[535] | 1 | /**********************************************************************
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| 2 | *
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| 3 | * db2txt.cpp --
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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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[26650] | 26 | #ifdef _MSC_VER
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[203] | 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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[27597] | 33 |
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| 34 | /* header file for mkdir */
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| 35 | #include <sys/stat.h>
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| 36 |
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[203] | 37 | #include <gdbm.h>
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| 38 | #endif
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| 39 |
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| 40 | #include "gsdlconf.h"
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| 41 | #include <stdlib.h>
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| 42 |
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| 43 | #if defined(GSDL_USE_OBJECTSPACE)
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| 44 | #include <ospace\std\iostream>
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| 45 | #elif defined(GSDL_USE_IOS_H)
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| 46 | #include <iostream.h>
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| 47 | #else
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| 48 | #include <iostream>
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| 49 | #endif
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| 50 |
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[2499] | 51 | // use the standard namespace
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| 52 | #if !defined (GSDL_NAMESPACE_BROKEN)
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| 53 | #if defined(GSDL_USE_OBJECTSPACE)
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| 54 | using namespace ospace::std;
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| 55 | #else
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| 56 | using namespace std;
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| 57 | #endif
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| 58 | #endif
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| 59 |
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[203] | 60 | void print_usage (char *program_name) {
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[17782] | 61 | cerr << "usage: " << program_name << " database-name" << endl << endl;
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[203] | 62 | }
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| 63 |
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| 64 |
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[27597] | 65 | #ifdef _MSC32_
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| 66 | // Windows implementation
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| 67 | HANDLE hFile = CreateFile(_T("c:\\file.txt"), GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
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| 68 |
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| 69 | #else
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| 70 | // assume Unix
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| 71 | // lock a file on linux
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| 72 | // [hs, 2 july 2010]
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| 73 | // - modified to create a locl file local to the collection [jmt12]
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| 74 | int lock ()
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| 75 | {
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| 76 | string file_path ("");
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| 77 | char *collect_dir = getenv ("GSDLCOLLECTDIR");
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| 78 | if (collect_dir != NULL)
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| 79 | {
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| 80 | file_path += collect_dir;
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| 81 | }
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| 82 | file_path += "/tmp";
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| 83 | if ( access( file_path.c_str(), 00 ) != 0 )
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| 84 | {
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| 85 | mkdir(file_path.c_str(), 00777);
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| 86 | }
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| 87 | file_path += "/gdb.lock";
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| 88 | ///out << "txt2dbl::lock(" << file_path << ") => ";
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| 89 | int fd2 = open (file_path.c_str(), O_CREAT|O_RDWR, 00644);
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| 90 | close (fd2);
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| 91 | int fd = open (file_path.c_str(), O_RDWR);
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| 92 | flock lock = {F_WRLCK, SEEK_SET, 0, 0, 0};
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| 93 | fcntl (fd, F_SETLKW, &lock);
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| 94 | ///out << "locked!" << endl;
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| 95 | return fd;
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| 96 | }
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| 97 |
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| 98 | // unlock a file on linux
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| 99 | // [hs, 2 july 2010]
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| 100 | int unlock ( int fd )
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| 101 | {
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| 102 | flock lock1 = {F_UNLCK, SEEK_SET, 0, 0, 0};
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| 103 | fcntl (fd, F_SETLKW, &lock1);
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| 104 | return 0;
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| 105 | }
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| 106 | #endif
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| 107 |
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| 108 |
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[203] | 109 | int main (int argc, char *argv[]) {
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| 110 | int block_size = 0, i;
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| 111 | GDBM_FILE dbf;
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[15694] | 112 | datum key, value, nextkey;
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[203] | 113 |
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| 114 | // sanity check
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| 115 | if (argc != 2) {
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| 116 | print_usage (argv[0]);
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| 117 | exit (0);
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| 118 | }
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| 119 |
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| 120 | // open the database
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[26650] | 121 | #ifdef _MSC_VER
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[982] | 122 | dbf = gdbm_open (argv[1], block_size, GDBM_READER, 00664, NULL, 0);
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| 123 | #else
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[203] | 124 | dbf = gdbm_open (argv[1], block_size, GDBM_READER, 00664, NULL);
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[982] | 125 | #endif
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[203] | 126 | if (dbf == NULL) {
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[22039] | 127 | cerr << argv[0] << ": couldn't open " << argv[1] << endl;
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[203] | 128 | exit (0);
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| 129 | }
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| 130 |
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| 131 | key = gdbm_firstkey (dbf);
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| 132 | while (key.dptr != NULL) {
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| 133 | cout << "[";
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[9596] | 134 | for (i = 0; i < key.dsize; ++i)
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[203] | 135 | cout << key.dptr[i];
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[17782] | 136 | cout << "]" << endl;
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[203] | 137 | value = gdbm_fetch (dbf, key);
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[9596] | 138 | for (i = 0; i < value.dsize; ++i)
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[203] | 139 | cout << value.dptr[i];
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[17782] | 140 | cout << endl << "----------------------------------------------------------------------" << endl;
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[15218] | 141 | free(value.dptr);
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| 142 |
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[15694] | 143 | /* get next key */
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| 144 | nextkey = gdbm_nextkey (dbf, key);
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| 145 |
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| 146 | /* free old key's dptr, otherwise causes memory leak */
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| 147 | free(key.dptr);
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| 148 |
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| 149 | /* can now safely copy content of nextkey into key */
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| 150 | key = nextkey;
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[203] | 151 | }
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| 152 |
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| 153 | gdbm_close (dbf);
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| 154 | return 0;
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| 155 | }
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