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/*
* libnbt++ - A library for the Minecraft Named Binary Tag format.
* Copyright (C) 2013, 2015 ljfa-ag
*
* This file is part of libnbt++.
*
* libnbt++ is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* libnbt++ 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libnbt++. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tag_list.h"
#include "nbt_tags.h"
#include "io/stream_reader.h"
#include "io/stream_writer.h"
#include <istream>
namespace nbt
{
tag_list::tag_list(std::initializer_list<int8_t> il) { init<tag_byte>(il); }
tag_list::tag_list(std::initializer_list<int16_t> il) { init<tag_short>(il); }
tag_list::tag_list(std::initializer_list<int32_t> il) { init<tag_int>(il); }
tag_list::tag_list(std::initializer_list<int64_t> il) { init<tag_long>(il); }
tag_list::tag_list(std::initializer_list<float> il) { init<tag_float>(il); }
tag_list::tag_list(std::initializer_list<double> il) { init<tag_double>(il); }
tag_list::tag_list(std::initializer_list<std::string> il) { init<tag_string>(il); }
tag_list::tag_list(std::initializer_list<tag_byte_array> il) { init<tag_byte_array>(il); }
tag_list::tag_list(std::initializer_list<tag_list> il) { init<tag_list>(il); }
tag_list::tag_list(std::initializer_list<tag_compound> il) { init<tag_compound>(il); }
tag_list::tag_list(std::initializer_list<tag_int_array> il) { init<tag_int_array>(il); }
tag_list::tag_list(std::initializer_list<value> init)
{
if(init.size() == 0)
el_type_ = tag_type::Null;
else
{
el_type_ = init.begin()->get_type();
for(const value& val: init)
{
if(!val || val.get_type() != el_type_)
throw std::invalid_argument("The values are not all the same type");
}
tags.assign(init.begin(), init.end());
}
}
value& tag_list::at(size_t i)
{
return tags.at(i);
}
const value& tag_list::at(size_t i) const
{
return tags.at(i);
}
void tag_list::set(size_t i, value&& val)
{
if(val.get_type() != el_type_)
throw std::invalid_argument("The tag type does not match the list's content type");
tags.at(i) = std::move(val);
}
void tag_list::push_back(value_initializer&& val)
{
if(!val) //don't allow null values
throw std::invalid_argument("The value must not be null");
if(el_type_ == tag_type::Null) //set content type if undetermined
el_type_ = val.get_type();
else if(el_type_ != val.get_type())
throw std::invalid_argument("The tag type does not match the list's content type");
tags.push_back(std::move(val));
}
void tag_list::reset(tag_type type)
{
clear();
el_type_ = type;
}
void tag_list::read_payload(io::stream_reader& reader)
{
tag_type lt = reader.read_type(true);
int32_t length;
reader.read_num(length);
if(length < 0)
reader.get_istr().setstate(std::ios::failbit);
if(!reader.get_istr())
throw io::input_error("Error reading length of tag_list");
if(lt != tag_type::End)
{
reset(lt);
tags.reserve(length);
for(int32_t i = 0; i < length; ++i)
tags.emplace_back(reader.read_payload(lt));
}
else
{
//In case of tag_end, ignore the length and leave the type undetermined
reset(tag_type::Null);
}
}
void tag_list::write_payload(io::stream_writer& writer) const
{
if(size() > io::stream_writer::max_array_len)
{
writer.get_ostr().setstate(std::ios::failbit);
throw std::length_error("List is too large for NBT");
}
writer.write_type(el_type_ != tag_type::Null
? el_type_
: tag_type::End);
writer.write_num(static_cast<int32_t>(size()));
for(const auto& val: tags)
{
//check if the value is of the correct type
if(val.get_type() != el_type_)
{
writer.get_ostr().setstate(std::ios::failbit);
throw std::logic_error("The tags in the list do not all match the content type");
}
writer.write_payload(val);
}
}
bool operator==(const tag_list& lhs, const tag_list& rhs)
{
return lhs.el_type_ == rhs.el_type_ && lhs.tags == rhs.tags;
}
bool operator!=(const tag_list& lhs, const tag_list& rhs)
{
return !(lhs == rhs);
}
}
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