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79f6b4823b
Have classes contain only a single private member of type PointerHolder<Members>. This makes it safe to change the structure of the Members class without breaking binary compatibility. Many of the classes already follow this pattern quite successfully. This brings in the rest of the class that are part of the public API.
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
// Copyright (c) 2005-2019 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 QPDFXREFENTRY_HH
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#define QPDFXREFENTRY_HH
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#include <qpdf/DLL.h>
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#include <qpdf/Types.h>
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class QPDFXRefEntry
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{
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public:
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// Type constants are from the PDF spec section
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// "Cross-Reference Streams":
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// 0 = free entry; not used
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// 1 = "uncompressed"; field 1 = offset
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// 2 = "compressed"; field 1 = object stream number, field 2 = index
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QPDF_DLL
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QPDFXRefEntry();
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QPDF_DLL
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QPDFXRefEntry(int type, qpdf_offset_t field1, int field2);
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QPDF_DLL
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int getType() const;
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QPDF_DLL
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qpdf_offset_t getOffset() const; // only for type 1
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QPDF_DLL
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int getObjStreamNumber() const; // only for type 2
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QPDF_DLL
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int getObjStreamIndex() const; // only for type 2
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private:
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// This class does not use the Members pattern to avoid a memory
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// allocation for every one of these. A lot of these get created.
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int type;
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qpdf_offset_t field1;
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int field2;
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};
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#endif // QPDFXREFENTRY_HH
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