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* Support reading multiple keys with the same name if '-D' is given, 

using db->seq() and match comparison rather than db->get().
* Deleting multiple keys of the same name appears to already work as-is
  with a single db->del() call; I had code to implement this if '-D'
  is given but it appears to be unnecessary.
* Cosmetic/KNF tweaks.
This commit is contained in:
lukem 2007-04-03 04:52:32 +00:00
parent f5a25c2db5
commit b234edd83d
1 changed files with 35 additions and 15 deletions
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50
usr.bin/db/db.c
View File

@ -1,7 +1,7 @@
/* $NetBSD: db.c,v 1.14 2005/06/20 02:53:38 lukem Exp $ */
/* $NetBSD: db.c,v 1.15 2007/04/03 04:52:32 lukem Exp $ */
/*-
* Copyright (c) 2002-2005 The NetBSD Foundation, Inc.
* Copyright (c) 2002-2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
@ -39,7 +39,7 @@
#include <sys/cdefs.h>
#ifndef lint
#ifdef __RCSID
__RCSID("$NetBSD: db.c,v 1.14 2005/06/20 02:53:38 lukem Exp $");
__RCSID("$NetBSD: db.c,v 1.15 2007/04/03 04:52:32 lukem Exp $");
#endif /* __RCSID */
#endif /* not lint */
@ -164,7 +164,7 @@ main(int argc, char *argv[])
case 'f':
infile = optarg;
break;
case 'i':
flags |= F_IGNORECASE;
break;
@ -380,7 +380,7 @@ db_print(DBT *key, DBT *val)
} else {
len = (int)MINUSNUL(val->size);
data = (char *)val->data;
}
}
printf("%.*s", len, data);
}
printf("\n");
@ -408,15 +408,14 @@ db_makekey(DBT *key, char *keystr, int downcase, int decode)
memset(key, 0, sizeof(*key));
if (decode) {
if ((klen = decode_data(keystr, &ks)) == -1)
errx(1, "Invalid escape sequence in `%s'",
keystr);
errx(1, "Invalid escape sequence in `%s'", keystr);
} else {
klen = strlen(keystr);
ks = keystr;
}
key->data = ks;
key->size = klen + (flags & F_NO_NUL ? 0 : 1);
if (downcase && flags & F_IGNORECASE) {
if (downcase && (flags & F_IGNORECASE)) {
for (p = ks; *p; p++)
if (isupper((int)*p))
*p = tolower((int)*p);
@ -440,8 +439,7 @@ db_del(char *keystr)
printf("Deleted key `%s'\n", keystr);
break;
case 1:
warnx("Key `%s' does not exist", keystr);
r = 1;
warnx("Unknown key `%s'", keystr);
break;
}
if (flags & F_DECODE_KEY)
@ -453,26 +451,49 @@ int
db_get(char *keystr)
{
DBT key, val;
int r = 0;
char *wantkey;
int r, found;
u_int seqflags;
db_makekey(&key, keystr, 1, (flags & F_DECODE_KEY ? 1 : 0));
switch (db->get(db, &key, &val, 0)) {
wantkey = strdup(key.data);
if (wantkey == NULL)
err(1, "Cannot allocate key buffer");
found = 0;
seqflags = R_CURSOR;
while ((r = db->seq(db, &key, &val, seqflags)) == 0) {
if (strcmp((char *)key.data, wantkey) != 0) {
r = 1;
break;
}
seqflags = R_NEXT;
found++;
db_print(&key, &val);
if (! (flags & F_DUPLICATES))
break;
}
switch (r) {
case -1:
warn("Error reading key `%s'", keystr);
r = 1;
break;
case 0:
db_print(&key, &val);
break;
case 1:
if (found) {
r = 0;
break;
}
if (! (flags & F_QUIET)) {
warnx("Unknown key `%s'", keystr);
r = 1;
}
break;
}
if (flags & F_DECODE_KEY)
free(key.data);
free(wantkey);
return (r);
}
@ -497,7 +518,6 @@ db_put(char *keystr, char *valstr)
case 1:
if (! (flags & F_QUIET))
warnx("Key `%s' already exists", keystr);
r = 1;
break;
}
if (flags & F_DECODE_KEY)