Annotation of loncom/interface/lonsearchcat.pm, revision 1.132
1.98 harris41 1: # The LearningOnline Network with CAPA
1.108 harris41 2: # Search Catalog
3: #
1.132 ! matthew 4: # $Id: lonsearchcat.pm,v 1.131 2002/06/26 18:19:41 matthew Exp $
1.108 harris41 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA 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.
1.98 harris41 14: #
1.108 harris41 15: # LON-CAPA 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 LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
1.1 www 27: #
1.97 harris41 28: # YEAR=2001
1.104 harris41 29: # 3/8, 3/12, 3/13, 3/14, 3/15, 3/19 Scott Harrison
30: # 3/20, 3/21, 3/22, 3/26, 3/27, 4/2, 8/15, 8/24, 8/25 Scott Harrison
1.113 harris41 31: # 10/12,10/14,10/15,10/16,11/28,11/29,12/10,12/12,12/16 Scott Harrison
1.115 harris41 32: # YEAR=2002
33: # 1/17 Scott Harrison
1.121 matthew 34: # 6/17 Matthew Hall
1.104 harris41 35: #
1.121 matthew 36: ###############################################################################
37: ###############################################################################
38:
39: =pod
40:
41: =head1 NAME
42:
43: lonsearchcat
44:
45: =head1 SYNOPSIS
46:
47: Search interface to LON-CAPAs digital library
48:
49: =head1 DESCRIPTION
50:
51: This module enables searching for a distributed browseable catalog.
1.104 harris41 52:
1.121 matthew 53: This is part of the LearningOnline Network with CAPA project
54: described at http://www.lon-capa.org.
55:
56: lonsearchcat presents the user with an interface to search the LON-CAPA
57: digital library. lonsearchcat also initiates the execution of a search
58: by sending the search parameters to LON-CAPA servers. The progress of
59: search (on a server basis) is displayed to the user in a seperate window.
60:
61: =head1 Internals
62:
63: =over 4
64:
65: =cut
66:
67: ###############################################################################
1.98 harris41 68: ###############################################################################
1.121 matthew 69:
1.128 harris41 70: ###############################################################################
1.98 harris41 71: ## ##
72: ## ORGANIZATION OF THIS PERL MODULE ##
73: ## ##
1.105 harris41 74: ## 1. Modules used by this module ##
1.128 harris41 75: ## 2. Variables used throughout the module ##
76: ## 3. handler subroutine called via Apache and mod_perl ##
77: ## 4. Other subroutines ##
1.98 harris41 78: ## ##
79: ###############################################################################
80:
1.1 www 81: package Apache::lonsearchcat;
82:
1.98 harris41 83: # ------------------------------------------------- modules used by this module
1.1 www 84: use strict;
85: use Apache::Constants qw(:common);
1.6 harris41 86: use Apache::lonnet();
87: use Apache::File();
1.7 harris41 88: use CGI qw(:standard);
1.41 harris41 89: use Text::Query;
1.101 harris41 90: use GDBM_File;
1.112 harris41 91: use Apache::loncommon();
1.1 www 92:
1.90 harris41 93: # ---------------------------------------- variables used throughout the module
94:
1.121 matthew 95: ######################################################################
96: ######################################################################
97:
98: =pod
99:
100: =item Global variables
101:
102: =over 4
103:
104: =item $closebutton
105:
106: button that closes the search window
107:
108: =item $importbutton
109:
110: button to take the selecte results and go to group sorting
111:
112: =item %hash
113:
114: The ubiquitous database hash
115:
116: =item $diropendb
117:
118: The full path to the (temporary) search database file. This is set and
119: used in &handler() and is also used in &output_results().
120:
121: =back
122:
123: =cut
124:
125: ######################################################################
126: ######################################################################
127:
1.98 harris41 128: # -- dynamically rendered interface components
1.121 matthew 129: my $closebutton; # button that closes the search window
1.98 harris41 130: my $importbutton; # button to take the selected results and go to group sorting
131:
132: # -- miscellaneous variables
1.121 matthew 133: my %hash; # database hash
1.127 matthew 134: my $diropendb = ""; # db file
1.98 harris41 135:
1.121 matthew 136: ######################################################################
137: ######################################################################
138:
139: =pod
140:
141: =item &handler() - main handler invoked by httpd child
142:
1.124 matthew 143: =item Variables
144:
145: =over 4
146:
147: =item $hidden
148:
149: holds 'hidden' html forms
150:
151: =item $scrout
152:
153: string that holds portions of the screen output
154:
155: =back
156:
1.121 matthew 157: =cut
1.101 harris41 158:
1.121 matthew 159: ######################################################################
160: ######################################################################
1.98 harris41 161: sub handler {
162: my $r = shift;
1.103 harris41 163: untie %hash;
1.98 harris41 164:
165: $r->content_type('text/html');
166: $r->send_http_header;
167: return OK if $r->header_only;
168:
1.121 matthew 169: my $domain = $r->dir_config('lonDefDomain');
1.122 matthew 170: $diropendb= "/home/httpd/perl/tmp/".&Apache::lonnet::escape($domain).
171: "\_".&Apache::lonnet::escape($ENV{'user.name'})."_searchcat.db";
1.101 harris41 172:
1.116 matthew 173: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.124 matthew 174: ['catalogmode','launch','acts','mode','form','element',
175: 'reqinterface']);
176: ##
177: ## Clear out old values from database
178: ##
1.101 harris41 179: if ($ENV{'form.launch'} eq '1') {
180: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
181: &start_fresh_session();
182: untie %hash;
1.122 matthew 183: } else {
1.101 harris41 184: $r->print('<html><head></head><body>Unable to tie hash to db '.
185: 'file</body></html>');
186: return OK;
187: }
188: }
1.124 matthew 189: ##
190: ## Produce some output, so people know it is working
191: ##
1.119 www 192: $r->print("\n");
193: $r->rflush;
1.124 matthew 194: ##
195: ## Configure dynamic components of interface
196: ##
197: my $hidden; # Holds 'hidden' html forms
1.98 harris41 198: if ($ENV{'form.catalogmode'} eq 'interactive') {
199: $hidden="<input type='hidden' name='catalogmode' value='interactive'>".
200: "\n";
201: $closebutton="<input type='button' name='close' value='CLOSE' ".
202: "onClick='self.close()'>"."\n";
1.124 matthew 203: } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
1.98 harris41 204: $hidden=<<END;
205: <input type='hidden' name='catalogmode' value='groupsearch'>
206: END
207: $closebutton=<<END;
208: <input type='button' name='close' value='CLOSE' onClick='self.close()'>
209: END
210: $importbutton=<<END;
211: <input type='button' name='import' value='IMPORT'
212: onClick='javascript:select_group()'>
213: END
214: }
1.117 matthew 215: $hidden .= <<END;
216: <input type='hidden' name='mode' value='$ENV{'form.mode'}'>
217: <input type='hidden' name='form' value='$ENV{'form.form'}'>
218: <input type='hidden' name='element' value='$ENV{'form.element'}'>
219: <input type='hidden' name='date' value='2'>
220: END
1.124 matthew 221: ##
222: ## What are we doing?
223: ##
224: if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
225: # Perform basic search and give results
1.130 matthew 226: return &basicsearch($r,$hidden);
1.124 matthew 227: } elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
228: # Perform advanced search and give results
1.130 matthew 229: return &advancedsearch($r,$hidden);
1.124 matthew 230: } elsif ($ENV{'form.reqinterface'} eq 'advanced') {
231: # Output the advanced interface
232: $r->print(&advanced_search_form($closebutton,$hidden));
233: return OK;
234: } else {
235: # Output normal search interface
236: $r->print(&basic_search_form($closebutton,$hidden));
237: }
238: return OK;
239: }
1.98 harris41 240:
1.124 matthew 241: ######################################################################
242: ######################################################################
243:
244: =pod
245:
246: =item &basic_search_form()
247:
248: Returns a scalar which holds html for the basic search form.
249:
250: =cut
251:
252: ######################################################################
253: ######################################################################
1.3 harris41 254:
1.124 matthew 255: sub basic_search_form{
256: my ($closebutton,$hidden) = @_;
257: my $scrout=<<"ENDDOCUMENT";
258: <html>
259: <head>
260: <title>The LearningOnline Network with CAPA</title>
261: <script type="text/javascript">
262: function openhelp(val) {
263: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
264: 'scrollbars=1,width=600,height=300');
265: openhelpwin.focus();
1.6 harris41 266: }
1.124 matthew 267: </script>
268: </head>
269: <body bgcolor="#FFFFFF">
270: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
271: <h1>Search Catalog</h1>
272: <form method="post" action="/adm/searchcat">
273: $hidden
274: <h3>Basic Search</h3>
275: <p>
1.131 matthew 276: Enter terms or phrases separated by AND, OR, or NOT
1.129 matthew 277: then press SEARCH below.
1.124 matthew 278: </p>
279: <p>
280: <table>
281: <tr><td>
282: ENDDOCUMENT
283: $scrout.=' '.&simpletextfield('basicexp',$ENV{'form.basicexp'},40).
