90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
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// Copyright (c) 1994, 1995 James Clark
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// See the file COPYING for copying permission.
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#ifndef StorageManager_INCLUDED
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#define StorageManager_INCLUDED 1
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include "StringC.h"
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#include "types.h"
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#include "CharsetInfo.h"
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#include <stddef.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 StorageManager;
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class CharsetInfo;
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class Messenger;
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class InputCodingSystem;
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class SP_API StorageObject {
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public:
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StorageObject();
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virtual ~StorageObject();
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virtual Boolean read(char *buf, size_t bufSize, Messenger &,
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size_t &nread) = 0;
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virtual Boolean rewind(Messenger &) = 0;
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virtual void willNotRewind();
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virtual size_t getBlockSize() const;
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private:
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StorageObject(const StorageObject &); // undefined
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void operator=(const StorageObject &); // undefined
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};
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class SP_API StorageManager {
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public:
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StorageManager();
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virtual StorageObject *makeStorageObject(const StringC &specId,
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const StringC &baseId,
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Boolean search,
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Boolean mayRewind,
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Messenger &mgr,
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StringC &actualId) = 0;
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virtual const char *type() const = 0;
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virtual Boolean inheritable() const;
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virtual Boolean transformNeutral(StringC &, Boolean fold, Messenger &) const;
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// Resolve a possibly relative ID by examining the base and specified IDs.
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// Put the resolved ID in specID.
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// Return 0 if it cannot be resolved yet becase the specified ID is relative
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// and physical searching is required to resolve it and search is true;
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// in this case the base will be passed to makeStorageObject.
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// Otherwise return 1; in this case the base will be discarded, and the
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// resolved ID will be passed to makeStorageObject.
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virtual Boolean resolveRelative(const StringC &base,
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StringC &specId,
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Boolean search) const;
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virtual Boolean guessIsId(const StringC &, const CharsetInfo &) const;
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virtual const InputCodingSystem *requiredCodingSystem() const;
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virtual Boolean requiresCr() const;
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virtual ~StorageManager();
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virtual const CharsetInfo *idCharset() const;
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virtual const StringC *reString() const;
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private:
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StorageManager(const StorageManager &); // undefined
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void operator=(const StorageManager &); // undefined
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};
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class SP_API IdStorageManager : public StorageManager {
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public:
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IdStorageManager(const CharsetInfo *idCharset);
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const CharsetInfo *idCharset() const;
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const StringC *reString() const;
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protected:
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StringC reString_;
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private:
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IdStorageManager(const IdStorageManager &); // undefined
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void operator=(const IdStorageManager &); // undefined
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const CharsetInfo *idCharset_;
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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 StorageManager_INCLUDED */
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