1 | ###########################################################################
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2 | #
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3 | # ProCitePlug.pm -- A plugin for (exported) ProCite databases
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4 | #
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5 | # A component of the Greenstone digital library software
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6 | # from the New Zealand Digital Library Project at the
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7 | # University of Waikato, New Zealand.
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8 | #
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9 | # Copyright 1999-2004 New Zealand Digital Library Project
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10 | #
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11 | # This program is free software; you can redistribute it and/or modify
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12 | # it under the terms of the GNU General Public License as published by
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13 | # the Free Software Foundation; either version 2 of the License, or
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14 | # (at your option) any later version.
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15 | #
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16 | # This program is distributed in the hope that it will be useful,
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17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | # GNU General Public License for more details.
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20 | #
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21 | # You should have received a copy of the GNU General Public License
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22 | # along with this program; if not, write to the Free Software
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23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 | #
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25 | ###########################################################################
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26 |
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27 | package ProCitePlug;
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28 |
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29 |
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30 | use multiread;
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31 | use SplitPlug;
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32 |
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33 |
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34 | # ProCitePlug is a sub-class of SplitPlug
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35 | sub BEGIN {
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36 | @ISA = ('SplitPlug');
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37 | }
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38 |
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39 |
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40 | my $arguments =
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41 | [ { 'name' => "process_exp",
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42 | 'desc' => "{BasPlug.process_exp}",
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43 | 'type' => "regexp",
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44 | 'reqd' => "no",
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45 | 'deft' => &get_default_process_exp() },
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46 | { 'name' => "split_exp",
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47 | 'desc' => "{SplitPlug.split_exp}",
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48 | 'type' => "regexp",
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49 | 'deft' => &get_default_split_exp(),
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50 | 'reqd' => "no" }
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51 | ];
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52 |
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53 | my $options = { 'name' => "ProCitePlug",
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54 | 'desc' => "{ProCitePlug.desc}",
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55 | 'abstract' => "no",
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56 | 'inherits' => "yes",
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57 | 'args' => $arguments };
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58 |
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59 |
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60 | # This plugin processes exported ProCite files with the suffix ".txt"
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61 | sub get_default_process_exp
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62 | {
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63 | return q^(?i)(\.txt)$^;
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64 | }
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65 |
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66 |
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67 | # This plugin splits the input text at every line
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68 | sub get_default_split_exp
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69 | {
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70 | return q^\n^;
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71 | }
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72 |
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73 |
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74 | sub new
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75 | {
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76 | my ($class) = shift (@_);
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77 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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78 | push(@$pluginlist, $class);
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79 |
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80 | if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
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81 | if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
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82 |
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83 | my $self = (defined $hashArgOptLists)? new SplitPlug($pluginlist,$inputargs,$hashArgOptLists): new SplitPlug($pluginlist,$inputargs);
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84 |
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85 | return bless $self, $class;
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86 | }
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87 |
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88 |
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89 | my %crazy_workform_mapping =
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90 | ( "A", "Book, Long Form",
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91 | "B", "Book, Short Form",
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92 | "C", "Journal, Long Form",
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93 | "D", "Journal, Short Form",
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94 | "E", "Report",
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95 | "F", "Newspaper",
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96 | "G", "Dissertation",
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97 | "H", "Trade Catalog",
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98 | "I", "Letter (Correspondence)",
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99 | "J", "Manuscript",
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100 | "K", "Conference Proceedings",
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101 | "L", "Map",
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102 | "M", "Music Score",
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103 | "N", "Sound Recording",
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104 | "O", "Motion Picture",
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105 | "P", "Audiovisual Material",
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106 | "Q", "Video Recording",
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107 | "R", "Art Work",
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108 | "S", "Computer Program",
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109 | "T", "Data File" );
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110 |
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111 |
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112 | sub read_file
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113 | {
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114 | my $self = shift (@_);
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115 | my ($filename, $encoding, $language, $textref) = @_;
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116 |
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117 | # Store the workform definitions for this file
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118 | my %workform_definitions = ();
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119 |
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120 | # Read the contents of the file into $textref
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121 | open(PROCITE_FILE, "<$filename");
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122 | my $reader = new multiread();
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123 | $reader->set_handle ('ProCitePlug::PROCITE_FILE');
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124 | $reader->set_encoding ($encoding);
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125 | $reader->read_file ($textref);
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126 | close(PROCITE_FILE);
