--- loncom/interface/londocs.pm 2002/07/24 20:40:58 1.2
+++ loncom/interface/londocs.pm 2012/12/13 03:59:56 1.484.2.16
@@ -1,41 +1,5165 @@
# The LearningOnline Network
# Documents
#
-# (Internal Server Error Handler
+# $Id: londocs.pm,v 1.484.2.16 2012/12/13 03:59:56 raeburn Exp $
#
-# (Login Screen
-# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
-# 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
+# Copyright Michigan State University Board of Trustees
#
-# 3/1/1 Gerd Kortemeyer)
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
-# 3/1 Gerd Kortemeyer
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
+
package Apache::londocs;
use strict;
-use Apache::Constants qw(:common);
+use Apache::Constants qw(:common :http);
+use Apache::imsexport;
+use Apache::lonnet;
+use Apache::loncommon;
+use Apache::lonhtmlcommon;
+use LONCAPA::map();
+use Apache::lonratedt();
+use Apache::lonxml;
+use Apache::lonclonecourse;
+use Apache::lonnavmaps;
+use Apache::lonnavdisplay();
+use Apache::lonuserstate();
+use HTML::Entities;
+use HTML::TokeParser;
+use GDBM_File;
+use Apache::lonlocal;
+use Cwd;
+use LONCAPA qw(:DEFAULT :match);
+
+my $iconpath;
+
+my %hash;
+
+my $hashtied;
+my %alreadyseen=();
+
+my $hadchanges;
+
+
+my %help=();
+
+
+sub mapread {
+ my ($coursenum,$coursedom,$map)=@_;
+ return
+ &LONCAPA::map::mapread('/uploaded/'.$coursedom.'/'.$coursenum.'/'.
+ $map);
+}
+
+sub storemap {
+ my ($coursenum,$coursedom,$map,$contentchg)=@_;
+ my $report;
+ if (($contentchg) && ($map =~ /^default/)) {
+ $report = 1;
+ }
+ my ($outtext,$errtext)=
+ &LONCAPA::map::storemap('/uploaded/'.$coursedom.'/'.$coursenum.'/'.
+ $map,1,$report);
+ if ($errtext) { return ($errtext,2); }
+
+ $hadchanges=1;
+ return ($errtext,0);
+}
+
+
+
+sub authorhosts {
+ my %outhash=();
+ my $home=0;
+ my $other=0;
+ foreach my $key (keys(%env)) {
+ if ($key=~/^user\.role\.(au|ca)\.(.+)$/) {
+ my $role=$1;
+ my $realm=$2;
+ my ($start,$end)=split(/\./,$env{$key});
+ if (($start) && ($start>time)) { next; }
+ if (($end) && (time>$end)) { next; }
+ my ($ca,$cd);
+ if ($1 eq 'au') {
+ $ca=$env{'user.name'};
+ $cd=$env{'user.domain'};
+ } else {
+ ($cd,$ca)=($realm=~/^\/($match_domain)\/($match_username)$/);
+ }
+ my $allowed=0;
+ my $myhome=&Apache::lonnet::homeserver($ca,$cd);
+ my @ids=&Apache::lonnet::current_machine_ids();
+ foreach my $id (@ids) {
+ if ($id eq $myhome) {
+ $allowed=1;
+ last;
+ }
+ }
+ if ($allowed) {
+ $home++;
+ $outhash{'home_'.$ca.':'.$cd}=1;
+ } else {
+ $outhash{'otherhome_'.$ca.':'.$cd}=$myhome;
+ $other++;
+ }
+ }
+ }
+ return ($home,$other,%outhash);
+}
+
+
+sub clean {
+ my ($title)=@_;
+ $title=~s/[^\w\/\!\$\%\^\*\-\_\=\+\;\:\,\\\|\`\~]+/\_/gs;
+ return $title;
+}
+
+
+
+sub dumpcourse {
+ my ($r) = @_;
+ my $crstype = &Apache::loncommon::course_type();
+ $r->print(&Apache::loncommon::start_page('Dump '.$crstype.' Content to Authoring Space')."\n".
