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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31 | sub read_infodb_file
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32 | {
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33 | my $infodb_file_path = shift(@_);
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34 | my $infodb_map = shift(@_);
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35 |
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36 | &read_infodb_file_gdbm($infodb_file_path, $infodb_map);
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37 | }
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38 |
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39 |
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40 | sub write_infodb_entry
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41 | {
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42 | my $infodb_handle = shift(@_);
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43 | my $infodb_key = shift(@_);
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44 | my $infodb_map = shift(@_);
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45 |
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46 | &write_infodb_entry_gdbm($infodb_handle, $infodb_key, $infodb_map);
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47 | }
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48 |
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49 |
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50 |
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51 | # ----------------------------------------------------------------------------------------
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52 | # GDBM FUNCTIONS
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53 | # ----------------------------------------------------------------------------------------
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54 |
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55 | sub read_infodb_file_gdbm
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56 | {
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57 | my $infodb_file_path = shift(@_);
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58 | my $infodb_map = shift(@_);
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59 |
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60 | open (PIPEIN, "db2txt \"$infodb_file_path\" |") || die "couldn't open pipe from db2txt\n";
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61 | my $infodb_line = "";
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62 | my $infodb_key = "";
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63 | my $infodb_value = "";
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64 | while (defined ($infodb_line = <PIPEIN>))
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65 | {
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66 | if ($infodb_line =~ /^\[([^\]]+)\]$/)
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67 | {
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68 | $infodb_key = $1;
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69 | }
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70 | elsif ($infodb_line =~ /^-{70}$/)
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71 | {
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72 | $infodb_map->{$infodb_key} = $infodb_value;
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73 | $infodb_key = "";
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74 | $infodb_value = "";
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75 | }
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76 | else
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77 | {
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78 | $infodb_value .= $infodb_line;
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79 | }
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80 | }
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81 |
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82 | close (PIPEIN);
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83 | }
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84 |
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85 |
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86 | sub write_infodb_entry_gdbm
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87 | {
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88 | my $infodb_handle = shift(@_);
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89 | my $infodb_key = shift(@_);
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90 | my $infodb_map = shift(@_);
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91 |
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92 | print $infodb_handle "[$infodb_key]\n";
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93 | foreach my $infodb_value_key (keys(%$infodb_map))
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94 | {
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95 | foreach my $infodb_value (@{$infodb_map->{$infodb_value_key}})
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96 | {
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97 | if ($infodb_value =~ /-{70,}/)
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98 | {
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99 | # if value contains 70 or more hyphens in a row we need to escape them
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100 | # to prevent txt2db from treating them as a separator
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101 | $infodb_value =~ s/-/&\#045;/gi;
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102 | }
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103 | print $infodb_handle "<$infodb_value_key>" . $infodb_value . "\n";
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104 | }
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105 | }
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106 | print $infodb_handle '-' x 70, "\n";
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107 | }
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108 |
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109 |
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110 | 1;
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