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