1 | ###########################################################################
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2 | #
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3 | # WebDownload.pm -- base class for all the import 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 OAIDownload;
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27 |
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28 | eval {require bytes};
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29 |
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30 | # suppress the annoying "subroutine redefined" warning that various
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31 | # plugins cause under perl 5.6
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32 | $SIG{__WARN__} = sub {warn($_[0]) unless ($_[0] =~ /Subroutine\s+\S+\sredefined/)};
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33 |
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34 | use strict;
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35 |
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36 | use WgetDownload;
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37 | use XMLParser;
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38 |
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39 | use POSIX qw(tmpnam);
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40 | use util;
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41 |
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42 | sub BEGIN {
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43 | @OAIDownload::ISA = ('WgetDownload');
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44 | }
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45 |
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46 | my $arguments =
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47 | [ { 'name' => "url",
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48 | 'disp' => "{OAIDownload.url_disp}",
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49 | 'desc' => "{OAIDownload.url}",
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50 | 'type' => "string",
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51 | 'reqd' => "yes"},
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52 | { 'name' => "metadata_prefix",
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53 | 'disp' => "{OAIDownload.metadata_prefix_disp}",
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54 | 'desc' => "{OAIDownload.metadata_prefix}",
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55 | 'type' => "string",
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56 | 'deft' => "oai_dc",
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57 | 'reqd' => "no"},
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58 | { 'name' => "set",
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59 | 'disp' => "{OAIDownload.set_disp}",
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60 | 'desc' => "{OAIDownload.set}",
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61 | 'type' => "string",
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62 | 'reqd' => "no"},
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63 | { 'name' => "get_doc",
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64 | 'disp' => "{OAIDownload.get_doc_disp}",
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65 | 'desc' => "{OAIDownload.get_doc}",
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66 | 'type' => "flag",
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67 | 'reqd' => "no"},
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68 | { 'name' => "get_doc_exts",
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69 | 'disp' => "{OAIDownload.get_doc_exts_disp}",
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70 | 'desc' => "{OAIDownload.get_doc_exts}",
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71 | 'type' => "string",
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72 | 'deft' => "doc,pdf,ppt",
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73 | 'reqd' => "no"},
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74 | { 'name' => "max_records",
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75 | 'disp' => "{OAIDownload.max_records_disp}",
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76 | 'desc' => "{OAIDownload.max_records}",
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77 | 'type' => "int",
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78 | 'deft' => "500",
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79 | 'range' => "1,",
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80 | 'reqd' => "no"} ];
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81 |
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82 | my $options = { 'name' => "OAIDownload",
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83 | 'desc' => "{OAIDownload.desc}",
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84 | 'abstract' => "no",
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85 | 'inherits' => "yes",
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86 | 'args' => $arguments };
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87 |
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88 | ##my $self;
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89 |
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90 | #### my $strWgetOptions="";
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91 |
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92 | sub new
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93 | {
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94 | my ($class) = shift (@_);
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95 | my ($getlist,$inputargs,$hashArgOptLists) = @_;
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96 | push(@$getlist, $class);
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97 |
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98 | if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
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99 | if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
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100 |
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101 | my $self = (defined $hashArgOptLists)? new WgetDownload($getlist,$inputargs,$hashArgOptLists): new WgetDownload($getlist,$inputargs);
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102 |
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103 | if ($self->{'info_only'}) {
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104 | # don't worry about any options etc
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105 | return bless $self, $class;
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106 | }
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107 |
