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wine/dlls/msvcrt/wcs.c

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/*
* msvcrt.dll wide-char functions
*
* Copyright 1999 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
*/
#include <limits.h>
#include <stdio.h>
#include <math.h>
#include <assert.h>
#include "msvcrt.h"
#include "winnls.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
/*********************************************************************
* _wcsdup (MSVCRT.@)
*/
MSVCRT_wchar_t* CDECL _wcsdup( const MSVCRT_wchar_t* str )
{
MSVCRT_wchar_t* ret = NULL;
if (str)
{
int size = (strlenW(str) + 1) * sizeof(MSVCRT_wchar_t);
ret = MSVCRT_malloc( size );
if (ret) memcpy( ret, str, size );
}
return ret;
}
/*********************************************************************
* _wcsicoll (MSVCRT.@)
*/
INT CDECL _wcsicoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* str2 )
{
/* FIXME: handle collates */
return strcmpiW( str1, str2 );
}
/*********************************************************************
* _wcsnset (MSVCRT.@)
*/
MSVCRT_wchar_t* CDECL _wcsnset( MSVCRT_wchar_t* str, MSVCRT_wchar_t c, MSVCRT_size_t n )
{
MSVCRT_wchar_t* ret = str;
while ((n-- > 0) && *str) *str++ = c;
return ret;
}
/*********************************************************************
* _wcsrev (MSVCRT.@)
*/
MSVCRT_wchar_t* CDECL _wcsrev( MSVCRT_wchar_t* str )
{
MSVCRT_wchar_t* ret = str;
MSVCRT_wchar_t* end = str + strlenW(str) - 1;
while (end > str)
{
MSVCRT_wchar_t t = *end;
*end-- = *str;
*str++ = t;
}
return ret;
}
/*********************************************************************
* _wcsset (MSVCRT.@)
*/
MSVCRT_wchar_t* CDECL _wcsset( MSVCRT_wchar_t* str, MSVCRT_wchar_t c )
{
MSVCRT_wchar_t* ret = str;
while (*str) *str++ = c;
return ret;
}
/*********************************************************************
* wcstod (MSVCRT.@)
*/
double CDECL MSVCRT_wcstod(const MSVCRT_wchar_t* lpszStr, MSVCRT_wchar_t** end)
{
const MSVCRT_wchar_t* str = lpszStr;
int negative = 0;
double ret = 0, divisor = 10.0;
TRACE("(%s,%p) semi-stub\n", debugstr_w(lpszStr), end);
/* FIXME:
* - Should set errno on failure
* - Should fail on overflow
* - Need to check which input formats are allowed
*/
while (isspaceW(*str))
str++;
if (*str == '-')
{
negative = 1;
str++;
}
while (isdigitW(*str))
{
ret = ret * 10.0 + (*str - '0');
str++;
}
if (*str == '.')
