/*
Copyright (C) 2004-2021,2022 John E. Davis

This file is part of the S-Lang Library.

The S-Lang Library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The S-Lang Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
*/
#include "slinclud.h"
#include <ctype.h>
#include <string.h>
#include <stdlib.h>

#include "slang.h"
#include "_slang.h"

#define DEFINE_PSLWC_CLASSIFICATION_TABLE
#include "slischar.h"

#define MODE_VARIABLE _pSLinterp_UTF8_Mode

int SLwchar_islower (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_LOWER;

   if (ch < 256)
     return islower ((unsigned char) ch);

   return 0;
}

int SLwchar_isupper (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_UPPER;

   if (ch < 256)
     return isupper ((unsigned char) ch);

   return 0;
}

int SLwchar_isalpha (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_ALPHA;

   if (ch < 256)
     return isalpha ((unsigned char) ch);

   return 0;
}

int SLwchar_isxdigit (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_XDIGIT;

   if (ch < 256)
     return isxdigit ((unsigned char) ch);

   return 0;
}

int SLwchar_isspace (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_SPACE;

   if (ch < 256)
     return isspace ((unsigned char) ch);

   return 0;
}

int SLwchar_isblank (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_BLANK;

   return (ch == ' ') || (ch == '\t');
}

int SLwchar_iscntrl (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_CNTRL;

   if (ch < 256)
     return iscntrl ((unsigned char) ch);

   return 0;
}

int SLwchar_isprint (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     return SL_CLASSIFICATION_LOOKUP(ch) & SLCHARCLASS_PRINT;

   if (ch < 256)
     return isprint ((unsigned char) ch);

   return 0;
}

/* The following are derived quantities */
#define DIGITCLASS(x) (((x)&SLCHARCLASS_XDIGIT)&&!((x)&SLCHARCLASS_ALPHA))
#define GRAPHCLASS(x) (((x)&SLCHARCLASS_PRINT)&&!((x)&SLCHARCLASS_SPACE))
#define ALNUMCLASS(x) ((x)&(SLCHARCLASS_ALPHA|SLCHARCLASS_XDIGIT))
#define PUNCTCLASS(x) (!ALNUMCLASS(x) && GRAPHCLASS(x))

int SLwchar_isdigit (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     {
	unsigned char t = SL_CLASSIFICATION_LOOKUP(ch);
	return DIGITCLASS(t);
     }

   if ((unsigned)ch < 256)
     return isdigit ((unsigned char) ch);

   return 0;
}

int SLwchar_isgraph (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     {
	unsigned char t = SL_CLASSIFICATION_LOOKUP(ch);
	return GRAPHCLASS(t);
     }

   if ((unsigned)ch < 256)
     return isgraph ((unsigned char) ch);

   return 0;
}

int SLwchar_isalnum (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     {
	unsigned char t = SL_CLASSIFICATION_LOOKUP(ch);
	return ALNUMCLASS(t);
     }

   if ((unsigned)ch < 256)
     return isalnum ((unsigned char) ch);

   return 0;
}

int SLwchar_ispunct (SLwchar_Type ch)
{
   if (MODE_VARIABLE)
     {
	unsigned char t = SL_CLASSIFICATION_LOOKUP(ch);
	return PUNCTCLASS(t);
     }

   if ((unsigned)ch < 256)
     return ispunct ((unsigned char) ch);

   return 0;
}

