1 | ###########################################################################
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2 | #
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3 | # HathiTrustMETSPlugin.pm -- plugin for sets of HathiTrust METS OCR'd
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4 | # text that make up a document
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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) 1999 New Zealand Digital Library Project
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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 | # HathiTrustMETSPlugin
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29 | # processes HathiTrust METS files that are accompanied with page-by-page
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30 | # OCR'd txt files
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31 | #
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32 | # All the supplemetary text files should be in a subfolder of the same
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33 | # name as the METS file
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34 | #
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35 | # As usual, running
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36 | # 'perl -S pluginfo.pl HathiTrustMETSPlugin' will list all the options.
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37 |
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38 |
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39 | package HathiTrustMETSPlugin;
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40 |
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41 | use Encode;
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42 | use ReadXMLFile;
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43 | use ReadTextFile;
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44 | # We don't currently work with the scanned image from HathiTrust METS
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45 | # but leave it in for future proofing
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46 | use ImageConverter;
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47 | use MetadataRead;
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48 |
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49 | use JSON;
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50 |
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51 | use strict;
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52 | no strict 'refs'; # allow filehandles to be variables and viceversa
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53 |
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54 | sub BEGIN {
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55 | @HathiTrustMETSPlugin::ISA = ('MetadataRead', 'ReadXMLFile', 'ReadTextFile', 'ImageConverter'
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56 | );
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57 | }
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58 |
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59 | # One day HathiTrust might give more than page structure
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60 | my $gs2_type_list =
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61 | [
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62 | # { 'name' => "auto",
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63 | # 'desc' => "{PagedImagePlugin.documenttype.auto2}" },
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64 | # { 'name' => "paged",
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65 | # 'desc' => "{PagedImagePlugin.documenttype.paged2}" },
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66 | { 'name' => "hierarchy",
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67 | 'desc' => "{PagedImagePlugin.documenttype.hierarchy}" }
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68 | ];
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69 |
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70 | my $gs3_type_list =
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71 | [
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72 | # { 'name' => "auto",
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73 | # 'desc' => "{PagedImagePlugin.documenttype.auto3}" },
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74 | # { 'name' => "paged",
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75 | # 'desc' => "{PagedImagePlugin.documenttype.paged3}" },
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76 | { 'name' => "hierarchy",
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77 | 'desc' => "{PagedImagePlugin.documenttype.hierarchy}" }
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78 | # { 'name' => "pagedhierarchy",
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79 | # 'desc' => "{PagedImagePlugin.documenttype.pagedhierarchy}" }
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80 | ];
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81 |
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82 | my $arguments =
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83 | [ { 'name' => "process_exp",
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84 | 'desc' => "{BaseImporter.process_exp}",
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85 | 'type' => "string",
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86 | 'deft' => &get_default_process_exp(),
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87 | 'reqd' => "no" },
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88 | { 'name' => "title_sub",
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89 | 'desc' => "{HTMLPlugin.title_sub}",
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90 | 'type' => "string",
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91 | 'deft' => "" },
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92 | { 'name' => "headerpage",
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93 | 'desc' => "{HathiTrustMETSPlugin.headerpage}",
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94 | 'type' => "flag",
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95 | 'reqd' => "no" },
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96 | {'name' => "processing_tmp_files",
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97 | 'desc' => "{BaseImporter.processing_tmp_files}",
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98 | 'type' => "flag",
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99 | 'hiddengli' => "yes"}
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100 | ];
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101 |
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102 | my $doc_type_opt = { 'name' => "documenttype",
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103 | 'desc' => "{PagedImagePlugin.documenttype}",
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104 | 'type' => "enum",
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105 | 'deft' => "hierarchy",
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106 | 'reqd' => "no" };
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107 |
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108 | my $options = { 'name' => "HathiTrustMETSPlugin",
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109 | 'desc' => "{HathiTrustMETSPlugin.desc}",
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110 | 'abstract' => "no",
