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* Copyright (C) 2004 Thomas Glanzmann <>
* Copyright (C) 2004 Tobias Werth <>
* Copyright (C) 2004 Brian Fundakowski Feldman <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#ifndef _HCACHE_H_
#define _HCACHE_H_ 1
struct header_cache;
typedef struct header_cache header_cache_t;
typedef int (*hcache_namer_t)(const char* path, char* dest, size_t dlen);
header_cache_t *mutt_hcache_open(const char *path, const char *folder,
hcache_namer_t namer);
void mutt_hcache_close(header_cache_t *h);
HEADER *mutt_hcache_restore(const unsigned char *d, HEADER **oh);
void *mutt_hcache_fetch(header_cache_t *h, const char *filename, size_t (*keylen)(const char *fn));
void *mutt_hcache_fetch_raw (header_cache_t *h, const char *filename,
size_t (*keylen)(const char *fn));
/* uidvalidity is an IMAP-specific unsigned 32 bit number */
int mutt_hcache_store(header_cache_t *h, const char *filename, HEADER *header,
unsigned int uidvalidity, size_t (*keylen)(const char *fn));
int mutt_hcache_store_raw (header_cache_t *h, const char* filename, void* data,
size_t dlen, size_t(*keylen) (const char* fn));
int mutt_hcache_delete(header_cache_t *h, const char *filename, size_t (*keylen)(const char *fn));
const char *mutt_hcache_backend (void);
#endif /* _HCACHE_H_ */