str++;
while (isdigitW(*str))
{
ret = ret + (*str - '0') / divisor;
divisor *= 10;
str++;
}
if (*str == 'E' || *str == 'e' || *str == 'D' || *str == 'd')
{
int negativeExponent = 0;
int exponent = 0;
if (*(++str) == '-')
{
negativeExponent = 1;
str++;
}
while (isdigitW(*str))
{
exponent = exponent * 10 + (*str - '0');
str++;
}
if (exponent != 0)
{
if (negativeExponent)
ret = ret / pow(10.0, exponent);
else
ret = ret * pow(10.0, exponent);
}
}
if (negative)
ret = -ret;
if (end)
*end = (MSVCRT_wchar_t*)str;
TRACE("returning %g\n", ret);
return ret;
}
typedef struct pf_output_t
{
int used;
int len;
BOOL unicode;
union {
LPWSTR W;
LPSTR A;
} buf;
} pf_output;
typedef struct pf_flags_t
{
char Sign, LeftAlign, Alternate, PadZero;
int FieldLength, Precision;
char IntegerLength, IntegerDouble;
char WideString;
char Format;
} pf_flags;
/*
* 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 inline int pf_output_stringW( pf_output *out, LPCWSTR str, int len )
{
int space = out->len - out->used;
if( len < 0 )
len = strlenW( str );
if( out->unicode )
{
LPWSTR p = out->buf.W + out->used;
if( space >= len )
{
memcpy( p, str, len*sizeof(WCHAR) );
out->used += len;
return len;
}
if( space > 0 )
memcpy( p, str, space*sizeof(WCHAR) );
out->used += len;
}
else
{
int n = WideCharToMultiByte( CP_ACP, 0, str, len, NULL, 0, NULL, NULL );
LPSTR p = out->buf.A + out->used;
if( space >= n )
{
WideCharToMultiByte( CP_ACP, 0, str, len, p, n, NULL, NULL );
out->used += n;
return len;
}
if( space > 0 )
WideCharToMultiByte( CP_ACP, 0, str, len, p, space, NULL, NULL );
out->used += n;
}
return -1;
}
static inline int pf_output_stringA( pf_output *out, LPCSTR str, int len )
{
int space = out->len - out->used;
if( len < 0 )
len = strlen( str );
if( !out->unicode )
{
LPSTR p = out->buf.A + out->used;
if( space >= len )
{
memcpy( p, str, len );
out->used += len;
return len;
}
if( space > 0 )
memcpy( p, str, space );
out->used += len;
}
else
{
int n = MultiByteToWideChar( CP_ACP, 0, str, len, NULL, 0 );
LPWSTR p = out->buf.W + out->used;
if( space >= n )
{
MultiByteToWideChar( CP_ACP, 0, str, len, p, n );
out->used += n;
return len;
}
if( space > 0 )
MultiByteToWideChar( CP_ACP, 0, str, len, p, space );
out->used += n;
}
return -1;
}
/* pf_fill: takes care of signs, alignment, zero and field padding */
static inline int pf_fill( pf_output *out, int len, pf_flags *flags, char left )
{
int i, r = 0;
if( flags->Sign && !( flags->Format == 'd' || flags->Format == 'i' ) )
flags->Sign = 0;
if( left && flags->Sign )
{
flags->FieldLength--;
if( flags->PadZero )
r = pf_output_stringA( out, &flags->Sign, 1 );
}
if( ( !left && flags->LeftAlign ) ||
( left && !flags->LeftAlign ))
{
for( i=0; (i<(flags->FieldLength-len)) && (r>=0); i++ )
{
if( left && flags->PadZero )
r = pf_output_stringA( out, "0", 1 );
else
r = pf_output_stringA( out, " ", 1 );
}
}
if( left && flags->Sign && !flags->PadZero )
r = pf_output_stringA( out, &flags->Sign, 1 );
return r;
}
static inline int pf_output_format_W( pf_output *out, LPCWSTR str,
int len, pf_flags *flags )
{
int r = 0;
if( len < 0 )
len = strlenW( str );
if (flags->Precision >= 0 && flags->Precision < len)
len = flags->Precision;
r = pf_fill( out, len, flags, 1 );
if( r>=0 )
r = pf_output_stringW( out, str, len );
if( r>=0 )
r = pf_fill( out, len, flags, 0 );
return r;
}
static inline int pf_output_format_A( pf_output *out, LPCSTR str,
int len, pf_flags *flags )
