head>\n"
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253 | << "<body><center>\n"
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254 | << "<p><h1>" << word << "</h1>\n"
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255 | << "<p><b>"<< word << "</b> occurs "
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256 | << tf << " times in " << df << " documents\n";
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257 | }
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258 |
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259 | // Output the thesaurus links
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260 | if ((lf > 0) && (first_l < last_l)) {
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261 |
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262 | // figure out the number of phrases to output
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263 | if (last_l > lf) {
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264 | last_l = lf;
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265 | }
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266 | count_l = last_l - first_l;
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267 |
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268 | if (XMLmode) {
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269 | textout << "<thesauruslist length=\"" << lf
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270 | << "\" start=\"" << first_l
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271 | << "\" end=\"" << last_l << "\">\n";
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272 | /** DLConsulting 12-07-2004 */
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273 | if(!print_thesaurus_links(args["c"], XMLmode, textdata, linkdest, linktype,
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274 | first_l, last_l, disp, outconvert, textout)) {
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275 | output_error(
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276 | "phindaction: Fatal Error! Couldn't get phrase in get_phrase_freq_data()",
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277 | textout, outconvert, disp, logout, XMLmode);
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278 | return true;
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279 | }
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280 | textout << "</thesauruslist>\n";
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281 | }
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282 |
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283 | // output links as HTML
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284 | else {
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285 | if (count_l == lf) {
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286 | textout << "<p><b> " << count_l << " thesaurus links</b>\n";
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287 | } else {
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288 | textout << "<p><b>" << count_l << " of " << lf << " thesaurus links</b>\n";
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289 | }
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290 |
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291 | textout << "<p><table border=1><tr><th>type</th><th>topic</th><th>freq</th><th>docs</th></tr>\n";
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292 | /** DLConsulting 12-07-2004 */
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293 | if(!print_thesaurus_links(args["c"], XMLmode, textdata, linkdest, linktype,
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294 | first_l, last_l, disp, outconvert, textout)) {
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295 | output_error(
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296 | "phindaction: Fatal Error! Couldn't get phrase in get_phrase_freq_data()",
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297 | textout, outconvert, disp, logout, XMLmode);
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298 | return true;
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299 | }
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300 | textout << "</table>\n";
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301 |
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302 | if (last_l < lf) {
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303 | if ((last_l + 10) < lf) {
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304 | textout << outconvert << disp
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305 | << "<br><a href=\"_gwcgi_?"
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306 | << "c=" << args["c"]
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307 | << "&ppnum=" << phrase
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308 | << "&pfe=" << first_e
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309 | << "&ple=" << last_e
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310 | << "&pfd=" << first_d
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311 | << "&pld=" << last_d
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312 | << "&pfl=" << first_l
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313 | << "&pll=" << (last_l + 10)
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314 | << "\">Get more thesaurus links</a>\n";
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315 | }
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316 | textout << outconvert << disp
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317 | << "<br><a href=\"_gwcgi_?"
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318 | << "c=" << args["c"]
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319 | << "&ppnum=" << phrase
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320 | << "&pfe=" << first_e
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321 | << "&ple=" << last_e
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322 | << "&pfd=" << first_d
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323 | << "&pld=" << last_d
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324 | << "&pfl=" << first_l
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325 | << "&pll=" << lf
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326 | << "\">Get every thesaurus link</a>\n" ;
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327 | }
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328 | }
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329 | }
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330 |
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331 | // Output the expansions
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332 | if ((ef > 0) && (first_e < last_e)) {
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333 |
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334 | // figure out the number of phrases to output
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335 | if (last_e > el.size()) {
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336 | last_e = el.size();
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337 | }
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338 | count_e = last_e - first_e;
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339 |
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340 | // output expansions as XML
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341 | if (XMLmode) {
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342 | textout << "<expansionlist length=\"" << ef
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343 | << "\" start=\"" << first_e
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344 | << "\" end=\"" << last_e << "\">" << endl;
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345 |
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346 | print_expansions(args["c"], XMLmode, word, textdata, el, first_e,
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347 | last_e, disp, outconvert, textout);
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348 |
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349 | textout << "</expansionlist>\n";
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350 | }
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351 |
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352 | // output expansions as HTML
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353 | else {
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354 | if (count_e == el.size()) {
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355 | textout << "<p><b> " << count_e << " expansions</b>\n";
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356 | } else {
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357 | textout << "<p><b>" << count_e << " of " << ef << " expansions</b>\n";
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358 | }
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359 |
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360 | textout << "<p><table border=1><tr><th colspan=3>phrase</th><th>freq</th><th>docs</th></tr>\n";
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361 | print_expansions(args["c"], XMLmode, word, textdata, el, first_e,
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362 | last_e, disp, outconvert, textout);
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363 | textout << "</table>\n";
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364 |
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365 | if (last_e < ef) {
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366 | if ((last_e + 10) < ef) {
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367 | textout << outconvert << disp
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368 | << "<br><a href=\"_gwcgi_?"
