1: # The LearningOnline Network
2: # Search Catalog
3: #
4: # 03/08/2001 Scott Harrison
5: #
6: package Apache::lonsearchcat;
7:
8: use strict;
9: use Apache::Constants qw(:common);
10: use Apache::lonnet();
11: use Apache::File();
12: use CGI qw(:standard);
13:
14: my %language;
15: my $scrout;
16: my %metadatafields;
17: my %cprtag;
18: my %mimetag;
19:
20: sub handler {
21: my $r = shift;
22:
23: # -------------------------------------- see if called from an interactive mode
24: map {
25: my ($name, $value) = split(/=/,$_);
26: $value =~ tr/+/ /;
27: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
28: if ($name eq 'catalogmode') {
29: $ENV{'form.'.$name}=$value;
30: }
31: } (split(/&/,$ENV{'QUERY_STRING'}));
32:
33: $r->content_type('text/html');
34: $r->send_http_header;
35: return OK if $r->header_only;
36:
37: %metadatafields=();
38:
39: my $hidden='';
40: $hidden=<<END if $ENV{'form.catalogmode'} eq 'interactive';
41: <input type='hidden' name='catalogmode' value='interactive'>
42: END
43:
44: # ------------------------------------------------ First, check out environment
45: $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
46:
47: # --------------------------------- Compute various listings of metadata values
48:
49: %language=();
50: $language{'any'}='Any language';
51: {
52: my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab');
53: map {
54: $_=~/(\w+)\s+([\w\s\-]+)/;
55: $language{$1}=$2;
56: } <$fh>;
57: }
58:
59: %cprtag=();
60: $cprtag{'any'}='Any copyright/distribution';
61: {
62: my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab');
63: map {
64: $_=~/(\w+)\s+([\w\s\-]+)/;
65: $cprtag{$1}=$2;
66: } <$fh>;
67: }
68:
69: %mimetag=();
70: $mimetag{'any'}='Any type';
71: {
72: my $fh=Apache::File->new($r->dir_config('lonTabDir').'/filetypes.tab');
73: map {
74: $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/;
75: $mimetag{$1}=".$1 $3";
76: } <$fh>;
77: }
78:
79: if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
80: return &basicsearch($r,\%ENV);
81: }
82: elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
83: return &advancedsearch($r,\%ENV);
84: }
85:
86: $scrout=''; # building a part of screen output
87: $scrout.=&searchphrasefield('Limit by title','title',
88: $ENV{'form.title'});
89:
90: $scrout.=&searchphrasefield('Limit by author','author',
91: $ENV{'form.author'});
92:
93: $scrout.=&searchphrasefield('Limit by subject','subject',
94: $ENV{'form.subject'});
95:
96: $scrout.=&searchphrasefield('Limit by keywords','keywords',
97: $ENV{'form.keywords'});
98:
99: $scrout.=&searchphrasefield('Limit by URL','url',
100: $ENV{'form.url'});
101:
102: $scrout.=&searchphrasefield('Limit by version','version',
103: $ENV{'form.version'});
104:
105: $scrout.=&searchphrasefield('Limit by notes','notes',
106: $ENV{'form.notes'});
107:
108: $scrout.=&searchphrasefield('Limit by abstract','abstract',
109: $ENV{'form.abstract'});
110:
111: $ENV{'form.mime'}='notxxx' unless length($ENV{'form.mime'});
112: $scrout.=&selectbox('Limit by MIME type','mime',
113: $ENV{'form.mime'},%mimetag);
114:
115: $ENV{'form.language'}='any' unless length($ENV{'form.language'});
116:
117: $scrout.=&selectbox('Limit by language','language',
118: $ENV{'form.language'},%language);
119:
120:
121: # ------------------------------------------------ Compute date selection boxes
122: $scrout.=<<CREATIONDATESTART;
123: <p>
124: <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
125: </font>
126: <br>
127: between:
128: CREATIONDATESTART
129: $scrout.=&dateboxes('creationdatestart',1,1,1976,
130: $ENV{'form.creationdatestart_month'},
131: $ENV{'form.creationdatestart_day'},
132: $ENV{'form.creationdatestart_year'},
133: );
134: $scrout.=<<CREATIONDATEEND;
135: and:
136: CREATIONDATEEND
137: $scrout.=&dateboxes('creationdateend',12,31,2051,
138: $ENV{'form.creationdateend_month'},
139: $ENV{'form.creationdateend_day'},
140: $ENV{'form.creationdateend_year'},
141: );
142: $scrout.="</p>";