{
int r = 0;
if( len < 0 )
len = strlen( str );
if (flags->Precision >= 0 && flags->Precision < len)
len = flags->Precision;
r = pf_fill( out, len, flags, 1 );
if( r>=0 )
r = pf_output_stringA( out, str, len );
if( r>=0 )
r = pf_fill( out, len, flags, 0 );
return r;
}
static int pf_handle_string_format( pf_output *out, const void* str, int len,
pf_flags *flags, BOOL capital_letter)
{
if(str == NULL) /* catch NULL pointer */
return pf_output_format_A( out, "(null)", -1, flags);
/* prefixes take priority over %c,%s vs. %C,%S, so we handle them first */
if(flags->WideString || flags->IntegerLength == 'l')
return pf_output_format_W( out, str, len, flags);
if(flags->IntegerLength == 'h')
return pf_output_format_A( out, str, len, flags);
/* %s,%c -> chars in ansi functions & wchars in unicode
* %S,%C -> wchars in ansi functions & chars in unicode */
if( capital_letter == out->unicode) /* either both TRUE or both FALSE */
return pf_output_format_A( out, str, len, flags);
else
return pf_output_format_W( out, str, len, flags);
}
static inline BOOL pf_is_integer_format( char fmt )
{
static const char float_fmts[] = "diouxX";
if (!fmt)
return FALSE;
return strchr( float_fmts, fmt ) ? TRUE : FALSE;
}
static inline BOOL pf_is_double_format( char fmt )
{
static const char float_fmts[] = "aeEfgG";
if (!fmt)
return FALSE;
return strchr( float_fmts, fmt ) ? TRUE : FALSE;
}
static inline BOOL pf_is_valid_format( char fmt )
{
static const char float_fmts[] = "acCdeEfgGinouxX";
if (!fmt)
return FALSE;
return strchr( float_fmts, fmt ) ? TRUE : FALSE;
}
static void pf_rebuild_format_string( char *p, pf_flags *flags )
{
*p++ = '%';
if( flags->Sign )
*p++ = flags->Sign;
if( flags->LeftAlign )
*p++ = flags->LeftAlign;
if( flags->Alternate )
*p++ = flags->Alternate;
if( flags->PadZero )
*p++ = flags->PadZero;
if( flags->FieldLength )
{
sprintf(p, "%d", flags->FieldLength);
p += strlen(p);
}
if( flags->Precision >= 0 )
{
sprintf(p, ".%d", flags->Precision);
p += strlen(p);
}
*p++ = flags->Format;
*p++ = 0;
}
/* pf_integer_conv: prints x to buf, including alternate formats and
additional precision digits, but not field characters or the sign */
static void pf_integer_conv( char *buf, int buf_len, pf_flags *flags,
LONGLONG x )
{
unsigned int base;
const char *digits;
int i, j, k;
char number[40], *tmp = number;
if( buf_len > sizeof number )
tmp = HeapAlloc( GetProcessHeap(), 0, buf_len );
base = 10;
if( flags->Format == 'o' )
base = 8;
else if( flags->Format == 'x' || flags->Format == 'X' )
base = 16;
if( flags->Format == 'X' )
digits = "0123456789ABCDEFX";
else
digits = "0123456789abcdefx";
if( x < 0 && ( flags->Format == 'd' || flags->Format == 'i' ) )
{
x = -x;
flags->Sign = '-';
}
/* Do conversion (backwards) */
i = 0;
if( x == 0 && flags->Precision )
tmp[i++] = '0';
else
while( x != 0 )
{
j = (ULONGLONG) x % base;
x = (ULONGLONG) x / base;
tmp[i++] = digits[j];
}
k = flags->Precision - i;
while( k-- > 0 )
tmp[i++] = '0';
if( flags->Alternate )
{
if( base == 16 )
{
tmp[i++] = digits[16];
tmp[i++] = '0';
}
else if( base == 8 && tmp[i-1] != '0' )
tmp[i++] = '0';
}
/* Reverse for buf */
j = 0;
while( i-- > 0 )
buf[j++] = tmp[i];
buf[j] = '\0';
/* Adjust precision so pf_fill won't truncate the number later */
flags->Precision = strlen( buf );
if( tmp != number )
HeapFree( GetProcessHeap(), 0, tmp );
return;
}
/*********************************************************************
