1 | ###########################################################################
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2 | #
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3 | # plugin.pm -- functions to handle using plugins
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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 | package plugin;
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27 |
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28 |
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29 | use strict; # to pick up typos and undeclared variables...
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30 | no strict 'refs'; # ...but allow filehandles to be variables and vice versa
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31 | no strict 'subs';
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32 |
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33 | require util;
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34 | use FileUtils;
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35 | use gsprintf 'gsprintf';
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36 |
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37 | # mapping from old plugin names to new ones for backwards compatibility
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38 | # can remove at sometime in future when we no longer want to support old xxPlug names in the config file
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39 | my $plugin_name_map = {
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40 | 'GAPlug' => 'GreenstoneXMLPlugin',
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41 | 'ArcPlug' => 'ArchivesInfPlugin',
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42 | 'RecPlug' => 'DirectoryPlugin',
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43 | 'TEXTPlug' => 'TextPlugin',
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44 | 'XMLPlug' => 'ReadXMLFile',
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45 | 'EMAILPlug' => 'EmailPlugin',
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46 | 'SRCPlug' => 'SourceCodePlugin',
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47 | 'NULPlug' => 'NulPlugin',
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48 | 'W3ImgPlug' => 'HTMLImagePlugin',
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49 | 'PagedImgPlug' => 'PagedImagePlugin',
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50 | 'METSPlug' => 'GreenstoneMETSPlugin',
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51 | 'PPTPlug' => 'PowerPointPlugin',
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52 | 'PSPlug' => 'PostScriptPlugin',
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53 | 'DBPlug' => 'DatabasePlugin'
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54 | };
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55 |
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56 | # global variables
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57 | my $stats = {'num_processed' => 0,
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58 | 'num_blocked' => 0,
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59 | 'num_not_processed' => 0,
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60 | 'num_not_recognised' => 0,
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61 | 'num_archives' => 0
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62 | };
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63 |
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64 | #globaloptions contains any options that should be passed to all plugins
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65 | my ($verbosity, $outhandle, $failhandle, $globaloptions);
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66 |
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67 | sub get_valid_pluginname {
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68 | my ($pluginname) = @_;
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69 | my $valid_name = $pluginname;
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70 | if (defined $plugin_name_map->{$pluginname}) {
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71 | $valid_name = $plugin_name_map->{$pluginname};
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72 | } elsif ($pluginname =~ /Plug$/) {
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73 | $valid_name =~ s/Plug/Plugin/;
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74 |
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75 | }
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76 | return $valid_name;
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77 | }
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78 |
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79 | sub load_plugin_require
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80 | {
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81 | my ($pluginname) = @_;
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82 |
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83 | my @check_list = ();
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84 |
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85 | # pp_plugname shorthand for 'perllib' 'plugin' '$pluginname.pm'
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86 | my $pp_plugname
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87 | = &FileUtils::filenameConcatenate('perllib', 'plugins', "${pluginname}.pm");
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88 | my $collectdir = $ENV{'GSDLCOLLECTDIR'};
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89 |
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90 | # find the plugin
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91 | if (defined($ENV{'GSDLCOLLECTION'}))
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92 | {
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93 | my $customplugname
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94 | = &FileUtils::filenameConcatenate($collectdir, "custom",$ENV{'GSDLCOLLECTION'},
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95 | $pp_plugname);
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96 | push(@check_list,$customplugname);
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97 | }
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98 |
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99 | my $colplugname = &FileUtils::filenameConcatenate($collectdir, $pp_plugname);
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100 | push(@check_list,$colplugname);
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101 |
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102 | if (defined $ENV{'GSDLEXTS'}) {
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103 |
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104 | my $ext_prefix = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "ext");
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105 |
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106 | my @extensions = split(/:/,$ENV{'GSDLEXTS'});
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107 | foreach my $e (@extensions) {
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108 | my $extplugname = &FileUtils::filenameConcatenate($ext_prefix, $e, $pp_plugname);
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109 | push(@check_list,$extplugname);
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110 |
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111 | }
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112 | }
