1 | /**************************************************************************
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2 | *
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3 | * Queryer.cpp -- simple interactive query program
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4 | * Copyright (C) 1999 Rodger McNab
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5 | *
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6 | * This program is free software; you can redistribute it and/or modify
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7 | * it under the terms of the GNU General Public License as published by
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8 | * the Free Software Foundation; either version 2 of the License, or
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9 | * (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 | *
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20 | * $Id: Queryer.cpp 879 2000-01-31 03:01:25Z rjmcnab $
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21 | *
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22 | **************************************************************************/
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23 |
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24 | #include "MGQuery.h"
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25 | #include "TextGet.h"
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26 |
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27 | #include "messages.h"
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28 | #include "mg_files.h"
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29 |
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30 | #include "QueryParser.h"
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31 |
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32 |
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33 | int main (int argc, char **argv) {
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34 | int ch;
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35 | char *filename = "";
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36 | char *basePath = "";
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37 |
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38 | opterr = 0;
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39 | msg_prefix = argv[0];
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40 |
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41 | // process the command line arguments
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42 | while ((ch = getopt (argc, argv, "f:d:h")) != -1) {
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43 | switch (ch) {
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44 | case 'f': /* input file */
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45 | filename = optarg;
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46 | break;
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47 | case 'd':
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48 | basePath = optarg;
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49 | set_basepath (basePath);
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50 | break;
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51 | case 'h':
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52 | case '?':
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53 | fprintf (stderr, "usage: %s [-h] [-d directory] -f name\n", argv[0]);
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54 | exit (1);
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55 | }
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56 | }
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57 |
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58 | if (filename[0] == '\0') {
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59 | FatalError (1, "A file name must be specified with -f\n");
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60 | }
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61 |
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62 | // init the text system
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63 | TextData textData;
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64 | if (!textData.LoadData (filename)) {
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65 | FatalError (1, "Couldn't load text information for \"%s\"", filename);
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66 | }
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67 |
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68 | // init the query system
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69 | IndexData indexData;
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70 | if (!indexData.LoadData (basePath, filename)) {
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71 | FatalError (1, "Couldn't load index information for \"%s\"", filename);
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72 | }
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73 |
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74 | // do querying
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75 | QueryInfo queryInfo;
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76 | SetCStr (queryInfo.docLevel, "Chapter");
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77 | queryInfo.maxDocs = 10;
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78 | queryInfo.sortByRank = true;
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79 | queryInfo.exactWeights = false;
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80 | queryInfo.needRankInfo = true;
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81 | queryInfo.needTermFreqs = true;
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82 |
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83 | QueryResult queryResult;
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84 | char query[2048];
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85 | UCArray queryArray;
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86 | QueryNode *queryTree = NULL;
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87 |
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88 | while (true) {
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89 | // cerr << "getting next line\n";
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90 | cout << "> ";
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91 | cin.getline(query, 2048, '\n');
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92 | SetCStr (queryArray, query);
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93 |
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94 | // check for commands
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95 | if (queryArray.size() >= 2 && queryArray[0] == '.') {
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96 | if (queryArray[1] == 'q') break; // quit
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97 |
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98 | if (queryArray[1] == 'p') {
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99 | // print
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100 | UCArray docText;
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101 | unsigned long docNum = 0;
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102 | cin >> docNum;
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103 | cin.getline(query, 2048, '\n'); // eat up return
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104 |
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105 | if (!GetDocText (textData, queryInfo.docLevel, docNum, docText)) {
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106 | FatalError (1, "Error while trying to get document %u", docNum);
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107 | }
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108 |
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109 | cout << docText << "\n";
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110 | }
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111 |
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112 | } else {
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113 | // regular query
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114 | queryTree = ParseQuery (queryArray);
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115 |
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116 | // print the query
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117 | PrintNode (cout, queryTree);
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118 |
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119 | MGQuery (indexData, queryInfo, queryTree, queryResult);
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120 | cout << queryResult;
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121 | cout << "\n";
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122 |
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123 | // delete the query
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124 | if (queryTree != NULL) delete queryTree;
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125 | queryTree = NULL;
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126 | }
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127 | }
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128 |
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129 |
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130 | // clean up, everybody clean up
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131 | textData.UnloadData ();
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132 | indexData.UnloadData ();
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133 | }
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134 |
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