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Diffstat (limited to 'i/pc104/initrd/conf/busybox/coreutils/uniq.c')
-rw-r--r--i/pc104/initrd/conf/busybox/coreutils/uniq.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/coreutils/uniq.c b/i/pc104/initrd/conf/busybox/coreutils/uniq.c
new file mode 100644
index 0000000..0cc0c83
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/coreutils/uniq.c
@@ -0,0 +1,104 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * uniq implementation for busybox
+ *
+ * Copyright (C) 2005 Manuel Novoa III <mjn3@codepoet.org>
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+/* BB_AUDIT SUSv3 compliant */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/uniq.html */
+
+#include "busybox.h"
+
+static const char uniq_opts[] = "f:s:" "cdu\0\1\2\4";
+
+static FILE *xgetoptfile_uniq_s(char **argv, int read0write2)
+{
+ const char *n;
+
+ if ((n = *argv) != NULL) {
+ if ((*n != '-') || n[1]) {
+ return xfopen(n, "r\0w" + read0write2);
+ }
+ }
+ return (read0write2) ? stdout : stdin;
+}
+
+int uniq_main(int argc, char **argv);
+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')) {
+ unsigned long t = xatoul(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 = xmalloc_getline(in)) != NULL) {
+ e1 = s1;
+ for (i = skip_fields; i; i--) {
+ e1 = 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))) {
+ fprintf(out, "\0%d " + (uniq_flags & 1), dups + 1);
+ fprintf(out, "%s\n", s0);
+ }
+ free((void *)s0);
+ }
+ } while (s1);
+
+ die_if_ferror(in, input_filename);
+
+ fflush_stdout_and_exit(EXIT_SUCCESS);
+}