[thirdparty/systemd.git] / src / import / import-compress.h

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

#if HAVE_BZIP2
#include <bzlib.h>
#endif
#include <lzma.h>
#include <sys/types.h>
#include <zlib.h>

#include "macro.h"

typedef enum ImportCompressType {
        IMPORT_COMPRESS_UNKNOWN,
        IMPORT_COMPRESS_UNCOMPRESSED,
        IMPORT_COMPRESS_XZ,
        IMPORT_COMPRESS_GZIP,
        IMPORT_COMPRESS_BZIP2,
        _IMPORT_COMPRESS_TYPE_MAX,
        _IMPORT_COMPRESS_TYPE_INVALID = -1,
} ImportCompressType;

typedef struct ImportCompress {
        ImportCompressType type;
        bool encoding;
        union {
                lzma_stream xz;
                z_stream gzip;
#if HAVE_BZIP2
                bz_stream bzip2;
#endif
        };
} ImportCompress;

typedef int (*ImportCompressCallback)(const void *data, size_t size, void *userdata);

void import_compress_free(ImportCompress *c);

int import_uncompress_detect(ImportCompress *c, const void *data, size_t size);
int import_uncompress(ImportCompress *c, const void *data, size_t size, ImportCompressCallback callback, void *userdata);

int import_compress_init(ImportCompress *c, ImportCompressType t);
int import_compress(ImportCompress *c, const void *data, size_t size, void **buffer, size_t *buffer_size, size_t *buffer_allocated);
int import_compress_finish(ImportCompress *c, void **buffer, size_t *buffer_size, size_t *buffer_allocated);

const char* import_compress_type_to_string(ImportCompressType t) _const_;
ImportCompressType import_compress_type_from_string(const char *s) _pure_;
Commit	Line	Data
	1	/* SPDX-License-Identifier: LGPL-2.1+ */
	2	#pragma once
	3
	4	#if HAVE_BZIP2
	5	#include <bzlib.h>
	6	#endif
	7	#include <lzma.h>
	8	#include <sys/types.h>
	9	#include <zlib.h>
	10
	11	#include "macro.h"
	12
	13	typedef enum ImportCompressType {
	14	IMPORT_COMPRESS_UNKNOWN,
	15	IMPORT_COMPRESS_UNCOMPRESSED,
	16	IMPORT_COMPRESS_XZ,
	17	IMPORT_COMPRESS_GZIP,
	18	IMPORT_COMPRESS_BZIP2,
	19	_IMPORT_COMPRESS_TYPE_MAX,
	20	_IMPORT_COMPRESS_TYPE_INVALID = -1,
	21	} ImportCompressType;
	22
	23	typedef struct ImportCompress {
	24	ImportCompressType type;
	25	bool encoding;
	26	union {
	27	lzma_stream xz;
	28	z_stream gzip;
	29	#if HAVE_BZIP2
	30	bz_stream bzip2;
	31	#endif
	32	};
	33	} ImportCompress;
	34
	35	typedef int (ImportCompressCallback)(const void data, size_t size, void *userdata);
	36
	37	void import_compress_free(ImportCompress *c);
	38
	39	int import_uncompress_detect(ImportCompress c, const void data, size_t size);
	40	int import_uncompress(ImportCompress c, const void data, size_t size, ImportCompressCallback callback, void *userdata);
	41
	42	int import_compress_init(ImportCompress *c, ImportCompressType t);
	43	int import_compress(ImportCompress c, const void data, size_t size, void *buffer, size_t buffer_size, size_t *buffer_allocated);
	44	int import_compress_finish(ImportCompress c, void buffer, size_t buffer_size, size_t *buffer_allocated);
	45
	46	const char* import_compress_type_to_string(ImportCompressType t) _const_;
	47	ImportCompressType import_compress_type_from_string(const char *s) _pure_;