[24050] | 1 | ###########################################################################
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| 2 | #
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| 3 | # dbutil::tdb -- utility functions for writing to tdb databases. Should be
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| 4 | # hauntingly similar to GDBM utility functions.
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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 | # Copyright (C) 2011
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| 11 | #
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| 12 | # This program is free software; you can redistribute it and/or modify
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| 13 | # it under the terms of the GNU General Public License as published by
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| 14 | # the Free Software Foundation; either version 2 of the License, or
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| 15 | # (at your option) any later version.
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| 16 | #
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| 17 | # This program is distributed in the hope that it will be useful,
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| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | # GNU General Public License for more details.
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| 21 | #
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| 22 | # You should have received a copy of the GNU General Public License
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| 23 | # along with this program; if not, write to the Free Software
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| 24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 25 | #
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| 26 | ###########################################################################
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| 27 |
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| 28 | package dbutil::tdb;
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| 29 |
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| 30 | # Pragma
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| 31 | use strict;
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| 32 |
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| 33 | # Libraries/Modules
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| 34 | use dbutil::gdbmtxtgz;
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| 35 |
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| 36 | # -----------------------------------------------------------------------------
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| 37 | # TDB IMPLEMENTATION
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| 38 | # -----------------------------------------------------------------------------
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| 39 |
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| 40 | # /**
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| 41 | # */
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| 42 | sub get_tdb_executable
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| 43 | {
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| 44 | my $program = shift(@_);
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[24069] | 45 | my $program_exe = &util::filename_cat($program . &util::get_os_exe());
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[24050] | 46 | if (!-x $program_exe)
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| 47 | {
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| 48 | die('Fatal Error! File doesn\'t exist or isn\'t executable: ' . $program_exe);
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| 49 | }
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| 50 | return $program_exe;
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| 51 | }
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| 52 | # /** get_tdb_executable() **/
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| 53 |
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| 54 | # /**
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| 55 | # */
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| 56 | sub open_infodb_write_handle
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| 57 | {
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| 58 | my $infodb_file_path = shift(@_);
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| 59 | my $opt_append = shift(@_);
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| 60 |
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| 61 | my $txt2tdb_exe = &dbutil::tdb::get_tdb_executable('txt2tdb');
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| 62 |
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| 63 | my $cmd = "\"$txt2tdb_exe\"";
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| 64 | if ((defined $opt_append) && ($opt_append eq "append"))
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| 65 | {
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| 66 | $cmd .= " -append";
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| 67 | }
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| 68 | $cmd .= " \"$infodb_file_path\"";
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| 69 |
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| 70 | # we're going to pipe the key value pairs, in the appropriate format, from
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| 71 | # within the buildproc, so we create a piped handle here
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| 72 | my $infodb_file_handle = undef;
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| 73 | if(!open($infodb_file_handle, "| $cmd"))
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| 74 | {
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| 75 | print STDERR "Error: Failed to open pipe to $cmd\n";
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| 76 | print STDERR " $!\n";
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| 77 | return undef;
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| 78 | }
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| 79 |
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| 80 | binmode($infodb_file_handle,":utf8");
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| 81 |
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| 82 | return $infodb_file_handle;
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| 83 | }
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| 84 | # /** open_infodb_write_handle() **/
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| 85 |
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| 86 | # /**
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| 87 | # */
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| 88 | sub close_infodb_write_handle
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| 89 | {
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| 90 | my $infodb_handle = shift(@_);
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| 91 | close($infodb_handle);
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| 92 | }
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| 93 | # /** close_infodb_write_handle() **/
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| 94 |
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| 95 | # /**
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| 96 | # */
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| 97 | sub get_infodb_file_path
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| 98 | {
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| 99 | my $collection_name = shift(@_);
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| 100 | my $infodb_directory_path = shift(@_);
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| 101 |
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| 102 | my $infodb_file_extension = ".tdb";
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| 103 | my $infodb_file_name = &util::get_dirsep_tail($collection_name) . $infodb_file_extension;
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| 104 |
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| 105 | return &util::filename_cat($infodb_directory_path, $infodb_file_name);
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| 106 | }
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| 107 | # /** get_infodb_file_path() **/
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| 108 |
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| 109 | # /**
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| 110 | # */
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| 111 | sub read_infodb_file
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| 112 | {
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| 113 | my $infodb_file_path = shift(@_);
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| 114 | my $infodb_map = shift(@_);
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| 115 |
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| 116 | my $tdb2txt_exe = &dbutil::tdb::get_tdb_executable('tdb2txt');
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| 117 |
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| 118 | if (!open (PIPEIN, "\"$tdb2txt_exe\" \"$infodb_file_path\" |"))
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| 119 | {
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[24069] | 120 | print STDERR 'Error: Failed to open pipe to ' . $tdb2txt_exe . "\n";
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[24050] | 121 | print STDERR " $!\n";
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| 122 | return undef;
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| 123 | }
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| 124 |
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| 125 | binmode(PIPEIN,":utf8");
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| 126 |
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| 127 | my $infodb_line = "";
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| 128 | my $infodb_key = "";