* pf_vsnprintf (INTERNAL)
*
* implements both A and W vsnprintf functions
*/
static int pf_vsnprintf( pf_output *out, const WCHAR *format, va_list valist )
{
int r;
LPCWSTR q, p = format;
pf_flags flags;
TRACE("format is %s\n",debugstr_w(format));
while (*p)
{
q = strchrW( p, '%' );
/* there's no % characters left, output the rest of the string */
if( !q )
{
r = pf_output_stringW(out, p, -1);
if( r<0 )
return r;
p += r;
continue;
}
/* there's characters before the %, output them */
if( q != p )
{
r = pf_output_stringW(out, p, q - p);
if( r<0 )
return r;
p = q;
}
/* we must be at a % now, skip over it */
assert( *p == '%' );
p++;
/* output a single % character */
if( *p == '%' )
{
r = pf_output_stringW(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 = *p;
else if( *p == '0' )
flags.PadZero = *p;
else if( *p == '#' )
flags.Alternate = *p;
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 = '-';
flags.FieldLength = -flags.FieldLength;
}
p++;
}
else while( isdigit(*p) )
{
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( isdigit(*p) )
{
flags.Precision *= 10;
flags.Precision += *p++ - '0';
}
}
/* deal with integer width modifier */
while( *p )
{
if( *p == 'h' || *p == 'l' || *p == 'L' )
{
flags.IntegerLength = *p;
p++;
}
else if( *p == 'I' )
{
if( *(p+1) == '6' && *(p+2) == '4' )
{
flags.IntegerDouble++;
p += 3;
}
else if( *(p+1) == '3' && *(p+2) == '2' )
p += 3;
else if( isdigit(*(p+1)) || *(p+1) == 0 )
break;
else
p++;
}
else if( *p == 'w' )
flags.WideString = *p++;
else if( *p == 'F' )
p++; /* ignore */
else
break;
}
flags.Format = *p;
r = 0;
/* output a string */
if( flags.Format == 's' || flags.Format == 'S' )
r = 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' )
{
INT ch = va_arg( valist, int );
r = pf_handle_string_format( out, &ch, 1, &flags, (flags.Format == 'C') );
}
/* output a pointer */
else if( flags.Format == 'p' )
{
char pointer[11];
flags.PadZero = 0;
if( flags.Alternate )
sprintf(pointer, "0X%08lX", va_arg(valist, long));
else
sprintf(pointer, "%08lX", va_arg(valist, long));
r = pf_output_format_A( out, pointer, -1, &flags );
}
/* deal with %n */
else if( flags.Format == 'n' )
{
int *x = va_arg(valist, int *);
*x = out->used;
}
/* deal with 64-bit integers */
else if( pf_is_integer_format( flags.Format ) && flags.IntegerDouble )
{
char number[40], *x = number;
/* Estimate largest possible required buffer size:
* Chooses the larger of the field or precision
* Includes extra bytes: 1 byte for null, 1 byte for sign,
4 bytes for exponent, 2 bytes for alternate formats, 1 byte
for a decimal, and 1 byte for an additional float digit. */
int x_len = ((flags.FieldLength > flags.Precision) ?
flags.FieldLength : flags.Precision) + 10;
if( x_len >= sizeof number)
x = HeapAlloc( GetProcessHeap(), 0, x_len );
pf_integer_conv( x, x_len, &flags, va_arg(valist, LONGLONG) );
r = pf_output_format_A( out, x, -1, &flags );
if( x != number )
HeapFree( GetProcessHeap(), 0, x );
}
/* deal with integers and floats using libc's printf */
else if( pf_is_valid_format( flags.Format ) )
{
char fmt[20], number[40], *x = number;
/* Estimate largest possible required buffer size:
* Chooses the larger of the field or precision
* Includes extra bytes: 1 byte for null, 1 byte for sign,
4 bytes for exponent, 2 bytes for alternate formats, 1 byte
for a decimal, and 1 byte for an additional float digit. */
int x_len = ((flags.FieldLength > flags.Precision) ?
