1 | ###########################################################################
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2 | #
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3 | # DirectoryPlugin.pm --
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4 | # A component of the Greenstone digital library software
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5 | # from the New Zealand Digital Library Project at the
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6 | # University of Waikato, New Zealand.
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7 | #
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8 | # Copyright (C) 1999 New Zealand Digital Library Project
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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 | # DirectoryPlugin is a plugin which recurses through directories processing
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27 | # each file it finds - which basically means passing it down the plugin
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28 | # pipeline
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29 |
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30 | package DirectoryPlugin;
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31 |
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32 | use AbstractPlugin;
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33 | use plugin;
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34 | use util;
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35 | use metadatautil;
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36 |
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37 | use File::Basename;
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38 | use strict;
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39 | no strict 'refs';
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40 | no strict 'subs';
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41 |
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42 | use Encode;
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43 |
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44 | BEGIN {
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45 | @DirectoryPlugin::ISA = ('AbstractPlugin');
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46 | }
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47 |
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48 | my $arguments =
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49 | [ { 'name' => "block_exp",
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50 | 'desc' => "{BasePlugin.block_exp}",
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51 | 'type' => "regexp",
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52 | 'deft' => &get_default_block_exp(),
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53 | 'reqd' => "no" },
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54 | # this option has been deprecated. leave it here for now so we can warn people not to use it
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55 | { 'name' => "use_metadata_files",
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56 | 'desc' => "{DirectoryPlugin.use_metadata_files}",
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57 | 'type' => "flag",
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58 | 'reqd' => "no",
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59 | 'hiddengli' => "yes" },
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60 | { 'name' => "recheck_directories",
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61 | 'desc' => "{DirectoryPlugin.recheck_directories}",
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62 | 'type' => "flag",
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63 | 'reqd' => "no" } ];
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64 |
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65 | my $options = { 'name' => "DirectoryPlugin",
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66 | 'desc' => "{DirectoryPlugin.desc}",
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67 | 'abstract' => "no",
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68 | 'inherits' => "yes",
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69 | 'args' => $arguments };
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70 |
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71 | sub new {
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72 | my ($class) = shift (@_);
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73 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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74 | push(@$pluginlist, $class);
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75 |
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76 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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77 | push(@{$hashArgOptLists->{"OptList"}},$options);
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78 |
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79 | my $self = new AbstractPlugin($pluginlist, $inputargs, $hashArgOptLists);
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80 |
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81 | if ($self->{'info_only'}) {
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82 | # don't worry about any options or initialisations etc
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83 | return bless $self, $class;
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84 | }
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85 |
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86 | # we have left this option in so we can warn people who are still using it
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87 | if ($self->{'use_metadata_files'}) {
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88 | die "ERROR: DirectoryPlugin -use_metadata_files option has been deprecated. Please remove the option and add MetadataXMLPlug to your plugin list instead!\n";
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89 | }
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90 |
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91 | $self->{'subdir_extrametakeys'} = {};
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92 |
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93 | return bless $self, $class;
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94 | }
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95 |
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96 | sub begin {
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97 | my $self = shift (@_);
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98 | my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
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99 |
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100 | my $proc_package_name = ref $processor;
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101 |
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102 | if ($proc_package_name !~ /buildproc$/ && $self->{'incremental'} == 1) {
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103 |
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104 | # Only lookup timestamp info for import.pl, and only if incremental is set
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105 |
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106 | my $output_dir = $processor->getoutputdir();
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107 | my $archives_inf = &util::filename_cat($output_dir,"archives.inf");
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108 |
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109 | if ( -e $archives_inf ) {
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110 | $self->{'inf_timestamp'} = -M $archives_inf;
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111 | }
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112 | }
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113 |
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114 | #$self->SUPER::begin($pluginfo, $base_dir, $processor, $maxdocs);
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115 | }
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116 |
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117 | sub end {
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118 |
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119 | }
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120 |
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121 | sub deinit {
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122 |
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123 | }
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124 | # return 1 if this class might recurse using $pluginfo
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125 | sub is_recursive {
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126 | my $self = shift (@_);
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127 |
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128 | return 1;
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129 | }
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130 |
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131 | sub get_default_block_exp {
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132 | my $self = shift (@_);
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133 |
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134 | return '(CVS|\.svn)';
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135 | }
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136 |
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137 | sub check_directory_path {
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138 |
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139 | my $self = shift(@_);
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140 | my ($dirname) = @_;
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141 |
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142 | return undef unless (-d $dirname);
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143 |
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144 | return 0 if ($self->{'block_exp'} ne "" && $dirname =~ /$self->{'block_exp'}/);
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145 |
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146 | my $outhandle = $self->{'outhandle'};
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147 |
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148 | # check to make sure we're not reading the archives or index directory
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149 | my $gsdlhome = quotemeta($ENV{'GSDLHOME'});
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150 | if ($dirname =~ m/^$gsdlhome\/.*?\/import.*?\/(archives|index)$/) {
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151 | print $outhandle "DirectoryPlugin: $dirname appears to be a reference to a Greenstone collection, skipping.\n";
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152 | return 0;
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153 | }
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154 |
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155 | # check to see we haven't got a cyclic path...
