1 files changed, 100 insertions, 0 deletions
diff --git a/busybox/coreutils/sort.c b/busybox/coreutils/sort.c
new file mode 100644
index 0000000..8cc4d88
--- /dev/null
+++ b/busybox/coreutils/sort.c
@@ -0,0 +1,100 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini sort implementation for busybox
+ *
+ * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
+ *
+ * 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
+ *
+ */
+
+/* BB_AUDIT SUSv3 _NOT_ compliant -- a number of options are not supported. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/sort.html */
+
+/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
+ *
+ * Now does proper error checking on i/o.  Plus some space savings.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "busybox.h"
+#include "libcoreutils/coreutils.h"
+
+static int compare_ascii(const void *x, const void *y)
+{
+	return strcmp(*(char **)x, *(char **)y);
+}
+
+static int compare_numeric(const void *x, const void *y)
+{
+	int z = atoi(*(char **)x) - atoi(*(char **)y);
+	return z ? z : strcmp(*(char **)x, *(char **)y);
+}
+
+int sort_main(int argc, char **argv)
+{
+	FILE *fp;
+	char *line, **lines = NULL;
+	int i, nlines = 0, inc;
+	int (*compare)(const void *, const void *) = compare_ascii;
+
+	int flags;
+
+	bb_default_error_retval = 2;
+
+	flags = bb_getopt_ulflags(argc, argv, "nru");
+	if (flags & 1) {
+		compare = compare_numeric;
+	}
+
+	argv += optind;
+	if (!*argv) {
+		*--argv = "-";
+	}
+
+	do {
+		fp = xgetoptfile_sort_uniq(argv, "r");
+		while ((line = bb_get_chomped_line_from_file(fp)) != NULL) {
+			lines = xrealloc(lines, sizeof(char *) * (nlines + 1));
+			lines[nlines++] = line;
+		}
+		bb_xferror(fp, *argv);
+		bb_fclose_nonstdin(fp);
+	} while (*++argv);
+
+	/* sort it */
+	qsort(lines, nlines, sizeof(char *), compare);
+
+	/* print it */
+	i = 0;
+	--nlines;
+	if ((inc = 1 - (flags & 2)) < 0) {	/* reverse */
+		i = nlines;
+	}
+	flags &= 4;
+
+	while (nlines >= 0) {
+		if (!flags || !nlines || strcmp(lines[i+inc], lines[i])) {
+			puts(lines[i]);
+		}
+		i += inc;
+		--nlines;
+	}
+
+	bb_fflush_stdout_and_exit(EXIT_SUCCESS);
+}