[15699] | 1 | ###########################################################################
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| 2 | #
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| 3 | # dbutil.pm -- utility functions for writing to different databases
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| 4 | # Copyright (C) 2008 DL Consulting Ltd
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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 | package dbutil;
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| 27 |
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| 28 | use strict;
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| 29 |
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| 30 |
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[15710] | 31 | sub get_infodb_file_path
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| 32 | {
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| 33 | my $collection_name = shift(@_);
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| 34 | my $infodb_directory_path = shift(@_);
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| 35 |
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| 36 | return &get_infodb_file_path_gdbm($collection_name, $infodb_directory_path);
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| 37 | }
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| 38 |
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| 39 |
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[15711] | 40 | sub open_infodb_write_handle
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| 41 | {
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| 42 | my $infodb_file_path = shift(@_);
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| 43 |
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| 44 | return &open_infodb_write_handle_gdbm($infodb_file_path);
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| 45 | }
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| 46 |
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| 47 |
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[15705] | 48 | sub read_infodb_file
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| 49 | {
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| 50 | my $infodb_file_path = shift(@_);
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| 51 | my $infodb_map = shift(@_);
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| 52 |
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| 53 | &read_infodb_file_gdbm($infodb_file_path, $infodb_map);
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| 54 | }
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| 55 |
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| 56 |
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[15699] | 57 | sub write_infodb_entry
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| 58 | {
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| 59 | my $infodb_handle = shift(@_);
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| 60 | my $infodb_key = shift(@_);
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| 61 | my $infodb_map = shift(@_);
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| 62 |
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| 63 | &write_infodb_entry_gdbm($infodb_handle, $infodb_key, $infodb_map);
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| 64 | }
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| 65 |
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[15705] | 66 |
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| 67 |
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| 68 | # ----------------------------------------------------------------------------------------
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| 69 | # GDBM FUNCTIONS
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| 70 | # ----------------------------------------------------------------------------------------
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| 71 |
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[15710] | 72 | sub get_infodb_file_path_gdbm
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| 73 | {
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| 74 | my $collection_name = shift(@_);
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| 75 | my $infodb_directory_path = shift(@_);
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| 76 |
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| 77 | my $infodb_file_extension = (&util::is_little_endian() ? ".ldb" : ".bdb");
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| 78 | my $infodb_file_name = &util::get_dirsep_tail($collection_name) . $infodb_file_extension;
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| 79 | return &util::filename_cat($infodb_directory_path, $infodb_file_name);
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| 80 | }
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| 81 |
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| 82 |
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[15711] | 83 | sub open_infodb_write_handle_gdbm
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| 84 | {
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| 85 | my $infodb_file_path = shift(@_);
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| 86 |
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| 87 | my $txt2db_exe = &util::filename_cat("$ENV{'GSDLHOME'}/bin/$ENV{'GSDLOS'}", "txt2db" . &util::get_os_exe());
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[15717] | 88 | my $infodb_file_handle = undef;
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| 89 | if (!-e "$txt2db_exe" || !open($infodb_file_handle, "| $txt2db_exe \"$infodb_file_path\""))
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[15711] | 90 | {
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| 91 | return undef;
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| 92 | }
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| 93 |
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[15717] | 94 | return $infodb_file_handle;
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[15711] | 95 | }
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| 96 |
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| 97 |
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[15705] | 98 | sub read_infodb_file_gdbm
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| 99 | {
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| 100 | my $infodb_file_path = shift(@_);
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| 101 | my $infodb_map = shift(@_);
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| 102 |
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| 103 | open (PIPEIN, "db2txt \"$infodb_file_path\" |") || die "couldn't open pipe from db2txt\n";
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| 104 | my $infodb_line = "";
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| 105 | my $infodb_key = "";
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| 106 | my $infodb_value = "";
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| 107 | while (defined ($infodb_line = <PIPEIN>))
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| 108 | {
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| 109 | if ($infodb_line =~ /^\[([^\]]+)\]$/)
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| 110 | {
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| 111 | $infodb_key = $1;
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| 112 | }
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| 113 | elsif ($infodb_line =~ /^-{70}$/)
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| 114 | {
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| 115 | $infodb_map->{$infodb_key} = $infodb_value;
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| 116 | $infodb_key = "";
