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/*
* $Header: /disk/d/src/devel/gated/dist/src/RCS/str.c,v 2.1 92/02/24 14:13:04 jch Exp $
*/
/*%Copyright%*/
/************************************************************************
* *
* GateD, Release 2 *
* *
* Copyright (c) 1990,1991,1992 by Cornell University *
* All rights reserved. *
* *
* THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY *
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT *
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY *
* AND FITNESS FOR A PARTICULAR PURPOSE. *
* *
* Royalty-free licenses to redistribute GateD Release *
* 2 in whole or in part may be obtained by writing to: *
* *
* GateDaemon Project *
* Information Technologies/Network Resources *
* 143 Caldwell Hall *
* Cornell University *
* Ithaca, NY 14853-2602 *
* *
* GateD is based on Kirton's EGP, UC Berkeley's routing *
* daemon (routed), and DCN's HELLO routing Protocol. *
* Development of Release 2 has been supported by the *
* National Science Foundation. *
* *
* Please forward bug fixes, enhancements and questions to the *
* gated mailing list: gated-people@gated.cornell.edu. *
* *
* Authors: *
* *
* Jeffrey C Honig <jch@gated.cornell.edu> *
* Scott W Brim <swb@gated.cornell.edu> *
* *
*************************************************************************
* *
* Portions of this software may fall under the following *
* copyrights: *
* *
* Copyright (c) 1988 Regents of the University of California. *
* All rights reserved. *
* *
* Redistribution and use in source and binary forms are *
* permitted provided that the above copyright notice and *
* this paragraph are duplicated in all such forms and that *
* any documentation, advertising materials, and other *
* materials related to such distribution and use *
* acknowledge that the software was developed by the *
* University of California, Berkeley. The name of the *
* University may not be used to endorse or promote *
* products derived from this software without specific *
* prior written permission. THIS SOFTWARE IS PROVIDED *
* ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, *
* INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
* *
************************************************************************/
#include "include.h"
#include "math.h"
#include <ctype.h>
#if defined(_IBMR2)
#include <time.h>
#endif /* defined(_IBMR2) */
#include <sys/time.h>
#ifndef vax11c
extern int sys_nerr;
extern char *sys_errlist[];
#define gd_error(x) x < sys_nerr ? sys_errlist[x] : "Unknown error number"
#else /* vax11c */
char *gd_error();
#endif /* vax11c */
/*
* Make a copy of a string and lowercase it
*/
char *
gd_lower(str)
char *str;
{
char *src, *dst;
static char *lstr;
static u_int lstrlen;
if (lstr && (strlen(str) > lstrlen)) {
free(lstr);
lstr = (char *) 0;
lstrlen = 0;
}
if (!lstr) {
lstrlen = strlen(str) + 1;
lstr = (char *) calloc(1, lstrlen);
if (!lstr) {
trace(TR_ALL, LOG_ERR, "gd_tolower: calloc: %m");
quit(errno);
}
}
src = str;
dst = lstr;
while (*src) {
*dst++ = isupper(*src) ? tolower(*src) : *src;
src++;
}
*dst = (char) 0;
return (lstr);
}
/*
* Gated version of fprintf
*/
#ifdef STDARG
/*VARARGS2*/
int
fprintf(FILE * stream, const char *format,...)
#else /* STDARG */
/*ARGSUSED*/
/*VARARGS0*/
int
fprintf(va_alist)
va_dcl
#endif /* STDARG */
{
int rc;
va_list ap;
char buffer[BUFSIZ];
#ifdef STDARG
va_start(ap, format);
#else /* STDARG */
const char *format;
FILE *stream;
va_start(ap);
stream = va_arg(ap, FILE *);
format = va_arg(ap, const char *);
#endif /* STDARG */
rc = vsprintf(buffer, format, &ap);
fputs((char *) buffer, stream);
va_end(ap);
return (rc);
}
/*
* Gated version of sprintf
*/
#ifdef STDARG
/*VARARGS2*/
int
sprintf(char *s, const char *format,...)