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127 |
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128 | # Read the workform definitions at the start of the file
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129 | while ($$textref =~ /^\<Workform Definition\>/) {
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130 | # Remove the workform definition line so it is not processed later as a record
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131 | $$textref =~ s/^\<Workform Definition\>(.*)\n//;
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132 | my $workform_definition = $1;
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133 |
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134 | # Parse the workform definitions and store them for later
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135 | $workform_definition =~ s/^\"([^\"]*)\",//;
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136 | my $workform_name = $1;
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137 |
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138 | my @workform_values;
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139 | while ($workform_definition !~ /^$/) {
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140 | $workform_definition =~ s/^\"([^\"]*)\",?//;
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141 | my $workform_field = $1;
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142 | push(@workform_values, $workform_field);
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143 | }
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144 |
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145 | # Remember this workform definition for when we're reading the records
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146 | $workform_definitions{$workform_name} = \@workform_values;
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147 | }
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148 |
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149 | $self->{'workform_definitions'}->{$filename} = \%workform_definitions;
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150 | }
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151 |
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152 |
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153 | sub process
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154 | {
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155 | my $self = shift (@_);
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156 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
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157 |
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158 | my $outhandle = $self->{'outhandle'};
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159 | my $filename = &util::filename_cat($base_dir, $file);
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160 |
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161 | # Report that we're processing the file
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162 | print STDERR "<Processing n='$file' p='ProCitePlug'>\n" if ($gli);
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163 | print $outhandle "ProCitePlug: processing $file\n"
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164 | if ($self->{'verbosity'}) > 1;
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165 |
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166 | # Build up an HTML view of the record for easy display at run-time
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167 | my $html_record = "";
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168 |
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169 | # Read the record's workform indicator and record number
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170 | $$textref =~ s/^\"([^\"]*)\",\"([^\"]*)\",//;
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171 | my $workform_indicator = $1;
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172 | my $recordnum = $2;
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173 |
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174 | # If necessary, map the workform indicator into something useful
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175 | if ($crazy_workform_mapping{$workform_indicator}) {
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176 | $workform_indicator = $crazy_workform_mapping{$workform_indicator};
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177 | }
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178 |
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179 | # Check we know about the workform of this record
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180 | my %workform_definitions = %{$self->{'workform_definitions'}->{$filename}};
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181 | if (!$workform_definitions{$workform_indicator}) {
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182 | print STDERR "Unknown workform!\n";
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183 | return 0;
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184 | }
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185 |
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186 | # Store the full record as the document text
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187 | $doc_obj->add_utf8_text($cursection, $$textref);
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188 |
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189 | # Store workform and record number as metadata
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190 | $doc_obj->add_utf8_metadata($cursection, "pc.Workform", $workform_indicator);
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191 | $doc_obj->add_utf8_metadata($cursection, "pc.RecordNumber", $recordnum);
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192 |
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193 | # Store FileFormat metadata
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194 | $doc_obj->add_metadata($cursection, "FileFormat", "ProCite");
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195 |
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196 | $html_record .= "<tr><td valign=top><b>Record Number: </b></td><td valign=top>$recordnum</td></tr>";
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197 |
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198 | my @workform_values = @{$workform_definitions{$workform_indicator}};
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199 |
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200 | # Read each field (surrounded by quotes) of the record
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201 | my $fieldnum = 0;
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202 | while ($$textref !~ /^$/) {
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203 | $$textref =~ s/^\"([^\"]*)\",?//;
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204 | my $field_value_raw = $1;
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205 |
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206 | # Add non-empty metadata values to the document
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207 | unless ($field_value_raw eq "") {
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208 | # Add the display name of the metadata field for format statement convenience
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209 | my $field_name = $workform_values[$fieldnum];
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210 | unless ($field_name eq "---") {
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211 | my $meta_name = "pc.Field" . ($fieldnum + 1) . "Name";
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212 | $doc_obj->add_utf8_metadata($cursection, $meta_name, $field_name);
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213 | }
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214 |
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215 | $html_record .= "<tr><td valign=top><b>$field_name: </b></td><td valign=top>";
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216 |
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217 | # Multiple metadata values are separated with "//"
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218 | foreach $field_value (split(/\/\//, $field_value_raw)) {
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219 | my $meta_name = "pc.Field" . ($fieldnum + 1) . "Value";
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220 | $doc_obj->add_utf8_metadata($cursection, $meta_name, $field_value);
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221 |
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222 | $html_record .= $field_value . "<br>";
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223 | }
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224 |
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225 | $html_record .= "</td></tr>";
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226 | }
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227 |
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228 | $fieldnum++;
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229 | }
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230 |
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231 | # Store HTML view of record as metadata
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232 | $doc_obj->add_utf8_metadata($cursection, "HTMLDisplay", $html_record);
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233 |
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234 | # Record was processed successfully
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235 | return 1;
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236 | }
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237 |
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238 |
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239 | 1;
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