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56 lines
1.9 KiB
56 lines
1.9 KiB
4 months ago
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#ifndef MTOOLS_DIRCACHE_H
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#define MTOOLS_DIRCACHE_H
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/* Copyright 1997,1999,2001-2003,2008,2009 Alain Knaff.
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* This file is part of mtools.
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*
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* Mtools is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Mtools is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Mtools. If not, see <http://www.gnu.org/licenses/>.
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*/
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typedef enum {
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DCET_FREE,
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DCET_USED,
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DCET_END
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} dirCacheEntryType_t;
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#define DC_BITMAP_SIZE 128
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typedef struct dirCacheEntry_t dirCacheEntry_t;
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typedef struct dirCache_t {
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struct dirCacheEntry_t **entries;
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unsigned int nr_entries;
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unsigned int nrHashed;
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unsigned int bm0[DC_BITMAP_SIZE];
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unsigned int bm1[DC_BITMAP_SIZE];
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unsigned int bm2[DC_BITMAP_SIZE];
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} dirCache_t;
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int isHashed(dirCache_t *cache, wchar_t *name);
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int growDirCache(dirCache_t *cache, unsigned int slot);
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dirCache_t *allocDirCache(Stream_t *Stream, unsigned int slot);
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dirCacheEntry_t *addUsedEntry(dirCache_t *Stream,
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unsigned int begin,
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unsigned int end,
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wchar_t *longName, wchar_t *shortName,
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struct directory *dir);
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void freeDirCache(Stream_t *Stream);
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dirCacheEntry_t *addFreeEntry(dirCache_t *Stream,
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unsigned int begin, unsigned int end);
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dirCacheEntry_t *addFreeEndEntry(dirCache_t *Stream,
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unsigned int begin, unsigned int end,
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int isAtEnd);
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dirCacheEntry_t *addEndEntry(dirCache_t *Stream, unsigned int pos);
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dirCacheEntry_t *lookupInDircache(dirCache_t *Stream, unsigned int pos);
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#endif
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