Adding upstream version 1:5.44.upstream/1%5.44upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 203 insertions, 0 deletions

diff --git a/src/cdf_time.c b/src/cdf_time.c
new file mode 100644
index 0000000..63a68fe
--- /dev/null
+++ b/src/cdf_time.c
@@ -0,0 +1,203 @@
+/*-
+ * Copyright (c) 2008 Christos Zoulas
+ * 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.
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include "file.h"
+
+#ifndef lint
+FILE_RCSID("@(#)$File: cdf_time.c,v 1.23 2022/09/24 20:30:13 christos Exp $")
+#endif
+
+#include <time.h>
+#ifdef TEST
+#include <err.h>
+#endif
+#include <string.h>
+
+#include "cdf.h"
+
+#define isleap(y) ((((y) % 4) == 0) && \
+    ((((y) % 100) != 0) || (((y) % 400) == 0)))
+
+static const int mdays[] = {
+    31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
+};
+
+/*
+ * Return the number of days between jan 01 1601 and jan 01 of year.
+ */
+static int
+cdf_getdays(int year)
+{
+	int days = 0;
+	int y;
+
+	for (y = CDF_BASE_YEAR; y < year; y++)
+		days += isleap(y) + 365;
+
+	return days;
+}
+
+/*
+ * Return the day within the month
+ */
+static int
+cdf_getday(int year, int days)
+{
+	size_t m;
+
+	for (m = 0; m < __arraycount(mdays); m++) {
+		int sub = mdays[m] + (m == 1 && isleap(year));
+		if (days < sub)
+			return days;
+		days -= sub;
+	}
+	return days;
+}
+
+/*
+ * Return the 0...11 month number.
+ */
+static int
+cdf_getmonth(int year, int days)
+{
+	size_t m;
+
+	for (m = 0; m < __arraycount(mdays); m++) {
+		days -= mdays[m];
+		if (m == 1 && isleap(year))
+			days--;
+		if (days <= 0)
+			return CAST(int, m);
+	}
+	return CAST(int, m);
+}
+
+int
+cdf_timestamp_to_timespec(struct timespec *ts, cdf_timestamp_t t)
+{
+	struct tm tm;
+#ifdef HAVE_STRUCT_TM_TM_ZONE
+	static char UTC[] = "UTC";
+#endif
+	int rdays;
+
+	/* Unit is 100's of nanoseconds */
+	ts->tv_nsec = (t % CDF_TIME_PREC) * 100;
+
+	t /= CDF_TIME_PREC;
+	tm.tm_sec = CAST(int, t % 60);
+	t /= 60;
+
+	tm.tm_min = CAST(int, t % 60);
+	t /= 60;
+
+	tm.tm_hour = CAST(int, t % 24);
+	t /= 24;
+
+	/* XXX: Approx */
+	tm.tm_year = CAST(int, CDF_BASE_YEAR + (t / 365));
+
+	rdays = cdf_getdays(tm.tm_year);
+	t -= rdays - 1;
+	tm.tm_mday = cdf_getday(tm.tm_year, CAST(int, t));
+	tm.tm_mon = cdf_getmonth(tm.tm_year, CAST(int, t));
+	tm.tm_wday = 0;
+	tm.tm_yday = 0;
+	tm.tm_isdst = 0;
+#ifdef HAVE_STRUCT_TM_TM_GMTOFF
+	tm.tm_gmtoff = 0;
+#endif
+#ifdef HAVE_STRUCT_TM_TM_ZONE
+	tm.tm_zone = UTC;
+#endif
+	tm.tm_year -= 1900;
+	ts->tv_sec = mktime(&tm);
+	if (ts->tv_sec == -1) {
+		errno = EINVAL;
+		return -1;
+	}
+	return 0;
+}
+
+int
+/*ARGSUSED*/
+cdf_timespec_to_timestamp(cdf_timestamp_t *t, const struct timespec *ts)
+{
+#ifndef __lint__
+	(void)&t;
+	(void)&ts;
+#endif
+#ifdef notyet
+	struct tm tm;
+	if (gmtime_r(&ts->ts_sec, &tm) == NULL) {
+		errno = EINVAL;
+		return -1;
+	}
+	*t = (ts->ts_nsec / 100) * CDF_TIME_PREC;
+	*t += tm.tm_sec;
+	*t += tm.tm_min * 60;
+	*t += tm.tm_hour * 60 * 60;
+	*t += tm.tm_mday * 60 * 60 * 24;
+#endif
+	return 0;
+}
+
+char *
+cdf_ctime(const time_t *sec, char *buf)
+{
+	char *ptr = ctime_r(sec, buf);
+	if (ptr != NULL)
+		return buf;
+#ifdef WIN32
+	(void)snprintf(buf, 26, "*Bad* 0x%16.16I64x\n",
+	    CAST(long long, *sec));
+#else
+	(void)snprintf(buf, 26, "*Bad* %#16.16" INT64_T_FORMAT "x\n",
+	    CAST(long long, *sec));
+#endif
+	return buf;
+}
+
+
+#ifdef TEST_TIME
+int
+main(int argc, char *argv[])
+{
+	struct timespec ts;
+	char buf[25];
+	static const cdf_timestamp_t tst = 0x01A5E403C2D59C00ULL;
+	static const char *ref = "Sat Apr 23 01:30:00 1977";
+	char *p, *q;
+
+	cdf_timestamp_to_timespec(&ts, tst);
+	p = cdf_ctime(&ts.tv_sec, buf);
+	if ((q = strchr(p, '\n')) != NULL)
+		*q = '\0';
+	if (strcmp(ref, p) != 0)
+		errx(1, "Error date %s != %s\n", ref, p);
+	return 0;
+}
+#endif