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wine/dlls/shlwapi/wsprintf.c
Alexandre Julliard 56af82b165 shlwapi: Use the standard va_list instead of __ms_va_list. 
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2021-10-22 11:12:52 +02:00

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/*
* wsprintf functions
*
* Copyright 1996 Alexandre Julliard
*
* 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
*
* NOTE:
* This code is duplicated in user32. If you change something here make sure
* to change it in user32 too.
*/
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include "windef.h"
#include "winbase.h"
#define NO_SHLWAPI_REG
#include "shlwapi.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(string);
#define WPRINTF_LEFTALIGN 0x0001 /* Align output on the left ('-' prefix) */
#define WPRINTF_PREFIX_HEX 0x0002 /* Prefix hex with 0x ('#' prefix) */
#define WPRINTF_ZEROPAD 0x0004 /* Pad with zeros ('0' prefix) */
#define WPRINTF_LONG 0x0008 /* Long arg ('l' prefix) */
#define WPRINTF_SHORT 0x0010 /* Short arg ('h' prefix) */
#define WPRINTF_UPPER_HEX 0x0020 /* Upper-case hex ('X' specifier) */
#define WPRINTF_WIDE 0x0040 /* Wide arg ('w' prefix) */
#define WPRINTF_INTPTR 0x0080 /* Pointer-size arg ('I' prefix) */
#define WPRINTF_I64 0x0100 /* 64-bit arg ('I64' prefix) */
typedef enum
{
WPR_UNKNOWN,
WPR_CHAR,
WPR_WCHAR,
WPR_STRING,
WPR_WSTRING,
WPR_SIGNED,
WPR_UNSIGNED,
WPR_HEXA
} WPRINTF_TYPE;
typedef struct
{
UINT flags;
UINT width;
UINT precision;
WPRINTF_TYPE type;
} WPRINTF_FORMAT;
typedef union {
WCHAR wchar_view;
CHAR char_view;
LPCSTR lpcstr_view;
LPCWSTR lpcwstr_view;
LONGLONG int_view;
} WPRINTF_DATA;
static const CHAR null_stringA[] = "(null)";
static const WCHAR null_stringW[] = { '(', 'n', 'u', 'l', 'l', ')', 0 };
/***********************************************************************
* WPRINTF_ParseFormatA
*
* Parse a format specification. A format specification has the form:
*
* [-][#][0][width][.precision]type
*
* Return value is the length of the format specification in characters.
*/
static INT WPRINTF_ParseFormatA( LPCSTR format, WPRINTF_FORMAT *res )
{
LPCSTR p = format;
res->flags = 0;
res->width = 0;
res->precision = 0;
if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
while ((*p >= '0') && (*p <= '9')) /* width field */
{
res->width = res->width * 10 + *p - '0';
p++;
}
if (*p == '.') /* precision field */
{
p++;
while ((*p >= '0') && (*p <= '9'))
{
res->precision = res->precision * 10 + *p - '0';
p++;
}
}
if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
else if (*p == 'I')
{
if (p[1] == '6' && p[2] == '4') { res->flags |= WPRINTF_I64; p += 3; }
else if (p[1] == '3' && p[2] == '2') p += 3;
else { res->flags |= WPRINTF_INTPTR; p++; }
}
switch(*p)
{
case 'c':
res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
break;
case 'C':
res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
break;
case 'd':
case 'i':
res->type = WPR_SIGNED;
break;
case 's':
res->type = (res->flags & (WPRINTF_LONG |WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
break;
case 'S':
res->type = (res->flags & (WPRINTF_SHORT|WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
break;
case 'u':
res->type = WPR_UNSIGNED;
break;
case 'p':
res->width = 2 * sizeof(void *);
res->flags |= WPRINTF_ZEROPAD | WPRINTF_INTPTR;
/* fall through */
case 'X':
res->flags |= WPRINTF_UPPER_HEX;
/* fall through */
case 'x':
res->type = WPR_HEXA;
break;
default: /* unknown format char */
res->type = WPR_UNKNOWN;
p--; /* print format as normal char */
break;
}
return (INT)(p - format) + 1;
}
/***********************************************************************
* WPRINTF_ParseFormatW
*
* Parse a format specification. A format specification has the form:
*
* [-][#][0][width][.precision]type
*
* Return value is the length of the format specification in characters.