flags.FieldLength : flags.Precision) + 10;
if( x_len >= sizeof number)
x = HeapAlloc( GetProcessHeap(), 0, x_len );
pf_rebuild_format_string( fmt, &flags );
if( pf_is_double_format( flags.Format ) )
sprintf( x, fmt, va_arg(valist, double) );
else
sprintf( x, fmt, va_arg(valist, int) );
r = pf_output_stringA( out, x, -1 );
if( x != number )
HeapFree( GetProcessHeap(), 0, x );
}
else
continue;
if( r<0 )
return r;
p++;
}
/* check we reached the end, and null terminate the string */
assert( *p == 0 );
pf_output_stringW( out, p, 1 );
return out->used - 1;
}
/*********************************************************************
* _vsnprintf (MSVCRT.@)
*/
int CDECL MSVCRT_vsnprintf( char *str, unsigned int len,
const char *format, va_list valist )
{
DWORD sz;
LPWSTR formatW = NULL;
pf_output out;
int r;
out.unicode = FALSE;
out.buf.A = str;
out.used = 0;
out.len = len;
if( format )
{
sz = MultiByteToWideChar( CP_ACP, 0, format, -1, NULL, 0 );
formatW = HeapAlloc( GetProcessHeap(), 0, sz*sizeof(WCHAR) );
MultiByteToWideChar( CP_ACP, 0, format, -1, formatW, sz );
}
r = pf_vsnprintf( &out, formatW, valist );
HeapFree( GetProcessHeap(), 0, formatW );
return r;
}
/*********************************************************************
* vsprintf (MSVCRT.@)
*/
int CDECL MSVCRT_vsprintf( char *str, const char *format, va_list valist)
{
return MSVCRT_vsnprintf(str, INT_MAX, format, valist);
}
/*********************************************************************
* _snprintf (MSVCRT.@)
*/
int CDECL MSVCRT__snprintf(char *str, unsigned int len, const char *format, ...)
{
int retval;
va_list valist;
va_start(valist, format);
retval = MSVCRT_vsnprintf(str, len, format, valist);
va_end(valist);
return retval;
}
/*********************************************************************
* _vsnwsprintf (MSVCRT.@)
*/
int CDECL MSVCRT_vsnwprintf( MSVCRT_wchar_t *str, unsigned int len,
const MSVCRT_wchar_t *format, va_list valist )
{
pf_output out;
out.unicode = TRUE;
out.buf.W = str;
out.used = 0;
out.len = len;
return pf_vsnprintf( &out, format, valist );
}
/*********************************************************************
* _snwprintf (MSVCRT.@)
*/
int CDECL MSVCRT__snwprintf( MSVCRT_wchar_t *str, unsigned int len, const MSVCRT_wchar_t *format, ...)