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108 | my $parser = new XML::Parser('Style' => 'Stream',
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109 | 'PluginObj' => $self,
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110 | 'Handlers' => {'Char' => \&Char,
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111 | 'Start' => \&OAI_StartTag,
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112 | 'End' => \&OAI_EndTag
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113 | });
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114 | $self->{'parser'} = $parser;
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115 |
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116 | # make sure the tmp directory that we will use later exists
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117 | my $tmp_dir = "$ENV{GSDLHOME}/tmp";
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118 | if (! -e $tmp_dir) {
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119 | &util::mk_dir($tmp_dir);
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120 | }
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121 |
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122 |
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123 | # set up hashmap for individual items in get_doc_exts
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124 | # to make testing for matches easier
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125 |
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126 | $self->{'lookup_exts'} = {};
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127 | my $get_doc_exts = $self->{'get_doc_exts'};
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128 |
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129 | if ((defined $get_doc_exts) && ($get_doc_exts ne "")) {
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130 | my @exts = split(/,\s*/,$get_doc_exts);
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131 | foreach my $e (@exts) {
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132 | $self->{'lookup_exts'}->{lc($e)} = 1;
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133 | }
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134 | }
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135 |
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136 |
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137 | return bless $self, $class;
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138 | }
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139 |
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140 | sub download
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141 | {
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142 | my ($self) = shift (@_);
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143 | my ($hashGeneralOptions) = @_;
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144 |
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145 | ## my $cmdWget = $strWgetOptions;
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146 |
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147 | my $strOutputDir ="";
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148 | $strOutputDir = $hashGeneralOptions->{"cache_dir"};
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149 | my $strBasURL = $self->{'url'};
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150 | my $intMaxRecords = $self->{'max_records'};
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151 | my $blnDownloadDoc = $self->{'get_doc'};
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152 |
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153 | print STDERR "<<Defined Maximum>>\n";
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154 |
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155 | my $strIDs = $self->getOAIIDs($strBasURL);
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156 |
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157 | if($strIDs eq "")
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158 | {
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159 | print STDERR "Error: No IDs found\n";
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160 | return 0;
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161 | }
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162 |
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163 | my $aryIDs = $self->parseOAIIDs($strIDs);
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164 | my $intIDs = 0;
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165 | if($self->{'max_records'} < scalar(@$aryIDs))
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166 | {
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167 | $intIDs = $self->{'max_records'};
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168 | }
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169 | else
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170 | {
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171 | $intIDs = scalar(@$aryIDs);
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172 | }
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173 | print STDERR "<<Total number of record(s):$intIDs>>\n";
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174 |
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175 | $self->getOAIRecords($aryIDs, $strOutputDir, $strBasURL, $intMaxRecords, $blnDownloadDoc);
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176 |
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177 | # my $tmp_file = &util::filename_cat($ENV{'GSDLHOME'},"tmp","oai.tmp");
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178 | # &util::rm($tmp_file);
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179 |
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180 | return 1;
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181 | }
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182 |
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183 | sub getOAIIDs
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184 | {
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185 | my ($self,$strBasURL) = @_;
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186 | ## my ($cmdWget);
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187 |
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188 | my $wgetOptions = $self->getWgetOptions();
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189 |
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190 | my $cmdWget = $wgetOptions;
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191 |
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192 | print STDERR "Gathering OAI identifiers.....\n";
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193 |
