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310 lines
7.2 KiB
C
310 lines
7.2 KiB
C
/*
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* String functions
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*
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* Copyright 1993 Yngvi Sigurjonsson
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* Copyright 1996 Alexandre Julliard
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <ctype.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wine/winbase16.h"
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#include "wine/exception.h"
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#include "wine/unicode.h"
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#include "winerror.h"
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#include "winnls.h"
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#include "msvcrt/excpt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(string);
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/* filter for page-fault exceptions */
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static WINE_EXCEPTION_FILTER(page_fault)
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{
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if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
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return EXCEPTION_EXECUTE_HANDLER;
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return EXCEPTION_CONTINUE_SEARCH;
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}
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/***********************************************************************
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* hmemcpy (KERNEL.348)
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*/
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void WINAPI hmemcpy16( LPVOID dst, LPCVOID src, LONG count )
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{
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memcpy( dst, src, count );
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}
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/***********************************************************************
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* lstrcat (KERNEL.89)
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*/
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SEGPTR WINAPI lstrcat16( SEGPTR dst, LPCSTR src )
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{
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/* Windows does not check for NULL pointers here, so we don't either */
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strcat( MapSL(dst), src );
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return dst;
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}
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/***********************************************************************
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* lstrcat (KERNEL32.@)
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* lstrcatA (KERNEL32.@)
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*/
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LPSTR WINAPI lstrcatA( LPSTR dst, LPCSTR src )
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{
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__TRY
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{
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strcat( dst, src );
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}
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__EXCEPT(page_fault)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return NULL;
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}
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__ENDTRY
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return dst;
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}
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/***********************************************************************
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* lstrcatW (KERNEL32.@)
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*/
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LPWSTR WINAPI lstrcatW( LPWSTR dst, LPCWSTR src )
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{
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__TRY
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{
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strcatW( dst, src );
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}
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__EXCEPT(page_fault)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return NULL;
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}
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__ENDTRY
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return dst;
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}
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/***********************************************************************
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* lstrcatn (KERNEL.352)
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*/
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SEGPTR WINAPI lstrcatn16( SEGPTR dst, LPCSTR src, INT16 n )
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{
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LPSTR p = MapSL(dst);
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LPSTR start = p;
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while (*p) p++;
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if ((n -= (p - start)) <= 0) return dst;
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lstrcpynA( p, src, n );
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return dst;
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}
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/***********************************************************************
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* lstrcpy (KERNEL.88)
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*/
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SEGPTR WINAPI lstrcpy16( SEGPTR dst, LPCSTR src )
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{
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if (!lstrcpyA( MapSL(dst), src )) dst = 0;
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return dst;
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}
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/***********************************************************************
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* lstrcpy (KERNEL32.@)
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* lstrcpyA (KERNEL32.@)
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*/
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LPSTR WINAPI lstrcpyA( LPSTR dst, LPCSTR src )
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{
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__TRY
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{
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/* this is how Windows does it */
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memmove( dst, src, strlen(src)+1 );
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}
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__EXCEPT(page_fault)
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{
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ERR("(%p, %p): page fault occurred ! Caused by bug ?\n", dst, src);
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SetLastError( ERROR_INVALID_PARAMETER );
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return NULL;
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}
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__ENDTRY
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return dst;
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}
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/***********************************************************************
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* lstrcpyW (KERNEL32.@)
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*/
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LPWSTR WINAPI lstrcpyW( LPWSTR dst, LPCWSTR src )
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{
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__TRY
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{
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strcpyW( dst, src );
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}
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__EXCEPT(page_fault)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return NULL;
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}
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__ENDTRY
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return dst;
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}
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/***********************************************************************
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* lstrcpyn (KERNEL.353)
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*/
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SEGPTR WINAPI lstrcpyn16( SEGPTR dst, LPCSTR src, INT16 n )
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{
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lstrcpynA( MapSL(dst), src, n );
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return dst;
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}
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/***********************************************************************
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* lstrcpyn (KERNEL32.@)
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* lstrcpynA (KERNEL32.@)
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*
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* Note: this function differs from the UNIX strncpy, it _always_ writes
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* a terminating \0.
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*
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* Note: n is an INT but Windows treats it as unsigned, and will happily
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* copy a gazillion chars if n is negative.
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*/
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LPSTR WINAPI lstrcpynA( LPSTR dst, LPCSTR src, INT n )
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{
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LPSTR p = dst;
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UINT count = n;
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TRACE("(%p, %s, %i)\n", dst, debugstr_a(src), n);
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/* In real windows the whole function is protected by an exception handler
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* that returns ERROR_INVALID_PARAMETER on faulty parameters
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* We currently just check for NULL.
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*/
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if (!dst || !src) {
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SetLastError(ERROR_INVALID_PARAMETER);
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return 0;
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}
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while ((count > 1) && *src)
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{
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count--;
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*p++ = *src++;
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}
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if (count) *p = 0;
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return dst;
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}
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/***********************************************************************
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* lstrcpynW (KERNEL32.@)
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*
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* Note: this function differs from the UNIX strncpy, it _always_ writes
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* a terminating \0
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*
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* Note: n is an INT but Windows treats it as unsigned, and will happily
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* copy a gazillion chars if n is negative.
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*/
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LPWSTR WINAPI lstrcpynW( LPWSTR dst, LPCWSTR src, INT n )
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{
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LPWSTR p = dst;
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UINT count = n;
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TRACE("(%p, %s, %i)\n", dst, debugstr_w(src), n);
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/* In real windows the whole function is protected by an exception handler
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* that returns ERROR_INVALID_PARAMETER on faulty parameters
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* We currently just check for NULL.
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*/
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if (!dst || !src) {
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SetLastError(ERROR_INVALID_PARAMETER);
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return 0;
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}
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while ((count > 1) && *src)
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{
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count--;
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*p++ = *src++;
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}
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if (count) *p = 0;
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return dst;
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}
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/***********************************************************************
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* lstrlen (KERNEL.90)
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*/
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INT16 WINAPI lstrlen16( LPCSTR str )
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{
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return (INT16)lstrlenA( str );
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}
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/***********************************************************************
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* lstrlen (KERNEL32.@)
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* lstrlenA (KERNEL32.@)
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*/
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INT WINAPI lstrlenA( LPCSTR str )
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{
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INT ret;
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__TRY
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{
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ret = strlen(str);
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}
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__EXCEPT(page_fault)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return 0;
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}
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__ENDTRY
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return ret;
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}
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/***********************************************************************
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* lstrlenW (KERNEL32.@)
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*/
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INT WINAPI lstrlenW( LPCWSTR str )
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{
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INT ret;
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__TRY
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{
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ret = strlenW(str);
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}
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__EXCEPT(page_fault)
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{
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SetLastError( ERROR_INVALID_PARAMETER );
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return 0;
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}
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__ENDTRY
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return ret;
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}
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/***********************************************************************
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* UnicodeToAnsi (KERNEL.434)
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*/
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INT16 WINAPI UnicodeToAnsi16( LPCWSTR src, LPSTR dst, INT16 codepage )
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{
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if ( codepage == -1 )
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codepage = CP_ACP;
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return WideCharToMultiByte( codepage, 0, src, -1, dst, 0x7fffffff, NULL, NULL );
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}
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