cclass.h

/* character-class table */

#define CCLASS_ALNUM    0
#define CCLASS_ALPHA    1
#define CCLASS_BLANK    2
#define CCLASS_CNTRL    3
#define CCLASS_DIGIT    4
#define CCLASS_GRAPH    5
#define CCLASS_LOWER    6
#define CCLASS_PRINT    7
#define CCLASS_PUNCT    8
#define CCLASS_SPACE    9
#define CCLASS_UPPER    10
#define CCLASS_XDIGIT   11
#define CCLASS_LAST     12

extern struct cclass {
        const char *name;
        const char *chars;
        const char *multis;
        uint  mask;
} cclasses[];