284: ' ';
285: # $scrout.=&simplecheckbox('allversions',$ENV{'form.allversions'});
286: # $scrout.='<font color="#800000">Search historic archives</font>';
287: $scrout.=<<ENDDOCUMENT;
288: </td><td><a href="/adm/searchcat?reqinterface=advanced">Advanced Search</a></td></tr></table>
289: </p>
290: <p>
291: <input type="submit" name="basicsubmit" value='SEARCH' />
292: $closebutton
1.130 matthew 293: <!-- view selection -->
294: <select name="viewselect">
295: <option value="Detailed Citation View" selected="true" >Detailed Citation View</option>
296: <option value="Summary View" >Summary View</option>
297: <option value="Fielded Format">Fielded Format</option>
298: <option value="XML/SGML" >XML/SGML</option>
1.124 matthew 299: </select>
1.130 matthew 300: <!-- end of view selection -->
1.124 matthew 301: <input type="button" value="HELP" onClick="openhelp()" />
302: </p>
303: </form>
304: </body>
305: </html>
306: ENDDOCUMENT
307: return $scrout;
308: }
309: ######################################################################
310: ######################################################################
311:
312: =pod
313:
314: =item &advanced_search_form()
315:
316: Returns a scalar which holds html for the advanced search form.
317:
318: =cut
319:
320: ######################################################################
321: ######################################################################
322:
323: sub advanced_search_form{
324: my ($closebutton,$hidden) = @_;
1.129 matthew 325: my $advanced_buttons = <<"END";
326: <p>
327: <input type="submit" name="advancedsubmit" value='SEARCH' />
328: <input type="reset" name="reset" value='RESET' />
329: $closebutton
330: <input type="button" value="HELP" onClick="openhelp()" />
331: </p>
332: END
1.124 matthew 333: my $scrout=<<"ENDHEADER";
334: <html>
335: <head>
336: <title>The LearningOnline Network with CAPA</title>
337: <script type="text/javascript">
338: function openhelp(val) {
339: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
340: 'scrollbars=1,width=600,height=300');
341: openhelpwin.focus();
1.18 harris41 342: }
1.124 matthew 343: </script>
344: </head>
345: <body bgcolor="#FFFFFF">
346: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1.129 matthew 347: <h1>Advanced Catalog Search</h1>
348: <hr />
1.131 matthew 349: Enter terms or phrases separated by search operators
1.129 matthew 350: such as AND, OR, or NOT.<br />
1.130 matthew 351: <form method="post" action="/adm/searchcat">
1.129 matthew 352: $advanced_buttons
1.124 matthew 353: $hidden
1.129 matthew 354: <table>
1.130 matthew 355: <tr><td><font color="#800000" face="helvetica"><b>VIEW:</b></font></td>
356: <td>
357: <!-- view selection -->
358: <select name="viewselect" size ="1">
359: <option value="Detailed Citation View" selected="true">Detailed Citation View</option>
360: <option value="Summary View">Summary View</option>
361: <option value="Fielded Format">Fielded Format</option>
362: <option value="XML/SGML">XML/SGML</option>
363: </select>
364: <!-- end of view selection -->
365: </td></tr>
1.124 matthew 366: ENDHEADER
1.129 matthew 367: $scrout.=&searchphrasefield('title','title',
1.11 harris41 368: $ENV{'form.title'});
1.129 matthew 369: $scrout.=&searchphrasefield('author','author',
1.11 harris41 370: $ENV{'form.author'});
1.129 matthew 371: $scrout.=&searchphrasefield('subject','subject',
1.11 harris41 372: $ENV{'form.subject'});
1.129 matthew 373: $scrout.=&searchphrasefield('keywords','keywords',
1.11 harris41 374: $ENV{'form.keywords'});
1.129 matthew 375: $scrout.=&searchphrasefield('URL','url',
1.11 harris41 376: $ENV{'form.url'});
1.96 harris41 377: # $scrout.=&searchphrasefield('Limit by version','version',
378: # $ENV{'form.version'});
1.129 matthew 379: $scrout.=&searchphrasefield('notes','notes',
1.11 harris41 380: $ENV{'form.notes'});
1.129 matthew 381: $scrout.=&searchphrasefield('abstract','abstract',
1.11 harris41 382: $ENV{'form.abstract'});
1.129 matthew 383: # Hack - an empty table row.
384: $scrout.="<tr><td> </td><td> </td></tr>\n";
385: $scrout.=&searchphrasefield('file<br />extension','mime',
386: $ENV{'form.mime'});
387: $scrout.="<tr><td> </td><td> </td></tr>\n";
388: $scrout.=&searchphrasefield('publisher<br />owner','owner',
389: $ENV{'form.owner'});
390: $scrout.="</table>\n";
1.131 matthew 391: $ENV{'form.category'}='any' unless length($ENV{'form.category'});
1.132 ! matthew 392: $scrout.=&selectbox('File Category','category',
1.131 matthew 393: $ENV{'form.category'},
394: 'any','Any category',
395: undef,
396: (&Apache::loncommon::filecategories()));
1.11 harris41 397: $ENV{'form.language'}='any' unless length($ENV{'form.language'});
1.132 ! matthew 398: #
! 399: # Allow restriction to multiple domains.
! 400: # I make the crazy assumption that there will never be a domain 'any'.
! 401: #
! 402: my @domains =&Apache::loncommon::get_domains();
! 403: # adjust the size of the select box
! 404: my $size = 4;
! 405: my $size = (scalar @domains < ($size - 1) ? scalar @domains + 1 : $size);
! 406: # standalone machines do not get to choose a domain to search.
! 407: if ((scalar @domains) == 1) {
! 408: $scrout .='<input type="hidden" name="domains" value="any" />'."\n";
! 409: } else {
! 410: $scrout.='<font color="#800000" face="helvetica"><b>'.
! 411: 'DOMAINS</b></font><br />'.
! 412: '<select name="domains" size="'.$size.'" multiple>'."\n".
! 413: '<option name="any" selected>all domains</option>'."\n";
! 414: foreach my $dom (sort @domains) {
! 415: $scrout.="<option name=\"$dom\">$dom</option>\n";
! 416: }
! 417: $scrout.="</select>\n";
! 418: }
! 419: #
! 420: #
! 421: #
1.3 harris41 422: $scrout.=&selectbox('Limit by language','language',
1.111 harris41 423: $ENV{'form.language'},'any','Any Language',
424: \&{Apache::loncommon::languagedescription},
425: (&Apache::loncommon::languageids),
426: );
1.8 harris41 427: # ------------------------------------------------ Compute date selection boxes
428: $scrout.=<<CREATIONDATESTART;
1.3 harris41 429: <p>
430: <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
431: </font>
1.98 harris41 432: <br />
1.8 harris41 433: between:
434: CREATIONDATESTART
1.11 harris41 435: $scrout.=&dateboxes('creationdatestart',1,1,1976,
436: $ENV{'form.creationdatestart_month'},
437: $ENV{'form.creationdatestart_day'},
438: $ENV{'form.creationdatestart_year'},
439: );
1.124 matthew 440: $scrout.="and:\n";
1.11 harris41 441: $scrout.=&dateboxes('creationdateend',12,31,2051,
442: $ENV{'form.creationdateend_month'},
443: $ENV{'form.creationdateend_day'},
444: $ENV{'form.creationdateend_year'},
445: );
1.8 harris41 446: $scrout.="</p>";
447: $scrout.=<<LASTREVISIONDATESTART;
448: <p>
449: <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
450: </b></font>
1.98 harris41 451: <br />between:
1.8 harris41 452: LASTREVISIONDATESTART
1.11 harris41 453: $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
454: $ENV{'form.lastrevisiondatestart_month'},
455: $ENV{'form.lastrevisiondatestart_day'},
456: $ENV{'form.lastrevisiondatestart_year'},
457: );
1.8 harris41 458: $scrout.=<<LASTREVISIONDATEEND;
459: and:
460: LASTREVISIONDATEEND
1.11 harris41 461: $scrout.=&dateboxes('lastrevisiondateend',12,31,2051,
462: $ENV{'form.lastrevisiondateend_month'},
463: $ENV{'form.lastrevisiondateend_day'},
464: $ENV{'form.lastrevisiondateend_year'},
465: );
1.8 harris41 466: $scrout.='</p>';
1.11 harris41 467: $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
1.8 harris41 468: $scrout.=&selectbox('Limit by copyright/distribution','copyright',
1.111 harris41 469: $ENV{'form.copyright'},
470: 'any','Any copyright/distribution',
471: \&{Apache::loncommon::copyrightdescription},
472: (&Apache::loncommon::copyrightids),
473: );
1.14 harris41 474: # ------------------------------------------- Compute customized metadata field
475: $scrout.=<<CUSTOMMETADATA;
476: <p>
1.77 harris41 477: <font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
1.14 harris41 478: </font>
1.77 harris41 479: For resource-specific metadata, enter in an expression in the form of
1.100 harris41 480: <i>key</i>=<i>value</i> separated by operators such as AND, OR or NOT.<br />
1.14 harris41 481: <b>Example:</b> grandmother=75 OR grandfather=85
1.98 harris41 482: <br />
1.14 harris41 483: CUSTOMMETADATA
1.124 matthew 484: $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
1.77 harris41 485: $scrout.=<<CUSTOMSHOW;
486: <p>
487: <font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>
488: </font>
489: Enter in a space-separated list of special metadata fields to show
490: in a fielded listing for each record result.
1.98 harris41 491: <br />
1.77 harris41 492: CUSTOMSHOW
1.124 matthew 493: $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
494: $scrout.=<<ENDDOCUMENT;
1.129 matthew 495: $advanced_buttons
1.8 harris41 496: </form>
497: </body>
498: </html>
499: ENDDOCUMENT
1.124 matthew 500: return $scrout;
501: }
1.8 harris41 502:
1.121 matthew 503: ######################################################################
504: ######################################################################
505:
506: =pod
507:
508: =item &make_persistent()
509:
510: Returns a scalar which holds the current ENV{'form.*'} values in
1.126 matthew 511: a 'hidden' html input tag. This allows search interface information
512: to be somewhat persistent.