+ &Apache::lonhtmlcommon::breadcrumbs('Dump '.$crstype.' Content to Authoring Space')."\n");
+ $r->print(&startContentScreen('tools'));
+ my ($home,$other,%outhash)=&authorhosts();
+ unless ($home) {
+ $r->print(&endContentScreen());
+ return '';
+ }
+ my $origcrsid=$env{'request.course.id'};
+ my %origcrsdata=&Apache::lonnet::coursedescription($origcrsid);
+ if (($env{'form.authorspace'}) && ($env{'form.authorfolder'}=~/\w/)) {
+# Do the dumping
+ unless ($outhash{'home_'.$env{'form.authorspace'}}) {
+ $r->print(&endContentScreen());
+ return '';
+ }
+ my ($ca,$cd)=split(/\@/,$env{'form.authorspace'});
+ $r->print('
'.&mt('Copying Files').'
');
+ my $title=$env{'form.authorfolder'};
+ $title=&clean($title);
+ my %replacehash=();
+ foreach my $key (keys(%env)) {
+ if ($key=~/^form\.namefor\_(.+)/) {
+ $replacehash{$1}=$env{$key};
+ }
+ }
+ my $crs='/uploaded/'.$env{'request.course.id'}.'/';
+ $crs=~s/\_/\//g;
+ foreach my $item (keys(%replacehash)) {
+ my $newfilename=$title.'/'.$replacehash{$item};
+ $newfilename=~s/\.(\w+)$//;
+ my $ext=$1;
+ $newfilename=&clean($newfilename);
+ $newfilename.='.'.$ext;
+ my @dirs=split(/\//,$newfilename);
+ my $path=$r->dir_config('lonDocRoot')."/priv/$cd/$ca";
+ my $makepath=$path;
+ my $fail=0;
+ for (my $i=0;$i<$#dirs;$i++) {
+ $makepath.='/'.$dirs[$i];
+ unless (-e $makepath) {
+ unless(mkdir($makepath,0777)) { $fail=1; }
+ }
+ }
+ $r->print(' '.$item.' => '.$newfilename.': ');
+ if (my $fh=Apache::File->new('>'.$path.'/'.$newfilename)) {
+ if ($item=~/\.(sequence|page|html|htm|xml|xhtml)$/) {
+ print $fh &Apache::lonclonecourse::rewritefile(
+ &Apache::lonclonecourse::readfile($env{'request.course.id'},$item),
+ (%replacehash,$crs => '')
+ );
+ } else {
+ print $fh
+ &Apache::lonclonecourse::readfile($env{'request.course.id'},$item);
+ }
+ $fh->close();
+ } else {
+ $fail=1;
+ }
+ if ($fail) {
+ $r->print(''.&mt('fail').'');
+ } else {
+ $r->print(''.&mt('ok').'');
+ }
+ }
+ } else {
+ $r->print(&mt('Searching ...').' ');
+ $r->rflush();
+# Input form
+ $r->print('');
+ }
+ $r->print(&endContentScreen());
+}
+
+sub group_import {
+ my ($coursenum, $coursedom, $folder, $container, $caller, @files) = @_;
+
+ while (@files) {
+ my ($name, $url, $residx) = @{ shift(@files) };
+ if (($url =~ m{^/uploaded/\Q$coursedom\E/\Q$coursenum\E/(default_\d+\.)(page|sequence)$})
+ && ($caller eq 'londocs')
+ && (!&Apache::lonnet::stat_file($url))) {
+
+ my $errtext = '';
+ my $fatal = 0;
+ my $newmapstr = '';
+ $env{'form.output'}=$newmapstr;
+ my $result=&Apache::lonnet::finishuserfileupload($coursenum,$coursedom,
+ 'output',$1.$2);
+ if ($result != m|^/uploaded/|) {
+ $errtext.='Map not saved: A network error occurred when trying to save the new map. ';
+ $fatal = 2;
+ }
+ if ($fatal) {
