cclass.h

/* character-class table */
static struct cclass {
	char *name;
	char *chars;
	char *multis;
} cclasses[] = {
	{	"alnum",
		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
		"" },

	{	"alpha",
		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
		"" },

	{
		"blank",
		" \t",
		"" },

	{	"cntrl",
		"\007\b\t\n\v\f\r\1\2\3\4\5\6\16\17\20\21\22\23\24\25\26\27\30\31\32\33\34\35\36\37\177",
		"" },

	{	"digit",
		"0123456789",
		"" },

	{	"graph",
		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
		"" },

	{	"lower",
		"abcdefghijklmnopqrstuvwxyz",
		"" },

	{	"print",
		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~ ",
		"" },

	{	"punct",
		"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
		"" },

	{	"space",
		"\t\n\v\f\r ",
		"" },

	{	"upper",
		"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
		"" },

	{	"xdigit",
		"0123456789ABCDEFabcdef",
		"" },

	{	NULL,
		0,
		"" }
};