1 | ###########################################################################
|
---|
2 | #
|
---|
3 | # SRWDownload.pm -- base class for all the import plugins
|
---|
4 | # A component of the Greenstone digital library software
|
---|
5 | # from the New Zealand Digital Library Project at the
|
---|
6 | # University of Waikato, New Zealand.
|
---|
7 | #
|
---|
8 | # Copyright (C) 1999 New Zealand Digital Library Project
|
---|
9 | #
|
---|
10 | # This program is free software; you can redistribute it and/or modify
|
---|
11 | # it under the terms of the GNU General Public License as published by
|
---|
12 | # the Free Software Foundation; either version 2 of the License, or
|
---|
13 | # (at your option) any later version.
|
---|
14 | #
|
---|
15 | # This program is distributed in the hope that it will be useful,
|
---|
16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
18 | # GNU General Public License for more details.
|
---|
19 | #
|
---|
20 | # You should have received a copy of the GNU General Public License
|
---|
21 | # along with this program; if not, write to the Free Software
|
---|
22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
23 | #
|
---|
24 | ###########################################################################
|
---|
25 |
|
---|
26 | package SRWDownload;
|
---|
27 |
|
---|
28 | eval {require bytes};
|
---|
29 |
|
---|
30 | # suppress the annoying "subroutine redefined" warning that various
|
---|
31 | # plugins cause under perl 5.6
|
---|
32 | $SIG{__WARN__} = sub {warn($_[0]) unless ($_[0] =~ /Subroutine\s+\S+\sredefined/)};
|
---|
33 |
|
---|
34 | use strict;
|
---|
35 |
|
---|
36 | use Z3950Download;
|
---|
37 | use IPC::Open2;
|
---|
38 |
|
---|
39 | sub BEGIN {
|
---|
40 | @SRWDownload::ISA = ('Z3950Download');
|
---|
41 | }
|
---|
42 |
|
---|
43 | my $arguments = [
|
---|
44 | ];
|
---|
45 |
|
---|
46 | my $options = { 'name' => "SRWDownload",
|
---|
47 | 'desc' => "{SRWDownload.desc}",
|
---|
48 | 'abstract' => "no",
|
---|
49 | 'inherits' => "yes"
|
---|
50 | };
|
---|
51 |
|
---|
52 |
|
---|
53 | sub new
|
---|
54 | {
|
---|
55 | my ($class) = shift (@_);
|
---|
56 | my ($getlist,$inputargs,$hashArgOptLists) = @_;
|
---|
57 | push(@$getlist, $class);
|
---|
58 |
|
---|
59 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
|
---|
60 | push(@{$hashArgOptLists->{"OptList"}},$options);
|
---|
61 |
|
---|
62 | my $self = new Z3950Download($getlist,$inputargs,$hashArgOptLists);
|
---|
63 |
|
---|
64 | if ($self->{'info_only'}) {
|
---|
65 | # don't worry about any options etc
|
---|
66 | return bless $self, $class;
|
---|
67 | }
|
---|
68 |
|
---|
69 | # Must set $self->{'url'}, since GLI use $self->{'url'} to calculate the log file name!
|
---|
70 | $self->{'url'} = $self->{'host'}.":".$self->{'port'};
|
---|
71 | return bless $self, $class;
|
---|
72 | }
|
---|
73 |
|
---|
74 | sub download
|
---|
75 | {
|
---|
76 | my ($self) = shift (@_);
|
---|
77 | my ($hashGeneralOptions) = @_;
|
---|
78 | my ($strOpen,$strBase,$strFind,$strResponse,$intAmount,$intMaxRecords,$strRecords);
|
---|
79 |
|
---|
80 | # If the url contains just the host and port (as it would for Z39.50), then prepend
|
---|
81 | # the http protocol. Otherwise the download is stuck in an infinite loop for SRW/SRU
|
---|
82 | $self->{'url'} = "http://$self->{'url'}" if $self->{'url'} !~ m/^http/;
|
---|
83 | my $url = $self->{'url'};
|
---|
84 |
|
---|
85 | print STDERR "<<Defined Maximum>>\n";
|
---|
86 |
|
---|
87 | $strOpen = $self->start_yaz($url);
|
---|
88 |
|
---|
89 | print STDERR "Opening connection to \"$self->{'url'}\"\n";
|
---|
90 | print STDERR "Access database: \"$self->{'database'}\"\n";
|
---|
91 | $self->run_command_without_output("base $self->{'database'}");
|
---|
92 | $self->run_command_without_output("querytype prefix");
|
---|
93 | print STDERR "Searching for keyword: \"$self->{'find'}\"\n";
|
---|
94 |
|
---|
95 | $intAmount =$self->findAmount($self->{'find'});
|
---|
96 |
|
---|
97 | if($intAmount <= 0)
|
---|
98 | {
|
---|
99 | ($intAmount == -1)?