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194 | my $metadata_prefix = $self->{'metadata_prefix'};
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195 | $cmdWget .= " -q -O - \"$strBasURL?verb=ListIdentifiers&metadataPrefix=$metadata_prefix";
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196 |
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197 | # if $set specified, add it in to URL
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198 | my $set = $self->{'set'};
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199 | $cmdWget .= "&set=$set" if ($set ne "");
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200 |
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201 | $cmdWget .= "\" ";
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202 |
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203 | my $accumulated_strIDs = "";
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204 | my $strIDs = $self->useWget($cmdWget);
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205 |
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206 | if (!defined $strIDs or $strIDs eq "" ){
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207 | print STDERR "Server information is unavailable.\n";
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208 | print STDERR "<<Finished>>\n";
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209 | return;
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210 | }
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211 |
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212 | print STDERR "<<Download Information>>\n";
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213 |
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214 | $self->parse_xml($strIDs);
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215 |
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216 | $accumulated_strIDs = $strIDs;
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217 |
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218 | while ($strIDs =~ m/<resumptionToken.*?>\s*(.*?)\s*<\/resumptionToken>/) {
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219 | # top up list with further requests for IDs
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220 |
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221 | my $resumption_token = $1;
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222 |
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223 | $cmdWget = $wgetOptions;
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224 |
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225 | $cmdWget .= " -q -O - \"$strBasURL?verb=ListIdentifiers&resumptionToken=$resumption_token\"";
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226 |
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227 | $strIDs = $self->useWget($cmdWget);
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228 |
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229 | $self->parse_xml($strIDs);
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230 |
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231 | $accumulated_strIDs .= $strIDs;
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232 |
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233 | my @accumulated_identifiers
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234 | = ($accumulated_strIDs =~ m/<identifier>(.*?)<\/identifier>/sg);
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235 |
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236 | my $num_acc_identifiers = scalar(@accumulated_identifiers);
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237 | if ($num_acc_identifiers > $self->{'max_records'}) {
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238 | last;
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239 | }
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240 | }
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241 |
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242 | return $accumulated_strIDs;
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243 | }
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244 |
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245 | sub parseOAIIDs
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246 | {
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247 | my ($self,$strIDs) = @_;
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248 |
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249 | print STDERR "Parsing OAI identifiers.....\n";
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250 | $strIDs =~ s/^.*?<identifier>/<identifier>/s;
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251 | $strIDs =~ s/^(.*<\/identifier>).*$/$1/s;
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252 |
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253 | my @aryIDs = ();
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254 |
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255 | while ($strIDs =~ m/<identifier>(.*?)<\/identifier>(.*)$/s)
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256 | {
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257 | $strIDs = $2;
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258 | push(@aryIDs,$1);
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259 | }
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260 |
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261 | return \@aryIDs;
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262 | }
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263 |
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264 | sub dirFileSplit
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265 | {
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266 | my ($self,$strFile) = @_;
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267 |
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268 | my @aryDirs = split("[/\]",$strFile);
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269 |
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270 | my $strLocalFile = pop(@aryDirs);
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271 | my $strSubDirs = join("/",@aryDirs);
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272 |
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273 | return ($strSubDirs,$strLocalFile);
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274 | }
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275 |
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276 | sub getOAIDoc
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277 | {
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278 | my ($self,$strRecord, $oai_rec_filename) = @_;
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279 |
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280 | print STDERR "Gathering source documents.....\n";
