Sweden-Number/dlls/ntdll/printf.h

514 lines
15 KiB
C
Raw Normal View History

/*
* ntdll printf functions
*
* Copyright 1999, 2009 Alexandre Julliard
* Copyright 2000 Jon Griffiths
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef PRINTF_WIDE
#define APICHAR wchar_t
#define APISTR(str) L"" str
#define FUNC_NAME(func) func ## _w
#else
#define APICHAR char
#define APISTR(str) str
#define FUNC_NAME(func) func ## _a
#endif
typedef struct
{
APICHAR *buf;
SIZE_T len;
SIZE_T used;
} FUNC_NAME(pf_output);
/*
* writes a string of characters to the output
* returns -1 if the string doesn't fit in the output buffer
* return the length of the string if all characters were written
*/
static int FUNC_NAME(pf_output_wstr)( FUNC_NAME(pf_output) *out, const WCHAR *str, int len )
{
SIZE_T space = out->len - out->used;
APICHAR *p = out->buf + out->used;
ULONG n;
if (len < 0) len = wcslen( str );
#ifdef PRINTF_WIDE
n = len;
if (out->buf) memcpy( p, str, min( n, space ) * sizeof(WCHAR) );
#else
RtlUnicodeToMultiByteSize( &n, str, len * sizeof(WCHAR) );
if (out->buf) RtlUnicodeToMultiByteN( p, min( n, space ), NULL, str, len * sizeof(WCHAR) );
#endif
if (out->buf && space < n) /* overflow */
{
out->used = out->len;
return -1;
}
out->used += n;
return len;
}
static int FUNC_NAME(pf_output_str)( FUNC_NAME(pf_output) *out, const char *str, int len )
{
SIZE_T space = out->len - out->used;
APICHAR *p = out->buf + out->used;
ULONG n;
if (len < 0) len = strlen( str );
#ifdef PRINTF_WIDE
RtlMultiByteToUnicodeSize( &n, str, len );
n /= sizeof(WCHAR);
if (out->buf) RtlMultiByteToUnicodeN( p, min( n, space ) * sizeof(WCHAR), NULL, str, len );
#else
n = len;
if (out->buf) memcpy( p, str, min( n, space ));
#endif
if (out->buf && space < n) /* overflow */
{
out->used = out->len;
return -1;
}
out->used += n;
return len;
}
static int FUNC_NAME(pf_output_string)( FUNC_NAME(pf_output) *out, const APICHAR *str, int len )
{
#ifdef PRINTF_WIDE
return FUNC_NAME(pf_output_wstr)( out, str, len );
#else
return FUNC_NAME(pf_output_str)( out, str, len );
#endif
}
/* pf_fill: takes care of signs, alignment, zero and field padding */
static int FUNC_NAME(pf_fill_left)( FUNC_NAME(pf_output) *out, int len, pf_flags *flags )
{
int i, r = 0;
if (flags->Sign && !(flags->Format == 'd' || flags->Format == 'i')) flags->Sign = 0;
if (flags->Sign)
{
APICHAR ch = flags->Sign;
flags->FieldLength--;
if (flags->PadZero) r = FUNC_NAME(pf_output_string)( out, &ch, 1 );
}
if (!flags->LeftAlign)
{
APICHAR ch = flags->PadZero ? '0' : ' ';
for (i = 0; i < flags->FieldLength - len && r >= 0; i++)
r = FUNC_NAME(pf_output_string)( out, &ch, 1 );
}
if (flags->Sign && !flags->PadZero && r >= 0)
{
APICHAR ch = flags->Sign;
r = FUNC_NAME(pf_output_string)( out, &ch, 1 );
}
return r;
}
static int FUNC_NAME(pf_fill_right)( FUNC_NAME(pf_output) *out, int len, pf_flags *flags )
{
int i, r = 0;
APICHAR ch = ' ';
if (!flags->LeftAlign) return 0;
for (i = 0; i < flags->FieldLength - len && r >= 0; i++)
r = FUNC_NAME(pf_output_string)( out, &ch, 1 );
return r;
}
static int FUNC_NAME(pf_output_format_wstr)( FUNC_NAME(pf_output) *out, const wchar_t *str, int len,
pf_flags *flags )
{
int r = 0;
if (len < 0)
{
/* Do not search past the length specified by the precision. */
if (flags->Precision >= 0)
{
for (len = 0; len < flags->Precision; len++) if (!str[len]) break;
}
else len = wcslen( str );
}
if (flags->Precision >= 0 && flags->Precision < len) len = flags->Precision;
r = FUNC_NAME(pf_fill_left)( out, len, flags );
if (r >= 0) r = FUNC_NAME(pf_output_wstr)( out, str, len );
if (r >= 0) r = FUNC_NAME(pf_fill_right)( out, len, flags );
return r;
}
static int FUNC_NAME(pf_output_format_str)( FUNC_NAME(pf_output) *out, const char *str, int len,
