RmlUi/Source/Core/FileInterface.cpp

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019-2023 The RmlUi Team, and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#include "../../Include/RmlUi/Core/FileInterface.h"
#include "../../Include/RmlUi/Core/Log.h"

namespace Rml {

FileInterface::FileInterface() {}

FileInterface::~FileInterface() {}

size_t FileInterface::Length(FileHandle file)
{
	size_t current_position = Tell(file);
	Seek(file, 0, SEEK_END);
	size_t length = Tell(file);
	Seek(file, (long)current_position, SEEK_SET);
	return length;
}

bool FileInterface::LoadFile(const String& path, String& out_data)
{
	FileHandle handle = Open(path);
	if (!handle)
		return false;

	const size_t length = Length(handle);

	out_data = String(length, 0);

	const size_t read_length = Read(&out_data[0], length, handle);

	if (length != read_length)
	{
		Log::Message(Log::LT_WARNING, "Could only read %zu of %zu bytes from file %s", read_length, length, path.c_str());
	}

	Close(handle);

	return true;
}

} // namespace Rml