Small utility collection for dealing with file archives that have dependencies
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/* SPDX-License-Identifier: ISC */
#ifndef COMPRESSOR_H
#define COMPRESSOR_H
#include <stddef.h>
#include <sys/types.h>
#include "pkgformat.h"
typedef struct compressor_stream_t {
ssize_t (*write)(struct compressor_stream_t *stream, const uint8_t *in,
size_t size);
ssize_t (*read)(struct compressor_stream_t *stream, uint8_t *out,
size_t size);
void (*flush)(struct compressor_stream_t *stream);
void (*destroy)(struct compressor_stream_t *stream);
} compressor_stream_t;
typedef struct compressor_t {
struct compressor_t *next;
const char *name;
PKG_COMPRESSION id;
compressor_stream_t *(*compression_stream)(struct compressor_t *cmp);
compressor_stream_t *(*uncompression_stream)(struct compressor_t *cmp);
} compressor_t;
void compressor_register(compressor_t *compressor);
compressor_t *compressor_by_name(const char *name);
compressor_t *compressor_by_id(PKG_COMPRESSION id);
#define REGISTER_COMPRESSOR(compressor) \
static void __attribute__((constructor)) register_##compressor(void) \
{ \
compressor_register((compressor_t *)&compressor); \
}
#endif /* COMPRESSOR_H */