lib.h

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#ifndef MUTT_COMPRESS_LIB_H
#define MUTT_COMPRESS_LIB_H
 
#include <stdlib.h>

typedef void ComprHandle;

struct ComprOps
{
  const char *name; 
  short min_level;  
  short max_level;  

  ComprHandle *(*open)(short level);

  void *(*compress)(ComprHandle *handle, const char *data, size_t dlen, size_t *clen);

  void *(*decompress)(ComprHandle *handle, const char *cbuf, size_t clen, size_t *dlen);

  void (*close)(ComprHandle **ptr);
};
 
extern const struct ComprOps compr_lz4_ops;
extern const struct ComprOps compr_zlib_ops;
extern const struct ComprOps compr_zstd_ops;
 
const struct ComprOps *compress_get_ops(const char *compr);
struct Slist *         compress_list   (void);
 
#endif /* MUTT_COMPRESS_LIB_H */