+ return ($errtext,$fatal);
+ }
+ }
+ if ($url) {
+ if (!$residx
+ || defined($LONCAPA::map::zombies[$residx])) {
+ $residx = &LONCAPA::map::getresidx($url,$residx);
+ push(@LONCAPA::map::order, $residx);
+ }
+ my $ext = 'false';
+ if ($url=~m{^http://} || $url=~m{^https://}) { $ext = 'true'; }
+ $url = &LONCAPA::map::qtunescape($url);
+ $name = &LONCAPA::map::qtunescape($name);
+ $LONCAPA::map::resources[$residx] =
+ join(':', ($name, $url, $ext, 'normal', 'res'));
+ }
+ }
+ return &storemap($coursenum, $coursedom, $folder.'.'.$container,1);
+}
+
+sub breadcrumbs {
+ my ($allowed,$crstype)=@_;
+ &Apache::lonhtmlcommon::clear_breadcrumbs();
+ my (@folders);
+ if ($env{'form.pagepath'}) {
+ @folders = split('&',$env{'form.pagepath'});
+ } else {
+ @folders=split('&',$env{'form.folderpath'});
+ }
+ my $folderpath;
+ my $plain='';
+ my $randompick=-1;
+ my $isencrypted=0;
+ my $ishidden=0;
+ my $is_random_order=0;
+ while (@folders) {
+ my $folder=shift(@folders);
+ my $foldername=shift(@folders);
+ if ($folderpath) {$folderpath.='&';}
+ $folderpath.=$folder.'&'.$foldername;
+ my $url;
+ if ($allowed) {
+ $url = '/adm/coursedocs?folderpath=';
+ } else {
+ $url = '/adm/supplemental?folderpath=';
+ }
+ $url .= &escape($folderpath);
+ my $name=&unescape($foldername);
+# randompick number, hidden, encrypted, random order, is appended with ":"s to the foldername
+ $name=~s/\:(\d*)\:(\w*)\:(\w*):(\d*)$//;
+ if ($1 ne '') {
+ $randompick=$1;
+ } else {
+ $randompick=-1;
+ }
+ if ($2) { $ishidden=1; }
+ if ($3) { $isencrypted=1; }
+ if ($4 ne '') { $is_random_order = 1; }
+ if ($folder eq 'supplemental') {
+ $name = &mt('Supplemental '.$crstype.' Content');
+ }
+ &Apache::lonhtmlcommon::add_breadcrumb(
+ {'href'=>$url,
+ 'title'=>$name,
+ 'text'=>$name,
+ 'no_mt'=>1,
+ });
+ $plain.=$name.' > ';
+ }
+ $plain=~s/\>\;\s*$//;
+ return (&Apache::lonhtmlcommon::breadcrumbs(undef,undef,0,'nohelp',
+ undef, undef, 1 ),$randompick,$ishidden,
+ $isencrypted,$plain,$is_random_order);
+}
+
+sub log_docs {
+ return &Apache::lonnet::write_log('course','docslog',@_);
+}
+
+{
+ my @oldresources=();
+ my @oldorder=();
+ my $parmidx;
+ my %parmaction=();
+ my %parmvalue=();
+ my $changedflag;
+
+ sub snapshotbefore {
+ @oldresources=@LONCAPA::map::resources;
+ @oldorder=@LONCAPA::map::order;
+ $parmidx=undef;
+ %parmaction=();
+ %parmvalue=();
+ $changedflag=0;
+ }
+
+ sub remember_parms {
+ my ($idx,$parameter,$action,$value)=@_;
+ $parmidx=$idx;
+ $parmaction{$parameter}=$action;
+ $parmvalue{$parameter}=$value;
+ $changedflag=1;
+ }
+
+ sub log_differences {
+ my ($plain)=@_;
+ my %storehash=('folder' => $plain,
+ 'currentfolder' => $env{'form.folder'});
+ if ($parmidx) {
+ $storehash{'parameter_res'}=$oldresources[$parmidx];
+ foreach my $parm (keys(%parmaction)) {
