1 | /**********************************************************************
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2 | *
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3 | * txt2db.cpp --
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4 | * A component of the Greenstone digital library software
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5 | * from the New Zealand Digital Library Project at the
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6 | * University of Waikato, New Zealand.
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7 | *
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8 | * Copyright (C) 1999 The New Zealand Digital Library Project
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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 |
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27 | #ifdef _MSC_VER
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28 | #include "autoconf.h"
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29 | #include "systems.h"
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30 | #include "gdbmconst.h"
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31 |
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32 | extern "C" {
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33 | #include "gdbm.h"
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34 | }
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35 |
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36 | #else
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37 | #include <gdbm.h>
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38 | #include <errno.h>
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39 | #endif
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40 |
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41 | #include "gsdlconf.h"
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42 | #include "text_t.h"
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43 | #include <stdlib.h>
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44 | #include <stdio.h>
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45 | #include <cstring>
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46 |
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47 | #if defined(GSDL_USE_OBJECTSPACE)
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48 | # include <ospace\std\iostream>
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49 | #elif defined(GSDL_USE_IOS_H)
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50 | # include <iostream.h>
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51 | #else
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52 | # include <iostream>
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53 | #endif
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54 |
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55 |
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56 | void print_usage (char *program_name) {
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57 | cerr << "usage: " << program_name << " [options] database-name" << endl << endl;
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58 | cerr << "options:" << endl;
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59 | cerr << " -append append to existing database" << endl << endl;
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60 | }
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61 |
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62 |
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63 | int main (int argc, char *argv[]) {
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64 | int block_size = 0;
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65 | GDBM_FILE dbf;
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66 | char c;
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67 | text_t key;
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68 | text_t value;
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69 | text_t tmp;
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70 | int num_dashes = 0;
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71 |
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72 | // sanity check
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73 | if (argc != 2 && argc != 3) {
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74 | print_usage (argv[0]);
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75 | exit (0);
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76 | }
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77 |
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78 | char *dbname;
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79 | int append = 0;
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80 | int delkey = 0;
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81 |
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82 | if (argc == 3) {
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83 | if (strcmp (argv[1], "-append") == 0) {
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84 | append = 1;
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85 | dbname = argv[2];
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86 | } else {
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87 | cerr << argv[1] << " is not a valid option." << endl << endl;
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88 | print_usage (argv[0]);
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89 | exit (0);
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90 | }
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91 | } else dbname = argv[1];
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92 |
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93 |
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94 | // open the database
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95 | // note that GDBM_FAST is obsolete on newer versions of gdbm
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96 | int read_write = GDBM_NEWDB | GDBM_FAST;
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97 | if (append) read_write = GDBM_WRCREAT | GDBM_FAST;
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98 |
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99 | #ifdef _MSC_VER
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100 | dbf = gdbm_open (dbname, block_size, read_write, 00664, NULL, 1);
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101 | #else
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102 | dbf = gdbm_open (dbname, block_size, read_write, 00664, NULL);
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103 | #endif
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104 | if (dbf == NULL) {
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105 | cerr << argv[0] << ": Couldn't create/open '" << dbname << "'" << endl;
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106 | cerr << " " << gdbm_strerror(gdbm_errno) << endl;
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107 | cerr << " gdbm errno = " << gdbm_errno << endl;
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108 | #ifndef _MSC_VER
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109 | cerr << " OS errno = " << errno << endl;
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110 | perror("gdbm_open failed: ");
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111 | #endif
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112 |
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113 | exit (-1);
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114 | }
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115 |
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116 | cin.get(c);
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117 | while (!cin.eof()) {
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118 | num_dashes = 0;
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119 | key = "";
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120 | value = "";
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121 |
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122 | // Parse out 'key' from [key]\n
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123 |
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124 | // scan for first occurrence of [
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125 | while (!cin.eof() && c != '[') cin.get(c);
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126 |
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127 | if (!cin.eof()) cin.get(c); // skip [
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128 |
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129 | // now look for closing ], building up 'key' as we go
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130 | while (!cin.eof() && c != ']') {
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131 | key.push_back ((unsigned char)c);
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132 | cin.get(c);
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133 | }
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134 |
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135 | if (!cin.eof()) {
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136 | // most likely an eol char, but if '-', then signifies record
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137 | // is to be deleted, not added
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138 | cin.get(c);
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139 | if (c == '-') {
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140 | delkey = 1;
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141 | }
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142 | else {
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143 | delkey = 0;
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144 | }
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145 | }
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146 | while (!cin.eof() && (c == '\n' || c == '\r')) cin.get(c);
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147 |
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148 | // look for 70 dashes
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149 | tmp = "";
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150 | while (!cin.eof() && (num_dashes < 70)) {
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151 | if (c == '\n') {
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152 | tmp.push_back ((unsigned char)c);
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153 | num_dashes = 0;
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154 |
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155 | } else if (c == '\r') {
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156 | // Here we are able to process both Windows-specific text files
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157 | // (containing carriage-return, newline) and Linux text files
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158 | // (containing only newline characters) by ignoring the Windows'
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159 | // carriage-return altogether so that we produce a uniform database
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160 | // file from either system's type of text file.
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161 | // If we don't ignore the carriage return here, txt.gz files
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162 | // produced on Windows cause a GS library running on Linux to break.
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163 | num_dashes = 0;
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164 |
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165 | } else if (c == '-') {
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166 | tmp.push_back ((unsigned char)c);
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167 | ++num_dashes;
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168 |
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169 | } else {
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170 | value += tmp;
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171 | value.push_back ((unsigned char)c);
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172 | tmp = "";
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173 | num_dashes = 0;
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174 | }
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175 | cin.get(c);
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176 | }
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177 |
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178 | // if the key is not an empty string store this key-value pair
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179 | if (!key.empty()) {
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180 | // convert key to a datum datatype
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181 | datum key_data;
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182 | key_data.dptr = key.getcstr();
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183 | if (key_data.dptr == NULL) {
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184 | cerr << "NULL key_data.dptr" << endl;
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185 | exit (0);
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186 | }
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187 | key_data.dsize = strlen(key_data.dptr);
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188 |
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189 | if (delkey) {
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190 | // delete the given key
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191 | if (gdbm_delete(dbf, key_data) < 0) {
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192 | cerr << "gdbm_delete returned an error trying to delete key " << key << ": " << gdbm_strerror (gdbm_errno) <<endl;
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193 | }
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194 | }
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195 | else {
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196 |
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197 | // add/append
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198 |
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199 | // convert value to a datum datatype
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200 | datum value_data;
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201 | value_data.dptr = value.getcstr();
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202 | if (value_data.dptr == NULL) {
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203 | cerr << "NULL value_data.dptr" << endl;
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204 | exit (0);
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205 | }
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206 | value_data.dsize = strlen(value_data.dptr);
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207 |
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208 | // store the value
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209 | if (gdbm_store (dbf, key_data, value_data, GDBM_REPLACE) < 0) {
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210 | cerr << "gdbm_store returned an error" << endl;
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211 | exit (0);
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212 | }
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213 |
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214 |
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215 | free(value_data.dptr);
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216 | }
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217 |
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218 | free(key_data.dptr);
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219 | }
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220 | }
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221 |
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222 | gdbm_close (dbf);
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223 |
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224 | return 0;
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225 | }
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