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uniq: getopt32-ization. -38 bytes.

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This commit is contained in:
Denis Vlasenko 2007-03-31 10:19:11 +00:00
parent 666c40c9fc
commit 4caa09a782
1 changed files with 23 additions and 22 deletions
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45
coreutils/uniq.c
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@ -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;
input_filename = *(argv += optind);
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;
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);