1.122 matthew 513:
1.121 matthew 514: =cut
515:
516: ######################################################################
517: ######################################################################
518:
1.98 harris41 519: sub make_persistent {
520: my $persistent='';
1.109 harris41 521: foreach (keys %ENV) {
1.98 harris41 522: if (/^form\./ && !/submit/) {
523: my $name=$_;
524: my $key=$name;
525: $ENV{$key}=~s/\'//g; # do not mess with html field syntax
526: $name=~s/^form\.//;
527: $persistent.=<<END;
1.125 matthew 528: <input type="hidden" name="$name" value="$ENV{$key}" />
1.98 harris41 529: END
530: }
1.109 harris41 531: }
1.98 harris41 532: return $persistent;
533: }
534:
1.122 matthew 535:
536: ######################################################################
537: ######################################################################
538:
539: =pod
540:
541: =item HTML form building functions
542:
543: =over 4
544:
545: =item &simpletextfield()
546:
547: Inputs: $name,$value,$size
548:
549: Returns a text input field with the given name, value, and size.
550: If size is not specified, a value of 20 is used.
551:
552: =item &simplecheckbox()
553:
554: Inputs: $name,$value
555:
556: Returns a simple check box with the given $name.
557: If $value eq 'on' the box is checked.
558:
559: =item &searchphrasefield()
560:
561: Inputs: $title,$name,$value
562:
563: Returns html for a title line and an input field for entering search terms.
564: the instructions "Enter terms or phrases separated by search operators such
565: as AND, OR, or NOT." are given following the title. The entry field (which
566: is where the $name and $value are used) is an 80 column simpletextfield.
567:
568: =item &dateboxes()
569:
1.126 matthew 570: Returns html selection form elements for the specification of
571: the day, month, and year.
572:
1.122 matthew 573: =item &selectbox()
574:
1.129 matthew 575: Returns a scalar containing an html <select> form.
576:
577: Inputs:
578:
579: =over 4
580:
581: =item $title
582:
583: Printed above the select box, in uppercase.
584:
585: =item $name
586:
587: The name element of the <select> tag.
588:
589: =item $default
590:
591: The default value of the form. Can be $anyvalue or in @idlist.
592:
593: =item $anyvalue
594:
595: The <option value="..."> used to indicate a default of
596: none of the values.
597:
598: =item $anytag
599:
600: The text associate with $anyvalue above.
601:
602: =item $functionref
603:
604: Each element in @idlist will be passed as a parameter
605: to the function referenced here. The return value of the function should
606: be a scalar description of the items. If this value is undefined the
607: description of each item in @idlist will be the item name.
608:
609: =item @idlist
610:
611: The items to be selected from. One of these or $anyvalue will be the
612: value returned by the form element, $ENV{form.$name}.
613:
614: =back
1.126 matthew 615:
1.122 matthew 616: =back
617:
618: =cut
619:
620: ######################################################################
621: ######################################################################
1.8 harris41 622:
1.11 harris41 623: sub simpletextfield {
1.122 matthew 624: my ($name,$value,$size)=@_;
625: $size = 20 if (! defined($size));
626: return '<input type="text" name="'.$name.
627: '" size="'.$size.'" value="'.$value.'" />';
1.11 harris41 628: }
629:
630: sub simplecheckbox {
631: my ($name,$value)=@_;
632: my $checked='';
1.129 matthew 633: $checked="checked" if $value eq 'on';
1.122 matthew 634: return '<input type="checkbox" name="'.$name.'" '. $checked . ' />';
1.11 harris41 635: }
636:
1.8 harris41 637: sub searchphrasefield {
638: my ($title,$name,$value)=@_;
639: my $uctitle=uc($title);
1.129 matthew 640: return '<tr><td><font color="#800000" face="helvetica">'.
641: '<b>'.$uctitle.': </b></font></td><td>'.
642: &simpletextfield($name,$value,50)."</td></tr>\n";
1.8 harris41 643: }
1.3 harris41 644:
1.8 harris41 645: sub dateboxes {
1.11 harris41 646: my ($name,$defaultmonth,$defaultday,$defaultyear,
647: $currentmonth,$currentday,$currentyear)=@_;
648: ($defaultmonth,$defaultday,$defaultyear)=('','','');
1.117 matthew 649: #
650: # Day
651: my $day=<<END;
652: <select name="${name}_day">
653: <option value='$defaultday'> </option>
654: END
655: for (my $i = 1; $i<=31; $i++) {
656: $day.="<option value=\"$i\">$i</option>\n";
657: }
658: $day.="</select>\n";
659: $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
660: #
661: # Month
1.11 harris41 662: my $month=<<END;
1.8 harris41 663: <select name="${name}_month">
1.11 harris41 664: <option value='$defaultmonth'> </option>
665: END
1.117 matthew 666: my $i = 1;
667: foreach (qw/January February March April May June
668: July August September October November December /){
669: $month .="<option value=\"$i\">$_</option>\n";
670: $i++;
671: }
672: $month.="</select>\n";
1.11 harris41 673: $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
1.117 matthew 674: #
675: # Year (obviously)
1.11 harris41 676: my $year=<<END;
1.8 harris41 677: <select name="${name}_year">
1.11 harris41 678: <option value='$defaultyear'> </option>
1.3 harris41 679: END
1.117 matthew 680: my $maxyear = 2051;
681: for (my $i = 1976; $i<=$maxyear; $i++) {
682: $year.="<option value=\"$i\">$i</option>\n";
683: }
684: $year.="</select>\n";
1.11 harris41 685: $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
686: return "$month$day$year";
1.3 harris41 687: }
688:
689: sub selectbox {
1.129 matthew 690: my ($title,$name,$default,$anyvalue,$anytag,$functionref,@idlist)=@_;
691: if (! defined($functionref)) { $functionref = sub { $_[0]}; }
1.3 harris41 692: my $uctitle=uc($title);
1.122 matthew 693: my $selout="\n".'<p><font color="#800000" face="helvetica">'.
1.131 matthew 694: '<b>'.$uctitle.': </b></font><select name="'.$name.'">';
1.111 harris41 695: foreach ($anyvalue,@idlist) {
1.122 matthew 696: $selout.='<option value="'.$_.'"';
1.129 matthew 697: if ($_ eq $default and !/^any$/) {
1.122 matthew 698: $selout.=' selected >'.&{$functionref}($_).'</option>';
1.111 harris41 699: }
1.129 matthew 700: elsif ($_ eq $default and /^$anyvalue$/) {
1.122 matthew 701: $selout.=' selected >'.$anytag.'</option>';
1.111 harris41 702: }
703: else {$selout.='>'.&{$functionref}($_).'</option>';}
1.109 harris41 704: }
1.129 matthew 705: return $selout.'</select></p>';
1.6 harris41 706: }
707:
1.122 matthew 708: ######################################################################
709: ######################################################################
710:
711: =pod
712:
1.126 matthew 713: =item &advancedsearch()
714:
715: Parse advanced search results.
1.122 matthew 716:
717: =cut
718:
719: ######################################################################
720: ######################################################################
1.18 harris41 721: sub advancedsearch {
1.130 matthew 722: my ($r,$hidden)=@_;
1.32 harris41 723: my $fillflag=0;
1.64 harris41 724: # Clean up fields for safety
725: for my $field ('title','author','subject','keywords','url','version',
726: 'creationdatestart_month','creationdatestart_day',
727: 'creationdatestart_year','creationdateend_month',
728: 'creationdateend_day','creationdateend_year',
729: 'lastrevisiondatestart_month','lastrevisiondatestart_day',
730: 'lastrevisiondatestart_year','lastrevisiondateend_month',
731: 'lastrevisiondateend_day','lastrevisiondateend_year',
732: 'notes','abstract','mime','language','owner',
1.131 matthew 733: 'custommetadata','customshow','category') {
1.101 harris41 734: $ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
1.64 harris41 735: }
1.117 matthew 736: foreach ('mode','form','element') {
737: # is this required? Hmmm.
738: next unless (exists($ENV{"form.$_"}));
739: $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
740: $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
741: }
1.131 matthew 742: # Preprocess the category form element.
743: if ($ENV{'form.category'} ne 'any') {
744: my @extensions = &Apache::loncommon::filecategorytypes
745: ($ENV{'form.category'});
746: $ENV{'form.mime'} = join ' OR ',@extensions;
747: }
1.90 harris41 748: # Check to see if enough information was filled in
1.32 harris41 749: for my $field ('title','author','subject','keywords','url','version',
750: 'notes','abstract','mime','language','owner',
751: 'custommetadata') {
1.40 harris41 752: if (&filled($ENV{"form.$field"})) {
1.32 harris41 753: $fillflag++;
754: }
755: }
756: unless ($fillflag) {
757: &output_blank_field_error($r);
758: return OK;
759: }
1.90 harris41 760: # Turn the form input into a SQL-based query
1.39 harris41 761: my $query='';
1.45 harris41 762: my @queries;
1.90 harris41 763: # Evaluate logical expression AND/OR/NOT phrase fields.