#else /* STDARG */
/*ARGSUSED*/
/*VARARGS0*/
int
sprintf(va_alist)
va_dcl
#endif /* STDARG */
{
int rc;
va_list ap;
#ifdef STDARG
va_start(ap, format);
#else /* STDARG */
const char *format;
char *s;
va_start(ap);
s = va_arg(ap, char *);
format = va_arg(ap, const char *);
#endif /* STDARG */
rc = vsprintf(s, format, &ap);
va_end(ap);
return (rc);
}
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)doprnt.c 5.35 (Berkeley) 6/27/88";
#endif /* LIBC_SCCS and not lint */
/* 11-bit exponent (VAX G floating point) is 308 decimal digits */
#define MAXEXP 308
/* 128 bit fraction takes up 39 decimal digits; max reasonable precision */
#define MAXFRACT 39
#define DEFPREC 6
#define BUF (MAXEXP+MAXFRACT+1) /* + decimal point */
#define PUTC(ch) *dp++ = ch; cnt++;
#define ARG() \
_ulong = flags&LONGINT ? va_arg(*argp, long) : \
flags&SHORTINT ? va_arg(*argp, short) : va_arg(*argp, int);
#define todigit(c) ((c) - '0')
#define tochar(n) ((n) + '0')
/* have to deal with the negative buffer count kludge */
#define NEGATIVE_COUNT_KLUDGE
#define LONGINT 0x01 /* long integer */
#define LONGDBL 0x02 /* long double; unimplemented */
#define SHORTINT 0x04 /* short integer */
#define ALT 0x08 /* alternate form */
#define LADJUST 0x10 /* left adjustment */
#define ZEROPAD 0x20 /* zero (as opposed to blank) pad */
#define HEXPREFIX 0x40 /* add 0x or 0X prefix */
static char *
round(fract, expon, start, end, ch, signp)
double fract;
int *expon;
register char *start, *end;
char ch, *signp;
{
double tmp;
if (fract)
(void) modf(fract * 10, &tmp);
else
tmp = (double) todigit(ch);
if (tmp > 4)
for (;; --end) {
if (*end == '.')
--end;
if (++*end <= '9')
break;
*end = '0';
if (end == start) {
if (expon) { /* e/E; increment exponent */
*end = '1';
++*expon;
} else { /* f; add extra digit */
*--end = '1';
--start;
}
break;
}
}
/* ``"%.3f", (double)-0.0004'' gives you a negative 0. */
else if (*signp == '-')
for (;; --end) {
if (*end == '.')
--end;
if (*end != '0')
break;
if (end == start)
*signp = 0;
}
return (start);
}
static char *
exponent(p, expon, fmtch)
register char *p;
register int expon;
char fmtch;
{
register char *t;
char expbuf[MAXEXP];
*p++ = fmtch;
if (expon < 0) {
expon = -expon;
*p++ = '-';
} else
*p++ = '+';
t = expbuf + MAXEXP;
if (expon > 9) {
do {
*--t = tochar(expon % 10);
} while ((expon /= 10) > 9);
*--t = tochar(expon);
for (; t < expbuf + MAXEXP; *p++ = *t++) ;
} else {
*p++ = '0';
*p++ = tochar(expon);
}
return (p);
}
static int
cvt(number, prec, flags, signp, fmtch, startp, endp)
double number;
register int prec;
int flags;
char fmtch;
char *signp, *startp, *endp;
{
register char *p, *t;
register double fract;
int dotrim, expcnt, gformat;
double integer, tmp;
dotrim = expcnt = gformat = 0;
fract = modf(number, &integer);
/* get an extra slot for rounding. */
t = ++startp;
/*
* get integer portion of number; put into the end of the buffer; the
* .01 is added for modf(356.0 / 10, &integer) returning .59999999...
*/
for (p = endp - 1; integer; ++expcnt) {
tmp = modf(integer / 10, &integer);
*p-- = tochar((int) ((tmp + .01) * 10));
}
switch (fmtch) {
case 'f':
/* reverse integer into beginning of buffer */
if (expcnt)
for (; ++p < endp; *t++ = *p) ;
else
*t++ = '0';
/*
* if precision required or alternate flag set, add in a
* decimal point.