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369 | << "c=" << args["c"]
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370 | << "&ppnum=" << phrase
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371 | << "&pfe=" << first_e
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372 | << "&ple=" << (last_e + 10)
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373 | << "&pfd=" << first_d
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374 | << "&pld=" << last_d
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375 | << "&pfl=" << first_l
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376 | << "&pll=" << last_l
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377 | << "\">Get more expansions</a>\n";
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378 | }
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379 | textout << outconvert << disp
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380 | << "<br><a href=\"_gwcgi_?"
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381 | << "c=" << args["c"]
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382 | << "&ppnum=" << phrase
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383 | << "&pfe=" << first_e
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384 | << "&ple=" << ef
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385 | << "&pfd=" << first_d
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386 | << "&pld=" << last_d
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387 | << "&pfl=" << first_l
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388 | << "&pll=" << last_l
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389 | << "\">Get every expansion</a>\n";
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390 | }
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391 | }
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392 | }
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393 |
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394 | // Output the document occurances
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395 | if ((df > 0) && (first_d < last_d)) {
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396 |
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397 | // figure out the phrases to output
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398 | if (last_d > docNums.size()) {
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399 | last_d = docNums.size();
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400 | }
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401 | count_d = last_d - first_d;
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402 |
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403 | // output document list as XML
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404 | if (XMLmode) {
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405 | textout << "<documentlist length=\"" << df
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406 | << "\" start=\"" << first_d
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407 | << "\" end=\"" << last_d << "\">\n";
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408 |
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409 | if(!print_documents(XMLmode, basepath, args["c"], docNums, docfreq,
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410 | first_d, last_d, disp, outconvert, textout)) {
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411 | output_error(
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412 | "phindaction: Fatal Error! Couldn't load text information in print_documents() or get_document_all_data()",
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413 | textout, outconvert, disp, logout, XMLmode);
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414 | return true;
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415 | }
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416 |
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417 | textout << "</documentlist>\n";
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418 | }
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419 |
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420 | // output document list as HTML
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421 | else {
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422 |
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423 | if (count_d == docNums.size()) {
|
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424 | textout << "<p><b> " << count_d << " documents</b>\n";
|
---|
425 | } else {
|
---|
426 | textout << "<p><b>" << count_d << " of " << df << " documents</b>\n";
|
---|
427 | }
|
---|
428 |
|
---|
429 | textout << "<p><table border=1><tr><th align=left>document</th><th>freq</th></tr>\n";
|
---|
430 | if(!print_documents(XMLmode, basepath, args["c"], docNums, docfreq,
|
---|
431 | first_d, last_d, disp, outconvert, textout)) {
|
---|
432 | output_error(
|
---|
433 | "phindaction: Fatal Error! Couldn't load text information in print_documents()",
|
---|
434 | textout, outconvert, disp, logout, XMLmode);
|
---|
435 | return true;
|
---|
436 | }
|
---|
437 | textout << "</table>\n";
|
---|
438 |
|
---|
439 | if (last_d < df) {
|
---|
440 | if ((last_d + 10) < df) {
|
---|
441 | textout << outconvert << disp
|
---|
442 | << "<br><a href=\"_gwcgi_?"
|
---|
443 | << "c=" << args["c"]
|
---|
444 | << "&ppnum=" << phrase
|
---|
445 | << "&pfe=" << first_e
|
---|
446 | << "&ple=" << last_e
|
---|
447 | << "&pfd=" << first_d
|
---|
448 | << "&pld=" << (last_d + 10)
|
---|
449 | << "&pfl=" << first_l
|
---|
450 | << "&pll=" << last_l
|
---|
451 | << "\">Get more documents</a>\n";
|
---|
452 | }
|
---|
453 | textout << outconvert << disp
|
---|
454 | << "<br><a href=\"_gwcgi_?"