1.58 harris41 764: foreach my $field ('title','author','subject','notes','abstract','url',
1.129 matthew 765: 'keywords','version','owner','mime') {
1.44 harris41 766: if ($ENV{'form.'.$field}) {
1.45 harris41 767: push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
1.131 matthew 768: }
1.44 harris41 769: }
1.90 harris41 770: # Evaluate option lists
1.58 harris41 771: if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
1.90 harris41 772: push @queries,"(language like \"$ENV{'form.language'}\")";
1.58 harris41 773: }
774: if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
1.90 harris41 775: push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
1.58 harris41 776: }
1.90 harris41 777: # Evaluate date windows
1.60 harris41 778: my $datequery=&build_date_queries(
779: $ENV{'form.creationdatestart_month'},
780: $ENV{'form.creationdatestart_day'},
781: $ENV{'form.creationdatestart_year'},
782: $ENV{'form.creationdateend_month'},
783: $ENV{'form.creationdateend_day'},
784: $ENV{'form.creationdateend_year'},
785: $ENV{'form.lastrevisiondatestart_month'},
786: $ENV{'form.lastrevisiondatestart_day'},
787: $ENV{'form.lastrevisiondatestart_year'},
788: $ENV{'form.lastrevisiondateend_month'},
789: $ENV{'form.lastrevisiondateend_day'},
790: $ENV{'form.lastrevisiondateend_year'},
791: );
1.90 harris41 792: # Test to see if date windows are legitimate
1.61 harris41 793: if ($datequery=~/^Incorrect/) {
794: &output_date_error($r,$datequery);
795: return OK;
796: }
797: elsif ($datequery) {
1.60 harris41 798: push @queries,$datequery;
799: }
1.90 harris41 800: # Process form information for custom metadata querying
1.76 harris41 801: my $customquery='';
1.64 harris41 802: if ($ENV{'form.custommetadata'}) {
803: $customquery=&build_custommetadata_query('custommetadata',
804: $ENV{'form.custommetadata'});
805: }
1.83 harris41 806: my $customshow='';
807: if ($ENV{'form.customshow'}) {
808: $customshow=$ENV{'form.customshow'};
809: $customshow=~s/[^\w\s]//g;
810: my @fields=split(/\s+/,$customshow);
811: $customshow=join(" ",@fields);
812: }
1.132 ! matthew 813: ##
! 814: ## Deal with restrictions to given domains
! 815: ##
! 816: my $libraries_to_query = undef;
! 817: # $ENV{'form.domains'} can be either a scalar or an array reference.
! 818: # We need an array.
! 819: my @allowed_domains = (ref($ENV{'form.domains'}) ? @{$ENV{'form.domains'}}
! 820: : ($ENV{'form.domains'}) );
! 821: my %domain_hash = ();
! 822: foreach (@allowed_domains) {
! 823: $domain_hash{$_}++;
! 824: }
! 825: foreach (keys(%Apache::lonnet::libserv)) {
! 826: if ($_ eq 'any') {
! 827: $libraries_to_query = undef;
! 828: last;
! 829: }
! 830: if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
! 831: push @$libraries_to_query,$_;
! 832: }
! 833: }
! 834: if (defined($libraries_to_query)) {
! 835: &Apache::lonnet::logthis("libraries: @$libraries_to_query");
! 836: } else {
! 837: &Apache::lonnet::logthis("libraries: undef");
! 838: }
! 839: #
1.90 harris41 840: # Send query statements over the network to be processed by either the SQL
841: # database or a recursive scheme of 'grep'-like actions (for custom
842: # metadata).
1.45 harris41 843: if (@queries) {
1.58 harris41 844: $query=join(" AND ",@queries);
1.46 harris41 845: $query="select * from metadata where $query";
1.90 harris41 846: my $reply; # reply hash reference
1.83 harris41 847: unless ($customquery or $customshow) {
1.132 ! matthew 848: $reply=&Apache::lonnet::metadata_query($query,undef,undef,
! 849: $libraries_to_query);
1.76 harris41 850: }
851: else {
1.83 harris41 852: $reply=&Apache::lonnet::metadata_query($query,
1.132 ! matthew 853: $customquery,$customshow,
! 854: $libraries_to_query);
1.76 harris41 855: }
1.130 matthew 856: &output_results('Advanced',$r,$customquery,$reply,$hidden);
1.126 matthew 857: return OK;
858: } elsif ($customquery) {
1.90 harris41 859: my $reply; # reply hash reference
1.86 harris41 860: $reply=&Apache::lonnet::metadata_query('',
1.132 ! matthew 861: $customquery,$customshow,
! 862: $libraries_to_query);
1.130 matthew 863: &output_results('Advanced',$r,$customquery,$reply,$hidden);
1.126 matthew 864: return OK;
1.45 harris41 865: }
1.92 harris41 866: # should not get to this point
867: return 'Error. Should not have gone to this point.';
1.18 harris41 868: }
869:
1.122 matthew 870: ######################################################################
871: ######################################################################
872:
873: =pod
874:
875: =item &basicsearch()
876:
1.126 matthew 877: Parse basic search form.
878:
1.122 matthew 879: =cut
880:
881: ######################################################################
882: ######################################################################
1.6 harris41 883: sub basicsearch {
1.130 matthew 884: my ($r,$hidden)=@_;
1.64 harris41 885: # Clean up fields for safety
886: for my $field ('basicexp') {
887: $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
888: }
1.117 matthew 889: foreach ('mode','form','element') {
890: # is this required? Hmmm.
891: next unless (exists($ENV{"form.$_"}));
892: $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
893: $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
894: }
1.64 harris41 895:
1.90 harris41 896: # Check to see if enough is filled in
1.26 harris41 897: unless (&filled($ENV{'form.basicexp'})) {
1.24 harris41 898: &output_blank_field_error($r);
899: return OK;
900: }
1.22 harris41 901:
1.90 harris41 902: # Build SQL query string based on form page
1.39 harris41 903: my $query='';
1.33 harris41 904: my $concatarg=join('," ",',
1.124 matthew 905: ('title', 'author', 'subject', 'notes', 'abstract',
906: 'keywords'));
1.95 harris41 907: $concatarg='title' if $ENV{'form.titleonly'};
1.94 harris41 908:
909: $query=&build_SQL_query('concat('.$concatarg.')',$ENV{'form.'.'basicexp'});
910:
1.90 harris41 911: # Get reply (either a hash reference to filehandles or bad connection)
1.126 matthew 912: # &Apache::lonnet::logthis("metadata query started:".time);
1.94 harris41 913: my $reply=&Apache::lonnet::metadata_query('select * from metadata where '.$query);
1.126 matthew 914: # &Apache::lonnet::logthis("metadata query finished:".time);
1.90 harris41 915: # Output search results
1.98 harris41 916:
1.130 matthew 917: &output_results('Basic',$r,$query,$reply,$hidden);
1.90 harris41 918:
1.18 harris41 919: return OK;
1.22 harris41 920: }
921:
1.122 matthew 922:
923: ######################################################################
924: ######################################################################
925:
926: =pod
927:
928: =item &build_SQL_query()
929:
1.126 matthew 930: Builds a SQL query string from a logical expression with AND/OR keywords
931: using Text::Query and &recursive_SQL_query_builder()
932:
1.122 matthew 933: =cut
934:
935: ######################################################################
936: ######################################################################
1.98 harris41 937: sub build_SQL_query {
938: my ($field_name,$logic_statement)=@_;
939: my $q=new Text::Query('abc',
940: -parse => 'Text::Query::ParseAdvanced',
941: -build => 'Text::Query::Build');
942: $q->prepare($logic_statement);
943: my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
944: my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
945: return $sql_query;
946: }
947:
1.122 matthew 948: ######################################################################
949: ######################################################################
950:
951: =pod
952:
953: =item &build_custommetadata_query()
954:
1.126 matthew 955: Constructs a custom metadata query using a rather heinous regular
956: expression.
957:
1.122 matthew 958: =cut
959:
960: ######################################################################
961: ######################################################################
1.98 harris41 962: sub build_custommetadata_query {
963: my ($field_name,$logic_statement)=@_;
964: my $q=new Text::Query('abc',
965: -parse => 'Text::Query::ParseAdvanced',
966: -build => 'Text::Query::BuildAdvancedString');
967: $q->prepare($logic_statement);
968: my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
969: # quick fix to change literal into xml tag-matching
970: # will eventually have to write a separate builder module
1.122 matthew 971: # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
972: $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
973: /\\<$1\\>?# \<wordone\>
974: \[\^\\<\]?# [^\<]
975: \*$2\[\^\\<\]?# *wordtwo[^\<]
976: \*\\<\\\/$1\\>?# *\<\/wordone\>
977: /g;
1.98 harris41 978: return $matchexp;
979: }
980:
1.122 matthew 981: ######################################################################
982: ######################################################################
983:
984: =pod
985:
986: =item &recursive_SQL_query_build()
987:
1.126 matthew 988: Recursively constructs an SQL query. Takes as input $dkey and $pattern.
989:
1.122 matthew 990: =cut
991:
992: ######################################################################
993: ######################################################################
1.98 harris41 994: sub recursive_SQL_query_build {
995: my ($dkey,$pattern)=@_;
996: my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
997: return $pattern unless @matches;
998: foreach my $match (@matches) {
999: $match=~/\[ (\w+)\s(.*) \]/;
1000: my ($key,$value)=($1,$2);
1001: my $replacement='';
1002: if ($key eq 'literal') {
1003: $replacement="($dkey like \"\%$value\%\")";
1004: }
1005: elsif ($key eq 'not') {
1006: $value=~s/like/not like/;
1007: # $replacement="($dkey not like $value)";
1008: $replacement="$value";
1009: }
1010: elsif ($key eq 'and') {
1011: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1012: $replacement="($1 AND $2)";
1013: }
1014: elsif ($key eq 'or') {
1015: $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
1016: $replacement="($1 OR $2)";
1017: }
1018: substr($pattern,
1019: index($pattern,$match),
1020: length($match),
1021: $replacement
1022: );
1023: }
1024: &recursive_SQL_query_build($dkey,$pattern);
1025: }
1.22 harris41 1026:
1.122 matthew 1027: ######################################################################
1028: ######################################################################
1029:
1030: =pod
1031:
1032: =item &build_date_queries()
1033:
1.126 matthew 1034: Builds a SQL logic query to check time/date entries.
