[12844] | 1 | /**********************************************************************
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| 2 | *
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| 3 | * gdbmset -- add or replace a single value from the GDBM database
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| 4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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| 5 | *
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| 6 | * A component of the Greenstone digital library software
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| 7 | * from the New Zealand Digital Library Project at the
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| 8 | * University of Waikato, New Zealand.
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| 9 | *
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| 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | *
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| 24 | *********************************************************************/
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| 25 |
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| 26 | #ifdef __WIN32__
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| 27 | #include "autoconf.h"
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| 28 | #include "systems.h"
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| 29 | #include "gdbmconst.h"
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| 30 | #include "gdbm.h"
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| 31 |
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| 32 | #else
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| 33 | #include <gdbm.h>
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| 34 | #endif
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| 35 |
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| 36 | #include "gsdlconf.h"
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| 37 | #include <stdlib.h>
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| 38 |
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| 39 | #if defined(GSDL_USE_OBJECTSPACE)
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| 40 | #include <ospace\std\iostream>
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| 41 | #elif defined(GSDL_USE_IOS_H)
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| 42 | #include <iostream.h>
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| 43 | #else
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| 44 | #include <iostream>
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| 45 | #endif
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| 46 |
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| 47 | // use the standard namespace
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| 48 | #if !defined (GSDL_NAMESPACE_BROKEN)
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| 49 | #if defined(GSDL_USE_OBJECTSPACE)
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| 50 | using namespace ospace::std;
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| 51 | #else
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| 52 | using namespace std;
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| 53 | #endif
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| 54 | #endif
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| 55 |
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| 56 | void
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| 57 | print_usage (char *program_name)
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| 58 | {
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[17091] | 59 | cerr << "usage: " << program_name << " <database_path> <key> [<value>] [append]" << endl;
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| 60 | cerr << "\t- if no value is given then the lexicon indicated by the key is removed" << endl;
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| 61 | cerr << "\t- if a value is given followed by 'append' then the value is " << endl;
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| 62 | cerr << "\t added to the existing entry rather than overwriting it" << endl;
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| 63 | cerr << endl;
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[12844] | 64 | }
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| 65 |
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| 66 |
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[17091] | 67 | int main (int argc, char *argv[])
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[12844] | 68 | {
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| 69 | int block_size = 0;
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| 70 | GDBM_FILE dbf;
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[17091] | 71 | datum key;
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[12844] | 72 |
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| 73 | // sanity check
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[17091] | 74 | if ((argc < 3) || (argc>5)) {
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[12844] | 75 | print_usage (argv[0]);
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[17091] | 76 | exit (-1);
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| 77 | }
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[12844] | 78 |
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| 79 | // open the database
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| 80 | #ifdef __WIN32__
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| 81 | dbf = gdbm_open (argv[1], block_size, GDBM_WRITER, 00664, NULL, 0);
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| 82 | #else
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| 83 | dbf = gdbm_open (argv[1], block_size, GDBM_WRITER, 00664, NULL);
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| 84 | #endif
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| 85 | if (dbf == NULL)
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| 86 | {
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[17782] | 87 | cerr << "couldn't open database connection to " << argv[1] << endl;
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[17091] | 88 | exit (-1);
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[12844] | 89 | }
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| 90 |
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| 91 | key.dsize = strlen(argv[2]);
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| 92 | key.dptr = argv[2];
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[17091] | 93 |
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| 94 | if(argc == 5) {
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| 95 |
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| 96 | if (strcmp(argv[4],"append")==0) {
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| 97 | datum orig_content,concat_content;
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| 98 |
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[17782] | 99 | //cerr << "Appending [" << argv[2] << "] to '" << argv[3] << "' (length " << strlen(argv[3]) << ")" << endl;
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[17091] | 100 | // get old value, then top up
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| 101 |
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| 102 | orig_content = gdbm_fetch (dbf, key);
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| 103 |
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| 104 | // append orig_content with argv[3]
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| 105 | concat_content.dsize = orig_content.dsize + strlen(argv[3]);
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| 106 | char* concat_data = new char[concat_content.dsize +1];// make room for \0 at end
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| 107 | if (orig_content.dsize>0) {
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| 108 | strncpy(concat_data,orig_content.dptr,orig_content.dsize);
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| 109 | strcpy(&concat_data[orig_content.dsize],argv[3]); // ensures \0 at end
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| 110 | }
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| 111 | else {
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| 112 | // first time key has been used
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| 113 | strcpy(concat_data,argv[3]); // ensures \0 at end
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| 114 | }
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| 115 |
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| 116 | concat_content.dptr = concat_data;
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| 117 | if(gdbm_store(dbf, key, concat_content, GDBM_REPLACE) != 0)
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| 118 | {
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[17782] | 119 | cerr << "failed to set [" << argv[2] << "] to '" << concat_data << "'" << endl;
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[17091] | 120 | }
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| 121 | delete [] concat_data;
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| 122 | }
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| 123 | else {
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| 124 | print_usage (argv[0]);
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| 125 | gdbm_close (dbf);
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| 126 | exit(-1);
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| 127 | }
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| 128 | }
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| 129 | else if (argc == 4) {
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| 130 | datum content;
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| 131 |
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[17782] | 132 | //cerr << "Setting [" << argv[2] << "] to '" << argv[3] << "' (length " << strlen(argv[3]) << ")" << endl;
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[12844] | 133 | content.dsize = strlen(argv[3]);
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| 134 | content.dptr = argv[3];
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| 135 | if(gdbm_store(dbf, key, content, GDBM_REPLACE) != 0)
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| 136 | {
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[17782] | 137 | cerr << "failed to set [" << argv[2] << "] to '" << argv[3] << "'" << endl;
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[12844] | 138 | }
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| 139 | }
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| 140 | else
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| 141 | {
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| 142 | if(gdbm_delete(dbf, key) != 0)
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| 143 | {
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[17782] | 144 | cerr << "failed to remove [" << argv[2] << "]" << endl;
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[12844] | 145 | }
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| 146 | }
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| 147 | gdbm_close (dbf);
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[17091] | 148 |
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[12844] | 149 | return 0;
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| 150 | }
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