|
---|
455 | << "c=" << args["c"]
|
---|
456 | << "&ppnum=" << phrase
|
---|
457 | << "&pfe=" << first_e
|
---|
458 | << "&ple=" << last_e
|
---|
459 | << "&pfd=" << first_d
|
---|
460 | << "&pld=" << df
|
---|
461 | << "&pfl=" << first_l
|
---|
462 | << "&pll=" << last_l
|
---|
463 | << "\">Get every document</a>\n";
|
---|
464 | }
|
---|
465 | }
|
---|
466 | }
|
---|
467 |
|
---|
468 | // Close the document
|
---|
469 | if (XMLmode) {
|
---|
470 | textout << "</phinddata>\n";
|
---|
471 | } else {
|
---|
472 | textout << "</center></body></html>\n";
|
---|
473 | }
|
---|
474 |
|
---|
475 | textdata.UnloadData ();
|
---|
476 |
|
---|
477 | return true;
|
---|
478 | }
|
---|
479 |
|
---|
480 | // Find the phrase number of a word in the index file
|
---|
481 | bool phindaction::find_phrase_number_from_word(const text_t &basepath,
|
---|
482 | const text_t &query,
|
---|
483 | DocNumArray &result) {
|
---|
484 |
|
---|
485 | // Open the index file for searching
|
---|
486 | IndexData indexData;
|
---|
487 |
|
---|
488 | text_t fullpath = filename_cat(basepath, "pword");
|
---|
489 | char *fullpathc = fullpath.getcstr();
|
---|
490 | #if defined __WIN32__
|
---|
491 | char *base = "";
|
---|
492 | #else
|
---|
493 | char *base = "/";
|
---|
494 | #endif
|
---|
495 |
|
---|
496 | if (!indexData.LoadData (base, fullpathc)) {
|
---|
497 | // FatalError (1, "Couldn't load index information for \"%s\"", fullpathc);
|
---|
498 | //exit(0);
|
---|
499 | /** Don't handle fatal errors here anymore.
|
---|
500 | * DLConsulting 12-07-2004
|
---|
501 | */
|
---|
502 | return false; // Indicates something very bad has happened
|
---|
503 | }
|
---|
504 |
|
---|
505 | delete []fullpathc;
|
---|
506 |
|
---|
507 | // set up the query object
|
---|
508 | QueryInfo queryInfo;
|
---|
509 | SetCStr (queryInfo.docLevel, "Document", 8);
|
---|
510 | queryInfo.maxDocs = 5;
|
---|
511 | queryInfo.sortByRank = true;
|
---|
512 | queryInfo.exactWeights = false;
|
---|
513 | queryInfo.needRankInfo = true;
|
---|
514 | queryInfo.needTermFreqs = true;
|
---|
515 |
|
---|
516 | // mode 1 = casefolded, unstemmed search
|
---|
517 | UCArray ucquery;
|
---|
518 | toUCArray(query, ucquery);
|
---|
519 | QueryNode *queryTree = ParseQuery(ucquery, 1, 1);
|
---|
520 |
|
---|
521 | // perform the query
|
---|
522 | ExtQueryResult queryResult;
|
---|
523 | MGQuery (indexData, queryInfo, queryTree, queryResult);
|
---|
524 | // cout << "-- word lookup result -- " << endl << queryResult << endl ;
|
---|
525 |
|
---|
526 | result.clear();
|
---|
527 | result = queryResult.docs;
|
---|
528 |
|
---|
529 | // delete the query
|
---|
530 | if (queryTree != NULL) delete queryTree;
|
---|
531 |
|
---|
532 | indexData.UnloadData();
|
---|
533 |
|
---|
534 | /** This method now returns a boolean, so...
|
---|
535 | * DLConsulting 12-07-2004
|
---|
536 | */
|
---|
537 | return true; // Indicates that what happened is all good, baby.
|
---|
538 | }
|
---|
539 |
|
---|
540 | // Get all the data about a phrase
|
---|
541 | //
|
---|
542 | // The phrase is stored in textData as record phrase.
|
---|
543 | // We retrieve:
|
---|
544 | // word - the text of the phrase
|
---|
545 | // tf - the total frequency of the phrase
|
---|
546 | // ef - the expansion frequency of the phrase
|
---|
547 | // lf - the thesaurus link frequency of the phrase
|
---|
548 | // df - the document frequency of the phrase
|
---|
549 | // el - the list of phrases that are expansions of phrase
|
---|
550 | // ll - the list of phrases that are thesaurus links
|
---|
551 | // dl - the list of documents that contain phrase
|
---|
552 | bool phindaction::get_phrase_all_data(TextData &textdata, unsigned long phrase,
|
---|
553 | text_t &word, unsigned long &tf, unsigned long &ef,
|
---|
554 | unsigned long &lf, unsigned long &df,
|
---|
555 | vector <unsigned long> &el,
|
---|
556 | vector <unsigned long> &linkdest,
|
---|
557 | vector <UCArray> &linktype,
|
---|
558 | vector <unsigned long> &docnum,
|
---|
559 | vector <unsigned long> &docfrq) {
|
---|
560 | UCArray text;
|
---|
561 | UCArray docLevel;
|
---|
562 | SetCStr(docLevel, "Document", 8);
|
---|
563 |
|
---|
564 | // Look the word up in the textData
|
---|
565 | if (!GetDocText (textdata, docLevel, phrase, text)) {
|
---|
566 | // FatalError (1, "Error while trying to get phrase %u", phrase);
|
---|
567 | //exit(0);
|
---|
568 | return false; // Something very bad has happened.
