Import BSDDB 4.7.25 (as of svn r89086)

2017-09-04 13:40:25 -05:00
parent 4b29e0458f
commit 8f590873d0
4781 changed files with 2241032 additions and 6 deletions
--- a/examples_c/ex_access.c
+++ b/examples_c/ex_access.c
@@ -0,0 +1,161 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997,2008 Oracle.  All rights reserved.
+ *
+ * $Id: ex_access.c 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef _WIN32
+extern int getopt(int, char * const *, const char *);
+#else
+#include <unistd.h>
+#endif
+
+#include <db.h>
+
+#define	DATABASE	"access.db"
+int main __P((int, char *[]));
+int usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	extern int optind;
+	DB *dbp;
+	DBC *dbcp;
+	DBT key, data;
+	size_t len;
+	int ch, ret, rflag;
+	char *database, *p, *t, buf[1024], rbuf[1024];
+	const char *progname = "ex_access";		/* Program name. */
+
+	rflag = 0;
+	while ((ch = getopt(argc, argv, "r")) != EOF)
+		switch (ch) {
+		case 'r':
+			rflag = 1;
+			break;
+		case '?':
+		default:
+			return (usage());
+		}
+	argc -= optind;
+	argv += optind;
+
+	/* Accept optional database name. */
+	database = *argv == NULL ? DATABASE : argv[0];
+
+	/* Optionally discard the database. */
+	if (rflag)
+		(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 (EXIT_FAILURE);
+	}
+	dbp->set_errfile(dbp, stderr);
+	dbp->set_errpfx(dbp, progname);
+	if ((ret = dbp->set_pagesize(dbp, 1024)) != 0) {
+		dbp->err(dbp, ret, "set_pagesize");
+		goto err1;
+	}
+	if ((ret = dbp->set_cachesize(dbp, 0, 32 * 1024, 0)) != 0) {
+		dbp->err(dbp, ret, "set_cachesize");
+		goto err1;
+	}
+	if ((ret = dbp->open(dbp,
+	    NULL, database, NULL, DB_BTREE, DB_CREATE, 0664)) != 0) {
+		dbp->err(dbp, ret, "%s: open", database);
+		goto err1;
+	}
+
+	/*
+	 * Insert records into the database, where the key is the user
+	 * input and the data is the user input in reverse order.
+	 */
+	memset(&key, 0, sizeof(DBT));
+	memset(&data, 0, sizeof(DBT));
+	for (;;) {
+		printf("input> ");
+		fflush(stdout);
+		if (fgets(buf, sizeof(buf), stdin) == NULL)
+			break;
+		if (strcmp(buf, "exit\n") == 0 || strcmp(buf, "quit\n") == 0)
+			break;
+		if ((len = strlen(buf)) <= 1)
+			continue;
+		for (t = rbuf, p = buf + (len - 2); p >= buf;)
+			*t++ = *p--;
+		*t++ = '\0';
+
+		key.data = buf;
+		data.data = rbuf;
+		data.size = key.size = (u_int32_t)len - 1;
+
+		switch (ret =
+		    dbp->put(dbp, NULL, &key, &data, DB_NOOVERWRITE)) {
+		case 0:
+			break;
+		default:
+			dbp->err(dbp, ret, "DB->put");
+			if (ret != DB_KEYEXIST)
+				goto err1;
+			break;
+		}
+	}
+	printf("\n");
+
+	/* Acquire a cursor for the database. */
+	if ((ret = dbp->cursor(dbp, NULL, &dbcp, 0)) != 0) {
+		dbp->err(dbp, ret, "DB->cursor");
+		goto err1;
+	}
+
+	/* Initialize the key/data pair so the flags aren't set. */
+	memset(&key, 0, sizeof(key));
+	memset(&data, 0, sizeof(data));
+
+	/* Walk through the database and print out the key/data pairs. */
+	while ((ret = dbcp->get(dbcp, &key, &data, DB_NEXT)) == 0)
+		printf("%.*s : %.*s\n",
+		    (int)key.size, (char *)key.data,
+		    (int)data.size, (char *)data.data);
+	if (ret != DB_NOTFOUND) {
+		dbp->err(dbp, ret, "DBcursor->get");
+		goto err2;
+	}
+
+	/* Close everything down. */
+	if ((ret = dbcp->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 (EXIT_FAILURE);
+	}
+	return (EXIT_SUCCESS);
+
+err2:	(void)dbcp->close(dbcp);
+err1:	(void)dbp->close(dbp, 0);
+	return (EXIT_FAILURE);
+}
+
+int
+usage()
+{
+	(void)fprintf(stderr, "usage: ex_access [-r] [database]\n");
+	return (EXIT_FAILURE);
+}