{
int retval;
va_list valist;
va_start(valist, format);
retval = MSVCRT_vsnwprintf(str, len, format, valist);
va_end(valist);
return retval;
}
/*********************************************************************
* sprintf (MSVCRT.@)
*/
int CDECL MSVCRT_sprintf( char *str, const char *format, ... )
{
va_list ap;
int r;
va_start( ap, format );
r = MSVCRT_vsnprintf( str, INT_MAX, format, ap );
va_end( ap );
return r;
}
/*********************************************************************
* swprintf (MSVCRT.@)
*/
int CDECL MSVCRT_swprintf( MSVCRT_wchar_t *str, const MSVCRT_wchar_t *format, ... )
{
va_list ap;
int r;
va_start( ap, format );
r = MSVCRT_vsnwprintf( str, INT_MAX, format, ap );
va_end( ap );
return r;
}
/*********************************************************************
* vswprintf (MSVCRT.@)
*/
int CDECL MSVCRT_vswprintf( MSVCRT_wchar_t* str, const MSVCRT_wchar_t* format, va_list args )
{
return MSVCRT_vsnwprintf( str, INT_MAX, format, args );
}
/*********************************************************************
* wcscoll (MSVCRT.@)
*/
int CDECL MSVCRT_wcscoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* str2 )
{
/* FIXME: handle collates */
return strcmpW( str1, str2 );
}
/*********************************************************************
* wcspbrk (MSVCRT.@)
*/
MSVCRT_wchar_t* CDECL MSVCRT_wcspbrk( const MSVCRT_wchar_t* str, const MSVCRT_wchar_t* accept )
{
const MSVCRT_wchar_t* p;
while (*str)
{
for (p = accept; *p; p++) if (*p == *str) return (MSVCRT_wchar_t*)str;
str++;
}
return NULL;
}
/*********************************************************************
* wcstok (MSVCRT.@)
*/
MSVCRT_wchar_t * CDECL MSVCRT_wcstok( MSVCRT_wchar_t *str, const MSVCRT_wchar_t *delim )
{
thread_data_t *data = msvcrt_get_thread_data();
MSVCRT_wchar_t *ret;
if (!str)
if (!(str = data->wcstok_next)) return NULL;
while (*str && strchrW( delim, *str )) str++;
if (!*str) return NULL;
ret = str++;
while (*str && !strchrW( delim, *str )) str++;
if (*str) *str++ = 0;
data->wcstok_next = str;
return ret;
}
/*********************************************************************
* wctomb (MSVCRT.@)
*/
INT CDECL MSVCRT_wctomb( char *dst, MSVCRT_wchar_t ch )
{
return WideCharToMultiByte( CP_ACP, 0, &ch, 1, dst, 6, NULL, NULL );
}
/*********************************************************************
* iswalnum (MSVCRT.@)
*/
INT CDECL MSVCRT_iswalnum( MSVCRT_wchar_t wc )
{
return isalnumW( wc );
}
/*********************************************************************
* iswalpha (MSVCRT.@)
*/
INT CDECL MSVCRT_iswalpha( MSVCRT_wchar_t wc )
{
return isalphaW( wc );
}
/*********************************************************************
* iswcntrl (MSVCRT.@)
*/
INT CDECL MSVCRT_iswcntrl( MSVCRT_wchar_t wc )
{
return iscntrlW( wc );
}
/*********************************************************************
* iswdigit (MSVCRT.@)
*/
INT CDECL MSVCRT_iswdigit( MSVCRT_wchar_t wc )
{
return isdigitW( wc );
}
/*********************************************************************
* iswgraph (MSVCRT.@)
*/
INT CDECL MSVCRT_iswgraph( MSVCRT_wchar_t wc )
{
return isgraphW( wc );
}
/*********************************************************************
* iswlower (MSVCRT.@)
*/
INT CDECL MSVCRT_iswlower( MSVCRT_wchar_t wc )
{
return islowerW( wc );
}
/*********************************************************************
* iswprint (MSVCRT.@)
*/
INT CDECL MSVCRT_iswprint( MSVCRT_wchar_t wc )
{
return isprintW( wc );
}
/*********************************************************************
* iswpunct (MSVCRT.@)
*/
INT CDECL MSVCRT_iswpunct( MSVCRT_wchar_t wc )
{
return ispunctW( wc );
}
/*********************************************************************
* iswspace (MSVCRT.@)
*/
INT CDECL MSVCRT_iswspace( MSVCRT_wchar_t wc )
{
return isspaceW( wc );
}
/*********************************************************************
* iswupper (MSVCRT.@)
*/
INT CDECL MSVCRT_iswupper( MSVCRT_wchar_t wc )
{
return isupperW( wc );
}
/*********************************************************************
* iswxdigit (MSVCRT.@)
*/
INT CDECL MSVCRT_iswxdigit( MSVCRT_wchar_t wc )
{
return isxdigitW( wc );
}
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