|
---|
569 | }
|
---|
570 |
|
---|
571 | // Ignore everything up to the first colon
|
---|
572 | UCArray::iterator next = text.begin();
|
---|
573 | while (*next++ != ':');
|
---|
574 |
|
---|
575 | // ignore training carriage returns
|
---|
576 | while (text.back() == '\n') {
|
---|
577 | text.pop_back();
|
---|
578 | }
|
---|
579 |
|
---|
580 | // Get the word
|
---|
581 | word.clear();
|
---|
582 | for (; *next != ':'; ++next) {
|
---|
583 | word.push_back(*next);
|
---|
584 | }
|
---|
585 |
|
---|
586 | // Get total frequency
|
---|
587 | tf = 0;
|
---|
588 | for (++next; *next != ':'; ++next) {
|
---|
589 | tf *= 10;
|
---|
590 | tf += (*next - '0');
|
---|
591 | }
|
---|
592 |
|
---|
593 | // Get expansion frequency
|
---|
594 | ef = 0;
|
---|
595 | for (++next; *next != ':'; ++next) {
|
---|
596 | ef *= 10;
|
---|
597 | ef += (*next - '0');
|
---|
598 | }
|
---|
599 |
|
---|
600 | // Get document frequency
|
---|
601 | df = 0;
|
---|
602 | for (++next; *next != ':'; ++next) {
|
---|
603 | df *= 10;
|
---|
604 | df += (*next - '0');
|
---|
605 | }
|
---|
606 |
|
---|
607 | // Get expansion list
|
---|
608 | el.clear();
|
---|
609 | unsigned long e = 0;
|
---|
610 | for (++next; *next != ':'; ++next) {
|
---|
611 | if (*next == ',') {
|
---|
612 | el.push_back(e);
|
---|
613 | e = 0;
|
---|
614 | } else {
|
---|
615 | e *= 10;
|
---|
616 | e += (*next - '0');
|
---|
617 | }
|
---|
618 | }
|
---|
619 |
|
---|
620 | // Get document list & the document frequency list
|
---|
621 | docnum.clear();
|
---|
622 | docfrq.clear();
|
---|
623 | bool readnum = false;
|
---|
624 | unsigned long d = 0;
|
---|
625 | for (++next; *next != ':'; ++next) {
|
---|
626 | if (*next == ',') {
|
---|
627 | docnum.push_back(d);
|
---|
628 | readnum = true;
|
---|
629 | d = 0;
|
---|
630 | } else if (*next == ';') {
|
---|
631 | if (readnum) {
|
---|
632 | docfrq.push_back(d);
|
---|
633 | } else {
|
---|
634 | docnum.push_back(d);
|
---|
635 | docfrq.push_back(1);
|
---|
636 | }
|
---|
637 | readnum = false;
|
---|
638 | d = 0;
|
---|
639 | } else {
|
---|
640 | d *= 10;
|
---|
641 | d += (*next - '0');
|
---|
642 | }
|
---|
643 | }
|
---|
644 |
|
---|
645 | // Get thesaurus link frequency & link list
|
---|
646 | text.push_back(':');
|
---|
647 | text.push_back(':');
|
---|
648 |
|
---|
649 | // link frequency
|
---|
650 | lf = 0;
|
---|
651 | for (++next; *next != ':'; ++next) {
|
---|
652 | lf *= 10;
|
---|
653 | lf += (*next - '0');
|
---|
654 | }
|
---|
655 |
|
---|
656 | // two lists of link data
|
---|
657 | linkdest.clear();
|
---|
658 | linktype.clear();
|
---|
659 |
|
---|
660 | UCArray thistype;
|
---|
661 | thistype.clear();
|
---|
662 | bool typedone = false;
|
---|
663 | unsigned long l = 0;
|
---|
664 | for (++next; *next != ':'; ++next) {
|
---|
665 |
|
---|
666 | if (!typedone) {
|
---|
667 | // first read the link type, a charactor string
|
---|
668 | if (*next == ',') {
|
---|
669 | typedone = true;
|
---|
670 | } else {
|
---|
671 | thistype.push_back(*next);
|
---|
672 | }
|
---|
673 | } else {
|
---|
674 | // having read the link type, read the list of link destinations
|
---|
675 | if (*next == ',') {
|
---|
676 | linkdest.push_back(l);
|
---|
677 | linktype.push_back(thistype);
|
---|
678 | l = 0;
|
---|
679 | } else if (*next == ';') {
|
---|
680 | linkdest.push_back(l);
|
---|
681 | linktype.push_back(thistype);
|
---|
682 | l = 0;
|
---|
683 | thistype.clear();
|
---|
684 | typedone = false;
|
---|
685 | } else {
|
---|
686 | l *= 10;
|
---|
687 | l += (*next - '0');
|
---|
688 | }
|
---|
689 | }
|
---|
690 | }
|
---|
691 |
|
---|
692 | return true; // Indicates that what happened is all good, baby.
