--- loncom/interface/Attic/lonspreadsheet.pm	2000/12/05 15:09:22	1.5
+++ loncom/interface/Attic/lonspreadsheet.pm	2000/12/09 19:14:20	1.10
@@ -1,17 +1,19 @@
 # The LearningOnline Network with CAPA
 # Spreadsheet/Grades Display Handler
 #
-# 11/11,11/15,11/27,12/04,12/05 Gerd Kortemeyer
+# 11/11,11/15,11/27,12/04,12/05,12/06,12/07,12/08,12/09 Gerd Kortemeyer
 
 package Apache::lonspreadsheet;
 
 use strict;
+use vars qw(%spreadsheets);
 use Safe;
 use Safe::Hole;
 use Opcode;
 use Apache::lonnet;
-use Apache::Constants qw(:common);
+use Apache::Constants qw(:common :http);
 use HTML::TokeParser;
+use GDBM_File;
 
 # =============================================================================
 # ===================================== Implements an instance of a spreadsheet
@@ -31,31 +33,41 @@ sub initsheet {
 # f: formulas
 # t: intermediate format (variable references expanded)
 # v: output values
-#
+# c: preloaded constants (A-column)
+# rl: row label
 
 %v=(); 
 %t=();
 %f=();
+%c=();
+%rl=();
+
+$maxrow=0;
 $sheettype='';
 $filename='';
 
 sub mask {
     my ($lower,$upper)=@_;
 
-    $lower=~/([A-Z]|\*)(\d+|\*)/;
+    $lower=~/([A-Za-z]|\*)(\d+|\*)/;
     my $la=$1;
     my $ld=$2;
 
-    $upper=~/([A-Z]|\*)(\d+|\*)/;
+    $upper=~/([A-Za-z]|\*)(\d+|\*)/;
     my $ua=$1;
     my $ud=$2;
     my $alpha='';
     my $num='';
 
     if (($la eq '*') || ($ua eq '*')) {
-       $alpha='[A-Z]';
+       $alpha='[A-Za-z]';
     } else {
-       $alpha='['.$la.'-'.$ua.']';
+       if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
+           ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
+          $alpha='['.$la.'-'.$ua.']';
+       } else {
+          $alpha='['.$la.'-Za-'.$ua.']';
+       }
     }   
 
     if (($ld eq '*') || ($ud eq '*')) {
@@ -77,11 +89,13 @@ sub mask {
        } else {
            my @lda=($ld=~m/\d/g);
            my @uda=($ud=~m/\d/g);
-           my $i; $j=0;
-           for ($i=0;$i<=$#lda;$i++) {
+           my $i; $j=0; $notdone=1;
+           for ($i=0;($i<=$#lda)&&($notdone);$i++) {
                if ($lda[$i]==$uda[$i]) {
 		   $num.=$lda[$i];
                    $j=$i;
+               } else {
+                   $notdone=0;
                }
            }
            if ($j<$#lda-1) {
@@ -99,7 +113,9 @@ sub mask {
                }
                $num.=')';
            } else {
-               $num.='['.$lda[$#lda].'-'.$uda[$#uda].']';
+               if ($lda[$#lda]!=$uda[$#uda]) {
+                  $num.='['.$lda[$#lda].'-'.$uda[$#uda].']';
+	       }
            }
        }
     }
@@ -230,9 +246,15 @@ sub sett {
     %t=();
     map {
 	if ($f{$_}) {
-	    $t{$_}=$f{$_};
-            $t{$_}=~s/\.+/\,/g;
-            $t{$_}=~s/(^|[^\"\'])([A-Z]\d+)/$1\$v\{\'$2\'\}/g;
+            if ($_=~/^A/) {
+	        unless ($f{$_}=~/^\!/) {
+		    $t{$_}=$c{$_};
+                }
+            } else {
+	       $t{$_}=$f{$_};
+               $t{$_}=~s/\.\.+/\,/g;
+               $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
+            }
         }
     } keys %f;
 }
@@ -262,6 +284,25 @@ sub calc {
     return '';
 }
 
