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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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);
/* INTERNAL: MSVCRT_malloc() based wstrndup */
MSVCRT_wchar_t* msvcrt_wstrndup(const MSVCRT_wchar_t *buf, unsigned int size)
{
MSVCRT_wchar_t* ret;
unsigned int len = strlenW(buf), max_len;
max_len = size <= len? size : len + 1;
ret = MSVCRT_malloc(max_len * sizeof (MSVCRT_wchar_t));
if (ret)
{
memcpy(ret,buf,max_len * sizeof (MSVCRT_wchar_t));
ret[max_len] = 0;
}
return ret;
}
/*********************************************************************
* _wcsdup (MSVCRT.@)
*/
MSVCRT_wchar_t* _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 _wcsicoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* str2 )
{
/* FIXME: handle collates */
return strcmpiW( str1, str2 );
}
/*********************************************************************
* _wcsnset (MSVCRT.@)
*/
MSVCRT_wchar_t* _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* _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* _wcsset( MSVCRT_wchar_t* str, MSVCRT_wchar_t c )
{
MSVCRT_wchar_t* ret = str;
while (*str) *str++ = c;
return ret;
}
/*********************************************************************
* wcstod (MSVCRT.@)
*/
double 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;
char 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;
}
static inline int pf_fill( pf_output *out, int len, pf_flags *flags, char left )
{
int i, r = 0;
if( ( !left && flags->LeftAlign ) ||
( left && !flags->LeftAlign ) ||
( left && flags->PadZero ) )
{
for( i=0; (i<(flags->FieldLength-len)) && (r>=0); i++ )
{
if( flags->PadZero )
r = pf_output_stringA( out, "0", 1 );
else
r = pf_output_stringA( out, " ", 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 && 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 && 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 inline BOOL pf_is_double_format( char fmt )
{
char float_fmts[] = "aefg";
if (!fmt)
return FALSE;
fmt = tolower( fmt );
return strchr( float_fmts, fmt ) ? TRUE : FALSE;
}
static inline BOOL pf_is_valid_format( char fmt )
{
char float_fmts[] = "acdefginoux";
if (!fmt)
return FALSE;
fmt = tolower( fmt );
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 )
{
sprintf(p, ".%d", flags->Precision);
p += strlen(p);
}
*p++ = flags->Format;
*p++ = 0;
}
/*********************************************************************
* 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 == ' ' )
flags.Sign = '+';
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 );
p++;
}
else while( isdigit(*p) )
{
flags.FieldLength *= 10;
flags.FieldLength += *p++ - '0';
}
/* deal with precision */
if( *p == '.' )
{
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' )
{
if( flags.IntegerLength == *p ) /* FIXME: this is wrong */
flags.IntegerDouble++;
else
flags.IntegerLength = *p;
p++;
}
else if( *p == 'w' )
flags.WideString = *p++;
else if( *p == 'F' )
p++; /* ignore */
else
break;
}
flags.Format = *p;
r = 0;
/* output a unicode string */
if( ( flags.Format == 's' && (flags.WideString || flags.IntegerLength == 'l' )) ||
( !out->unicode && flags.Format == 'S' ) ||
( out->unicode && flags.Format == 's' ) )
{
LPCWSTR str = va_arg( valist, const WCHAR * );
if( str )
r = pf_output_format_W( out, str, -1, &flags );
else
r = pf_output_format_A( out, "(null)", -1, &flags );
}
/* output a ASCII string */
else if( ( flags.Format == 's' && flags.IntegerLength == 'h' ) ||
( out->unicode && flags.Format == 'S' ) ||
( !out->unicode && flags.Format == 's' ) )
{
LPCSTR str = va_arg( valist, const CHAR * );
if( str )
r = pf_output_format_A( out, str, -1, &flags );
else
r = pf_output_format_A( out, "(null)", -1, &flags );
}
/* output a single wide character */
else if( ( flags.Format == 'c' && flags.IntegerLength == 'w' ) ||
( out->unicode && flags.Format == 'c' ) ||
( !out->unicode && flags.Format == 'C' ) )
{
WCHAR ch = va_arg( valist, int );
r = pf_output_format_W( out, &ch, 1, &flags );
}
/* output a single ascii character */
else if( ( flags.Format == 'c' && flags.IntegerLength == 'h' ) ||
