396 lines
6.6 KiB
C
396 lines
6.6 KiB
C
/*
|
|
* doprnt.c - print formatted output
|
|
*/
|
|
/* $Id$ */
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include "loc_incl.h"
|
|
|
|
/* gnum() is used to get the width and precision fields of a format. */
|
|
static const char*
|
|
gnum(register const char* f, int* ip, va_list* app)
|
|
{
|
|
register int i, c;
|
|
|
|
if (*f == '*')
|
|
{
|
|
*ip = va_arg((*app), int);
|
|
f++;
|
|
}
|
|
else
|
|
{
|
|
i = 0;
|
|
while ((c = *f - '0') >= 0 && c <= 9)
|
|
{
|
|
i = i * 10 + c;
|
|
f++;
|
|
}
|
|
*ip = i;
|
|
}
|
|
return f;
|
|
}
|
|
|
|
#if _EM_WSIZE == _EM_PSIZE
|
|
#define set_pointer(flags) /* nothing */
|
|
#elif _EM_LSIZE == _EM_PSIZE
|
|
#define set_pointer(flags) (flags |= FL_LONG)
|
|
#else
|
|
#error garbage pointer size
|
|
#define set_pointer(flags) /* compilation might continue */
|
|
#endif
|
|
|
|
#define PUTC(c) \
|
|
do \
|
|
{ \
|
|
int i = putc(c, stream); \
|
|
if (i == EOF) \
|
|
{ \
|
|
if (ferror(stream)) \
|
|
return -1; \
|
|
} \
|
|
} while (0)
|
|
|
|
/* print an ordinal number */
|
|
static char*
|
|
o_print(va_list* ap, int flags, char* s, char c, int precision, int is_signed)
|
|
{
|
|
long signed_val;
|
|
unsigned long unsigned_val;
|
|
char* old_s = s;
|
|
int base;
|
|
|
|
switch (flags & (FL_SHORT | FL_LONG))
|
|
{
|
|
case FL_SHORT:
|
|
if (is_signed)
|
|
{
|
|
signed_val = (short)va_arg(*ap, int);
|
|
}
|
|
else
|
|
{
|
|
unsigned_val = (unsigned short)va_arg(*ap, unsigned);
|
|
}
|
|
break;
|
|
case FL_LONG:
|
|
if (is_signed)
|
|
{
|
|
signed_val = va_arg(*ap, long);
|
|
}
|
|
else
|
|
{
|
|
unsigned_val = va_arg(*ap, unsigned long);
|
|
}
|
|
break;
|
|
default:
|
|
if (is_signed)
|
|
{
|
|
signed_val = va_arg(*ap, int);
|
|
}
|
|
else
|
|
{
|
|
unsigned_val = va_arg(*ap, unsigned int);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (is_signed)
|
|
{
|
|
if (signed_val < 0)
|
|
{
|
|
*s++ = '-';
|
|
signed_val = -signed_val;
|
|
}
|
|
else if (flags & FL_SIGN)
|
|
*s++ = '+';
|
|
else if (flags & FL_SPACE)
|
|
*s++ = ' ';
|
|
unsigned_val = signed_val;
|
|
}
|
|
if ((flags & FL_ALT) && (c == 'o'))
|
|
*s++ = '0';
|
|
if (!unsigned_val)
|
|
{
|
|
if (!precision)
|
|
return s;
|
|
}
|
|
else if (((flags & FL_ALT) && (c == 'x' || c == 'X'))
|
|
|| c == 'p')
|
|
{
|
|
*s++ = '0';
|
|
*s++ = (c == 'X' ? 'X' : 'x');
|
|
}
|
|
|
|
switch (c)
|
