776 lines
20 KiB
C
776 lines
20 KiB
C
/*
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* ntdll printf functions
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*
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* Copyright 1999, 2009 Alexandre Julliard
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* Copyright 2000 Jon Griffiths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <ctype.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "windef.h"
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#include "winternl.h"
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#include "ntdll_misc.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
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static const SIZE_T size_max = ~(SIZE_T)0 >> 1;
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/* FIXME: convert sizes to SIZE_T etc. */
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typedef struct pf_output_t
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{
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int used;
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int len;
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BOOL unicode;
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union {
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LPWSTR W;
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LPSTR A;
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} buf;
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} pf_output;
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typedef struct pf_flags_t
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{
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char Sign, LeftAlign, Alternate, PadZero;
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int FieldLength, Precision;
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char IntegerLength, IntegerDouble;
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char WideString;
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char Format;
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} pf_flags;
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/*
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* writes a string of characters to the output
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* returns -1 if the string doesn't fit in the output buffer
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* return the length of the string if all characters were written
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*/
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static inline int pf_output_stringW( pf_output *out, LPCWSTR str, int len )
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{
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int space = out->len - out->used;
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if( len < 0 )
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len = strlenW( str );
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if( out->unicode )
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{
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LPWSTR p = out->buf.W + out->used;
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out->used += len;
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if (!out->buf.W)
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return len;
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if( space >= len )
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{
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memcpy( p, str, len*sizeof(WCHAR) );
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return len;
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}
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if( space > 0 )
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memcpy( p, str, space*sizeof(WCHAR) );
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}
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else
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{
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LPSTR p = out->buf.A + out->used;
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ULONG n;
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RtlUnicodeToMultiByteSize( &n, str, len * sizeof(WCHAR) );
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out->used += n;
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if (!out->buf.A)
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return len;
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if( space >= n )
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{
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RtlUnicodeToMultiByteN( p, n, NULL, str, len * sizeof(WCHAR) );
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return len;
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}
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if (space > 0) RtlUnicodeToMultiByteN( p, space, NULL, str, len * sizeof(WCHAR) );
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}
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return -1;
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}
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static inline int pf_output_stringA( pf_output *out, LPCSTR str, int len )
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{
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int space = out->len - out->used;
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if( len < 0 )
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len = strlen( str );
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if( !out->unicode )
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{
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LPSTR p = out->buf.A + out->used;
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out->used += len;
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if (!out->buf.A)
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return len;
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if( space >= len )
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{
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memcpy( p, str, len );
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return len;
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}
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if( space > 0 )
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memcpy( p, str, space );
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}
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else
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{
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LPWSTR p = out->buf.W + out->used;
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ULONG n;
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RtlMultiByteToUnicodeSize( &n, str, len );
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out->used += n / sizeof(WCHAR);
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if (!out->buf.W)
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return len;
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if (space >= n / sizeof(WCHAR))
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{
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RtlMultiByteToUnicodeN( p, n, NULL, str, len );
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return len;
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}
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if (space > 0) RtlMultiByteToUnicodeN( p, space * sizeof(WCHAR), NULL, str, len );
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}
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return -1;
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}
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/* pf_fill: takes care of signs, alignment, zero and field padding */
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static inline int pf_fill( pf_output *out, int len, pf_flags *flags, char left )
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{
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int i, r = 0;
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if( flags->Sign && !( flags->Format == 'd' || flags->Format == 'i' ) )
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flags->Sign = 0;
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if( left && flags->Sign )
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{
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flags->FieldLength--;
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if( flags->PadZero )
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r = pf_output_stringA( out, &flags->Sign, 1 );
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}
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if( ( !left && flags->LeftAlign ) ||
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( left && !flags->LeftAlign ))
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{
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for( i=0; (i<(flags->FieldLength-len)) && (r>=0); i++ )
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{
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if( left && flags->PadZero )
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r = pf_output_stringA( out, "0", 1 );
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else
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r = pf_output_stringA( out, " ", 1 );
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}
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}
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if (left && flags->Sign && !flags->PadZero && r >= 0)
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r = pf_output_stringA( out, &flags->Sign, 1 );
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return r;
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}
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static inline int pf_output_format_W( pf_output *out, LPCWSTR str,
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int len, pf_flags *flags )
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{
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int r = 0;
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if( len < 0 )
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len = strlenW( str );
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if (flags->Precision >= 0 && flags->Precision < len)
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len = flags->Precision;
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r = pf_fill( out, len, flags, 1 );
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if( r>=0 )
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r = pf_output_stringW( out, str, len );
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if( r>=0 )
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r = pf_fill( out, len, flags, 0 );
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return r;
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}
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static inline int pf_output_format_A( pf_output *out, LPCSTR str,
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int len, pf_flags *flags )
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{
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int r = 0;
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if( len < 0 )
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len = strlen( str );
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if (flags->Precision >= 0 && flags->Precision < len)
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len = flags->Precision;
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r = pf_fill( out, len, flags, 1 );
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if( r>=0 )
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r = pf_output_stringA( out, str, len );
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if( r>=0 )
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r = pf_fill( out, len, flags, 0 );