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281 | # look out for identifier tag in metadata section
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282 |
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283 | if ($strRecord =~ m/<metadata>(.*)<\/metadata>/s)
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284 | {
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285 | my $strMetaTag = $1;
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286 | my $had_valid_url = 0;
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287 |
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288 | while ($strMetaTag =~ s/<(dc:)?identifier>(.*?)<\/(dc:)?identifier>//is)
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289 | {
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290 | my $doc_id_url = $2;
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291 |
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292 | next if ($doc_id_url !~ m/^(https?|ftp):\/\//);
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293 |
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294 | my $orig_doc_id_url = $doc_id_url;
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295 | $had_valid_url = 1;
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296 |
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297 | my ($doc_dir_url_prefix,$doc_id_tail) = ($doc_id_url =~ m/^(.*)\/(.*?)$/);
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298 | my $faked_ext = 0;
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299 | my $primary_doc_match = 0;
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300 |
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301 | my ($id_file_ext) = ($doc_id_tail =~ m/\.([^\.]+)$/);
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302 |
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303 | if (defined $id_file_ext) {
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304 | # cross-check this filename extension with get_doc_exts option
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305 | # if provided
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306 | my $lookup_exts = $self->{'lookup_exts'};
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307 |
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308 | if (defined $lookup_exts->{lc($id_file_ext)}) {
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309 | # this initial URL matches requirement
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310 | $primary_doc_match = 1;
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311 | }
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312 | }
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313 | else {
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314 | $faked_ext = 1;
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315 | $id_file_ext = "html";
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316 | }
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317 |
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318 |
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319 | if ((!$primary_doc_match) && ($id_file_ext =~ m/^html?$/i)) {
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320 | # Download this doc if HTML, scan through it looking for a link
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321 | # that does match get_doc_exts
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322 |
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323 |
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324 | # 1. Generate a tmp name
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325 | my $tmp_filename = &util::get_tmp_filename();
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326 |
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327 | # 2. Download it
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328 | my $wget_opts2 = $self->getWgetOptions();
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329 | my $wget_cmd2 = "$wget_opts2 --convert-links -O \"$tmp_filename\" \"$doc_id_url\"";
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330 |
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331 | my ($stdout_and_err2,$error2,$follow2) = $self->useWgetMonitored($wget_cmd2);
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332 |
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333 | if($error2 ne "")
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334 | {
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335 | print STDERR "Error occured while retrieving OAI source documents: $error2\n";
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336 | exit(-1);
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337 | }
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338 |
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339 | if (defined $follow2) {
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340 | # src url was "redirected" to another place
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341 | # => pick up on this and make it the new doc_id_url
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342 | $doc_id_url = $follow2;
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343 | }
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344 |
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345 | my $primary_doc_html = "";
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346 | if (open(HIN,"<$tmp_filename")) {
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347 | my $line;
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348 | while (defined ($line = <HIN>)) {
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349 | $primary_doc_html .= $line;
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350 | }
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351 | close(HIN);
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352 |
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353 | # 3. Scan through it looking for match
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354 | #
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355 | # if got match, change $doc_id_url to this new URL and
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356 | # $id_file_ext to 'match'
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357 |
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358 | my @href_links = ($primary_doc_html =~ m/href="(.*?)"/gsi);
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359 |
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360 | my $lookup_exts = $self->{'lookup_exts'};
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361 |
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362 | foreach my $href (@href_links) {
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363 | my ($ext) = ($href =~ m/\.([^\.]+)$/);
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364 |