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113 | if (defined $ENV{'GSDL3EXTS'}) {
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114 |
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115 | my $ext_prefix = &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'}, "ext");
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116 |
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117 | my @extensions = split(/:/,$ENV{'GSDL3EXTS'});
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118 | foreach my $e (@extensions) {
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119 | my $extplugname = &FileUtils::filenameConcatenate($ext_prefix, $e, $pp_plugname);
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120 | push(@check_list,$extplugname);
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121 |
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122 | }
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123 | }
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124 |
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125 |
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126 | my $mainplugname = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, $pp_plugname);
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127 | push(@check_list,$mainplugname);
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128 |
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129 | my $success=0;
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130 | foreach my $plugname (@check_list) {
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131 | if (-e $plugname) {
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132 | # lets add perllib folder to INC
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133 | # check it isn't already there first [jmt12]
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134 | my ($perllibfolder) = $plugname =~ /^(.*[\/\\]perllib)[\/\\]plugins/;
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135 | if (-d $perllibfolder)
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136 | {
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137 | my $found_perllibfolder = 0;
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138 | foreach my $path (@INC)
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139 | {
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140 | if ($path eq $perllibfolder)
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141 | {
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142 | $found_perllibfolder = 1;
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143 | last;
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144 | }
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145 | }
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146 | if (!$found_perllibfolder)
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147 | {
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148 | unshift (@INC, $perllibfolder);
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149 | }
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150 | }
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151 | require $plugname;
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152 | $success=1;
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153 | last;
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154 | }
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155 | }
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156 |
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157 | if (!$success) {
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158 | &gsprintf(STDERR, "{plugin.could_not_find_plugin}\n",
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159 | $pluginname);
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160 | die "\n";
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161 | }
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162 | }
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163 |
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164 | sub load_plugin_for_info {
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165 | my ($pluginname, $gs_version) = (@_);
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166 | $pluginname = &get_valid_pluginname($pluginname);
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167 | load_plugin_require($pluginname);
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168 |
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169 | # create a plugin object
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170 | my ($plugobj);
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171 | my $options = "-gsdlinfo,-gs_version,$gs_version";
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172 |
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173 | eval ("\$plugobj = new \$pluginname([],[$options])");
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174 | die "$@" if $@;
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175 |
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176 | return $plugobj;
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177 | }
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178 |
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179 | sub load_plugins {
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180 | my ($plugin_list) = shift @_;
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181 | my ($incremental_mode, $gs_version);
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182 | ($verbosity, $outhandle, $failhandle, $globaloptions, $incremental_mode, $gs_version) = @_; # globals
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183 | my @plugin_objects = ();
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184 | $verbosity = 2 unless defined $verbosity;
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185 | $outhandle = 'STDERR' unless defined $outhandle;
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186 | $failhandle = 'STDERR' unless defined $failhandle;
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187 |
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188 | # before pushing collection perl and plugin directories onto INC, test that
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189 | # they aren't already there [jmt12]
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190 | &util::augmentINC(&FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'},'perllib'));
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191 | &util::augmentINC(&FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'},'perllib','plugins'));
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192 |
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193 | map { $_ = "\"$_\""; } @$globaloptions;
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194 | my $globals = join (",", @$globaloptions);
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195 |
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196 | foreach my $pluginoptions (@$plugin_list) {
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197 | my $pluginname = shift @$pluginoptions;
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198 | next unless defined $pluginname;
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199 | $pluginname = &get_valid_pluginname($pluginname);
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200 | load_plugin_require($pluginname);
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201 |
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202 | # create a plugin object
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203 | my ($plugobj);
