Rob, I don't know why you feel some unexplainable compulsion to get rid of

a meaningless warning.  But I do expect you preserve the coding style
and variable names when all you're doing is tweaking some of my code.

I repeat... do NOT change whitespace, variable names, or coding style in
any of my code simply to conform to your coding style.
This commit is contained in:
Manuel Novoa III 2005-09-08 06:02:49 +00:00
parent ae32016fc9
commit 415f6c9628

View File

@ -4,7 +4,19 @@
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPL v2, see file LICENSE in this tarball for details.
* This program is free software; you can redistribute it and/or modify
* 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
*
*/
@ -19,83 +31,93 @@
#include "busybox.h"
#include "libcoreutils/coreutils.h"
/* The extra data is flags to make -d and -u switch each other off */
static const char uniq_opts[] = "cudf:s:\0\7\3\5\1\2\4";
static const char uniq_opts[] = "f:s:cdu\0\7\3\5\1\2\4";
#define SHOW_COUNT 1
#define SHOW_UNIQUE 2
#define SHOW_DUPLICATE 4
static FILE *open_arg(char **argv, char *mode)
static FILE *xgetoptfile_sort_uniq_s(char **argv, const char *mode)
{
char *n=*argv;
const char *n;
return (n && *n != '-' && n[1]) ? bb_xfopen(n, mode) :
*mode=='r' ? stdin : stdout;
if ((n = *argv) != NULL) {
if ((*n != '-') || n[1]) {
return bb_xfopen(n, mode);
}
}
return (*mode == 'r') ? stdin : stdout;
}
int uniq_main(int argc, char **argv)
{
FILE *in, *out;
/* Note: Ignore the warning about dups and e0 being used uninitialized.
* They will be initialized on the fist pass of the loop (since s0 is NULL). */
#warning The dups and e0 warnings are OK, ignore them
unsigned long dups, skip_fields, skip_chars, i;
const char *oldline, *oldskipped, *line, *skipped, *input_filename;
const char *s0, *e0, *s1, *e1, *input_filename;
int opt;
int uniq_flags = SHOW_UNIQUE | SHOW_DUPLICATE;
int uniq_flags = 6; /* -u */
skip_fields = skip_chars = 0;
while ((opt = getopt(argc, argv, uniq_opts)) > 0) {
if (opt == 'f') skip_fields = bb_xgetularg10(optarg);
else if (opt == 's') skip_chars = bb_xgetularg10(optarg);
/* This bit uses the extra data at the end of uniq_opts to make
* -d and -u switch each other off in a very small amount of space */
else if ((line = strchr(uniq_opts, opt)) != NULL) {
uniq_flags &= line[8];
uniq_flags |= line[11];
} else bb_show_usage();
if (opt == 'f') {
skip_fields = bb_xgetularg10(optarg);
} else if (opt == 's') {
skip_chars = bb_xgetularg10(optarg);
} else if ((s0 = strchr(uniq_opts, opt)) != NULL) {
uniq_flags &= s0[4];
uniq_flags |= s0[7];
} else {
bb_show_usage();
}
}
input_filename = *(argv += optind);
in = open_arg(argv, "r");
if (*argv) ++argv;
out = open_arg(argv, "w");
if (*argv && argv[1]) bb_show_usage();
in = xgetoptfile_sort_uniq_s(argv, "r");
if (*argv) {
++argv;
}
out = xgetoptfile_sort_uniq_s(argv, "w");
if (*argv && argv[1]) {
bb_show_usage();
}
line = skipped = NULL;
NOT_DUPLICATE:
oldline = line;
oldskipped = skipped;
dups = 0;
s0 = NULL;
/* gnu uniq ignores newlines */
while ((line = bb_get_chomped_line_from_file(in)) != NULL) {
skipped = line;
while ((s1 = bb_get_chomped_line_from_file(in)) != NULL) {
e1 = s1;
for (i=skip_fields ; i ; i--) {
skipped = bb_skip_whitespace(skipped);
while (*skipped && !isspace(*skipped)) ++skipped;
e1 = bb_skip_whitespace(e1);
while (*e1 && !isspace(*e1)) {
++e1;
}
for (i = skip_chars ; *skipped && i ; i--) ++skipped;
if (oldline) {
if (!strcmp(oldskipped, skipped)) {
}
for (i = skip_chars ; *e1 && i ; i--) {
++e1;
}
if (s0) {
if (strcmp(e0, e1) == 0) {
++dups; /* Note: Testing for overflow seems excessive. */
continue;
}
DO_LAST:
if (uniq_flags & (dups ? SHOW_DUPLICATE : SHOW_UNIQUE)) {
bb_fprintf(out, "\0%7d " + (uniq_flags & SHOW_COUNT), dups + 1);
bb_fprintf(out, "%s\n", oldline);
if ((dups && (uniq_flags & 2)) || (!dups && (uniq_flags & 4))) {
bb_fprintf(out, "\0%7d\t" + (uniq_flags & 1), dups + 1);
bb_fprintf(out, "%s\n", s0);
}
free((void *)oldline);
}
goto NOT_DUPLICATE;
free((void *)s0);
}
if (oldline) goto DO_LAST;
s0 = s1;
e0 = e1;
dups = 0;
}
if (s0) {
e1 = NULL;
goto DO_LAST;
}
bb_xferror(in, input_filename);