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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: dk4opt.ctr
*/

/**	@file dk4opt.c The dk4opt module.
*/


#line 315 "dk4opt.ctr"



#include "dk4conf.h"
#include "dk4opt.h"
#include "dk4strd.h"
#include "dk4mem.h"

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




#line 332 "dk4opt.ctr"



/**	Compare two options by short option.
	@param	olp	Left option structure.
	@param	orp	Right option structure.
	@return	Comparison result.
*/
static
int
dk4option_short_compare(const dk4_option_t *olp, const dk4_option_t *orp)
{
  int		back	= 0;
  if ((olp->spec).c > (orp->spec).c) {
    back = 1;
  } else {
    if ((olp->spec).c < (orp->spec).c) {
      back = -1;
    }
  }
  return back;
}



/**	Compare two options by long option.
	@param	olp	Left option structure.
	@param	orp	Right option structure.
	@return	Comparison result.
*/
static
int
dk4option_long_compare(const dk4_option_t *olp, const dk4_option_t *orp)
{
  int		 back = 0;
  if (NULL != (olp->spec).longopt) {
    if (NULL != (orp->spec).longopt) {
      back = dk4str_cmp((olp->spec).longopt, (orp->spec).longopt);
      if (-1 > back) back = -1;
      if ( 1 < back) back =  1;
    } else {
      back = 1;
    }
  } else {
    if (NULL != (orp->spec).longopt) {
      back = -1;
    }
  }
  return back;
}



int
dk4option_compare(const void *l, const void *r, int cr)
{
  const dk4_option_t	*olp;
  const dk4_option_t	*orp;
  const dkChar		*cp;

  int		back = 0;
  if (NULL != l) {
    olp = (const dk4_option_t *)l;
    if (NULL != r) {
      switch (cr) {
        case 3: {
	  cp  = (const dkChar *)r;
	  if (NULL != (olp->spec).longopt) {
	    back = dk4str_cmp((olp->spec).longopt, cp);
	    if (-1 > back) back = -1;
	    if ( 1 < back) back =  1;
	  } else {
	    back = -1;
	  }
	} break;
	case 2: {
	  orp = (const dk4_option_t *)r;
	  back = dk4option_long_compare(olp, orp);
	  if (0 == back) {
	    back = dk4option_short_compare(olp, orp);
	  }
	} break;
	case 1: {
	  cp  = (const dkChar *)r;
	  if ((olp->spec).c > *cp) {
	    back = 1;
	  } else {
	    if ((olp->spec).c < *cp) {
	      back = -1;
	    }
	  }
	} break;
	default: {
	  orp = (const dk4_option_t *)r;
	  back = dk4option_short_compare(olp, orp);
	  if (0 == back) {
	    back = dk4option_long_compare(olp, orp);
	  }
	} break;
      }
    } else {
      back = 1;
    }
  } else {
    if (NULL != r) {
      back = -1;
    }
  }
  return back;
}



void
dk4opt_close(dk4_option_t *optptr)
{
  

#line 449 "dk4opt.ctr"
#if	DK4_USE_ASSERT
	assert(NULL != optptr);
#endif
  if (NULL != optptr) {		

#line 453 "dk4opt.ctr"
    /*
	We can not sanitize the memory for option name and option value
	as the option name is constant and the option value was provided
	by the shell and is owned by the shell.
    */
    (optptr->spec).longopt = NULL;
    (optptr->val).t = NULL;
    dk4mem_free(optptr);
  }
  

#line 463 "dk4opt.ctr"
}



dk4_option_t *
dk4opt_open(const dk4_option_specification_t *spec, dk4_er_t *erp)
{
  dk4_option_t	*back	=	NULL;
#if	DK4_USE_ASSERT
	assert(NULL != spec);
#endif
  if (NULL != spec) {
    if ((NULL != spec->longopt) || (dkT('\0') != spec->c)) {
      back = dk4mem_new(dk4_option_t,1,NULL);
      if (NULL != back) {
	DK4_MEMCPY(&(back->spec),spec,sizeof(dk4_option_specification_t));
	back->found = 0;
	switch ((back->spec).argtype) {
	  case DK4_OPT_ARG_BOOL: {
	    (back->val).b = 0;
	  } break;
	  case DK4_OPT_ARG_SIZE: {
	    (back->val).s = 0;
	  } break;
	  case DK4_OPT_ARG_INT: {
	    (back->val).i = (dk4_im_t)0L;
	  } break;
	  case DK4_OPT_ARG_UNSIGNED: {
	    (back->val).u = (dk4_um_t)0UL;
	  } break;
	  case DK4_OPT_ARG_DOUBLE: {
	    (back->val).d = 0.0;
	  } break;
	  case DK4_OPT_ARG_STRING: {
	    (back->val).t = NULL;
	  } break;
	}
      } else {
        dk4error_set_elsize_nelem(
	  erp, DK4_E_MEMORY_ALLOCATION_FAILED, sizeof(dk4_option_t), 1
	);
      }
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}