Use bb_getopt_ulflags, save 150 bytes.

diff --git a/archival/gunzip.c b/archival/gunzip.c
index f229ae5..367e047 100644 (file)
--- a/archival/gunzip.c
+++ b/archival/gunzip.c
@@ -71,37 +71,20 @@ static char *license_msg[] = {
 #include "busybox.h"
 #include "unarchive.h"
 
-const char gunzip_to_stdout = 1;
-const char gunzip_force = 2;
-const char gunzip_test = 4;
+#define GUNZIP_OPT_STDOUT      1
+#define GUNZIP_OPT_FORCE       2
+#define GUNZIP_OPT_TEST                4
+#define GUNZIP_OPT_DECOMPRESS  8
 
 extern int gunzip_main(int argc, char **argv)
 {
        char status = EXIT_SUCCESS;
-       char flags = 0;
-       int opt;
+       unsigned long opt;
 
+       opt = bb_getopt_ulflags(argc, argv, "cftd");
        /* if called as zcat */
        if (strcmp(bb_applet_name, "zcat") == 0) {
-               flags |= gunzip_to_stdout;
-       }
-
-       while ((opt = getopt(argc, argv, "ctfhd")) != -1) {
-               switch (opt) {
-               case 'c':
-                       flags |= gunzip_to_stdout;
-                       break;
-               case 'f':
-                       flags |= gunzip_force;
-                       break;
-               case 't':
-                       flags |= gunzip_test;
-                       break;
-               case 'd':               /* Used to convert gzip to gunzip. */
-                       break;
-               default:
-                       bb_show_usage();        /* exit's inside usage */
-               }
+               opt |= GUNZIP_OPT_STDOUT;
        }
 
        do {
@@ -116,7 +99,7 @@ extern int gunzip_main(int argc, char **argv)
 
                if (old_path == NULL || strcmp(old_path, "-") == 0) {
                        src_fd = fileno(stdin);
-                       flags |= gunzip_to_stdout;
+                       opt |= GUNZIP_OPT_STDOUT;
                } else {
                        src_fd = bb_xopen(old_path, O_RDONLY);
 
@@ -127,15 +110,15 @@ extern int gunzip_main(int argc, char **argv)
                }
 
                /* Check that the input is sane.  */
-               if (isatty(src_fd) && ((flags & gunzip_force) == 0)) {
+               if (isatty(src_fd) && ((opt & GUNZIP_OPT_FORCE) == 0)) {
                        bb_error_msg_and_die
                                ("compressed data not read from terminal.  Use -f to force it.");
                }
 
                /* Set output filename and number */
-               if (flags & gunzip_test) {
+               if (opt & GUNZIP_OPT_TEST) {
                        dst_fd = bb_xopen("/dev/null", O_WRONLY);       /* why does test use filenum 2 ? */
-               } else if (flags & gunzip_to_stdout) {
+               } else if (opt & GUNZIP_OPT_STDOUT) {
                        dst_fd = fileno(stdout);
                } else {
                        char *extension;