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diff --git a/usr.bin/bintrans/bintrans.1 b/usr.bin/bintrans/bintrans.1
--- a/usr.bin/bintrans/bintrans.1
+++ b/usr.bin/bintrans/bintrans.1
@@ -25,7 +25,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd January 23, 2024
+.Dd January 8, 2025
.Dt BINTRANS 1
.Os
.Sh NAME
@@ -230,7 +230,7 @@
is a quoted-printable converter
and accepts the following options:
.Bl -tag -width indent
-.It Fl u
+.It Fl d
Decode.
.It Fl o Ar output_file
Output to
diff --git a/usr.bin/bintrans/qp.c b/usr.bin/bintrans/qp.c
--- a/usr.bin/bintrans/qp.c
+++ b/usr.bin/bintrans/qp.c
@@ -26,6 +26,7 @@
*/
#include <ctype.h>
+#include <getopt.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
@@ -157,38 +158,44 @@
int
main_quotedprintable(int argc, char *argv[])
{
- int i;
+ int ch;
bool encode = true;
FILE *fp = stdin;
FILE *fpo = stdout;
- for (i = 1; i < argc; ++i) {
- if (argv[i][0] == '-') {
- switch (argv[i][1]) {
- case 'o':
- if (++i >= argc) {
- fprintf(stderr, "qp: -o requires a file name.\n");
- exit(EXIT_FAILURE);
- }
- fpo = fopen(argv[i], "w");
- if (fpo == NULL) {
- perror(argv[i]);
- exit(EXIT_FAILURE);
- }
- break;
- case 'u':
- encode = false;
- break;
- default:
- usage();
- exit(EXIT_FAILURE);
- }
- } else {
- fp = fopen(argv[i], "r");
- if (fp == NULL) {
- perror(argv[i]);
+ static const struct option opts[] =
+ {
+ { "decode", no_argument, NULL, 'd'},
+ { "output", required_argument, NULL, 'o'},
+ {NULL, no_argument, NULL, 0}
+ };
+
+ while ((ch = getopt_long(argc, argv, "do:u", opts, NULL)) != -1) {
+ switch(ch) {
+ case 'o':
+ fpo = fopen(optarg, "w");
+ if (fpo == NULL) {
+ perror(optarg);
exit(EXIT_FAILURE);
}
+ break;
+ case 'u':
+ /* FALLTHROUGH for backward compatibility */
+ case 'd':
+ encode = false;
+ break;
+ default:
+ usage();
+ exit(EXIT_FAILURE);
+ }
+ };
+ argc -= optind;
+ argv += optind;
+ if (argc > 0) {
+ fp = fopen(argv[0], "r");
+ if (fp == NULL) {
+ perror(argv[0]);
+ exit(EXIT_FAILURE);
}
}
qp(fp, fpo, encode);

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