+ $storehash{'parameter_action_'.$parm}=$parmaction{$parm};
+ $storehash{'parameter_value_'.$parm}=$parmvalue{$parm};
+ }
+ }
+ my $maxidx=$#oldresources;
+ if ($#LONCAPA::map::resources>$#oldresources) {
+ $maxidx=$#LONCAPA::map::resources;
+ }
+ for (my $idx=0; $idx<=$maxidx; $idx++) {
+ if ($LONCAPA::map::resources[$idx] ne $oldresources[$idx]) {
+ $storehash{'before_resources_'.$idx}=$oldresources[$idx];
+ $storehash{'after_resources_'.$idx}=$LONCAPA::map::resources[$idx];
+ $changedflag=1;
+ }
+ if ($LONCAPA::map::order[$idx] ne $oldorder[$idx]) {
+ $storehash{'before_order_res_'.$idx}=$oldresources[$oldorder[$idx]];
+ $storehash{'after_order_res_'.$idx}=$LONCAPA::map::resources[$LONCAPA::map::order[$idx]];
+ $changedflag=1;
+ }
+ }
+ $storehash{'maxidx'}=$maxidx;
+ if ($changedflag) { &log_docs(\%storehash); }
+ }
+}
+
+sub docs_change_log {
+ my ($r,$coursenum,$coursedom,$folder,$allowed,$crstype,$iconpath)=@_;
+ my $supplementalflag=($env{'form.folderpath'}=~/^supplemental/);
+ my $js = ''."\n";
+ $r->print(&Apache::loncommon::start_page('Content Change Log',$js));
+ $r->print(&Apache::lonhtmlcommon::breadcrumbs('Content Change Log'));
+ $r->print(&startContentScreen(($supplementalflag?'suppdocs':'docs')));
+ my %orderhash;
+ my $container='sequence';
+ my $pathitem;
+ if ($env{'form.pagepath'}) {
+ $container='page';
+ $pathitem = '';
+ } else {
+ my $folderpath=$env{'form.folderpath'};
+ if ($folderpath eq '') {
+ $folderpath = 'default&'.&escape(&mt('Main '.$crstype.' Documents'));
+ }
+ $pathitem = '';
+ }
+ my $readfile="/uploaded/$coursedom/$coursenum/$folder.$container";
+ my $jumpto = $readfile;
+ $jumpto =~ s{^/}{};
+ my $tid = 1;
+ if ($supplementalflag) {
+ $tid = 2;
+ }
+ my ($breadcrumbtrail) = &breadcrumbs($allowed,$crstype);
+ $r->print($breadcrumbtrail.
+ &generate_edit_table($tid,\%orderhash,undef,$iconpath,$jumpto,
+ $readfile));
+ my %docslog=&Apache::lonnet::dump('nohist_docslog',
+ $env{'course.'.$env{'request.course.id'}.'.domain'},
+ $env{'course.'.$env{'request.course.id'}.'.num'});
+
+ if ((keys(%docslog))[0]=~/^error\:/) { undef(%docslog); }
+
+ my %saveable_parameters = ('show' => 'scalar',);
+ &Apache::loncommon::store_course_settings('docs_log',
+ \%saveable_parameters);
+ &Apache::loncommon::restore_course_settings('docs_log',
+ \%saveable_parameters);
+ if (!$env{'form.show'}) { $env{'form.show'}=10; }
+# FIXME: internationalization seems wrong here
+ my %lt=('hiddenresource' => 'Resources hidden',
+ 'encrypturl' => 'URL hidden',
+ 'randompick' => 'Randomly pick',
+ 'randomorder' => 'Randomly ordered',
+ 'set' => 'set to',
+ 'del' => 'deleted');
+ my $filter = &Apache::loncommon::display_filter('docslog')."\n".
+ $pathitem."\n".
+ ''.
+ (' 'x2).'';
+ $r->print('
'."\n".
