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Usage: print base name of program.

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-A flag: respect the -a and -m flags.
	 imply the -c flag.

Requested in principle by: brian
This commit is contained in:
Greg Lehey 2007-04-10 07:22:30 +00:00
parent 5d2d083c92
commit 1b54381b5a
1 changed files with 47 additions and 20 deletions
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67
usr.bin/touch/touch.c
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@ -52,6 +52,7 @@ static const char sccsid[] = "@(#)touch.c 8.1 (Berkeley) 6/6/93";
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -76,7 +77,7 @@ main(int argc, char *argv[])
char *p;
char *myname;
myname = argv[0];
myname = basename(argv[0]);
Aflag = aflag = cflag = fflag = mflag = timeset = 0;
stat_f = stat;
utimes_f = utimes;
@ -120,30 +121,46 @@ main(int argc, char *argv[])
argc -= optind;
argv += optind;
/* -a and -m are default unless one of them or -A is set. */
if (aflag == 0 && mflag == 0 && Aflag == 0)
if (aflag == 0 && mflag == 0)
aflag = mflag = 1;
/*
* If no -r or -t flag, at least two operands, the first of which
* is an 8 or 10 digit number, use the obsolete time specification.
*/
if (!timeset && argc > 1) {
(void)strtol(argv[0], &p, 10);
len = p - argv[0];
if (*p == '\0' && (len == 8 || len == 10)) {
timeset = 1;
stime_arg2(*argv++, len == 10, tv);
if (timeset) {
if (Aflag) {
/*
* We're setting the time to an offset from a specified
* time. God knows why, but it means that we can set
* that time once and for all here.
*/
if (aflag)
tv[0].tv_sec += Aflag;
if (mflag)
tv[1].tv_sec += Aflag;
Aflag = 0; /* done our job */
}
}
/* Otherwise use the current time of day. */
if (!timeset)
} else {
/*
* If no -r or -t flag, at least two operands, the first of
* which is an 8 or 10 digit number, use the obsolete time
* specification, otherwise use the current time.
*/
if (argc > 1) {
strtol(argv[0], &p, 10);
len = p - argv[0];
if (*p == '\0' && (len == 8 || len == 10)) {
timeset = 1;
stime_arg2(*argv++, len == 10, tv);
}
}
/* Both times default to the same. */
tv[1] = tv[0];
}
if (*argv == NULL)
usage(myname);
if (Aflag)
cflag = 1;
for (rval = 0; *argv; ++argv) {
/* See if the file exists. */
if (stat_f(*argv, &sb) != 0) {
@ -164,14 +181,24 @@ main(int argc, char *argv[])
continue;
}
/* If -a or -m are not set, base time on current file time. */
if (!aflag)
TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atimespec);
if (!mflag)
TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec);
/*
* We're adjusting the times based on the file times, not a
* specified time (that gets handled above).
*/
if (Aflag) {
tv[0].tv_sec += Aflag;
tv[1].tv_sec += Aflag;
if (aflag) {
TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atimespec);
tv[0].tv_sec += Aflag;
}
if (mflag) {
TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec);
tv[1].tv_sec += Aflag;
}
}
/* Try utimes(2). */