|
{
|
|
case 'b':
|
|
base = 2;
|
|
break;
|
|
case 'o':
|
|
base = 8;
|
|
break;
|
|
case 'd':
|
|
case 'i':
|
|
case 'u':
|
|
base = 10;
|
|
break;
|
|
case 'x':
|
|
case 'X':
|
|
case 'p':
|
|
base = 16;
|
|
break;
|
|
}
|
|
|
|
s = _i_compute(unsigned_val, base, s, precision);
|
|
|
|
if (c == 'X')
|
|
while (old_s != s)
|
|
{
|
|
*old_s = toupper(*old_s);
|
|
old_s++;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
int _doprnt(register const char* fmt, va_list ap, FILE* stream)
|
|
{
|
|
register char* s;
|
|
register int j;
|
|
int i, c, width, precision, zfill, flags, between_fill;
|
|
int nrchars = 0;
|
|
const char* oldfmt;
|
|
char *s1, buf[1025];
|
|
|
|
while (c = *fmt++)
|
|
{
|
|
if (c != '%')
|
|
{
|
|
#ifdef CPM
|
|
if (c == '\n')
|
|
{
|
|
PUTC('\r');
|
|
}
|
|
#endif
|
|
PUTC(c);
|
|
nrchars++;
|
|
continue;
|
|
}
|
|
flags = 0;
|
|
do
|
|
{
|
|
switch (*fmt)
|
|
{
|
|
case '-':
|
|
flags |= FL_LJUST;
|
|
break;
|
|
case '+':
|
|
flags |= FL_SIGN;
|
|
break;
|
|
case ' ':
|
|
flags |= FL_SPACE;
|
|
break;
|
|
case '#':
|
|
flags |= FL_ALT;
|
|
break;
|
|
case '0':
|
|
flags |= FL_ZEROFILL;
|
|
break;
|
|
default:
|
|
flags |= FL_NOMORE;
|
|
continue;
|
|
}
|
|
fmt++;
|
|
} while (!(flags & FL_NOMORE));
|
|
|
|
oldfmt = fmt;
|
|
fmt = gnum(fmt, &width, &ap);
|
|
if (fmt != oldfmt)
|
|
flags |= FL_WIDTHSPEC;
|
|
|
|
if (*fmt == '.')
|
|
{
|
|
fmt++;
|
|
oldfmt = fmt;
|
|
fmt = gnum(fmt, &precision, &ap);
|
|
if (precision >= 0)
|
|
flags |= FL_PRECSPEC;
|
|
}
|
|
|
|
if ((flags & FL_WIDTHSPEC) && width < 0)
|
|
{
|
|
width = -width;
|
|
flags |= FL_LJUST;
|
|
}
|
|
if (!(flags & FL_WIDTHSPEC))
|
|
width = 0;
|
|
|
|
if (flags & FL_SIGN)
|
|
flags &= ~FL_SPACE;
|
|
|
|
if (flags & FL_LJUST)
|
|
flags &= ~FL_ZEROFILL;
|
|
|
|
s = s1 = buf;
|
|
|
|
switch (*fmt)
|
|
{
|
|
case 'h':
|
|
flags |= FL_SHORT;
|
|
fmt++;
|
|
break;
|
|
case 'l':
|
|
flags |= FL_LONG;
|
|
fmt++;
|
|
break;
|
|
case 'L':
|
|
flags |= FL_LONGDOUBLE;
|
|
fmt++;
|
|
break;
|
|
}
|
|
|
|
switch (c = *fmt++)
|
|
{
|
|
default:
|
|
#ifdef CPM
|
|
if (c == '\n')
|
|
{
|
|
PUTC('\r');
|
|
nrchars++;
|
|
}
|
|
#endif
|
|
PUTC(c);
|
|
nrchars++;
|
|
continue;
|
|
case 'n':
|
|
if (flags & FL_SHORT)
|
|
*va_arg(ap, short*) = (short)nrchars;
|
|
else if (flags & FL_LONG)
|
|
*va_arg(ap, long*) = (long)nrchars;
|
|
else
|
|
*va_arg(ap, int*) = (int)nrchars;