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111 | 'inherits' => "yes",
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112 | 'args' => $arguments };
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113 |
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114 | sub new {
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115 | my ($class) = shift (@_);
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116 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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117 | push(@$pluginlist, $class);
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118 |
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119 | push(@{$hashArgOptLists->{"OptList"}},$options);
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120 |
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121 | my $imc_self = new ImageConverter($pluginlist, $inputargs, $hashArgOptLists);
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122 |
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123 | # we can use this plugin to check gs3 version
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124 | if ($imc_self->{'gs_version'} eq "3") {
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125 | $doc_type_opt->{'list'} = $gs3_type_list;
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126 | }
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127 | else {
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128 | $doc_type_opt->{'list'} = $gs2_type_list;
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129 | }
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130 | push(@$arguments,$doc_type_opt);
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131 | # now we add the args to the list for parsing
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132 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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133 |
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134 | my $rtf_self = new ReadTextFile($pluginlist, $inputargs, $hashArgOptLists, 1);
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135 | my $rxf_self = new ReadXMLFile($pluginlist, $inputargs, $hashArgOptLists);
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136 |
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137 | my $self = BaseImporter::merge_inheritance($imc_self,$rtf_self,$rxf_self);
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138 |
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139 | # Update $self used by XML::Parser so it finds callback functions
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140 | # such as start_document here and not in ReadXMLFile (which is what
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141 | # $self was when new XML::Parser was done)
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142 | #
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143 | # If the $self returned by this constructor is the same as the one
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144 | # used in ReadXMLFile (e.g. in the GreenstoneXMLPlugin) then this step isn't necessary
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145 | #
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146 | # Consider embedding this type of assignment into merge_inheritance
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147 | # to help catch all cases?
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148 |
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149 | $rxf_self->{'parser'}->{'PluginObj'} = $self;
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150 |
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151 | return bless $self, $class;
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152 | }
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153 |
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154 |
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155 | sub init {
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156 | my $self = shift (@_);
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157 | my ($verbosity, $outhandle, $failhandle) = @_;
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158 |
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159 | $self->SUPER::init(@_);
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160 | $self->ImageConverter::init();
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161 | }
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162 |
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163 | sub begin {
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164 | my $self = shift (@_);
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165 | my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
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166 |
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167 | $self->SUPER::begin(@_);
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168 | $self->ImageConverter::begin(@_);
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169 | }
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170 |
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171 | sub get_default_process_exp {
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172 | my $self = shift (@_);
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173 |
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174 | return q^\.mets.xml$^;
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175 | }
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176 |
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177 | sub get_doctype {
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178 | my $self = shift(@_);
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179 |
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180 | return "METS:mets";
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181 | }
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182 |
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183 |
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184 | # want to use BaseImporter's version of this, not ReadXMLFile's
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185 | sub can_process_this_file {
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186 | my $self = shift(@_);
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187 | return $self->BaseImporter::can_process_this_file(@_);
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188 | }
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189 |
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190 | # instead of a block exp, now we scan the file and record all text and img files mentioned there for blocking.
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191 | sub store_block_files
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192 | {
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193 | my $self = shift (@_);
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194 | my ($filename_full_path, $block_hash) = @_;
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195 |
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196 | # do we need to do this?
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197 | # does BOM interfere just with XML parsing? In that case don't need it here
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198 | # if we do it here, we are modifying the file before we have worked out if
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199 | # its new or not, so it will always be reimported.