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156 | if ($dirname =~ m%(/.*){,41}%) {
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157 | print $outhandle "DirectoryPlugin: $dirname is 40 directories deep, is this a recursive path? if not increase constant in DirectoryPlugin.pm.\n";
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158 | return 0;
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159 | }
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160 |
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161 | # check to see we haven't got a cyclic path...
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162 | if ($dirname =~ m%.*?import/(.+?)/import/\1.*%) {
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163 | print $outhandle "DirectoryPlugin: $dirname appears to be in a recursive loop...\n";
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164 | return 0;
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165 | }
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166 |
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167 | return 1;
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168 | }
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169 |
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170 | # this may be called more than once
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171 | sub sort_out_associated_files {
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172 |
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173 | my $self = shift (@_);
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174 | my ($block_hash) = @_;
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175 | if (!scalar (keys %{$block_hash->{'shared_fileroot'}})) {
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176 | return;
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177 | }
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178 |
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179 | $self->{'assocfile_info'} = {} unless defined $self->{'assocfile_info'};
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180 | my $metadata = $self->{'assocfile_info'};
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181 | foreach my $prefix (keys %{$block_hash->{'shared_fileroot'}}) {
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182 | my $record = $block_hash->{'shared_fileroot'}->{$prefix};
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183 |
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184 | my $tie_to = $record->{'tie_to'};
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185 | my $exts = $record->{'exts'};
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186 |
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187 | if ((defined $tie_to) && (scalar (keys %$exts) > 0)) {
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188 | # set up fileblocks and assocfile_tobe
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189 | my $base_file = "$prefix$tie_to";
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190 | $metadata->{$base_file} = {} unless defined $metadata->{$base_file};
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191 | my $base_file_metadata = $metadata->{$base_file};
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192 |
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193 | $base_file_metadata->{'gsdlassocfile_tobe'} = [] unless defined $base_file_metadata->{'gsdlassocfile_tobe'};
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194 | my $assoc_tobe = $base_file_metadata->{'gsdlassocfile_tobe'};
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195 | foreach my $e (keys %$exts) {
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196 | # block the file
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197 | $block_hash->{'file_blocks'}->{"$prefix$e"} = 1;
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198 | # set up as an associatd file
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199 | print STDERR " $self->{'plugin_type'}: Associating $prefix$e with $tie_to version\n";
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200 | my $mime_type = ""; # let system auto detect this
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201 | push(@$assoc_tobe,"$prefix$e:$mime_type:");
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202 |
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203 | }
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204 | }
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205 | } # foreach record
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206 |
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207 | $block_hash->{'shared_fileroot'} = undef;
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208 | $block_hash->{'shared_fileroot'} = {};
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209 |
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210 | }
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211 |
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212 |
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213 | # do block exp OR special blocking ???