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return r;
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}
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static int pf_handle_string_format( pf_output *out, const void* str, int len,
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pf_flags *flags, BOOL capital_letter)
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{
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if(str == NULL) /* catch NULL pointer */
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return pf_output_format_A( out, "(null)", -1, flags);
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/* prefixes take priority over %c,%s vs. %C,%S, so we handle them first */
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if(flags->WideString || flags->IntegerLength == 'l')
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return pf_output_format_W( out, str, len, flags);
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if(flags->IntegerLength == 'h')
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return pf_output_format_A( out, str, len, flags);
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/* %s,%c -> chars in ansi functions & wchars in unicode
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* %S,%C -> wchars in ansi functions & chars in unicode */
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if( capital_letter == out->unicode) /* either both TRUE or both FALSE */
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return pf_output_format_A( out, str, len, flags);
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else
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return pf_output_format_W( out, str, len, flags);
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}
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static inline BOOL pf_is_integer_format( char fmt )
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{
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static const char float_fmts[] = "diouxX";
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if (!fmt)
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return FALSE;
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return strchr( float_fmts, fmt ) != 0;
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}
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static inline BOOL pf_is_double_format( char fmt )
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{
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static const char float_fmts[] = "aeEfgG";
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if (!fmt)
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return FALSE;
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return strchr( float_fmts, fmt ) != 0;
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}
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static inline BOOL pf_is_valid_format( char fmt )
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{
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static const char float_fmts[] = "acCdeEfgGinouxX";
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if (!fmt)
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return FALSE;
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return strchr( float_fmts, fmt ) != 0;
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}
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static void pf_rebuild_format_string( char *p, pf_flags *flags )
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{
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*p++ = '%';
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if( flags->Sign )
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*p++ = flags->Sign;
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if( flags->LeftAlign )
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*p++ = flags->LeftAlign;
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if( flags->Alternate )
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*p++ = flags->Alternate;
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if( flags->PadZero )
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*p++ = flags->PadZero;
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if( flags->FieldLength )
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{
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sprintf(p, "%d", flags->FieldLength);
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p += strlen(p);
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}
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if( flags->Precision >= 0 )
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{
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sprintf(p, ".%d", flags->Precision);
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p += strlen(p);
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}
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*p++ = flags->Format;
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*p++ = 0;
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}
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/* pf_integer_conv: prints x to buf, including alternate formats and
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additional precision digits, but not field characters or the sign */
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static void pf_integer_conv( char *buf, int buf_len, pf_flags *flags,
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LONGLONG x )
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{
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unsigned int base;
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const char *digits;
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int i, j, k;
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char number[40], *tmp = number;
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if( buf_len > sizeof number )
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{
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if (!(tmp = RtlAllocateHeap( GetProcessHeap(), 0, buf_len )))
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{
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buf[0] = '\0';
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return;
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}
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}
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base = 10;
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if( flags->Format == 'o' )
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base = 8;
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else if( flags->Format == 'x' || flags->Format == 'X' )
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base = 16;
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if( flags->Format == 'X' )
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digits = "0123456789ABCDEFX";
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else
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digits = "0123456789abcdefx";
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if( x < 0 && ( flags->Format == 'd' || flags->Format == 'i' ) )
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{
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x = -x;
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flags->Sign = '-';
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}
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/* Do conversion (backwards) */
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i = 0;
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if( x == 0 && flags->Precision )
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tmp[i++] = '0';
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else
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while( x != 0 )
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{
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j = (ULONGLONG) x % base;
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x = (ULONGLONG) x / base;
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tmp[i++] = digits[j];
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}
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k = flags->Precision - i;
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while( k-- > 0 )
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tmp[i++] = '0';
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if( flags->Alternate )
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{
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if( base == 16 )
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{
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tmp[i++] = digits[16];
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tmp[i++] = '0';
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}
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else if( base == 8 && tmp[i-1] != '0' )
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tmp[i++] = '0';
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}
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/* Reverse for buf */
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j = 0;
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while( i-- > 0 )
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buf[j++] = tmp[i];
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buf[j] = '\0';
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/* Adjust precision so pf_fill won't truncate the number later */
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flags->Precision = strlen( buf );
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if( tmp != number )
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RtlFreeHeap( GetProcessHeap(), 0, tmp );
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return;
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}
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/* pf_fixup_exponent: convert a string containing a 2 digit exponent
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to 3 digits, accounting for padding, in place. Needed to match
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the native printf's which always use 3 digits. */
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static void pf_fixup_exponent( char *buf )
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{
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char* tmp = buf;
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while (tmp[0] && toupper(tmp[0]) != 'E')
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tmp++;
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if (tmp[0] && (tmp[1] == '+' || tmp[1] == '-') &&
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isdigit(tmp[2]) && isdigit(tmp[3]))
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{
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char final;
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if (isdigit(tmp[4]))
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return; /* Exponent already 3 digits */
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/* We have a 2 digit exponent. Prepend '0' to make it 3 */
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tmp += 2;
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final = tmp[2];
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tmp[2] = tmp[1];
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tmp[1] = tmp[0];
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tmp[0] = '0';
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if (final == '\0')
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{
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/* We didn't expand into trailing space, so this string isn't left
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* justified. Terminate the string and strip a ' ' at the start of
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* the string if there is one (as there may be if the string is
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* right justified).