|
---|
693 | }
|
---|
694 |
|
---|
695 | bool phindaction::print_thesaurus_links(const text_t &collection, bool XMLmode,
|
---|
696 | TextData &textdata, vector <unsigned long> &linkdest,
|
---|
697 | vector <UCArray> &linktype, unsigned long first,
|
---|
698 | unsigned long last, displayclass &disp,
|
---|
699 | outconvertclass &outconvert, ostream &textout) {
|
---|
700 |
|
---|
701 | // information describing each link in the list
|
---|
702 | unsigned long phrase, tf, ef, df;
|
---|
703 | UCArray type, text;
|
---|
704 |
|
---|
705 | for (unsigned long l = first; l < last; ++l) {
|
---|
706 |
|
---|
707 | // get the phrase data
|
---|
708 | phrase = linkdest[l];
|
---|
709 | type = linktype[l];
|
---|
710 |
|
---|
711 | /** DLConsulting 12-07-2004 */
|
---|
712 | if(!get_phrase_freq_data(textdata, phrase, text, tf, ef, df)) {
|
---|
713 | return false;
|
---|
714 | }
|
---|
715 |
|
---|
716 | if (XMLmode) {
|
---|
717 | textout << "<thesaurus num=\"" << l
|
---|
718 | << "\" id=\"" << phrase
|
---|
719 | << "\" tf=\"" << tf
|
---|
720 | << "\" df=\"" << df
|
---|
721 | << "\" type=\"" << type
|
---|
722 | << "\" text=\"" << text
|
---|
723 | << "\"/>\n";
|
---|
724 | } else {
|
---|
725 | textout << "<tr valign=top><td>" << type << "</td><td>";
|
---|
726 | textout << outconvert << disp
|
---|
727 | << "<a href=\"_gwcgi_?c=" << collection;
|
---|
728 | textout << "&ppnum=" << phrase << "\">" << text << "</a>"
|
---|
729 | << "</td><td>" << tf << "</td><td>" << df << "</td></tr>\n";
|
---|
730 | }
|
---|
731 | }
|
---|
732 |
|
---|
733 | /** DLConsulting 12-07-2004 */
|
---|
734 | return true;
|
---|
735 | }
|
---|
736 |
|
---|
737 | // Get the frequency data about a phrase
|
---|
738 | //
|
---|
739 | // The phrase is stored in textData as record phrase.