143:
144: $scrout.=<<LASTREVISIONDATESTART;
145: <p>
146: <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
147: </b></font>
148: <br>between:
149: LASTREVISIONDATESTART
150: $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
151: $ENV{'form.lastrevisiondatestart_month'},
152: $ENV{'form.lastrevisiondatestart_day'},
153: $ENV{'form.lastrevisiondatestart_year'},
154: );
155: $scrout.=<<LASTREVISIONDATEEND;
156: and:
157: LASTREVISIONDATEEND
158: $scrout.=&dateboxes('lastrevisiondateend',12,31,2051,
159: $ENV{'form.lastrevisiondateend_month'},
160: $ENV{'form.lastrevisiondateend_day'},
161: $ENV{'form.lastrevisiondateend_year'},
162: );
163: $scrout.='</p>';
164:
165: $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
166: $ENV{'form.owner'});
167: # $metadatafields{'owner'});
168:
169: $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
170: $scrout.=&selectbox('Limit by copyright/distribution','copyright',
171: $ENV{'form.copyright'},%cprtag);
172:
173: # ------------------------------------------- Compute customized metadata field
174: $scrout.=<<CUSTOMMETADATA;
175: <p>
176: <font color="#800000" face="helvetica"><b>LIMIT BY OTHER METADATA FIELDS:</b>
177: </font>
178: For author-specific metadata, enter in an expression in the form of
179: <i>key</i>=<i>value</i> separated by operators such as AND or OR.<br>
180: <b>Example:</b> grandmother=75 OR grandfather=85
181: <br>
182: CUSTOMMETADATA
183: $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
184: $scrout.=' <i>initial users of this system do not need to worry about this option</i>';
185:
186: # ---------------------------------------------------------------- Print screen
187: $r->print(<<ENDDOCUMENT);
188: <html>
189: <head>
190: <title>The LearningOnline Network with CAPA</title>
191: </head>
192: <body bgcolor="#FFFFFF">
193: <img align=right src=/adm/lonIcons/lonlogos.gif>
194: <h1>Search Catalog</h1>
195: <form method="post" action="/adm/searchcat">
196: $hidden
197: <hr>
198: <h3>Basic Search</h3>
199: <p>
200: Enter terms or phrases separated by search operators
201: such as AND or OR then press SEARCH below. Terms should be specific
202: to the title, author, subject, notes, or abstract information associated
203: with a resource.
204: <br>
205: ENDDOCUMENT
206: $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));
207: $r->print(' ');
208: $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));
209: $r->print('<font color="#800000">Title only</font> ');
210: $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));
211: $r->print(<<ENDDOCUMENT);
212: <font color="#800000">Search historic archives</font>
213: <br>
214: <input type="submit" name="basicsubmit" value="SEARCH">
215: <input type="reset" name="reset" value="RESET">
216: <input type="button" name="close" value="CLOSE" onClick="self.close()">
217: </p>
218: <hr>
219: <h3>Advanced Search</h3>
220: $scrout
221: <p>
222: <input type="submit" name="advancedsubmit" value="SEARCH">
223: <input type="reset" name="reset" value="RESET">
224: <input type="button" name="close" value="CLOSE" onClick="self.close()">
225: </p>
226: </form>
227: </body>
228: </html>
229: ENDDOCUMENT
230: return OK;
231: }
232:
233: # --------------------------------------------------------- Various form fields
234:
235: sub textfield {
236: my ($title,$name,$value)=@_;
237: return "\n<p><b>$title:</b><br>".
238: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
239: }
240:
241: sub simpletextfield {
242: my ($name,$value)=@_;
243: return '<input type=text name="'.$name.'" size=20 value="'.$value.'">';
244: }
245:
246: sub simplecheckbox {
247: my ($name,$value)=@_;
248: my $checked='';
249: $checked="CHECKED" if $value eq 'on';
250: return '<input type=checkbox name="'.$name.'" '. $checked . '>';
251: }
252:
253: sub searchphrasefield {
254: my ($title,$name,$value)=@_;
255: my $instruction=<<END;
256: Enter terms or phrases separated by search operators such
257: as AND or OR.
