mirror of
https://github.com/qpdf/qpdf.git
synced 2024-05-29 16:30:53 +00:00
Bug fix: avoid extraneous pipeline finish calls with multiple contents
Avoid calling finish() multiple times on the pipeline passed to pipeContentStreams. This commit also fixes a bug in which qpdf was not exiting with the proper exit status if warnings found while splitting pages; this was exposed by a test case that changed.
This commit is contained in:
Jay Berkenbilt
parent
a139d2b36d
commit
bedf35d6a5
17
TODO
17
TODO
|
|
@ -16,23 +16,6 @@ Candidates for upcoming release
|
|||
definition of an object without breaking compatibility
|
||||
* See if the objects part can be sorted by object number
|
||||
|
||||
* QPDFObjectHandle::pipeContentStreams calls finish() after each
|
||||
stream. In some code paths, Pl_Concatenate is used, which suppresses
|
||||
that, but in other code paths, it's not used, and the library relies
|
||||
on the behavior of finish() being called. Then there's the issue of
|
||||
nested Pl_Concatenate pipelines -- calling manualFinish() on the top
|
||||
one doesn't call manualFinish() on the lower ones, and there are no
|
||||
exposed methods that allow us to apply things down the pipeline
|
||||
stack, so it's hard to fix this without changing the API (at least
|
||||
making Pipeline::getNext() public, which may be undesirable). To see
|
||||
this problem in action, stick a Pl_Concatenate in front of the
|
||||
pipeline in pipeContentStreams and observe the test failure. One
|
||||
solution might be to add an additional argument indicating whether
|
||||
or not to delay calling finish() until the end. See comments on
|
||||
QPDFPageObjectHelper::filterPageContents,
|
||||
QPDFObjectHandle::filterPageContents, and
|
||||
QPDFObjectHandle::pipeContentStreams
|
||||
|
||||
* Remember to check work `qpdf` project for private issues
|
||||
* file with very slow page extraction
|
||||
* big page even with --remove-unreferenced-resources=yes, even with --empty
|
||||
|
|
|
|||
|
|
@ -199,12 +199,7 @@ class QPDFPageObjectHelper: public QPDFObjectHelper
|
|||
|
||||
// Pipe a page's contents through the given pipeline. This method
|
||||
// works whether the contents are a single stream or an array of
|
||||
// streams. Call on a page object. Please note that if there is an
|
||||
// array of content streams, p->finish() is called after each
|
||||
// stream. If you pass a pipeline that doesn't allow write() to be
|
||||
// called after finish(), you can wrap it in an instance of
|
||||
// Pl_Concatenate and then call manualFinish() on the
|
||||
// Pl_Concatenate pipeline at the end.
|
||||
// streams.
|
||||
QPDF_DLL
|
||||
void pipePageContents(Pipeline* p);
|
||||
|
||||
|
|
|
|||
|
|
@ -14,7 +14,6 @@
|
|||
#include <qpdf/QPDF_Stream.hh>
|
||||
#include <qpdf/QPDF_Reserved.hh>
|
||||
#include <qpdf/Pl_Buffer.hh>
|
||||
#include <qpdf/Pl_Concatenate.hh>
|
||||
#include <qpdf/Pl_QPDFTokenizer.hh>
|
||||
#include <qpdf/BufferInputSource.hh>
|
||||
#include <qpdf/QPDFExc.hh>
|
||||
|
|
@ -90,13 +89,11 @@ void
|
|||
CoalesceProvider::provideStreamData(int, int, Pipeline* p)
|
||||
{
|
||||
QTC::TC("qpdf", "QPDFObjectHandle coalesce provide stream data");
|
||||
Pl_Concatenate concat("concatenate", p);
|
||||
std::string description = "page object " +
|
||||
QUtil::int_to_string(containing_page.getObjectID()) + " " +
|
||||
QUtil::int_to_string(containing_page.getGeneration());
|
||||
std::string all_description;
|
||||
old_contents.pipeContentStreams(&concat, description, all_description);
|
||||
concat.manualFinish();
|
||||
old_contents.pipeContentStreams(p, description, all_description);
|
||||
}
|
||||
|
||||
void
|
||||
|
|
@ -1630,14 +1627,15 @@ QPDFObjectHandle::pipeContentStreams(
|
|||
arrayOrStreamToStreamArray(
|
||||
description, all_description);
|
||||
bool need_newline = false;
|
||||
Pl_Buffer buf("concatenated content stream buffer");
|
||||
for (std::vector<QPDFObjectHandle>::iterator iter = streams.begin();
|
||||
iter != streams.end(); ++iter)
|
||||
{
|
||||
if (need_newline)
|
||||
{
|
||||
p->write(QUtil::unsigned_char_pointer("\n"), 1);
|
||||
buf.write(QUtil::unsigned_char_pointer("\n"), 1);
|
||||
}
|
||||
LastChar lc(p);
|
||||
LastChar lc(&buf);
|
||||
QPDFObjectHandle stream = *iter;
|
||||
std::string og =
|
||||
QUtil::int_to_string(stream.getObjectID()) + " " +
|
||||
|
|
@ -1655,6 +1653,9 @@ QPDFObjectHandle::pipeContentStreams(
|
|||