|
---|
740 | // We retrieve:
|
---|
741 | // word - the text of the phrase
|
---|
742 | // tf - the total frequency of the phrase
|
---|
743 | // ef - the expansion frequency of the phrase
|
---|
744 | // df - the document frequency of the phrase
|
---|
745 | /**
|
---|
746 | * Returns:
|
---|
747 | * false if the method suffered a fatal error, true otherwise
|
---|
748 | */
|
---|
749 | bool phindaction::get_phrase_freq_data(TextData &textdata, unsigned long phrase,
|
---|
750 | UCArray &word, unsigned long &tf,
|
---|
751 | unsigned long &ef, unsigned long &df) {
|
---|
752 |
|
---|
753 | UCArray text;
|
---|
754 | UCArray docLevel;
|
---|
755 | SetCStr(docLevel, "Document", 8);
|
---|
756 |
|
---|
757 | // Look the word up in the textData
|
---|
758 | if (!GetDocText (textdata, docLevel, phrase, text)) {
|
---|
759 | // FatalError (1, "Error while trying to get phrase %u", phrase);
|
---|
760 | //exit(0);
|
---|
761 | /** DLConsulting 12-07-2004 */
|
---|
762 | return false;
|
---|
763 | }
|
---|
764 |
|
---|
765 | // Ignore everything up to the first colon
|
---|
766 | UCArray::iterator next = text.begin();
|
---|
767 | while (*next++ != ':');
|
---|
768 |
|
---|
769 | // Get the word
|
---|
770 | word.clear();
|
---|
771 | for (; *next != ':'; ++next) {
|
---|
772 | word.push_back(*next);
|
---|
773 | }
|
---|
774 |
|
---|
775 | // Get total frequency
|
---|
776 | tf = 0;
|
---|
777 | for (++next; *next != ':'; ++next) {
|
---|
778 | tf *= 10;
|
---|
779 | tf += (*next - '0');
|
---|
780 | }
|
---|
781 |
|
---|
782 | // Get expansion frequency
|
---|
783 | ef = 0;
|
---|
784 | for (++next; *next != ':'; ++next) {
|
---|
785 | ef *= 10;
|
---|
786 | ef += (*next - '0');
|
---|
787 | }
|
---|
788 |
|
---|
789 | // Get document frequency
|
---|
790 | df = 0;
|
---|
791 | for (++next; *next != ':'; ++next) {
|
---|
792 | df *= 10;
|
---|
793 | df += (*next - '0');
|
---|
794 | }
|
---|
795 |
|
---|
796 | /** DLConsulting 12-07-2004 */
|
---|
797 | return true;
|
---|
798 | }
|
---|
799 |
|
---|
800 | // Print a list of expansions
|
---|
801 | //
|
---|
802 | // Given the textData and a list of phrase numbers, print out each of the
|
---|
803 | // expansions.
|
---|
804 | void phindaction::print_expansions(const text_t &collection, bool XMLmode,
|
---|
805 | const text_t &body, TextData &textdata,
|
---|
806 | const vector <unsigned long> &elist,
|
---|
807 | unsigned long first, unsigned long last,
|
---|
808 | displayclass &disp, outconvertclass &outconvert,
|
---|
809 | ostream &textout) {
|
---|
810 |
|
---|
811 | UCArray word;
|
---|
812 | unsigned long phrase, tf, df, ef;
|
---|
813 |
|
---|
814 | UCArray suffix, prefix, ucbody;
|
---|
815 |
|
---|
816 | toUCArray(body, ucbody);
|
---|
817 |
|
---|
818 | for (unsigned long e = first; e < last; ++e) {
|
---|
819 |
|
---|
820 | phrase = elist[e];
|
---|
821 | get_phrase_freq_data(textdata, phrase, word, tf, ef, df);
|
---|
822 |
|
---|
823 | split_phrase(word, ucbody, prefix, suffix);
|
---|
824 |
|
---|
825 | if (XMLmode) {
|
---|
826 | // body is always the same as the text of the phrase, so no need to send it
|
---|
827 | textout << "<expansion num=\"" << e
|
---|
828 | << "\" id=\"" << phrase
|
---|
829 | << "\" tf=\"" << tf
|
---|
830 | << "\" df=\"" << df;
|
---|
831 | if (!prefix.empty()) {
|
---|
832 | textout << "\" prefix=\"" << prefix;
|
---|
833 | }
|
---|
834 | if (!suffix.empty()) {
|
---|
835 | textout << "\" suffix=\"" << suffix;
|
---|
836 | }
|
---|
837 | textout << "\"/>\n";
|
---|
838 | } else {
|
---|
839 | textout << outconvert << disp
|
---|
840 | << "<tr valign=top><td align=right><a href=\"_gwcgi_?"
|
---|
841 | << "c=" << collection << "&ppnum=" << phrase << "\">";
|
---|
842 | textout << prefix << "</a></td>";
|
---|
843 | textout <<outconvert << disp
|
---|
844 | << "<td align=center><a href=\"_gwcgi_?"
|
---|
845 | << "c=" << collection << "&ppnum=" << phrase << "\">"
|
---|
846 | << body << "</a></td>"
|
---|
847 | << "<td align=left><a href=\"_gwcgi_?"
