src/zstream.h

   1 /*
   2  * Copyright (C) the libgit2 contributors. All rights reserved.
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #ifndef INCLUDE_zstream_h__
   8 #define INCLUDE_zstream_h__
   9
  10 #include "common.h"
  11
  12 #include <zlib.h>
  13
  14 #include "buffer.h"
  15
  16 typedef enum {
  17         GIT_ZSTREAM_INFLATE,
  18         GIT_ZSTREAM_DEFLATE,
  19 } git_zstream_t;
  20
  21 typedef struct {
  22         z_stream z;
  23         git_zstream_t type;
  24         const char *in;
  25         size_t in_len;
  26         int flush;
  27         int zerr;
  28 } git_zstream;
  29
  30 #define GIT_ZSTREAM_INIT {{0}}
  31
  32 int git_zstream_init(git_zstream *zstream, git_zstream_t type);
  33 void git_zstream_free(git_zstream *zstream);
  34
  35 int git_zstream_set_input(git_zstream *zstream, const void *in, size_t in_len);
  36
  37 size_t git_zstream_suggest_output_len(git_zstream *zstream);
  38
  39 /* get as much output as is available in the input buffer */
  40 int git_zstream_get_output_chunk(
  41         void *out, size_t *out_len, git_zstream *zstream);
  42
  43 /* get all the output from the entire input buffer */
  44 int git_zstream_get_output(void *out, size_t *out_len, git_zstream *zstream);
  45
  46 bool git_zstream_done(git_zstream *zstream);
  47 bool git_zstream_eos(git_zstream *zstream);
  48
  49 void git_zstream_reset(git_zstream *zstream);
  50
  51 int git_zstream_deflatebuf(git_buf *out, const void *in, size_t in_len);
  52 int git_zstream_inflatebuf(git_buf *out, const void *in, size_t in_len);
  53
  54 #endif