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/* smallprint.c: small print routines for WIN32
Copyright 1996, 1998, 2000, 2001, 2002 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
int __small_sprintf (char *dst, const char *fmt, ...);
int __small_vsprintf (char *dst, const char *fmt, va_list ap);
#define LLMASK (0xffffffffffffffffULL)
#define LMASK (0xffffffff)
#define rnarg(dst, base, dosign, len, pad) __rn ((dst), (base), (dosign), va_arg (ap, long), len, pad, LMASK)
#define rnargLL(dst, base, dosign, len, pad) __rn ((dst), (base), (dosign), va_arg (ap, unsigned long long), len, pad, LLMASK)
static char __fastcall *
__rn (char *dst, int base, int dosign, long long val, int len, int pad, unsigned long long mask)
{
/* longest number is ULLONG_MAX, 18446744073709551615, 20 digits */
unsigned long long uval = 0;
char res[20];
static const char str[16] = "0123456789ABCDEF";
int l = 0;
if (dosign && val < 0)
{
*dst++ = '-';
uval = -val;
}
else if (dosign > 0 && val > 0)
{
*dst++ = '+';
uval = val;
}
else
uval = val;
uval &= mask;
do
{
res[l++] = str[uval % base];
uval /= base;
}
while (uval);
while (len-- > l)
*dst++ = pad;
while (l > 0)
*dst++ = res[--l];
return dst;
}
int
__small_vsprintf (char *dst, const char *fmt, va_list ap)
{
char tmp[CYG_MAX_PATH + 1];
char *orig = dst;
const char *s;
while (*fmt)
{
int i, n = 0x7fff;
if (*fmt != '%')
*dst++ = *fmt++;
else
{
int len = 0;
char pad = ' ';
int addsign = -1;
switch (*++fmt)
{
case '+':
addsign = 1;
fmt++;
break;
case '%':
*dst++ = *fmt++;
continue;
}
for (;;)
{
char c = *fmt++;
switch (c)
{
case '0':
if (len == 0)
{
pad = '0';
continue;
}
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
len = len * 10 + (c - '0');
continue;
case 'l':
continue;
case 'c':
{
int c = va_arg (ap, int);
if (c > ' ' && c <= 127)
*dst++ = c;
else
{
*dst++ = '0';
*dst++ = 'x';
dst = __rn (dst, 16, 0, c, len, pad, LMASK);
}
}
break;
case 'E':
strcpy (dst, "Win32 error ");
dst = __rn (dst + sizeof ("Win32 error"), 10, 0, GetLastError (), len, pad, LMASK);
break;
case 'd':
dst = rnarg (dst, 10, addsign, len, pad);
break;
case 'D':
dst = rnargLL (dst, 10, addsign, len, pad);
break;
case 'u':
dst = rnarg (dst, 10, 0, len, pad);
break;
case 'U':
dst = rnargLL (dst, 10, 0, len, pad);
break;
case 'o':
dst = rnarg (dst, 8, 0, len, pad);
break;
case 'p':
*dst++ = '0';
*dst++ = 'x';
/* fall through */
case 'x':
dst = rnarg (dst, 16, 0, len, pad);
break;
case 'X':
dst = rnargLL (dst, 16, 0, len, pad);
break;
case 'P':
if (!GetModuleFileName (NULL, tmp, CYG_MAX_PATH))
s = "cygwin program";
else
s = tmp;
goto fillin;
case '.':
n = strtol (fmt, (char **)&fmt, 10);
if (*fmt++ != 's')
goto endfor;
case 's':
s = va_arg (ap, char *);
if (s == NULL)
s = "(null)";
fillin:
for (i = 0; *s && i < n; i++)
*dst++ = *s++;
break;
default:
*dst++ = '?';
*dst++ = fmt[-1];
}
endfor:
break;
}
}
}
*dst = 0;
return dst - orig;
}
int
__small_sprintf (char *dst, const char *fmt, ...)
{
int r;
va_list ap;
va_start (ap, fmt);
r = __small_vsprintf (dst, fmt, ap);
va_end (ap);
return r;
}
void
small_printf (const char *fmt, ...)
{
char buf[16384];
va_list ap;
DWORD done;
int count;
#if 0 /* Turn on to force console errors */
extern SECURITY_ATTRIBUTES sec_none;
HANDLE h = CreateFileA ("CONOUT$", GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_WRITE | FILE_SHARE_WRITE, &sec_none,
OPEN_EXISTING, 0, 0);
if (h)
SetStdHandle (STD_ERROR_HANDLE, h);
#endif
va_start (ap, fmt);
count = __small_vsprintf (buf, fmt, ap);
va_end (ap);
WriteFile (GetStdHandle (STD_ERROR_HANDLE), buf, count, &done, NULL);
FlushFileBuffers (GetStdHandle (STD_ERROR_HANDLE));
}
#ifdef DEBUGGING
static HANDLE NO_COPY console_handle = NULL;
void
console_printf (const char *fmt, ...)
{
char buf[16384];
va_list ap;
DWORD done;
int count;
if (!console_handle)
console_handle = CreateFileA ("CON", GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0);
if (console_handle == INVALID_HANDLE_VALUE)
console_handle = GetStdHandle (STD_ERROR_HANDLE);
va_start (ap, fmt);
count = __small_vsprintf (buf, fmt, ap);
va_end (ap);
WriteFile (console_handle, buf, count, &done, NULL);
FlushFileBuffers (console_handle);
}
#endif
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