QTC::TC("qpdf", "QPDFObjectHandle need_newline",
|
||||
need_newline ? 0 : 1);
|
||||
}
|
||||
std::unique_ptr<Buffer> b(buf.getBuffer());
|
||||
p->write(b->getBuffer(), b->getSize());
|
||||
p->finish();
|
||||
}
|
||||
|
||||
void
|
||||
|
|
|
|||
11
qpdf/qpdf.cc
11
qpdf/qpdf.cc
|
|
@ -5569,7 +5569,7 @@ static void set_writer_options(QPDF& pdf, Options& o, QPDFWriter& w)
|
|||
}
|
||||
}
|
||||
|
||||
static void do_split_pages(QPDF& pdf, Options& o)
|
||||
static void do_split_pages(QPDF& pdf, Options& o, bool& warnings)
|
||||
{
|
||||
// Generate output file pattern
|
||||
std::string before;
|
||||
|
|
@ -5653,6 +5653,10 @@ static void do_split_pages(QPDF& pdf, Options& o)
|
|||
{
|
||||
std::cout << whoami << ": wrote file " << outfile << std::endl;
|
||||
}
|
||||
if (outpdf.anyWarnings())
|
||||
{
|
||||
warnings = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -5794,6 +5798,7 @@ int realmain(int argc, char* argv[])
|
|||
}
|
||||
handle_under_overlay(pdf, o);
|
||||
handle_transformations(pdf, o);
|
||||
bool split_warnings = false;
|
||||
|
||||
if ((o.outfilename == 0) && (! o.replace_input))
|
||||
{
|
||||
|
|
@ -5801,13 +5806,13 @@ int realmain(int argc, char* argv[])
|
|||
}
|
||||
else if (o.split_pages)
|
||||
{
|
||||
do_split_pages(pdf, o);
|
||||
do_split_pages(pdf, o, split_warnings);
|
||||
}
|
||||
else
|
||||
{
|
||||
write_outfile(pdf, o);
|
||||
}
|
||||
if (! pdf.getWarnings().empty())
|
||||
if ((! pdf.getWarnings().empty()) || split_warnings)
|
||||
{
|
||||
if (! o.suppress_warnings)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -6,4 +6,7 @@ WARNING: split-tokens.pdf (offset 823): Resulting stream data may be corrupted b
|
|||
WARNING: split-tokens.pdf (offset 962): content normalization encountered bad tokens
|
||||
WARNING: split-tokens.pdf (offset 962): normalized content ended with a bad token; you may be able to resolve this by coalescing content streams in combination with normalizing content. From the command line, specify --coalesce-contents
|
||||
WARNING: split-tokens.pdf (offset 962): Resulting stream data may be corrupted but is may still useful for manual inspection. For more information on this warning, search for content normalization in the manual.
|
||||
WARNING: split-tokens.pdf (offset 1338): content normalization encountered bad tokens
|
||||
WARNING: split-tokens.pdf (offset 1338): normalized content ended with a bad token; you may be able to resolve this by coalescing content streams in combination with normalizing content. From the command line, specify --coalesce-contents
|
||||
WARNING: split-tokens.pdf (offset 1338): Resulting stream data may be corrupted but is may still useful for manual inspection. For more information on this warning, search for content normalization in the manual.
|
||||
qpdf: operation succeeded with warnings; resulting file may have some problems
|
||||
|
|
|
|||
|
|
@ -135,12 +135,13 @@ stream
|
|||
QØTt*hÌUúãwÍÕÐ%¨)p–³"•DiRj¹–DYNUÓÙAv’Fà&
|
||||
<EFBFBD>ÍÔu#c•ÆW ô߉W“O
|
||||
EI
|
||||
/Z#00Z
|
||||
endstream
|
||||
endobj
|
||||
|
||||
%QDF: ignore_newline
|
||||
12 0 obj
|
||||
65
|
||||
72
|
||||
endobj
|
||||
|
||||
%% Original object ID: 12 0
|
||||
|
|
@ -214,18 +215,18 @@ xref
|
|||
0000001114 00000 n
|
||||
0000001445 00000 n
|
||||
0000001517 00000 n
|
||||
0000001661 00000 n
|
||||
0000001709 00000 n
|
||||
0000001856 00000 n
|
||||
0000001943 00000 n
|
||||
0000002044 00000 n
|
||||
0000002092 00000 n
|
||||
0000002239 00000 n
|
||||
0000001668 00000 n
|
||||
0000001716 00000 n
|
||||
0000001863 00000 n
|
||||
0000001950 00000 n
|
||||
0000002051 00000 n
|
||||
0000002099 00000 n
|
||||
0000002246 00000 n
|
||||
trailer <<
|
||||
/Root 1 0 R
|
||||
/Size 19
|
||||
/ID [<31415926535897932384626433832795><31415926535897932384626433832795>]
|
||||
>>
|
||||
startxref
|
||||
2275
|
||||
2282
|
||||
%%EOF
|
||||
|
|
|
|||
|
|
@ -7,4 +7,7 @@ WARNING: empty PDF: Resulting stream data may be corrupted but is may still usef
|
|||
WARNING: empty PDF: content normalization encountered bad tokens
|
||||
WARNING: empty PDF: normalized content ended with a bad token; you may be able to resolve this by coalescing content streams in combination with normalizing content. From the command line, specify --coalesce-contents
|
||||
WARNING: empty PDF: Resulting stream data may be corrupted but is may still useful for manual inspection. For more information on this warning, search for content normalization in the manual.
