uniq: getopt32-ization. -38 bytes.

diff --git a/coreutils/uniq.c b/coreutils/uniq.c
index 0cc0c83b3faa12ba3e776530cd1bc83fa3c365b6..bcdf44026dde46e2189239d0a8daadf717669b02 100644 (file)
--- a/coreutils/uniq.c
+++ b/coreutils/uniq.c
@@ -12,13 +12,14 @@
 
 #include "busybox.h"
 
-static const char uniq_opts[] = "f:s:" "cdu\0\1\2\4";
+static const char uniq_opts[] = "cdu" "f:s:" "cdu\0\1\2\4";
 
 static FILE *xgetoptfile_uniq_s(char **argv, int read0write2)
 {
        const char *n;
 
-       if ((n = *argv) != NULL) {
+       n = *argv;
+       if (n != NULL) {
                if ((*n != '-') || n[1]) {
                        return xfopen(n, "r\0w" + read0write2);
                }
@@ -30,28 +31,28 @@ int uniq_main(int argc, char **argv);
 int uniq_main(int argc, char **argv)
 {
        FILE *in, *out;
-       unsigned long dups, skip_fields, skip_chars, i, uniq_flags;
+       unsigned long dups, skip_fields, skip_chars, i;
        const char *s0, *e0, *s1, *e1, *input_filename;
-       int opt;
+       unsigned opt;
 
-       uniq_flags = skip_fields = skip_chars = 0;
+       enum {
+               OPT_c = 0x1,
+               OPT_d = 0x2,
+               OPT_u = 0x4,
+               OPT_f = 0x8,
+               OPT_s = 0x10,
+       };
 
-       while ((opt = getopt(argc, argv, uniq_opts)) > 0) {
-               if ((opt == 'f') || (opt == 's')) {
-                       unsigned long t = xatoul(optarg);
-                       if (opt == 'f') {
-                               skip_fields = t;
-                       } else {
-                               skip_chars = t;
-                       }
-               } else if ((s0 = strchr(uniq_opts, opt)) != NULL) {
-                       uniq_flags |= s0[4];
-               } else {
-                       bb_show_usage();
-               }
-       }
+       skip_fields = skip_chars = 0;
+
+       opt = getopt32(argc, argv, "cduf:s:", &s0, &s1);
+       if (opt & OPT_f)
+               skip_fields = xatoul(s0);
+       if (opt & OPT_s)
+               skip_chars = xatoul(s1);
+       argv += optind;
 
-       input_filename = *(argv += optind);
+       input_filename = *argv;
 
        in = xgetoptfile_uniq_s(argv, 0);
        if (*argv) {
@@ -90,8 +91,8 @@ int uniq_main(int argc, char **argv)
                }
 
                if (s0) {
-                       if (!(uniq_flags & (2 << !!dups))) {
-                               fprintf(out, "\0%d " + (uniq_flags & 1), dups + 1);
+                       if (!(opt & (OPT_d << !!dups))) { /* (if dups, opt & OPT_e) */
+                               fprintf(out, "\0%d " + (opt & 1), dups + 1);
                                fprintf(out, "%s\n", s0);
                        }
                        free((void *)s0);