Considerable re-work of KDM class to express the difference between encrypted and unencrypted KDMs.

1 files changed, 102 insertions, 0 deletions

diff --git a/src/local_time.cc b/src/local_time.cc
new file mode 100644
index 00000000..665d5d41
--- /dev/null
+++ b/src/local_time.cc
@@ -0,0 +1,102 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "local_time.h"
+#include "exceptions.h"
+#include <boost/lexical_cast.hpp>
+#include <cstdio>
+
+using std::string;
+using boost::lexical_cast;
+using namespace dcp;
+
+LocalTime::LocalTime ()
+{
+	time_t now = time (0);
+	struct tm* tm = localtime (&now);
+	_year = tm->tm_year + 1900;
+	_month = tm->tm_mon + 1;
+	_day = tm->tm_mday + 1;
+	_hour = tm->tm_hour;
+	_minute = tm->tm_min;
+	_second = tm->tm_sec;
+
+	int offset = 0;
+	
+#ifdef LIBDCP_POSIX
+	offset = tm->tm_gmtoff / 60;
+#else
+	TIME_ZONE_INFORMATION tz;
+	GetTimeZoneInformation (&tz);
+	offset = tz.Bias;
+#endif
+
+	bool const negative = offset < 0;
+	offset = negative ? -offset : offset;
+
+	_tz_hour = offset / 60;
+	_tz_minute = offset % 60;
+
+	if (negative) {
+		_tz_hour = -_tz_hour;
+	}
+}
+
+/** @param s A string of the form 2013-01-05T18:06:59+04:00 */
+LocalTime::LocalTime (string s)
+{
+	/* 2013-01-05T18:06:59+04:00 */
+        /* 0123456789012345678901234 */
+	
+	if (s.length() < 25) {
+		throw TimeFormatError (s);
+	}
+
+	/* Check incidental characters */
+	if (s[4] != '-' || s[7] != '-' || s[10] != 'T' || s[13] != ':' || s[16] != ':' || s[22] != ':') {
+		throw TimeFormatError (s);
+	}
+	
+	_year = lexical_cast<int> (s.substr (0, 4));
+	_month = lexical_cast<int> (s.substr (5, 2));
+	_day = lexical_cast<int> (s.substr (8, 2));
+	_hour = lexical_cast<int> (s.substr (11, 2));
+	_minute = lexical_cast<int> (s.substr (14, 2));
+	_second = lexical_cast<int> (s.substr (17, 2));
+	_tz_hour = lexical_cast<int> (s.substr (20, 2));
+	_tz_minute = lexical_cast<int> (s.substr (23, 2));
+
+	if (s[19] == '-') {
+		_tz_hour = -_tz_hour;
+	} else if (s[19] != '+') {
+		throw TimeFormatError (s);
+	}
+}
+
+string
+LocalTime::as_string () const
+{
+	char buffer[32];
+	snprintf (
+		buffer, sizeof (buffer),
+		"%04d-%02d-%02dT%02d:%02d:%02d%s%02d:%02d",
+		_year, _month, _day, _hour, _minute, _second, (_tz_hour >= 0 ? "+" : "-"), abs (_tz_hour), _tz_minute
+		);
+	return buffer;
+}