*/
if (prec || flags & ALT)
*t++ = '.';
/* if requires more precision and some fraction left */
if (fract) {
if (prec)
do {
fract = modf(fract * 10, &tmp);
*t++ = tochar((int) tmp);
} while (--prec && fract);
if (fract)
startp = round(fract, (int *) NULL, startp,
t - 1, (char) 0, signp);
}
for (; prec--; *t++ = '0') ;
break;
case 'e':
case 'E':
eformat:if (expcnt) {
*t++ = *++p;
if (prec || flags & ALT)
*t++ = '.';
/* if requires more precision and some integer left */
for (; prec && ++p < endp; --prec)
*t++ = *p;
/*
* if done precision and more of the integer component,
* round using it; adjust fract so we don't re-round
* later.
*/
if (!prec && ++p < endp) {
fract = 0.0;
startp = round((double) 0, &expcnt, startp,
t - 1, *p, signp);
}
/* adjust expcnt for digit in front of decimal */
--expcnt;
}
/* until first fractional digit, decrement exponent */
else if (fract) {
/* adjust expcnt for digit in front of decimal */
for (expcnt = -1;; --expcnt) {
fract = modf(fract * 10, &tmp);
if (tmp)
break;
}
*t++ = tochar((int) tmp);
if (prec || flags & ALT)
*t++ = '.';
} else {
*t++ = '0';
if (prec || flags & ALT)
*t++ = '.';
}
/* if requires more precision and some fraction left */
if (fract) {
if (prec)
do {
fract = modf(fract * 10, &tmp);
*t++ = tochar((int) tmp);
} while (--prec && fract);
if (fract)
startp = round(fract, &expcnt, startp,
t - 1, (char) 0, signp);
}
/* if requires more precision */
for (; prec--; *t++ = '0') ;
/* unless alternate flag, trim any g/G format trailing 0's */
if (gformat && !(flags & ALT)) {
while (t > startp && *--t == '0') ;
if (*t == '.')
--t;
++t;
}
t = exponent(t, expcnt, fmtch);
break;
case 'g':
case 'G':
/* a precision of 0 is treated as a precision of 1. */
if (!prec)
++prec;
/*
* ``The style used depends on the value converted; style e
* will be used only if the exponent resulting from the
* conversion is less than -4 or greater than the precision.''
* -- ANSI X3J11
*/
if (expcnt > prec || !expcnt && fract && fract < .0001) {
/*
* g/G format counts "significant digits, not digits of
* precision; for the e/E format, this just causes an
* off-by-one problem, i.e. g/G considers the digit
* before the decimal point significant and e/E doesn't
* count it as precision.
*/
--prec;
fmtch -= 2; /* G->E, g->e */
gformat = 1;
goto eformat;
}
/*
* reverse integer into beginning of buffer,
* note, decrement precision
*/
if (expcnt)
for (; ++p < endp; *t++ = *p, --prec) ;
else
*t++ = '0';
/*
* if precision required or alternate flag set, add in a
* decimal point. If no digits yet, add in leading 0.
*/
if (prec || flags & ALT) {
dotrim = 1;
*t++ = '.';
} else
dotrim = 0;
/* if requires more precision and some fraction left */
if (fract) {
if (prec) {
do {
fract = modf(fract * 10, &tmp);
*t++ = tochar((int) tmp);
} while (!tmp);
while (--prec && fract) {
fract = modf(fract * 10, &tmp);
*t++ = tochar((int) tmp);
}
}
if (fract)
startp = round(fract, (int *) NULL, startp,
t - 1, (char) 0, signp);
}
/* alternate format, adds 0's for precision, else trim 0's */
if (flags & ALT)
for (; prec--; *t++ = '0') ;
else if (dotrim) {
while (t > startp && *--t == '0') ;
if (*t != '.')
