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73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
// Copyright (c) 2005-2022 Jay Berkenbilt
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//
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// This file is part of qpdf.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Versions of qpdf prior to version 7 were released under the terms
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// of version 2.0 of the Artistic License. At your option, you may
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// continue to consider qpdf to be licensed under those terms. Please
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// see the manual for additional information.
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#ifndef PL_COUNT_HH
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#define PL_COUNT_HH
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// This pipeline is reusable; i.e., it is safe to call write() after
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// calling finish().
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#include <qpdf/Types.h>
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#include <qpdf/Pipeline.hh>
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class Pl_Count: public Pipeline
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{
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public:
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QPDF_DLL
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Pl_Count(char const* identifier, Pipeline* next);
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QPDF_DLL
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virtual ~Pl_Count();
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QPDF_DLL
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virtual void write(unsigned char*, size_t);
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QPDF_DLL
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virtual void finish();
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// Returns the number of bytes written
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QPDF_DLL
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qpdf_offset_t getCount() const;
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// Returns the last character written, or '\0' if no characters
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// have been written (in which case getCount() returns 0)
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QPDF_DLL
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unsigned char getLastChar() const;
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private:
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class Members
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{
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friend class Pl_Count;
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public:
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QPDF_DLL
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~Members();
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private:
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Members();
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Members(Members const&);
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// Must be qpdf_offset_t, not size_t, to handle writing more than
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// size_t can handle.
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qpdf_offset_t count;
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unsigned char last_char;
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};
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PointerHolder<Members> m;
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};
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#endif // PL_COUNT_HH
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