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Diff for /loncom/interface/printout.pl between versions 1.99 and 1.100

version 1.99, 2006/06/06 11:04:18 version 1.100, 2006/06/12 11:21:07
Line 668  sub busy_wait_command { Line 668  sub busy_wait_command {
 #     the maximum number of pages.  #     the maximum number of pages.
 #     #   
 sub repaginate_postscript {  sub repaginate_postscript {
     # For now just strip out the STARTOFSTUDENTSTAMP  
     # ENDOFSTUDENTSTAMP markers in the postscript.      # We will try to do this in 2 passes through the postscript since
       # the postscript is potentially large, to do 2 passes, the first pass
       # must be able to calculate the total number of document pages so that
       # at the beginning of the second pass we already know how to replace
       #  %%Pages:
   
       #  Figure out
       #    1. Number of pages in the document
       #    2. Maximum number of pages in a student
       #    3. Number of pages in each student.
   
     my ($postscript_filename) = @_;      my ($postscript_filename) = @_;
     open(PSFILE, "<$postscript_filename");      open(PSFILE, "<$postscript_filename");
     my @psfilelines = <PSFILE>;      my $line;
       my $total_pages; # Total pages in document.
       my $seen_pages        = 0; # There are several %%Pages only the first is useful
       my $student_number    = 0; # Index of student we're working on.
       my @pages_in_student; # For each student his/her initial page count.
       my $max_pages = 0; # Pages in 'longest' student.
       while ($line = <PSFILE>) {
    my $page_number = 0;
   
    # Check for total pages (%%Pages:)
   
    if (($line =~ "^%%Pages:") && (!$seen_pages)) {
       my @pageinfo = split(/ /,$line);
       $total_pages = $pageinfo[1];
       $seen_pages  = 1;
    }
    #  Check for %%Page: n m  $page_number will be the
    #  biggest of these until we see an endofstudent.
    #  Note that minipages generate spurious %Page: 1 1's so
    #  we only are looking for the largest n (n is page number at the
    #  bottom of the page, m the page number within the document.
    #
    if ($line =~ "^%%Page:") {
       my @pageinfo = split(/ /, $line);
       if ($page_number < $pageinfo[1]) {
    $page_number = $pageinfo[1];
       }
    }
    #  ENDOFSTUDENTSTAMP - save the page_number, reset and, if necessary
    #                      udpate max_pages.
    #
    if ($line =~ "ENDOFSTUDENTSTAMP") {
       $pages_in_student[$student_number] = $page_number;
       $student_number++;
   
       if ($page_number > $max_pages) {
    $max_pages = $page_number;
       }
       $page_number = 0;
     
    }
   
   
       }
     close(PSFILE);      close(PSFILE);
     my $psbody = join('', @psfilelines);      
     $psbody =~ s/STARTOFSTUDENTSTAMP//g;      #   Figure out how many total pages we need to add and adjust the
     $psbody =~ s/ENDOFSTUDENTSTAMP//g;      #   $total_pages accordingly:
       #
       my $add_pages  = 0;
       for (my $i =0; $i < $student_number; $i++) {
    $add_pages += ($max_pages - $pages_in_student[$i]);
       }    
       #  If we don't need to add any pages, we're done!
       #  You  might think that we don't need to do anything if 
       #  there are no pages to add, however we still need to at least strip out
       #   the ENDOFSTUDENTSTAMP stamps...as they are not postscript comments!!
   
     open(PSFILE, ">$postscript_filename");    
     print PSFILE $psbody;      #  Now pass 2; we're going to write the new. ps file:
       #  -  Modify its first %%Pages: line so that it has the new correct number of
       #     pages
       #  -  For each student, insert as many blank pages as needed (and
       #     associated structured comments) to expand a  student out to
       #     max_pages pages.
       #  -  Remove the ENDOFSTUDENTSTAMP lines.
       #
   
       $total_pages += $add_pages;
       $student_number = 0;
    
      open(PSFILE, "<$postscript_filename");
       open(PSOFILE,">$postscript_filename"."repaginating"); # unique if original fname is.
       $seen_pages = 0; # Reset seen %%Pages flag...
       while ($line = <PSFILE>) {
    if (($line =~ "^%%Pages:") && (!$seen_pages)) {
       $line = "%%Pages: $total_pages\n";
       $seen_pages = 1;
    }
    if ($line =~ "ENDOFSTUDENTSTAMP") {
       $add_pages = ($max_pages - $pages_in_student[$student_number]);
       $line = "\n";
       my $last_student_page = $pages_in_student[$student_number];
       my $last_total_page   = $student_number*$max_pages + $last_student_page;
       while ($add_pages) {
    $line .= "%Page: $last_student_page $last_total_page\n";
    my $bop = $last_total_page-1;
    $line .= "TeXDict begin $last_student_page $bop bop eop end\n";
    $last_student_page++;
    $last_total_page++;
    $add_pages--;
       }
       $student_number++;
    }
    print PSOFILE $line;
       }
       close PSOFILE;
     close PSFILE;      close PSFILE;
   
       rename($postscript_filename."repaginating", $postscript_filename);
   
 }  }
   
Removed from v.1.99  
changed lines
  Added in v.1.100

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