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200 | #$self->tidy_item_file($filename_full_path);
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201 |
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202 | my ($dir, $file) = $filename_full_path =~ /^(.*?)([^\/\\]*)$/;
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203 |
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204 | # do something
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205 | $self->scan_xml_for_files_to_block($filename_full_path, $dir, $block_hash);
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206 |
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207 | }
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208 |
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209 | # we want to use BaseImporter's read, not ReadXMLFile's
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210 | sub read
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211 | {
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212 | my $self = shift (@_);
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213 |
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214 | $self->BaseImporter::read(@_);
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215 | }
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216 |
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217 |
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218 |
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219 | sub read_into_doc_obj {
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220 | my $self = shift (@_);
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221 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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222 | my $outhandle = $self->{'outhandle'};
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223 | my $verbosity = $self->{'verbosity'};
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224 |
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225 | my ($filename_full_path, $filename_no_path) = &util::get_full_filenames($base_dir, $file);
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226 |
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227 | print $outhandle "HathiTrustMETSPlugin processing \"$filename_full_path\"\n"
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228 | if $verbosity > 1;
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229 | print STDERR "<Processing n='$file' p='HathiTrustMETSPlugin'>\n" if ($gli);
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230 |
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231 | ## $self->{'MaxImageWidth'} = 0;
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232 | ## $self->{'MaxImageHeight'} = 0;
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233 |
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234 |
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235 | ##$self->tidy_item_file($filename_full_path);
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236 |
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237 | # careful checking needed here!! are we using local xml handlers or super ones
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238 | $self->ReadXMLFile::read($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli);
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239 | my $doc_obj = $self->{'doc_obj'};
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240 |
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241 |
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242 | my $section = $doc_obj->get_top_section();
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243 |
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244 | $doc_obj->add_utf8_metadata($section, "Plugin", "$self->{'plugin_type'}");
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245 | $doc_obj->add_metadata($section, "FileFormat", "HathiTrustMETS");
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246 |
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247 | # include any metadata passed in from previous plugins
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248 | # note that this metadata is associated with the top level section
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249 | $self->add_associated_files($doc_obj, $filename_full_path);
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250 | $self->extra_metadata ($doc_obj, $section, $metadata);
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251 | $self->auto_extract_metadata ($doc_obj);
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252 | $self->plugin_specific_process($base_dir, $file, $doc_obj, $gli);
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253 | # if we haven't found any Title so far, assign one
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254 | $self->title_fallback($doc_obj,$section,$filename_no_path);
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255 |
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256 | $self->add_OID($doc_obj);
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257 | return (1,$doc_obj);
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258 | }
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259 |
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260 |
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261 | sub parse_aux_json_metadata {
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262 | my $self = shift(@_);
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263 | my ($base_dir, $file, $doc_obj, $gli) = @_;
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264 |
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265 | my ($filename_full_path, $filename_no_path) = &util::get_full_filenames($base_dir, $file);
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266 |
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267 | my $topsection = $doc_obj->get_top_section();
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268 |
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269 | my $json_metadata_filename = $filename_full_path;
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270 | $json_metadata_filename =~ s/\.mets.xml$/.json/;
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271 |
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272 | my $json_text = "";
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273 | $self->ReadTextFile::read_file($json_metadata_filename,"utf8",undef,\$json_text);
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274 |
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275 | my $json_rec = decode_json $json_text;
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276 | my $records = $json_rec->{'records'};
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277 | my @keys = keys %{$records};
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278 |
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279 | my $key = shift @keys; # there should only be one
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280 | my $record = $records->{$key};
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281 |