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| 117 | $infodb_value = "";
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| 118 | }
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| 119 | else
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| 120 | {
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| 121 | $infodb_value .= $infodb_line;
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| 122 | }
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| 123 | }
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| 124 |
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| 125 | close (PIPEIN);
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| 126 | }
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| 127 |
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[15699] | 128 |
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| 129 | sub write_infodb_entry_gdbm
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| 130 | {
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| 131 | my $infodb_handle = shift(@_);
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| 132 | my $infodb_key = shift(@_);
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| 133 | my $infodb_map = shift(@_);
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| 134 |
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| 135 | print $infodb_handle "[$infodb_key]\n";
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| 136 | foreach my $infodb_value_key (keys(%$infodb_map))
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| 137 | {
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| 138 | foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
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| 139 | {
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| 140 | if ($infodb_value =~ /-{70,}/)
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| 141 | {
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| 142 | # if value contains 70 or more hyphens in a row we need to escape them
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| 143 | # to prevent txt2db from treating them as a separator
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| 144 | $infodb_value =~ s/-/&\#045;/gi;
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| 145 | }
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| 146 | print $infodb_handle "<$infodb_value_key>" . $infodb_value . "\n";
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| 147 | }
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| 148 | }
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| 149 | print $infodb_handle '-' x 70, "\n";
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| 150 | }
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| 151 |
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| 152 |
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[15722] | 153 |
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| 154 | # ----------------------------------------------------------------------------------------
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| 155 | # SQLITE FUNCTIONS
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| 156 | # ----------------------------------------------------------------------------------------
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| 157 |
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| 158 | sub get_infodb_file_path_sqlite
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| 159 | {
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| 160 | my $collection_name = shift(@_);
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| 161 | my $infodb_directory_path = shift(@_);
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| 162 |
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| 163 | my $infodb_file_extension = ".db";
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| 164 | my $infodb_file_name = &util::get_dirsep_tail($collection_name) . $infodb_file_extension;
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| 165 | return &util::filename_cat($infodb_directory_path, $infodb_file_name);
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| 166 | }
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| 167 |
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| 168 |
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| 169 | sub open_infodb_write_handle_sqlite
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| 170 | {
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| 171 | my $infodb_file_path = shift(@_);
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| 172 |
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| 173 | my $sqlite3_exe = &util::filename_cat("$ENV{'GSDLHOME'}/bin/$ENV{'GSDLOS'}", "sqlite3" . &util::get_os_exe());
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| 174 | my $infodb_file_handle = undef;
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| 175 | if (!-e "$sqlite3_exe" || !open($infodb_file_handle, "| $sqlite3_exe \"$infodb_file_path\""))
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| 176 | {
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| 177 | return undef;
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| 178 | }
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| 179 |
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| 180 | print $infodb_file_handle "CREATE TABLE data (key TEXT, value TEXT, PRIMARY KEY(key));\n";
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| 181 |
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| 182 | return $infodb_file_handle;
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| 183 | }
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| 184 |
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| 185 |
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| 186 | sub write_infodb_entry_sqlite
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| 187 | {
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| 188 | my $infodb_handle = shift(@_);
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| 189 | my $infodb_key = shift(@_);
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| 190 | my $infodb_map = shift(@_);
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| 191 |
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| 192 | my $infodb_entry_value = "";
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| 193 | foreach my $infodb_value_key (keys(%$infodb_map))
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| 194 | {
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| 195 | foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
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| 196 | {
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| 197 | $infodb_entry_value .= "<$infodb_value_key>" . $infodb_value . "\n";
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| 198 | }
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| 199 | }
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| 200 |
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| 201 | # Escape any single quotes in the value
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| 202 | $infodb_entry_value =~ s/\'/\'\'/g;
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| 203 |
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| 204 | print $infodb_handle "DELETE FROM data WHERE key='" . $infodb_key . "';\n";
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| 205 | print $infodb_handle "INSERT INTO data (key, value) VALUES ('" . $infodb_key . "', '" . $infodb_entry_value . "');\n";
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| 206 | }
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| 207 |
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| 208 |
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[15699] | 209 | 1;
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