258: END
259: my $uctitle=uc($title);
260: return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
261: "</FONT> $instruction<br>".
262: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
263: }
264:
265: sub dateboxes {
266: my ($name,$defaultmonth,$defaultday,$defaultyear,
267: $currentmonth,$currentday,$currentyear)=@_;
268: ($defaultmonth,$defaultday,$defaultyear)=('','','');
269: my $month=<<END;
270: <select name="${name}_month">
271: <option value='$defaultmonth'> </option>
272: <option value="1">January</option>
273: <option value="2">February</option>
274: <option value="3">March</option>
275: <option value="4">April</option>
276: <option value="5">May</option>
277: <option value="6">June</option>
278: <option value="7">July</option>
279: <option value="8">August</option>
280: <option value="9">September</option>
281: <option value="10">October</option>
282: <option value="11">November</option>
283: <option value="12">December</option>
284: </select>
285: END
286: $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
287: my $day=<<END;
288: <select name="${name}_day">
289: <option value='$defaultday'> </option>
290: <option value="1">1</option>
291: <option value="2">2</option>
292: <option value="3">3</option>
293: <option value="4">4</option>
294: <option value="5">5</option>
295: <option value="6">6</option>
296: <option value="7">7</option>
297: <option value="8">8</option>
298: <option value="9">9</option>
299: <option value="10">10</option>
300: <option value="11">11</option>
301: <option value="12">12</option>
302: <option value="13">13</option>
303: <option value="14">14</option>
304: <option value="15">15</option>
305: <option value="16">16</option>
306: <option value="17">17</option>
307: <option value="18">18</option>
308: <option value="19">19</option>
309: <option value="20">20</option>
310: <option value="21">21</option>
311: <option value="22">22</option>
312: <option value="23">23</option>
313: <option value="24">24</option>
314: <option value="25">25</option>
315: <option value="26">26</option>
316: <option value="27">27</option>
317: <option value="28">28</option>
318: <option value="29">29</option>
319: <option value="30">30</option>
320: <option value="31">31</option>
321: </select>
322: END
323: $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
324: my $year=<<END;
325: <select name="${name}_year">
326: <option value='$defaultyear'> </option>
327: <option value="1976">1976</option>
328: <option value="1977">1977</option>
329: <option value="1978">1978</option>
330: <option value="1979">1979</option>
331: <option value="1980">1980</option>
332: <option value="1981">1981</option>
333: <option value="1982">1982</option>
334: <option value="1983">1983</option>
335: <option value="1984">1984</option>
336: <option value="1985">1985</option>
337: <option value="1986">1986</option>
338: <option value="1987">1987</option>
339: <option value="1988">1988</option>
340: <option value="1989">1989</option>
341: <option value="1990">1990</option>
342: <option value="1991">1991</option>
343: <option value="1992">1992</option>
344: <option value="1993">1993</option>
345: <option value="1994">1994</option>
346: <option value="1995">1995</option>
347: <option value="1996">1996</option>
348: <option value="1997">1997</option>
349: <option value="1998">1998</option>
350: <option value="1999">1999</option>
351: <option value="2000">2000</option>
352: <option value="2001">2001</option>
353: <option value="2002">2002</option>
354: <option value="2003">2003</option>
355: <option value="2004">2004</option>
356: <option value="2005">2005</option>
357: <option value="2006">2006</option>
358: <option value="2007">2007</option>
359: <option value="2008">2008</option>
360: <option value="2009">2009</option>
361: <option value="2010">2010</option>
362: <option value="2011">2011</option>
363: <option value="2012">2012</option>
364: <option value="2013">2013</option>
365: <option value="2014">2014</option>
366: <option value="2015">2015</option>
367: <option value="2016">2016</option>
368: <option value="2017">2017</option>
369: <option value="2018">2018</option>
370: <option value="2019">2019</option>
371: <option value="2020">2020</option>
372: <option value="2021">2021</option>
