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researchv10 Norman

mkdir fio libc
echo fio/fioprint.c 1>&2
sed 's/^-//' >fio/fioprint.c <<'!'
-#define	FIO_IMP
-#include	<varargs.h>
-#include	<fio.h>

-/* VARARGS 2 */
-Fprint(f, fmt, va_alist)
int f;
char *fmt;
va_dcl
-{
-	char buf[FIOBSIZE], *out;
-	register long n;
-	va_list ap;
-	extern char *doprint();

-	va_start(ap);
-	out = doprint(buf, fmt, &ap);
-	va_end(ap);
-	n = out-buf;
-	if(Fwrite(f, buf, n) != n)
-		return(-1);
-	else
-		return((int)n);
-}
!
echo libc/doprint.c 1>&2
sed 's/^-//' >libc/doprint.c <<'!'
-#include <varargs.h>

-#define	SIZE	1024
-#define	FUNSIGN	4
-#define	FSHORT	2
-#define	FLONG	1
-#define	PTR	sizeof (char *)
-#define	SHORT	sizeof (int)
-#define	INT	sizeof (int)
-#define	LONG	sizeof (long)
-#define	FLOAT	sizeof (double)
-#define	FDIGIT	30
-#define	FDEFLT	8
-#define	IDIGIT	40
-#define	MAXCONV	30

static char	*out, *eout;
static		convcount  = { 13 };

static	noconv();
static	cconv(), dconv(), hconv(), lconv();
static	oconv(), sconv(), uconv(), xconv();

static	econv(), fconv(), gconv(), percent();
int	printcol;
static
int	(*fmtconv[MAXCONV])() =
-{
-	noconv,
-	cconv, dconv, hconv, lconv,
-	oconv, sconv, uconv, xconv,
-	econv, fconv, gconv, percent,
-};
static
char	fmtindex[128] =
-{
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0,12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 1, 2, 9,10,11, 3, 0, 0, 0, 4, 0, 0, 5,
-	0, 0, 0, 6, 0, 7, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0,
-};

fmtinstall(c, f)
char c;
int (*f)();
-{

-	c &= 0177;
-	if(fmtindex[c] == 0) {
-		if(convcount >= MAXCONV)
-			return 1;
-		fmtindex[c] = convcount++;
-	}
-	fmtconv[fmtindex[c]] = f;
-	return 0;
-}

char*
donprint(s, es, fmt, argpp)
char *s, *es;
register char *fmt;
va_list *argpp;
-{
-	register int f1, f2, f3, sf1, c;
-	char *sout, *seout;

-	sout = out;
-	seout = eout;
-	out = s;
-	eout = es-1;
loop:
-	c = *fmt++;
-	if(c != '%') {
-		if(c == 0) {
-			*out = 0;
-			s = out;
-			out = sout;
-			eout = seout;
-			return s;
-		}
-		if(out < eout)
-			*out++ = c;
-		printcol++;
-		if(c == '\n')
-			printcol = 0; else
-		if(c == '\t')
-			printcol = (printcol+7) & ~7;
-		goto loop;
-	}
-	f1 = 0;
-	f2 = -1;
-	f3 = 0;
-	c = *fmt++;
-	sf1 = 0;
-	if(c == '-') {
-		sf1 = 1;
-		c = *fmt++;
-	}
-	while(c >= '0' && c <= '9') {
-		f1 = f1*10 + c-'0';
-		c = *fmt++;
-	}
-	if(sf1)
-		f1 = -f1;
-	if(c != '.')
-		goto l1;
-	c = *fmt++;
-	while(c >= '0' && c <= '9') {
-		if(f2 < 0)
-			f2 = 0;
-		f2 = f2*10 + c-'0';
-		c = *fmt++;
-	}
l1:
-	if(c == 0)
-		fmt--;
-	/* NB: first arg is now a (va_list *) */
-	c = (*fmtconv[fmtindex[c&0177]])(argpp, f1, f2, f3);
-	if(c < 0) {
-		f3 |= -c;
-		c = *fmt++;
-		goto l1;
-	}
-#ifdef notdef
-	argp += c;	/* increment is now done in called routine by va_arg() */
-#endif
-	goto loop;
-}

numbconv(o, f1, f2, f3, b)
va_list *o;
-{
-	char s[IDIGIT];
-	register long v;
-	register int i, f, n, r;

-	switch(f3 & (FLONG|FSHORT|FUNSIGN)) {
-	case FLONG:
-		v = va_arg(*o, long);
-		r = LONG;
-		break;

-	case FUNSIGN|FLONG:
-		v = va_arg(*o, unsigned long);
-		r = LONG;
-		break;

-	/* NB: a (unsigned) short argument is promoted to an (unsigned) int arg. */
-	case FSHORT:
-		v = (short)va_arg(*o, int);
-		r = SHORT;
-		break;

-	case FUNSIGN|FSHORT:
-		v = (unsigned short)va_arg(*o, unsigned);
-		r = SHORT;
-		break;

-	default:
-		v = va_arg(*o, int);
-		r = INT;
-		break;

