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*: shrink by using [f]open_or_warn_stdin where appropriate

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function                                             old     new   delta
lsattr_main                                           62     143     +81
open_or_warn_stdin                                     -      36     +36
fclose_if_not_stdin                                   20      47     +27
xfopen_stdin                                           -      20     +20
tac_main                                             336     356     +20
cksum_main                                           249     259     +10
bb_argv_dash                                           -       8      +8
su_main                                              448     455      +7
cmp_main                                             630     633      +3
passwd_main                                         1072    1074      +2
uudecode_main                                        317     315      -2
text_yank                                            110     108      -2
handle_incoming_and_exit                            2653    2651      -2
flags                                                  5       1      -4
write_leases                                         235     230      -5
fopen_or_warn_stdin                                   48      42      -6
fold_main                                            648     642      -6
static.argv_dash                                       8       -      -8
sum_main                                             142     128     -14
tail_main                                           1237    1221     -16
sed_main                                             711     695     -16
cmp_xfopen_input                                      17       -     -17
bb_cat                                               113      96     -17
catv_main                                            328     306     -22
strings_main                                         457     434     -23
hash_file                                            298     274     -24
sum_file                                             353     325     -28
sort_main                                            904     859     -45
expand_main                                          736     686     -50
cut_main                                            1116    1065     -51
md5_sha1_sum_main                                    549     493     -56
lsattr_args                                           90       -     -90
read_stduu                                           408     255    -153
------------------------------------------------------------------------------
(add/remove: 3/3 grow/shrink: 7/20 up/down: 214/-657)        Total: -443 bytes
   text    data     bss     dec     hex filename
 797417     658    7428  805503   c4a7f busybox_old
 796973     658    7428  805059   c48c3 busybox_unstripped
This commit is contained in:
Denis Vlasenko
2008-03-17 09:07:36 +00:00
parent d02db89244
commit 62a90cdd74
26 changed files with 214 additions and 219 deletions
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27
coreutils/sum.c
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@ -21,20 +21,17 @@ enum { SUM_BSD, PRINT_NAME, SUM_SYSV };
The checksum varies depending on sizeof (int). */
/* SYSV: calculate and print the checksum and the size in 512-byte blocks */
/* Return 1 if successful. */
static unsigned sum_file(const char *file, const unsigned type)
static unsigned sum_file(const char *file, unsigned type)
{
#define buf bb_common_bufsiz1
unsigned long long total_bytes = 0;
int fd = 0, r;
int fd, r;
/* The sum of all the input bytes, modulo (UINT_MAX + 1). */
unsigned s = 0;
if (NOT_LONE_DASH(file)) {
fd = open(file, O_RDONLY);
if (fd == -1)
goto ret_bad;
}
fd = open_or_warn_stdin(file);
if (fd == -1)
return 0;
while (1) {
size_t bytes_read = safe_read(fd, buf, BUFSIZ);
@ -44,7 +41,6 @@ static unsigned sum_file(const char *file, const unsigned type)
if (!bytes_read && !r)
/* no error */
break;
ret_bad:
bb_perror_msg(file);
return 0;
}
@ -75,26 +71,29 @@ static unsigned sum_file(const char *file, const unsigned type)
}
int sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int sum_main(int argc, char **argv)
int sum_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
unsigned n;
unsigned type = SUM_BSD;
n = getopt32(argv, "sr");
argv += optind;
if (n & 1) type = SUM_SYSV;
/* give the bsd priority over sysv func */
if (n & 2) type = SUM_BSD;
if (argc == optind) {
if (!argv[0]) {
/* Do not print the name */
n = sum_file("-", type);
} else {
/* Need to print the name if either
- more than one file given
- doing sysv */
type += argc - 1 > optind || type == SUM_SYSV;
for (n = 1; optind < argc; optind++)
n &= sum_file(argv[optind], type);
type += (argv[1] || type == SUM_SYSV);
n = 1;
do {
n &= sum_file(*argv, type);
} while (*++argv);
}
return !n;
}