67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/* -----------------------------------------------------------------------------
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GSFramework
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Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
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----------------------------------------------------------------------------- */
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#ifndef __NIOALIAS__
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#define __NIOALIAS__
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#include <stdio.h>
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#include "nstring/nstring.h"
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#include "container/nmap.h"
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namespace GS {
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namespace IO {
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class Handle;
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/*!
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@short Alias proxy I/O.
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A simple proxy I/O to provide filename aliasing to another I/O system.
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@author Emmanuel Julien (ejulien@nworks.fr)
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*/
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class Alias : public Base
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{
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SharedPtr <Base> iofs;
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public:
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//----------------------------------------------------------------------
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Map <String, String> alias_map;
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String ResolveAlias(const char *path) const
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{
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Pair <String, String> *alias = alias_map.Get(path);
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return alias ? alias->value : path;
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}
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//----------------------------------------------------------------------
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virtual Handle *Open(const char *path, Mode mode = IORead)
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{ return iofs->Open(ResolveAlias(path), mode); }
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virtual void Close(Handle *h)
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{ iofs->Close(h); }
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virtual bool Delete(const char *path)
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{ return iofs->Delete(ResolveAlias(path)); }
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virtual size_t Tell(Handle *h)
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{ return iofs->Tell(h); }
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virtual size_t Seek(Handle *h, ptrdiff_t offset, SeekRef seek_ref = SeekCurrent)
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{ return iofs->Seek(h, offset, seek_ref); }
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virtual size_t Read(Handle *h, void *p, size_t size)
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{ return iofs->Read(h, p, size); }
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virtual size_t Write(Handle *h, const void *p, size_t size)
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{ return iofs->Write(h, p, size); }
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Alias(Base *io) : iofs(io) {}
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};
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} // IO
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} // GS
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#endif // __NIOALIAS__
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