tools-source: Introduced versionsort.c, to sort a list of strings using versionsort

src/tools-source/versionsort.c

@@ -0,0 +1,44 @@
+/*
+ * --- SDE-COPYRIGHT-NOTE-BEGIN ---
+ * This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+ *
+ * Filename: src/tools-source/versionsort.c
+ * Copyright (C) 2009 The OpenSDE Project
+ *
+ * More information can be found in the files COPYING and README.
+ *
+ * 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; version 2 of the License. A copy of the
+ * GNU General Public License can be found in the file COPYING.
+ * --- SDE-COPYRIGHT-NOTE-END ---
+ */
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdio.h>
+
+#include <stdlib.h>
+
+static int cmp_version(const void *p1, const void *p2) {
+	const char **s1=(const char **)p1;
+	const char **s2=(const char **)p2;
+	
+	return strverscmp(*s1, *s2);
+}
+
+int main(int argc, char **argv) {
+	register unsigned i;
+
+	if (argc == 1 || strcmp(argv[1],"-?") == 0) {
+		fprintf(stderr, "Usage: %s <s1> <s2> ..\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	qsort(&argv[1], argc-1, sizeof(argv[0]), cmp_version);
+
+	for (i=1; i<(unsigned)argc; i++)
+		printf("%s\n", argv[i]);
+
+	return EXIT_SUCCESS;
+}