svn commit: r205741 - user/des/svnsup/src/libsvnsup

[Dag-Erling Smorgrav]

Author: des
Date: Sat Mar 27 16:42:53 2010
New Revision: 205741
URL: http://svn.freebsd.org/changeset/base/205741

Log:
  base64 lookup table generator

Added:
  user/des/svnsup/src/libsvnsup/b64.c   (contents, props changed)

Added: user/des/svnsup/src/libsvnsup/b64.c
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/des/svnsup/src/libsvnsup/b64.c	Sat Mar 27 16:42:53 2010	(r205741)
@@ -0,0 +1,75 @@
+/*-
+ * Copyright (c) 2010 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ */
+
+#include <stdio.h>
+
+static const char b64enc[64] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+    "abcdefghijklmnopqrstuvwxyz"
+    "0123456789"
+    "+/";
+
+static char b64dec[256];
+
+int
+main(void)
+{
+	int i, j;
+
+	for (i = 0; i < 64; ++i)
+		b64dec[(int)b64enc[i]] = i + 1;
+	for (i = 0; i < 256; ++i)
+		--b64dec[i];
+
+	printf("static const char b64enc[64] = {\n");
+	for (i = 0; i < 8; ++i) {
+		putchar('\t');
+		for (j = 0; j < 8; ++j) {
+			if (j > 0)
+				putchar(' ');
+			printf("'%c',", b64enc[i * 8 + j]);
+		}
+		putchar('\n');
+	}
+	printf("};\n");
+
+	printf("static const char b64dec[256] = {\n");
+	for (i = 0; i < 16; ++i) {
+		putchar('\t');
+		for (j = 0; j < 16; ++j) {
+			if (j > 0)
+				putchar(' ');
+			printf("%2d,", b64dec[i * 16 + j]);
+		}
+		putchar('\n');
+	}
+	printf("};\n");
+
+	return (0);
+}