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#ifndef _LIBHX_CTYPE_H
#define _LIBHX_CTYPE_H 1
#ifdef __cplusplus
# include <cctype>
#else
# include <ctype.h>
# include <stdbool.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* ctype.h workarounds. The is*() functions takes an int, but people
* commonly pass in a char. Because char can technically be signed, the
* value would be sign-extended during promotion to the int type which the
* ctype family functions take.
*
* The HX_ ctype related functions therefore explicitly take an unsigned char,
* and thus knowingly make it impossible to pass in stdio's "EOF" (-1).
* [When was the last time you did a isalpha(EOF) anyway?]
*
* Because, again, this all works due to implicit type conversion, these
* wrappers look rather plain. Oh, also note we are returning the much
* more modern "bool".
*
* And not all ctype functions are provided - no need so far, and I do not
* want to clutter it before needing it.
*/
static __inline__ bool HX_isalnum(unsigned char c)
{
return isalnum(c);
}
static __inline__ bool HX_isalpha(unsigned char c)
{
return isalpha(c);
}
static __inline__ bool HX_isascii(unsigned char c)
{
return isascii(c);
}
static __inline__ bool HX_isdigit(unsigned char c)
{
return isdigit(c);
}
static __inline__ bool HX_islower(unsigned char c)
{
return islower(c);
}
static __inline__ bool HX_isprint(unsigned char c)
{
return isprint(c);
}
static __inline__ bool HX_isspace(unsigned char c)
{
return isspace(c);
}
static __inline__ bool HX_isupper(unsigned char c)
{
return isupper(c);
}
static __inline__ bool HX_isxdigit(unsigned char c)
{
return isxdigit(c);
}
static __inline__ unsigned char HX_tolower(unsigned char c)
{
return tolower(c);
}
static __inline__ unsigned char HX_toupper(unsigned char c)
{
return toupper(c);
}
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* _LIBHX_CTYPE_H */
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