Annotation of loncom/homework/imageresponse.pm, revision 1.36
1.12 albertel 1: # The LearningOnline Network with CAPA
1.14 albertel 2: # image click response style
3: #
1.36 ! albertel 4: # $Id: imageresponse.pm,v 1.35 2003/09/22 20:49:01 albertel Exp $
1.14 albertel 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.
14: #
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/
27: #
1.33 ng 28: # July,August 2003 H. K. Ng
29: #
1.25 www 30: #FIXME LATER assumes multiple possible submissions but only one is possible
31: #currently
1.3 albertel 32:
1.1 albertel 33: package Apache::imageresponse;
1.34 albertel 34: use Apache::randomlylabel;
1.1 albertel 35: use strict;
1.21 harris41 36: use Image::Magick;
1.33 ng 37: use GD;
1.1 albertel 38:
1.16 harris41 39: BEGIN {
1.36 ! albertel 40: &Apache::lonxml::register('Apache::imageresponse',('imageresponse'));
1.1 albertel 41: }
42:
43: sub start_imageresponse {
1.36 ! albertel 44: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 45: my $result;
! 46: #when in a radiobutton response use these
! 47: &Apache::lonxml::register('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
! 48: push (@Apache::lonxml::namespace,'imageresponse');
! 49: my $id = &Apache::response::start_response($parstack,$safeeval);
! 50: if ($target eq 'meta') {
! 51: $result=&Apache::response::meta_package_write('imageresponse');
! 52: }
! 53: return $result;
1.1 albertel 54: }
55:
56: sub end_imageresponse {
1.30 albertel 57: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
58: &Apache::response::end_response;
59: pop @Apache::lonxml::namespace;
60: &Apache::lonxml::deregister('Apache::imageresponse',('foilgroup','foil','text','image','rectangle','conceptgroup'));
61: my $result;
62: if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
63: return $result;
1.1 albertel 64: }
65:
1.20 albertel 66: %Apache::response::foilgroup=();
1.1 albertel 67: sub start_foilgroup {
1.36 ! albertel 68: %Apache::response::foilgroup=();
! 69: $Apache::imageresponse::conceptgroup=0;
! 70: &Apache::response::setrandomnumber();
! 71: return '';
1.1 albertel 72: }
73:
1.2 albertel 74: sub getfoilcounts {
1.36 ! albertel 75: my ($parstack,$safeeval)=@_;
1.12 albertel 76:
1.36 ! albertel 77: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
! 78: # +1 since instructors will count from 1
! 79: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
! 80: if (&Apache::response::showallfoils()) { $max=$count; }
! 81: return ($count,$max);
1.2 albertel 82: }
83:
84: sub whichfoils {
1.36 ! albertel 85: my ($max)=@_;
! 86: if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
! 87: my @names = @{ $Apache::response::foilgroup{'names'} };
! 88: my @whichopt =();
! 89: while ((($#whichopt+1) < $max) && ($#names > -1)) {
! 90: &Apache::lonxml::debug("Have $#whichopt max is $max");
! 91: my $aopt;
! 92: if (&Apache::response::showallfoils()) {
! 93: $aopt=0;
! 94: } else {
! 95: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
! 96: }
! 97: &Apache::lonxml::debug("From $#names elms, picking $aopt");
! 98: $aopt=splice(@names,$aopt,1);
! 99: &Apache::lonxml::debug("Picked $aopt");
! 100: push (@whichopt,$aopt);
! 101: }
! 102: return @whichopt;
1.2 albertel 103: }
104:
105: sub displayfoils {
1.36 ! albertel 106: my ($target,@whichopt) = @_;
! 107: my $result ='';
! 108: my $name;
! 109: my $temp=1;
! 110: foreach $name (@whichopt) {
! 111: $result.=$Apache::response::foilgroup{"$name.text"};
! 112: &Apache::lonxml::debug("Text is $result");
! 113: if ($target eq 'tex') {$result.="\\vskip 0 mm \n";} else {$result.="<br />\n";}
! 114: my $image=$Apache::response::foilgroup{"$name.image"};
! 115: &Apache::lonxml::debug("image is $image");