1035: Also reports errors (check for /^Incorrect/).
1036:
1.122 matthew 1037: =cut
1038:
1039: ######################################################################
1040: ######################################################################
1.98 harris41 1041: sub build_date_queries {
1042: my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
1043: $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
1044: my @queries;
1045: if ($cmonth1 or $cday1 or $cyear1 or $cmonth2 or $cday2 or $cyear2) {
1046: unless ($cmonth1 and $cday1 and $cyear1 and
1047: $cmonth2 and $cday2 and $cyear2) {
1048: return "Incorrect entry for the creation date. You must specify ".
1049: "a starting month, day, and year and an ending month, ".
1050: "day, and year.";
1051: }
1052: my $cnumeric1=sprintf("%d%2d%2d",$cyear1,$cmonth1,$cday1);
1053: $cnumeric1+=0;
1054: my $cnumeric2=sprintf("%d%2d%2d",$cyear2,$cmonth2,$cday2);
1055: $cnumeric2+=0;
1056: if ($cnumeric1>$cnumeric2) {
1057: return "Incorrect entry for the creation date. The starting ".
1058: "date must occur before the ending date.";
1059: }
1060: my $cquery="(creationdate BETWEEN '$cyear1-$cmonth1-$cday1' AND '".
1061: "$cyear2-$cmonth2-$cday2 23:59:59')";
1062: push @queries,$cquery;
1063: }
1064: if ($lmonth1 or $lday1 or $lyear1 or $lmonth2 or $lday2 or $lyear2) {
1065: unless ($lmonth1 and $lday1 and $lyear1 and
1066: $lmonth2 and $lday2 and $lyear2) {
1067: return "Incorrect entry for the last revision date. You must ".
1068: "specify a starting month, day, and year and an ending ".
1069: "month, day, and year.";
1070: }
1071: my $lnumeric1=sprintf("%d%2d%2d",$lyear1,$lmonth1,$lday1);
1072: $lnumeric1+=0;
1073: my $lnumeric2=sprintf("%d%2d%2d",$lyear2,$lmonth2,$lday2);
1074: $lnumeric2+=0;
1075: if ($lnumeric1>$lnumeric2) {
1076: return "Incorrect entry for the last revision date. The ".
1077: "starting date must occur before the ending date.";
1078: }
1079: my $lquery="(lastrevisiondate BETWEEN '$lyear1-$lmonth1-$lday1' AND '".
1080: "$lyear2-$lmonth2-$lday2 23:59:59')";
1081: push @queries,$lquery;
1082: }
1083: if (@queries) {
1084: return join(" AND ",@queries);
1085: }
1086: return '';
1.18 harris41 1087: }
1.6 harris41 1088:
1.122 matthew 1089: ######################################################################
1090: ######################################################################
1091:
1092: =pod
1093:
1094: =item &output_results()
1095:
1096: Format and output results based on a reply list.
1097: There are two windows that this function writes to. The main search
1098: window ("srch") has a listing of the results. A secondary window ("popwin")
1099: gives the status of the network search (time elapsed, number of machines
1100: contacted, etc.)
1101:
1102: =cut
1103:
1104: ######################################################################
1105: ######################################################################
1.18 harris41 1106: sub output_results {
1.126 matthew 1107: # &Apache::lonnet::logthis("output_results:".time);
1.101 harris41 1108: my $fnum; # search result counter
1.130 matthew 1109: my ($mode,$r,$query,$replyref,$hidden)=@_;
1.92 harris41 1110: my %rhash=%{$replyref};
1.44 harris41 1111: my $compiledresult='';
1.125 matthew 1112: my $timeremain=300; # (seconds)
1.98 harris41 1113: my $elapsetime=0;
1.93 harris41 1114: my $resultflag=0;
1115: my $tflag=1;
1.130 matthew 1116: my $viewselect=$ENV{'form.viewselect'};
1.125 matthew 1117: #
1.93 harris41 1118: # make query information persistent to allow for subsequent revision
1119: my $persistent=&make_persistent();
1.130 matthew 1120: # spit out the results header
1121: $r->print(&search_results_header($mode));
1.98 harris41 1122: $r->rflush();
1123: # begin showing the cataloged results
1.129 matthew 1124: my $action = "/adm/searchcat";
1125: if ($mode eq 'Basic') {
1126: $action .= "?reqinterface=basic";
1127: } elsif ($mode eq 'Advanced') {
1128: $action .= "?reqinterface=advanced";
1129: }
1130: $r->print(<<CATALOGCONTROLS);
1131: <form name='results' method="post" action="$action">
1.118 www 1132: $hidden
1.98 harris41 1133: <input type='hidden' name='acts' value='' />
1.93 harris41 1134: <input type='button' value='Revise search request'
1.98 harris41 1135: onClick='this.form.submit();' />
1136: $importbutton
1.93 harris41 1137: $closebutton
1138: $persistent
1.98 harris41 1139: <hr />
1140: CATALOGCONTROLS
1.125 matthew 1141: #
1142: # make the pop-up window for status
1143: #
1144: $r->print(&make_popwin(%rhash));
1.92 harris41 1145: $r->rflush();
1.125 matthew 1146: ##
1147: ## Prepare for the main loop below
1148: ##
1.93 harris41 1149: my $servercount=0;
1.98 harris41 1150: my $hitcountsum=0;
1.125 matthew 1151: my $servernum=(keys %rhash);
1152: my $serversleft=$servernum;
1153: ##
1154: ## Run until we run out of time or we run out of servers
1155: ##
1156: while($serversleft && $timeremain) {
1157: ##
1158: ## %rhash has servers deleted from it as results come in
1159: ## (within the foreach loop below).
1160: ##
1161: foreach my $rkey (sort keys %rhash) {
1.126 matthew 1162: # &Apache::lonnet::logthis("Server $rkey:".time);
1.93 harris41 1163: $servercount++;
1164: $compiledresult='';
1.92 harris41 1165: my $reply=$rhash{$rkey};
1.18 harris41 1166: my @results;
1.93 harris41 1167: if ($reply eq 'con_lost') {
1.125 matthew 1168: &popwin_imgupdate($r,$rkey,"srvbad.gif");
1169: $serversleft--;
1170: delete $rhash{$rkey};
1171: } else {
1172: # must do since 'use strict' checks for tainting
1173: $reply=~/^([\.\w]+)$/;
1174: my $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
1.93 harris41 1175: $reply=~/(.*?)\_/;
1.126 matthew 1176: for (my $counter=0;$counter<2;$counter++) {
1177: if (-e $replyfile && ! -e "$replyfile.end") {
1178: &popwin_imgupdate($r,$rkey,"srvhalf.gif");
1179: &popwin_js($r,'popwin.hc["'.$rkey.'"]='.
1180: '"still transferring..."'.';');
1181: }
1182: # Are we finished transferring data?
1183: if (-e "$replyfile.end") {
1184: $serversleft--;
1185: delete $rhash{$rkey};
1186: if (-s $replyfile) {
1187: &popwin_imgupdate($r,$rkey,"srvgood.gif");
1188: my $fh;
1189: unless ($fh=Apache::File->new($replyfile)){
1190: # Is it really appropriate to die on this error?
1191: $r->print('ERROR: file '.
1192: $replyfile.' cannot be opened');
1193: return OK;
1194: }
1195: @results=<$fh> if $fh;
1.127 matthew 1196: my $hits =@results;
1.126 matthew 1197: &popwin_js($r,'popwin.hc["'.$rkey.'"]='.
1.127 matthew 1198: $hits.';');
1199: $hitcountsum+=$hits;
1.126 matthew 1200: &popwin_js($r,'popwin.document.forms.popremain.'.
1201: 'numhits.value='.$hitcountsum.';');
1202: } else {
1203: &popwin_imgupdate($r,$rkey,"srvempty.gif");
1204: &popwin_js($r,'popwin.hc["'.$rkey.'"]=0;');
1205: }
1206: last;
1207: } # end of if ( -e "$replyfile.end")
1208: last unless $timeremain;
1209: sleep 1; # wait for daemons to write files?
1210: $timeremain--;
1211: $elapsetime++;
1212: &popwin_js($r,"popwin.document.popremain.".
1213: "elapsetime.value=$elapsetime;");
1.93 harris41 1214: }
1.117 matthew 1215: &popwin_js($r,'popwin.document.whirly.'.
1216: 'src="/adm/lonIcons/lonanimend.gif";');
1.125 matthew 1217: } # end of if ($reply eq 'con_lost') else statement
1.126 matthew 1218: my %Fields = undef; # Holds the data to be sent to the various
1219: # *_view routines.
1220: my ($extrashow,$customfields,$customhash) = &handle_custom_fields(\@results);
1221: my @customfields = @$customfields;
1222: my %customhash = %$customhash;
1223: untie %hash if (keys %hash);
1224: #
1225: if (! tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
1226: $r->print('<html><head></head><body>Unable to tie hash to db '.
