45 lines
964 B
C++
45 lines
964 B
C++
#ifndef RewindStorageObject_INCLUDED
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#define RewindStorageObject_INCLUDED 1
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#include "StorageManager.h"
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#include "Boolean.h"
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#include "StringOf.h"
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#ifdef SP_NAMESPACE
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namespace SP_NAMESPACE {
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#endif
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class Messenger;
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class SP_API RewindStorageObject : public StorageObject {
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public:
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RewindStorageObject(Boolean mayRewind, Boolean canSeek);
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protected:
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PackedBoolean mayRewind_;
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void saveBytes(const char *, size_t);
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Boolean readSaved(char *, size_t, size_t &);
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Boolean rewind(Messenger &);
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void willNotRewind();
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void unread(const char *s, size_t n);
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virtual Boolean seekToStart(Messenger &) = 0;
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private:
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PackedBoolean savingBytes_;
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PackedBoolean readingSaved_;
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PackedBoolean canSeek_;
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String<char> savedBytes_;
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size_t nBytesRead_;
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};
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inline
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void RewindStorageObject::saveBytes(const char *s, size_t n)
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{
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if (savingBytes_)
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savedBytes_.append(s, n);
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}
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#ifdef SP_NAMESPACE
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}
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#endif
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#endif /* not RewindStorageObject_INCLUDED */
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