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31 lines
896 B
C++
31 lines
896 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
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// input source but offset a specific number of bytes.
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#include <qpdf/InputSource.hh>
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#include <qpdf/PointerHolder.hh>
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class OffsetInputSource: public InputSource
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{
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public:
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OffsetInputSource(PointerHolder<InputSource>, qpdf_offset_t global_offset);
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virtual ~OffsetInputSource();
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virtual qpdf_offset_t findAndSkipNextEOL();
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virtual std::string const& getName() const;
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virtual qpdf_offset_t tell();
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virtual void seek(qpdf_offset_t offset, int whence);
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virtual void rewind();
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virtual size_t read(char* buffer, size_t length);
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virtual void unreadCh(char ch);
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private:
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PointerHolder<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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