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/* Wide character classification and mapping utilities <wctype.h>
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
#ifndef _PDCLIB_WCTYPE_H
#define _PDCLIB_WCTYPE_H _PDCLIB_WCTYPE_H
#include "pdclib/_PDCLIB_int.h"
typedef _PDCLIB_wint_t wint_t;
// wctrans_t
// wctype_t
#ifndef _PDCLIB_WEOF_DEFINED
#define _PDCLIB_WEOF_DEFINED _PDCLIB_WEOF_DEFINED
#define WEOF (wint_t)-1
#endif
/* Wide character classification functions */
/* Returns iswalpha( wc ) || iswdigit( wc ) */
int iswalnum( wint_t wc );
/* Returns true for wide characters for which either isupper( wc ) or
islower( wc ) is true, as well as a set of locale-specific wide
characters which are neither control characters, digits, punctuation,
or whitespace.
*/
int iswalpha( wint_t wc );
/* Returns true if the character iswspace() and used for separating words
within a line of text. In the "C" locale, only L' ' and L'\t' are
considered blanks.
*/
int iswblank( wint_t wc );
/* Returns true if the wide character is a control character. */
int iswcntrl( wint_t wc );
/* Returns true if the wide character is a decimal digit. Locale-
independent. */
int iswdigit( wint_t wc );
/* Returns iswprint( wc ) && ! iswspace( wc ).
NOTE: This definition differs from that of isgraph() in <ctype.h>,
which considers only ' ', not all isspace() characters.
*/
int iswgraph( wint_t wc );
/* Returns true for lowerspace wide characters, as well as a set of
locale-specific wide characters which are neither control charcters,
digits, punctuation, or whitespace.
*/
int iswlower( wint_t wc );
/* Returns true for every printing wide character. */
int iswprint( wint_t wc );
/* Returns true for a locale-specific set of punctuation characters that
are neither whitespace nor alphanumeric.
*/
int iswpunct( wint_t wc );
/* Returns true for a locale-specific set of whitespace characters that
are neither alphanumeric, graphic, or punctuation.
*/
int iswspace( wint_t wc );
/* Returns true for upperspace wide characters, as well as a set of
locale-specific wide characters which are neither control charcters,
digits, punctuation, or whitespace.
*/
int iswupper( wint_t wc );
/* Returns true if the wide character is a hexadecimal digit. Locale-
independent. */
int iswxdigit( wint_t wc );
/* Extensible wide character classification functions */
/* Returns true if the wide character wc has the property described by
desc (which was retrieved by a previous call to wctype() without
changing the LC_CTYPE locale setting between the two calls).
*/
int iswctype( wint_t wc, wctype_t desc );
/* Returns a description object for a named character property, to be
used as parameter to the iswctype() function. Supported property
names are:
"alnum" -- alphanumeric, as per iswalnum()
"alpha" -- alphabetic, as per iswalpha()
"blank" -- blank, as per iswblank()
"cntrl" -- control, as per iswcntrl()
"digit" -- decimal digit, as per iswdigit()
"graph" -- graphic, as per iswgraph()
"lower" -- lowercase, as per iswlower()
"print" -- printing, as per iswprint()
"punct" -- punctuation, as per iswprint()
"space" -- whitespace, as per iswspace()
"upper" -- uppercase, as per iswupper()
"xdigit" -- hexadecimal digit, as per iswxdigit()
For unsupported properties, the function returns zero.
*/
wctype_t wctype( const char * property );
/* Wide character case mapping utilities */
/* Converts an uppercase letter to a corresponding lowercase letter. Input for
which no corresponding lowercase letter exists remains unchanged.
*/
wint_t towlower( wint_t wc );
/* Converts a lowercase letter to a corresponding uppercase letter. Input for
which no corresponding uppercase letter exists remains unchanged.
*/
wint_t towupper( wint_t wc );
/* Extensible wide character case mapping utilities */
/* Converts the wide character wc according to the transition described
by desc (which was retrieved by a previous call to wctrans() without
changing the LC_CTYPE locale setting between the two calls).
*/
wint_t towctrans( wint_t wc, wctrans_t desc );
/* Returns a description object for a named character transformation, to
be used as parameter to the towctrans() function. Supported transformation
properties are:
"tolower" -- lowercase mapping, as per towlower()
"toupper" -- uppercase mapping, as per towupper()
For unsupported properties, the function returns zero.
*/
wctrans_t wctrans( const char * property );
#endif
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