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). */
unsigned long dups, skip_fields, skip_chars, i;
const char *s0, *e0, *s1, *e1, *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();
}
}
input_filename = *(argv += optind);
in = xgetoptfile_sort_uniq(argv, "r");
if (*argv) {
++argv;
}
out = xgetoptfile_sort_uniq(argv, "w");
if (*argv && argv[1]) {
bb_show_usage();
}
s0 = NULL;
/* gnu uniq ignores newlines */
while ((s1 = bb_get_chomped_line_from_file(in)) != NULL) {
e1 = s1;
for (i=skip_fields ; i ; i--) {
e1 = bb_skip_whitespace(e1);
while (*e1 && !isspace(*e1)) {
++e1;
}
}
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 ((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 *)s0);
}
s0 = s1;
e0 = e1;
dups = 0;
}
if (s0) {
e1 = NULL;
goto DO_LAST;
}
bb_xferror(in, input_filename);
bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
int cmp_main(int argc, char **argv)
{
FILE *fp1, *fp2, *outfile = stdout;
const char *filename1, *filename2;
const char *fmt;
int c1, c2, char_pos, line_pos;
int opt_flags;
int exit_val = 0;
bb_default_error_retval = 2; /* 1 is returned if files are different. */
opt_flags = bb_getopt_ulflags(argc, argv, opt_chars);
if ((opt_flags == 3) || (((unsigned int)(--argc - optind)) > 1)) {
bb_show_usage();
}
fp1 = cmp_xfopen_input(filename1 = *(argv += optind));
filename2 = "-";
if (*++argv) {
filename2 = *argv;
}
fp2 = cmp_xfopen_input(filename2);
if (fp1 == fp2) { /* Paranioa check... stdin == stdin? */
/* Note that we don't bother reading stdin. Neither does gnu wc.
* But perhaps we should, so that other apps down the chain don't
* get the input. Consider 'echo hello | (cmp - - && cat -)'.
*/
return 0;
}
fmt = fmt_differ;
if (opt_flags == OPT_l) {
fmt = fmt_l_opt;
}
char_pos = 0;
line_pos = 1;
do {
c1 = getc(fp1);
c2 = getc(fp2);
++char_pos;
if (c1 != c2) { /* Remember -- a read error may have occurred. */
exit_val = 1; /* But assume the files are different for now. */
if (c2 == EOF) {
/* We know that fp1 isn't at EOF or in an error state. But to
* save space below, things are setup to expect an EOF in fp1
* if an EOF occurred. So, swap things around.
*/
fp1 = fp2;
filename1 = filename2;
c1 = c2;
}
if (c1 == EOF) {
bb_xferror(fp1, filename1);
fmt = fmt_eof; /* Well, no error, so it must really be EOF. */
outfile = stderr;
/* There may have been output to stdout (option -l), so
* make sure we fflush before writing to stderr. */
bb_xfflush_stdout();
}
if (opt_flags != OPT_s) {
if (opt_flags == OPT_l) {
line_pos = c1; /* line_pos is unused in the -l case. */
}
bb_fprintf(outfile, fmt, filename1, filename2, char_pos, line_pos, c2);
if (opt_flags) { /* This must be -l since not -s. */
/* If we encountered and EOF, the while check will catch it. */
continue;
}
}
break;
}
if (c1 == '\n') {
++line_pos;
}
} while (c1 != EOF);
bb_xferror(fp1, filename1);
bb_xferror(fp2, filename2);
bb_fflush_stdout_and_exit(exit_val);
}
int uniq_main(int argc, char **argv)
{
FILE *in, *out;
unsigned long dups, skip_fields, skip_chars, i, uniq_flags;
const char *s0, *e0, *s1, *e1, *input_filename;
int opt;
uniq_flags = skip_fields = skip_chars = 0;
while ((opt = getopt(argc, argv, uniq_opts)) > 0) {
if ((opt == 'f') || (opt == 's')) {
int t = bb_xgetularg10(optarg);
if (opt == 'f') {
skip_fields = t;
} else {
skip_chars = t;
}
} else if ((s0 = strchr(uniq_opts, opt)) != NULL) {
uniq_flags |= s0[4];
} else {
bb_show_usage();
}
}
input_filename = *(argv += optind);
in = xgetoptfile_uniq_s(argv, 0);
if (*argv) {
++argv;
}
out = xgetoptfile_uniq_s(argv, 2);
if (*argv && argv[1]) {
bb_show_usage();
}
s1 = e1 = NULL; /* prime the pump */
do {
s0 = s1;
e0 = e1;
dups = 0;
/* gnu uniq ignores newlines */
while ((s1 = bb_get_chomped_line_from_file(in)) != NULL) {
e1 = s1;
for (i=skip_fields ; i ; i--) {
e1 = bb_skip_whitespace(e1);
while (*e1 && !isspace(*e1)) {
++e1;
}
}
for (i = skip_chars ; *e1 && i ; i--) {
++e1;
}
if (!s0 || strcmp(e0, e1)) {
break;
}
++dups; /* Note: Testing for overflow seems excessive. */
}
if (s0) {
if (!(uniq_flags & (2 << !!dups))) {
bb_fprintf(out, "\0%d " + (uniq_flags & 1), dups + 1);
bb_fprintf(out, "%s\n", s0);
}
free((void *)s0);
}
} while (s1);
bb_xferror(in, input_filename);
bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