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214 |
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215 | sub file_is_blocked {
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216 | my $self = shift (@_);
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217 | my ($block_hash, $filename_full_path) = @_;
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218 |
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219 | if (defined $block_hash->{'file_blocks'}->{$filename_full_path}) {
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220 | $self->{'num_blocked'} ++;
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221 | return 1;
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222 | }
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223 | # check Directory plugin's own block_exp
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224 | if ($self->{'block_exp'} ne "" && $filename_full_path =~ /$self->{'block_exp'}/) {
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225 | $self->{'num_blocked'} ++;
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226 | return 1; # blocked
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227 | }
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228 | return 0;
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229 | }
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230 |
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231 |
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232 |
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233 | sub file_block_read {
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234 | my $self = shift (@_);
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235 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $gli) = @_;
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236 |
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237 | my $outhandle = $self->{'outhandle'};
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238 | my $verbosity = $self->{'verbosity'};
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239 |
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240 | # Calculate the directory name and ensure it is a directory and
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241 | # that it is not explicitly blocked.
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242 | my $dirname = $file;
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243 | $dirname = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
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244 |
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245 | my $directory_ok = $self->check_directory_path($dirname);
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246 | return $directory_ok unless (defined $directory_ok && $directory_ok == 1);
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247 |
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248 | $block_hash->{'file_blocks'} = {} unless defined $block_hash->{'file_blocks'};
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249 | $block_hash->{'shared_fileroot'} = {} unless defined $block_hash->{'shared_fileroot'};
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250 |
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251 | # Recur over directory contents.
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252 | my (@dir, $subfile);
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253 | #my $count = 0;
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254 |
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255 | print $outhandle "DirectoryPlugin block: getting directory $dirname\n" if ($verbosity > 2);
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256 |
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257 | # find all the files in the directory
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258 | if (!opendir (DIR, $dirname)) {
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259 | if ($gli) {
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260 | print STDERR "<ProcessingError n='$file' r='Could not read directory $dirname'>\n";
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261 | }
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262 | print $outhandle "DirectoryPlugin: WARNING - couldn't read directory $dirname\n";
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263 | return -1; # error in processing
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264 | }
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265 | @dir = readdir (DIR);
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266 | closedir (DIR);
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267 |
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268 | for (my $i = 0; $i < scalar(@dir); $i++) {
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269 | my $subfile = $dir[$i];
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270 | my $this_file_base_dir = $base_dir;
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271 | next if ($subfile =~ m/^\.\.?$/);
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272 |
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273 | # Recursively read each $subfile
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274 | print $outhandle "DirectoryPlugin block recurring: $subfile\n" if ($verbosity > 2);
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275 |
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276 | #$count += &plugin::file_block_read ($pluginfo, $this_file_base_dir,
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277 | &plugin::file_block_read ($pluginfo, $this_file_base_dir,
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278 | &util::filename_cat($file, $subfile),
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279 | $block_hash, $metadata, $gli);
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280 |
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281 | }
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282 | $self->sort_out_associated_files($block_hash);
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283 | #return $count;
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284 |
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285 | }
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286 | # return number of files processed, undef if can't process
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287 | # Note that $base_dir might be "" and that $file might
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288 | # include directories
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289 |
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290 | # This function passes around metadata hash structures. Metadata hash
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291 | # structures are hashes that map from a (scalar) key (the metadata element
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292 | # name) to either a scalar metadata value or a reference to an array of
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293 | # such values.
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294 |
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295 | sub read {
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296 | my $self = shift (@_);
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297 | my ($pluginfo, $base_dir, $file, $block_hash, $in_metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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298 |
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299 | my $outhandle = $self->{'outhandle'};
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300 | my $verbosity = $self->{'verbosity'};
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301 |
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302 | # Calculate the directory name and ensure it is a directory and
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303 | # that it is not explicitly blocked.
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304 | my $dirname;
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305 | if ($file eq "") {
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306 | $dirname = $base_dir;
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307 | } else {
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308 | $dirname = $file;
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309 | $dirname = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
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310 | }
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311 |
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312 | my $directory_ok = $self->check_directory_path($dirname);
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313 | return $directory_ok unless (defined $directory_ok && $directory_ok == 1);
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314 |
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315 | if (($verbosity > 2) && ((scalar keys %$in_metadata) > 0)) {
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316 | print $outhandle "DirectoryPlugin: metadata passed in: ",
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317 | join(", ", keys %$in_metadata), "\n";
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318 | }
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319 |
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320 |
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321 | # Recur over directory contents.
