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Simplify some conditionals.

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This commit is contained in:
Sheldon Hearn 2000-07-24 21:50:38 +00:00
parent dee82c612a
commit b86e825a0c
1 changed files with 10 additions and 12 deletions
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22
usr.bin/truncate/truncate.c
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@ -58,15 +58,15 @@ main(int argc, char **argv)
char *fname, *rname;
rsize = tsize = 0;
rname = NULL;
error = 0;
rname = NULL;
while ((ch = getopt(argc, argv, "cr:s:")) != -1)
switch (ch) {
case 'c':
no_create++;
no_create = 1;
break;
case 'r':
do_refer++;
do_refer = 1;
rname = optarg;
break;
case 's':
@ -74,8 +74,8 @@ main(int argc, char **argv)
errx(EXIT_FAILURE,
"invalid size argument `%s'", optarg);
if (*optarg == '+' || *optarg == '-')
do_relative++;
got_size++;
do_relative = 1;
got_size = 1;
break;
default:
usage();
@ -90,18 +90,16 @@ main(int argc, char **argv)
* do_relative implies got_size, do_relative and do_refer are
* also mutually exclusive. See usage() for allowed invocations.
*/
if (!(do_refer || got_size) || (do_refer && got_size) || argc < 1)
if (do_refer + got_size != 1 || argc < 1)
usage();
if (do_refer) {
if (stat(rname, &sb) == -1)
err(EXIT_FAILURE, "%s", rname);
tsize = sb.st_size;
} else if (got_size) {
if (do_relative)
rsize = sz;
else
tsize = sz;
}
} else if (do_relative)
rsize = sz;
else
tsize = sz;
if (no_create)
oflags = O_WRONLY;