-	case FUNSIGN:
-		v = va_arg(*o, unsigned);
-		r = INT;
-		break;
-	}
-	f = 0;
-	if(!(f3 & FUNSIGN) && v < 0) {
-		v = -v;
-		f = 1;
-	}
-	s[IDIGIT-1] = 0;
-	for(i = IDIGIT-2; i >= 1; i--) {
-		n = (unsigned long)v % b;
-		n += '0';
-		if(n > '9')
-			n += 'a' - ('9'+1);
-		s[i] = n;
-		v = (unsigned long)v / b;
-		if(f2 >= 0 && i >= IDIGIT-f2)
-			continue;
-		if(v <= 0)
-			break;
-	}
-	if(f)
-		s[--i] = '-';
-	strconv(s+i, f1, -1);
-	return r;
-}

char*
doprint(s, fmt, argp)
char *s, *fmt;
va_list *argp;
-{

-	return donprint(s, s+SIZE, fmt, argp);
-}

-/*
-	if you change this, change chconv
-*/

strconv(o, f1, f2)
char *o;
-{
-	register int n, c;
-	register char *s;

-	n = 0;
-	for(s = o; *s++;)
-		n++;
-	if(f1 >= 0)
-		while(n < f1) {
-			if(out < eout)
-				*out++ = ' ';
-			printcol++;
-			n++;
-		}
-	for(s=o; c = *s++;)
-		if(f2 != 0) {
-			if(out < eout)
-				*out++ = c;
-			printcol++;
-			if(c == '\n')
-				printcol = 0; else
-			if(c == '\t')
-				printcol = (printcol+7) & ~7;
-			f2--;
-		}
-	if(f1 < 0) {
-		f1 = -f1;
-		while(n < f1) {
-			if(out < eout)
-				*out++ = ' ';
-			printcol++;
-			n++;
-		}
-	}
-}

chconv(o, f1)
char o;
-{
-	register int n;

-	n = 1;
-	if(f1 >= 0)
-		while(n < f1) {
-			if(out < eout)
-				*out++ = ' ';
-			printcol++;
-			n++;
-		}
-	if(out < eout)
-		*out++ = o;
-	printcol++;
-	if(o == '\n')
-		printcol = 0; else
-	if(o == '\t')
-		printcol = (printcol+7) & ~7;
-	if(f1 < 0) {
-		f1 = -f1;
-		while(n < f1) {
-			if(out < eout)
-				*out++ = ' ';
-			printcol++;
-			n++;
-		}
-	}
-}

-/* ARGSUSED */
static
noconv(o, f1, f2, f3)
char *o;
-{

-	strconv("***", 0, -1);
-	return 0;
-}

-/* ARGSUSED */
static
cconv(o, f1, f2, f3)
va_list *o;
-{
-	chconv((char)va_arg(*o, int), f1);
-	return INT;
-}

static
dconv(o, f1, f2, f3)
va_list *o;
-{
-	int r;

-	r = numbconv(o, f1, f2, f3, 10);
-	return r;
-}

-/* ARGSUSED */
static
hconv(o, f1, f2, f3)
-{
-	return -FSHORT;
-}

-/* ARGSUSED */
static
lconv(o, f1, f2, f3)
-{

-	return -FLONG;
-}

static
oconv(o, f1, f2, f3)
va_list *o;
-{
-	int r;

-	r = numbconv(o, f1, f2, f3, 8);
-	return r;
-}

-/* ARGSUSED */
static
sconv(o, f1, f2, f3)
va_list *o;
-{

-	strconv(va_arg(*o, char *), f1, f2);
-	return PTR;
-}

-/* ARGSUSED */
static
uconv(o, f1, f2, f3)
-{
-	return -FUNSIGN;
-}

static
xconv(o, f1, f2, f3)
va_list *o;
-{
-	int r;

-	r = numbconv(o, f1, f2, f3, 16);
-	return r;
-}

double	pow10(), frexp();
-/* ARGSUSED */
fltconv(f, f1, f2, f3, c)
register double f;
-{
-	char s1[FDIGIT+10], s2[FDIGIT+10];
-	register double g;
-	register int d, i, n, s;
-	double h;
-	int e;
-	int c1, c2, c3;

