diff options
Diffstat (limited to 'qpdf/fix-qdf')
| -rwxr-xr-x | qpdf/fix-qdf | 44 |
1 files changed, 34 insertions, 10 deletions
diff --git a/qpdf/fix-qdf b/qpdf/fix-qdf index b0e56e12..2892a462 100755 --- a/qpdf/fix-qdf +++ b/qpdf/fix-qdf @@ -53,6 +53,7 @@ my $stream_start = 0; my $stream_length = 0; my $xref_offset = 0; my $xref_f1_nbytes = 0; +my $xref_f2_nbytes = 0; my $xref_size = 0; my $cur_state = 0; @@ -122,11 +123,28 @@ while (defined($line = get_line())) $t >>= 8; ++$xref_f1_nbytes; } - my $esize = $xref_f1_nbytes + 2; + # Figure out how many bytes we need for ostream index. + # Make sure we get at least 1 byte even if there are no + # object streams. + my $max_objects = 1; + foreach my $e (@xref) + { + my ($type, $f1, $f2) = @$e; + if ((defined $f2) && ($f2 > $max_objects)) + { + $max_objects = $f2; + } + } + while ($max_objects) + { + $max_objects >>=8; + ++$xref_f2_nbytes; + } + my $esize = 1 + $xref_f1_nbytes + $xref_f2_nbytes; $xref_size = 1 + @xref; my $length = $xref_size * $esize; print " /Length $length\n"; - print " /W [ 1 $xref_f1_nbytes 1 ]\n"; + print " /W [ 1 $xref_f1_nbytes $xref_f2_nbytes ]\n"; $state = $st_in_xref_stream_dict; } } @@ -200,19 +218,25 @@ while (defined($line = get_line())) } if ($line =~ m/^stream\n/) { - my $pack = "(C C$xref_f1_nbytes C)"; + my $pack = "(C C$xref_f1_nbytes C$xref_f2_nbytes)"; print pack($pack, 0, 0, 0); foreach my $x (@xref) { my ($type, $f1, $f2) = @$x; $f2 = 0 unless defined $f2; - my @f1 = (); - for (my $i = 0; $i < $xref_f1_nbytes; ++$i) - { - unshift(@f1, $f1 & 0xff); - $f1 >>= 8; - } - print pack($pack, $type, @f1, $f2); + my @f1 = (); + my @f2 = (); + foreach my $d ([\@f1, $f1, $xref_f1_nbytes], + [\@f2, $f2, $xref_f2_nbytes]) + { + my ($fa, $f, $nbytes) = @$d; + for (my $i = 0; $i < $nbytes; ++$i) + { + unshift(@$fa, $f & 0xff); + $f >>= 8; + } + } + print pack($pack, $type, @f1, @f2); } print "\nendstream\nendobj\n\n"; print "startxref\n$xref_offset\n\%\%EOF\n"; |