++t;
}
}
return (t - startp);
}
int
vsprintf(dest, fmt0, argp)
char *dest;
const char *fmt0;
va_list *argp;
{
register const char *fmt; /* format string */
register char *dp; /* Destination pointer */
register int ch; /* character from fmt */
register int cnt; /* return value accumulator */
register int n; /* random handy integer */
register char *t; /* buffer pointer */
double _double; /* double precision arguments %[eEfgG] */
u_long _ulong; /* integer arguments %[diouxX] */
int base = 10; /* base for [diouxX] conversion */
int dprec; /* decimal precision in [diouxX] */
int fieldsz; /* field size expanded by sign, etc */
int flags; /* flags as above */
int fpprec; /* `extra' floating precision in [eEfgG] */
int prec; /* precision from format (%.3d), or -1 */
int realsz; /* field size expanded by decimal precision */
int size; /* size of converted field or string */
int width; /* width from format (%8d), or 0 */
char sign; /* sign prefix (' ', '+', '-', or \0) */
char softsign; /* temporary negative sign for floats */
const char *digs; /* digits for [diouxX] conversion */
char buf[BUF]; /* space for %c, %[diouxX], %[eEfgG] */
int error_number = errno;
dp = dest;
fmt = fmt0;
digs = "0123456789abcdef";
for (cnt = 0;; ++fmt) {
for (; (ch = *fmt) && ch != '%'; ++fmt) {
PUTC(ch);
}
if (!ch) {
PUTC(ch);
return (--cnt);
}
flags = 0;
dprec = 0;
fpprec = 0;
width = 0;
prec = -1;
sign = '\0';
rflag:switch (*++fmt) {
case ' ':
/*
* ``If the space and + flags both appear, the space
* flag will be ignored.''
* -- ANSI X3J11
*/
if (!sign)
sign = ' ';
goto rflag;
case '#':
flags |= ALT;
goto rflag;
case '*':
/*
* ``A negative field width argument is taken as a
* - flag followed by a positive field width.''
* -- ANSI X3J11
* They don't exclude field widths read from args.
*/
if ((width = va_arg(*argp, int)) >= 0)
goto rflag;
width = -width;
/* FALLTHROUGH */
case '-':
flags |= LADJUST;
goto rflag;
case '+':
sign = '+';
goto rflag;
case '.':
if (*++fmt == '*')
n = va_arg(*argp, int);
else {
n = 0;
while (isascii(*fmt) && isdigit(*fmt))
n = 10 * n + todigit(*fmt++);
--fmt;
}
prec = n < 0 ? -1 : n;
goto rflag;
case '0':
/*
* ``Note that 0 is taken as a flag, not as the
* beginning of a field width.''
* -- ANSI X3J11
*/
flags |= ZEROPAD;
goto rflag;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
n = 0;
do {
n = 10 * n + todigit(*fmt);
} while (isascii(*++fmt) && isdigit(*fmt));
width = n;
--fmt;
goto rflag;
case 'L':
flags |= LONGDBL;
goto rflag;
case 'h':
flags |= SHORTINT;
goto rflag;
case 'l':
flags |= LONGINT;
goto rflag;
case 'c':
*(t = buf) = va_arg(*argp, int);
size = 1;
sign = '\0';
goto pforw;
case 'D':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'd':
case 'i':
ARG();
if ((long) _ulong < 0) {
_ulong = -_ulong;
sign = '-';
}
base = 10;
goto number;
case 'e':
case 'E':
case 'f':
case 'g':
case 'G':
_double = va_arg(*argp, double);
/*
* don't do unrealistic precision; just pad it with
* zeroes later, so buffer size stays rational.
*/
if (prec > MAXFRACT) {
if (*fmt != 'g' && *fmt != 'G' || (flags & ALT))
fpprec = prec - MAXFRACT;
prec = MAXFRACT;
} else if (prec == -1)
prec = DEFPREC;
/*
* softsign avoids negative 0 if _double is < 0 and
* no significant digits will be shown
*/
if (_double < 0) {
softsign = '-';
_double = -_double;
} else
softsign = 0;
/*
* cvt may have to round up past the "start" of the
* buffer, i.e. ``intf("%.2f", (double)9.999);'';
* if the first char isn't NULL, it did.
