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winix/winixd/core/timezones.cpp

208 lines
4.4 KiB

/*
* This file is a part of Winix
* and is distributed under the 2-Clause BSD licence.
* Author: Tomasz Sowa <t.sowa@ttmath.org>
*/
/*
* Copyright (c) 2012-2021, Tomasz Sowa
* 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 "timezones.h"
#include "misc.h"
#include "log.h"
namespace Winix
{
TimeZones::TimeZones()
{
Clear();
}
void TimeZones::Clear()
{
zone_tab.clear();
for(size_t i=0 ; i<zone_indices.size() ; ++i)
zone_indices[i] = size_t(-1);
}
void TimeZones::SetTimeZoneMaxId(size_t max_id)
{
if( max_id > 1000 )
{
max_id = 1000;
log << log1 << "TZ: time_zone_max_id is too big (changed to 1000)" << logend;
}
size_t old_size = zone_indices.size();
zone_indices.resize(max_id + 1);
for(size_t i=old_size ; i<zone_indices.size() ; ++i)
zone_indices[i] = size_t(-1);
}
bool TimeZones::HasZone(size_t zone_id)
{
if( zone_id < zone_indices.size() )
return zone_indices[zone_id] < zone_tab.size();
return false;
}
TimeZone * TimeZones::GetZone(size_t zone_id)
{
if( zone_id < zone_indices.size() )
{
size_t index = zone_indices[zone_id];
if( index < zone_tab.size() )
return &zone_tab[index];
}
return 0;
}
TimeZone * TimeZones::GetZoneByIndex(size_t zone_index)
{
if( zone_index < zone_tab.size() )
return &zone_tab[zone_index];
return 0;
}
size_t TimeZones::Size() const
{
return zone_tab.size();
}
bool TimeZones::Empty() const
{
return zone_tab.empty();
}
void TimeZones::ParseZones()
{
pt::Space::TableType * timezones_table = temp_space.get_table(L"timezones");
if( timezones_table )
{
for(pt::Space * zone : *timezones_table)
{
temp_zone.Clear();
if( temp_zone.SetTz(*zone) )
{
if( !HasZone(temp_zone.id) )
{
if( temp_zone.id < zone_indices.size() )
{
zone_tab.push_back(temp_zone);
zone_indices[temp_zone.id] = zone_tab.size() - 1;
}
else
{
log << log1 << "Tz: zone: " << temp_zone.name << " has too big id: "
<< temp_zone.id << " (skipping)" << logend;
}
}
else
{
log << log1 << "Tz: zone with id: " << temp_zone.id
<< " already exists (skipping)" << logend;
}
}
else
{
log << log1 << "System: problem with reading time zone info from time zone: "
<< zone->to_wstr(L"name") << " (skipping) " << logend;
}
}
}
}
// !! IMPROVE ME
// in the future we do not have to read the whole file
// just space by space (not implemented in Space at the moment)
bool TimeZones::ReadTimeZones(const wchar_t * path)
{
zone_tab.clear();
pt::SpaceParser::Status status = parser.parse_space_file(path, temp_space);
if( status == pt::SpaceParser::ok )
{
ParseZones();
log << log2 << "Tz: time zones loaded, there are " << zone_tab.size() << " zones" << logend;
}
else
if( status == pt::SpaceParser::syntax_error )
{
log << log1 << "TZ: error in time zone file, line: " << parser.get_last_parsed_line() << logend;
}
else
if( status == pt::SpaceParser::cant_open_file )
{
log << log1 << "TZ: I cannot open the time zone file: " << path << logend;
}
temp_space.clear();
return status == pt::SpaceParser::ok;
}
bool TimeZones::ReadTimeZones(const std::wstring & path)
{
return ReadTimeZones(path.c_str());
}
} // namespace Winix