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/*
Copyright (C) 2012 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.
*/
/** @file src/metadata.cc
* @brief Metadata for writing to the DCP.
*/
#include <sstream>
#include <iomanip>
#include <time.h>
#ifdef LIBDCP_WINDOWS
#include <windows.h>
#endif
#include "metadata.h"
using namespace std;
using namespace libdcp;
MXFMetadata::MXFMetadata ()
: company_name ("libdcp")
, product_name ("libdcp")
, product_version (LIBDCP_VERSION)
{
}
XMLMetadata::XMLMetadata ()
: issuer ("libdcp" LIBDCP_VERSION)
, creator ("libdcp" LIBDCP_VERSION)
{
set_issue_date_now ();
}
void
XMLMetadata::set_issue_date_now ()
{
char buffer[64];
time_t now = time (0);
struct tm* tm = localtime (&now);
strftime (buffer, 64, "%Y-%m-%dT%I:%M:%S", tm);
int offset = 0;
#ifdef LIBDCP_POSIX
offset = tm->tm_gmtoff / 60;
#else
TIME_ZONE_INFORMATION tz;
GetTimeZoneInformation (&tz);
offset = tz.Bias;
#endif
issue_date = string (buffer) + utc_offset_to_string (offset);
}
/** @param b Offset from UTC to local time in minutes.
* @return string of the form e.g. -01:00.
*/
string
XMLMetadata::utc_offset_to_string (int b)
{
bool const negative = (b < 0);
b = negative ? -b : b;
int const hours = b / 60;
int const minutes = b % 60;
stringstream o;
if (negative) {
o << "-";
} else {
o << "+";
}
o << setw(2) << setfill('0') << hours << ":" << setw(2) << setfill('0') << minutes;
return o.str ();
}
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