*/
static INT WPRINTF_ParseFormatW( LPCWSTR format, WPRINTF_FORMAT *res )
{
LPCWSTR p = format;
res->flags = 0;
res->width = 0;
res->precision = 0;
if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
while ((*p >= '0') && (*p <= '9')) /* width field */
{
res->width = res->width * 10 + *p - '0';
p++;
}
if (*p == '.') /* precision field */
{
p++;
while ((*p >= '0') && (*p <= '9'))
{
res->precision = res->precision * 10 + *p - '0';
p++;
}
}
if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
else if (*p == 'I')
{
if (p[1] == '6' && p[2] == '4') { res->flags |= WPRINTF_I64; p += 3; }
else if (p[1] == '3' && p[2] == '2') p += 3;
else { res->flags |= WPRINTF_INTPTR; p++; }
}
switch(*p)
{
case 'c':
res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
break;
case 'C':
res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
break;
case 'd':
case 'i':
res->type = WPR_SIGNED;
break;
case 's':
res->type = ((res->flags & WPRINTF_SHORT) && !(res->flags & WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
break;
case 'S':
res->type = (res->flags & (WPRINTF_LONG|WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
break;
case 'u':
res->type = WPR_UNSIGNED;
break;
case 'p':
res->width = 2 * sizeof(void *);
res->flags |= WPRINTF_ZEROPAD | WPRINTF_INTPTR;
/* fall through */
case 'X':
res->flags |= WPRINTF_UPPER_HEX;
/* fall through */
case 'x':
res->type = WPR_HEXA;
break;
default:
res->type = WPR_UNKNOWN;
p--; /* print format as normal char */
break;
}
return (INT)(p - format) + 1;
}
/***********************************************************************
* WPRINTF_GetLen
*/
static UINT WPRINTF_GetLen( WPRINTF_FORMAT *format, WPRINTF_DATA *arg,
LPSTR number, UINT maxlen, BOOL dst_is_wide )
{
UINT len;
if (format->flags & WPRINTF_LEFTALIGN) format->flags &= ~WPRINTF_ZEROPAD;
if (format->width > maxlen) format->width = maxlen;
switch(format->type)
{
case WPR_CHAR:
return (format->precision = 1);
case WPR_WCHAR:
if (dst_is_wide) len = 1;
else len = WideCharToMultiByte( CP_ACP, 0, &arg->wchar_view, 1, NULL, 0, NULL, NULL );
return (format->precision = len);
case WPR_STRING:
if (!arg->lpcstr_view) arg->lpcstr_view = null_stringA;
if (dst_is_wide)
{
LPCSTR p = arg->lpcstr_view;
for (len = 0; (!format->precision || len < format->precision) && *p; p++)
{
/* This isn't applicable for UTF-8 and UTF-7 */
if (IsDBCSLeadByte( *p )) p++;
len++;
if (!*p) break;
}
}
else
{
for (len = 0; !format->precision || (len < format->precision); len++)
if (!*(arg->lpcstr_view + len)) break;
}
if (len > maxlen) len = maxlen;
return (format->precision = len);
case WPR_WSTRING:
if (!arg->lpcwstr_view) arg->lpcwstr_view = null_stringW;
if (dst_is_wide)
{
for (len = 0; !format->precision || (len < format->precision); len++)
if (!*(arg->lpcwstr_view + len)) break;
}
else
{
LPCWSTR p = arg->lpcwstr_view;
for (len = 0; (!format->precision || len < format->precision) && *p; p++)
len += WideCharToMultiByte( CP_ACP, 0, p, 1, NULL, 0, NULL, NULL );
if (format->precision && len > format->precision) len = format->precision;
}
if (len > maxlen) len = maxlen;
return (format->precision = len);
case WPR_SIGNED:
case WPR_UNSIGNED:
case WPR_HEXA:
{
const char *digits = (format->flags & WPRINTF_UPPER_HEX) ? "0123456789ABCDEF" : "0123456789abcdef";
ULONGLONG num = arg->int_view;
int base = format->type == WPR_HEXA ? 16 : 10;
char buffer[20], *p = buffer, *dst = number;
if (format->type == WPR_SIGNED && arg->int_view < 0)
{
*dst++ = '-';
num = -arg->int_view;
}
if (format->flags & WPRINTF_INTPTR) num = (UINT_PTR)num;
else if (!(format->flags & WPRINTF_I64)) num = (UINT)num;
do
{
*p++ = digits[num % base];
num /= base;
} while (num);
while (p > buffer) *dst++ = *(--p);
*dst = 0;
len = dst - number;
break;
}
default:
return 0;
}
if (len > maxlen) len = maxlen;
if (format->precision < len) format->precision = len;
if (format->precision > maxlen) format->precision = maxlen;
if ((format->flags & WPRINTF_ZEROPAD) && (format->width > format->precision))
format->precision = format->width;
if (format->flags & WPRINTF_PREFIX_HEX) len += 2;
return len;
}
/***********************************************************************
* wvnsprintfA (SHLWAPI.@)
*
* Print formatted output to a string, up to a maximum number of chars.
