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uniq: shave off whole 10 bytes off, oh my

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text    data     bss     dec     hex filename
 823673     458    6956  831087   cae6f busybox_old
 823663     458    6956  831077   cae65 busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-08-31 05:15:21 +02:00
parent a00329ca8e
commit 44f174e61b
1 changed files with 22 additions and 23 deletions
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45
coreutils/uniq.c
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@ -12,20 +12,6 @@
#include "libbb.h" #include "libbb.h"
static void xgetoptfile_uniq_s(const char *n, int fd)
{
if (n == NULL)
return;
if ((n[0] == '-') && !n[1])
return;
/* close(fd); - optimization */
xmove_fd(
xopen3(n,
(fd == STDIN_FILENO) ? O_RDONLY : (O_WRONLY | O_CREAT | O_TRUNC),
0666),
fd);
}
int uniq_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int uniq_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int uniq_main(int argc UNUSED_PARAM, char **argv) int uniq_main(int argc UNUSED_PARAM, char **argv)
{ {
@ -51,15 +37,25 @@ int uniq_main(int argc UNUSED_PARAM, char **argv)
opt = getopt32(argv, "cduf:s:w:", &skip_fields, &skip_chars, &max_chars); opt = getopt32(argv, "cduf:s:w:", &skip_fields, &skip_chars, &max_chars);
argv += optind; argv += optind;
input_filename = *argv; input_filename = argv[0];
if (input_filename) {
const char *output;
xgetoptfile_uniq_s(*argv, STDIN_FILENO); if (input_filename[0] != '-' || input_filename[1]) {
if (*argv) { close(STDIN_FILENO); /* == 0 */
++argv; xopen(input_filename, O_RDONLY); /* fd will be 0 */
} }
xgetoptfile_uniq_s(*argv, STDOUT_FILENO); output = argv[1];
if (*argv && argv[1]) { if (output) {
bb_show_usage(); if (argv[2])
bb_show_usage();
if (output[0] != '-' || output[1]) {
// Won't work with "uniq - FILE" and closed stdin:
//close(STDOUT_FILENO);
//xopen3(output, O_WRONLY | O_CREAT | O_TRUNC, 0666);
xmove_fd(xopen3(output, O_WRONLY | O_CREAT | O_TRUNC, 0666), STDOUT_FILENO);
}
}
} }
cur_compare = cur_line = NULL; /* prime the pump */ cur_compare = cur_line = NULL; /* prime the pump */
@ -95,7 +91,10 @@ int uniq_main(int argc UNUSED_PARAM, char **argv)
if (old_line) { if (old_line) {
if (!(opt & (OPT_d << !!dups))) { /* (if dups, opt & OPT_u) */ if (!(opt & (OPT_d << !!dups))) { /* (if dups, opt & OPT_u) */
printf("\0%lu " + (opt & 1), dups + 1); /* 1 == OPT_c */ if (opt & OPT_c) {
/* %7lu matches GNU coreutils 6.9 */
printf("%7lu ", dups + 1);
}
printf("%s\n", old_line); printf("%s\n", old_line);
} }
free(old_line); free(old_line);