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322 | my (@dir, $subfile);
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323 | my $count = 0;
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324 |
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325 | print $outhandle "DirectoryPlugin read: getting directory $dirname\n" if ($verbosity > 2);
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326 |
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327 | # find all the files in the directory
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328 | if (!opendir (DIR, $dirname)) {
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329 | if ($gli) {
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330 | print STDERR "<ProcessingError n='$file' r='Could not read directory $dirname'>\n";
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331 | }
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332 | print $outhandle "DirectoryPlugin: WARNING - couldn't read directory $dirname\n";
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333 | return -1; # error in processing
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334 | }
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335 | @dir = readdir (DIR);
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336 | closedir (DIR);
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337 |
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338 | # Re-order the files in the list so any directories ending with .all are moved to the end
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339 | for (my $i = scalar(@dir) - 1; $i >= 0; $i--) {
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340 | if (-d &util::filename_cat($dirname, $dir[$i]) && $dir[$i] =~ /\.all$/) {
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341 | push(@dir, splice(@dir, $i, 1));
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342 | }
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343 | }
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344 |
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345 | # setup the metadata structures. we do a metadata_read pass to see if there is any additional metadata, then pass it to read
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346 |
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347 | my $additionalmetadata = 0; # is there extra metadata available?
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348 | my %extrametadata; # maps from filespec to extra metadata keys
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349 | my @extrametakeys; # keys of %extrametadata in order read
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350 |
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351 |
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352 | my $os_dirsep = &util::get_os_dirsep();
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353 | my $dirsep = &util::get_dirsep();
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354 | my $base_dir_regexp = $base_dir;
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355 | $base_dir_regexp =~ s/\//$os_dirsep/g;
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356 | my $local_dirname = $dirname;
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357 | $local_dirname =~ s/^$base_dir_regexp($os_dirsep)//;
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358 | $local_dirname .= $dirsep;
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359 |
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360 | if (defined $self->{'subdir_extrametakeys'}->{$local_dirname}) {
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361 | my $extrakeys = $self->{'subdir_extrametakeys'}->{$local_dirname};
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362 | foreach my $ek (@$extrakeys) {
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363 | my $extrakeys_re = $ek->{'re'};
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364 | my $extrakeys_md = $ek->{'md'};
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365 | push(@extrametakeys,$extrakeys_re);
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366 | $extrametadata{$extrakeys_re} = $extrakeys_md;
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367 | }
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368 | delete($self->{'subdir_extrametakeys'}->{$local_dirname});
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369 | }
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370 |
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371 | # apply metadata pass for each of the files in the directory
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372 | my $out_metadata;
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373 | my $num_files = scalar(@dir);
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374 | for (my $i = 0; $i < scalar(@dir); $i++) {
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375 | my $subfile = $dir[$i];
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376 | my $this_file_base_dir = $base_dir;
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377 | last if ($maxdocs != -1 && $count >= $maxdocs);
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378 | next if ($subfile =~ m/^\.\.?$/);
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379 | my $file_subfile = &util::filename_cat($file, $subfile);
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380 | my $full_filename = &util::filename_cat($this_file_base_dir, $file_subfile);
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381 | if ($self->file_is_blocked($block_hash,$full_filename)) {
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382 | print STDERR "DirectoryPlugin: file $full_filename was blocked for metadata_read\n" if ($verbosity > 2);
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383 | next;
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384 | }
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385 |
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386 | # Recursively read each $subfile
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387 | print $outhandle "DirectoryPlugin metadata recurring: $subfile\n" if ($verbosity > 2);
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388 |
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389 | $count += &plugin::metadata_read ($pluginfo, $this_file_base_dir,
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390 | $file_subfile,$block_hash,
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391 | $out_metadata, \@extrametakeys, \%extrametadata,
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392 | $processor, $maxdocs, $gli);
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393 | $additionalmetadata = 1;
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394 | }
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395 |
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396 | # filter out any extrametakeys that mention subdirectories and store
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397 | # for later use (i.e. when that sub-directory is being processed)
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398 |
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399 | foreach my $ek (@extrametakeys) {
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400 | my ($subdir_re,$extrakey_dir) = &File::Basename::fileparse($ek);
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401 | $extrakey_dir =~ s/\\\./\./g; # remove RE syntax
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402 |
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403 | my $dirsep_re = &util::get_re_dirsep();
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404 |
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405 | my $ek_non_re = $ek;
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406 | $ek_non_re =~ s/\\\./\./g; # remove RE syntax
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407 |
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408 | if ($ek_non_re =~ m/$dirsep_re/) { # specifies at least one directory
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409 | my $md = $extrametadata{$ek};
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410 |
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411 | my $subdir_extrametakeys = $self->{'subdir_extrametakeys'};
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412 |
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413 | my $subdir_rec = { 're' => $subdir_re, 'md' => $md };
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414 |
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415 | push(@{$subdir_extrametakeys->{$extrakey_dir}},$subdir_rec);
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416 | }
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417 | }
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418 |
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419 | # import each of the files in the directory
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420 | $count=0;
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421 | for (my $i = 0; $i <= scalar(@dir); $i++) {
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422 | # When every file in the directory has been done, pause for a moment (figuratively!)
