/* zoneinfo_db.h -- zoneinfo DB routines
*
* Copyright (c) 1994-2013 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifndef ZONEINFO_DB_H
#define ZONEINFO_DB_H
#include <time.h>
#include "annotate.h" /* for strlist functionality */
/* name of the zoneinfo directory */
#define FNAME_ZONEINFODIR "/zoneinfo"
/* name of the NIST leap seconds file (provided with IANA tzdata) */
#define FNAME_LEAPSECFILE "/leap-seconds.list"
/* name of the world shape file (http://efele.net/maps/tz/world/) */
#define FNAME_WORLD_SHAPEFILE "/tz_world.shp"
/* name of the antarctica shape file (http://efele.net/maps/tz/world/) */
#define FNAME_AQ_SHAPEFILE "/tz_antarctica.shp"
/* offset between NIST and UNIX epochs (in seconds) */
#define NIST_EPOCH_OFFSET 2208988800U
/* name of the zoneinfo database */
#define FNAME_ZONEINFODB "/zoneinfo.db"
#define ZONEINFO_VERSION 1
#define INFO_TZID ".info"
#define zoneinfo_lookup_info(zi) zoneinfo_lookup(INFO_TZID, zi)
#define LEAP_TZID ".leap"
#define zoneinfo_lookup_leap(zi) zoneinfo_lookup(LEAP_TZID, zi)
struct zoneinfo {
unsigned type;
time_t dtstamp;
struct strlist *data;
};
/* zoneinfo record types */
enum {
ZI_ZONE = 0,
ZI_LINK,
ZI_INFO,
ZI_LEAP
};
/* open the zoneinfo db */
extern int zoneinfo_open(const char *name);
/* lookup a single zoneinfo entry and return result, or error if it
doesn't exist or doesn't have the fields we need */
extern int zoneinfo_lookup(const char *tzid, struct zoneinfo *zi);
/* store a zoneinfo entry */
extern int zoneinfo_store(const char *tzid, struct zoneinfo *zi,
struct txn **tid);
/* process all zoneinfo entries (optionally matching 'find') */
extern int zoneinfo_find(const char *find, int tzid_only, time_t changedsince,
int (*proc)(const char *tzid, int tzidlen,
struct zoneinfo *zi, void *rock),
void *rock);
/* close the database (optionally committing txn) */
extern void zoneinfo_close(struct txn *tid);
/* done with database stuff */
extern void zoneinfo_done(void);
#endif /* ZONEINFO_DB_H */