diff options
| -rw-r--r-- | include/qpdf/Pl_Concatenate.hh | 32 | ||||
| -rw-r--r-- | libqpdf/Pl_Concatenate.cc | 28 | ||||
| -rw-r--r-- | libqpdf/build.mk | 1 |
3 files changed, 61 insertions, 0 deletions
diff --git a/include/qpdf/Pl_Concatenate.hh b/include/qpdf/Pl_Concatenate.hh new file mode 100644 index 00000000..1b0cb1a9 --- /dev/null +++ b/include/qpdf/Pl_Concatenate.hh @@ -0,0 +1,32 @@ +#ifndef __PL_CONCATENATE_HH__ +#define __PL_CONCATENATE_HH__ + +// This pipeline will drop all regular finished calls rather than +// passing them onto next. To finish downstream streams, call +// manualFinish. This makes it possible to pipe multiple streams +// (e.g. with QPDFObjectHandle::pipeStreamData) to a downstream like +// Pl_Flate that can't handle multiple calls to finish(). + +#include <qpdf/Pipeline.hh> + +class Pl_Concatenate: public Pipeline +{ + public: + QPDF_DLL + Pl_Concatenate(char const* identifier, Pipeline* next); + QPDF_DLL + virtual ~Pl_Concatenate(); + + QPDF_DLL + virtual void write(unsigned char* data, size_t len); + + QPDF_DLL + virtual void finish(); + + // At the very end, call manualFinish actually finish the rest of + // the pipeline. + QPDF_DLL + void manualFinish(); +}; + +#endif // __PL_CONCATENATE_HH__ diff --git a/libqpdf/Pl_Concatenate.cc b/libqpdf/Pl_Concatenate.cc new file mode 100644 index 00000000..8d48de60 --- /dev/null +++ b/libqpdf/Pl_Concatenate.cc @@ -0,0 +1,28 @@ +#include <qpdf/Pl_Concatenate.hh> + +Pl_Concatenate::Pl_Concatenate(char const* identifier, Pipeline* next) : + Pipeline(identifier, next) +{ +} + +Pl_Concatenate::~Pl_Concatenate() +{ +} + +void +Pl_Concatenate::write(unsigned char* data, size_t len) +{ + getNext()->write(data, len); +} + +void +Pl_Concatenate::finish() +{ +} + +void +Pl_Concatenate::manualFinish() +{ + getNext()->finish(); +} + diff --git a/libqpdf/build.mk b/libqpdf/build.mk index ebd534b3..7efbbd85 100644 --- a/libqpdf/build.mk +++ b/libqpdf/build.mk @@ -15,6 +15,7 @@ SRCS_libqpdf = \ libqpdf/Pl_ASCII85Decoder.cc \ libqpdf/Pl_ASCIIHexDecoder.cc \ libqpdf/Pl_Buffer.cc \ + libqpdf/Pl_Concatenate.cc \ libqpdf/Pl_Count.cc \ libqpdf/Pl_Discard.cc \ libqpdf/Pl_Flate.cc \ |