File:  [LON-CAPA] / nsdl / nsdlloncapaorg / harvester.pl
Revision 1.4: download - view: text, annotated - select for diffs
Tue Jul 29 14:37:51 2003 UTC (20 years, 11 months ago) by www
Branches: MAIN
CVS tags: HEAD
This actually does something.

    1: #!/usr/local/bin/perl
    2: 
    3: #
    4: # lon-capa.pl
    5: # Parse the LON-CAPA metadata
    6: #
    7: # Andy Dong <adong@smete.org> 10/23/2002
    8: #
    9: # Contact Gerd Kortemeyer (korte@lite.msu.edu)
   10: 
   11: use strict;
   12: use LWP::UserAgent;
   13: use Getopt::Std;
   14: use Digest::MD5 qw(md5_hex);
   15: use IO::File;
   16: 
   17: my $basepath='/home/httpd/cgi-bin/OAI-XMLFile/XMLFile/nsdlexport/data';
   18: 
   19: my $pub_month;
   20: my $pub_year;
   21: my @loncapa;
   22: 
   23: # HTTP requests
   24: 
   25: my $content;
   26: my $content_regex = 'File Not Found';
   27: 
   28: # Configuration
   29: 
   30: my $debug = 0;
   31: my $url = 'http://s10.lite.msu.edu/cgi-bin/metadata_harvest.pl';
   32: # The list of servers is from the LON-CAPA CVS repository in /loncapa/loncom/production_hosts.tab
   33: my @servers = ( 'newscience.westshore.cc.mi.us', 's10.lite.msu.edu', 's12.lite.msu.edu', 'lon-capa.chem.sunysb.edu', 'schubert.tmcc.edu', 'dalton.chem.sfu.ca', 'capa2.phy.ohiou.edu', 'pollux.physics.fsu.edu', 'loncapa.physics.sc.edu', 'loncapa.math.ucf.edu', 'zappa.ags.udel.edu', 'loncapa.gwu.edu');
   34: 
   35: # End Configuration
   36: 
   37: my $ua = new LWP::UserAgent;
   38: $ua->timeout(600);
   39: 
   40: my $request = new HTTP::Request GET => $url;
   41: $request->authorization_basic('reaper', 'cat4u');
   42: 
   43: my $response = $ua->request( $request );
   44: 
   45: if ( $response->is_success ) {
   46: 	$content = $response->content;
   47: # Delete all blank lines
   48: 	$content =~ s/(?<!.)\n//g;
   49: # Replace all ^M with spaces
   50: 	$content =~ s/
/\s/g;
   51: # Push the content into an array
   52: 	@loncapa = split /\n/, $content;
   53: } else {
   54: 	die 'LON-CAPA request failed: ' . $response->message;
   55: }
   56: 
   57: #@loncapa=undef;
   58: #open (LON_FILE, 'metadata_harvest.txt') || die;
   59: 
   60: #while (<LON_FILE>) {
   61: #       chomp;
   62: #       push(@loncapa,$_);
   63: #}
   64: 
   65: my %records = ();;
   66: 
   67: foreach my $metadata (@loncapa) {
   68: 	chomp $metadata;
   69: 	$metadata=~s/[^\w\d\s\.\;\:\,\|\/]/ /gs;
   70: 	my @tkline = split('\|', $metadata);
   71: 	my $title = $tkline[0];
   72: 	next if ( $title eq '' );
   73: 	my $author = $tkline[1];
   74: 	next if ( $author eq '' );
   75: 	my @authorname = split(' ', $author);
   76: 	my $author_fname = $authorname[0];
   77: 	my $author_lname = $authorname[1];
   78: 	# We have to make an exception for Multimedia Physics which is an organization not a person
   79: 	my $object_type;
   80: 	if ( $author_lname eq 'Physics' ) {
   81: 		$object_type = 'organization';
   82: 	} else {
   83: 		$object_type = 'person';
   84: 	}
   85: 	my $subject = $tkline[2];
   86: 	next if ( ($subject eq 'Sample') || ($subject eq 'Something') );
   87: 	my $resourceurl = 'http://nsdl.lon-capa.org' . $tkline[3];
   88:         my $baseid=$tkline[3];
   89: 	my ($adom,$auname)=($baseid=~/^\/res\/(\w+)\/(\w+)\//);
   90: 	$baseid=~s/\W/\_/g;
   91: 	$baseid=~s/^\_res\_//g;
   92: 	my $fileid=md5_hex($baseid);
   93: 
   94: 	next if ( $resourceurl =~ /(.*)\/demo\/(.*)/ );
   95: 	my $keywords = $tkline[4];
   96: 	my $version = $tkline[5];
   97: 	my $notes = $tkline[6];
   98: 	my $abstract = $tkline[7];
   99: 	next if ($abstract eq '');
  100: 	my $type = $tkline[8];
  101: 	my $learning_resource_type;
  102: 	if ( $type eq 'problem' ) {