+ &mt('The following files are either dependencies of a web page or references within a folder and/or composite page which could not be copied during the paste operation:')."\n".
+ '
'."\n");
+ foreach my $key (sort(keys(%paste_errors))) {
+ $r->print('
'.$key.'
'."\n");
+ }
+ $r->print('
'."\n");
+ }
+ }
+
+ $r->print($upload_output);
+
+ if (&handle_edit_cmd()) {
+ my $contentchg;
+ if ($env{'form.cmd'} =~ /^(del|cut)_/) {
+ $contentchg = 1;
+ }
+ ($errtext,$fatal)=&storemap($coursenum,$coursedom,$folder.'.'.$container,$contentchg);
+ return $errtext if ($fatal);
+ }
+# Group import/search
+ if ($env{'form.importdetail'}) {
+ my @imports;
+ foreach my $item (split(/\&/,$env{'form.importdetail'})) {
+ if (defined($item)) {
+ my ($name,$url,$residx)=
+ map {&unescape($_)} split(/\=/,$item);
+ if ($url=~ m{^\Q/uploaded/$coursedom/$coursenum/\E(default|supplemental)_new\.(sequence|page)$}) {
+ my ($suffix,$errortxt,$locknotfreed) =
+ &newmap_suffix($1,$2,$coursedom,$coursenum);
+ if ($locknotfreed) {
+ $r->print($locknotfreed);
+ }
+ if ($suffix) {
+ $url =~ s/_new\./_$suffix./;
+ } else {
+ return $errortxt;
+ }
+ }
+ push(@imports, [$name, $url, $residx]);
+ }
+ }
+ ($errtext,$fatal)=&group_import($coursenum, $coursedom, $folder,
+ $container,'londocs',@imports);
+ return $errtext if ($fatal);
+ }
+# Loading a complete map
+ if ($env{'form.loadmap'}) {
+ if ($env{'form.importmap'}=~/\w/) {
+ foreach my $res (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$env{'form.importmap'}))) {
+ my ($title,$url,$ext,$type)=split(/\:/,$res);
+ my $idx=&LONCAPA::map::getresidx($url);
+ $LONCAPA::map::resources[$idx]=$res;
+ $LONCAPA::map::order[$#LONCAPA::map::order+1]=$idx;
+ }
+ ($errtext,$fatal)=&storemap($coursenum,$coursedom,
+ $folder.'.'.$container,1);
+ return $errtext if ($fatal);
+ } else {
+ $r->print('
'.&mt('No map selected.').'
');
+
+ }
+ }
+ &log_differences($plain);
+ }
+# ---------------------------------------------------------------- End commands
+# ---------------------------------------------------------------- Print screen
+ my $idx=0;
+ my $shown=0;
+ if (($ishidden) || ($isencrypted) || ($randompick>=0) || ($is_random_order)) {
+ $r->print('
':'').
+ '');
+ if ($randompick>=0) {
+ $r->print('
'
+ .&mt('Caution: this folder is set to randomly pick a subset'
+ .' of resources. Adding or removing resources from this'
+ .' folder will change the set of resources that the'
+ .' students see, resulting in spurious or missing credit'
+ .' for completed problems, not limited to ones you'
+ .' modify. Do not modify the contents of this folder if'
+ .' it is in active student use.')
+ .'
'
+ .&mt('Caution: this folder is set to randomly order its'
+ .' contents. Adding or removing resources from this folder'
+ .' will change the order of resources shown.')
+ .'