373: <option value="2022">2022</option>
374: <option value="2023">2023</option>
375: <option value="2024">2024</option>
376: <option value="2025">2025</option>
377: <option value="2026">2026</option>
378: <option value="2027">2027</option>
379: <option value="2028">2028</option>
380: <option value="2029">2029</option>
381: <option value="2030">2030</option>
382: <option value="2031">2031</option>
383: <option value="2032">2032</option>
384: <option value="2033">2033</option>
385: <option value="2034">2034</option>
386: <option value="2035">2035</option>
387: <option value="2036">2036</option>
388: <option value="2037">2037</option>
389: <option value="2038">2038</option>
390: <option value="2039">2039</option>
391: <option value="2040">2040</option>
392: <option value="2041">2041</option>
393: <option value="2042">2042</option>
394: <option value="2043">2043</option>
395: <option value="2044">2044</option>
396: <option value="2045">2045</option>
397: <option value="2046">2046</option>
398: <option value="2047">2047</option>
399: <option value="2048">2048</option>
400: <option value="2049">2049</option>
401: <option value="2050">2050</option>
402: <option value="2051">2051</option>
403: </select>
404: END
405: $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
406: return "$month$day$year";
407: }
408:
409: sub selectbox {
410: my ($title,$name,$value,%options)=@_;
411: my $uctitle=uc($title);
412: my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
413: "</b></font><br>".'<select name="'.$name.'">';
414: map {
415: $selout.='<option value="'.$_.'"';
416: if ($_ eq $value) { $selout.=' selected'; }
417: $selout.='>'.$options{$_}.'</option>';
418: } sort keys %options;
419: return $selout.'</select>';
420: }
421:
422: # ------------------------------------------------ Performing a advanced search
423: sub advancedsearch {
424: my ($r,$envhash)=@_;
425: my %ENV=%{$envhash};
426:
427: my $fillflag=0;
428: for my $field ('title','author','subject','keywords','url','version',
429: 'notes','abstract','mime','language','owner',
430: 'custommetadata') {
431: if (&filled($ENV{'form.basicexp'})) {
432: $fillflag++;
433: }
434: }
435:
436: unless ($fillflag) {
437: &output_blank_field_error($r);
438: return OK;
439: }
440:
441: $r->print(<<END);
442: Advanced searching is not yet implemented.
443: END
444: return OK;
445: }
446:
447: # ---------------------------------------------------- see if a field is filled
448: sub filled {
449: my ($field)=@_;
450: if ($field=~/\S/) {
451: return 1;
452: }
453: else {
454: return 0;
455: }
456: }
457:
458: # --------------------------------------------------- Performing a basic search
459: sub basicsearch {
460: my ($r,$envhash)=@_;
461: my %ENV=%{$envhash};
462:
463: unless (&filled($ENV{'form.basicexp'})) {
464: &output_blank_field_error($r);
465: return OK;
466: }
467:
468: my $query=$ENV{'form.basicexp'};
469: my $concatarg=join('," ",',
470: ('title', 'author', 'subject', 'notes', 'abstract'));
471:
472: $query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'";
473: my $reply=&Apache::lonnet::metadata_query($query);
474: &output_results($r,$envhash,$concatarg,$reply);
475: return OK;
476: }
477:
478: sub output_blank_field_error {
479: my ($r)=@_;
480: # make query information persistent to allow for subsequent revision
481: my $persistent='';
482: map {
483: if (/^form\./ && !/submit/) {
484: my $name=$_;
485: my $key=$name;
486: $name=~s/^form\.//;
487: $persistent.=<<END;
488: <INPUT TYPE='hidden' NAME='$name' VALUE='$ENV{$key}'>
489: END
490: }
491: } (keys %ENV);
492:
493: $r->print(<<BEGINNING);
494: <html>
495: <head>
496: <title>The LearningOnline Network with CAPA</title>
497: BEGINNING
498: $r->print(<<RESULTS);
499: </head>
500: <body bgcolor="#ffffff">
501: <img align=right src=/adm/lonIcons/lonlogos.gif>
502: <h1>Search Catalog</h1>
503: <form method="post" action="/adm/searchcat">
504: $persistent
505: <input type='button' value='Revise search request'
506: onClick='this.form.submit();'>
507: <input type='button' value='CLOSE'
508: onClick='self.close();'>
509: <hr>
510: <h3>Helpful Message</h3>
511: <p>
512: Incorrect search query due to blank entry fields.
513: You need to fill in the relevant
514: fields on the search page in order for a query to be
515: processed.
