--- loncom/interface/printout.pl 2006/06/12 18:05:02 1.101 +++ loncom/interface/printout.pl 2006/06/19 21:40:29 1.102 @@ -476,8 +476,27 @@ foreach $texfile (@texfile) { "for $status_statement now Converting to PS", \%prog_state,$new_name_file); if (-e $new_name_file) { - &repaginate_postscript($new_name_file); - print "

PDF output file (see link below)

\n"; + my $latex_file = $name_file; + $latex_file =~ s/\.dvi/\.tex/; + &repaginate($new_name_file, $latex_file, $numberofcolumns); + # + # Now have to re-latex, re dvips again to + # get the repaginated postscript. + # + &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null", + "for $status_statement first latex to repaginate", + \%prog_state, $name_file); + &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null", + "for $status_statement second latex to repaginate", + \%prog_state, $name_file); + &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null", + "for $status_statement third latex to repaginate", + \%prog_state, $name_file); + &busy_wait_command("$comma $name_file 1>dev/null 2>/dev/null", + "for $status_statement dvips to repaginate", + \%prog_state, $new_name_file); + + print "\n

PDF output file (see link below)

\n"; $new_name_file =~ m/^(.*)\./; my $ps_file = my $tempo_file = $1.'temporar.ps'; my $pdf_file = $1.'.pdf'; @@ -551,7 +570,21 @@ foreach $texfile (@texfile) { "for $status_statement now Converting to PS", \%prog_state,$new_name_file); if (-e $new_name_file) { - &repaginate_postscript($new_name_file); + my $latex_file = $name_file; + $latex_file =~ s/\.dvi/\.tex/; + &repaginate($new_name_file, $latex_file, $numberofcolumns); + &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null", + "for $status_statement first latex to repaginate", + \%prog_state, $name_file); + &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null", + "for $status_statement second latex to repaginate", + \%prog_state, $name_file); + &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null", + "for $status_statement third latex to repaginate", + \%prog_state, $name_file); + &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null", + "for $status_statement dvips to repaginate", + \%prog_state, $new_name_file); print "
"; $new_name_file =~ m/^(.*)\./; my $ps_file = my $tempo_file = $1.'temporar.ps'; @@ -632,6 +665,7 @@ if ($number_of_files>1) { if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); } print(&Apache::loncommon::end_page()); my $done; + sub REAPER { $done=1; } @@ -663,13 +697,16 @@ sub busy_wait_command { } print("

End

"); -# Repagninate a postscript file. +# Repagninate # What we need to do: # - Count the number of pages in each student. -# - Add pages between each student so that each student's output is -# the maximum number of pages. -# -sub repaginate_postscript { +# - Rewrite the latex file replacing the \specials that +# mark the end of student with an appropriate number of newlines. +# parameters: +# psfile - Postscript filename +# latexfile - LaTeX filename +# columns - number of columns. +sub repaginate { # 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 @@ -682,7 +719,7 @@ sub repaginate_postscript { # 2. Maximum number of pages in a student # 3. Number of pages in each student. - my ($postscript_filename) = @_; + my ($postscript_filename, $latex_filename, $num_columns) = @_; open(PSFILE, "<$postscript_filename"); my $line; my $total_pages; # Total pages in document. @@ -690,8 +727,8 @@ sub repaginate_postscript { 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. + my $page_number = 0; while ($line = ) { - my $page_number = 0; # Check for total pages (%%Pages:) @@ -706,6 +743,7 @@ sub repaginate_postscript { # we only are looking for the largest n (n is page number at the # bottom of the page, m the page number within the document. # + if ($line =~ /^%%Page:/) { my @pageinfo = split(/ /, $line); if ($page_number < $pageinfo[1]) { @@ -729,61 +767,49 @@ sub repaginate_postscript { } close(PSFILE); - - # Figure out how many total pages we need to add and adjust the - # $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!! - - - # 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 = ) { - if (($line =~ /^%%Pages:/) && (!$seen_pages)) { - $line = "%%Pages: $total_pages\n"; - $seen_pages = 1; + + # If 2 columns, max_pages must go to an even number of columns: + + if ($num_columns == 2) { + if ($max_pages % 2) { + $max_pages++; } - if ($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--; + } + + # Now rewrite the LaTex file, substituting our \special + # with an appropriate number of \newpage directives. + + my $outfilename = $latex_filename."temp"; + + open(LATEXIN, "<$latex_filename"); + open(LATEXOUT, ">$outfilename"); + + + $student_number = 0; # first student... + + while (my $line = ) { + if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") { + # only end of student stamp if next line is ENDOFSTUDENTSTAMP: + + + # End of student replace with 0 or more newpages. + + my $addlines = $max_pages - $pages_in_student[$student_number]; + while($addlines) { + print LATEXOUT '\newpage'; + $addlines--; } + $student_number++; + + } else { + print LATEXOUT $line; } - print PSOFILE ($line); } - close(PSOFILE); - close(PSFILE); - rename($postscript_filename."repaginating", $postscript_filename); + close(LATEXIN); + close(LATEXOUT); + rename($outfilename, $latex_filename); }