1227: 'file</body></html>');
1228: } else {
1.101 harris41 1229: if ($ENV{'form.launch'} eq '1') {
1230: &start_fresh_session();
1231: }
1232: foreach my $result (@results) {
1233: next if $result=~/^custom\=/;
1234: chomp $result;
1235: next unless $result;
1.126 matthew 1236: %Fields = &parse_raw_result($result,$rkey);
1237: $Fields{'extrashow'}=$extrashow;
1.101 harris41 1238: if ($extrashow) {
1239: foreach my $field (@customfields) {
1240: my $value='';
1.126 matthew 1241: $value = $1 if ($customhash{$Fields{'url'}}=~/\<{$field}[^\>]*\>(.*?)\<\/{$field}[^\>]*\>/s);
1242: $Fields{'extrashow'}=~s/\<\!\-\- $field \-\-\>/ $value/g;
1243: }
1244: }
1245: $compiledresult.="\n<p>\n";
1246: if ($ENV{'form.catalogmode'} eq 'interactive') {
1247: my $titleesc=$Fields{'title'};
1248: $titleesc=~s/\'/\\'/; # '
1249: $compiledresult.=<<END if ($ENV{'form.catalogmode'} eq 'interactive');
1.8 harris41 1250: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
1.126 matthew 1251: onClick="javascript:select_data('$titleesc','$Fields{'url'}')">
1.8 harris41 1252: </font>
1.98 harris41 1253: <br />
1254: END
1.115 harris41 1255: }
1.101 harris41 1256: if ($ENV{'form.catalogmode'} eq 'groupsearch') {
1257: $fnum+=0;
1.126 matthew 1258: $hash{"pre_${fnum}_link"}=$Fields{'url'};
1259: $hash{"pre_${fnum}_title"}=$Fields{'title'};
1.101 harris41 1260: $compiledresult.=<<END;
1.118 www 1261: <font size='-1'>
1262: <input type="checkbox" name="returnvalues" value="SELECT"
1.98 harris41 1263: onClick="javascript:queue($fnum)" />
1264: </font>
1265: <br />
1.8 harris41 1266: END
1.101 harris41 1267: # <input type="hidden" name="title$fnum" value="$title" />
1268: # <input type="hidden" name="url$fnum" value="$url" />
1269: $fnum++;
1270: }
1271: if ($viewselect eq 'Detailed Citation View') {
1.126 matthew 1272: $compiledresult.=&detailed_citation_view
1273: (%Fields, hostname => $rkey );
1.101 harris41 1274: }
1275: elsif ($viewselect eq 'Summary View') {
1.126 matthew 1276: $compiledresult.=&summary_view
1277: (%Fields, hostname => $rkey );
1.101 harris41 1278: }
1279: elsif ($viewselect eq 'Fielded Format') {
1.126 matthew 1280: $compiledresult.=&fielded_format_view
1281: (%Fields, hostname => $rkey );
1.101 harris41 1282: }
1283: elsif ($viewselect eq 'XML/SGML') {
1.126 matthew 1284: $compiledresult.=&xml_sgml_view
1285: (%Fields, hostname => $rkey );
1.101 harris41 1286: }
1.130 matthew 1287: if ($compiledresult or $servercount!=$servernum) {
1288: $compiledresult.="<hr align='left' width='200' noshade />";
1289: }
1.101 harris41 1290: }
1291: untie %hash;
1.18 harris41 1292: }
1.93 harris41 1293: if ($compiledresult) {
1294: $resultflag=1;
1.126 matthew 1295: $r->print($compiledresult);
1.18 harris41 1296: }
1.93 harris41 1297: my $percent=sprintf('%3.0f',($servercount/$servernum*100));
1.126 matthew 1298: } # End of foreach loop over servers remaining
1299: } # End of big loop - while($serversleft && $timeremain)
1.93 harris41 1300: unless ($resultflag) {
1301: $r->print("\nThere were no results that matched your query\n");
1.43 harris41 1302: }
1.100 harris41 1303: # $r->print('<script type="text/javascript">'.'popwin.close()</script>'."\n"); $r->rflush();
1.126 matthew 1304: $r->print("</body>\n</html>\n");
1305: return;
1306: }
1307:
1308: ###########################################################
1309: ###########################################################
1310:
1311: =pod
1312:
1313: =item &parse_raw_result()
1314:
1315: Takes a line from the file of results and parse it. Returns a hash
1316: with keys for the following fields:
1317: 'title', 'author', 'subject', 'url', 'keywords', 'version', 'notes',
1318: 'abstract', 'mime', 'lang', 'owner', 'copyright', 'creationdate',
1319: 'lastrevisiondate'.
1320:
1321: In addition, the following tags are set by calling the appropriate
1322: lonnet function: 'language', 'cprtag', 'mimetag'.
1323:
1324: The 'title' field is set to "Untitled" if the title field is blank.
1325:
1326: 'abstract' and 'keywords' are truncated to 200 characters.
1327:
1328: =cut
1329:
1330: ###########################################################
1331: ###########################################################
1332: sub parse_raw_result {
1333: my ($result,$hostname) = @_;
1334: # Check for a comma - if it is there then we do not need to unescape the
1335: # string. There seems to be some kind of problem with some items in
1336: # the database - the entire string gets sent out unescaped...?
1337: unless ($result =~ /,/) {
1338: $result = &Apache::lonnet::unescape($result);
1339: }
1340: my @fields=map {
1341: &Apache::lonnet::unescape($_);
1342: } (split(/\,/,$result));
1343: my ($title,$author,$subject,$url,$keywords,$version,
1344: $notes,$abstract,$mime,$lang,
1345: $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
1346: my %Fields =
1347: ( title => &Apache::lonnet::unescape($title),
1348: author => &Apache::lonnet::unescape($author),
1349: subject => &Apache::lonnet::unescape($subject),
1350: url => &Apache::lonnet::unescape($url),
1351: keywords => &Apache::lonnet::unescape($keywords),
1352: version => &Apache::lonnet::unescape($version),
1353: notes => &Apache::lonnet::unescape($notes),
1354: abstract => &Apache::lonnet::unescape($abstract),
1355: mime => &Apache::lonnet::unescape($mime),
1356: lang => &Apache::lonnet::unescape($lang),
1357: owner => &Apache::lonnet::unescape($owner),
1358: copyright => &Apache::lonnet::unescape($copyright),
1359: creationdate => &Apache::lonnet::unescape($creationdate),
1360: lastrevisiondate => &Apache::lonnet::unescape($lastrevisiondate)
1361: );
1362: $Fields{'language'} =
1363: &Apache::loncommon::languagedescription($Fields{'lang'});
1364: $Fields{'copyrighttag'} =
1365: &Apache::loncommon::copyrightdescription($Fields{'copyright'});
1366: $Fields{'mimetag'} =
1367: &Apache::loncommon::filedescription($Fields{'mime'});
1368: # Put spaces in the keyword list, if needed.
1369: $Fields{'keywords'}=~ s/,([A-z])/, $1/g;
1370: if ($Fields{'title'}=~ /^\s*$/ ) {
1371: $Fields{'title'}='Untitled';
1372: }
1373: unless ($ENV{'user.adv'}) {
1374: $Fields{'keywords'} = '- not displayed -';
1375: $Fields{'notes'} = '- not displayed -';
1376: $Fields{'abstract'} = '- not displayed -';
1377: $Fields{'subject'} = '- not displayed -';
1378: }
1379: if (length($Fields{'abstract'})>200) {
1380: $Fields{'abstract'} =
1381: substr($Fields{'abstract'},0,200).'...';
1382: }
1383: if (length($Fields{'keywords'})>200) {
1384: $Fields{'keywords'} =
1385: substr($Fields{'keywords'},0,200).'...';
1386: }
1387: return %Fields;
1388: }
1389:
1390: ###########################################################
1391: ###########################################################
1392:
1393: =pod
1394:
1395: =item &handle_custom_fields()
1396:
1397: =cut
1398:
1399: ###########################################################
1400: ###########################################################
1401: sub handle_custom_fields {
1402: my @results = @{shift()};
1403: my $customshow='';
1404: my $extrashow='';
1405: my @customfields;
1406: if ($ENV{'form.customshow'}) {
1407: $customshow=$ENV{'form.customshow'};
1408: $customshow=~s/[^\w\s]//g;
1409: my @fields=map {
1410: "<font color=\"#008000\">$_:</font><!-- $_ -->";
1411: } split(/\s+/,$customshow);
1412: @customfields=split(/\s+/,$customshow);
1413: if ($customshow) {
1414: $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
1415: }
1416: }
1417: my $customdata='';
1418: my %customhash;
1419: foreach my $result (@results) {
1420: if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
1421: my $tmp=$result;
1422: $tmp=~s/^custom\=//;
1423: my ($k,$v)=map {&Apache::lonnet::unescape($_);
1424: } split(/\,/,$tmp);
1425: $customhash{$k}=$v;
1426: }
1427: }
1428: return ($extrashow,\@customfields,\%customhash);
1.41 harris41 1429: }
1430:
1.122 matthew 1431: ######################################################################
1432: ######################################################################
1433:
1.125 matthew 1434: =pod
1435:
1436: =item &search_results_header
1437:
1.130 matthew 1438: Output the proper html headers and javascript code to deal with different
1439: calling modes.
1440:
1441: Takes most inputs directly from %ENV, except $mode.
1442:
1443: =over 4
1444:
1445: =item $mode is either (at this writing) 'Basic' or 'Advanced'
1446:
1447: =back
1.126 matthew 1448:
1.130 matthew 1449: The following environment variables are checked:
1.126 matthew 1450:
1451: =over 4
1452:
1453: =item 'form.catalogmode'
1454:
1455: Checked for 'interactive' and 'groupsearch'.
1456:
1457: =item 'form.mode'
1458:
1459: Checked for existance & 'edit' mode.
