OpenSystemsDevelopment / qpdf

Commit 36b3fe5af761b7032a506808cf6ce6d37c297bfc

Authored by Jay Berkenbilt
1 parent 46611f07

Fix --newline-before-endstream option (fixes #133) 

Add a newline unconditionally before endstream even if a newline was
already written as part of the stream data.
Inline Side-by-side
Showing 9 changed files with 720 additions and 23 deletions
ChangeLog
  View file @36b3fe5
1 1 2017-08-11 Jay Berkenbilt <ejb@ql.org>
2 2  
  3 + * Fix --newline-before-endstream to always add a newline before
  4 + endstream even if the last character was already a newline. This
  5 + is actually what's required by PDF/A. Fixes #133.
  6 +
3 7 * Handle encrypted files whose encryption parameters are too
4 8 short. Fixes #96.
5 9  
... ...
libqpdf/QPDFWriter.cc
  View file @36b3fe5
... ... @@ -1587,18 +1587,16 @@ QPDFWriter::unparseObject(QPDFObjectHandle object, int level,
1587 1587 char last_char = this->pipeline->getLastChar();
1588 1588 popPipelineStack();
1589 1589  
1590   - if (this->qdf_mode || this->newline_before_endstream)
1591   - {
1592   - if (last_char != '\n')
1593   - {
1594   - writeString("\n");
1595   - this->added_newline = true;
1596   - }
1597   - else
1598   - {
1599   - this->added_newline = false;
1600   - }
1601   - }
  1590 + if (this->newline_before_endstream ||
  1591 + (this->qdf_mode && (last_char != '\n')))
  1592 + {
  1593 + writeString("\n");
  1594 + this->added_newline = true;
  1595 + }
  1596 + else
  1597 + {
  1598 + this->added_newline = false;
  1599 + }
1602 1600 writeString("endstream");
1603 1601 }
1604 1602 else if (object.isString())
... ...
manual/qpdf-manual.xml
  View file @36b3fe5
... ... @@ -932,6 +932,21 @@ outfile.pdf&lt;/option&gt;
932 932 </listitem>
933 933 </varlistentry>
934 934 <varlistentry>
  935 + <term><option>--newline-before-endstream</option></term>
  936 + <listitem>
  937 + <para>
  938 + Tells qpdf to insert a newline before the
  939 + <literal>endstream</literal> keyword, not counted in the
  940 + length, after any stream content even if the last character of
  941 + the stream was a newline. This may result in two newlines in
  942 + some cases. This is a requirement of PDF/A. While qpdf doesn't
  943 + specifically know how to generate PDF/A-compliant PDFs, this
  944 + at least prevents it from removing compliance on already
  945 + compliant files.
  946 + </para>
  947 + </listitem>
  948 + </varlistentry>
  949 + <varlistentry>
935 950 <term><option>--qdf</option></term>
936 951 <listitem>
937 952 <para>
... ...
qpdf/qtest/qpdf.test
  View file @36b3fe5
... ... @@ -234,7 +234,7 @@ foreach my $d (@bug_tests)
234 234 show_ntests();
235 235 # ----------
236 236 $td->notify("--- Miscellaneous Tests ---");
237   -$n_tests += 88;
  237 +$n_tests += 86;
238 238  
239 239 $td->runtest("qpdf version",
240 240 {$td->COMMAND => "qpdf --version"},
... ... @@ -623,16 +623,6 @@ $td-&gt;runtest(&quot;split content stream errors&quot;,
623 623 $td->EXIT_STATUS => 3},
624 624 $td->NORMALIZE_NEWLINES);
625 625  
626   -$td->runtest("newline before endstream",
627   - {$td->COMMAND =>
628   - "qpdf --static-id --newline-before-endstream" .
629   - " minimal.pdf a.pdf"},
630   - {$td->STRING => "", $td->EXIT_STATUS => 0},
631   - $td->NORMALIZE_NEWLINES);
632   -$td->runtest("check output",
633   - {$td->FILE => "a.pdf"},
634   - {$td->FILE => "newline-before-endstream.pdf"});
635   -
636 626 # Demonstrate show-xref after check and not after check to illustrate
637 627 # that it can dump the real xref or the recovered xref.
638 628 $td->runtest("dump bad xref",
... ... @@ -690,6 +680,32 @@ $td-&gt;runtest(&quot;short /O or /U&quot;,
690 680  
691 681 show_ntests();
692 682 # ----------
  683 +$td->notify("--- Newline before endstream ---");
  684 +$n_tests += 8;
  685 +foreach my $d (
  686 + ['--qdf', 'qdf', 'qdf'],
  687 + ['--newline-before-endstream', 'newline', 'nl'],
  688 + ['--qdf --newline-before-endstream', 'newline and qdf', 'nl-qdf'],
  689 + )
  690 +{
  691 + my ($flags, $description, $suffix) = @$d;
  692 + $td->runtest("newline before endstream: $description",
  693 + {$td->COMMAND => "qpdf --static-id --stream-data=preserve" .
  694 + " $flags streams-with-newlines.pdf a.pdf"},
  695 + {$td->STRING => "", $td->EXIT_STATUS => 0},
  696 + $td->NORMALIZE_NEWLINES);
  697 + $td->runtest("check output",
  698 + {$td->FILE => "a.pdf"},
  699 + {$td->FILE => "newline-before-endstream-$suffix.pdf"});
  700 + if ($flags =~ /qdf/)
  701 + {
  702 + $td->runtest("fix-qdf",
  703 + {$td->COMMAND => "fix-qdf a.pdf"},
  704 + {$td->FILE => "a.pdf", $td->EXIT_STATUS => 0});
  705 + }
  706 +}
  707 +show_ntests();
  708 +# ----------
693 709 $td->notify("--- Single Page ---");
694 710 # sp = single-pages
695 711 my @sp_cases = (
... ...
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