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365 | if ((defined $ext) && (defined $lookup_exts->{$ext})) {
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366 |
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367 | if ($href !~ m/^(https?|ftp):\/\//) {
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368 | # link is within current site
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369 | my ($site_domain) = ($doc_id_url =~ m/^((?:https?|ftp):\/\/.*?)\//);
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370 |
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371 | $href = "$site_domain$href";
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372 | }
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373 |
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374 | $doc_id_url = $href;
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375 | $id_file_ext = $ext;
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376 | last;
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377 | }
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378 | }
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379 | }
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380 | else {
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381 | print STDERR "Error occurred while retrieving OAI source documents:\n";
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382 | print STDERR "$!\n";
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383 | }
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384 |
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385 | if (-e $tmp_filename) {
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386 | &util::rm($tmp_filename);
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387 | }
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388 | }
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389 |
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390 | my $download_doc_filename = $oai_rec_filename;
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391 | $download_doc_filename =~ s/\.oai$/\.$id_file_ext/;
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392 |
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393 | my ($unused,$download_doc_file) = $self->dirFileSplit($download_doc_filename);
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394 |
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395 | my $wget_opts = $self->getWgetOptions();
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396 | my $wget_cmd = "$wget_opts --convert-links -O \"$download_doc_filename\" \"$doc_id_url\"";
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397 |
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398 | my ($stdout_and_err,$errors,$follow) = $self->useWgetMonitored($wget_cmd);
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399 |
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400 | if($errors ne "")
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401 | {
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402 | print STDERR "Error occured while retriving OAI souce documents:\n";
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403 | print STDERR "$errors\n";
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404 | exit(-1);
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405 | }
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406 |
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407 |
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408 | $strRecord =~ s/<metadata>(.*?)<(dc:)?identifier>$orig_doc_id_url<\/(dc:)?identifier>(.*?)<\/metadata>/<metadata>$1<${2}identifier>$orig_doc_id_url<\/${2}identifier>\n <gi.Sourcedoc>$download_doc_file<\/gi.Sourcedoc>$4<\/metadata>/s;
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409 | }
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410 |
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411 | if (!$had_valid_url)
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412 | {
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413 | print STDERR "\tNo souce document URL is specified in the OAI record (No (dc:)?identifier is provided)\n";
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414 | }
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415 | }
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416 | else
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417 | {
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418 | print STDERR "\tNo souce document URL is specified in the OAI record (No metadata field is provided)\n";
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419 | }
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420 |
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421 | return $strRecord;
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422 | }
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423 |
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424 | sub getOAIRecords
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425 | {
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426 | my ($self,$aryIDs, $strOutputDir, $strBasURL, $intMaxRecords, $blnDownloadDoc) = @_;
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427 |
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428 | my $intDocCounter = 0;
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429 |
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430 | my $metadata_prefix = $self->{'metadata_prefix'};
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431 |
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432 | foreach my $strID ( @$aryIDs)
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433 | {
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434 | print STDERR "Gathering OAI record with ID $strID.....\n";
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435 |
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436 | my $wget_opts = $self->getWgetOptions();
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437 | my $cmdWget= "$wget_opts -q -O - \"$strBasURL?verb=GetRecord&metadataPrefix=$metadata_prefix&identifier=$strID\"";
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438 |
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439 | my $strRecord = $self->useWget($cmdWget);
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440 |
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441 | my @fileDirs = split(":",$strID);
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442 | my $local_id = pop @fileDirs;
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443 |
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444 | # setup directories
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445 |
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446 | $strOutputDir =~ s/"//g; #"