|
||||
WARNING: empty PDF: content normalization encountered bad tokens
|
||||
WARNING: empty PDF: normalized content ended with a bad token; you may be able to resolve this by coalescing content streams in combination with normalizing content. From the command line, specify --coalesce-contents
|
||||
WARNING: empty PDF: Resulting stream data may be corrupted but is may still useful for manual inspection. For more information on this warning, search for content normalization in the manual.
|
||||
qpdf: operation succeeded with warnings; resulting file may have some problems
|
||||
|
|
|
|||
|
|
@ -126,12 +126,13 @@ endobj
|
|||
stream
|
||||
QØTt*hÌUúãwÍÕÐ%¨)p–³"•DiRj¹–DYNUÓÙAv’Fà&
<0A>ÍÔu#c•ÆW ô߉W“O
|
||||
EI
|
||||
/Z#00Z
|
||||
endstream
|
||||
endobj
|
||||
|
||||
%QDF: ignore_newline
|
||||
12 0 obj
|
||||
66
|
||||
73
|
||||
endobj
|
||||
|
||||
13 0 obj
|
||||
|
|
@ -200,18 +201,18 @@ xref
|
|||
0000000924 00000 n
|
||||
0000001255 00000 n
|
||||
0000001299 00000 n
|
||||
0000001444 00000 n
|
||||
0000001464 00000 n
|
||||
0000001583 00000 n
|
||||
0000001642 00000 n
|
||||
0000001743 00000 n
|
||||
0000001763 00000 n
|
||||
0000001882 00000 n
|
||||
0000001451 00000 n
|
||||
0000001471 00000 n
|
||||
0000001590 00000 n
|
||||
0000001649 00000 n
|
||||
0000001750 00000 n
|
||||
0000001770 00000 n
|
||||
0000001889 00000 n
|
||||
trailer <<
|
||||
/Root 1 0 R
|
||||
/Size 19
|
||||
/ID [<fa46a90bcf56476b9904a2e7adb75024><6af379f20e8dcd4e724869daec3ba023>]
|
||||
>>
|
||||
startxref
|
||||
1918
|
||||
1925
|
||||
%%EOF
|
||||
|
|
|
|||
|
|
@ -135,12 +135,13 @@ stream
|
|||
QØTt*hÌUúãwÍÕÐ%¨)p–³"•DiRj¹–DYNUÓÙAv’Fà&
|
||||
<EFBFBD>ÍÔu#c•ÆW ô߉W“O
|
||||
EI
|
||||
/Z#00Z
|
||||
endstream
|
||||
endobj
|
||||
|
||||
%QDF: ignore_newline
|
||||
12 0 obj
|
||||
65
|
||||
72
|
||||
endobj
|
||||
|
||||
%% Original object ID: 13 0
|
||||
|
|
@ -214,18 +215,18 @@ xref
|
|||
0000001113 00000 n
|
||||
0000001444 00000 n
|
||||
0000001516 00000 n
|
||||
0000001660 00000 n
|
||||
0000001708 00000 n
|
||||
0000001855 00000 n
|
||||
0000001942 00000 n
|
||||
0000002043 00000 n
|
||||
0000002091 00000 n
|
||||
0000002238 00000 n
|
||||
0000001667 00000 n
|
||||
0000001715 00000 n
|
||||
0000001862 00000 n
|
||||
0000001949 00000 n
|
||||
0000002050 00000 n
|
||||
0000002098 00000 n
|
||||
0000002245 00000 n
|
||||
trailer <<
|
||||
/Root 1 0 R
|
||||
/Size 19
|
||||
/ID [<fa46a90bcf56476b9904a2e7adb75024><31415926535897932384626433832795>]
|
||||
>>
|
||||
startxref
|
||||
2274
|
||||
2281
|
||||
%%EOF
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user