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423 | # If the -recheck_directories argument hasn't been provided, stop now (default)
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424 | # Otherwise, re-read the contents of the directory to check for new files
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425 | # Any new files are added to the @dir list and are processed as normal
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426 | # This is necessary when documents to be indexed are specified in bibliographic DBs
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427 | # These files are copied/downloaded and stored in a new folder at import time
|
---|
428 | if ($i == $num_files) {
|
---|
429 | last unless $self->{'recheck_directories'};
|
---|
430 |
|
---|
431 | # Re-read the files in the directory to see if there are any new files
|
---|
432 | last if (!opendir (DIR, $dirname));
|
---|
433 | my @dirnow = readdir (DIR);
|
---|
434 | closedir (DIR);
|
---|
435 |
|
---|
436 | # We're only interested if there are more files than there were before
|
---|
437 | last if (scalar(@dirnow) <= scalar(@dir));
|
---|
438 |
|
---|
439 | # Any new files are added to the end of @dir to get processed by the loop
|
---|
440 | my $j;
|
---|
441 | foreach my $subfilenow (@dirnow) {
|
---|
442 | for ($j = 0; $j < $num_files; $j++) {
|
---|
443 | last if ($subfilenow eq $dir[$j]);
|
---|
444 | }
|
---|
445 | if ($j == $num_files) {
|
---|
446 | # New file
|
---|
447 | push(@dir, $subfilenow);
|
---|
448 | }
|
---|
449 | }
|
---|
450 | # When the new files have been processed, check again
|
---|
451 | $num_files = scalar(@dir);
|
---|
452 | }
|
---|
453 |
|
---|
454 | my $subfile = $dir[$i];
|
---|
455 | my $this_file_base_dir = $base_dir;
|
---|
456 | last if ($maxdocs != -1 && ($count + $total_count) >= $maxdocs);
|
---|
457 | next if ($subfile =~ /^\.\.?$/);
|
---|
458 |
|
---|
459 | my $file_subfile = &util::filename_cat($file, $subfile);
|
---|
460 | my $full_filename
|
---|
461 | = &util::filename_cat($this_file_base_dir,$file_subfile);
|
---|
462 |
|
---|
463 | if ($self->file_is_blocked($block_hash,$full_filename)) {
|
---|
464 | print STDERR "DirectoryPlugin: file $full_filename was blocked for read\n" if ($verbosity > 2);
|
---|
465 | next;
|
---|
466 | }
|
---|
467 |
|
---|
468 | # Follow Windows shortcuts
|
---|
469 | if ($subfile =~ /(?i)\.lnk$/ && $ENV{'GSDLOS'} =~ /^windows$/i) {
|
---|
470 | require Win32::Shortcut;
|
---|
471 | my $shortcut = new Win32::Shortcut(&util::filename_cat($dirname, $subfile));
|
---|
472 | if ($shortcut) {
|
---|
473 | # The file to be processed is now the target of the shortcut
|
---|
474 | $this_file_base_dir = "";
|
---|
475 | $file = "";
|
---|
476 | $subfile = $shortcut->Path;
|
---|
477 | }
|
---|
478 | }
|
---|
479 |
|
---|
480 | # check for a symlink pointing back to a leading directory
|
---|
481 | if (-d "$dirname/$subfile" && -l "$dirname/$subfile") {
|
---|
482 | # readlink gives a "fatal error" on systems that don't implement
|
---|
483 | # symlinks. This assumes the the -l test above would fail on those.
