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/*
* Copyright 2003-2021 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "Data.hxx"
#include "Parser.hxx"
#include "fs/AllocatedPath.hxx"
#include "util/RuntimeError.hxx"
#include "util/StringAPI.hxx"
#include <stdlib.h>
void
ConfigData::Clear()
{
for (auto &i : params)
i.clear();
for (auto &i : blocks)
i.clear();
}
template<typename T>
gcc_pure
static auto
FindLast(const std::forward_list<T> &list)
{
auto i = list.before_begin();
while (std::next(i) != list.end())
++i;
return i;
}
template<typename T>
static auto
Append(std::forward_list<T> &list, T &&src)
{
return list.emplace_after(FindLast(list), std::forward<T>(src));
}
void
ConfigData::AddParam(ConfigOption option,
ConfigParam &¶m) noexcept
{
Append(GetParamList(option), std::move(param));
}
const char *
ConfigData::GetString(ConfigOption option,
const char *default_value) const noexcept
{
const auto *param = GetParam(option);
if (param == nullptr)
return default_value;
return param->value.c_str();
}
AllocatedPath
ConfigData::GetPath(ConfigOption option) const
{
const auto *param = GetParam(option);
if (param == nullptr)
return nullptr;
return param->GetPath();
}
unsigned
ConfigData::GetUnsigned(ConfigOption option, unsigned default_value) const
{
return With(option, [default_value](const char *s){
return s != nullptr
? ParseUnsigned(s)
: default_value;
});
}
unsigned
ConfigData::GetPositive(ConfigOption option, unsigned default_value) const
{
return With(option, [default_value](const char *s){
return s != nullptr
? ParsePositive(s)
: default_value;
});
}
std::chrono::steady_clock::duration
ConfigData::GetUnsigned(ConfigOption option,
std::chrono::steady_clock::duration default_value) const
{
return With(option, [default_value](const char *s){
if (s == nullptr)
return default_value;
auto value = ParseDuration(s);
if (value < std::chrono::steady_clock::duration{})
throw std::runtime_error("Value must not be negative");
return value;
});
}
std::chrono::steady_clock::duration
ConfigData::GetPositive(ConfigOption option,
std::chrono::steady_clock::duration default_value) const
{
return With(option, [default_value](const char *s){
if (s == nullptr)
return default_value;
auto value = ParseDuration(s);
if (value <= std::chrono::steady_clock::duration{})
throw std::runtime_error("Value must be positive");
return value;
});
}
bool
ConfigData::GetBool(ConfigOption option, bool default_value) const
{
return With(option, [default_value](const char *s){
return s != nullptr
? ParseBool(s)
: default_value;
});
}
ConfigBlock &
ConfigData::AddBlock(ConfigBlockOption option,
ConfigBlock &&block) noexcept
{
return *Append(GetBlockList(option), std::move(block));
}
const ConfigBlock *
ConfigData::FindBlock(ConfigBlockOption option,
const char *key, const char *value) const
{
for (const auto &block : GetBlockList(option)) {
const char *value2 = block.GetBlockValue(key);
if (value2 == nullptr)
throw FormatRuntimeError("block without '%s' in line %d",
key, block.line);
if (StringIsEqual(value2, value))
return █
}
return nullptr;
}
ConfigBlock &
ConfigData::MakeBlock(ConfigBlockOption option,
const char *key, const char *value)
{
auto *block = const_cast<ConfigBlock *>(FindBlock(option, key, value));
if (block == nullptr) {
ConfigBlock new_block;
new_block.AddBlockParam(key, value);
block = &AddBlock(option, std::move(new_block));
}
return *block;
}
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