mirror of https://github.com/qpdf/qpdf.git
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
// Copyright (c) 2005-2024 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"); you may not use this file except
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// in compliance with the License. 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 distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under
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// the License.
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//
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// Versions of qpdf prior to version 7 were released under the terms of version 2.0 of the Artistic
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// License. At your option, you may continue to consider qpdf to be licensed under those terms.
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// Please 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 calling finish().
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#include <qpdf/Pipeline.hh>
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#include <qpdf/Types.h>
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class QPDF_DLL_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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~Pl_Count() override;
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QPDF_DLL
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void write(unsigned char const*, size_t) override;
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QPDF_DLL
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void finish() override;
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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 have been written (in which case
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// 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 QPDF_DLL_PRIVATE 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() = default;
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private:
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Members();
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Members(Members const&) = delete;
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// Must be qpdf_offset_t, not size_t, to handle writing more than 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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std::shared_ptr<Members> m;
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};
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#endif // PL_COUNT_HH
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