1 | # This module stores information about the archives. At the moment
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2 | # this information just consists of the file name (relative to the
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3 | # directory the archives information file is in) and its OID.
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4 |
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5 | # This module assumes there is a one to one correspondance between
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6 | # a file in the archives directory and an OID.
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7 |
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8 |
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9 | package arcinfo;
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10 |
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11 | sub new {
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12 | my ($class) = @_;
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13 | my $self = {'info'=>{}};
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14 |
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15 | return bless $self, $class;
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16 | }
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17 |
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18 | sub load_info {
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19 | my $self = shift (@_);
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20 | my ($filename) = @_;
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21 |
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22 | $self->{'info'} = {};
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23 |
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24 | if (-e $filename) {
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25 | open (INFILE, $filename) ||
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26 | die "arcinfo::load_info couldn't read $filename\n";
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27 |
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28 | my ($line, @line);
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29 | while (defined ($line = <INFILE>)) {
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30 | $line =~ s/\cM|\cJ//g; # remove end-of-line characters
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31 | @line = split ("\t", $line); # filename,
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32 | if (scalar(@line) >= 2) {
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33 | $self->add_info ($line[0], $line[1]);
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34 | }
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35 | }
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36 |
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37 | close (INFILE);
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38 | }
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39 | }
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40 |
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41 | sub save_info {
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42 | my $self = shift (@_);
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43 | my ($filename) = @_;
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44 |
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45 | my ($OID);
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46 |
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47 | open (OUTFILE, ">$filename") ||
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48 | die "arcinfo::save_info couldn't write $filename\n";
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49 |
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50 | foreach $OID (keys(%{$self->{'info'}})) {
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51 | my $info = $self->get_info($OID);
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52 | if (defined $info) {
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53 | print OUTFILE "$OID\t", join("\t", @$info), "\n";
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54 | }
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55 | }
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56 |
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57 | close (OUTFILE);
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58 | }
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59 |
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60 | sub add_info {
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61 | my $self = shift (@_);
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62 | my ($OID, $doc_file) = @_;
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63 |
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64 | $self->{'info'}->{$OID} = [$doc_file];
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65 | }
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66 |
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67 | # returns a list of the form [[OID, doc_file], ...]
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68 | sub get_OID_list {
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69 | my $self = shift (@_);
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70 |
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71 | my ($OID);
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72 | my @list = ();
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73 |
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74 | foreach $OID (sort(keys(%{$self->{'info'}}))) {
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75 | push (@list, [$OID, $self->{'info'}->{$OID}->[0]]);
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76 | }
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77 |
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78 | return \@list;
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79 | }
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80 |
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81 | # returns a list of the form [[doc_file, OID], ...]
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82 | sub get_file_list {
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83 | my $self = shift (@_);
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84 |
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85 | my ($OID);
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86 | my @list = ();
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87 |
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88 | foreach $OID (sort(keys(%{$self->{'info'}}))) {
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89 | push (@list, [$self->{'info'}->{$OID}->[0], $OID]);
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90 | }
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91 |
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92 | return \@list;
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93 | }
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94 |
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95 |
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96 | # returns a list of the form [doc_file]
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97 | sub get_info {
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98 | my $self = shift (@_);
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99 | my ($OID) = @_;
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100 |
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101 | if (defined $self->{'info'}->{$OID}) {
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102 | return $self->{'info'}->{$OID};
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103 | }
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104 |
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105 | return undef;
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106 | }
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107 |
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108 |
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109 | 1;
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110 |
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