+sub outrow {
+    my $n=shift;
+    my @cols=();
+    if ($n) {
+       $cols[0]=$rl{$f{'A'.$n}};
+    } else {
+       $cols[0]='<b><font size=+1>Export</font></b>';
+    }
+    map {
+        my $fm=$f{$_.$n};
+        $fm=~s/[\'\"]/\&\#34;/g;
+        $cols[$#cols+1]="'$_$n','$fm'".'___eq___'.$v{$_.$n};
+    } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
+       'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
+       'a','b','c','d','e','f','g','h','i','j','k','l','m',
+       'n','o','p','q','r','s','t','u','v','w','x','y','z');
+    return @cols;
+}
+
 # ------------------------------------------- End of "Inside of the safe space"
 ENDDEFS
     $safeeval->reval($code);
@@ -272,7 +313,21 @@ ENDDEFS
 
 sub setformulas {
     my ($safeeval,@f)=@_;
-    $safeeval->reval('%f=(%f,'."('".join("','",@f)."'));");
+    $safeeval->reval('%f='."('".join("','",@f)."');");
+}
+
+# ------------------------------------------------ Add or change formula values
+
+sub setconstants {
+    my ($safeeval,@c)=@_;
+    $safeeval->reval('%c='."('".join("','",@c)."');");
+}
+
+# ------------------------------------------------ Add or change formula values
+
+sub setrowlabels {
+    my ($safeeval,@rl)=@_;
+    $safeeval->reval('%rl='."('".join("','",@rl)."');");
 }
 
 # ------------------------------------------------------- Calculate spreadsheet
@@ -309,15 +364,28 @@ sub gettype {
     my $safeeval=shift;
     return $safeeval->reval('$sheettype');
 }
+# ------------------------------------------------------------------ Set maxrow
 
-# -------------------------------------------------------------------- Set type
+sub setmaxrow {
+    my ($safeeval,$row)=@_;
+    $safeeval->reval('$maxrow='.$row.';');
+}
+
+# ------------------------------------------------------------------ Get maxrow
+
+sub getmaxrow {
+    my $safeeval=shift;
+    return $safeeval->reval('$maxrow');
+}
+
+# ---------------------------------------------------------------- Set filename
 
 sub setfilename {
     my ($safeeval,$fn)=@_;
     $safeeval->reval('$filename='.$fn.';');
 }
 
-# -------------------------------------------------------------------- Get type
+# ---------------------------------------------------------------- Get filename
 
 sub getfilename {
     my $safeeval=shift;
@@ -328,22 +396,76 @@ sub getfilename {
 # =============================================================================
 
 
+# --------------------------------------------- Produce output row n from sheet
+
+sub rown {
+    my ($safeeval,$n)=@_;
+    my $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
+    my $rowdata="\n<tr><td><b><font size=+1>$n</font></b></td>";
+    my $showf=0;
+    map {
+       my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
+       my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
+       if ($showf==0) { $vl=$_; }
+       if ($showf<=1) { $bgcolor='#FFDDDD'; }
+       if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; } 
+       if ($showf>1) {
+	   if ($vl eq '') {
+	       $vl='<font size=+2 color='.$bgcolor.'>&#35;</font>';
+           }
+           $rowdata.=
+       '<td bgcolor='.$bgcolor.'><a href="javascript:celledit('.$fm.');">'.$vl.
+	       '</a></td>';
+       } else {
+           $rowdata.='<td bgcolor='.$bgcolor.'>&nbsp;'.$vl.'&nbsp;</td>';
+       }
+       $showf++;
+    } $safeeval->reval('&outrow('.$n.')');
+    return $rowdata.'</tr>';
+}
+
+# ------------------------------------------------------------- Print out sheet
+
+sub outsheet {
+    my $safeeval=shift;
+    my $tabledata='<table border=2><tr><td colspan=2>&nbsp;</td>'.
+                  '<td bgcolor=#FFDDDD><b>A Import</b></td>';
+    map {
+        $tabledata.="<td><b><font size=+1>$_</font></b></td>";
+    } ('B','C','D','E','F','G','H','I','J','K','L','M',
+       'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
+       'a','b','c','d','e','f','g','h','i','j','k','l','m',
+       'n','o','p','q','r','s','t','u','v','w','x','y','z');
+    $tabledata.='</tr>';
+    my $row;
+    my $maxrow=&getmaxrow($safeeval);
+    for ($row=0;$row<=$maxrow;$row++) {
+        $tabledata.=&rown($safeeval,$row);
+    }
+    $tabledata.='</table>';
+}
+
+
 
