file-desc.cpp
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file-desc.cpp
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	/*
	* This file is part of libkazv.
	* SPDX-FileCopyrightText: 2021 Tusooa Zhu <tusooa@kazv.moe>
	* SPDX-License-Identifier: AGPL-3.0-or-later
	*/


	#include "libkazv-config.hpp"

	#include <fstream>

	#include "file-desc.hpp"
	#include "debug.hpp"

	namespace Kazv
	{
	FileProvider FileDesc::provider(const FileInterface &fh) const
	{
	if (m_inMemory) {
	return FileProvider(DumbFileProvider(m_content));
	}
	return fh.getProviderFor(*this);
	}

	DumbFileProvider DumbFileInterface::getProviderFor(FileDesc desc) const
	{
	using CharT = char;
	auto nameOpt = desc.name();
	kzo.base.dbg() << "DumbFileInterface::getProviderFor()" << std::endl;
	if (! nameOpt) { // should not happen
	kzo.base.dbg() << "No name provided, skip" << std::endl;
	return DumbFileProvider{FileContent{}};
	}

	auto stream = std::ifstream(nameOpt.value(), std::ios_base::binary);
	if (! stream) {
	kzo.base.dbg() << "Cannot open file, skip" << std::endl;
	return DumbFileProvider{FileContent{}};
	}
	auto content = FileContent(std::istreambuf_iterator<CharT>(stream),
	std::istreambuf_iterator<CharT>());
	return DumbFileProvider{std::move(content)};
	}

	bool FileDesc::operator==(const FileDesc &that) const
	{
	return m_inMemory == that.m_inMemory
	&& m_content == that.m_content
	&& m_name == that.m_name
	&& m_contentType == that.m_contentType;
	}
	}