|
---|
100 | print STDERR "Something wrong with the arguments,downloading can not be performed\n" :
|
---|
101 | print STDERR "No Record is found\n";
|
---|
102 | print STDERR "<<Finished>>\n";
|
---|
103 | return 0;
|
---|
104 | }
|
---|
105 | $intMaxRecords = ($self->{'max_records'} > $intAmount)? $intAmount : $self->{'max_records'};
|
---|
106 | print STDERR "<<Total number of record(s):$intMaxRecords>>\n";
|
---|
107 |
|
---|
108 | $strRecords = $self->getRecords($intMaxRecords);
|
---|
109 |
|
---|
110 | $self->saveRecords($strRecords,$hashGeneralOptions->{'cache_dir'},$intMaxRecords);
|
---|
111 | print STDERR "Closing connection...\n";
|
---|
112 |
|
---|
113 | $self->quit_yaz();
|
---|
114 | return 1;
|
---|
115 | }
|
---|
116 |
|
---|
117 |
|
---|
118 | sub saveRecords
|
---|
119 | {
|
---|
120 | my ($self,$strRecords,$strOutputDir,$intMaxRecords) = @_;
|
---|
121 |
|
---|
122 | # setup directories
|
---|
123 | # Currently only gather the MARC format
|
---|
124 | $strRecords ="<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<collection>$strRecords</collection>";
|
---|
125 | my $strFileName = $self->generateFileName($intMaxRecords);
|
---|
126 | my $host = $self->{'host'};
|
---|
127 | $host =~ s/http:\/\///;
|
---|
128 | $strOutputDir =~ s/"//g; #"
|
---|
129 | my $strOutputFile = &util::filename_cat($strOutputDir,$host,"$strFileName.xml");
|
---|
130 |
|
---|
131 | # prepare subdirectory for record (if needed)
|
---|
132 |
|
---|
133 | my ($strSubDirPath,$unused) = $self->dirFileSplit($strOutputFile);
|
---|
134 | &util::mk_all_dir($strSubDirPath);
|
---|
135 |
|
---|
136 | print STDERR "Saving records to \"$strOutputFile\"\n";
|
---|
137 |
|
---|
138 | # save record
|
---|
139 | open (ZOUT,">$strOutputFile")
|
---|
140 | || die "Unable to save oai metadata record: $!\n";
|
---|
141 | print ZOUT $strRecords;
|
---|
142 | close(ZOUT);
|
---|
143 | }
|
---|
144 |
|
---|
145 | sub get {
|
---|
146 | my ($self,$strShow,$numRecord) = @_;
|
---|
147 |
|
---|
148 | $self->run_command_without_output($strShow);
|
---|
149 |
|
---|
150 | my $strFullOutput="";
|
---|
151 | my $count=0;
|
---|
152 | my $readRecord = 0;
|
---|
153 | my $endRecord = 0;
|
---|
154 |
|
---|
155 | my $output = $self->{'YAZOUT'};
|
---|
156 | my $strLine;
|
---|
157 |
|
---|
158 | while ($strLine = <$output>) #while (defined ($strLine = <$output>))
|
---|
159 | {
|
---|
160 | last if ($count >= $numRecord && $endRecord); # done, if we've reached the end of the last record
|
---|
161 |
|
---|
162 | last if($strLine =~ m/^HTTP ERROR/i);
|
---|
163 |
|
---|
164 | if ($strLine =~ m/pos=[\d]*/i ) {
|
---|
165 | $count++;
|
---|
166 | $readRecord = 1;
|
---|
167 | $endRecord = 0;
|
---|
168 | next;
|
---|
169 | }
|
---|
170 |
|
---|
171 | if ($strLine =~ m/<\/record>/i ) { # end tag of record
|
---|
172 | $endRecord = 1;
|
---|
173 | }
|
---|
174 |
|
---|
175 | next if(!$readRecord);
|
---|
176 |
|
---|
177 | $strFullOutput .= $strLine;
|
---|
178 | }
|
---|
179 |
|
---|
180 | return $strFullOutput;
|
---|
181 | }
|
---|
182 |
|
---|
183 | sub url_information{
|
---|
184 | my ($self) = @_;
|
---|
185 |
|
---|
186 | my $url = $self->{'url'};
|
---|
187 |
|
---|
188 | $url =~ s#http://##;
|
---|
189 |
|
---|
190 | return $self->SUPER::url_information($url);
|
---|
191 |
|
---|
192 | }
|
---|
193 |
|
---|
194 | sub error
|
---|
195 | {
|
---|
196 | my ($self, $strFunctionName,$strError) = @_;
|
---|
197 | {
|
---|
198 | print STDERR "Error occoured in SRWDownload.pm\n".
|
---|
199 | "In Function:".$strFunctionName."\n".
|
---|
200 | "Error Message:".$strError."\n";
|
---|
201 | exit(-1);
|
---|
202 | }
|
---|
203 | }
|
---|
204 |
|
---|
205 | 1;
|
---|