  103: 		$learning_resource_type = 114;
  104: 	} elsif ( $type eq 'exam' ) {
  105: 		$learning_resource_type = 114;
  106: 	} elsif ( $type eq 'quiz' ) {
  107: 		$learning_resource_type = 114;
  108: 	} elsif ( $type eq 'assess' ) {
  109: 		$learning_resource_type = 114;
  110: 	} elsif ( $type eq 'survey' ) {
  111: 		$learning_resource_type = 114;
  112: 	} elsif ( $type eq 'form' ) {
  113: 		$learning_resource_type = 114;
  114: 	} elsif ( $type eq 'library' ) {
  115: 		$learning_resource_type = 107;
  116: 	} elsif ( $type eq 'page' ) {
  117: 		$learning_resource_type = 104;
  118: 	} elsif ( $type eq 'sequence' ) {
  119: 		$learning_resource_type = 104;
  120: 	} elsif ( $type eq 'spreadsheet' ) {
  121: 		$learning_resource_type = 114;
  122: 	} else {
  123: 		$learning_resource_type = 0;
  124: 	}
  125: 	
  126: 	my $media_format;
  127: 	if ( ($type eq 'htm') || ($type eq 'gif') || ($type eq 'mov') || ($type eq 'xml') ) {
  128: 		$media_format = 70;
  129: 	} else {
  130: 		$media_format = 0;
  131: 	}
  132: 
  133: 	my $language = $tkline[9]; # Look only for seniso
  134: 	next if ( $language ne 'seniso');
  135: 	my $primary_language='en-US';
  136: 	my $creation_date = $tkline[10];
  137: 	my ($pub_year,$pub_month,$pub_day) = ( $creation_date =~ /^(\d{4}) (\d{2}) (\d{2})\s(\d{2}):(\d{2}):(\d{2})$/ );
  138: 	my $revision_date = $tkline[11];
  139: 	my ($rev_year,$rev_month,$rev_day) = ( $revision_date =~ /^(\d{4}) (\d{2}) (\d{2})\s(\d{2}):(\d{2}):(\d{2})$/ );
  140: 	my $owner = $tkline[12];
  141: 	my $rights_description;
  142: 	my $copyright = $tkline[13]; # public,domain,default,private (skip if private and domain)
  143: 	# Public means no login required
  144: 
  145: 	if ( $copyright eq 'public' ) {
  146: 		$rights_description = 'LON-CAPA Public Resource. No login required.';
  147: 	} elsif ($copyright eq 'domain') {
  148: 		$rights_description = 'Restricted to certain LON-CAPA domains.';
  149: 	} else {
  150: 		$rights_description = 'LON-CAPA Default Use Restriction. Login required.';
  151: 	}
  152: 	# Domain means restricted to a particular LON-CAPA domain
  153: 	# Defaults mean access open to any registered LON-CAPA user
  154: 	# Private means open only to author of material
  155: 	next if ( $copyright eq 'private');
  156: 	my $platform = "5";     # HTML Browser (not specified but construed from metadata)
  157: #
  158: # Create path
  159: #
  160: 	unless (-e $basepath.'/'.$adom) { mkdir($basepath.'/'.$adom); }
  161: 	unless (-e $basepath.'/'.$adom.'/'.$auname) { 
  162: 	    mkdir($basepath.'/'.$adom.'/'.$auname) || die 'Could not create '.$basepath.'/'.$adom.'/'.$auname;
  163: 	}
  164: 	open(XML,'>'.$basepath.'/'.$adom.'/'.$auname.'/'.$baseid.'.xml');
  165: 	print XML (<<ENDMETA);
  166: <?xml version="1.0" encoding="UTF-8"?>
  167: 
  168: <oaidc:dc xmlns="http://purl.org/dc/elements/1.1/" 
  169:           xmlns:oaidc="http://www.openarchives.org/OAI/2.0/oai_dc/" 
  170:           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  171:           xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ 
  172:                               http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
  173: >
  174:     <title>$title</title>
  175:     <creator>$author_fname $author_lname</creator>
  176:     <identifier>$resourceurl</identifier>
  177:     <subject>$keywords</subject>
  178:     <subject>$subject</subject>
  179:     <language>$primary_language</language>
  180:     <description>$abstract</description>
  181:     <date>$rev_year-$rev_month-$rev_day</date>
  182: </oaidc:dc>
  183: ENDMETA
  184:       close (XML);
  185: }

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