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/*** type.c *******************************************************************
**
** This file is part of BibTool.
** It is distributed under the GNU General Public License.
** See the file COPYING for details.
**
** (c) 1996-2017 Gerd Neugebauer
**
** Net: gene@gerd-neugebauer.de
**
** This program 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, or (at your option)
** any later version.
**
** This program 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 program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**-----------------------------------------------------------------------------
**
** Description:
** This file contains functions to support a separate treatment of
** character types. The normal functions and macros in |ctype.h| are
** replaced by those in |type.h|. This file contains an initialization
** function which is required for the macros in |type.h| to work
** properly.
**
** See also the documentation of the header file |type.h| for
** further information.
**
******************************************************************************/
/*****************************************************************************/
/* Internal Programs */
/*===========================================================================*/
#define INIT_TYPE
#include <bibtool/general.h>
#include <bibtool/type.h>
/*****************************************************************************/
/* External Programs */
/*===========================================================================*/
/*---------------------------------------------------------------------------*/
#define to_lower(C) ((C) + 'a'-'A')
#define to_upper(C) ((C) + 'A'-'a')
/*-----------------------------------------------------------------------------
** Function: init_type()
** Purpose: This is the initialization routine for this file. This
** has to be called before some of the macros in |type.h|
** will work as described. It does no harm to call this
** initialization more than once. It just takes some time.
**
** Note that this function is for internal purposes
** only. The normal user should call |init_bibtool()|
** instead.
** Arguments: none
** Returns: nothing
**___________________________________________________ */
void init_type() /* */
{ register unsigned short int i; /* */
/* */
for ( i = 0; i < 256; ++i ) /* */
{ trans_lower[i] = is_upper(i) ? to_lower(i) : i;/* */
trans_upper[i] = is_lower(i) ? to_upper(i) : i;/* */
trans_id[i] = i; /* */
} /* */
} /*------------------------*/
/*-----------------------------------------------------------------------------
** Function: add_word_sep()
** Type: void
** Purpose:
** Mark some characters as word separator.
** Arguments:
** s the allowed word separator characters
** Returns: nothing
**___________________________________________________ */
void add_word_sep(s) /* */
register String s; /* */
{ /* */
if ( s == StringNULL ) return; /* */
for ( ; *s ; s++ ) /* */
{ type__allowed[*s] |= T__WordSep; } /* */
} /*------------------------*/
#ifdef DEBUG
#include <assert.h>
#endif
/*-----------------------------------------------------------------------------
** Function: case_eq()
** Purpose: Compare two strings ignoring cases. If the strings are
** identical up to differences in case then this function
** returns |true|.
** Arguments:
** s First string to consider.
** t Second string to consider.
** Returns: |true| iff the strings are equal.
**___________________________________________________ */
bool case_eq(s, t) /* */
register String s; /* */
register String t; /* */
{ /* */
#ifdef DEBUG
assert(s != NULL); /* */
assert(t != NULL); /* */
#endif
while ( *s ) /* */
{ if (ToLower(*(s++)) != ToLower(*(t++))) /* */
return false; /* */
} /* */
#ifdef DEBUG
assert(t != NULL); /* */
#endif
return (*t == '\0' ? true : false); /* */
} /*------------------------*/
/*-----------------------------------------------------------------------------
** Function: cmp()
** Type: int
** Purpose: Compare two strings.
** Arguments:
** s the first string
** t the second string
** Returns:
**___________________________________________________ */
int cmp(s, t) /* */
register String s; /* */
register String t; /* */
{ register int d; /* */
while ( *s ) /* */
{ d = *(s++) - *(t++); /* */
if ( d ) return d; /* */
} /* */
return *s - *t; /* */
} /*------------------------*/
/*-----------------------------------------------------------------------------
** Function: lower()
** Purpose: Function to translate all letters in a string to lower case.
** Arguments:
** s string to convert
** Returns: The converted string.
**___________________________________________________ */
String lower(s) /* */
register String s; /* */
{ String t = s; /* */
while ( *s ) { *s = ToLower(*s); ++s; } /* */
return t; /* */
} /*------------------------*/
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