1 files changed, 100 insertions, 0 deletions

diff --git a/busybox/coreutils/sort.c b/busybox/coreutils/sort.c
new file mode 100644
index 000000000..8cc4d8886
--- /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);
+}