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path: root/support/dktools/dk4strmg.c
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/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4strmg.ctr
*/

/**	@file dk4strmg.c The dk4strmg module.
*/


#line 101 "dk4strmg.ctr"

#include "dk4conf.h"

#if DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_ZLIB_H

#include "dk4strm.h"
#include "dk4strmg.h"



void
dk4stream_gzfile_with_close_function(dk4_stream_api_t *api)
{
  gzFile	 fipo;
  int		 res;
#if	DK4_USE_ASSERT
  assert(NULL != api);
#endif
  if (NULL != api) {
    api->res = 0;
    api->sz_out = 0;
    fipo = (gzFile)(api->d);
    if (NULL != fipo) {
      switch (api->cmd) {
        case DK4_STREAM_API_READ: {
	  res = gzread(fipo, api->b, (int)(api->sz_in));
	  if (0 < res) {
	    api->res = 1;
	    api->sz_out = (size_t)res;
	  }
	} break;
	case DK4_STREAM_API_WRITE: {
	  if (0 < api->sz_in) {
	    res = gzwrite(fipo, api->b, (int)(api->sz_in));
	    if (res == (int)(api->sz_in)) {
	      api->res = 1;
	    }
	    if (0 <= res) { api->sz_out = (size_t)res; }
	    else          { api->sz_out = 0; }
	  } else {
	    api->res = 1;
	  }
	} break;
	case DK4_STREAM_API_FLUSH: {
	  if (Z_OK == gzflush(fipo, Z_FULL_FLUSH)) {
	    api->res = 1;
	  }
	} break;
	case DK4_STREAM_API_AT_END: {
	  if (1 == gzeof(fipo)) {
	    api->res = 1;
	  }
	} break;
	case DK4_STREAM_API_CLOSE: {
	  if (Z_OK == gzclose(fipo)) {
	    api->res = 1;
	  }
	} break;
      }
    }
  } else {
  }
}



void
dk4stream_gzfile_function(dk4_stream_api_t *api)
{
#if	DK4_USE_ASSERT
  assert(NULL != api);
#endif
  if (NULL != api) {
    switch (api->cmd) {
      case DK4_STREAM_API_CLOSE: {
        api->res = 1;
      } break;
      default: {
        dk4stream_gzfile_with_close_function(api);
      } break;
    }
  }
}



dk4_stream_t *
dk4stream_open_for_gzfile(
  gzFile	 fipo,
  int		 fl,
  size_t	 ibs,
  size_t	 obs,
  dk4_er_t	*erp
)
{
#if	DK4_USE_ASSERT
  assert(NULL != fipo);
#endif
  return (
    dk4stream_open( (void *)fipo, dk4stream_gzfile_function, fl, ibs, obs, erp )
  );
}



dk4_stream_t *
dk4stream_open_for_gzfile_with_close(
  gzFile	 fipo,
  int		 fl,
  size_t	 ibs,
  size_t	 obs,
  dk4_er_t	*erp
)
{
#if	DK4_USE_ASSERT
  assert(NULL != fipo);
#endif
  return (
    dk4stream_open(
      (void *)fipo, dk4stream_gzfile_with_close_function, fl, ibs, obs, erp
    )
  );
}


#endif