pf_flags *flags )
{
int r = 0;
if (len < 0)
{
/* Do not search past the length specified by the precision. */
if (flags->Precision >= 0)
{
for (len = 0; len < flags->Precision; len++) if (!str[len]) break;
}
else len = strlen(str);
}
if (flags->Precision >= 0 && flags->Precision < len) len = flags->Precision;
r = FUNC_NAME(pf_fill_left)( out, len, flags );
if (r >= 0) r = FUNC_NAME(pf_output_str)( out, str, len );
if (r >= 0) r = FUNC_NAME(pf_fill_right)( out, len, flags );
return r;
}
static int FUNC_NAME(pf_output_format)( FUNC_NAME(pf_output) *out, const APICHAR *str, int len,
pf_flags *flags )
{
#ifdef PRINTF_WIDE
return FUNC_NAME(pf_output_format_wstr)( out, str, len, flags );
#else
return FUNC_NAME(pf_output_format_str)( out, str, len, flags );
#endif
}
static int FUNC_NAME(pf_handle_string_format)( FUNC_NAME(pf_output) *out, const void* str, int len,
pf_flags *flags, BOOL inverted )
{
if (str == NULL) /* catch NULL pointer */
return FUNC_NAME(pf_output_format)( out, APISTR("(null)"), -1, flags );
/* prefixes take priority over %c,%s vs. %C,%S, so we handle them first */
if (flags->WideString || flags->IntegerLength == LEN_LONG)
return FUNC_NAME(pf_output_format_wstr)( out, str, len, flags );
if (flags->IntegerLength == LEN_SHORT)
return FUNC_NAME(pf_output_format_str)( out, str, len, flags );
/* %s,%c -> chars in ansi functions & wchars in unicode
* %S,%C -> wchars in ansi functions & chars in unicode */
if (!inverted) return FUNC_NAME(pf_output_format)( out, str, len, flags);
#ifdef PRINTF_WIDE
return FUNC_NAME(pf_output_format_str)( out, str, len, flags );
#else
return FUNC_NAME(pf_output_format_wstr)( out, str, len, flags );
#endif
}
/* pf_integer_conv: prints x to buf, including alternate formats and
additional precision digits, but not field characters or the sign */
static void FUNC_NAME(pf_integer_conv)( APICHAR *buf, pf_flags *flags, LONGLONG x )
{
unsigned int base;
const APICHAR *digits;
int i, j, k;
if( flags->Format == 'o' )
base = 8;
else if( flags->Format == 'x' || flags->Format == 'X' )
base = 16;
else
base = 10;
if( flags->Format == 'X' )
digits = APISTR("0123456789ABCDEFX");
else
digits = APISTR("0123456789abcdefx");
if( x < 0 && ( flags->Format == 'd' || flags->Format == 'i' ) )
{
x = -x;
flags->Sign = '-';
}
i = 0;
if( x == 0 )
{
flags->Alternate = FALSE;
if( flags->Precision )
buf[i++] = '0';
}
else
while( x != 0 )
{
j = (ULONGLONG) x % base;
x = (ULONGLONG) x / base;
buf[i++] = digits[j];
}
k = flags->Precision - i;
while( k-- > 0 )
buf[i++] = '0';
if( flags->Alternate )
{
if( base == 16 )
{
buf[i++] = digits[16];
buf[i++] = '0';
}
else if( base == 8 && buf[i-1] != '0' )
buf[i++] = '0';
}
/* Adjust precision so pf_fill won't truncate the number later */
flags->Precision = i;
buf[i] = '\0';
j = 0;
while(--i > j) {
APICHAR tmp = buf[j];
buf[j] = buf[i];
buf[i] = tmp;
j++;
}
}
static int FUNC_NAME(pf_vsnprintf)( FUNC_NAME(pf_output) *out, const APICHAR *format, __ms_va_list valist )
{
int r;
const APICHAR *q, *p = format;
pf_flags flags;
while (*p)
{
for (q = p; *q; q++) if (*q == '%') break;
if (q != p)
{
r = FUNC_NAME(pf_output_string)(out, p, q - p);
if (r < 0) return r;
p = q;
if (!*p) break;
}
p++;
/* output a single % character */
if( *p == '%' )
{
r = FUNC_NAME(pf_output_string)(out, p++, 1);
if( r<0 )
return r;
continue;
}
/* parse the flags */
memset( &flags, 0, sizeof flags );
while (*p)
{
if( *p == '+' || *p == ' ' )
{
if ( flags.Sign != '+' )
flags.Sign = *p;
}
else if( *p == '-' )
flags.LeftAlign = TRUE;
else if( *p == '0' )
flags.PadZero = TRUE;
else if( *p == '#' )
flags.Alternate = TRUE;
else
break;
p++;
}
/* deal with the field width specifier */