 # --------------------------------------- Read spreadsheet formulas from a file
 
 sub readsheet {
-    my ($safeeval,$fn)=shift;
+    my ($safeeval,$fn)=@_;
     &setfilename($safeeval,$fn);
     $fn=~/\.(\w+)/;
     &settype($safeeval,$1);
     my %f=();
-    my $content;
-    {
-      my $fh=Apache::File->new($fn);
-      $content=join('',<$fh>);
+    unless ($spreadsheets{$fn}) {
+       $spreadsheets{$fn}='';
+       {
+         my $fh;
+         if ($fh=Apache::File->new($fn)) {
+            $spreadsheets{$fn}=join('',<$fh>);
+         }
+       }
     }
     {
-      my $parser=HTML::TokeParser->new(\$content);
+      my $parser=HTML::TokeParser->new(\$spreadsheets{$fn});
       my $token;
       while ($token=$parser->get_token) {
          if ($token->[0] eq 'S') {
@@ -357,6 +479,41 @@ sub readsheet {
     &setformulas($safeeval,%f);
 }
 
+# ----------------------------------------------- Make a temp copy of the sheet
+
+sub tmpwrite {
+    my ($safeeval,$tmpdir,$uname,$udom,$symb)=@_;
+    my $fn=$uname.'_'.$udom.'_spreadsheet_'.&getfilename($safeeval);
+    $fn=~s/\W/\_/g;
+    $fn=$tmpdir.$fn.'.tmp';
+    my $fh;
+    if ($fh=Apache::File->new('>'.$fn)) {
+	print $fh join("\n",&getformulas($safeeval));
+    }
+}
+
+# ---------------------------------------------------------- Read the temp copy
+
+sub tmpread {
+    my ($safeeval,$tmpdir,$uname,$udom,$symb,$nfield,$nform)=@_;
+    my $fn=$uname.'_'.$udom.'_spreadsheet_'.&getfilename($safeeval);
+    $fn=~s/\W/\_/g;
+    $fn=$tmpdir.$fn.'.tmp';
+    my $fh;
+    my %fo=();
+    if ($fh=Apache::File->new($fn)) {
+        my $name;
+        while ($name=<$fh>) {
+	    chomp($name);
+            my $value=<$fh>;
+            chomp($value);
+            $fo{$name}=$value;
+        }
+    }
+    $fo{$nfield}=$nform;
+    &setformulas($safeeval,%fo);
+}
+
 # --------------------------------------------------------------- Read metadata
 
