busybox/libbb/wfopen_input.c
Denis Vlasenko 62a90cdd74 *: shrink by using [f]open_or_warn_stdin where appropriate
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
2008-03-17 09:07:36 +00:00

49 lines
1.0 KiB
C

/* vi: set sw=4 ts=4: */
/*
* wfopen_input implementation for busybox
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* A number of applets need to open a file for reading, where the filename
* is a command line arg. Since often that arg is '-' (meaning stdin),
* we avoid testing everywhere by consolidating things in this routine.
*/
#include "libbb.h"
FILE *fopen_or_warn_stdin(const char *filename)
{
FILE *fp = stdin;
if (filename != bb_msg_standard_input
&& NOT_LONE_DASH(filename)
) {
fp = fopen_or_warn(filename, "r");
}
return fp;
}
FILE *xfopen_stdin(const char *filename)
{
FILE *fp = fopen_or_warn_stdin(filename);
if (fp)
return fp;
xfunc_die(); /* We already output an error message. */
}
int open_or_warn_stdin(const char *filename)
{
int fd = STDIN_FILENO;
if (filename != bb_msg_standard_input
&& NOT_LONE_DASH(filename)
) {
fd = open_or_warn(filename, O_RDONLY);
}
return fd;
}