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*/
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tmp[3] = '\0';
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if (buf[0] == ' ')
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memmove(buf, buf + 1, (tmp - buf) + 3);
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}
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/* Otherwise, we expanded into trailing space -> nothing to do */
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}
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}
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static inline BOOL isDigit(WCHAR c)
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{
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return c >= '0' && c <= '9';
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}
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/*********************************************************************
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* pf_vsnprintf (INTERNAL)
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*
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* implements both A and W vsnprintf functions
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*/
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static int pf_vsnprintf( pf_output *out, const WCHAR *format, __ms_va_list valist )
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{
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int r;
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LPCWSTR q, p = format;
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pf_flags flags;
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TRACE("format is %s\n",debugstr_w(format));
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while (*p)
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{
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q = strchrW( p, '%' );
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/* there are no % characters left: output the rest of the string */
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if( !q )
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{
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r = pf_output_stringW(out, p, -1);
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if( r<0 )
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return r;
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p += r;
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continue;
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}
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/* there are characters before the %: output them */
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if( q != p )
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{
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r = pf_output_stringW(out, p, q - p);
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if( r<0 )
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return r;
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p = q;
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}
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/* we must be at a % now, skip over it */
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assert( *p == '%' );
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p++;
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/* output a single % character */
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if( *p == '%' )
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{
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r = pf_output_stringW(out, p++, 1);
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if( r<0 )
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return r;
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continue;
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}
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/* parse the flags */
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memset( &flags, 0, sizeof flags );
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while (*p)
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{
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if( *p == '+' || *p == ' ' )
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{
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if ( flags.Sign != '+' )
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flags.Sign = *p;
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}
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else if( *p == '-' )
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flags.LeftAlign = *p;
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else if( *p == '0' )
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flags.PadZero = *p;
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else if( *p == '#' )
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flags.Alternate = *p;
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else
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break;
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p++;
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}
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/* deal with the field width specifier */
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flags.FieldLength = 0;
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if( *p == '*' )
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{
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flags.FieldLength = va_arg( valist, int );
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if (flags.FieldLength < 0)
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{
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flags.LeftAlign = '-';
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flags.FieldLength = -flags.FieldLength;
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}
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p++;
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}
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else while( isDigit(*p) )
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{
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flags.FieldLength *= 10;
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flags.FieldLength += *p++ - '0';
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}
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/* deal with precision */
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flags.Precision = -1;
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if( *p == '.' )
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{
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flags.Precision = 0;
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p++;
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if( *p == '*' )
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{
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flags.Precision = va_arg( valist, int );
