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/* make the lookup table for output.asm */
#define TABLESIZE ('x' - ' ' + 1)
/* possible states to be in */
#define NORMAL 0 /* normal character to be output */
#define PERCENT 1 /* just read percent sign */
#define FLAG 2 /* just read a flag character */
#define WIDTH 3 /* just read a width specification character */
#define DOT 4 /* just read a dot between width and precision */
#define PRECIS 5 /* just read a precision specification character */
#define SIZE 6 /* just read a size specification character */
#define TYPE 7 /* just read a conversion specification character */
#define BOGUS 0 /* bogus state - print the character literally */
#define NUMSTATES 8
/* possible types of characters to read */
#define CH_OTHER 0 /* character with no special meaning */
#define CH_PERCENT 1 /* '%' */
#define CH_DOT 2 /* '.' */
#define CH_STAR 3 /* '*' */
#define CH_ZERO 4 /* '0' */
#define CH_DIGIT 5 /* '1'..'9' */
#define CH_FLAG 6 /* ' ', '+', '-', '#' */
#define CH_SIZE 7 /* 'h', 'l', 'L', 'N', 'F', 'w' */
#define CH_TYPE 8 /* conversion specified character */
#define NUMCHARS 9
unsigned char table[TABLESIZE]; /* the table we build */
/* this is the state table */
int statetable[NUMSTATES][NUMCHARS] = {
/* state, other % . * 0 digit flag size type */
/* NORMAL */ { NORMAL, PERCENT, NORMAL, NORMAL, NORMAL, NORMAL, NORMAL, NORMAL, NORMAL },
/* PERCENT */ { BOGUS, NORMAL, DOT, WIDTH, FLAG, WIDTH, FLAG, SIZE, TYPE },
/* FLAG */ { BOGUS, BOGUS, DOT, WIDTH, FLAG, WIDTH, FLAG, SIZE, TYPE },
/* WIDTH */ { BOGUS, BOGUS, DOT, BOGUS, WIDTH, WIDTH, BOGUS, SIZE, TYPE },
/* DOT */ { BOGUS, BOGUS, BOGUS, PRECIS, PRECIS, PRECIS, BOGUS, SIZE, TYPE },
/* PRECIS */ { BOGUS, BOGUS, BOGUS, BOGUS, PRECIS, PRECIS, BOGUS, SIZE, TYPE },
/* SIZE */ { BOGUS, BOGUS, BOGUS, BOGUS, BOGUS, BOGUS, BOGUS, SIZE, TYPE },
/* TYPE */ { NORMAL, PERCENT, NORMAL, NORMAL, NORMAL, NORMAL, NORMAL, NORMAL, NORMAL }
};
/* this determines what type of character ch is */
static int chartype (
int ch
)
{
if (ch < ' ' || ch > 'z')
return CH_OTHER;
if (ch == '%')
return CH_PERCENT;
if (ch == '.')
return CH_DOT;
if (ch == '*')
return CH_STAR;
if (ch == '0')
return CH_ZERO;
if (strchr("123456789", ch))
return CH_DIGIT;
if (strchr(" +-#", ch))
return CH_FLAG;
if (strchr("hlLNFw", ch))
return CH_SIZE;
if (strchr("diouxXfeEgGcspnCSZ", ch))
return CH_TYPE;
return CH_OTHER;
}
main()
{
int ch;
int state, class;
int i;
for (ch = ' '; ch <= 'x'; ++ch) {
table[ch-' '] = chartype(ch);
}
for (state = NORMAL; state <= TYPE; ++state)
for (class = CH_OTHER; class <= CH_TYPE; ++class)
table[class*8+state] |= statetable[state][class]<<4;
for (i = 0; i < TABLESIZE; ++i) {
if (i % 8 == 0)
printf("\ndb\t %.2xh", table[i]);
else
printf(", %.2xh", table[i]);
}
return 0;
}
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