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282 | my @md_fields = ( "recordURL", "titles", "isbns", "issns", "oclcs", "lccns", "publishDates" );
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283 |
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284 | foreach my $md_field (@md_fields) {
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285 | my $value_array = $record->{$md_field};
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286 |
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287 | my $md_name = $md_field;
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288 | $md_name =~ s/s$//;
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289 |
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290 | foreach my $md_value (@$value_array) {
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291 |
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292 | if ($md_name eq "title") {
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293 | $doc_obj->set_utf8_metadata_element ($topsection, "Title", $md_value);
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294 | $doc_obj->set_utf8_metadata_element ($topsection, "dc.Title", $md_value);
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295 | }
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296 | else {
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297 | $doc_obj->set_utf8_metadata_element ($topsection, $md_name, $md_value);
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298 | }
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299 | }
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300 | }
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301 |
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302 | my $htid = $json_rec->{'items'}->[0]->{'htid'};
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303 | my $docName = $htid;
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304 | my $docNameIE = $htid;
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305 | $docNameIE =~ s/^.*?\.//;
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306 |
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307 | $doc_obj->set_utf8_metadata_element ($topsection, "docName", $docName);
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308 | $doc_obj->set_utf8_metadata_element ($topsection, "docNameIE", $docNameIE);
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309 |
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310 | }
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311 |
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312 |
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313 | # override this for an inheriting plugin to add extra metadata etc
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314 | sub plugin_specific_process {
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315 | my $self = shift(@_);
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316 | my ($base_dir, $file, $doc_obj, $gli) = @_;
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317 |
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318 | $self->parse_aux_json_metadata($base_dir,$file,$doc_obj,$gli);
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319 | }
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320 |
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321 | # sub tidy_item_file {
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322 | # ... see PagedImagePlugin
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323 | # }
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324 |
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325 | # sub rotate_image {
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326 | # ... see PagedImagePlugin
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327 | # }
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328 |
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329 | # sub process_image {
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330 | # ... see PagedImagePlugin
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331 | # }
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332 |
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333 |
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334 |
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335 | sub xml_start_tag {
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336 | my $self = shift(@_);
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337 | my ($expat, $element) = @_;
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338 | $self->{'element'} = $element;
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339 |
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340 | my $doc_obj = $self->{'doc_obj'};
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341 | if ($element eq "METS:mets") {
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342 | $self->{'current_section'} = $doc_obj->get_top_section();
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343 | # } elsif ($element eq "PageGroup" || $element eq "Page") {
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344 | ## if ($element eq "PageGroup") {
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345 | ## $self->{'has_internal_structure'} = 1;
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346 | }
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347 | elsif (($element eq "METS:FLocat") && ($_{'xlink:href'} =~ m/\.txt$/)) {
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348 | # e.g. <METS:FLocat LOCTYPE="OTHER" OTHERLOCTYPE="SYSTEM" xlink:href="00000000.txt"/>
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349 |
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350 | # create a new section as a child
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351 | $self->{'current_section'} = $doc_obj->insert_section($doc_obj->get_end_child($self->{'current_section'}));
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352 | $self->{'num_pages'}++;
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353 | # assign pagenum as ... what?? => use page sequence number
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354 | my $txtfile = $_{'xlink:href'};
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355 | my ($pagenum) = ($txtfile =~ m/^(\d+)/);
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356 |
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357 | if (defined $pagenum) {
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358 | my $pagenum_int = int($pagenum);
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359 | $doc_obj->set_utf8_metadata_element($self->{'current_section'}, "Title", "Page $pagenum_int");
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360 | }
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361 | ## my ($imgfile) = $_{'imgfile'};
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362 | ## if (defined $imgfile) {
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363 | ## # *****
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364 | ## # What about support for rotate image (e.g. old ':r' notation)?
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365 | ## $self->process_image($self->{'xml_file_dir'}.$imgfile, $imgfile, $doc_obj, $self->{'current_section'});
