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authorDenys Vlasenko2009-08-30 19:35:06 +0200
committerDenys Vlasenko2009-08-30 19:35:06 +0200
commit1249dbb2c77af8543e58a4bb217196e1b97aff9b (patch)
treeff931d97afb9397458fd0b172b8c7753c9f0cf9e /coreutils
parenta9c9bf5055956b9578911c1d773acf6a16397b84 (diff)
downloadbusybox-1249dbb2c77af8543e58a4bb217196e1b97aff9b.zip
busybox-1249dbb2c77af8543e58a4bb217196e1b97aff9b.tar.gz
uniq: code shrink
function old new delta xgetoptfile_uniq_s 44 51 +7 uniq_main 389 368 -21 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 7/-21) Total: -14 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/uniq.c34
1 files changed, 17 insertions, 17 deletions
diff --git a/coreutils/uniq.c b/coreutils/uniq.c
index be53b31..910f46e 100644
--- a/coreutils/uniq.c
+++ b/coreutils/uniq.c
@@ -12,23 +12,23 @@
#include "libbb.h"
-static FILE *xgetoptfile_uniq_s(char **argv, int read0write2)
+static void xgetoptfile_uniq_s(const char *n, int fd)
{
- const char *n;
-
- n = *argv;
- if (n != NULL) {
- if ((n[0] != '-') || n[1]) {
- return xfopen(n, "r\0w" + read0write2);
- }
- }
- return (read0write2) ? stdout : stdin;
+ 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 UNUSED_PARAM, char **argv)
{
- FILE *in, *out;
const char *input_filename;
unsigned skip_fields, skip_chars, max_chars;
unsigned opt;
@@ -53,11 +53,11 @@ int uniq_main(int argc UNUSED_PARAM, char **argv)
input_filename = *argv;
- in = xgetoptfile_uniq_s(argv, 0);
+ xgetoptfile_uniq_s(*argv, STDIN_FILENO);
if (*argv) {
++argv;
}
- out = xgetoptfile_uniq_s(argv, 2);
+ xgetoptfile_uniq_s(*argv, STDOUT_FILENO);
if (*argv && argv[1]) {
bb_show_usage();
}
@@ -75,7 +75,7 @@ int uniq_main(int argc UNUSED_PARAM, char **argv)
dups = 0;
/* gnu uniq ignores newlines */
- while ((cur_line = xmalloc_fgetline(in)) != NULL) {
+ while ((cur_line = xmalloc_fgetline(stdin)) != NULL) {
cur_compare = cur_line;
for (i = skip_fields; i; i--) {
cur_compare = skip_whitespace(cur_compare);
@@ -95,14 +95,14 @@ int uniq_main(int argc UNUSED_PARAM, char **argv)
if (old_line) {
if (!(opt & (OPT_d << !!dups))) { /* (if dups, opt & OPT_u) */
- fprintf(out, "\0%lu " + (opt & 1), dups + 1); /* 1 == OPT_c */
- fprintf(out, "%s\n", old_line);
+ printf("\0%lu " + (opt & 1), dups + 1); /* 1 == OPT_c */
+ printf("%s\n", old_line);
}
free(old_line);
}
} while (cur_line);
- die_if_ferror(in, input_filename);
+ die_if_ferror(stdin, input_filename);
fflush_stdout_and_exit(EXIT_SUCCESS);
}