62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/*
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* This file is a part of Pcompress, a chunked parallel multi-
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* algorithm lossless compression and decompression program.
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*
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* Copyright (C) 2012 Moinak Ghosh. All rights reserved.
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* Use is subject to license terms.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This program 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 GNU
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* Lesser General Public License for more details.
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*
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* moinakg@belenix.org, http://moinakg.wordpress.com/
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*/
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#ifndef _C_ONFIG_H
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#define _C_ONFIG_H
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#include <limits.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define DEFAULT_SIMILARITY_INTERVAL 10
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#define DEFAULT_CKSUM "SHA256"
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#define CONTAINER_ITEMS 2048
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#define MIN_CK 1
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#define MAX_CK 5
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// 8GB
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#define MIN_ARCHIVE_SZ (8589934592ULL)
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typedef struct {
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char rootdir[PATH_MAX+1];
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uint32_t chunk_sz; // Numeric ID: 1 - 4k ... 5 - 64k
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uint64_t archive_sz; // Total size of archive in bytes.
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int chunk_cksum_type; // Which digest to use for hash based chunk lookup.
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int similarity_interval; // Similarity based match intervals in %age.
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// The items below are computed given the above
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// components.
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uint32_t chunk_sz_bytes;
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uint32_t segment_sz; // Number of chunks
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uint32_t container_sz; // Number of segments
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int directory_fanout; // Number of subdirectories in a directory
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int directory_levels; // Levels of nested directories
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int num_containers; // Number of containers in a directory
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} archive_config_t;
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int read_config(char *configfile, archive_config_t *cfg);
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#ifdef __cplusplus
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}
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#endif
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#endif
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