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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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