src/lib/compress/compress_zlib.h

   1 /* Copyright (c) 2003, Roger Dingledine
   2  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   3  * Copyright (c) 2007-2021, The Tor Project, Inc. */
   4 /* See LICENSE for licensing information */
   5
   6 /**
   7  * \file compress_zlib.h
   8  * \brief Header for compress_zlib.c
   9  **/
  10
  11 #ifndef TOR_COMPRESS_ZLIB_H
  12 #define TOR_COMPRESS_ZLIB_H
  13
  14 int tor_zlib_method_supported(void);
  15
  16 const char *tor_zlib_get_version_str(void);
  17
  18 const char *tor_zlib_get_header_version_str(void);
  19
  20 /** Internal state for an incremental zlib/gzip compression/decompression. */
  21 typedef struct tor_zlib_compress_state_t tor_zlib_compress_state_t;
  22
  23 tor_zlib_compress_state_t *
  24 tor_zlib_compress_new(int compress,
  25                       compress_method_t method,
  26                       compression_level_t compression_level);
  27
  28 tor_compress_output_t
  29 tor_zlib_compress_process(tor_zlib_compress_state_t *state,
  30                           char **out, size_t *out_len,
  31                           const char **in, size_t *in_len,
  32                           int finish);
  33
  34 void tor_zlib_compress_free_(tor_zlib_compress_state_t *state);
  35 #define tor_zlib_compress_free(st)                      \
  36   FREE_AND_NULL(tor_zlib_compress_state_t,   \
  37                            tor_zlib_compress_free_, (st))
  38
  39 size_t tor_zlib_compress_state_size(const tor_zlib_compress_state_t *state);
  40
  41 size_t tor_zlib_get_total_allocation(void);
  42
  43 void tor_zlib_init(void);
  44
  45 #endif /* !defined(TOR_COMPRESS_ZLIB_H) */
  46