*/
*buf = NULL;
size = cvt(_double, prec, flags, &softsign, *fmt, buf,
buf + sizeof(buf));
if (softsign)
sign = '-';
t = *buf ? buf : buf + 1;
goto pforw;
case 'n':
if (flags & LONGINT)
*va_arg(*argp, long *) = cnt;
else if (flags & SHORTINT)
*va_arg(*argp, short *) = cnt;
else
*va_arg(*argp, int *) = cnt;
break;
case 'O':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'o':
ARG();
base = 8;
goto nosign;
case 'p':
/*
* ``The argument shall be a pointer to void. The
* value of the pointer is converted to a sequence
* of printable characters, in an implementation-
* defined manner.''
* -- ANSI X3J11
*/
/* NOSTRICT */
_ulong = (u_long) va_arg(*argp, void *);
base = 16;
goto nosign;
case 'T':
/* Time */
{
time_t time = va_arg(*argp, time_t);
struct tm *tm;
tm = localtime(&time);
if (tm->tm_year < 70) {
tm = gmtime(&time);
}
t = buf + BUF;
*--t = (char) 0;
*--t = digs[tm->tm_sec % 10];
*--t = digs[tm->tm_sec / 10];
*--t = ':';
*--t = digs[tm->tm_min % 10];
*--t = digs[tm->tm_min / 10];
*--t = ':';
*--t = digs[tm->tm_hour % 10];
*--t = digs[tm->tm_hour / 10];
}
goto string;
case 'A':
/* socket address */
{
register u_char *cp, *cp1;
register sockaddr_un *addr;
cp = cp1 = (u_char *) 0;
addr = va_arg(*argp, sockaddr_un *);
if (!addr) {
strcpy(buf, "??*sockaddr??");
t = buf;
break;
}
t = buf + BUF;
*--t = (char) 0;
*buf = (char) 0;
switch (addr->a.sa_family) {
case AF_UNSPEC:
strcpy(buf, "*Unspecified*");
t = (char *) 0;
break;
case AF_INET:
base = 10;
if (flags & ALT) {
if (_ulong = ntohs(addr->in.sin_port)) {
do {
*--t = digs[_ulong % base];
} while (_ulong /= base);
*--t = '/';
}
}
cp1 = (u_char *) & addr->in.sin_addr.s_addr;
cp = cp1 + sizeof(addr->in.sin_addr.s_addr);
break;
#ifdef ISOPROTO_RAW
case AF_ISO:
base = 16;
cp1 = (u_char *) addr->iso.siso_addr.isoa_genaddr;
cp = cp1 + addr->iso.siso_addr.isoa_len;
break;
#endif /* ISOPROTO_RAW */
#ifdef AF_LINK
case AF_LINK:
/* Format link level address as: '#<index> <name> <link_address>" */
/* Assume index is always present */
strcpy(buf, "#");
cp = (u_char *) t;
base = 10;
_ulong = addr->dl.sdl_index;
do {
*--t = digs[_ulong % base];
} while (_ulong /= base);
strcat(buf, t);
t = (char *) cp;
/* Add name if present */
if (addr->dl.sdl_nlen) {
strcat(buf, " ");
strncat(buf, addr->dl.sdl_data, addr->dl.sdl_nlen);
}
/* Set up to display the link level address in HEX if present */
if (addr->dl.sdl_alen + addr->dl.sdl_slen) {
strcat(buf, " ");
base = 16;
cp1 = (u_char *) addr->dl.sdl_data + addr->dl.sdl_nlen;
cp = cp1 + addr->dl.sdl_alen + addr->dl.sdl_slen;
} else {
cp = cp1 = (u_char *) 0;
}
#endif /* AF_LINK */
default:
base = 16;
cp1 = (u_char *) addr;
cp = cp1 + (socksize(addr) ? socksize(addr) : sizeof(sockaddr_un));
}
if (t) {
if (cp > cp1) {
if (cp > (cp1 + socksize(addr))) {
cp = cp1 + socksize(addr);
}
do {
_ulong = *--cp;
do {
*--t = digs[_ulong % base];
} while (_ulong /= base);
*--t = '.';
} while (cp > cp1);
t++;
}
if (*buf) {