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366 | ## }
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367 |
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368 | ## my ($txtfile) = $_{'txtfile'};
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369 | if (defined($txtfile)&& $txtfile ne "") {
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370 | my $full_txt_filename = &FileUtils::filenameConcatenate($self->{'xml_file_dir'},$txtfile);
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371 | $self->process_text ($full_txt_filename, $txtfile, $doc_obj, $self->{'current_section'});
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372 | } else {
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373 | $self->add_dummy_text($doc_obj, $self->{'current_section'});
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374 | }
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375 | }
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376 | ## elsif ($element eq "Metadata") {
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377 | ## $self->{'metadata_name'} = $_{'name'};
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378 | ## }
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379 | }
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380 |
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381 | sub xml_end_tag {
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382 | my $self = shift(@_);
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383 | my ($expat, $element) = @_;
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384 |
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385 | my $doc_obj = $self->{'doc_obj'};
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386 | ## if ($element eq "Page" || $element eq "PageGroup") {
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387 | if (($element eq "METS:FLocat") && ($_{'xlink:href'} =~ m/\.txt$/)) {
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388 | # if Title hasn't been assigned, set PageNum as Title
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389 | if (!defined $doc_obj->get_metadata_element ($self->{'current_section'}, "Title") && defined $doc_obj->get_metadata_element ($self->{'current_section'}, "PageNum" )) {
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390 | $doc_obj->add_utf8_metadata ($self->{'current_section'}, "Title", $doc_obj->get_metadata_element ($self->{'current_section'}, "PageNum" ));
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391 | }
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392 | # move the current section back to the parent
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393 | $self->{'current_section'} = $doc_obj->get_parent_section($self->{'current_section'});
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394 | } elsif ($element eq "Metadata") {
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395 |
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396 | # text read in by XML::Parser is in Perl's binary byte value
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397 | # form ... need to explicitly make it UTF-8
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398 | my $meta_name = decode("utf-8",$self->{'metadata_name'});
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399 | my $metadata_value = decode("utf-8",$self->{'metadata_value'});
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400 |
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401 | if ($meta_name =~ /\./) {
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402 | $meta_name = "ex.$meta_name";
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403 | }
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404 |
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405 | $doc_obj->add_utf8_metadata ($self->{'current_section'}, $meta_name, $metadata_value);
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406 | $self->{'metadata_name'} = "";
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407 | $self->{'metadata_value'} = "";
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408 |
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409 | }
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410 | # otherwise we ignore the end tag
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411 | }
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412 |
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413 |
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414 | sub xml_text {
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415 | my $self = shift(@_);
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416 | my ($expat) = @_;
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417 |
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418 | if ($self->{'element'} eq "Metadata" && $self->{'metadata_name'}) {
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419 | $self->{'metadata_value'} .= $_;
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420 | }
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421 | }
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422 |
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423 | sub xml_doctype {
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424 | }
|
---|
425 |
|
---|
426 | sub open_document {
|
---|
427 | my $self = shift(@_);
|
---|
428 |
|
---|
429 | # create a new document
|
---|
430 | $self->{'doc_obj'} = new doc ($self->{'filename'}, "indexed_doc", $self->{'file_rename_method'});
|
---|
431 | # TODO is file filenmae_no_path??
|
---|
432 | $self->set_initial_doc_fields($self->{'doc_obj'}, $self->{'filename'}, $self->{'processor'}, $self->{'metadata'});
|
---|
433 |
|
---|
434 | ## my ($dir, $file) = $self->{'filename'} =~ /^(.*?)([^\/\\]*)$/;
|
---|
435 | my ($dir, $file_ext) = $self->{'filename'} =~ /^(.*?)(\.mets\.xml)$/;
|
---|
436 |
|
---|
437 | $self->{'xml_file_dir'} = $dir;
|
---|
438 | $self->{'num_pages'} = 0;
|
---|
439 | ## $self->{'has_internal_structure'} = 0;
|
---|
440 |
|
---|
441 | }
|
---|
442 |
|
---|
443 | sub close_document {
|
---|
444 | my $self = shift(@_);
|
---|
445 | my $doc_obj = $self->{'doc_obj'};
|
---|
446 |
|
---|
447 | my $topsection = $doc_obj->get_top_section();
|
---|
448 |
|
---|
449 | # add numpages metadata
|
---|
450 | $doc_obj->set_utf8_metadata_element ($topsection, 'NumPages', $self->{'num_pages'}); # ##### !!!!
|
---|
451 |
|
---|
452 | # set the document type
|
---|
453 | my $final_doc_type = "";
|
---|
454 | ## if ($self->{'documenttype'} eq "auto") {
|
---|
455 | ### if ($self->{'has_internal_structure'}) {
|
---|
456 | ### if ($self->{'gs_version'} eq "3") {
|
---|
457 | ### $final_doc_type = "pagedhierarchy";
|
---|
458 | ### }
|
---|
459 | ### else {
|
---|
460 | ### $final_doc_type = "hierarchy";
|
---|
461 | ### }
|
---|
462 | ### } else {
|
---|
463 | ### $final_doc_type = "paged";
|
---|
464 | ### }
|
---|
465 | ### } else {
|
---|
466 | ## # set to what doc type option was set to
|
---|
467 | ## $final_doc_type = $self->{'documenttype'};
|
---|
468 | ## }
|
---|
469 | # $doc_obj->set_utf8_metadata_element ($topsection, "gsdlthistype", $final_doc_type); # #### !!!!!
