Aren/NetBSD
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Allow short command names as long as they are not ambiguous.

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This commit is contained in:
christos 2005-02-03 15:15:48 +00:00
parent ecb75428c0
commit cff5b51c44
1 changed files with 17 additions and 9 deletions
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26
bin/mt/mt.c
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@ -1,4 +1,4 @@
/* $NetBSD: mt.c,v 1.38 2005/02/03 00:03:02 christos Exp $ */ /* $NetBSD: mt.c,v 1.39 2005/02/03 15:15:48 christos Exp $ */
/* /*
* Copyright (c) 1980, 1993 * Copyright (c) 1980, 1993
@ -39,7 +39,7 @@ __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
#if 0 #if 0
static char sccsid[] = "@(#)mt.c 8.2 (Berkeley) 6/6/93"; static char sccsid[] = "@(#)mt.c 8.2 (Berkeley) 6/6/93";
#else #else
__RCSID("$NetBSD: mt.c,v 1.38 2005/02/03 00:03:02 christos Exp $"); __RCSID("$NetBSD: mt.c,v 1.39 2005/02/03 15:15:48 christos Exp $");
#endif #endif
#endif /* not lint */ #endif /* not lint */
@ -48,6 +48,7 @@ __RCSID("$NetBSD: mt.c,v 1.38 2005/02/03 00:03:02 christos Exp $");
* magnetic tape manipulation program * magnetic tape manipulation program
*/ */
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <sys/mtio.h> #include <sys/mtio.h>
#include <sys/stat.h> #include <sys/stat.h>
@ -111,13 +112,14 @@ int main(int, char *[]);
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
const struct commands *comp = (const struct commands *) NULL; const struct commands *cp, *comp;
struct mtget mt_status; struct mtget mt_status;
struct mtop mt_com; struct mtop mt_com;
int ch, mtfd, flags; int ch, mtfd, flags;
char *p; char *p;
const char *tape; const char *tape;
int count; int count;
size_t len;
setprogname(argv[0]); setprogname(argv[0]);
if ((tape = getenv("TAPE")) == NULL) if ((tape = getenv("TAPE")) == NULL)
@ -139,13 +141,19 @@ main(int argc, char *argv[])
if (argc < 1 || argc > 2) if (argc < 1 || argc > 2)
usage(); usage();
p = *argv++; len = strlen(p = *argv++);
for (comp = com;; comp++) { for (comp = NULL, cp = com; cp->c_name != NULL; cp++) {
if (comp->c_name == NULL) size_t clen = MIN(len, cp->c_namelen);
errx(1, "%s: unknown command", p); if (strncmp(p, cp->c_name, clen) == 0) {
if (strncmp(p, comp->c_name, comp->c_namelen) == 0) if (comp != NULL)
break; errx(1, "%s: Ambiguous command `%s' or `%s'?",
p, cp->c_name, comp->c_name);
else
comp = cp;
}
} }
if (comp == NULL)
errx(1, "%s: unknown command", p);
if (*argv) { if (*argv) {
count = strtol(*argv, &p, 10); count = strtol(*argv, &p, 10);