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some tweaks by cow to shrink a little

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This commit is contained in:
Mike Frysinger 2005-09-10 02:47:19 +00:00
parent 6b00d0d3ca
commit a80b290e30
1 changed files with 11 additions and 24 deletions
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35
coreutils/sum.c
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@ -1,3 +1,4 @@
/* vi: set sw=4 ts=4: */
/* /*
* sum -- checksum and count the blocks in a file * sum -- checksum and count the blocks in a file
* Like BSD sum or SysV sum -r, except like SysV sum if -s option is given. * Like BSD sum or SysV sum -r, except like SysV sum if -s option is given.
@ -9,20 +10,7 @@
* Written by Kayvan Aghaiepour and David MacKenzie * Written by Kayvan Aghaiepour and David MacKenzie
* Taken from coreutils and turned into a busybox applet by Mike Frysinger * Taken from coreutils and turned into a busybox applet by Mike Frysinger
* *
* This program is free software; you can redistribute it and/or modify * Licensed under the GPL v2, see the file LICENSE in this tarball.
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/ */
#include <stdio.h> #include <stdio.h>
@ -32,7 +20,7 @@
#include <unistd.h> #include <unistd.h>
#include <getopt.h> #include <getopt.h>
#include "libbb.h" #include "busybox.h"
/* 1 if any of the files read were the standard input */ /* 1 if any of the files read were the standard input */
static int have_read_stdin; static int have_read_stdin;
@ -95,10 +83,10 @@ static int bsd_sum_file(const char *file, int print_name)
Return 1 if successful. */ Return 1 if successful. */
static int sysv_sum_file(const char *file, int print_name) static int sysv_sum_file(const char *file, int print_name)
{ {
#define MY_BUF_SIZE 8192
int fd; int fd;
unsigned char buf[8192]; unsigned char buf[MY_BUF_SIZE];
uintmax_t total_bytes = 0; uintmax_t total_bytes = 0;
int r;
int checksum; int checksum;
/* The sum of all the input bytes, modulo (UINT_MAX + 1). */ /* The sum of all the input bytes, modulo (UINT_MAX + 1). */
@ -117,7 +105,7 @@ static int sysv_sum_file(const char *file, int print_name)
while (1) { while (1) {
size_t i; size_t i;
size_t bytes_read = safe_read(fd, buf, sizeof(buf)); size_t bytes_read = safe_read(fd, buf, MY_BUF_SIZE);
if (bytes_read == 0) if (bytes_read == 0)
break; break;
@ -139,15 +127,14 @@ static int sysv_sum_file(const char *file, int print_name)
return 0; return 0;
} }
r = (s & 0xffff) + ((s & 0xffffffff) >> 16); {
checksum = (r & 0xffff) + (r >> 16); int r = (s & 0xffff) + ((s & 0xffffffff) >> 16);
checksum = (r & 0xffff) + (r >> 16);
}
printf("%d %s ", checksum, printf("%d %s ", checksum,
make_human_readable_str(total_bytes, 1, 512)); make_human_readable_str(total_bytes, 1, 512));
if (print_name) puts(print_name ? file : "");
puts(file);
else
printf("\n");
return 1; return 1;
} }