+ENDPARMS
+ }
+ $line.=&Apache::loncommon::end_data_table_row();
+ return $line;
+}
+
+sub newmap_suffix {
+ my ($area,$container,$coursedom,$coursenum) = @_;
+ my ($prefix,$idtype,$errtext,$locknotfreed);
+ $prefix = 'docs';
+ if ($area eq 'supplemental') {
+ $prefix = 'supp';
+ }
+ $prefix .= $container;
+ $idtype = 'concat';
+ my ($suffix,$freedlock,$error) =
+ &Apache::lonnet::get_timebased_id($prefix,'num','uploadedmaps',
+ $coursedom,$coursenum);
+ if (!$suffix) {
+ $errtext = &mt('Failed to acquire a unique timestamp-based suffix for the new folder/page.');
+ if ($error) {
+ $errtext .= ' '.$error;
+ }
+ }
+ if ($freedlock ne 'ok') {
+ $locknotfreed = '
'.&mt('There was a problem removing a lockfile. This will prevent creation of additional folders or composite pages in this course. Please contact the domain coordinator for your LON-CAPA domain.').'
'.
+ &mt('Unable to retrieve information about course contents').
+ '
');
+ &Apache::lonnet::logthis('Symb list failed - could not create navmap object in '.lc($crstype).':'.$env{'request.course.id'});
+ } else {
+ $r->print('
');
+ $hashtied=0;
+ undef %alreadyseen;
+ %alreadyseen=();
+ &tiehash();
+
+ foreach my $key (keys(%hash)) {
+ if ($hash{$key}=~/\.(page|sequence)$/) {
+ if (($key=~/^src_/) && ($alreadyseen{&unescape($hash{$key})})) {
+ $r->print(''.
+ &mt('The following sequence or page is included more than once in your '.$crstype.':').' '.
+ &unescape($hash{$key}).' '.
+ &mt('Note that grading records for problems included in this sequence or folder will overlap.').'');
+ }
+ }
+ if (($key=~/^src\_(.+)$/) && (!$alreadyseen{&unescape($hash{$key})})) {
+ &checkonthis($r,$hash{$key},0,$hash{'title_'.$1});
+ }
+ }
+ &untiehash();
+ $r->print('
'.&mt('Done').'
');
+}
+
+
+sub devalidateversioncache {
+ my $src=shift;
+ &Apache::lonnet::devalidate_cache_new('courseresversion',$env{'request.course.id'}.'_'.
+ &Apache::lonnet::clutter($src));
+}
+
+sub checkversions {
+ my ($r) = @_;
+ my $crstype = &Apache::loncommon::course_type();
+ $r->print(&Apache::loncommon::start_page("Check $crstype Document Versions"));
+ $r->print(&Apache::lonhtmlcommon::breadcrumbs("Check $crstype Document Versions"));
+ $r->print(&startContentScreen('tools'));
+
+ my $header='';
+ my $startsel='';
+ my $monthsel='';
+ my $weeksel='';
+ my $daysel='';
+ my $allsel='';
+ my %changes=();
+ my $starttime=0;
+ my $haschanged=0;
+ my %setversions=&Apache::lonnet::dump('resourceversions',
+ $env{'course.'.$env{'request.course.id'}.'.domain'},
+ $env{'course.'.$env{'request.course.id'}.'.num'});
+
+ $hashtied=0;
+ &tiehash();
+ my %newsetversions=();
+ if ($env{'form.setmostrecent'}) {
+ $haschanged=1;
+ foreach my $key (keys(%hash)) {
+ if ($key=~/^ids\_(\/res\/.+)$/) {
+ $newsetversions{$1}='mostrecent';
+ &devalidateversioncache($1);
+ }
+ }
+ } elsif ($env{'form.setcurrent'}) {
+ $haschanged=1;
+ foreach my $key (keys(%hash)) {
+ if ($key=~/^ids\_(\/res\/.+)$/) {
+ my $getvers=&Apache::lonnet::getversion($1);
+ if ($getvers>0) {
+ $newsetversions{$1}=$getvers;
+ &devalidateversioncache($1);
+ }
+ }
+ }
+ } elsif ($env{'form.setversions'}) {
+ $haschanged=1;
+ foreach my $key (keys(%env)) {
+ if ($key=~/^form\.set_version_(.+)$/) {
