ctype.c

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

#include <u.h>
#include <libc.h>
#include <ctype.h>

uchar	_ctype[256] =
{
/*	 0	 1	 2	 3	 4	 5	 6	 7  */

/*  0*/	_C,	_C,	_C,	_C,	_C,	_C,	_C,	_C,
/* 10*/	_C,	_S|_C,	_S|_C,	_S|_C,	_S|_C,	_S|_C,	_C,	_C,
/* 20*/	_C,	_C,	_C,	_C,	_C,	_C,	_C,	_C,
/* 30*/	_C,	_C,	_C,	_C,	_C,	_C,	_C,	_C,
/* 40*/	_S|_B,	_P,	_P,	_P,	_P,	_P,	_P,	_P,
/* 50*/	_P,	_P,	_P,	_P,	_P,	_P,	_P,	_P,
/* 60*/	_N|_X,	_N|_X,	_N|_X,	_N|_X,	_N|_X,	_N|_X,	_N|_X,	_N|_X,
/* 70*/	_N|_X,	_N|_X,	_P,	_P,	_P,	_P,	_P,	_P,
/*100*/	_P,	_U|_X,	_U|_X,	_U|_X,	_U|_X,	_U|_X,	_U|_X,	_U,
/*110*/	_U,	_U,	_U,	_U,	_U,	_U,	_U,	_U,
/*120*/	_U,	_U,	_U,	_U,	_U,	_U,	_U,	_U,
/*130*/	_U,	_U,	_U,	_P,	_P,	_P,	_P,	_P,
/*140*/	_P,	_L|_X,	_L|_X,	_L|_X,	_L|_X,	_L|_X,	_L|_X,	_L,
/*150*/	_L,	_L,	_L,	_L,	_L,	_L,	_L,	_L,
/*160*/	_L,	_L,	_L,	_L,	_L,	_L,	_L,	_L,
/*170*/	_L,	_L,	_L,	_P,	_P,	_P,	_P,	_C,
};