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204 | # put quotes around each option to the plugin, unless the option is already quoted
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205 | map { $_ = "\"$_\"" unless ($_ =~ m/^\s*\".*\"\s*$/) ; } @$pluginoptions;
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206 | my $options = "-gs_version,$gs_version,".join (",", @$pluginoptions);
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207 | if ($globals) {
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208 | if (@$pluginoptions) {
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209 | $options .= ",";
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210 | }
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211 | $options .= "$globals";
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212 | }
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213 | # need to escape backslash before putting in to the eval
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214 | # but watch out for any \" (which shouldn't be further escaped)
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215 | $options =~ s/\\([^"])/\\\\$1/g; #"
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216 | $options =~ s/\$/\\\$/g;
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217 |
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218 | eval ("\$plugobj = new \$pluginname([],[$options])");
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219 | die "$@" if $@;
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220 |
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221 | # initialize plugin
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222 | $plugobj->init($verbosity, $outhandle, $failhandle);
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223 |
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224 | $plugobj->set_incremental($incremental_mode);
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225 |
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226 | # add this object to the list
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227 | push (@plugin_objects, $plugobj);
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228 | }
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229 |
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230 | return \@plugin_objects;
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231 | }
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232 |
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233 |
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234 | sub begin {
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235 | my ($pluginfo, $base_dir, $processor, $maxdocs, $gli) = @_;
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236 |
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237 | map { $_->{'gli'} = $gli; } @$pluginfo;
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238 | map { $_->begin($pluginfo, $base_dir, $processor, $maxdocs); } @$pluginfo;
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239 | }
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240 |
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241 | sub remove_all {
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242 | my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
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243 |
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244 | map { $_->remove_all($pluginfo, $base_dir, $processor, $maxdocs); } @$pluginfo;
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245 | }
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246 |
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247 | sub remove_some {
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248 | my ($pluginfo, $infodbtype, $archivedir, $deleted_files) = @_;
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249 | return if (scalar(@$deleted_files)==0);
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250 | $infodbtype = "gdbm" if $infodbtype eq "gdbm-txtgz";
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251 | my $arcinfo_src_filename = &dbutil::get_infodb_file_path($infodbtype, "archiveinf-src", $archivedir);
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252 |
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253 | foreach my $file (@$deleted_files) {
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254 | # use 'archiveinf-src' info database to look up all the OIDs
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255 | # that this file is used in (note in most cases, it's just one OID)
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256 |
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257 | my $src_rec = &dbutil::read_infodb_entry($infodbtype, $arcinfo_src_filename, $file);
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258 | my $oids = $src_rec->{'oid'};
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259 | my $rv;
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260 | foreach my $plugobj (@$pluginfo) {
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261 |
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262 | $rv = $plugobj->remove_one($file, $oids, $archivedir);
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263 | if (defined $rv && $rv != -1) {
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264 | return $rv;
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265 | } # else undefined (was not recognised by the plugin) or there was an error, try the next one
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266 | }
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267 | return 0;
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268 | }
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269 |
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270 | }
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271 | sub file_block_read {
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272 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $gli) = @_;
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273 |
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274 |
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275 | $gli = 0 unless defined $gli;
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276 |
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277 | my $rv = 0;
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278 | my $glifile = $file;
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279 |
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280 | $glifile =~ s/^[\/\\]+//; # file sometimes starts with a / so get rid of it
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281 |
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282 | # Announce to GLI that we are handling a file
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283 | print STDERR "<File n='$glifile'>\n" if $gli;
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284 |
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285 | # the .kill file is a handy (if not very elegant) way of aborting
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286 | # an import.pl or buildcol.pl process
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287 | if (-e &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'}, ".kill")) {
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288 | gsprintf($outhandle, "{plugin.kill_file}\n");
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289 | die "\n";
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290 | }
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291 |