t -= strlen(buf);
strcpy(t, buf);
}
} else {
t = buf;
}
}
goto string;
case 'm':
strcpy(t = buf, gd_error(error_number));
goto string;
case 's':
t = va_arg(*argp, char *);
if (!t) {
strcpy(buf, "(null)");
t = buf;
}
string:if (prec >= 0) {
for (size = 0; (size < prec) && t[size]; size++) ;
} else
size = strlen(t);
sign = '\0';
goto pforw;
case 'U':
flags |= LONGINT;
/*FALLTHROUGH*/
case 'u':
ARG();
base = 10;
goto nosign;
case 'B':
digs = "_|";
/* FALLTHROUGH */
case 'b':
ARG();
base = 2;
goto binhex;
case 'X':
digs = "0123456789ABCDEF";
/* FALLTHROUGH */
case 'x':
ARG();
base = 16;
binhex: /* leading 0x/X only if non-zero */
if (flags & ALT && _ulong != 0)
flags |= HEXPREFIX;
/* unsigned conversions */
nosign:sign = '\0';
/*
* ``... diouXx conversions ... if a precision is
* specified, the 0 flag will be ignored.''
* -- ANSI X3J11
*/
number:if ((dprec = prec) >= 0)
flags &= ~ZEROPAD;
/*
* ``The result of converting a zero value with an
* explicit precision of zero is no characters.''
* -- ANSI X3J11
*/
t = buf + BUF;
if (_ulong != 0 || prec != 0) {
do {
*--t = digs[_ulong % base];
_ulong /= base;
} while (_ulong);
if (flags & ALT && base == 8 && *t != *digs)
*--t = *digs; /* octal leading 0 */
}
size = buf + BUF - t;
pforw:
/*
* All reasonable formats wind up here. At this point,
* `t' points to a string which (if not flags&LADJUST)
* should be padded out to `width' places. If
* flags&ZEROPAD, it should first be prefixed by any
* sign or other prefix; otherwise, it should be blank
* padded before the prefix is emitted. After any
* left-hand padding and prefixing, emit zeroes
* required by a decimal [diouxX] precision, then print
* the string proper, then emit zeroes required by any
* leftover floating precision; finally, if LADJUST,
* pad with blanks.
*/
/*
* compute actual size, so we know how much to pad
* fieldsz excludes decimal prec; realsz includes it
*/
fieldsz = size + fpprec;
if (sign)
fieldsz++;
if (flags & HEXPREFIX)
fieldsz += 2;
realsz = dprec > fieldsz ? dprec : fieldsz;
/* right-adjusting blank padding */
if ((flags & (LADJUST | ZEROPAD)) == 0 && width)
for (n = realsz; n < width; n++)
PUTC(' ');
/* prefix */
if (sign)
PUTC(sign);
if (flags & HEXPREFIX) {
PUTC(*digs);
PUTC((char) *fmt);
}
/* right-adjusting zero padding */
if ((flags & (LADJUST | ZEROPAD)) == ZEROPAD)
for (n = realsz; n < width; n++)
PUTC(*digs);
/* leading zeroes from decimal precision */
for (n = fieldsz; n < dprec; n++)
PUTC(*digs);
/* the string or number proper */
memcpy((char *) dp, t, size);
dp += size;
cnt += size;
/* trailing f.p. zeroes */
while (--fpprec >= 0)
PUTC(*digs);
/* left-adjusting padding (always blank) */
if (flags & LADJUST)
for (n = realsz; n < width; n++)
PUTC(' ');
digs = "0123456789abcdef";
break;
case '\0': /* "%?" prints ?, unless ? is NULL */
PUTC((char) *fmt);
return (--cnt);
default:
PUTC((char) *fmt);
}
}
/* NOTREACHED */
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.