|
|
continue;
|
|
case 's':
|
|
s1 = va_arg(ap, char*);
|
|
if (s1 == NULL)
|
|
s1 = "(null)";
|
|
s = s1;
|
|
while (precision || !(flags & FL_PRECSPEC))
|
|
{
|
|
if (*s == '\0')
|
|
break;
|
|
s++;
|
|
precision--;
|
|
}
|
|
break;
|
|
case 'p':
|
|
set_pointer(flags);
|
|
/* fallthrough */
|
|
case 'b':
|
|
case 'o':
|
|
case 'u':
|
|
case 'x':
|
|
case 'X':
|
|
if (!(flags & FL_PRECSPEC))
|
|
precision = 1;
|
|
else if (c != 'p')
|
|
flags &= ~FL_ZEROFILL;
|
|
s = o_print(&ap, flags, s, c, precision, 0);
|
|
break;
|
|
case 'd':
|
|
case 'i':
|
|
flags |= FL_SIGNEDCONV;
|
|
if (!(flags & FL_PRECSPEC))
|
|
precision = 1;
|
|
else
|
|
flags &= ~FL_ZEROFILL;
|
|
s = o_print(&ap, flags, s, c, precision, 1);
|
|
break;
|
|
case 'c':
|
|
*s++ = va_arg(ap, int);
|
|
break;
|
|
#ifndef ACKCONF_NO_STDIO_FLOAT
|
|
case 'G':
|
|
case 'g':
|
|
if ((flags & FL_PRECSPEC) && (precision == 0))
|
|
precision = 1;
|
|
case 'f':
|
|
case 'E':
|
|
case 'e':
|
|
if (!(flags & FL_PRECSPEC))
|
|
precision = 6;
|
|
|
|
if (precision >= sizeof(buf))
|
|
precision = sizeof(buf) - 1;
|
|
|
|
flags |= FL_SIGNEDCONV;
|
|
s = _f_print(&ap, flags, s, c, precision);
|
|
break;
|
|
#endif /* ACKCONF_NO_STDIO_FLOAT */
|
|
case 'r':
|
|
ap = va_arg(ap, va_list);
|
|
fmt = va_arg(ap, char*);
|
|
continue;
|
|
}
|
|
zfill = ' ';
|
|
if (flags & FL_ZEROFILL)
|
|
zfill = '0';
|
|
j = s - s1;
|
|
|
|
/* between_fill is true under the following conditions:
|
|
* 1- the fill character is '0'
|
|
* and
|
|
* 2a- the number is of the form 0x... or 0X...
|
|
* or
|
|
* 2b- the number contains a sign or space
|
|
*/
|
|
between_fill = 0;
|
|
if ((flags & FL_ZEROFILL)
|
|
&& (((c == 'x' || c == 'X') && (flags & FL_ALT))
|
|
|| (c == 'p')
|
|
|| ((flags & FL_SIGNEDCONV)
|
|
&& (*s1 == '+' || *s1 == '-' || *s1 == ' '))))
|
|
between_fill++;
|
|
|
|
if ((i = width - j) > 0)
|
|
if (!(flags & FL_LJUST))
|
|
{ /* right justify */
|
|
nrchars += i;
|
|
if (between_fill)
|
|
{
|
|
if (flags & FL_SIGNEDCONV)
|
|
{
|
|
j--;
|
|
nrchars++;
|
|
PUTC(*s1++);
|
|
}
|
|
else
|
|
{
|
|
j -= 2;
|
|
nrchars += 2;
|
|
PUTC(*s1++);
|
|
PUTC(*s1++);
|
|
}
|
|
}
|
|
do
|
|
{
|
|
PUTC(zfill);
|
|
} while (--i);
|
|
}
|
|
|
|
nrchars += j;
|
|
while (--j >= 0)
|
|
{
|
|
PUTC(*s1++);
|
|
}
|
|
|
|
if (i > 0)
|
|
nrchars += i;
|
|
while (--i >= 0)
|
|
PUTC(zfill);
|
|
}
|
|
return nrchars;
|
|
}
|