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Rusty Russell d24ddb0350 tdb2: add lib/tdb2 (from CCAN init-1161-g661d41f)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-06-20 11:18:35 +02:00

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#include <string.h>
#include <stdio.h>
/**
* tdb2 - [[WORK IN PROGRESS!]] The trivial (64bit transactional) database
*
* The tdb2 module provides an efficient keyword data mapping (usually
* within a file). It supports transactions, so the contents of the
* database is reliable even across crashes.
*
* Example:
* #include <ccan/tdb2/tdb2.h>
* #include <ccan/str/str.h>
* #include <err.h>
* #include <stdio.h>
*
* static void usage(const char *argv0)
* {
* errx(1, "Usage: %s fetch <dbfile> <key>\n"
* "OR %s store <dbfile> <key> <data>", argv0, argv0);
* }
*
* int main(int argc, char *argv[])
* {
* struct tdb_context *tdb;
* TDB_DATA key, value;
* enum TDB_ERROR error;
*
* if (argc < 4)
* usage(argv[0]);
*
* tdb = tdb_open(argv[2], TDB_DEFAULT, O_CREAT|O_RDWR,0600, NULL);
* if (!tdb)
* err(1, "Opening %s", argv[2]);
*
* key.dptr = (void *)argv[3];
* key.dsize = strlen(argv[3]);
*
* if (streq(argv[1], "fetch")) {
* if (argc != 4)
* usage(argv[0]);
* error = tdb_fetch(tdb, key, &value);
* if (error)
* errx(1, "fetch %s: %s",
* argv[3], tdb_errorstr(error));
* printf("%.*s\n", value.dsize, (char *)value.dptr);
* free(value.dptr);
* } else if (streq(argv[1], "store")) {
* if (argc != 5)
* usage(argv[0]);
* value.dptr = (void *)argv[4];
* value.dsize = strlen(argv[4]);
* error = tdb_store(tdb, key, value, 0);
* if (error)
* errx(1, "store %s: %s",
* argv[3], tdb_errorstr(error));
* } else
* usage(argv[0]);
*
* return 0;
* }
*
* Maintainer: Rusty Russell <rusty@rustcorp.com.au>
*
* Author: Rusty Russell
*
* License: LGPLv3 (or later)
*/
int main(int argc, char *argv[])
{
if (argc != 2)
return 1;
if (strcmp(argv[1], "depends") == 0) {
printf("ccan/asprintf\n");
printf("ccan/hash\n");
printf("ccan/likely\n");
printf("ccan/asearch\n");
printf("ccan/compiler\n");
printf("ccan/build_assert\n");
printf("ccan/ilog\n");
printf("ccan/failtest\n");
printf("ccan/tally\n");
printf("ccan/typesafe_cb\n");
printf("ccan/cast\n");
printf("ccan/endian\n");
return 0;
}
return 1;
}