|
---|
470 | ### capiatalisation????
|
---|
471 | # if ($self->{'documenttype'} eq 'paged') {
|
---|
472 | # set the gsdlthistype metadata to Paged - this ensures this document will
|
---|
473 | # be treated as a Paged doc, even if Titles are not numeric
|
---|
474 | # $doc_obj->set_utf8_metadata_element ($topsection, "gsdlthistype", "Paged");
|
---|
475 | # } else {
|
---|
476 | # $doc_obj->set_utf8_metadata_element ($topsection, "gsdlthistype", "Hierarchy");
|
---|
477 | # }
|
---|
478 |
|
---|
479 | ## $doc_obj->set_utf8_metadata_element($topsection,"MaxImageWidth",$self->{'MaxImageWidth'});
|
---|
480 | ## $doc_obj->set_utf8_metadata_element($topsection,"MaxImageHeight",$self->{'MaxImageHeight'});
|
---|
481 | ## $self->{'MaxImageWidth'} = undef;
|
---|
482 | ## $self->{'MaxImageHeight'} = undef;
|
---|
483 |
|
---|
484 | }
|
---|
485 |
|
---|
486 |
|
---|
487 | sub set_initial_doc_fields {
|
---|
488 | my $self = shift(@_);
|
---|
489 | my ($doc_obj, $filename_full_path, $processor, $metadata) = @_;
|
---|
490 |
|
---|
491 | my $topsection = $doc_obj->get_top_section();
|
---|
492 |
|
---|
493 | my $plugin_filename_encoding = $self->{'filename_encoding'};
|
---|
494 | my $filename_encoding = $self->deduce_filename_encoding($filename_full_path,$metadata,$plugin_filename_encoding);
|
---|
495 | $self->set_Source_metadata($doc_obj, $filename_full_path, $filename_encoding);
|
---|
496 |
|
---|
497 | # if we want a header page, we need to add some text into the top section, otherwise this section will become invisible
|
---|
498 | if ($self->{'headerpage'}) {
|
---|
499 | $self->add_dummy_text($doc_obj, $topsection);
|
---|
500 | }
|
---|
501 | }
|
---|
502 |
|
---|
503 | sub scan_xml_for_files_to_block
|
---|
504 | {
|
---|
505 | my $self = shift (@_);
|
---|
506 | my ($filename_full_path, $dir, $block_hash) = @_;
|
---|
507 |
|
---|
508 | my ($file_root) = ($filename_full_path =~ m/^(.*)\.mets\.xml$/);
|
---|
509 |
|
---|
510 | $self->block_raw_filename($block_hash,"$file_root.zip");
|
---|
511 | $self->block_raw_filename($block_hash,"$file_root.json");
|
---|
512 |
|
---|
513 | my $page_dir = $file_root;
|
---|
514 |
|
---|
515 | open (METSFILE, $filename_full_path) || die "couldn't open $filename_full_path to work out which files to block\n";
|
---|
516 | my $line = "";
|
---|
517 | while (defined ($line = <METSFILE>)) {
|
---|
518 | next unless $line =~ /\w/;
|
---|
519 |
|
---|
520 | # Exaple of what we are looking for
|
---|
521 | # <METS:FLocat LOCTYPE="OTHER" OTHERLOCTYPE="SYSTEM" xlink:href="00000000.txt"/>
|
---|
522 |
|
---|
523 | if ($line =~ /xlink:href=\"([^\"]+)\"/) {
|
---|
524 | my $txt_filename = &FileUtils::filenameConcatenate($page_dir,$1);
|
---|
525 | my $topics_filename = $txt_filename . ".topics";
|
---|
526 | $self->block_raw_filename($block_hash,$txt_filename);
|
---|
527 | $self->block_raw_filename($block_hash,$topics_filename);
|
---|
528 | }
|
---|
529 | }
|
---|
530 | close METSFILE;
|
---|
531 |
|
---|
532 | }
|
---|
533 |
|
---|
534 |
|
---|
535 | sub process_text {
|
---|
536 | my $self = shift (@_);
|
---|
537 | my ($filename_full_path, $file, $doc_obj, $cursection) = @_;
|
---|
538 |
|
---|
539 | # check that the text file exists!!
