1 | /* testdbm.c - Driver program to test the dbm interface routines. */
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2 |
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3 | /* This file is part of GDBM, the GNU data base manager, by Philip A. Nelson.
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4 | Copyright (C) 1990, 1991, 1993 Free Software Foundation, Inc.
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5 |
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6 | GDBM 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, or (at your option)
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9 | any later version.
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10 |
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11 | GDBM 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 GDBM; see the file COPYING. If not, write to
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18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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19 |
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20 | You may contact the author by:
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21 | e-mail: [email protected]
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22 | us-mail: Philip A. Nelson
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23 | Computer Science Department
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24 | Western Washington University
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25 | Bellingham, WA 98226
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26 |
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27 | *************************************************************************/
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28 |
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29 |
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30 | /* include system configuration before all else. */
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31 | #include "autoconf.h"
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32 |
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33 | #include <stdio.h>
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34 | #include <sys/types.h>
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35 | #if HAVE_STDLIB_H
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36 | #include <stdlib.h>
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37 | #endif
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38 | #if HAVE_SYS_FILE_H
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39 | #include <sys/file.h>
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40 | #endif
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41 | #include <sys/stat.h>
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42 |
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43 | #define TRUE 1
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44 | #define FALSE 0
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45 |
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46 | typedef struct {
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47 | char *dptr;
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48 | int dsize;
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49 | } datum;
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50 |
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51 | extern datum fetch ();
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52 | extern datum firstkey ();
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53 | extern datum nextkey ();
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54 |
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55 | /* The test program allows one to call all the routines plus the hash function.
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56 | The commands are single letter commands. The user is prompted for all other
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57 | information. The commands are q (quit), f (fetch), s (store), d (delete),
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58 | 1 (firstkey), n (nextkey) and h (hash function). */
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59 |
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60 | int
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61 | main (argc, argv)
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62 | int argc;
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63 | char *argv[];
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64 | {
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65 |
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66 | char cmd_ch;
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67 |
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68 | datum key_data;
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69 | datum data_data;
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70 | datum return_data;
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71 |
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72 | char key_line[500];
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73 | char data_line[1000];
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74 |
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75 | char done = FALSE;
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76 | char sys[255];
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77 |
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78 | char *file_name;
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79 |
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80 | /* Argument checking. */
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81 | if (argc > 2)
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82 | {
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83 | printf ("Usage: %s [dbm-file] \n",argv[0]);
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84 | exit (2);
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85 | }
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86 |
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87 | if (argc > 1)
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88 | {
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89 | file_name = argv[1];
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90 | }
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91 | else
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92 | {
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93 | file_name = "junkdbm";
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94 | }
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95 |
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96 | /* Initialize */
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97 | data_data.dptr = data_line;
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98 |
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99 | if (dbminit (file_name) != 0)
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100 | {
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101 | sprintf (sys,"touch %s.pag %s.dir", file_name, file_name);
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102 | system (sys);
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103 | if (dbminit (file_name) != 0)
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104 | {
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105 | printf ("dbminit failed.\n");
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106 | exit (2);
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107 | }
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108 | }
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109 |
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110 | /* Welcome message. */
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111 | printf ("\nWelcome to the dbm test program. Type ? for help.\n\n");
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112 |
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113 | while (!done)
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114 | {
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115 | printf ("com -> ");
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116 | cmd_ch = getchar ();
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117 | while (getchar () != '\n') /* Do nothing. */;
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118 | switch (cmd_ch)
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119 | {
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120 | case 'q':
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121 | done = TRUE;
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122 | break;
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123 |
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124 | case 'f':
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125 | printf ("key -> ");
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126 | gets (key_line);
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127 | key_data.dptr = key_line;
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128 | key_data.dsize = strlen (key_line)+1;
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129 | return_data = fetch (key_data);
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130 | if (return_data.dptr != NULL)
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131 | printf ("data is ->%s\n\n", return_data.dptr);
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132 | else
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133 | printf ("No such item found.\n\n");
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134 | break;
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135 |
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136 | case 's':
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137 | printf ("key -> ");
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138 | gets (key_line);
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139 | key_data.dptr = key_line;
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140 | key_data.dsize = strlen (key_line)+1;
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141 | printf ("data -> ");
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142 | gets (data_line);
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143 | data_data.dsize = strlen (data_line)+1;
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144 | if (store (key_data, data_data) != 0)
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145 | printf ("Item not inserted. \n");
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146 | printf ("\n");
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147 | break;
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148 |
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149 | case 'd':
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150 | printf ("key -> ");
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151 | gets (key_line);
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152 | key_data.dptr = key_line;
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153 | key_data.dsize = strlen (key_line)+1;
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154 | if (delete (key_data) != 0)
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155 | printf ("Item not found or deleted\n");
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156 | printf ("\n");
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157 | break;
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158 |
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159 | case '1':
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160 | key_data = firstkey ();
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161 | if (key_data.dptr != NULL)
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162 | {
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163 | return_data = fetch (key_data);
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164 | printf ("key is ->%s\n", key_data.dptr);
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165 | printf ("data is ->%s\n\n", return_data.dptr);
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166 | }
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167 | else
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168 | printf ("No such item found.\n\n");
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169 | break;
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170 |
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171 |
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172 | case '2':
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173 | key_data = nextkey (key_data);
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174 | if (key_data.dptr != NULL)
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175 | {
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176 | return_data = fetch (key_data);
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177 | printf ("key is ->%s\n", key_data.dptr);
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178 | printf ("data is ->%s\n\n", return_data.dptr);
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179 | }
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180 | else
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181 | printf ("No such item found.\n\n");
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182 | break;
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183 |
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184 | case 'c':
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185 | {
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186 | int temp;
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187 | temp = 0;
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188 | return_data = firstkey ();
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189 | while (return_data.dptr != NULL)
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190 | {
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191 | temp++;
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192 | return_data = nextkey (return_data);
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193 | }
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194 | printf ("There are %d items in the database.\n\n", temp);
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195 | }
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196 | break;
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197 |
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198 | case '?':
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199 | printf ("c - count elements\n");
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200 | printf ("d - delete\n");
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201 | printf ("f - fetch\n");
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202 | printf ("q - quit\n");
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203 | printf ("s - store\n");
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204 | printf ("1 - firstkey\n");
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205 | printf ("2 - nextkey on last return value\n\n");
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206 | break;
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207 |
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208 | default:
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209 | printf ("What? \n\n");
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210 | break;
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211 |
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212 | }
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213 | }
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214 |
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215 | /* Quit normally. */
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216 | exit (0);
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217 |
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218 | }
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