diff options
Diffstat (limited to 'depends/libnbtplusplus/src/tag_list.cpp')
-rw-r--r-- | depends/libnbtplusplus/src/tag_list.cpp | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/depends/libnbtplusplus/src/tag_list.cpp b/depends/libnbtplusplus/src/tag_list.cpp new file mode 100644 index 00000000..67a3d4c1 --- /dev/null +++ b/depends/libnbtplusplus/src/tag_list.cpp @@ -0,0 +1,150 @@ +/* + * 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); +} + +} |