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wine/dlls/user/wsprintf.c
Aric Stewart 1e5777edf5 The behavior for wsprintfA is different that for wsprintf16 in how it 
handles NULLs being passed as character parameters.
2001-09-20 19:05:58 +00:00

621 lines
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/*
* wsprintf functions
*
* Copyright 1996 Alexandre Julliard
*/
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wine/winbase16.h"
#include "wine/winuser16.h"
#include "stackframe.h"
#include "debugtools.h"
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) */
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;
INT 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++; }
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 '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++; }
switch((CHAR)*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 '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 )
{
UINT len;
if (format->flags & WPRINTF_LEFTALIGN) format->flags &= ~WPRINTF_ZEROPAD;
if (format->width > maxlen) format->width = maxlen;
switch(format->type)
{
case WPR_CHAR:
case WPR_WCHAR:
return (format->precision = 1);
case WPR_STRING:
if (!arg->lpcstr_view) arg->lpcstr_view = null_stringA;
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;
for (len = 0; !format->precision || (len < format->precision); len++)
if (!*(arg->lpcwstr_view + len)) break;
if (len > maxlen) len = maxlen;
return (format->precision = len);
case WPR_SIGNED:
len = sprintf( number, "%d", arg->int_view );
break;
case WPR_UNSIGNED:
len = sprintf( number, "%u", (UINT)arg->int_view );
break;
case WPR_HEXA:
len = sprintf( number,
(format->flags & WPRINTF_UPPER_HEX) ? "%X" : "%x",
(UINT)arg->int_view);
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;
}
/***********************************************************************
* wvsnprintf16 (Not a Windows API)
*/
static INT16 wvsnprintf16( LPSTR buffer, UINT16 maxlen, LPCSTR spec,
LPCVOID args )
{
WPRINTF_FORMAT format;
LPSTR p = buffer;
UINT i, len;
CHAR number[20];
WPRINTF_DATA cur_arg;
SEGPTR seg_str;
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: /* No Unicode in Win16 */
case WPR_CHAR:
cur_arg.char_view = VA_ARG16( args, CHAR );
break;
case WPR_WSTRING: /* No Unicode in Win16 */
case WPR_STRING:
seg_str = VA_ARG16( args, SEGPTR );
if (IsBadReadPtr16(seg_str, 1 )) cur_arg.lpcstr_view = "";
else cur_arg.lpcstr_view = MapSL( seg_str );
break;
case WPR_SIGNED:
if (!(format.flags & WPRINTF_LONG))
{
cur_arg.int_view = VA_ARG16( args, INT16 );
break;
}
/* fall through */
case WPR_HEXA:
case WPR_UNSIGNED:
if (format.flags & WPRINTF_LONG)
cur_arg.int_view = VA_ARG16( args, UINT );
else
cur_arg.int_view = VA_ARG16( args, UINT16 );
break;
case WPR_UNKNOWN:
continue;
}
len = WPRINTF_GetLen( &format, &cur_arg, number, maxlen - 1 );
if (!(format.flags & WPRINTF_LEFTALIGN))
for (i = format.precision; i < format.width; i++, maxlen--)
*p++ = ' ';
switch(format.type)
{
case WPR_WCHAR: /* No Unicode in Win16 */
case WPR_CHAR:
*p= cur_arg.char_view;
/* wsprintf16 (unlike wsprintf) ignores null characters */
if (*p != '\0') p++;
else if (format.width > 1) *p++ = ' ';
else len = 0;
break;
case WPR_WSTRING: /* No Unicode in Win16 */
case WPR_STRING:
if (len) memcpy( p, cur_arg.lpcstr_view, len );
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:
case WPR_UNSIGNED:
for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
if (len) memcpy( p, number, len );
p += len;
break;
case WPR_UNKNOWN:
continue;
}
if (format.flags & WPRINTF_LEFTALIGN)
for (i = format.precision; i < format.width; i++, maxlen--)
*p++ = ' ';
maxlen -= len;
}
*p = 0;
return (maxlen > 1) ? (INT)(p - buffer) : -1;
