diff options
Diffstat (limited to 'bdb/examples_c/ex_btrec.c')
| -rw-r--r-- | bdb/examples_c/ex_btrec.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/bdb/examples_c/ex_btrec.c b/bdb/examples_c/ex_btrec.c deleted file mode 100644 index 8e4aa3901d1..00000000000 --- a/bdb/examples_c/ex_btrec.c +++ /dev/null @@ -1,203 +0,0 @@ -/*- - * See the file LICENSE for redistribution information. - * - * Copyright (c) 1997-2002 - * Sleepycat Software. All rights reserved. - * - * $Id: ex_btrec.c,v 11.18 2002/01/23 15:33:18 bostic Exp $ - */ - -#include <sys/types.h> - -#include <errno.h> -#include <stdlib.h> -#include <string.h> - -#include <db.h> - -#define DATABASE "access.db" -#define WORDLIST "../test/wordlist" -int main __P((void)); - -int ex_btrec __P((void)); -void show __P((const char *, DBT *, DBT *)); - -int -main() -{ - return (ex_btrec() == 1 ? EXIT_FAILURE : EXIT_SUCCESS); -} - -int -ex_btrec() -{ - DB *dbp; - DBC *dbcp; - DBT key, data; - DB_BTREE_STAT *statp; - FILE *fp; - db_recno_t recno; - u_int32_t len; - int cnt, ret; - char *p, *t, buf[1024], rbuf[1024]; - const char *progname = "ex_btrec"; /* Program name. */ - - /* Open the word database. */ - if ((fp = fopen(WORDLIST, "r")) == NULL) { - fprintf(stderr, "%s: open %s: %s\n", - progname, WORDLIST, db_strerror(errno)); - return (1); - } - - /* Remove the previous database. */ - (void)remove(DATABASE); - - /* Create and initialize database object, open the database. */ - if ((ret = db_create(&dbp, NULL, 0)) != 0) { - fprintf(stderr, - "%s: db_create: %s\n", progname, db_strerror(ret)); - return (1); - } - dbp->set_errfile(dbp, stderr); - dbp->set_errpfx(dbp, progname); /* 1K page sizes. */ - if ((ret = dbp->set_pagesize(dbp, 1024)) != 0) { - dbp->err(dbp, ret, "set_pagesize"); - return (1); - } /* Record numbers. */ - if ((ret = dbp->set_flags(dbp, DB_RECNUM)) != 0) { - dbp->err(dbp, ret, "set_flags: DB_RECNUM"); - return (1); - } - if ((ret = dbp->open(dbp, - NULL, DATABASE, NULL, DB_BTREE, DB_CREATE, 0664)) != 0) { - dbp->err(dbp, ret, "open: %s", DATABASE); - return (1); - } - - /* - * Insert records into the database, where the key is the word - * preceded by its record number, and the data is the same, but - * in reverse order. - */ - memset(&key, 0, sizeof(DBT)); - memset(&data, 0, sizeof(DBT)); - for (cnt = 1; cnt <= 1000; ++cnt) { - (void)sprintf(buf, "%04d_", cnt); - if (fgets(buf + 4, sizeof(buf) - 4, fp) == NULL) - break; - len = strlen(buf); - for (t = rbuf, p = buf + (len - 2); p >= buf;) - *t++ = *p--; - *t++ = '\0'; - - key.data = buf; - data.data = rbuf; - data.size = key.size = len - 1; - - if ((ret = - dbp->put(dbp, NULL, &key, &data, DB_NOOVERWRITE)) != 0) { - dbp->err(dbp, ret, "DB->put"); - if (ret != DB_KEYEXIST) - goto err1; - } - } - - /* Close the word database. */ - (void)fclose(fp); - - /* Print out the number of records in the database. */ - if ((ret = dbp->stat(dbp, &statp, 0)) != 0) { - dbp->err(dbp, ret, "DB->stat"); - goto err1; - } - printf("%s: database contains %lu records\n", - progname, (u_long)statp->bt_ndata); - free(statp); - - /* Acquire a cursor for the database. */ - if ((ret = dbp->cursor(dbp, NULL, &dbcp, 0)) != 0) { - dbp->err(dbp, ret, "DB->cursor"); - goto err1; - } - - /* - * Prompt the user for a record number, then retrieve and display - * that record. - */ - for (;;) { - /* Get a record number. */ - printf("recno #> "); - fflush(stdout); - if (fgets(buf, sizeof(buf), stdin) == NULL) - break; - recno = atoi(buf); - - /* - * Reset the key each time, the dbp->c_get() routine returns - * the key and data pair, not just the key! - */ - key.data = &recno; - key.size = sizeof(recno); - if ((ret = dbcp->c_get(dbcp, &key, &data, DB_SET_RECNO)) != 0) - goto get_err; - - /* Display the key and data. */ - show("k/d\t", &key, &data); - - /* Move the cursor a record forward. */ - if ((ret = dbcp->c_get(dbcp, &key, &data, DB_NEXT)) != 0) - goto get_err; - - /* Display the key and data. */ - show("next\t", &key, &data); - - /* - * Retrieve the record number for the following record into - * local memory. - */ - data.data = &recno; - data.size = sizeof(recno); - data.ulen = sizeof(recno); - data.flags |= DB_DBT_USERMEM; - if ((ret = dbcp->c_get(dbcp, &key, &data, DB_GET_RECNO)) != 0) { -get_err: dbp->err(dbp, ret, "DBcursor->get"); - if (ret != DB_NOTFOUND && ret != DB_KEYEMPTY) - goto err2; - } else - printf("retrieved recno: %lu\n", (u_long)recno); - - /* Reset the data DBT. */ - memset(&data, 0, sizeof(data)); - } - - if ((ret = dbcp->c_close(dbcp)) != 0) { - dbp->err(dbp, ret, "DBcursor->close"); - goto err1; - } - if ((ret = dbp->close(dbp, 0)) != 0) { - fprintf(stderr, - "%s: DB->close: %s\n", progname, db_strerror(ret)); - return (1); - } - - return (0); - -err2: (void)dbcp->c_close(dbcp); -err1: (void)dbp->close(dbp, 0); - return (ret); - -} - -/* - * show -- - * Display a key/data pair. - */ -void -show(msg, key, data) - const char *msg; - DBT *key, *data; -{ - printf("%s%.*s : %.*s\n", msg, - (int)key->size, (char *)key->data, - (int)data->size, (char *)data->data); -} |