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292 | foreach my $plugobj (@$pluginfo) {
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293 |
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294 | $rv = $plugobj->file_block_read($pluginfo, $base_dir, $file, $block_hash, $metadata, $gli);
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295 | #last if (defined $rv && $rv==1); # stop this file once we have found something to 'process' it
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296 | }
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297 |
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298 | }
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299 |
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300 |
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301 | sub metadata_read {
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302 | my ($pluginfo, $base_dir, $file, $block_hash,
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303 | $extrametakeys, $extrametadata, $extrametafile,
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304 | $processor, $gli, $aux) = @_;
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305 |
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306 | $gli = 0 unless defined $gli;
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307 |
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308 | my $rv = 0;
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309 | my $glifile = $file;
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310 |
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311 | $glifile =~ s/^[\/\\]+//; # file sometimes starts with a / so get rid of it
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312 |
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313 | # Announce to GLI that we are handling a file
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314 | print STDERR "<File n='$glifile'>\n" if $gli;
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315 |
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316 | # the .kill file is a handy (if not very elegant) way of aborting
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317 | # an import.pl or buildcol.pl process
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318 | if (-e &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'}, ".kill")) {
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319 | gsprintf($outhandle, "{plugin.kill_file}\n");
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320 | die "\n";
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321 | }
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322 |
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323 | my $had_error = 0;
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324 | # pass this file by each of the plugins in turn until one
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325 | # is found which will process it
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326 | # read must return:
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327 | # undef - could not recognise
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328 | # -1 - tried but error
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329 | # 0 - blocked
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330 | # anything else for successful processing
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331 |
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332 | foreach my $plugobj (@$pluginfo) {
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333 |
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334 | $rv = $plugobj->metadata_read($pluginfo, $base_dir, $file, $block_hash,
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335 | $extrametakeys, $extrametadata, $extrametafile,
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336 | $processor, $gli, $aux);
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337 |
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338 | if (defined $rv) {
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339 | if ($rv == -1) {
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340 | # an error has occurred
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341 | $had_error = 1;
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342 | print STDERR "<ProcessingError n='$glifile'>\n" if $gli;
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343 | } else {
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344 | return $rv;
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345 | }
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346 | } # else undefined - was not recognised by the plugin
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347 | }
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348 |
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349 | return 0;
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350 | }
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351 |
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352 | sub read {
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353 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli, $aux) = @_;
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354 |
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355 | $maxdocs = -1 unless defined $maxdocs && $maxdocs =~ /\d/;
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356 | $total_count = 0 unless defined $total_count && $total_count =~ /\d/;
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357 | $gli = 0 unless defined $gli;
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358 |
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359 | my $rv = 0;
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360 | my $glifile = $file;
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361 |
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362 | $glifile =~ s/^[\/\\]+//; # file sometimes starts with a / so get rid of it
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363 |
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364 | # Announce to GLI that we are handling a file
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365 | print STDERR "<File n='$glifile'>\n" if $gli;
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366 |
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367 | # the .kill file is a handy (if not very elegant) way of aborting
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368 | # an import.pl or buildcol.pl process
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369 | if (-e &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'}, ".kill")) {
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370 | gsprintf($outhandle, "{plugin.kill_file}\n");
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371 | die "\n";
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372 | }
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373 |
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374 | my $had_error = 0;
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375 | # pass this file by each of the plugins in turn until one
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376 | # is found which will process it
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377 | # read must return:
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378 | # undef - could not recognise
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379 | # -1 - tried but error
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380 | # 0 - blocked
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381 | # anything else for successful processing
