pcsx2/common/ZipHelpers.h

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2022-04-11 12:15:44 +00:00
/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2022 PCSX2 Dev Team
*
* PCSX2 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 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 PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <memory>
#include <optional>
#include <string>
#include <vector>
#include "zip.h"
#include "Console.h"
static inline std::unique_ptr<zip_t, void (*)(zip_t*)> zip_open_managed(const char* filename, int flags, zip_error_t* ze)
{
zip_source_t* zs = zip_source_file_create(filename, 0, 0, ze);
zip_t* zip = nullptr;
if (zs && !(zip = zip_open_from_source(zs, flags, ze)))
{
// have to clean up source
zip_source_free(zs);
}
return std::unique_ptr<zip_t, void (*)(zip_t*)>(zip, [](zip_t* zf) {
if (!zf)
return;
int err = zip_close(zf);
if (err != 0)
{
Console.Error("Failed to close zip file: %d", err);
zip_discard(zf);
}
});
}
static inline std::unique_ptr<zip_t, void (*)(zip_t*)> zip_open_buffer_managed(const void* buffer, size_t size, int flags, int freep, zip_error_t* ze)
{
zip_source_t* zs = zip_source_buffer_create(buffer, size, freep, ze);
zip_t* zip = nullptr;
if (zs && !(zip = zip_open_from_source(zs, flags, ze)))
{
// have to clean up source
zip_source_free(zs);
}
return std::unique_ptr<zip_t, void (*)(zip_t*)>(zip, [](zip_t* zf) {
if (!zf)
return;
int err = zip_close(zf);
if (err != 0)
{
Console.Error("Failed to close zip file: %d", err);
zip_discard(zf);
}
});
}
static inline std::unique_ptr<zip_file_t, int (*)(zip_file_t*)> zip_fopen_managed(zip_t* zip, const char* filename, zip_flags_t flags)
{
return std::unique_ptr<zip_file_t, int (*)(zip_file_t*)>(zip_fopen(zip, filename, flags), zip_fclose);
}
static inline std::unique_ptr<zip_file_t, int (*)(zip_file_t*)> zip_fopen_index_managed(zip_t* zip, zip_uint64_t index, zip_flags_t flags)
{
return std::unique_ptr<zip_file_t, int (*)(zip_file_t*)>(zip_fopen_index(zip, index, flags), zip_fclose);
}
template<typename T>
static inline std::optional<T> ReadFileInZipToContainer(zip_t* zip, const char* name)
{
std::optional<T> ret;
const zip_int64_t file_index = zip_name_locate(zip, name, 0);
if (file_index >= 0)
{
zip_stat_t zst;
if (zip_stat_index(zip, file_index, 0, &zst) == 0)
{
zip_file_t* zf = zip_fopen_index(zip, file_index, 0);
if (zf)
{
ret = T();
ret->resize(static_cast<size_t>(zst.size));
if (zip_fread(zf, ret->data(), ret->size()) != static_cast<zip_int64_t>(ret->size()))
{
ret.reset();
}
}
}
}
return ret;
}
static inline std::optional<std::string> ReadFileInZipToString(zip_t* zip, const char* name)
{
return ReadFileInZipToContainer<std::string>(zip, name);
}
static inline std::optional<std::vector<u8>> ReadBinaryFileInZip(zip_t* zip, const char* name)
{
return ReadFileInZipToContainer<std::vector<u8>>(zip, name);
}