( out->unicode && flags.Format == 'C' ) ||
( !out->unicode && flags.Format == 'c' ) )
{
CHAR ch = va_arg( valist, int );
r = pf_output_format_A( out, &ch, 1, &flags );
}
/* output a pointer */
else if( flags.Format == 'p' )
{
char pointer[10];
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 integers and floats using libc's printf */
else if( pf_is_valid_format( flags.Format ) )
{
char fmt[20], number[40], *x = number;
if( flags.FieldLength >= sizeof number )
x = HeapAlloc( GetProcessHeap(), 0, flags.FieldLength+1 );
pf_rebuild_format_string( fmt, &flags );
if( pf_is_double_format( flags.Format ) )
sprintf( number, fmt, va_arg(valist, double) );
else
sprintf( number, fmt, va_arg(valist, int) );
r = pf_output_stringA( out, number, -1 );
if( x != number )
HeapFree( GetProcessHeap(), 0, number );
}
else
continue;
if( r<0 )
return r;
p++;
}
/* check we reached the end, and null terminate the string */
assert( *p == 0 );
r = pf_output_stringW( out, p, 1 );
if( r<0 )
return r;
return out->used - 1;
}
/*********************************************************************
* _vsnprintf (MSVCRT.@)
*/
int 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;
}
/*********************************************************************
* _vsnwsprintf (MSVCRT.@)
*/
int MSVCRT_vsnwprintf( MSVCRT_wchar_t *str, unsigned int len,
const WCHAR *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 );
}
/*********************************************************************
* sprintf (MSVCRT.@)
*/
int 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 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 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 MSVCRT_wcscoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* str2 )
{
/* FIXME: handle collates */
return strcmpW( str1, str2 );
}
/*********************************************************************
* wcspbrk (MSVCRT.@)
*/
MSVCRT_wchar_t* 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;
}
/*********************************************************************
* wctomb (MSVCRT.@)
*/
INT MSVCRT_wctomb( char *dst, MSVCRT_wchar_t ch )
{
return WideCharToMultiByte( CP_ACP, 0, &ch, 1, dst, 6, NULL, NULL );
}
/*********************************************************************
* iswalnum (MSVCRT.@)
*/
INT MSVCRT_iswalnum( MSVCRT_wchar_t wc )
{
return isalnumW( wc );
}
/*********************************************************************
* iswalpha (MSVCRT.@)
*/
INT MSVCRT_iswalpha( MSVCRT_wchar_t wc )
{
return isalphaW( wc );
}
/*********************************************************************
* iswcntrl (MSVCRT.@)
*/
INT MSVCRT_iswcntrl( MSVCRT_wchar_t wc )
{
return iscntrlW( wc );
}
/*********************************************************************
* iswdigit (MSVCRT.@)
*/
INT MSVCRT_iswdigit( MSVCRT_wchar_t wc )
{
return isdigitW( wc );
}
/*********************************************************************
* iswgraph (MSVCRT.@)
*/
INT MSVCRT_iswgraph( MSVCRT_wchar_t wc )
{
return isgraphW( wc );
}
/*********************************************************************
* iswlower (MSVCRT.@)
*/
INT MSVCRT_iswlower( MSVCRT_wchar_t wc )
{
return islowerW( wc );
}
/*********************************************************************
* iswprint (MSVCRT.@)
*/
INT MSVCRT_iswprint( MSVCRT_wchar_t wc )
{
return isprintW( wc );
}
/*********************************************************************
* iswpunct (MSVCRT.@)
*/
INT MSVCRT_iswpunct( MSVCRT_wchar_t wc )
{
return ispunctW( wc );
}
/*********************************************************************
* iswspace (MSVCRT.@)
*/
INT MSVCRT_iswspace( MSVCRT_wchar_t wc )
{
return isspaceW( wc );
}
/*********************************************************************
* iswupper (MSVCRT.@)
*/
INT MSVCRT_iswupper( MSVCRT_wchar_t wc )
{
return isupperW( wc );
}
/*********************************************************************
* iswxdigit (MSVCRT.@)
*/
INT MSVCRT_iswxdigit( MSVCRT_wchar_t wc )
{
return isxdigitW( wc );
}
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