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Windows: Get default timezone if there's no default key.

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Windows XP doesn't provide a default key, just the TZI returned by
GetDefaultTimeZone(), so use that instead of throwing if there's no
default key in the registry. If GetDefaultTimeZone() files, throw: We
can't safely read the database without a timezone.
This commit is contained in:
John Ralls 2015-07-23 17:31:49 -07:00
parent 54c9e836d4
commit 5cc99806d8
1 changed files with 23 additions and 2 deletions
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25
src/libqof/qof/gnc-timezone.cpp
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@ -27,6 +27,10 @@
#include <istream>
#include <algorithm>
#include <boost/date_time/gregorian/gregorian.hpp>
#if PLATFORM(WINDOWS)
#include <codecvt>
#endif
using namespace gnc::date;
using duration = boost::posix_time::time_duration;
@ -226,6 +230,21 @@ TimeZoneProvider::load_windows_classic_tz (HKEY key, time_zone_names names)
RegCloseKey (key);
}
void
TimeZoneProvider::load_windows_default_tz()
{
TIME_ZONE_INFORMATION tzi {};
if (GetTimeZoneInformation (&tzi) == TIME_ZONE_INVALID)
throw std::system_error("No default time zone.");
RegTZI regtzi { tzi.Bias, tzi.StandardBias, tzi.DaylightBias,
tzi.StandardDate, tzi.DaylightDate };
std::wstring_convert<std::codecvt_utf8_utf16<char16_t>,char16_t> conversion;
auto std_name = conversion.to_bytes(tzi.StandardName);
auto dlt_name = conversion.to_bytes(tzi.DaylightName);
time_zone_names names (std_name, std_name, dlt_name, dlt_name);
zone_vector.push_back(std::make_pair(0, zone_from_regtzi(regtzi, names)));
}
TimeZoneProvider::TimeZoneProvider (const std::string& identifier) :
zone_vector ()
{
@ -237,8 +256,10 @@ TimeZoneProvider::TimeZoneProvider (const std::string& identifier) :
identifier);
if (key_name.empty())
throw std::invalid_argument ("No identifier or default tzname.");
{
load_windows_default_tz();
return;
}
std::string subkey = reg_key + key_name;
if (RegOpenKeyExA (HKEY_LOCAL_MACHINE, subkey.c_str(), 0,
KEY_QUERY_VALUE, &key) != ERROR_SUCCESS)