! 116: if ( &Apache::response::show_answer() ) {
! 117: if ($target eq 'tex') {
! 118: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
! 119: } else {
! 120: $result.="<img src=\"$image\"/> <br />\n";
! 121: }
! 122: } else {
! 123: if ($target eq 'tex') {
! 124: $result.=$Apache::response::foilgroup{"$name.image"}."\\vskip 0 mm \n";
! 125: } else {
! 126: $result.="<input type=\"image\" name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\" src=\"$image\"/> <br />\n";
! 127: }
! 128: }
! 129: $temp++;
! 130: }
! 131: return $result;
1.2 albertel 132: }
133:
1.3 albertel 134: sub gradefoils {
1.36 ! albertel 135: my (@whichopt) = @_;
! 136: my $x;
! 137: my $y;
! 138: my $result;
! 139: my $id=$Apache::inputtags::response['-1'];
! 140: my $temp=1;
! 141: foreach my $name (@whichopt) {
! 142: $x=$ENV{"form.HWVAL_$id:$temp.x"};
! 143: $y=$ENV{"form.HWVAL_$id:$temp.y"};
! 144: &Apache::lonxml::debug("Got a x of $x and a y of $y for $name");
! 145: if (defined($x) && defined($y) &&
! 146: defined(@{ $Apache::response::foilgroup{"$name.area"} })) {
! 147: my @areas = @{ $Apache::response::foilgroup{"$name.area"} };
! 148: my $grade="INCORRECT";
! 149: foreach my $area (@areas) {
! 150: &Apache::lonxml::debug("Area is $area for $name");
! 151: $area =~ m/([a-z]*):/;
! 152: &Apache::lonxml::debug("Area of type $1");
! 153: if ($1 eq 'rectangle') {
! 154: $grade=&grade_rectangle($area,$x,$y);
! 155: } else {
! 156: &Apache::lonxml::error("Unknown area style $area");
! 157: }
! 158: &Apache::lonxml::debug("Area said $grade");
! 159: if ($grade eq 'APPROX_ANS') { last; }
! 160: }
! 161: &Apache::lonxml::debug("Foil was $grade");
! 162: if ($grade eq 'INCORRECT') { $result= 'INCORRECT'; }
! 163: if (($grade eq 'APPROX_ANS') && ($result ne 'APPROX_ANS')) { $result=$grade; }
! 164: &Apache::lonxml::debug("Question is $result");
! 165: $temp++;
1.9 albertel 166: }
1.36 ! albertel 167: }
! 168: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}="$x:$y";
! 169: $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$result;
! 170: return '';
1.3 albertel 171: }
172:
1.1 albertel 173: sub end_foilgroup {
1.36 ! albertel 174: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 175: my $result='';
! 176: my @whichopt;
! 177: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
! 178: my ($count,$max) = &getfoilcounts($parstack,$safeeval);
! 179: if ($count>$max) { $count=$max }
! 180: &Apache::lonxml::debug("Count is $count from $max");
! 181: @whichopt = &whichfoils($max);
! 182: if ($target eq 'web' || $target eq 'tex') {
! 183: $result=&displayfoils($target,@whichopt);
! 184: } elsif ($target eq 'grade') {
! 185: if ( defined $ENV{'form.submitted'}) { &gradefoils(@whichopt); }
! 186: }
! 187: } elsif ($target eq 'edit') {
! 188: $result=&Apache::edit::end_table();
! 189: }
! 190: return $result;
1.1 albertel 191: }
192:
193: sub start_conceptgroup {
1.36 ! albertel 194: $Apache::imageresponse::conceptgroup=1;
! 195: %Apache::response::conceptgroup=();
! 196: return '';
1.1 albertel 197: }
198:
199: sub end_conceptgroup {
1.36 ! albertel 200: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 201: $Apache::imageresponse::conceptgroup=0;
! 202: my $result;
! 203: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
! 204: if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
! 205: my @names = @{ $Apache::response::conceptgroup{'names'} };
! 206: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
! 207: my $name=$names[$pick];
! 208: if (defined(@{ $Apache::response::conceptgroup{"$name.area"} })) {
! 209: push @{ $Apache::response::foilgroup{'names'} }, $name;
! 210: $Apache::response::foilgroup{"$name.text"} = $Apache::response::conceptgroup{"$name.text"};