516: </p>
517: </body>
518: </html>
519: RESULTS
520: }
521:
522: # ----------------------------- format and output results based on a reply list
523: sub output_results {
524: my ($r,$envhash,$testval,@replylist)=@_;
525: my %ENV=%{$envhash};
526: foreach my $reply (@replylist) {
527:
528: my @results;
529:
530: my $replyfile='';
531: $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting
532: $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
533: $reply=~/(.*?)\_/;
534: my $hostname=$1;
535:
536: {
537: while (1) {
538: last if -e $replyfile;
539: sleep 1;
540: }
541: # QUESTION: how should I handle this error condition..
542: # I'm sure there is syntax elsewhere I can use..
543: my $fh=Apache::File->new($replyfile) or
544: ($r->print('file cannot be opened') and return OK);
545: @results=<$fh>;
546: }
547:
548: my $compiledresult='';
549:
550: foreach my $result (@results) {
551: my ($title,$author,$subject,$url,$keywords,$version,
552: $notes,$abstract,$mime,$lang,
553: $creationdate,$lastrevisiondate,$owner,$copyright
554: )=map {&Apache::lonnet::unescape($_)} (split(/\,/,$result));
555: my $shortabstract=$abstract;
556: $shortabstract=substr($abstract,0,200) if length($abstract)>200;
557: $compiledresult.=<<END;
558: <p>
559: END
560: $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'interactive';
561: <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
562: onClick="javascript:select_data('$title','$url')">
563: </font>
564: <br>
565: END
566: $compiledresult.=<<END;
567: <b>URL: </b> <A HREF="http://$ENV{'HTTP_HOST'}$url" TARGET='search_preview'>$url</A>
568: <br>
569: <b>Title:</b> $title<br>
570: <b>Author(s):</b> $author<br>
571: <b>Subject:</b> $subject<br>
572: <b>Keyword(s):</b> $keywords<br>
573: <b>Notes:</b> $notes<br>
574: <b>Abstract:</b> $shortabstract<br>
575: <b>MIME Type:</b> $mimetag{$mime}<br>
576: <b>Language:</b> $language{$lang}<br>
577: <b>Creation Date:</b> $creationdate<br>
578: <b>Last Revision Date:</b> $lastrevisiondate<br>
579: <b>Publisher/Owner:</b> $owner<br>
580: <b>Copyright/Distribution:</b> $copyright<br>
581: <b>Repository Location:</b> $hostname
582: </p>
583: END
584: }
585:
586: unless ($compiledresult) {
587: $compiledresult="There were no results that matched your query";
588: }
589:
590: # make query information persistent to allow for subsequent revision
591: my $persistent='';
592: map {
593: if (/^form\./ && !/submit/) {
594: my $name=$_;
595: my $key=$name;
596: $name=~s/^form\.//;
597: $persistent.=<<END;
598: <INPUT TYPE='hidden' NAME='$name' VALUE='$ENV{$key}'>
599: END
600: }
601: } (keys %ENV);
602:
603: $r->print(<<BEGINNING);
604: <html>
605: <head>
606: <title>The LearningOnline Network with CAPA</title>
607: BEGINNING
608: $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'interactive';
609: <script>
610: function select_data(title,url) {
611: changeTitle(title);
612: changeURL(url);
613: }
614: function changeTitle(val) {
615: if (opener.inf.document.forms.resinfo.elements.t) {
616: opener.inf.document.forms.resinfo.elements.t.value=val;
617: }
618: }
619: function changeURL(val) {
620: if (opener.inf.document.forms.resinfo.elements.u) {
621: opener.inf.document.forms.resinfo.elements.u.value=val;
622: }
623: }
624: </script>
625: SCRIPT
626: $r->print(<<RESULTS);
627: </head>
628: <body bgcolor="#ffffff">
629: <img align=right src=/adm/lonIcons/lonlogos.gif>
630: <h1>Search Catalog</h1>
631: $testval
632: <form method="post" action="/adm/searchcat">
633: <input type='button' value='Revise search request'
634: onClick='this.form.submit();'>
635: <input type='button' value='CLOSE'
636: onClick='self.close();'>
637: $persistent
638: <hr>
639: <h3>Search Query</h3>
640: <p>
641: <b>Basic search:</b> $ENV{'form.basicexp'}
642: </p>
643: <h3>Search Results</h3>
644: $compiledresult
645: </body>
646: </html>
647: RESULTS
648: }
649: }
650:
651: 1;
652: __END__
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