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Whitespace-level changes. Replace s0,s1,e0,e1 with real variable names and

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clean up whitespace and curly brackets a bit.  Resulting binary should be
identical.
This commit is contained in:
Rob Landley 2005-09-06 01:57:11 +00:00
parent 9955c45907
commit 1283a150ae
1 changed files with 24 additions and 39 deletions
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63
coreutils/uniq.c
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@ -36,74 +36,59 @@ static const char uniq_opts[] = "f:s:cdu\0\7\3\5\1\2\4";
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 *s0, *e0, *s1, *e1, *input_filename;
const char *oldline, *oldskipped, *line, *skipped, *input_filename;
int opt;
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);
} else if ((s0 = strchr(uniq_opts, opt)) != NULL) {
uniq_flags &= s0[4];
uniq_flags |= s0[7];
} else {
bb_show_usage();
}
if (opt == 'f') skip_fields = bb_xgetularg10(optarg);
else if (opt == 's') skip_chars = bb_xgetularg10(optarg);
else if ((line = strchr(uniq_opts, opt)) != NULL) {
uniq_flags &= line[4];
uniq_flags |= line[7];
} else bb_show_usage();
}
input_filename = *(argv += optind);
in = xgetoptfile_sort_uniq(argv, "r");
if (*argv) {
++argv;
}
if (*argv) ++argv;
out = xgetoptfile_sort_uniq(argv, "w");
if (*argv && argv[1]) {
bb_show_usage();
}
if (*argv && argv[1]) bb_show_usage();
s0 = NULL;
oldline = NULL;
/* gnu uniq ignores newlines */
while ((s1 = bb_get_chomped_line_from_file(in)) != NULL) {
e1 = s1;
while ((line = bb_get_chomped_line_from_file(in)) != NULL) {
skipped = line;
for (i=skip_fields ; i ; i--) {
e1 = bb_skip_whitespace(e1);
while (*e1 && !isspace(*e1)) {
++e1;
}
skipped = bb_skip_whitespace(skipped);
while (*skipped && !isspace(*skipped)) ++skipped;
}
for (i = skip_chars ; *e1 && i ; i--) {
++e1;
}
if (s0) {
if (strcmp(e0, e1) == 0) {
for (i = skip_chars ; *skipped && i ; i--) ++skipped;
if (oldline) {
if (strcmp(oldskipped, skipped) == 0) {
++dups; /* Note: Testing for overflow seems excessive. */
continue;
}
DO_LAST:
DO_LAST:
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);
bb_fprintf(out, "%s\n", oldline);
}
free((void *)s0);
free((void *)oldline);
}
s0 = s1;
e0 = e1;
oldline = line;
oldskipped = skipped;
dups = 0;
}
if (s0) {
e1 = NULL;
if (oldline) {
skipped = NULL;
goto DO_LAST;
}