! 211: $Apache::response::foilgroup{"$name.image"} = $Apache::response::conceptgroup{"$name.image"};
! 212: push(@{ $Apache::response::foilgroup{"$name.area"} }, @{ $Apache::response::conceptgroup{"$name.area"} });
! 213: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
! 214: $Apache::response::foilgroup{"$name.concept"} = $concept;
! 215: &Apache::lonxml::debug("Selecting $name in $concept");
! 216: }
! 217: }
! 218: } elsif ($target eq 'edit') {
! 219: $result=&Apache::edit::end_table();
! 220: }
! 221: return $result;
1.31 albertel 222: }
223:
224: sub insert_foil {
225: return '
226: <foil>
227: <image></image>
228: <text></text>
229: <rectangle></rectangle>
230: </foil>
231: ';
1.1 albertel 232: }
233:
1.12 albertel 234: $Apache::imageresponse::curname='';
1.1 albertel 235: sub start_foil {
1.36 ! albertel 236: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 237: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
! 238: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
! 239: if ($name eq '') { $name=$Apache::lonxml::curdepth; }
! 240: if ( $Apache::imageresponse::conceptgroup
! 241: && !&Apache::response::showallfoils()) {
! 242: push(@{ $Apache::response::conceptgroup{'names'} }, $name);
! 243: } else {
! 244: push(@{ $Apache::response::foilgroup{'names'} }, $name);
! 245: }
! 246: $Apache::imageresponse::curname=$name;
! 247: }
! 248: return '';
1.1 albertel 249: }
250:
251: sub end_foil {
1.26 albertel 252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
253: my $result;
254: if ($target eq 'edit') {
255: $result=&Apache::edit::end_table();
256: }
257: return $result;
1.1 albertel 258: }
259:
260: sub start_text {
1.36 ! albertel 261: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 262: my $result='';
! 263: if ($target eq 'web' || $target eq 'tex') {
! 264: &Apache::lonxml::startredirection;
! 265: } elsif ($target eq 'edit') {
! 266: my $descr=&Apache::lonxml::get_all_text('/text',$parser);
! 267: $result=&Apache::edit::tag_start($target,$token,'Task Description').
! 268: &Apache::edit::editfield($token->[1],$descr,'Text',60,2).
! 269: &Apache::edit::end_row();
! 270: } elsif ($target eq "modified") {
! 271: my $descr=&Apache::lonxml::get_all_text('/text',$parser);
! 272: $result=$token->[4].&Apache::edit::modifiedfield($token);
! 273: &Apache::lonxml::debug($result);
! 274: }
! 275: return $result;
1.1 albertel 276: }
277:
278: sub end_text {
1.36 ! albertel 279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 280: my $result;
! 281: if ($target eq 'web' || $target eq 'tex') {
! 282: my $name = $Apache::imageresponse::curname;
! 283: if ( $Apache::imageresponse::conceptgroup
! 284: && !&Apache::response::showallfoils() ) {
! 285: $Apache::response::conceptgroup{"$name.text"} = &Apache::lonxml::endredirection;
! 286: } else {
! 287: $Apache::response::foilgroup{"$name.text"} = &Apache::lonxml::endredirection;
! 288: }
! 289: } elsif ($target eq 'edit') {
! 290: $result=&Apache::edit::end_table();
! 291: }
! 292: return $result;
1.1 albertel 293: }
294:
295: sub start_image {
1.36 ! albertel 296: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 297: my $result='';
! 298: if ($target eq 'web' || $target eq 'tex') {
! 299: &Apache::lonxml::startredirection;
! 300: } elsif ($target eq 'edit') {
! 301: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser);
! 302: $Apache::edit::bgimgsrc=$bgimg;
! 303: $Apache::edit::bgimgsrcdepth=$Apache::lonxml::curdepth;
! 304:
! 305: $result=&Apache::edit::tag_start($target,$token,'Clickable Image').
! 306: &Apache::edit::editline($token->[1],$bgimg,'Image Source File',40);
! 307: $result.=&Apache::edit::browse(undef,'textnode').' ';
! 308: $result.=&Apache::edit::search(undef,'textnode').
