WiiUPluginLoaderBackend/source/plugin/PluginDataFactory.cpp

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/****************************************************************************
* Copyright (C) 2018 Maschell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
****************************************************************************/
#include <fcntl.h>
#include <sys/stat.h>
#include <dirent.h>
#include <memory>
#include "PluginDataFactory.h"
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#include "../utils/logger.h"
#include "../utils/StringTools.h"
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std::vector<PluginData> PluginDataFactory::loadDir(const std::string &path, MEMHeapHandle heapHandle) {
std::vector<PluginData> result;
struct dirent *dp;
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DIR *dfd = nullptr;
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if (path.empty()) {
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DEBUG_FUNCTION_LINE("Path was empty");
return result;
}
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if ((dfd = opendir(path.c_str())) == nullptr) {
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DEBUG_FUNCTION_LINE("Couldn't open dir %s", path.c_str());
return result;
}
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while ((dp = readdir(dfd)) != nullptr) {
struct stat stbuf{};
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std::string full_file_path = StringTools::strfmt("%s/%s", path.c_str(), dp->d_name);
StringTools::RemoveDoubleSlashs(full_file_path);
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if (stat(full_file_path.c_str(), &stbuf) == -1) {
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DEBUG_FUNCTION_LINE("Unable to stat file: %s", full_file_path.c_str());
continue;
}
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if ((stbuf.st_mode & S_IFMT) == S_IFDIR) { // Skip directories
continue;
} else {
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DEBUG_FUNCTION_LINE("Found file: %s", full_file_path.c_str());
auto pluginData = load(full_file_path, heapHandle);
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if (pluginData) {
result.push_back(pluginData.value());
}
}
}
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if (dfd != nullptr) {
closedir(dfd);
}
return result;
}
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std::optional<PluginData> PluginDataFactory::load(const std::string &filename, MEMHeapHandle heapHandle) {
// Not going to explicitly check these.
// The use of gcount() below will compensate for a failure here.
std::ifstream is(filename, std::ios::binary);
is.seekg(0, std::ios::end);
std::streampos length = is.tellg();
is.seekg(0, std::ios::beg);
// reading into a 0x40 aligned buffer increases reading speed.
char *data = (char *) memalign(0x40, length);
if (!data) {
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is.close();
DEBUG_FUNCTION_LINE("Failed to alloc memory for holding the plugin");
return {};
}
is.read(data, length);
std::vector<uint8_t> result;
result.resize(length);
memcpy(&result[0], data, length);
free(data);
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is.close();
DEBUG_FUNCTION_LINE("Loaded file!");
return load(result, heapHandle);
}
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std::optional<PluginData> PluginDataFactory::load(std::vector<uint8_t> &buffer, MEMHeapHandle heapHandle) {
if (buffer.empty()) {
return std::nullopt;
}
PluginData pluginData(buffer, heapHandle, eMemoryTypes::eMemTypeMEM2);
return pluginData;
}