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#include <stdarg.h>
#define wchar(ch) putch(ch)
cprintf(char * fmt, va_list ap)
{
register int c;
int count = 0;
int type, base;
long val;
char * cp;
char padch=' ';
int minsize = 0;
while(c=*fmt++)
{
if(c!='%')
{
wchar(c);
count++;
}
else
{
type=1;
do { c=*fmt++; } while( c>='0' && c<='9');
padch = *fmt;
minsize=0;
if(padch == '-') fmt++;
for(;;)
{
c=*fmt++;
if( c<'0' || c>'9' ) break;
minsize*=10; minsize+=c-'0';
}
while( c=='.' || (c>='0' && c<='9')) { c=*fmt++; }
if( padch == '-' ) minsize = -minsize;
else
if( padch == '0' ) padch='0'; else padch=' ';
if( c == 0 ) break;
if(c=='h')
{
c=*fmt++;
type = 0;
}
else if(c=='l')
{
c=*fmt++;
type = 2;
}
switch(c)
{
case 'x': base=16; type|=4; if(0) {
case 'o': base= 8; type|=4; } if(0) {
case 'u': base=10; type|=4; } if(0) {
case 'd': base=10; }
val=0;
switch(type)
{
case 0: val=va_arg(ap, short); break;
case 1: val=va_arg(ap, int); break;
case 2: val=va_arg(ap, long); break;
case 4: val=va_arg(ap, unsigned short); break;
case 5: val=va_arg(ap, unsigned int); break;
case 6: val=va_arg(ap, unsigned long); break;
}
cp = __numout(val,base);
if(0) {
case 's':
cp=va_arg(ap, char *);
}
if( minsize > 0 )
{
minsize -= strlen(cp);
while(minsize>0) { wchar(padch); minsize--; }
minsize=0;
}
if( minsize < 0 ) minsize= -minsize-strlen(cp);
while(*cp)
wchar(*cp++);
while(minsize>0) { wchar(' '); minsize--; }
break;
case 'c':
wchar(va_arg(ap, int));
break;
default:
wchar(c);
break;
}
}
}
return count;
}
static char nstring[]="0123456789ABCDEF";
static unsigned char *
__numout(long i, int base)
{
static unsigned char out[16];
int n;
int flg = 0;
unsigned long val;
if (i<0 && base==10)
{
flg = 1;
i = -i;
}
val = i;
for (n = 0; n < 15; n++)
out[n] = ' ';
out[15] = '\0';
n = 14;
do
{
out[n] = nstring[val % base];
n--;
val /= base;
}
while(val);
if(flg) out[n--] = '-';
return &out[n+1];
}
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