*
* PARAMS
* buffer [O] Destination for output string
* maxlen [I] Maximum number of characters to write
* spec [I] Format string
*
* RETURNS
* Success: The number of characters written.
* Failure: -1.
*/
INT WINAPI wvnsprintfA( LPSTR buffer, INT maxlen, LPCSTR spec, va_list args )
{
WPRINTF_FORMAT format;
LPSTR p = buffer;
UINT i, len, sign;
CHAR number[21]; /* 64bit number can be 18446744073709551616 which is 20 chars. and a \0 */
WPRINTF_DATA argData;
TRACE("%p %u %s\n", buffer, maxlen, debugstr_a(spec));
while (*spec && (maxlen > 1))
{
if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
spec++;
if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
spec += WPRINTF_ParseFormatA( spec, &format );
switch(format.type)
{
case WPR_WCHAR:
argData.wchar_view = (WCHAR)va_arg( args, int );
break;
case WPR_CHAR:
argData.char_view = (CHAR)va_arg( args, int );
break;
case WPR_STRING:
argData.lpcstr_view = va_arg( args, LPCSTR );
break;
case WPR_WSTRING:
argData.lpcwstr_view = va_arg( args, LPCWSTR );
break;
case WPR_HEXA:
case WPR_SIGNED:
case WPR_UNSIGNED:
if (format.flags & WPRINTF_INTPTR) argData.int_view = va_arg(args, INT_PTR);
else if (format.flags & WPRINTF_I64) argData.int_view = va_arg(args, LONGLONG);
else argData.int_view = va_arg(args, INT);
break;
default:
argData.wchar_view = 0;
break;
}
len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1, FALSE );
sign = 0;
if (!(format.flags & WPRINTF_LEFTALIGN))
for (i = format.precision; i < format.width; i++, maxlen--)
*p++ = ' ';
switch(format.type)
{
case WPR_WCHAR:
{
CHAR mb[5];
if (WideCharToMultiByte( CP_ACP, 0, &argData.wchar_view, 1, mb, sizeof(mb), NULL, NULL ))
{
memcpy( p, mb, len );
p += len;
}
}
break;
case WPR_CHAR:
*p++ = argData.char_view;
break;
case WPR_STRING:
memcpy( p, argData.lpcstr_view, len );
p += len;
break;
case WPR_WSTRING:
{
LPCWSTR ptr = argData.lpcwstr_view;
for (i = 0; i < len; ptr++)
{
CHAR mb[5]; /* 5 is MB_LEN_MAX */
int ret = WideCharToMultiByte( CP_ACP, 0, ptr, 1, mb, sizeof(mb), NULL, NULL );
i += ret;
if (i > len) ret = len - (p - buffer);
memcpy( p, mb, ret );
p += ret;
}
}
break;
case WPR_HEXA:
if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
{
*p++ = '0';
*p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
maxlen -= 2;
len -= 2;
}
/* fall through */
case WPR_SIGNED:
/* Transfer the sign now, just in case it will be zero-padded*/
if (number[0] == '-')
{
*p++ = '-';
sign = 1;
}
/* fall through */
case WPR_UNSIGNED:
for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
memcpy( p, number + sign, len - sign );
p += len - sign;
break;
case WPR_UNKNOWN:
continue;
}
if (format.flags & WPRINTF_LEFTALIGN)
for (i = format.precision; i < format.width; i++, maxlen--)
*p++ = ' ';
maxlen -= len;
}
*p = 0;
TRACE("%s\n",debugstr_a(buffer));
return (maxlen > 1) ? (INT)(p - buffer) : -1;
}
/***********************************************************************
* wvnsprintfW (SHLWAPI.@)
*
* See wvnsprintfA.
