From e7d9f82a0f48921d9ead9da0a584466d43dc11df Mon Sep 17 00:00:00 2001
From: Darin Adler <darin@src.gnome.org>
Date: Tue, 6 Mar 2001 23:33:19 +0000
Subject: Merge all changes from gnome-vfs-1 branch to HEAD.

---
 capplets/file-types/libuuid/uuid_time.c | 138 ++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 capplets/file-types/libuuid/uuid_time.c

(limited to 'capplets/file-types/libuuid/uuid_time.c')

diff --git a/capplets/file-types/libuuid/uuid_time.c b/capplets/file-types/libuuid/uuid_time.c
new file mode 100644
index 000000000..9a302202a
--- /dev/null
+++ b/capplets/file-types/libuuid/uuid_time.c
@@ -0,0 +1,138 @@
+/*
+ * uuid_time.c --- Interpret the time field from a uuid.  This program
+ * 	violates the UUID abstraction barrier by reaching into the guts
+ *	of a UUID and interpreting it.
+ * 
+ * Copyright (C) 1998, 1999 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>
+
+#include "uuidP.h"
+
+time_t uuid_time(uuid_t uu, struct timeval *ret_tv)
+{
+	struct uuid		uuid;
+	guint32			high;
+	struct timeval		tv;
+	unsigned long long	clock_reg;
+
+	uuid_unpack(uu, &uuid);
+	
+	high = uuid.time_mid | ((uuid.time_hi_and_version & 0xFFF) << 16);
+	clock_reg = uuid.time_low | ((unsigned long long) high << 32);
+
+	clock_reg -= (((unsigned long long) 0x01B21DD2) << 32) + 0x13814000;
+	tv.tv_sec = clock_reg / 10000000;
+	tv.tv_usec = (clock_reg % 10000000) / 10;
+
+	if (ret_tv)
+		*ret_tv = tv;
+
+	return tv.tv_sec;
+}
+
+int uuid_type(uuid_t uu)
+{
+	struct uuid		uuid;
+
+	uuid_unpack(uu, &uuid);	
+	return ((uuid.time_hi_and_version >> 12) & 0xF);
+}
+
+int uuid_variant(uuid_t uu)
+{
+	struct uuid		uuid;
+	int			var;
+
+	uuid_unpack(uu, &uuid);	
+	var = uuid.clock_seq;
+
+	if ((var & 0x8000) == 0)
+		return UUID_VARIANT_NCS;
+	if ((var & 0x4000) == 0)
+		return UUID_VARIANT_DCE;
+	if ((var & 0x2000) == 0)
+		return UUID_VARIANT_MICROSOFT;
+	return UUID_VARIANT_OTHER;
+}
+
+#ifdef DEBUG
+static const char *variant_string(int variant)
+{
+	switch (variant) {
+	case UUID_VARIANT_NCS:
+		return "NCS";
+	case UUID_VARIANT_DCE:
+		return "DCE";
+	case UUID_VARIANT_MICROSOFT:
+		return "Microsoft";
+	default:
+		return "Other";
+	}
+}
+
+	
+int
+main(int argc, char **argv)
+{
+	uuid_t		buf;
+	time_t		time_reg;
+	struct timeval	tv;
+	int		type, variant;
+
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s uuid\n", argv[0]);
+		exit(1);
+	}
+	if (uuid_parse(argv[1], buf)) {
+		fprintf(stderr, "Invalid UUID: %s\n", argv[1]);
+		exit(1);
+	}
+	variant = uuid_variant(buf);
+	type = uuid_type(buf);
+	time_reg = uuid_time(buf, &tv);
+
+	printf("UUID variant is %d (%s)\n", variant, variant_string(variant));
+	if (variant != UUID_VARIANT_DCE) {
+		printf("Warning: This program only knows how to interpret "
+		       "DCE UUIDs.\n\tThe rest of the output is likely "
+		       "to be incorrect!!\n");
+	}
+	printf("UUID type is %d", type);
+	switch (type) {
+	case 1:
+		printf(" (time based)\n");
+		break;
+	case 2:
+		printf(" (DCE)\n");
+		break;
+	case 3:
+		printf(" (name-based)\n");
+		break;
+	case 4:
+		printf(" (random)\n");
+		break;
+	default:
+		printf("\n");
+	}
+	if (type != 1) {
+		printf("Warning: not a time-based UUID, so UUID time "
+		       "decoding will likely not work!\n");
+	}
+	printf("UUID time is: (%u, %u): %s\n", (unsigned)tv.tv_sec, (unsigned)tv.tv_usec,
+	       ctime(&time_reg));
+	
+	return 0;
+}
+#endif
-- 
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