|
---|
848 | << "c=" << collection << "&ppnum=" << phrase << "\">";
|
---|
849 | textout << suffix << "</a></td>"
|
---|
850 | << "<td>" << tf << "</td><td>" << df << "</td></tr>\n";
|
---|
851 | }
|
---|
852 | }
|
---|
853 | }
|
---|
854 |
|
---|
855 | // split an expansion into prefix and suffix
|
---|
856 | void phindaction::split_phrase(const UCArray &word, const UCArray &body,
|
---|
857 | UCArray &prefix, UCArray &suffix) {
|
---|
858 |
|
---|
859 | prefix.clear();
|
---|
860 | suffix.clear();
|
---|
861 |
|
---|
862 | bool readingPrefix = true;
|
---|
863 | UCArray::const_iterator here = word.begin();
|
---|
864 | UCArray::const_iterator end = word.end();
|
---|
865 |
|
---|
866 | while (here != end) {
|
---|
867 |
|
---|
868 | // if we've not read all the prefix, add the next char to the prefix
|
---|
869 | if (readingPrefix) {
|
---|
870 | if (phrase_match(body, here, end)) {
|
---|
871 | readingPrefix = false;
|
---|
872 | // trim whitespace from end of prefix & start of suffix
|
---|
873 | if (!prefix.empty()) {
|
---|
874 | prefix.pop_back();
|
---|
875 | }
|
---|
876 | if ((here != end) && (*here == ' ')) {
|
---|
877 | ++here;
|
---|
878 | }
|
---|
879 | } else {
|
---|
880 | prefix.push_back(*here);
|
---|
881 | ++here;
|
---|
882 | }
|
---|
883 | }
|
---|
884 | // if we've finished with the prefix, update the suffix
|
---|
885 | else {
|
---|
886 | suffix.push_back(*here);
|
---|
887 | ++here;
|
---|
888 | }
|
---|
889 | }
|
---|
890 | }
|
---|
891 |
|
---|
892 | // phrase_match
|
---|
893 | //
|
---|
894 | // compare two strings, one represented as an UCArray, the other as two
|
---|
895 | // UCArray iterators.
|
---|
896 | //
|
---|
897 | // Return true if the UCArray is the same as the phrase the iterators point
|
---|
898 | // to for the length of the UCArray.
|
---|
899 | bool phindaction::phrase_match(const UCArray &text, UCArray::const_iterator &here,
|
---|
900 | UCArray::const_iterator end) {
|
---|
901 |
|
---|
902 | UCArray::const_iterator one_here = text.begin();
|
---|
903 | UCArray::const_iterator one_end = text.end();
|
---|
904 | UCArray::const_iterator two_here = here;
|
---|
905 |
|
---|
906 | // iterate over the length of the first string, comparing each element to
|
---|
907 | // the corresponding element in the second string.
|
---|
908 | while (one_here != one_end) {
|
---|
909 |
|
---|
910 | if (two_here == end) {
|
---|
911 | return false;
|
---|
912 | } else if (*one_here != *two_here) {
|
---|
913 | return false;
|
---|
914 | }
|
---|
915 | ++one_here;
|
---|
916 | ++two_here;
|
---|
917 | }
|
---|
918 |
|
---|
919 | here = two_here;
|
---|
920 | return true;
|
---|
921 | }
|
---|
922 |
|
---|
923 | bool phindaction::print_documents(bool XMLmode, const text_t &basepath,
|
---|
924 | const text_t &collection,
|
---|
925 | const vector <unsigned long> &docNums,
|
---|
926 | const vector <unsigned long> &docFreq,
|
---|
927 | unsigned long first, unsigned long last,
|
---|
928 | displayclass &disp, outconvertclass &outconvert,
|
---|
929 | ostream &textout) {
|
---|
930 |
|
---|
931 | // Create a TextData object to read the document data
|
---|
932 | TextData docdata;
|
---|
933 |
|
---|
934 | text_t fullpath = filename_cat(basepath, "docs");
|
---|
935 | char *fullpathc = fullpath.getcstr();
|
---|
936 | #if defined __WIN32__
|
---|
937 | char *base = "";
|
---|
938 | #else
|
---|
939 | char *base = "/";
|
---|
940 | #endif
|
---|
941 |
|
---|
942 | if (!docdata.LoadData (base, fullpathc)) {
|
---|
943 | // FatalError (1, "Couldn't load text information for \"%s\"", fullpathc);
|
---|
944 | //exit(0);
|
---|
945 | /** DLConsulting 12-07-2004 */
|
---|
946 | return false;
|
---|
947 | }
|
---|
948 |
|
---|
949 | delete []fullpathc;
|
---|
950 |
|
---|
951 | UCArray title, hash;
|
---|
952 | unsigned long freq, doc;
|
---|
953 |
|
---|
954 | for (unsigned long d = first; d < last; ++d) {
|
---|
955 | doc = docNums[d];
|
---|
956 | freq = docFreq[d];
|
---|
957 |
|
---|
958 | /** DLConsulting 13-07-2004 */
|
---|
959 | if(!get_document_all_data(docdata, doc, title, hash)) {
|
---|
960 | return false;
|
---|
961 | }
|
---|
962 |
|
---|
963 | if (XMLmode) {
|
---|
964 | textout << "<document num=\"" << d
|
---|
965 | << "\" hash=\"" << hash
|
---|
966 | << "\" freq=\"" << freq
|
---|
967 | << "\" title=\"" << title << "\"/>\n";
|
---|
968 | } else {
|
---|
969 | textout << outconvert << disp
|
---|
970 | << "<tr valign=top><td><a href=\"_gwcgi_?"