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382 |
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383 | foreach my $plugobj (@$pluginfo) {
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384 |
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385 | $rv = $plugobj->read($pluginfo, $base_dir, $file,
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386 | $block_hash, $metadata, $processor, $maxdocs,
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387 | $total_count, $gli, $aux);
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388 |
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389 | if (defined $rv) {
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390 | if ($rv == -1) {
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391 | # an error has occurred
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392 | $had_error = 1;
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393 | } else {
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394 | return $rv;
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395 | }
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396 | } # else undefined - was not recognised by the plugin
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397 | }
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398 |
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399 | if ($had_error) {
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400 | # was recognised but couldn't be processed
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401 | if ($verbosity >= 2) {
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402 | gsprintf($outhandle, "{plugin.no_plugin_could_process}\n", $file);
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403 | }
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404 | # tell the GLI that it was not processed
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405 | print STDERR "<NonProcessedFile n='$glifile'>\n" if $gli;
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406 |
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407 | gsprintf($failhandle, "$file: {plugin.no_plugin_could_process_this_file}\n");
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408 | $stats->{'num_not_processed'} ++;
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409 | } else {
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410 | # was not recognised
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411 | if ($verbosity >= 2) {
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412 | gsprintf($outhandle, "{plugin.no_plugin_could_recognise}\n",$file);
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413 | }
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414 | # tell the GLI that it was not processed
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415 | print STDERR "<NonRecognisedFile n='$glifile'>\n" if $gli;
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416 |
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417 | gsprintf($failhandle, "$file: {plugin.no_plugin_could_recognise_this_file}\n");
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418 | $stats->{'num_not_recognised'} ++;
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419 | }
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420 | return 0;
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421 | }
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422 |
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423 | # write out some general stats that the plugins have compiled - note that
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424 | # the buildcol.pl process doesn't currently call this process so the stats
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425 | # are only output after import.pl -
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426 | sub write_stats {
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427 | my ($pluginfo, $statshandle, $faillog, $gli) = @_;
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428 |
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429 | $gli = 0 unless defined $gli;
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430 |
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431 | foreach my $plugobj (@$pluginfo) {
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432 | $plugobj->compile_stats($stats);
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433 | }
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434 |
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435 | my $total = $stats->{'num_processed'} + $stats->{'num_blocked'} +
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436 | $stats->{'num_not_processed'} + $stats->{'num_not_recognised'};
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437 |
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438 | print STDERR "<ImportComplete considered='$total' processed='$stats->{'num_processed'}' blocked='$stats->{'num_blocked'}' ignored='$stats->{'num_not_recognised'}' failed='$stats->{'num_not_processed'}'>\n" if $gli;
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439 |
|
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440 | if ($total == 1) {
|
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441 | gsprintf($statshandle, "* {plugin.one_considered}\n");
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442 | } else {
|
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443 | gsprintf($statshandle, "* {plugin.n_considered}\n", $total);
|
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444 | }
|
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445 | if ($stats->{'num_archives'}) {
|
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446 | if ($stats->{'num_archives'} == 1) {
|
---|
447 | gsprintf($statshandle, " ({plugin.including_archive})\n");
|
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448 | }
|
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449 | else {
|
---|
450 | gsprintf($statshandle, " ({plugin.including_archives})\n",
|
---|
451 | $stats->{'num_archives'});
|
---|
452 | }
|
---|
453 | }
|
---|
454 | if ($stats->{'num_processed'} == 1) {
|
---|
455 | gsprintf($statshandle, "* {plugin.one_included}\n");
|
---|
456 | } else {
|
---|
457 | gsprintf($statshandle, "* {plugin.n_included}\n", $stats->{'num_processed'});
|
---|
458 | }
|
---|
459 | if ($stats->{'num_not_recognised'}) {
|
---|
460 | if ($stats->{'num_not_recognised'} == 1) {
|
---|
461 | gsprintf($statshandle, "* {plugin.one_unrecognised}\n");
|
---|
462 | } else {
|
---|
463 | gsprintf($statshandle, "* {plugin.n_unrecognised}\n",
|
---|
464 | $stats->{'num_not_recognised'});
|
---|
465 | }
|
---|
466 |
|
---|
467 | }
|
---|
468 | if ($stats->{'num_not_processed'}) {
|
---|
469 | if ($stats->{'num_not_processed'} == 1) {
|
---|
470 | gsprintf($statshandle, "* {plugin.one_rejected}\n");
|
---|
471 | } else {
|
---|
472 | gsprintf($statshandle, "* {plugin.n_rejected}\n",
|
---|
473 | $stats->{'num_not_processed'});
|
---|
474 | }
|
---|
475 | }
|
---|
476 | if ($stats->{'num_not_processed'} || $stats->{'num_not_recognised'}) {
|
---|
477 | gsprintf($statshandle, " {plugin.see_faillog}\n", $faillog);
|
---|
478 | }
|
---|
479 | }
|
---|
480 |
|
---|
481 | sub end {
|
---|
482 | my ($pluginfo, $processor) = @_;
|
---|
483 | map { $_->end($processor); } @$pluginfo;
|
---|
484 | }
|
---|
485 |
|
---|
486 | sub deinit {
|
---|
487 | my ($pluginfo, $processor) = @_;
|
---|
488 |
|
---|
489 |
|
---|
490 | map { $_->deinit($processor); } @$pluginfo;
|
---|
491 | }
|
---|
492 |
|
---|
493 | 1;
|
---|