1460:
1461: =item 'form.form'
1462:
1463: =item 'form.element'
1464:
1465: =back
1466:
1.125 matthew 1467: =cut
1468:
1469: ######################################################################
1470: ######################################################################
1471: sub search_results_header {
1.130 matthew 1472: my ($mode) = @_;
1473: $mode = lc($mode);
1474: my $title;
1475: if ($mode eq 'advanced') {
1476: $title = "Advanced Search Results";
1477: } elsif ($mode eq 'basic') {
1478: $title = "Basic Search Results";
1479: }
1.125 matthew 1480: my $result = '';
1481: # output beginning of search page
1482: $result.=<<BEGINNING;
1483: <html>
1484: <head>
1.130 matthew 1485: <title>$title</title>
1.125 matthew 1486: BEGINNING
1487: # conditional output of script functions dependent on the mode in
1488: # which the search was invoked
1489: if ($ENV{'form.catalogmode'} eq 'interactive'){
1490: if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
1491: $result.=<<SCRIPT;
1492: <script type="text/javascript">
1493: function select_data(title,url) {
1494: changeTitle(title);
1495: changeURL(url);
1496: self.close();
1497: }
1498: function changeTitle(val) {
1499: if (opener.inf.document.forms.resinfo.elements.t) {
1500: opener.inf.document.forms.resinfo.elements.t.value=val;
1501: }
1502: }
1503: function changeURL(val) {
1504: if (opener.inf.document.forms.resinfo.elements.u) {
1505: opener.inf.document.forms.resinfo.elements.u.value=val;
1506: }
1507: }
1508: </script>
1509: SCRIPT
1510: } elsif ($ENV{'form.mode'} eq 'edit') {
1511: my $form = $ENV{'form.form'};
1512: my $element = $ENV{'form.element'};
1513: $result.=<<SCRIPT;
1514: <script type="text/javascript">
1515: function select_data(title,url) {
1516: changeURL(url);
1517: self.close();
1518: }
1519: function changeTitle(val) {
1520: }
1521: function changeURL(val) {
1522: if (window.opener.document) {
1523: window.opener.document.forms["$form"].elements["$element"].value=val;
1524: } else {
1525: var url = 'forms[\"$form\"].elements[\"$element\"].value';
1526: alert("Unable to transfer data to "+url);
1527: }
1528: }
1529: </script>
1530: SCRIPT
1531: }
1532: }
1533: $result.=<<SCRIPT if $ENV{'form.catalogmode'} eq 'groupsearch';
1534: <script type="text/javascript">
1535: function select_data(title,url) {
1536: // alert('DEBUG: Should be storing '+title+' and '+url);
1537: }
1538: function queue(val) {
1539: if (eval("document.forms.results.returnvalues["+val+"].checked")) {
1540: document.forms.results.acts.value+='1a'+val+'b';
1541: }
1542: else {
1543: document.forms.results.acts.value+='0a'+val+'b';
1544: }
1545: }
1546: function select_group() {
1547: window.location=
1548: "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
1549: document.forms.results.acts.value;
1550: }
1551: </script>
1552: SCRIPT
1553: $result.=<<SCRIPT;
1554: <script type="text/javascript">
1555: function displayinfo(val) {
1556: popwin.document.forms.popremain.sdetails.value=val;
1557: }
1558: function openhelp(val) {
1559: openhelpwin=open('/adm/help/searchcat.html','helpscreen',
1560: 'scrollbars=1,width=400,height=300');
1561: openhelpwin.focus();
1562: }
1563: function abortsearch(val) {
1564: popwin.close();
1565: }
1566: </script>
1567: SCRIPT
1.130 matthew 1568: $result.=<<END;
1569: </head>
1570: <body bgcolor="#ffffff">
1571: <img align=right src=/adm/lonIcons/lonlogos.gif>
1572: <h1>$title</h1>
1573: END
1.125 matthew 1574: return $result;
1575: }
1576:
1577: ######################################################################
1578: ######################################################################
1579:
1580: =pod
1581:
1582: =item &make_popwin()
1583:
1584: Returns html with javascript in it to open up the status window.
1585:
1586: =cut
1587:
1588: ######################################################################
1589: ######################################################################
1590: sub make_popwin {
1591: my %rhash = @_;
1592: my $servernum=(keys %rhash);
1593: my $hcinit;
1594: my $grid="'<br />'+\n";
1595: # $sn is the server number, used ONLY to make sure we have
1596: # rows of 10 each. No longer used to index images.
1597: my $sn=1;
1598: foreach my $sk (sort keys %rhash) {
1599: # '<a href="
1600: $grid.="'<a href=\"";
1601: # javascript:displayinfo('+
1602: $grid.="javascript:opener.displayinfo('+";
1603: # "'"+'key
1604: $grid.="\"'\"+'";
1605: $grid.=$sk;
1606: my $hc;
1607: if ($rhash{$sk} eq 'con_lost') {
1608: $hc="BAD CONNECTION, CONTACT SYSTEM ADMINISTRATOR ";
1609: }
1610: else {
1611: $hc="'+\"'\"+\"+hc['$sk']+\"+\"'\"+'";
1612: $hcinit.="hc[\"$sk\"]=\"not yet connected...\";";
1613: }
1614: $grid.=" hitcount=".$hc;
1.127 matthew 1615: $grid.=" domain=".$Apache::lonnet::hostdom{$sk};
1616: $grid.=" IP=".$Apache::lonnet::hostip{$sk};
1.125 matthew 1617: # '+"'"+'">'+
1618: $grid.="'+\"'\"+')\">'+";
1619: $grid.="\n";
1.127 matthew 1620: $grid.="'<img border=\"0\" name=\"img_".$Apache::lonnet::hostdom{$sk}.
1621: '_'.$sk."\" src=\"/adm/lonIcons/srvnull.gif\" alt=\"".$sk.
1622: "\" /></a>'+\n";
1.125 matthew 1623: $grid.="'<br />'+\n" unless $sn%10;
1624: $sn++;
1625: }
1626: my $result.=<<ENDPOP;
1627: <script type="text/javascript">
1628: popwin=open('','popwin','scrollbars=1,width=400,height=220');
1629: popwin.focus();
1630: popwin.document.writeln('<'+'html>');
1631: popwin.document.writeln('<'+'head>');
1632: popwin.document.writeln('<'+'script>');
1633: popwin.document.writeln('hc=new Array();$hcinit');
1634: popwin.document.writeln('<'+'/script>');
1635: popwin.document.writeln('<'+'/head>'+
1636: '<'+'body bgcolor="#FFFFFF">'+
1637: '<'+'image name="whirly" align="right" src="/adm/lonIcons/'+
1638: 'lonanim.gif" '+
1639: 'alt="animated logo" />'+
1640: '<'+'h3>Search Results Progress<'+'/h3>'+
1641: '<'+'form name="popremain">'+
1642: '<'+'tt>'+
1643: '<'+'br clear="all"/><i>PLEASE BE PATIENT</i>'+
1644: '<'+'br />SCANNING $servernum SERVERS'+
1645: '<'+'br clear="all" />Number of record hits found '+
1646: '<'+'input type="text" size="10" name="numhits"'+
1647: ' value="0" />'+
1648: '<'+'br clear="all" />Time elapsed '+
1649: '<'+'input type="text" size="10" name="elapsetime"'+
1650: ' value="0" />'+
1651: '<'+'br />'+
1652: 'SERVER GRID (click on any cell for details)'+
1653: $grid
1654: '<'+'br />'+
1655: 'Server details '+
1656: '<'+'input type="text" size="35" name="sdetails"'+
1657: ' value="" />'+
1658: '<'+'br />'+
1659: ' <'+'input type="button" name="button"'+
1660: ' value="close this window" '+
1661: ' onClick="javascript:opener.abortsearch()" />'+
1662: ' <'+'input type="button" name="button"'+
1663: ' value="help" onClick="javascript:opener.openhelp()" />'+
1664: '<'+'/tt>'+
1665: '<'+'/form>'+
1666: '<'+'/body><'+'/html>');
1667: popwin.document.close();
1668: </script>
1669: ENDPOP
1670: return $result;
1671: }
1672:
1673: ######################################################################
1674: ######################################################################
1675:
1.122 matthew 1676: =pod
1677:
1678: =item Metadata Viewing Functions
1679:
1680: Output is a HTML-ified string.
1681: Input arguments are title, author, subject, url, keywords, version,
1682: notes, short abstract, mime, language, creation date,
1.126 matthew 1683: last revision date, owner, copyright, hostname, and
1.122 matthew 1684: extra custom metadata to show.
