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#include "config_parse.hpp"
// config_parse.cpp - Framework for per-server config parsers.
//
// Copyright © 2014 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
#include <algorithm>
#include "../strings/xstring.hpp"
#include "../strings/zstring.hpp"
#include "../io/cxxstdio.hpp"
#include "../io/extract.hpp"
#include "../io/line.hpp"
#include "version.hpp"
#include "../poison.hpp"
namespace tmwa
{
bool is_comment(XString line)
{
return not line or line.startswith("//"_s);
}
template<class ZS>
inline
bool config_split_impl(ZS line, XString *key, ZS *value)
{
// unconditionally fail if line contains control characters
if (std::find_if(line.begin(), line.end(),
[](unsigned char c) { return c < ' '; }
) != line.end())
return false;
// try to find a colon, fail if not found
typename ZS::iterator colon = std::find(line.begin(), line.end(), ':');
if (colon == line.end())
return false;
*key = line.xislice_h(colon).strip();
// move past the colon and any spaces
++colon;
*value = line.xislice_t(colon).lstrip();
return true;
}
// eventually this should go away
bool config_split(ZString line, XString *key, ZString *value)
{
return config_split_impl(line, key, value);
}
// and use this instead
bool config_split(XString line, XString *key, XString *value)
{
return config_split_impl(line, key, value);
}
/// Master config parser. This handles 'import' and 'version-ge' etc.
/// Then it defers to the inferior parser for a line it does not understand.
bool load_config_file(ZString filename, ConfigItemParser slave)
{
io::LineReader in(filename);
if (!in.is_open())
{
PRINTF("Unable to open file: %s\n"_fmt, filename);
return false;
}
io::Line line;
bool rv = true;
while (in.read_line(line))
{
if (is_comment(line.text))
continue;
XString key;
ZString value;
if (!config_split(line.text, &key, &value))
{
line.error("Bad config line"_s);
rv = false;
continue;
}
if (key == "import"_s)
{
rv &= load_config_file(value, slave);
continue;
}
else if (key == "version-lt"_s)
{
Version vers;
if (!extract(value, &vers))
{
rv = false;
continue;
}
if (CURRENT_VERSION < vers)
continue;
break;
}
else if (key == "version-le"_s)
{
Version vers;
if (!extract(value, &vers))
{
rv = false;
continue;
}
if (CURRENT_VERSION <= vers)
continue;
break;
}
else if (key == "version-gt"_s)
{
Version vers;
if (!extract(value, &vers))
{
rv = false;
continue;
}
if (CURRENT_VERSION > vers)
continue;
break;
}
else if (key == "version-ge"_s)
{
Version vers;
if (!extract(value, &vers))
{
rv = false;
continue;
}
if (CURRENT_VERSION >= vers)
continue;
break;
}
else if (!slave(key, value))
{
line.error("Bad config key or value"_s);
rv = false;
continue;
}
// nothing to see here, move along
}
return rv;
}
} // namespace tmwa
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