! 309: &Apache::edit::end_row();
! 310: } elsif ($target eq "modified") {
! 311: my $bgimg=&Apache::lonxml::get_all_text('/image',$parser);
! 312: $result=$token->[4].&Apache::edit::modifiedfield($token);
! 313: &Apache::lonxml::debug($result);
! 314: }
! 315: return $result;
1.1 albertel 316: }
317:
318: sub end_image {
1.36 ! albertel 319: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 320: my $result;
! 321: my $name = $Apache::imageresponse::curname;
! 322: if ($target eq 'web') {
! 323: my $image = &Apache::lonxml::endredirection;
! 324: &Apache::lonxml::debug("original image is $image");
! 325: my $id=$Apache::inputtags::response['-1'];
! 326: my $temp=1;
! 327: my $x=$ENV{"form.HWVAL_$id:$temp.x"};
! 328: my $y=$ENV{"form.HWVAL_$id:$temp.y"};
! 329: if (defined ($x) && defined ($y)) {
! 330: &Apache::lonxml::debug("x and y defined as $x,$y");
! 331: my $currentImage = &Apache::randomlylabel::get_image('/home/httpd/html'.$image,1);
! 332: if (! defined($currentImage)) {
! 333: &Apache::lonnet::logthis('Unable to create image object for '.$image);
! 334: return '';
! 335: }
! 336: my $red;
! 337: if (!($red = $currentImage->colorResolve(255,0,0))) {
! 338: $red = $currentImage->colorClosestHWB(255,0,0);
! 339: }
! 340: my $length = 6;
! 341: $currentImage->line($x-$length,$y-$length,$x+$length,$y+$length,$red);
! 342: $currentImage->line($x-$length,$y+$length,$x+$length,$y-$length,$red);
! 343:
! 344: my ($nameWOext) = ($image =~ /^.*\/(.*)\..*$/);
! 345: &Apache::lonxml::debug("graph name $nameWOext");
! 346: my $webImageName = "/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_".
! 347: $nameWOext.'.png'; #needs to be more random or specific
! 348: my $newImageName = '/home/httpd'.$webImageName;
! 349:
! 350: my $imgfh = Apache::File->new('>'.$newImageName);
! 351: print $imgfh $currentImage->png;
! 352: $image = $webImageName;
! 353: }
! 354: &Apache::lonxml::debug("out image is $image");
! 355: if ( $Apache::imageresponse::conceptgroup
! 356: && !&Apache::response::showallfoils()) {
! 357: $Apache::response::conceptgroup{"$name.image"} = $image;
! 358: } else {
! 359: $Apache::response::foilgroup{"$name.image"} = $image;
! 360: }
! 361: } elsif ($target eq 'edit') {
! 362: $result=&Apache::edit::end_table();
! 363: } elsif ($target eq 'tex') {
! 364: my $src = &Apache::lonxml::endredirection;
! 365: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
! 366: my $width_param = '';
! 367: my $height_param = '';
! 368: my $scaling = .3;
! 369: my $image = Image::Magick->new;
! 370: my $current_figure = $image->Read($src);
! 371: $width_param = $image->Get('width') * $scaling;;
! 372: $height_param = $image->Get('height') * $scaling;;
! 373: undef $image;
! 374: my $epssrc = $src;
! 375: $epssrc =~ s/(\.gif|\.jpg)$/\.eps/i;
! 376: if (not -e $epssrc) {
! 377: my $localfile = $epssrc;
! 378: $localfile =~ s/.*(\/res)/$1/;
! 379: my $file;
! 380: my $path;
! 381: if ($localfile =~ m!(.*)/([^/]*)$!) {
! 382: $file = $2;
! 383: $path = $1.'/';
! 384: }
! 385: my $signal_eps = 0;
! 386: my @content_directory = &Apache::lonnet::dirlist($path);
! 387: for (my $iy=0;$iy<=$#content_directory;$iy++) {
! 388: my @tempo_array = split(/&/,$content_directory[$iy]);
! 389: $content_directory[$iy] = $tempo_array[0];
! 390: if ($file eq $tempo_array[0]) {
! 391: $signal_eps = 1;
! 392: last;
! 393: }
! 394: }
! 395: if ($signal_eps) {
! 396: my $eps_file = &Apache::lonnet::getfile($localfile);
! 397: } else {
! 398: $localfile = $src;
! 399: $localfile =~ s/.*(\/res)/$1/;
! 400: my $as = &Apache::lonnet::getfile($src);
! 401: }
! 402: }
1.19 sakharuk 403: my $file;
404: my $path;
1.36 ! albertel 405: if ($src =~ m!(.*)/([^/]*)$!) {
1.19 sakharuk 406: $file = $2;
407: $path = $1.'/';
1.36 ! albertel 408: }
! 409: my $newsrc = $src;
! 410: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
! 411: $file=~s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
! 412: #do we have any specified size of the picture?
