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path: root/support/dktools/dk4bitsh.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: dk4bitsh.ctr
*/

/**	@file dk4bitsh.c The dk4bitsh module.
*/


#line 104 "dk4bitsh.ctr"

#include "dk4conf.h"

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

#include "dk4bitsh.h"
#include "dk4edstm.h"
#include "dk4mem.h"





#line 121 "dk4bitsh.ctr"




void
dk4bit_shift_init(dk4_bit_shift_t *bs, dk4_er_t *erp)
{
  

#line 129 "dk4bitsh.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != bs);
#endif
  if (NULL != bs) {
    DK4_MEMRES(bs, sizeof(dk4_bit_shift_t));
    bs->pos = 0;
    bs->obyte = 0x00;
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  

#line 140 "dk4bitsh.ctr"
}



int
dk4bit_shift_add(dk4_bit_shift_t *bs, int bit, dk4_er_t *erp)
{
  int		 back	=	DK4_EDSTM_ERROR;
  

#line 149 "dk4bitsh.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != bs);
#endif
  if (NULL != bs) {
    back = DK4_EDSTM_ACCEPT;
    switch (bs->pos) {
      case 0: {
        if (0 != bit) { bs->obyte = 0x80; } else { bs->obyte = 0x00; }
	bs->pos = 1;
      } break;
      case 1: {
        if (0 != bit) { bs->obyte |= 0x40; }
	bs->pos = 2;
      } break;
      case 2: {
        if (0 != bit) { bs->obyte |= 0x20; }
	bs->pos = 3;
      } break;
      case 3: {
        if (0 != bit) { bs->obyte |= 0x10; }
	bs->pos = 4;
      } break;
      case 4: {
        if (0 != bit) { bs->obyte |= 0x08; }
	bs->pos = 5;
      } break;
      case 5: {
        if (0 != bit) { bs->obyte |= 0x04; }
	bs->pos = 6;
      } break;
      case 6: {
        if (0 != bit) { bs->obyte |= 0x02; }
	bs->pos = 7;
      } break;
      case 7: {
        if (0 != bit) { bs->obyte |= 0x01; }
	bs->pos = 0;
	back = DK4_EDSTM_FINISHED; 

#line 187 "dk4bitsh.ctr"
      } break;
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  

#line 193 "dk4bitsh.ctr"
  return back;
}



int
dk4bit_shift_finish(dk4_bit_shift_t *bs, dk4_er_t *erp)
{
  int		 back	=	DK4_EDSTM_ERROR;
  

#line 203 "dk4bitsh.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != bs);
#endif
  if (NULL != bs) {
    if (0 != bs->pos) {
      back = DK4_EDSTM_FINISHED;
    } else {
      back = DK4_EDSTM_ACCEPT;	

#line 211 "dk4bitsh.ctr"
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  

#line 216 "dk4bitsh.ctr"
  return back;
}



unsigned char
dk4bit_shift_output(dk4_bit_shift_t const *bs, dk4_er_t *erp)
{
  unsigned char	 back;
  

#line 226 "dk4bitsh.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != bs);
#endif
  if (NULL != bs) {
    back = bs->obyte;
  } else {
    back = 0x00;
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  

#line 236 "dk4bitsh.ctr"
  return back;
}