-	s = 0;
-	if(f < 0) {
-		f = -f;
-		s++;
-	}

loop:
-	e = 0;
-	g = 0;
-	if(f != 0) {
-		g = frexp(f, &e);
-		e = e * .30103;
-		d = e/2;
-		h = f * pow10(-d);		/* 10**-e in 2 parts */
-		g = h * pow10(d-e);
-		while(g < 1) {
-			e--;
-			g = h * pow10(d-e);
-		}
-		while(g >= 10) {
-			e++;
-			g = h * pow10(d-e);
-		}
-	}
-	if(f2 < 0)
-		f2 = FDEFLT;
-	if(c == 'g' && f2 > 0)
-		f2--;
-	if(f2 > FDIGIT)
-		f2 = FDIGIT;
-	/*
-	 * n is number of digits to convert
-	 * 1 before, f2 after, 1 extra for rounding
-	 */
-	n = f2 + 2;
-	if(c == 'f') {
-		/*
-		 * e+1 before, f2 after, 1 extra
-		 */
-		n += e;
-		if(n <= 0) {
-			n = 1;
-			g = 0;
-		}
-	}
-	if(n >= FDIGIT+2) {
-		if(c == 'e')
-			f2 = -1;
-		c = 'e';
-		goto loop;
-	}
-	/*
-	 * convert n digits
-	 */
-	for(i=0; i<n; i++) {
-		d = g;
-		if(d > g)
-			d--;
-		g -= d;
-		s1[i+1] = d + '0';
-		g *= 10;
-	}
-	/*
-	 * round by adding .5 into extra digit
-	 */
-	d = 5;
-	for(i=n-1; i>=0; i--) {
-		s1[i+1] += d;
-		d = 0;
-		if(s1[i+1] > '9') {
-			s1[i+1] -= 10;
-			d++;
-		}
-	}
-	i = 1;
-	if(d) {
-		s1[0] = '1';
-		e++;
-		i = 0;
-	} 
-	/*
-	 * copy into final place
-	 * c1 digits of leading '0'
-	 * c2 digits from conversion
-	 * c3 digits after '.'
-	 */
-	d = 0;
-	if(s)
-		s2[d++] = '-';
-	c1 = 0;
-	c2 = f2 + 1;
-	c3 = f2;
-	if(c == 'g')
-	if(e >= -5 && e <= f2) {
-		c1 = -e - 1;
-		c3 = c1;
-		if(c1 < 0)
-			c1 = 0;
-		c3 = f2 - e;
-		c = 'h';
-	}
-	if(c == 'f') {
-		c1 = -e;
-		if(c1 < 0)
-			c1 = 0;
-		if(c1 > f2)
-			c1 = c2;
-		c2 += e;
-		if(c2 < 0)
-			c2 = 0;
-	}
-	while(c1 > 0) {
-		if(c1+c2 == c3)
-			s2[d++] = '.';
-		s2[d++] = '0';
-		c1--;
-	}
-	while(c2 > 0) {
-		if(c1+c2 == c3)
-			s2[d++] = '.';
-		s2[d++] = s1[i++];
-		c2--;
-	}
-	/*
-	 * strip trailing '0' on g conv
-	 */
-	if(c == 'g' || c == 'h') {
-		for(n=d-1; n>=0; n--)
-			if(s2[n] != '0')
-				break;
-		for(i=n; i>=0; i--)
-			if(s2[i] == '.') {
-				d = n;
-				if(i != n)
-					d++;
-				break;
-			}
-	}
-	if(c == 'e' || c == 'g') {
-		s2[d++] = 'e';
-		s2[d++] = '+';
-		c1 = e;
-		if(c1 < 0) {
-			s2[d-1] = '-';
-			c1 = -c1;
-		}
-		if(c1 >= 100) {
-			s2[d++] = c1/100 + '0';
-			c1 %= 100;
-		}
-		s2[d++] = c1/10 + '0';
-		s2[d++] = c1%10 + '0';
-	}
-	s2[d] = 0;
-	strconv(s2, f1, -1);
-	return FLOAT;
-}

static
econv(o, f1, f2, f3)
va_list *o;
-{

-	return fltconv(va_arg(*o, double), f1, f2, f3, 'e');
-}

static
fconv(o, f1, f2, f3)
va_list *o;
-{

-	return fltconv(va_arg(*o, double), f1, f2, f3, 'f');
-}

static
gconv(o, f1, f2, f3)
va_list *o;
-{

-	return fltconv(va_arg(*o, double), f1, f2, f3, 'g');
-}

static
percent()
-{

-	if(out < eout)
-		*out++ = '%';
-	return 0;
-}
!
echo libc/print.c 1>&2
sed 's/^-//' >libc/print.c <<'!'
-#include <varargs.h>

-#define	SIZE	1024
extern int	printcol;

char	*doprint();

-/* VARARGS 1 */
print(fmt, va_alist)
char *fmt;
va_dcl
-{
-	char buf[SIZE], *out;
-	va_list ap;

-	va_start(ap);
-	out = doprint(buf, fmt, &ap);
-	va_end(ap);
-	return write(1, buf, (int)(out-buf));
-}

-/* VARARGS 2 */
fprint(fd, fmt, va_alist)
char *fmt;
va_dcl
-{
-	char buf[SIZE], *out;
-	va_list ap;

-	va_start(ap);
-	out = doprint(buf, fmt, &ap);
-	va_end(ap);
-	return write(fd, buf, (int)(out-buf));
-}

-/* VARARGS 2 */
sprint(buf, fmt, va_alist)
char *buf;
char *fmt;
va_dcl
-{
-	char *out;
-	int scol;
-	va_list ap;

-	scol = printcol;
-	va_start(ap);
-	out = doprint(buf, fmt, &ap);
-	va_end(ap);
-	printcol = scol;
-	return out-buf;
-}
!

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