|
---|
484 | my $linkdest=readlink "$dirname/$subfile";
|
---|
485 | if (!defined ($linkdest)) {
|
---|
486 | # system error - file not found?
|
---|
487 | warn "DirectoryPlugin: symlink problem - $!";
|
---|
488 | } else {
|
---|
489 | # see if link points to current or a parent directory
|
---|
490 | if ($linkdest =~ m@^[\./\\]+$@ ||
|
---|
491 | index($dirname, $linkdest) != -1) {
|
---|
492 | warn "DirectoryPlugin: Ignoring recursive symlink ($dirname/$subfile -> $linkdest)\n";
|
---|
493 | next;
|
---|
494 | ;
|
---|
495 | }
|
---|
496 | }
|
---|
497 | }
|
---|
498 |
|
---|
499 | print $outhandle "DirectoryPlugin: preparing metadata for $subfile\n" if ($verbosity > 2);
|
---|
500 |
|
---|
501 | # Make a copy of $in_metadata to pass to $subfile
|
---|
502 | $out_metadata = {};
|
---|
503 | &metadatautil::combine_metadata_structures($out_metadata, $in_metadata);
|
---|
504 |
|
---|
505 | # check the assocfile_info
|
---|
506 | if (defined $self->{'assocfile_info'}->{$full_filename}) {
|
---|
507 | &metadatautil::combine_metadata_structures($out_metadata, $self->{'assocfile_info'}->{$full_filename});
|
---|
508 | }
|
---|
509 | ## encode the filename as perl5 doesn't handle unicode filenames
|
---|
510 | my $tmpfile = Encode::encode_utf8($subfile);
|
---|
511 |
|
---|
512 | # Next add metadata read in XML files (if it is supplied)
|
---|
513 | if ($additionalmetadata == 1) {
|
---|
514 |
|
---|
515 | my ($filespec, $mdref);
|
---|
516 | foreach $filespec (@extrametakeys) {
|
---|
517 | ## use the utf8 encoded filename to do the filename comparison
|
---|
518 | if ($tmpfile =~ /^$filespec$/) {
|
---|
519 | print $outhandle "File \"$subfile\" matches filespec \"$filespec\"\n"
|
---|
520 | if ($verbosity > 2);
|
---|
521 | $mdref = $extrametadata{$filespec};
|
---|
522 | &metadatautil::combine_metadata_structures($out_metadata, $mdref);
|
---|
523 | }
|
---|
524 | }
|
---|
525 | }
|
---|
526 |
|
---|
527 |
|
---|
528 | if (defined $self->{'inf_timestamp'}) {
|
---|
529 | my $inf_timestamp = $self->{'inf_timestamp'};
|
---|
530 |
|
---|
531 | if (! -d $full_filename) {
|
---|
532 | my $filename_timestamp = -M $full_filename;
|
---|
533 | if ($filename_timestamp > $inf_timestamp) {
|
---|
534 | # filename has been around for longer than inf
|
---|
535 | ##### print $outhandle "**** Skipping $subfile\n";
|
---|
536 | next;
|
---|
537 | }
|
---|
538 | }
|
---|
539 | }
|
---|
540 |
|
---|
541 | # Recursively read each $subfile
|
---|
542 | print $outhandle "DirectoryPlugin recurring: $subfile\n" if ($verbosity > 2);
|
---|
543 |
|
---|
544 | $count += &plugin::read ($pluginfo, $this_file_base_dir,
|
---|
545 | $file_subfile, $block_hash,
|
---|
546 | $out_metadata, $processor, $maxdocs, ($total_count + $count), $gli);
|
---|
547 | }
|
---|
548 |
|
---|
549 | return $count;
|
---|
550 | }
|
---|
551 |
|
---|
552 | 1;
|
---|