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 2017-08-11 Jay Berkenbilt <ejb@ql.org> 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 * Handle encrypted files whose encryption parameters are too 7 * Handle encrypted files whose encryption parameters are too
4 short. Fixes #96. 8 short. Fixes #96.
5 9
libqpdf/QPDFWriter.cc
  View file @36b3fe5
@@ -1587,18 +1587,16 @@ QPDFWriter::unparseObject(QPDFObjectHandle object, int level, @@ -1587,18 +1587,16 @@ QPDFWriter::unparseObject(QPDFObjectHandle object, int level,
1587 char last_char = this->pipeline->getLastChar(); 1587 char last_char = this->pipeline->getLastChar();
1588 popPipelineStack(); 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 writeString("endstream"); 1600 writeString("endstream");
1603 } 1601 }
1604 else if (object.isString()) 1602 else if (object.isString())
manual/qpdf-manual.xml
  View file @36b3fe5
@@ -932,6 +932,21 @@ outfile.pdf&lt;/option&gt; @@ -932,6 +932,21 @@ outfile.pdf&lt;/option&gt;
932 </listitem> 932 </listitem>
933 </varlistentry> 933 </varlistentry>
934 <varlistentry> 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 <term><option>--qdf</option></term> 950 <term><option>--qdf</option></term>
936 <listitem> 951 <listitem>
937 <para> 952 <para>
qpdf/qtest/qpdf.test
  View file @36b3fe5
@@ -234,7 +234,7 @@ foreach my $d (@bug_tests) @@ -234,7 +234,7 @@ foreach my $d (@bug_tests)
234 show_ntests(); 234 show_ntests();
235 # ---------- 235 # ----------
236 $td->notify("--- Miscellaneous Tests ---"); 236 $td->notify("--- Miscellaneous Tests ---");
237 -$n_tests += 88; 237 +$n_tests += 86;
238 238
239 $td->runtest("qpdf version", 239 $td->runtest("qpdf version",
240 {$td->COMMAND => "qpdf --version"}, 240 {$td->COMMAND => "qpdf --version"},
@@ -623,16 +623,6 @@ $td-&gt;runtest(&quot;split content stream errors&quot;, @@ -623,16 +623,6 @@ $td-&gt;runtest(&quot;split content stream errors&quot;,
623 $td->EXIT_STATUS => 3}, 623 $td->EXIT_STATUS => 3},
624 $td->NORMALIZE_NEWLINES); 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 # Demonstrate show-xref after check and not after check to illustrate 626 # Demonstrate show-xref after check and not after check to illustrate
637 # that it can dump the real xref or the recovered xref. 627 # that it can dump the real xref or the recovered xref.
638 $td->runtest("dump bad xref", 628 $td->runtest("dump bad xref",
@@ -690,6 +680,32 @@ $td-&gt;runtest(&quot;short /O or /U&quot;, @@ -690,6 +680,32 @@ $td-&gt;runtest(&quot;short /O or /U&quot;,
690 680
691 show_ntests(); 681 show_ntests();
692 # ---------- 682 # ----------
  683 +$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 $td->notify("--- Single Page ---"); 709 $td->notify("--- Single Page ---");
694 # sp = single-pages 710 # sp = single-pages
695 my @sp_cases = ( 711 my @sp_cases = (
qpdf/qtest/qpdf/newline-before-endstream-nl-qdf.pdf 0 → 100644
  View file @36b3fe5
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qpdf/qtest/qpdf/newline-before-endstream-nl.pdf 0 → 100644
  View file @36b3fe5
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  View file @36b3fe5
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qpdf/qtest/qpdf/newline-before-endstream.pdf deleted
View file @46611f0
No preview for this file type
qpdf/qtest/qpdf/streams-with-newlines.pdf 0 → 100644
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