flags.FieldLength = 0;
if( *p == '*' )
{
flags.FieldLength = va_arg( valist, int );
if (flags.FieldLength < 0)
{
flags.LeftAlign = TRUE;
flags.FieldLength = -flags.FieldLength;
}
p++;
}
else while (*p >= '0' && *p <= '9')
{
flags.FieldLength *= 10;
flags.FieldLength += *p++ - '0';
}
/* deal with precision */
flags.Precision = -1;
if( *p == '.' )
{
flags.Precision = 0;
p++;
if( *p == '*' )
{
flags.Precision = va_arg( valist, int );
p++;
}
else while (*p >= '0' && *p <= '9')
{
flags.Precision *= 10;
flags.Precision += *p++ - '0';
}
}
/* deal with integer width modifier */
while( *p )
{
if (*p == 'l' && *(p+1) == 'l')
{
flags.IntegerDouble = TRUE;
p += 2;
}
else if( *p == 'l' )
{
flags.IntegerLength = LEN_LONG;
p++;
}
else if( *p == 'L' )
{
p++;
}
else if( *p == 'h')
{
flags.IntegerLength = LEN_SHORT;
p++;
}
else if( *p == 'I' )
{
if( *(p+1) == '6' && *(p+2) == '4' )
{
flags.IntegerDouble = TRUE;
p += 3;
}
else if( *(p+1) == '3' && *(p+2) == '2' )
p += 3;
else if( p[1] && strchr( "diouxX", p[1] ) )
{
if( sizeof(void *) == 8 )
flags.IntegerDouble = TRUE;
p++;
}
else if ((p[1] >= '0' && p[1] <= '9') || !p[1])
break;
else
p++;
}
else if( *p == 'w' )
{
flags.WideString = TRUE;
p++;
}
else if ((*p == 'z' || *p == 't') && p[1] && strchr("diouxX", p[1]))
{
flags.IntegerNative = TRUE;
p++;
}
else if (*p == 'j')
{
flags.IntegerDouble = TRUE;
p++;
}
else if( *p == 'F' )
p++; /* ignore */
else
break;
}
flags.Format = *p;
r = 0;
if (flags.Format == '$')
{
FIXME("Positional parameters are not supported (%s)\n", FUNC_NAME(wine_dbgstr)(format));
return -1;
}
/* output a string */
if( flags.Format == 's' || flags.Format == 'S' )
r = FUNC_NAME(pf_handle_string_format)( out, va_arg(valist, const void*), -1,
&flags, (flags.Format == 'S') );
/* output a single character */
else if( flags.Format == 'c' || flags.Format == 'C' )
{
APICHAR ch = (APICHAR)va_arg( valist, int );
r = FUNC_NAME(pf_handle_string_format)( out, &ch, 1, &flags, (flags.Format == 'C') );
}
/* output a pointer */
else if( flags.Format == 'p' )
{
APICHAR pointer[32];
void *ptr = va_arg( valist, void * );
int prec = flags.Precision;
flags.Format = 'X';
flags.PadZero = TRUE;
flags.Precision = 2*sizeof(void*);
FUNC_NAME(pf_integer_conv)( pointer, &flags, (ULONG_PTR)ptr );
flags.PadZero = FALSE;
flags.Precision = prec;
r = FUNC_NAME(pf_output_format)( out, pointer, -1, &flags );
}
/* deal with %n */
else if( flags.Format == 'n' )
{
int *x = va_arg(valist, int *);
*x = out->used;
}
else if( flags.Format && strchr("diouxX", flags.Format ))
{
APICHAR number[40], *x = number;
int max_len;
/* 0 padding is added after '0x' if Alternate flag is in use */
if((flags.Format=='x' || flags.Format=='X') && flags.PadZero && flags.Alternate
&& !flags.LeftAlign && flags.Precision<flags.FieldLength-2)
flags.Precision = flags.FieldLength - 2;
max_len = (flags.FieldLength>flags.Precision ? flags.FieldLength : flags.Precision) + 10;
if(max_len > ARRAY_SIZE(number))
if (!(x = RtlAllocateHeap( GetProcessHeap(), 0, max_len * sizeof(*x) ))) return -1;
if(flags.IntegerDouble || (flags.IntegerNative && sizeof(void*) == 8))
FUNC_NAME(pf_integer_conv)( x, &flags, va_arg(valist, LONGLONG) );
else if(flags.Format=='d' || flags.Format=='i')
FUNC_NAME(pf_integer_conv)( x, &flags, flags.IntegerLength != LEN_SHORT ?
va_arg(valist, int) : (short)va_arg(valist, int) );
else
FUNC_NAME(pf_integer_conv)( x, &flags, flags.IntegerLength != LEN_SHORT ?
(unsigned int)va_arg(valist, int) : (unsigned short)va_arg(valist, int) );
r = FUNC_NAME(pf_output_format)( out, x, -1, &flags );
if( x != number )
RtlFreeHeap( GetProcessHeap(), 0, x );
}
else
continue;
if( r<0 )
return r;
p++;
}
return out->used;
}
#undef APICHAR
#undef APISTR
#undef FUNC_NAME