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// license:BSD-3-Clause
// copyright-holders:Aaron Giles, Vas Crabb
/***************************************************************************
unzip.h
archive file management.
***************************************************************************/
#pragma once
#ifndef MAME_LIB_UTIL_UNZIP_H
#define MAME_LIB_UTIL_UNZIP_H
#include "osdcore.h"
#include <chrono>
#include <cstdint>
#include <memory>
#include <string>
namespace util {
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// describes an open archive file
class archive_file
{
public:
// Error types
enum class error
{
NONE = 0,
OUT_OF_MEMORY,
FILE_ERROR,
BAD_SIGNATURE,
DECOMPRESS_ERROR,
FILE_TRUNCATED,
FILE_CORRUPT,
UNSUPPORTED,
BUFFER_TOO_SMALL
};
typedef std::unique_ptr<archive_file> ptr;
/* ----- archive file access ----- */
// open a ZIP file and parse its central directory
static error open_zip(const std::string &filename, ptr &zip);
// open a 7Z file and parse its central directory
static error open_7z(const std::string &filename, ptr &result);
// close an archive file (may actually be left open due to caching)
virtual ~archive_file();
// clear out all open files from the cache
static void cache_clear();
/* ----- contained file access ----- */
// iterating over files - returns negative on reaching end
virtual int first_file() = 0;
virtual int next_file() = 0;
// find a file index by crc, filename or both - returns non-negative on match
virtual int search(std::uint32_t crc) = 0;
virtual int search(const std::string &filename, bool partialpath) = 0;
virtual int search(std::uint32_t crc, const std::string &filename, bool partialpath) = 0;
// information on most recently found file
virtual bool current_is_directory() const = 0;
virtual const std::string ¤t_name() const = 0;
virtual std::uint64_t current_uncompressed_length() const = 0;
virtual std::chrono::system_clock::time_point current_last_modified() const = 0;
virtual std::uint32_t current_crc() const = 0;
// decompress the most recently found file in the ZIP
virtual error decompress(void *buffer, std::uint32_t length) = 0;
};
} // namespace util
#endif // MAME_LIB_UTIL_UNZIP_H
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