112 lines
1.7 KiB
C
112 lines
1.7 KiB
C
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*/
|
|
/* $Header$ */
|
|
|
|
#if __STDC__
|
|
#include <stdarg.h>
|
|
#else
|
|
#include <varargs.h>
|
|
#endif
|
|
#include <string.h>
|
|
|
|
extern char *long2str();
|
|
|
|
static int
|
|
integral(int c)
|
|
{
|
|
switch (c) {
|
|
case 'b':
|
|
return -2;
|
|
case 'd':
|
|
return 10;
|
|
case 'o':
|
|
return -8;
|
|
case 'u':
|
|
return -10;
|
|
case 'x':
|
|
return -16;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*VARARGS2*/
|
|
/*FORMAT1 $
|
|
%s = char *
|
|
%l = long
|
|
%c = int
|
|
%[uxbo] = unsigned int
|
|
%d = int
|
|
$ */
|
|
int
|
|
_format(char *buf, char *fmt, va_list argp)
|
|
{
|
|
register char *pf = fmt;
|
|
register char *pb = buf;
|
|
|
|
while (*pf) {
|
|
if (*pf == '%') {
|
|
register int width, base, pad, npad;
|
|
char *arg;
|
|
char cbuf[2];
|
|
char *badformat = "<bad format>";
|
|
|
|
/* get padder */
|
|
if (*++pf == '0') {
|
|
pad = '0';
|
|
++pf;
|
|
}
|
|
else
|
|
pad = ' ';
|
|
|
|
/* get width */
|
|
width = 0;
|
|
while (*pf >= '0' && *pf <= '9')
|
|
width = 10 * width + *pf++ - '0';
|
|
|
|
if (*pf == 's') {
|
|
arg = va_arg(argp, char *);
|
|
}
|
|
else
|
|
if (*pf == 'c') {
|
|
cbuf[0] = va_arg(argp, int);
|
|
cbuf[1] = '\0';
|
|
arg = &cbuf[0];
|
|
}
|
|
else
|
|
if (*pf == 'l') {
|
|
/* alignment ??? */
|
|
base = integral(*++pf);
|
|
if (base) {
|
|
arg = long2str(va_arg(argp,long), base);
|
|
}
|
|
else {
|
|
pf--;
|
|
arg = badformat;
|
|
}
|
|
}
|
|
else
|
|
if ((base = integral(*pf))) {
|
|
arg = long2str((long)va_arg(argp,int), base);
|
|
}
|
|
else
|
|
if (*pf == '%')
|
|
arg = "%";
|
|
else
|
|
arg = badformat;
|
|
|
|
npad = width - strlen(arg);
|
|
|
|
while (npad-- > 0)
|
|
*pb++ = pad;
|
|
|
|
while (*pb++ = *arg++);
|
|
pb--;
|
|
pf++;
|
|
}
|
|
else
|
|
*pb++ = *pf++;
|
|
}
|
|
return pb - buf;
|
|
}
|