1685:
1686: =over 4
1687:
1688: =item &detailed_citation_view()
1689:
1690: =cut
1691:
1692: ######################################################################
1693: ######################################################################
1.50 harris41 1694: sub detailed_citation_view {
1.126 matthew 1695: my %values = @_;
1.50 harris41 1696: my $result=<<END;
1.126 matthew 1697: <h3><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
1698: target='search_preview'>$values{'title'}</a></h3>
1.56 harris41 1699: <p>
1.130 matthew 1700: <b>$values{'author'}</b>, <i>$values{'owner'}</i><br />
1701:
1702: <b>Subject: </b> $values{'subject'}<br />
1703: <b>Keyword(s): </b> $values{'keywords'}<br />
1704: <b>Notes: </b> $values{'notes'}<br />
1705: <b>MIME Type: </b> $values{'mimetag'}<br />
1706: <b>Language: </b> $values{'language'}<br />
1707: <b>Copyright/Distribution:</b> $values{'cprtag'}<br />
1.78 harris41 1708: </p>
1.126 matthew 1709: $values{'extrashow'}
1.78 harris41 1710: <p>
1.126 matthew 1711: $values{'shortabstract'}
1.50 harris41 1712: </p>
1713: END
1714: return $result;
1715: }
1716:
1.122 matthew 1717: ######################################################################
1718: ######################################################################
1719:
1720: =pod
1721:
1722: =item &summary_view()
1723:
1724: =cut
1725:
1726: ######################################################################
1727: ######################################################################
1.50 harris41 1728: sub summary_view {
1.126 matthew 1729: my %values = @_;
1.50 harris41 1730: my $result=<<END;
1.126 matthew 1731: <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
1732: target='search_preview'>$values{'author'}</a><br />
1733: $values{'title'}<br />
1734: $values{'owner'} -- $values{'lastrevisiondate'}<br />
1735: $values{'copyrighttag'}<br />
1736: $values{'extrashow'}
1.50 harris41 1737: </p>
1738: END
1739: return $result;
1740: }
1741:
1.122 matthew 1742: ######################################################################
1743: ######################################################################
1744:
1745: =pod
1746:
1747: =item &fielded_format_view()
1748:
1749: =cut
1750:
1751: ######################################################################
1752: ######################################################################
1.50 harris41 1753: sub fielded_format_view {
1.126 matthew 1754: my %values = @_;
1.50 harris41 1755: my $result=<<END;
1.126 matthew 1756: <b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
1757: target='search_preview'>$values{'url'}</a>
1.56 harris41 1758: <br />
1.126 matthew 1759: <b>Title:</b> $values{'title'}<br />
1760: <b>Author(s):</b> $values{'author'}<br />
1761: <b>Subject:</b> $values{'subject'}<br />
1762: <b>Keyword(s):</b> $values{'keywords'}<br />
1763: <b>Notes:</b> $values{'notes'}<br />
1764: <b>MIME Type:</b> $values{'mimetag'}<br />
1765: <b>Language:</b> $values{'language'}<br />
1766: <b>Creation Date:</b> $values{'creationdate'}<br />
1767: <b>Last Revision Date:</b> $values{'lastrevisiondate'}<br />
1768: <b>Publisher/Owner:</b> $values{'owner'}<br />
1769: <b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
1770: <b>Repository Location:</b> $values{'hostname'}<br />
1771: <b>Abstract:</b> $values{'shortabstract'}<br />
1772: $values{'extrashow'}
1.50 harris41 1773: </p>
1774: END
1775: return $result;
1776: }
1777:
1.122 matthew 1778: ######################################################################
1779: ######################################################################
1780:
1781: =pod
1782:
1783: =item &xml_sgml_view()
1784:
1785: =back
1786:
1787: =cut
1788:
1789: ######################################################################
1790: ######################################################################
1.50 harris41 1791: sub xml_sgml_view {
1.126 matthew 1792: my %values = @_;
1.50 harris41 1793: my $result=<<END;
1.56 harris41 1794: <pre>
1795: <LonCapaResource>
1.126 matthew 1796: <url>$values{'url'}</url>
1797: <title>$values{'title'}</title>
1798: <author>$values{'author'}</author>
1799: <subject>$values{'subject'}</subject>
1800: <keywords>$values{'keywords'}</keywords>
1801: <notes>$values{'notes'}</notes>
1.56 harris41 1802: <mimeInfo>
1.126 matthew 1803: <mime>$values{'mime'}</mime>
1804: <mimetag>$values{'mimetag'}</mimetag>
1.56 harris41 1805: </mimeInfo>
1806: <languageInfo>
1.126 matthew 1807: <language>$values{'lang'}</language>
1808: <languagetag>$values{'language'}</languagetag>
1.56 harris41 1809: </languageInfo>
1.126 matthew 1810: <creationdate>$values{'creationdate'}</creationdate>
1811: <lastrevisiondate>$values{'lastrevisiondate'}</lastrevisiondate>
1812: <owner>$values{'owner'}</owner>
1.56 harris41 1813: <copyrightInfo>
1.126 matthew 1814: <copyright>$values{'copyright'}</copyright>
1815: <copyrighttag>$values{'copyrighttag'}</copyrighttag>
1.56 harris41 1816: </copyrightInfo>
1.126 matthew 1817: <repositoryLocation>$values{'hostname'}</repositoryLocation>
1818: <shortabstract>$values{'shortabstract'}</shortabstract>
1.57 harris41 1819: </LonCapaResource>
1.56 harris41 1820: </pre>
1.126 matthew 1821: $values{'extrashow'}
1.50 harris41 1822: END
1823: return $result;
1.60 harris41 1824: }
1825:
1.122 matthew 1826: ######################################################################
1827: ######################################################################
1828:
1829: =pod
1830:
1831: =item &filled() see if field is filled.
1832:
1833: =cut
1834:
1835: ######################################################################
1836: ######################################################################
1.98 harris41 1837: sub filled {
1838: my ($field)=@_;
1839: if ($field=~/\S/ && $field ne 'any') {
1840: return 1;
1.61 harris41 1841: }
1.98 harris41 1842: else {
1843: return 0;
1.61 harris41 1844: }
1.60 harris41 1845: }
1846:
1.122 matthew 1847: ######################################################################
1848: ######################################################################
1849:
1850: =pod
1851:
1852: =item &output_blank_field_error()
1853:
1854: =cut
1855:
1856: ######################################################################
1857: ######################################################################
1.98 harris41 1858: sub output_blank_field_error {
1859: my ($r)=@_;
1860: # make query information persistent to allow for subsequent revision
1861: my $persistent=&make_persistent();
1862:
1863: $r->print(<<BEGINNING);
1864: <html>
1865: <head>
1866: <title>The LearningOnline Network with CAPA</title>
1867: BEGINNING
1868: $r->print(<<RESULTS);
1869: </head>
1870: <body bgcolor="#ffffff">
1871: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1872: <h1>Search Catalog</h1>
1873: <form method="post" action="/adm/searchcat">
1874: $persistent
1875: <input type='button' value='Revise search request'
1876: onClick='this.form.submit();' />
1877: $closebutton
1878: <hr />
1879: <h3>Helpful Message</h3>
1880: <p>
1881: Incorrect search query due to blank entry fields.
1882: You need to fill in the relevant
1883: fields on the search page in order for a query to be
1884: processed.
1885: </p>
1886: </body>
1887: </html>
1888: RESULTS
1889: }
1890:
1.122 matthew 1891: ######################################################################
1892: ######################################################################
1893:
1894: =pod
1895:
1896: =item &output_date_error()
1897:
1898: Output a full html page with an error message.
1899:
1900: =cut
1901:
1902: ######################################################################
1903: ######################################################################
1.60 harris41 1904: sub output_date_error {
1905: my ($r,$message)=@_;
1906: # make query information persistent to allow for subsequent revision
1.65 harris41 1907: my $persistent=&make_persistent();
1.60 harris41 1908:
1.122 matthew 1909: $r->print(<<RESULTS);
1.60 harris41 1910: <html>
1911: <head>
1912: <title>The LearningOnline Network with CAPA</title>
1913: </head>
1914: <body bgcolor="#ffffff">
1.98 harris41 1915: <img align='right' src='/adm/lonIcons/lonlogos.gif' />
1.60 harris41 1916: <h1>Search Catalog</h1>
1917: <form method="post" action="/adm/searchcat">
1918: $persistent
1919: <input type='button' value='Revise search request'
1.98 harris41 1920: onClick='this.form.submit();' />
1.60 harris41 1921: $closebutton
1.98 harris41 1922: <hr />
1.60 harris41 1923: <h3>Helpful Message</h3>
1924: <p>
1925: $message
1926: </p>
1927: </body>
1928: </html>
1929: RESULTS
1.101 harris41 1930: }
1931:
1.122 matthew 1932: ######################################################################
1933: ######################################################################
1934:
1935: =pod
1936:
1937: =item &start_fresh_session()
1938:
1939: Cleans the global %hash by removing all fields which begin with
1940: 'pre_' or 'store'.
1941:
1942: =cut
1943:
1944: ######################################################################
1945: ######################################################################
1.101 harris41 1946: sub start_fresh_session {
1947: delete $hash{'mode_catalog'};
1.109 harris41 1948: foreach (keys %hash) {
1.101 harris41 1949: if ($_ =~ /^pre_/) {
1950: delete $hash{$_};
1951: }
1952: if ($_ =~ /^store/) {
1953: delete $hash{$_};
1954: }
1.109 harris41 1955: }
1.3 harris41 1956: }
1.117 matthew 1957:
1.122 matthew 1958: ######################################################################
1959: ######################################################################
1960:
1961: =pod
1962:
1963: =item &popwin_js() send javascript to popwin
1964:
1965: =cut
1966:
1967: ######################################################################
1968: ######################################################################
1.117 matthew 1969: sub popwin_js {
1970: # Print javascript out to popwin, but make sure we dont generate
1971: # any javascript errors in doing so.
1972: my ($r,$text) = @_;
1973: $r->print(<<"END");
1974: <script type="text/javascript">
1975: if (! popwin.closed) {
1976: $text
1977: }
1978: </script>
1979: END
1980: $r->rflush();
1981: }
1982:
1.122 matthew 1983: ######################################################################
1984: ######################################################################
1985:
1986: =pod
1987:
1988: =item &popwin_imgupdate()
1989:
1.125 matthew 1990: Send a given image (and its location) out to the browser. Takes as
1991: input $r, loncapa server id, and an icon URL.
1992:
1.122 matthew 1993: =cut
1994:
1995: ######################################################################
1996: ######################################################################
1.117 matthew 1997: sub popwin_imgupdate {
1.125 matthew 1998: my ($r,$server,$icon) = @_;
1.127 matthew 1999: &popwin_js($r,'popwin.document.img_'.$Apache::lonnet::hostdom{$server}.
2000: '_'.$server.'.'.'src="/adm/lonIcons/'.$icon.'";');
1.117 matthew 2001: }
1.1 www 2002:
2003: 1;
1.98 harris41 2004:
1.1 www 2005: __END__
1.105 harris41 2006:
1.121 matthew 2007: =pod
1.105 harris41 2008:
1.121 matthew 2009: =back
1.105 harris41 2010:
2011: =cut
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