|
---|
971 | << "c=" << collection;
|
---|
972 | textout << "&a=d&d=" << hash << "\">" << title << "</a>"
|
---|
973 | << "</td><td>" << freq << "</td></tr>\n";
|
---|
974 | }
|
---|
975 | }
|
---|
976 |
|
---|
977 | docdata.UnloadData();
|
---|
978 |
|
---|
979 | /** DLConsulting 12-07-2004 */
|
---|
980 | return true;
|
---|
981 | }
|
---|
982 |
|
---|
983 | // Get all the data about a docment
|
---|
984 | //
|
---|
985 | // The document's details are stored in docData as record docNum.
|
---|
986 | // We retrieve:
|
---|
987 | // title - the document's title
|
---|
988 | // hash - the document's unique OID
|
---|
989 | /** Returns:
|
---|
990 | * false if a fatal error occured, true otherwise
|
---|
991 | * DLConsulting 12-07-2004
|
---|
992 | */
|
---|
993 | bool phindaction::get_document_all_data(TextData &docdata, unsigned long docNum,
|
---|
994 | UCArray &title, UCArray &hash) {
|
---|
995 |
|
---|
996 | UCArray text;
|
---|
997 | UCArray docLevel;
|
---|
998 | SetCStr(docLevel, "Document", 8);
|
---|
999 |
|
---|
1000 | // Look the word up in the textData
|
---|
1001 | if (!GetDocText (docdata, docLevel, docNum, text)) {
|
---|
1002 | // FatalError (1, "Error while trying to get document %u", docNum);
|
---|
1003 | //exit(0);
|
---|
1004 | /** DLConsulting 13-07-2004 */
|
---|
1005 | return false;
|
---|
1006 | }
|
---|
1007 |
|
---|
1008 | // Ignore everything up to the first colon
|
---|
1009 | UCArray::iterator next = text.begin();
|
---|
1010 | while (*next++ != '\t');
|
---|
1011 |
|
---|
1012 | // Get the document OID (hash)
|
---|
1013 | hash.clear();
|
---|
1014 | for (; *next != '\t'; ++next) {
|
---|
1015 | hash.push_back(*next);
|
---|
1016 | }
|
---|
1017 |
|
---|
1018 | // Get the title
|
---|
1019 | text.push_back('\n');
|
---|
1020 | title.clear();
|
---|
1021 | for (++next; *next != '\n'; ++next) {
|
---|
1022 | title.push_back(*next);
|
---|
1023 | }
|
---|
1024 |
|
---|
1025 | /** DLConsulting 13-07-2004 */
|
---|
1026 | return true;
|
---|
1027 | }
|
---|
1028 |
|
---|
1029 | void phindaction::toUCArray(const text_t &in, UCArray &out) {
|
---|
1030 | out.clear();
|
---|
1031 | if (out.capacity() < in.size() + 1) {
|
---|
1032 | out.reserve(in.size() + 1);
|
---|
1033 | }
|
---|
1034 | text_t::const_iterator here = in.begin();
|
---|
1035 | text_t::const_iterator end = in.end();
|
---|
1036 | while (here != end) {
|
---|
1037 | out.push_back((unsigned char) *here);
|
---|
1038 | ++here;
|
---|
1039 | }
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | void phindaction::output_error (const text_t &message, ostream &textout,
|
---|
1043 | outconvertclass &outconvert,
|
---|
1044 | displayclass & disp, ostream &logout,
|
---|
1045 | bool XMLmode) {
|
---|
1046 |
|
---|
1047 | logout << outconvert << message << "\n";
|
---|
1048 | if (XMLmode) {
|
---|
1049 | textout << outconvert
|
---|
1050 | << "<phinddata>\n"
|
---|
1051 | << "<phinderror>" << message << "</phinderror>\n"
|
---|
1052 | << "</phinddata>\n";
|
---|
1053 | } else {
|
---|
1054 | textout << outconvert << disp
|
---|
1055 | << "_header_\n"
|
---|
1056 | << message
|
---|
1057 | << "_footer_\n";
|
---|
1058 | }
|
---|
1059 | }
|
---|
1060 |
|
---|
1061 | #endif //GSDL_USE_PHIND_ACTION
|
---|
1062 |
|
---|