*/
INT WINAPI wvnsprintfW( LPWSTR buffer, INT maxlen, LPCWSTR spec, va_list args )
{
WPRINTF_FORMAT format;
LPWSTR p = buffer;
UINT i, len, sign;
CHAR number[21]; /* 64bit number can be 18446744073709551616 which is 20 chars. and a \0 */
WPRINTF_DATA argData;
TRACE("%p %u %s\n", buffer, maxlen, debugstr_w(spec));
while (*spec && (maxlen > 1))
{
if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
spec++;
if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
spec += WPRINTF_ParseFormatW( spec, &format );
switch(format.type)
{
case WPR_WCHAR:
argData.wchar_view = (WCHAR)va_arg( args, int );
break;
case WPR_CHAR:
argData.char_view = (CHAR)va_arg( args, int );
break;
case WPR_STRING:
argData.lpcstr_view = va_arg( args, LPCSTR );
break;
case WPR_WSTRING:
argData.lpcwstr_view = va_arg( args, LPCWSTR );
break;
case WPR_HEXA:
case WPR_SIGNED:
case WPR_UNSIGNED:
if (format.flags & WPRINTF_INTPTR) argData.int_view = va_arg(args, INT_PTR);
else if (format.flags & WPRINTF_I64) argData.int_view = va_arg(args, LONGLONG);
else argData.int_view = va_arg(args, INT);
break;
default:
argData.wchar_view = 0;
break;
}
len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1, TRUE );
sign = 0;
if (!(format.flags & WPRINTF_LEFTALIGN))
for (i = format.precision; i < format.width; i++, maxlen--)
*p++ = ' ';
switch(format.type)
{
case WPR_WCHAR:
*p++ = argData.wchar_view;
break;
case WPR_CHAR:
{
WCHAR wc;
if (!IsDBCSLeadByte( (BYTE)argData.char_view )
&& MultiByteToWideChar( CP_ACP, 0, &argData.char_view, 1, &wc, 1 ) > 0)
*p++ = wc;
else
*p++ = 0;
break;
}
case WPR_STRING:
{
LPCSTR ptr = argData.lpcstr_view;
for (i = 0; i < len; i++)
{
WCHAR buf[2]; /* for LeadByte + NUL case, we need 2 WCHARs. */
int ret, mb_len = IsDBCSLeadByte( *ptr ) ? 2 : 1;
ret = MultiByteToWideChar( CP_ACP, 0, ptr, mb_len, buf, ARRAY_SIZE( buf ));
*p++ = buf[ret - 1];
ptr += mb_len;
}
}
break;
case WPR_WSTRING:
if (len) memcpy( p, argData.lpcwstr_view, len * sizeof(WCHAR) );
p += len;
break;
case WPR_HEXA:
if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
{
*p++ = '0';
*p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
maxlen -= 2;
len -= 2;
}
/* fall through */
case WPR_SIGNED:
/* Transfer the sign now, just in case it will be zero-padded*/
if (number[0] == '-')
{
*p++ = '-';
sign = 1;
}
/* fall through */
case WPR_UNSIGNED:
for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
for (i = sign; i < len; i++) *p++ = (BYTE)number[i];
break;
case WPR_UNKNOWN:
continue;
}
if (format.flags & WPRINTF_LEFTALIGN)
for (i = format.precision; i < format.width; i++, maxlen--)
*p++ = ' ';
maxlen -= len;
}
*p = 0;
TRACE("%s\n",debugstr_w(buffer));
return (maxlen > 1) ? (INT)(p - buffer) : -1;
}
/*************************************************************************
* wnsprintfA (SHLWAPI.@)
*
* Print formatted output to a string, up to a maximum number of chars.
*
* PARAMS
* lpOut [O] Destination for output string
* cchLimitIn [I] Maximum number of characters to write
* lpFmt [I] Format string
*
* RETURNS
* Success: The number of characters written.
* Failure: -1.
*/
int WINAPIV wnsprintfA(LPSTR lpOut, int cchLimitIn, LPCSTR lpFmt, ...)
{
va_list valist;
INT res;
va_start( valist, lpFmt );
res = wvnsprintfA( lpOut, cchLimitIn, lpFmt, valist );
va_end( valist );
return res;
}
/*************************************************************************
* wnsprintfW (SHLWAPI.@)
*
* See wnsprintfA.
*/
int WINAPIV wnsprintfW(LPWSTR lpOut, int cchLimitIn, LPCWSTR lpFmt, ...)
{
va_list valist;
INT res;
va_start( valist, lpFmt );
res = wvnsprintfW( lpOut, cchLimitIn, lpFmt, valist );
va_end( valist );
return res;
}
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