|
---|
540 | if (!-f $filename_full_path) {
|
---|
541 | print "HathiTrustMETSPlugin: ERROR: File $filename_full_path does not exist, skipping\n";
|
---|
542 | return 0;
|
---|
543 | }
|
---|
544 |
|
---|
545 | # remember that this text file was one of our source files, but only
|
---|
546 | # if we are not processing a tmp file
|
---|
547 | if (!$self->{'processing_tmp_files'} ) {
|
---|
548 | $doc_obj->associate_source_file($filename_full_path);
|
---|
549 | }
|
---|
550 | # Do encoding stuff
|
---|
551 | my ($language, $encoding) = $self->textcat_get_language_encoding ($filename_full_path);
|
---|
552 |
|
---|
553 | my $text="";
|
---|
554 | if ( -s $filename_full_path > 0 ) {
|
---|
555 | &ReadTextFile::read_file($self, $filename_full_path, $encoding, $language, \$text); # already decoded as utf8
|
---|
556 | }
|
---|
557 |
|
---|
558 | # HathiTrust often has empty files
|
---|
559 | ## if (!length ($text)) {
|
---|
560 | ## # It's a bit unusual but not out of the question to have no text, so just give a warning
|
---|
561 | ## print "HathiTrustMETSPlugin: WARNING: $filename_full_path contains no text\n";
|
---|
562 | ## }
|
---|
563 |
|
---|
564 | # we need to escape the escape character, or else mg will convert into
|
---|
565 | # eg literal newlines, instead of leaving the text as '\n'
|
---|
566 | $text =~ s/\\/\\\\/g; # macro language
|
---|
567 | $text =~ s/_/\\_/g; # macro language
|
---|
568 |
|
---|
569 |
|
---|
570 | if ($text =~ m/<html.*?>\s*<head.*?>.*<\/head>\s*<body.*?>(.*)<\/body>\s*<\/html>\s*$/is) {
|
---|
571 | # looks like HTML input
|
---|
572 | # no need to escape < and > or put in <pre> tags
|
---|
573 |
|
---|
574 | $text = $1;
|
---|
575 |
|
---|
576 | # add text to document object
|
---|
577 | $doc_obj->add_utf8_text($cursection, "$text");
|
---|
578 | }
|
---|
579 | else {
|
---|
580 | $text =~ s/</</g;
|
---|
581 | $text =~ s/>/>/g;
|
---|
582 |
|
---|
583 | # insert preformat tags and add text to document object
|
---|
584 | $doc_obj->add_utf8_text($cursection, "<pre>\n$text\n</pre>");
|
---|
585 | }
|
---|
586 |
|
---|
587 | my $topics_filename = $filename_full_path . ".topics";
|
---|
588 | if ( -s $topics_filename > 0 ) {
|
---|
589 |
|
---|
590 | my $topics_text = "";
|
---|
591 | $self->ReadTextFile::read_file($topics_filename,"utf8",undef,\$topics_text);
|
---|
592 |
|
---|
593 | my @topics_array = split(/\|/,$topics_text);
|
---|
594 | foreach my $topic (@topics_array) {
|
---|
595 | if ($topic ne "") {
|
---|
596 | $doc_obj->set_utf8_metadata_element ($cursection, "concept", $topic);
|
---|
597 | }
|
---|
598 | }
|
---|
599 | }
|
---|
600 |
|
---|
601 | return 1;
|
---|
602 | }
|
---|
603 |
|
---|
604 |
|
---|
605 | sub clean_up_after_doc_obj_processing {
|
---|
606 | my $self = shift(@_);
|
---|
607 |
|
---|
608 | $self->ImageConverter::clean_up_temporary_files();
|
---|
609 | }
|
---|
610 |
|
---|
611 | 1;
|
---|