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p++;
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}
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else while( isDigit(*p) )
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{
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flags.Precision *= 10;
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flags.Precision += *p++ - '0';
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}
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}
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/* deal with integer width modifier */
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while( *p )
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{
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if( *p == 'h' || *p == 'l' || *p == 'L' )
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{
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flags.IntegerLength = *p;
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p++;
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}
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else if( *p == 'I' )
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{
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if( *(p+1) == '6' && *(p+2) == '4' )
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{
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flags.IntegerDouble++;
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p += 3;
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}
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else if( *(p+1) == '3' && *(p+2) == '2' )
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p += 3;
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else if( isDigit(*(p+1)) || *(p+1) == 0 )
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break;
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else
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p++;
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}
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else if( *p == 'w' )
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flags.WideString = *p++;
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else if( *p == 'F' )
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p++; /* ignore */
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else
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break;
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}
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flags.Format = *p;
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r = 0;
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if (flags.Format == '$')
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{
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FIXME("Positional parameters are not supported (%s)\n", wine_dbgstr_w(format));
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return -1;
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}
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/* output a string */
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if( flags.Format == 's' || flags.Format == 'S' )
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r = pf_handle_string_format( out, va_arg(valist, const void*), -1,
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&flags, (flags.Format == 'S') );
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/* 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[32];
|
|
void *ptr = va_arg( valist, void * );
|
|
|
|
flags.PadZero = 0;
|
|
if( flags.Alternate )
|
|
sprintf(pointer, "0X%0*lX", 2 * (int)sizeof(ptr), (ULONG_PTR)ptr);
|
|
else
|
|
sprintf(pointer, "%0*lX", 2 * (int)sizeof(ptr), (ULONG_PTR)ptr);
|
|
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)
|
|
if (!(x = RtlAllocateHeap( GetProcessHeap(), 0, x_len )))
|
|
return -1;
|
|
|
|
pf_integer_conv( x, x_len, &flags, va_arg(valist, LONGLONG) );
|
|
|
|
r = pf_output_format_A( out, x, -1, &flags );
|
|
if( x != number )
|
|
RtlFreeHeap( 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)
|
|
if (!(x = RtlAllocateHeap( GetProcessHeap(), 0, x_len )))
|
|
return -1;
|
|
|
|
pf_rebuild_format_string( fmt, &flags );
|
|
|
|
if( pf_is_double_format( flags.Format ) )
|
|
{
|
|
sprintf( x, fmt, va_arg(valist, double) );
|
|
if (toupper(flags.Format) == 'E' || toupper(flags.Format) == 'G')
|
|
pf_fixup_exponent( x );
|
|
}
|
|
else
|
|
sprintf( x, fmt, va_arg(valist, int) );
|
|
|
|
r = pf_output_stringA( out, x, -1 );
|
|
if( x != number )
|
|
RtlFreeHeap( 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 (NTDLL.@)
|
|
*/
|
|
int CDECL NTDLL__vsnprintf( char *str, SIZE_T len, const char *format, __ms_va_list args )
|
|
{
|
|
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)
|
|
{
|
|
RtlMultiByteToUnicodeSize( &sz, format, strlen(format) + 1 );
|
|
if (!(formatW = RtlAllocateHeap( GetProcessHeap(), 0, sz ))) return -1;
|
|
RtlMultiByteToUnicodeN( formatW, sz, NULL, format, strlen(format) + 1 );
|
|
}
|
|
r = pf_vsnprintf( &out, formatW, args );
|
|
RtlFreeHeap( GetProcessHeap(), 0, formatW );
|
|
return r;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* _vsnwprintf (NTDLL.@)
|
|
*/
|
|
int CDECL NTDLL__vsnwprintf( WCHAR *str, SIZE_T len, const WCHAR *format, __ms_va_list args )
|
|
{
|
|
pf_output out;
|
|
|
|
out.unicode = TRUE;
|
|
out.buf.W = str;
|
|
out.used = 0;
|
|
out.len = len;
|
|
|
|
return pf_vsnprintf( &out, format, args );
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
* _snprintf (NTDLL.@)
|
|
*/
|
|
int CDECL NTDLL__snprintf( char *str, SIZE_T len, const char *format, ... )
|
|
{
|
|
int ret;
|
|
__ms_va_list valist;
|
|
|
|
__ms_va_start( valist, format );
|
|
ret = NTDLL__vsnprintf( str, len, format, valist );
|
|
__ms_va_end( valist );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* _snwprintf (NTDLL.@)
|
|
*/
|
|
int CDECL NTDLL__snwprintf( WCHAR *str, SIZE_T len, const WCHAR *format, ... )
|
|
{
|
|
int ret;
|
|
__ms_va_list valist;
|
|
|
|
__ms_va_start(valist, format);
|
|
ret = NTDLL__vsnwprintf( str, len, format, valist );
|
|
__ms_va_end(valist);
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
* vsprintf (NTDLL.@)
|
|
*/
|
|
int CDECL NTDLL_vsprintf( char *str, const char *format, __ms_va_list args )
|
|
{
|
|
return NTDLL__vsnprintf( str, size_max, format, args );
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
* sprintf (NTDLL.@)
|
|
*/
|
|
int CDECL NTDLL_sprintf( char *str, const char *format, ... )
|
|
{
|
|
int ret;
|
|
__ms_va_list valist;
|
|
|
|
__ms_va_start( valist, format );
|
|
ret = NTDLL__vsnprintf( str, size_max, format, valist );
|
|
__ms_va_end( valist );
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* swprintf (NTDLL.@)
|
|
*/
|
|
int CDECL NTDLL_swprintf( WCHAR *str, const WCHAR *format, ... )
|
|
{
|
|
int ret;
|
|
__ms_va_list valist;
|
|
|
|
__ms_va_start(valist, format);
|
|
ret = NTDLL__vsnwprintf( str, size_max, format, valist );
|
|
__ms_va_end(valist);
|
|
return ret;
|
|
}
|