newlib/winsup/cygwin/smallprint.cc

479 lines
9.5 KiB
C++

/* smallprint.cc: small print routines for WIN32
Copyright 1996, 1998, 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009
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 "ntdll.h"
#include <stdlib.h>
#include <ctype.h>
#include <wchar.h>
#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[] = "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[NT_MAX_PATH];
char *orig = dst;
const char *s;
PWCHAR w;
UNICODE_STRING uw, *us;
DWORD err = GetLastError ();
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 'C':
{
WCHAR wc = (WCHAR) va_arg (ap, int);
char buf[4], *c;
sys_wcstombs (buf, 4, &wc, 1);
for (c = buf; *c; ++c)
if (isprint (*c))
*dst++ = *c;
else
{
*dst++ = '0';
*dst++ = 'x';
dst = __rn (dst, 16, 0, *c, len, pad, LMASK);
}
}
case 'E':
strcpy (dst, "Win32 error ");
dst = __rn (dst + sizeof ("Win32 error"), 10, 0, err, 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, NT_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;
case 'W':
w = va_arg (ap, PWCHAR);
RtlInitUnicodeString (us = &uw, w ?: L"(null)");
goto wfillin;
case 'S':
us = va_arg (ap, PUNICODE_STRING);
if (!us)
RtlInitUnicodeString (us = &uw, L"(null)");
wfillin:
{
if (!sys_wcstombs (tmp, NT_MAX_PATH, us->Buffer,
us->Length / sizeof (WCHAR)))
{
s = "invalid UNICODE_STRING";
goto fillin;
}
char *t = tmp;
for (i = 0; *t && i < n; i++)
*dst++ = *t++;
}
break;
default:
*dst++ = '?';
*dst++ = fmt[-1];
}
endfor:
break;
}
}
}
*dst = 0;
SetLastError (err);
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
#define wrnarg(dst, base, dosign, len, pad) __wrn ((dst), (base), (dosign), va_arg (ap, long), len, pad, LMASK)
#define wrnargLL(dst, base, dosign, len, pad) __wrn ((dst), (base), (dosign), va_arg (ap, unsigned long long), len, pad, LLMASK)
static PWCHAR __fastcall
__wrn (PWCHAR 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;
WCHAR res[20];
static const WCHAR str[] = L"0123456789ABCDEF";
int l = 0;
if (dosign && val < 0)
{
*dst++ = L'-';
uval = -val;
}
else if (dosign > 0 && val > 0)
{
*dst++ = L'+';
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_vswprintf (PWCHAR dst, const WCHAR *fmt, va_list ap)
{
WCHAR tmp[NT_MAX_PATH];
PWCHAR orig = dst;
const char *s;
PWCHAR w;
UNICODE_STRING uw, *us;
DWORD err = GetLastError ();
while (*fmt)
{
unsigned int n = 0x7fff;
if (*fmt != L'%')
*dst++ = *fmt++;
else
{
int len = 0;
WCHAR pad = L' ';
int addsign = -1;
switch (*++fmt)
{
case L'+':
addsign = 1;
fmt++;
break;
case L'%':
*dst++ = *fmt++;
continue;
}
for (;;)
{
char c = *fmt++;
switch (c)
{
case L'0':
if (len == 0)
{
pad = L'0';
continue;
}
case L'1' ... L'9':
len = len * 10 + (c - L'0');
continue;
case L'l':
continue;
case L'c':
case L'C':
{
unsigned int c = va_arg (ap, unsigned int);
if (c > L' ' && c <= 127)
*dst++ = c;
else
{
*dst++ = L'0';
*dst++ = L'x';
dst = __wrn (dst, 16, 0, c, len, pad, LMASK);
}
}
break;
case L'E':
wcscpy (dst, L"Win32 error ");
dst = __wrn (dst + sizeof ("Win32 error"), 10, 0, err, len, pad, LMASK);
break;
case L'd':
dst = wrnarg (dst, 10, addsign, len, pad);
break;
case L'D':
dst = wrnargLL (dst, 10, addsign, len, pad);
break;
case L'u':
dst = wrnarg (dst, 10, 0, len, pad);
break;
case L'U':
dst = wrnargLL (dst, 10, 0, len, pad);
break;
case L'o':
dst = wrnarg (dst, 8, 0, len, pad);
break;
case L'p':
*dst++ = L'0';
*dst++ = L'x';
/* fall through */
case L'x':
dst = wrnarg (dst, 16, 0, len, pad);
break;
case L'X':
dst = wrnargLL (dst, 16, 0, len, pad);
break;
case L'P':
if (!GetModuleFileNameW (NULL, tmp, NT_MAX_PATH))
RtlInitUnicodeString (us = &uw, L"cygwin program");
else
RtlInitUnicodeString (us = &uw, tmp);
goto fillin;
case L'.':
n = wcstoul (fmt, (wchar_t **) &fmt, 10);
if (*fmt++ != L's')
goto endfor;
case L's':
s = va_arg (ap, char *);
if (s == NULL)
s = "(null)";
sys_mbstowcs (tmp, NT_MAX_PATH, s, n < 0x7fff ? (int) n : -1);
RtlInitUnicodeString (us = &uw, tmp);
goto fillin;
break;
case L'W':
w = va_arg (ap, PWCHAR);
RtlInitUnicodeString (us = &uw, w ?: L"(null)");
goto fillin;
case L'S':
us = va_arg (ap, PUNICODE_STRING);
if (!us)
RtlInitUnicodeString (us = &uw, L"(null)");
fillin:
if (us->Length / sizeof (WCHAR) < n)
n = us->Length / sizeof (WCHAR);
w = us->Buffer;
for (unsigned int i = 0; i < n; i++)
*dst++ = *w++;
break;
default:
*dst++ = L'?';
*dst++ = fmt[-1];
}
endfor:
break;
}
}
}
*dst = L'\0';
SetLastError (err);
return dst - orig;
}
int
__small_swprintf (PWCHAR dst, const WCHAR *fmt, ...)
{
int r;
va_list ap;
va_start (ap, fmt);
r = __small_vswprintf (dst, fmt, ap);
va_end (ap);
return r;
}