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447 |
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448 | my $host =$self->{'url'};
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449 |
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450 | $host =~ s/https?:\/\///g;
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451 |
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452 | $host =~ s/:.*//g;
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453 |
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454 | my $strFileURL = "$strOutputDir/$host/$local_id.oai";
|
---|
455 |
|
---|
456 |
|
---|
457 | # prepare subdirectory for record (if needed)
|
---|
458 | my ($strSubDirPath,$unused) = ("", "");
|
---|
459 |
|
---|
460 | ($strSubDirPath,$unused) = $self->dirFileSplit($strFileURL);
|
---|
461 |
|
---|
462 | &util::mk_all_dir($strSubDirPath);
|
---|
463 |
|
---|
464 | my $ds = &util::get_dirsep();
|
---|
465 |
|
---|
466 | if($blnDownloadDoc)
|
---|
467 | {
|
---|
468 | $strRecord = $self->getOAIDoc($strRecord,$strFileURL);
|
---|
469 | }
|
---|
470 |
|
---|
471 | # save record
|
---|
472 | open (OAIOUT,">$strFileURL")
|
---|
473 | || die "Unable to save oai metadata record: $!\n";
|
---|
474 | print OAIOUT $strRecord;
|
---|
475 | close(OAIOUT);
|
---|
476 |
|
---|
477 | print STDERR "Saving records to $strFileURL\n";
|
---|
478 | print STDERR "<<Done>>\n";
|
---|
479 | $intDocCounter ++;
|
---|
480 | last if ($intDocCounter >= $intMaxRecords);
|
---|
481 | }
|
---|
482 |
|
---|
483 | ($intDocCounter >= $intMaxRecords) ?
|
---|
484 | print STDERR "Reached maximum download records, use -max_records to set the maximum.\n":
|
---|
485 | print STDERR "Complete download meta record from $strBasURL\n";
|
---|
486 |
|
---|
487 | print STDERR "<<Finished>>\n";
|
---|
488 | }
|
---|
489 |
|
---|
490 | sub url_information
|
---|
491 | {
|
---|
492 | my ($self) = shift (@_);
|
---|
493 | if(!defined $self){ die "System Error: No \$self defined for url_information in OAIDownload\n";}
|
---|
494 |
|
---|
495 | my $wgetOptions = $self->getWgetOptions();
|
---|
496 | my $strBaseCMD = $wgetOptions." -q -O - \"$self->{'url'}?_OPTS_\"";
|
---|
497 |
|
---|
498 | my $strIdentify = "verb=Identify";
|
---|
499 | my $strListSets = "verb=ListSets";
|
---|
500 | my $strListMdFormats = "verb=ListMetadataFormats";
|
---|
501 |
|
---|
502 | my $strIdentifyCMD = $strBaseCMD;
|
---|
503 | $strIdentifyCMD =~ s/_OPTS_/$strIdentify/;
|
---|
504 |
|
---|
505 | my $strIdentifyText = $self->useWget($strIdentifyCMD);
|
---|
506 |
|
---|
507 | if (!defined $strIdentifyText or $strIdentifyText eq "" ){
|
---|
508 | print STDERR "Server information is unavailable.\n";
|
---|
509 | print STDERR "<<Finished>>\n";
|
---|
510 | return;
|
---|
511 | }
|
---|
512 |
|
---|
513 | print STDERR "General information:\n";
|
---|
514 | $self->parse_xml($strIdentifyText);
|
---|
515 | print STDERR "\n";
|
---|
516 |
|
---|
517 | print STDERR "=" x 10, "\n";
|
---|
518 | print STDERR "Metadata Format Information (metadataPrefix):\n";
|
---|
519 | print STDERR "=" x 10, "\n";
|
---|
520 |
|
---|
521 | my $strListMdFormatsCMD = $strBaseCMD;
|
---|
522 | $strListMdFormatsCMD =~ s/_OPTS_/$strListMdFormats/;
|
---|
523 | my $strListMdFormatsText = $self->useWget($strListMdFormatsCMD);
|
---|
524 |
|
---|
525 | $self->parse_xml($strListMdFormatsText);
|
---|
526 | print STDERR "\n";
|
---|
527 |
|
---|
528 | print STDERR "=" x 10, "\n";
|
---|
529 | print STDERR "List Information:\n";
|
---|
530 | print STDERR "=" x 10, "\n";
|
---|
531 |
|
---|
532 | my $strListSetCMD = $strBaseCMD;
|
---|
533 | $strListSetCMD =~ s/_OPTS_/$strListSets/;
|
---|
534 | my $strListSetsText = $self->useWget($strListSetCMD);
|
---|
535 |
|
---|
536 | $self->parse_xml($strListSetsText);
|
---|
537 | }
|
---|
538 |
|
---|
539 | sub parse_xml
|
---|
540 | {
|
---|
541 | my ($self) = shift (@_);
|
---|
542 | my ($xml_text) = @_;
|
---|
543 |
|
---|
544 | #### change this to work directly from $xml_text
|
---|
545 |
|
---|
546 | #Open a temporary file to store OAI information, and store the information to the temp file
|
---|
547 | my $name = &util::filename_cat($ENV{GSDLHOME},"tmp","oai.tmp");
|
---|
548 |
|
---|
549 | open(*OAIOUT,"> $name");
|
---|
550 |
|
---|
551 | print OAIOUT $xml_text;
|
---|
552 | close(OAIOUT);
|
---|
553 |
|
---|
554 | $self->{'temp_file_name'} = $name;
|
---|
555 |
|
---|
556 | ## print STDERR "**** xml text = $xml_text\n";
|
---|
557 |
|
---|
558 | eval {
|
---|
559 | $self->{'parser'}->parsefile("$name");
|
---|
560 | ## $self->{'parser'}->parse($xml_text);
|
---|
561 | };
|
---|
562 |
|
---|
563 | if ($@) {
|
---|
564 | die "OAI: Parsed file $name is not a well formed XML file ($@)\n";
|
---|
565 | ## die "OAI: Parsed text is not a well formed XML file ($@)\n";
|
---|
566 | }
|
---|
567 |
|
---|
568 | unlink($self->{'temp_file_name'}) or die "Could not unlink $self->{'temp_file_name'}: $!";
|
---|
569 | }
|
---|
570 |
|
---|
571 | ####END
|
---|
572 | #{
|
---|
573 | # if($self->{'info'})
|
---|
574 | # {
|
---|
575 | # unlink($self->{'temp_file_name'}) or die "Could not unlink $self->{'temp_file_name'}: $!";
|
---|
576 | # }
|
---|
577 | #}
|
---|
578 |
|
---|
579 | # This Char function overrides the one in XML::Parser::Stream to overcome a
|
---|
580 | # problem where $expat->{Text} is treated as the return value, slowing
|
---|
581 | # things down significantly in some cases.
|
---|
582 | sub Char {
|
---|
583 | use bytes; # Necessary to prevent encoding issues with XML::Parser 2.31+
|
---|
584 | $_[0]->{'Text'} .= $_[1];
|
---|
585 |
|
---|
586 | my $self = $_[0]->{'PluginObj'};
|
---|
587 | if ((defined $self->{'subfield'} && ($self->{'subfield'} ne ""))) {
|
---|
588 | $self->{'text'} .= $_[1];
|
---|
589 | $self->{'text'} =~ s/[\n]|([ ]{2,})//g;
|
---|
590 | if($self->{'text'} ne "")
|
---|
591 | {
|
---|
592 | print STDERR " $self->{'subfield'}:($self->{'text'})\n";
|
---|
593 | }
|
---|
594 | }
|
---|
595 | return undef;
|
---|
596 | }
|
---|
597 |
|
---|
598 | sub OAI_StartTag
|
---|
599 | {
|
---|
600 | my ($expat, $element, %attr) = @_;
|
---|
601 |
|
---|
602 | my $self = $expat->{'PluginObj'};
|
---|
603 | $self->{'subfield'} = $element;
|
---|
604 |
|
---|
605 | }
|
---|
606 |
|
---|
607 | sub OAI_EndTag
|
---|
608 | {
|
---|
609 | my ($expat, $element) = @_;
|
---|
610 |
|
---|
611 | my $self = $expat->{'PluginObj'};
|
---|
612 | $self->{'text'} = "";
|
---|
613 | $self->{'subfield'} = "";
|
---|
614 | }
|
---|
615 |
|
---|
616 | sub error
|
---|
617 | {
|
---|
618 | my ($self,$strFunctionName,$strError) = @_;
|
---|
619 | {
|
---|
620 | print "Error occoured in OAIDownload.pm\n".
|
---|
621 | "In Function:".$strFunctionName."\n".
|
---|
622 | "Error Message:".$strError."\n";
|
---|
623 | exit(-1);
|
---|
624 | }
|
---|
625 | }
|
---|
626 |
|
---|
627 |
|
---|
628 |
|
---|
629 | 1;
|
---|