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| 129 | my $infodb_value = "";
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| 130 | while (defined ($infodb_line = <PIPEIN>))
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| 131 | {
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| 132 | if ($infodb_line =~ /^\[([^\]]+)\]$/)
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| 133 | {
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| 134 | $infodb_key = $1;
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| 135 | }
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| 136 | elsif ($infodb_line =~ /^-{70}$/)
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| 137 | {
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| 138 | $infodb_map->{$infodb_key} = $infodb_value;
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| 139 | $infodb_key = "";
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| 140 | $infodb_value = "";
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| 141 | }
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| 142 | else
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| 143 | {
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| 144 | $infodb_value .= $infodb_line;
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| 145 | }
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| 146 | }
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| 147 |
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| 148 | close (PIPEIN);
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| 149 | }
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| 150 | # /** read_infodb_file() **/
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| 151 |
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| 152 | # /**
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| 153 | # */
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| 154 | sub read_infodb_keys
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| 155 | {
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| 156 | my $infodb_file_path = shift(@_);
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| 157 | my $infodb_map = shift(@_);
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| 158 |
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| 159 | my $tdbkeys_exe = &dbutil::tdb::get_tdb_executable('tdbkeys');
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| 160 |
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| 161 | if (!open (PIPEIN, "\"tdbkeys_exe\" \"$infodb_file_path\" |"))
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| 162 | {
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| 163 | die "couldn't open pipe from gdbmkeys \$infodb_file_path\"\n$!\n";
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| 164 | }
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| 165 |
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| 166 | binmode(PIPEIN,":utf8");
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| 167 |
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| 168 | my $infodb_line = "";
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| 169 | my $infodb_key = "";
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| 170 | my $infodb_value = "";
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| 171 | while (defined ($infodb_line = <PIPEIN>))
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| 172 | {
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| 173 | # remove end of line
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| 174 | chomp $infodb_line;
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| 175 |
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| 176 | $infodb_map->{$infodb_line} = 1;
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| 177 | }
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| 178 |
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| 179 | close (PIPEIN);
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| 180 | }
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| 181 | # /** read_infodb_keys() **/
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| 182 |
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| 183 | # /**
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| 184 | # */
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| 185 | sub write_infodb_entry
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| 186 | {
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| 187 | # With infodb_handle already set up, works the same as gdbm and gdbm_txtgz
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| 188 | # versions
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| 189 | &dbutil::gdbmtxtgz::write_infodb_entry(@_);
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| 190 | }
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| 191 | # /** write_infodb_entry() **/
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| 192 |
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| 193 | # /**
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| 194 | # */
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| 195 | sub write_infodb_rawentry
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| 196 | {
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| 197 | # With infodb_handle already set up, works the same as gdbm and gdbm_txtgz
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| 198 | # versions
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| 199 | &dbutil::gdbmtxtgz::write_infodb_rawentry(@_);
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| 200 | }
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| 201 | # /** write_infodb_rawentry() **/
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| 202 |
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| 203 | # /**
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| 204 | # */
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| 205 | sub set_infodb_entry
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| 206 | {
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| 207 | my $infodb_file_path = shift(@_);
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| 208 | my $infodb_key = shift(@_);
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| 209 | my $infodb_map = shift(@_);
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| 210 |
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| 211 | # Protect metadata values that go inside quotes for tdbset
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| 212 | foreach my $k (keys %$infodb_map)
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| 213 | {
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| 214 | my @escaped_v = ();
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| 215 | foreach my $v (@{$infodb_map->{$k}})
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| 216 | {
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| 217 | if ($k eq "contains")
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| 218 | {
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| 219 | # protect quotes in ".2;".3 etc
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| 220 | $v =~ s/\"/\\\"/g;
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| 221 | push(@escaped_v, $v);
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| 222 | }
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| 223 | else
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| 224 | {
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| 225 | my $ev = &ghtml::unescape_html($v);
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| 226 | $ev =~ s/\"/\\\"/g;
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| 227 | push(@escaped_v, $ev);
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| 228 | }
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| 229 | }
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| 230 | $infodb_map->{$k} = \@escaped_v;
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| 231 | }
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| 232 |
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| 233 | # Generate the record string
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| 234 | my $serialized_infodb_map = &dbutil::convert_infodb_hash_to_string($infodb_map);
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| 235 | ## print STDERR "**** ser dr\n$serialized_infodb_map\n\n\n";
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| 236 |
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| 237 | # Store it into GDBM
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| 238 | my $tdbset_exe = &dbutil::tdb::get_tdb_executable('tdbset');
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| 239 | my $cmd = "\"tdbset_exe\" \"$infodb_file_path\" \"$infodb_key\" \"$serialized_infodb_map\"";
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| 240 | my $status = system($cmd);
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| 241 |
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| 242 | return $status;
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| 243 | }
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| 244 | # /** set_infodb_entry() **/
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| 245 |
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| 246 | # /**
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| 247 | # */
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| 248 | sub delete_infodb_entry
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| 249 | {
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| 250 | # With infodb_handle already set up, works the same as gdbm and gdbm_txtgz
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| 251 | # versions
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| 252 | &dbutil::gdbmtxtgz::delete_infodb_entry(@_);
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| 253 | }
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| 254 | # /** delete_infodb_entry() **/
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| 255 |
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| 256 | 1;
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