test-ctype.c

来自「关系型数据库 Postgresql 6.5.2」· C语言 代码 · 共 77 行

/*

   test-ctype.c

Written by Oleg BroytMann, [e-mail]
   with help from Oleg Bartunov, [e-mail]
Copyright (C) 1998 PhiloSoft Design

This is copyrighted but free software. You can use it, modify and distribute
in original or modified form providing that the author's names and the above
copyright notice will remain.

Disclaimer, legal notice and absence of warranty.
   This software provided "as is" without any kind of warranty. In no event
the author shall be liable for any damage, etc.

*/

#include <stdio.h>
#include <locale.h>
#include <ctype.h>

char	   *flag(int b);
void		describe_char(int c);

#undef LONG_FLAG

char *
flag(int b)
{
#ifdef LONG_FLAG
	return b ? "yes" : "no";
#else
	return b ? "+" : " ";
#endif
}

void
describe_char(int c)
{
	char		cp = c,
				up = toupper(c),
				lo = tolower(c);

	if (!isprint(cp))
		cp = ' ';
	if (!isprint(up))
		up = ' ';
	if (!isprint(lo))
		lo = ' ';

	printf("chr#%-4d%2c%6s%6s%6s%6s%6s%6s%6s%6s%6s%6s%6s%4c%4c\n", c, cp, flag(isalnum(c)), flag(isalpha(c)), flag(iscntrl(c)), flag(isdigit(c)), flag(islower(c)), flag(isgraph(c)), flag(isprint(c)), flag(ispunct(c)), flag(isspace(c)), flag(isupper(c)), flag(isxdigit(c)), lo, up);
}

int
main()
{
	short		c;
	char	   *cur_locale;

	cur_locale = setlocale(LC_ALL, "");
	if (cur_locale)
		fprintf(stderr, "Successfulle set locale to %s\n", cur_locale);
	else
	{
		fprintf(stderr, "Cannot setup locale. Either your libc does not provide\nlocale support, or your locale data is corrupt, or you have not set\nLANG or LC_CTYPE environment variable to proper value. Program aborted.\n");
		return 1;
	}

	printf("char#  char alnum alpha cntrl digit lower graph print punct space upper xdigit lo up\n");
	for (c = 0; c <= 255; c++)
		describe_char(c);

	return 0;
}