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30 lines
885 B
C++
30 lines
885 B
C++
#ifndef QPDF_OFFSETINPUTSOURCE_HH
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#define QPDF_OFFSETINPUTSOURCE_HH
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// This class implements an InputSource that proxies for an underlying input source but offset a
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// specific number of bytes.
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#include <qpdf/InputSource.hh>
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class OffsetInputSource: public InputSource
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{
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public:
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OffsetInputSource(std::shared_ptr<InputSource>, qpdf_offset_t global_offset);
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~OffsetInputSource() override = default;
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qpdf_offset_t findAndSkipNextEOL() override;
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std::string const& getName() const override;
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qpdf_offset_t tell() override;
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void seek(qpdf_offset_t offset, int whence) override;
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void rewind() override;
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size_t read(char* buffer, size_t length) override;
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void unreadCh(char ch) override;
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private:
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std::shared_ptr<InputSource> proxied;
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qpdf_offset_t global_offset;
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qpdf_offset_t max_safe_offset;
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};
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#endif // QPDF_OFFSETINPUTSOURCE_HH
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