 sub readmeta {
@@ -411,7 +568,8 @@ sub updaterows {
 			    '___'.$resid.'___'.
 			    &Apache::lonnet::declutter($srcf);
 		 $allassess{$symb}=$bighash{'title_'.$id};
-                 if ($stype eq 'assesssheet') {
+
+                 if ($stype eq 'assesscalc') {
                    map {
                        if ($_=~/^stores\_(.*)/) {
 			  my $key=$_;
@@ -421,6 +579,8 @@ sub updaterows {
                               $display=
 			         &Apache::lonnet::metadata($srcf,$key.'.name');
                           }
+
+
                           $allkeys{$key}=$display;
 		       }
                    } split(/\,/,&Apache::lonnet::metadata($srcf,'keys'));
@@ -437,45 +597,196 @@ sub updaterows {
 # -------------------- Find discrepancies between the course row table and this
 #
         my %f=&getformulas($safeeval);
+        my $changed=0;
+
+        my %current=();
+        if ($stype eq 'assesscalc') {
+	    %current=%allkeys;
+        } elsif ($stype eq 'studentcalc') {
+            %current=%allassess;
+        }
+
+        my $maxrow=0;
+        my %existing=();
+
+# ----------------------------------------------------------- Now obsolete rows
 	map {
-	    if ($_=~/^A/) {
-		if ($stype eq 'assesssheet') {
-                } elsif ($stype eq 'coursesheet') {
+	    if ($_=~/^A(\d+)/) {
+                $maxrow=($1>$maxrow)?$1:$maxrow;
+                $existing{$f{$_}}=1;
+		unless (defined($current{$f{$_}})) {
+		   $f{$_}='!!! Obsolete';
+                   $changed=1;
                 }
             }
         } keys %f;
-# ------------------------------------------------ Find new and obsolete values
+
+# -------------------------------------------------------- New and unknown keys
+     
+        map {
+            unless ($existing{$_}) {
+		$changed=1;
+                $maxrow++;
+                $f{'A'.$maxrow}=$_;
+            }
+        } keys %current;        
+     
+        if ($changed) { &setformulas($safeeval,%f); }
+
+        &setmaxrow($safeeval,$maxrow);
+        &setrowlabels($safeeval,%current);
 
     } else {
         return 'Could not access course data';
     }
 }
 
-# -----------------------------------------------------------------------------
+# ------------------------------------------------ Load data for one assessment
 
-sub handler {
+sub rowaassess {
+    my ($safeeval,$uname,$udom,$symb)=@_;
+    my $uhome=&Apache::lonnet::homeserver($uname,$udom);
+    my $namespace;
+    unless ($namespace=$ENV{'request.course.id'}) { return ''; }
+    my $answer=reply("restore:$udom:$uname:$namespace:$symb",$uhome);
+    my %returnhash=();
+    map {
+	my ($name,$value)=split(/\=/,$_);
+        $returnhash{&unescape($name)}=&unescape($value);
+    } split(/\&/,$answer);
+    my $version;
+    for ($version=1;$version<=$returnhash{'version'};$version++) {
+       map {
+          $returnhash{$_}=$returnhash{$version.':'.$_};
+       } split(/\:/,$returnhash{$version.':keys'});
+    }
 
+    my %c=();
+    my %f=&getformulas($safeeval);
+    map {
+	if ($_=~/^A/) {
+            unless ($f{$_}=~/^\!/) {
+	       $c{$_}=$returnhash{$f{$_}};
+	    }
+        }
+    } keys %f;
+    &setconstants($safeeval,%c);
+}
+
+# --------------------------------------------------------- Various form fields
+
+sub textfield {
+    my ($title,$name,$value)=@_;
+    return "\n<p><b>$title:</b><br>".
+           '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
+}
+
+sub hiddenfield {
+    my ($name,$value)=@_;
+    return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
+}
+
+sub selectbox {
+    my ($title,$name,$value,%options)=@_;
+    my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
+    map {
+        $selout.='<option value="'.$_.'"';
+        if ($_ eq $value) { $selout.=' selected'; }
+        $selout.='>'.$options{$_}.'</option>';
+    } sort keys %options;
+    return $selout.'</select>';
+}
+
+# ---------------------------------------------------------------- Main handler
+
+sub handler {
     my $r=shift;
 
