85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
// IACore-OSS; The Core Library for All IA Open Source Projects
|
|
// Copyright (C) 2026 IAS (ias@iasoft.dev)
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include <IACore/FileOps.hpp>
|
|
#include <IACore/StreamReader.hpp>
|
|
|
|
namespace IACore {
|
|
auto StreamReader::create_from_file(Ref<Path> path) -> Result<StreamReader> {
|
|
Mut<usize> size = 0;
|
|
|
|
const u8 *ptr = AU_TRY(FileOps::map_file(path, size));
|
|
|
|
Mut<StreamReader> reader(Span<const u8>(ptr, size));
|
|
reader.m_storage_type = StorageType::OwningMmap;
|
|
|
|
return reader;
|
|
}
|
|
|
|
StreamReader::StreamReader(ForwardRef<Vec<u8>> data)
|
|
: m_owning_vector(std::move(data)),
|
|
m_storage_type(StorageType::OwningVector) {
|
|
m_data = m_owning_vector.data();
|
|
m_data_size = m_owning_vector.size();
|
|
}
|
|
|
|
StreamReader::StreamReader(const Span<const u8> data)
|
|
: m_data(data.data()), m_data_size(data.size()),
|
|
m_storage_type(StorageType::NonOwning) {}
|
|
|
|
StreamReader::StreamReader(ForwardRef<StreamReader> other)
|
|
: m_data(other.m_data), m_cursor(other.m_cursor),
|
|
m_data_size(other.m_data_size),
|
|
m_owning_vector(std::move(other.m_owning_vector)),
|
|
m_storage_type(other.m_storage_type) {
|
|
other.m_storage_type = StorageType::NonOwning;
|
|
other.m_data = {};
|
|
other.m_data_size = 0;
|
|
|
|
if (m_storage_type == StorageType::OwningVector) {
|
|
m_data = m_owning_vector.data();
|
|
}
|
|
}
|
|
|
|
auto StreamReader::operator=(ForwardRef<StreamReader> other)
|
|
-> MutRef<StreamReader> {
|
|
if (this != &other) {
|
|
if (m_storage_type == StorageType::OwningMmap) {
|
|
FileOps::unmap_file(m_data);
|
|
}
|
|
|
|
m_data = other.m_data;
|
|
m_cursor = other.m_cursor;
|
|
m_data_size = other.m_data_size;
|
|
m_owning_vector = std::move(other.m_owning_vector);
|
|
m_storage_type = other.m_storage_type;
|
|
|
|
if (m_storage_type == StorageType::OwningVector) {
|
|
m_data = m_owning_vector.data();
|
|
}
|
|
|
|
other.m_storage_type = StorageType::NonOwning;
|
|
other.m_data = {};
|
|
other.m_data_size = 0;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
StreamReader::~StreamReader() {
|
|
if (m_storage_type == StorageType::OwningMmap) {
|
|
FileOps::unmap_file(m_data);
|
|
}
|
|
}
|
|
} // namespace IACore
|