}
/***********************************************************************
* wvsnprintfA (USER32.@) (Not a Windows API, but we export it from USER32 anyway)
*/
INT WINAPI wvsnprintfA( LPSTR buffer, UINT maxlen, LPCSTR spec, va_list args )
{
WPRINTF_FORMAT format;
LPSTR p = buffer;
UINT i, len;
CHAR number[20];
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:
argData.int_view = va_arg( args, INT );
break;
default:
argData.wchar_view = 0;
break;
}
len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
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:
*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; i++) *p++ = (CHAR)*ptr++;
}
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:
case WPR_UNSIGNED:
for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
memcpy( p, number, len );
p += len;
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;
}
/***********************************************************************
* wvsnprintfW (USER32.@) (Not a Windows API, but we export it from USER32 anyway)
*/
INT WINAPI wvsnprintfW( LPWSTR buffer, UINT maxlen, LPCWSTR spec, va_list args )
{
WPRINTF_FORMAT format;
LPWSTR p = buffer;
UINT i, len;
CHAR number[20];
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:
argData.int_view = va_arg( args, INT );
break;
default:
argData.wchar_view = 0;
break;
}
len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
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:
*p++ = argData.char_view;
break;
case WPR_STRING:
{
LPCSTR ptr = argData.lpcstr_view;
for (i = 0; i < len; i++) *p++ = (WCHAR)*ptr++;
}
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:
case WPR_UNSIGNED:
for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
for (i = 0; i < len; i++) *p++ = (WCHAR)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;
}
/***********************************************************************
* wvsprintf (USER.421)
*/
INT16 WINAPI wvsprintf16( LPSTR buffer, LPCSTR spec, LPCVOID args )
{
INT16 res;
TRACE("for %p got:\n",buffer);
res = wvsnprintf16( buffer, 1024, spec, args );
return ( res == -1 ) ? 1024 : res;
}
/***********************************************************************
* wvsprintfA (USER32.@)
*/
INT WINAPI wvsprintfA( LPSTR buffer, LPCSTR spec, va_list args )
{
INT res = wvsnprintfA( buffer, 1024, spec, args );
return ( res == -1 ) ? 1024 : res;
}
/***********************************************************************
* wvsprintfW (USER32.@)
*/
INT WINAPI wvsprintfW( LPWSTR buffer, LPCWSTR spec, va_list args )
{
INT res = wvsnprintfW( buffer, 1024, spec, args );
return ( res == -1 ) ? 1024 : res;
}
/***********************************************************************
* _wsprintf (USER.420)
*/
INT16 WINAPIV wsprintf16(void)
{
VA_LIST16 valist;
INT16 res;
SEGPTR buffer, spec;
VA_START16( valist );
buffer = VA_ARG16( valist, SEGPTR );
spec = VA_ARG16( valist, SEGPTR );
res = wvsnprintf16( MapSL(buffer), 1024, MapSL(spec), valist );
VA_END16( valist );
return ( res == -1 ) ? 1024 : res;
}
/***********************************************************************
* wsprintfA (USER32.@)
*/
INT WINAPIV wsprintfA( LPSTR buffer, LPCSTR spec, ... )
{
va_list valist;
INT res;
va_start( valist, spec );
res = wvsnprintfA( buffer, 1024, spec, valist );
va_end( valist );
return ( res == -1 ) ? 1024 : res;
}
/***********************************************************************
* wsprintfW (USER32.@)
*/
INT WINAPIV wsprintfW( LPWSTR buffer, LPCWSTR spec, ... )
{
va_list valist;
INT res;
va_start( valist, spec );
res = wvsnprintfW( buffer, 1024, spec, valist );
va_end( valist );
return ( res == -1 ) ? 1024 : res;
}
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