-  $r->content_type('text/html');
-  $r->send_http_header;
+   if ($r->header_only) {
+      $r->content_type('text/html');
+      $r->send_http_header;
+      return OK;
+   }
+
+# ----------------------------------------------------- Needs to be in a course
+
+  if (($ENV{'request.course.fn'}) || 
+      ($ENV{'request.state'} eq 'construct')) { 
+
+# --------------------------- Get query string for limited number of parameters
+    map {
+       my ($name, $value) = split(/=/,$_);
+       $value =~ tr/+/ /;
+       $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+       if (($name='uname') || ($name='udom') || ($name='usymb')) {
+           unless ($ENV{'form.'.$name}) {
+              $ENV{'form.'.$name}=$value;
+	   }
+       }
+    } (split(/&/,$ENV{'QUERY_STRING'}));
 
-  $r->print('<html><head><title>LON-CAPA Spreadsheet</title></head>');
-  $r->print('<body bgcolor="#FFFFFF">');
- 
-    my $sheetone=initsheet();
+# ------------------------------------------- Nothing there? Must be login user
 
-    &setformulas($sheetone,('A1' => '5', 'B2' => '6', 'C4' => 'A1+B2'));
-    $r->print(&calcsheet($sheetone));
-    my %output=&getformulas($sheetone);
-    
-    $r->print('FORM:'.$output{'A1'}.' '.$output{'B2'}.' '.$output{'C4'});
+    unless ($ENV{'form.uname'}) {
+	$ENV{'form.uname'}=$ENV{'user.name'};
+        $ENV{'form.udom'}=$ENV{'user.domain'};
+    }
+# ------------------------------------------------------------------- Open page
 
-    my %output=&getvalues($sheetone);
-    
-    $r->print('<br>OUT:'.$output{'A1'}.' '.$output{'B2'}.' '.$output{'C4'});
+    $r->content_type('text/html');
+    $r->send_http_header;
 
-    $r->print('</body></html>');
+    $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
+    $r->print(<<ENDSCRIPT);
+<script language="JavaScript">
+
+    function celledit(cn,cf) {
+        var cnf=prompt(cn,cf);
+	if (cnf!=null) {
+	    document.sheet.unewfield.value=cn;
+            document.sheet.unewformula.value=cnf;
+            document.sheet.submit();
+        }
+    }
+
+</script>
+ENDSCRIPT
+    $r->print('</head><body bgcolor="#FFFFFF">'.
+       '<form action="'.$r->uri.'" name=sheet method=post>'.
+       &hiddenfield('uname',$ENV{'form.uname'}).
+       &hiddenfield('udom',$ENV{'form.udom'}).
+       &hiddenfield('usymb',$ENV{'form.usymb'}).
+       &hiddenfield('unewfield','').
+       &hiddenfield('unewformula',''));
+    my $sheetone=initsheet();
+    if ($ENV{'form.unewfield'}) {
+        $r->print('<h2>Modified Workcopy</h2>');
+        $ENV{'form.unewformula'}=~s/\'/\"/g;
+        $r->print('New formula: '.$ENV{'form.unewfield'}.'='.
+                  $ENV{'form.unewformula'}.'<br>');
+	&tmpread($sheetone,$r->dir_config('lonDaemons').'/tmp/',
+                 $ENV{'form.uname'},$ENV{'form.udom'},$ENV{'form.usymb'},
+                 $ENV{'form.unewfield'},$ENV{'form.unewformula'});
+        &setfilename($sheetone,$r->filename);
+        $r->filename=~/\.(\w+)/;
+        &settype($sheetone,$1);
+   } else {
+        &readsheet($sheetone,$r->filename);
+    }
+    &updaterows($sheetone);
+    &tmpwrite($sheetone,$r->dir_config('lonDaemons').'/tmp/',
+              $ENV{'form.uname'},$ENV{'form.udom'},$ENV{'form.usymb'});
+    &calcsheet($sheetone);
+    $r->print(&outsheet($sheetone));
+
+    $r->print('</form></body></html>');
+
+  } else {
+# ----------------------------- Not in a course, or not allowed to modify parms
+      $ENV{'user.error.msg'}=
+        $r->uri.":opa:0:0:Cannot modify spreadsheet";
+      return HTTP_NOT_ACCEPTABLE; 
+  }
     return OK;
 }