! 413: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
! 414: my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
! 415: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
! 416: if ($TeXwidth ne '') {
! 417: $width_param = $TeXwidth;
! 418: } elsif ($TeXheight ne '') {
! 419: $width_param = $TeXheight/$height_param*$width_param;
! 420: } elsif ($width ne '') {
! 421: $width_param = $width*$scaling;
! 422: }
! 423: #where can we find the picture?
! 424: if (-e $newsrc) {
! 425: if ($path) {
! 426: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
1.19 sakharuk 427: }
428: } else {
1.36 ! albertel 429: my $temp_file;
! 430: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
! 431: $temp_file = Apache::File->new('>>'.$filename);
! 432: print $temp_file "$src\n";
! 433: $Apache::response::foilgroup{"$name.image"} ='\vskip 0 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
1.19 sakharuk 434: }
1.36 ! albertel 435: }
! 436: return $result;
1.1 albertel 437: }
438:
439: sub start_rectangle {
1.36 ! albertel 440: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 441: my $result='';
! 442: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
! 443: &Apache::lonxml::startredirection;
! 444: } elsif ($target eq 'edit') {
! 445: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser);
! 446: $result=&Apache::edit::tag_start($target,$token,'Rectangle').
! 447: &Apache::edit::editline($token->[1],$coords,'Coordinate Pairs',40).
! 448: &Apache::edit::entercoordpair(undef,'textnode').
! 449: &Apache::edit::end_row();
! 450: } elsif ($target eq "modified") {
! 451: my $coords=&Apache::lonxml::get_all_text('/rectangle',$parser);
! 452: $result=$token->[4].&Apache::edit::modifiedfield($token);
! 453: &Apache::lonxml::debug($result);
! 454: }
! 455: return $result;
1.1 albertel 456: }
457:
1.3 albertel 458: sub grade_rectangle {
1.36 ! albertel 459: my ($spec,$x,$y) = @_;
! 460: &Apache::lonxml::debug("Spec is $spec");
! 461: $spec=~m/rectangle:\(([0-9]+),([0-9]+)\)\-\(([0-9]+),([0-9]+)\)/;
! 462: my $x1=$1;
! 463: my $y1=$2;
! 464: my $x2=$3;
! 465: my $y2=$4;
! 466: &Apache::lonxml::debug("Point $x1,$y1,$x2,$y2");
! 467: if ($x1 > $x2) { my $temp=$x1;$x1=$x2;$x2=$temp; }
! 468: if ($y1 > $y2) { my $temp=$y1;$y1=$y2;$y2=$temp; }
! 469: if (($x >= $x1) && ($x <= $x2) && ($y >= $y1) && ($y <= $y2)) {
! 470: return 'APPROX_ANS';
! 471: }
! 472: return 'INCORRECT';
1.3 albertel 473: }
474:
1.1 albertel 475: sub end_rectangle {
1.36 ! albertel 476: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
! 477: my $result;
! 478: if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') {
! 479: my $name = $Apache::imageresponse::curname;
! 480: my $area = &Apache::lonxml::endredirection;
! 481: &Apache::lonxml::debug("out is $area for $name");
! 482: if ( $Apache::imageresponse::conceptgroup
! 483: && !&Apache::response::showallfoils()) {
! 484: push @{ $Apache::response::conceptgroup{"$name.area"} },"rectangle:$area";
! 485: } else {
! 486: push @{ $Apache::response::foilgroup{"$name.area"} },"rectangle:$area";
! 487: }
! 488: } elsif ($target eq 'edit') {
! 489: $result=&Apache::edit::end_table();
! 490: }
! 491: return $result;
1.1 albertel 492: }
493: 1;
494: __END__
495:
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