+ my $src=$1;
+ if (($env{$key}) && ($env{$key} ne $setversions{$src})) {
+ $newsetversions{$src}=$env{$key};
+ &devalidateversioncache($src);
+ }
+ }
+ }
+ }
+ if ($haschanged) {
+ if (&Apache::lonnet::put('resourceversions',\%newsetversions,
+ $env{'course.'.$env{'request.course.id'}.'.domain'},
+ $env{'course.'.$env{'request.course.id'}.'.num'}) eq 'ok') {
+ $r->print(&Apache::loncommon::confirmwrapper(
+ &Apache::lonhtmlcommon::confirm_success(&mt('Your Version Settings have been Saved'))));
+ } else {
+ $r->print(&Apache::loncommon::confirmwrapper(
+ &Apache::lonhtmlcommon::confirm_success(&mt('An Error Occured while Attempting to Save your Version Settings'),1)));
+ }
+ &mark_hash_old();
+ }
+ &changewarning($r,'');
+ if ($env{'form.timerange'} eq 'all') {
+# show all documents
+ $header=&mt('All Documents in '.$crstype);
+ $allsel=1;
+ foreach my $key (keys(%hash)) {
+ if ($key=~/^ids\_(\/res\/.+)$/) {
+ my $src=$1;
+ $changes{$src}=1;
+ }
+ }
+ } else {
+# show documents which changed
+ %changes=&Apache::lonnet::dump
+ ('versionupdate',$env{'course.'.$env{'request.course.id'}.'.domain'},
+ $env{'course.'.$env{'request.course.id'}.'.num'});
+ my $firstkey=(keys(%changes))[0];
+ unless ($firstkey=~/^error\:/) {
+ unless ($env{'form.timerange'}) {
+ $env{'form.timerange'}=604800;
+ }
+ my $seltext=&mt('during the last').' '.$env{'form.timerange'}.' '
+ .&mt('seconds');
+ if ($env{'form.timerange'}==-1) {
+ $seltext='since start of course';
+ $startsel='selected';
+ $env{'form.timerange'}=time;
+ }
+ $starttime=time-$env{'form.timerange'};
+ if ($env{'form.timerange'}==2592000) {
+ $seltext=&mt('during the last month').' ('.&Apache::lonlocal::locallocaltime($starttime).')';
+ $monthsel='selected';
+ } elsif ($env{'form.timerange'}==604800) {
+ $seltext=&mt('during the last week').' ('.&Apache::lonlocal::locallocaltime($starttime).')';
+ $weeksel='selected';
+ } elsif ($env{'form.timerange'}==86400) {
+ $seltext=&mt('since yesterday').' ('.&Apache::lonlocal::locallocaltime($starttime).')';
+ $daysel='selected';
+ }
+ $header=&mt('Content changed').' '.$seltext;
+ } else {
+ $header=&mt('No content modifications yet.');
+ }
+ }
+ %setversions=&Apache::lonnet::dump('resourceversions',
+ $env{'course.'.$env{'request.course.id'}.'.domain'},
+ $env{'course.'.$env{'request.course.id'}.'.num'});
+ my %lt=&Apache::lonlocal::texthash
+ ('st' => 'Version changes since start of '.$crstype,
+ 'lm' => 'Version changes since last Month',
+ 'lw' => 'Version changes since last Week',
+ 'sy' => 'Version changes since Yesterday',
+ 'al' => 'All Resources (possibly large output)',
+ 'cd' => 'Change display',
+ 'sd' => 'Display',
+ 'fi' => 'File',
+ 'md' => 'Modification Date',
+ 'mr' => 'Most recently published Version',
+ 've' => 'Version used in '.$crstype,
+ 'vu' => 'Set Version to be used in '.$crstype,
+'sv' => 'Set Versions to be used in '.$crstype.' according to Selections below',
+'sm' => 'Keep all Resources up-to-date with most recent Versions (default)',
+'sc' => 'Set all Resource Versions to current Version (Fix Versions)',
+ 'di' => 'Differences',
+ 'save' => 'Save changes',
+ 'vers' => 'Version choice(s) for specific resources',
+ 'act' => 'Actions');
+ $r->print(<$header
+