wine/memory/string.c

318 lines
7.4 KiB
C

/*
* String functions
*
* Copyright 1993 Yngvi Sigurjonsson
* Copyright 1996 Alexandre Julliard
*/
#include <ctype.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wine/winbase16.h"
#include "wine/exception.h"
#include "wine/unicode.h"
#include "winerror.h"
#include "winnls.h"
#include "ldt.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(string);
/* filter for page-fault exceptions */
static WINE_EXCEPTION_FILTER(page_fault)
{
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
return EXCEPTION_EXECUTE_HANDLER;
return EXCEPTION_CONTINUE_SEARCH;
}
/***********************************************************************
* hmemcpy16 (KERNEL.348)
*/
void WINAPI hmemcpy16( LPVOID dst, LPCVOID src, LONG count )
{
memcpy( dst, src, count );
}
/***********************************************************************
* lstrcat16 (KERNEL.89)
*/
SEGPTR WINAPI lstrcat16( SEGPTR dst, LPCSTR src )
{
/* Windows does not check for NULL pointers here, so we don't either */
strcat( (LPSTR)PTR_SEG_TO_LIN(dst), src );
return dst;
}
/***********************************************************************
* lstrcatA (KERNEL32.599)
*/
LPSTR WINAPI lstrcatA( LPSTR dst, LPCSTR src )
{
__TRY
{
strcat( dst, src );
}
__EXCEPT(page_fault)
{
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
__ENDTRY
return dst;
}
/***********************************************************************
* lstrcatW (KERNEL32.600)
*/
LPWSTR WINAPI lstrcatW( LPWSTR dst, LPCWSTR src )
{
__TRY
{
strcatW( dst, src );
}
__EXCEPT(page_fault)
{
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
__ENDTRY
return dst;
}
/***********************************************************************
* lstrcatn16 (KERNEL.352)
*/
SEGPTR WINAPI lstrcatn16( SEGPTR dst, LPCSTR src, INT16 n )
{
LPSTR p = (LPSTR)PTR_SEG_TO_LIN(dst);
while (*p) p++;
if ((n -= (p - (LPSTR)PTR_SEG_TO_LIN(dst))) <= 0) return dst;
lstrcpynA( p, src, n );
return dst;
}
/***********************************************************************
* lstrcmpA (KERNEL.602)
*/
INT WINAPI lstrcmpA( LPCSTR str1, LPCSTR str2 )
{
return CompareStringA(LOCALE_SYSTEM_DEFAULT,0,str1,-1,str2,-1) - 2 ;
}
/***********************************************************************
* lstrcmpW (KERNEL.603)
* FIXME : should call CompareStringW, when it is implemented.
* This implementation is not "word sort", as it should.
*/
INT WINAPI lstrcmpW( LPCWSTR str1, LPCWSTR str2 )
{
TRACE("%s and %s\n",
debugstr_w (str1), debugstr_w (str2));
if (!str1 || !str2) {
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
while (*str1 && (*str1 == *str2)) { str1++; str2++; }
return (INT)(*str1 - *str2);
}
/***********************************************************************
* lstrcmpiA (KERNEL32.605)
*/
INT WINAPI lstrcmpiA( LPCSTR str1, LPCSTR str2 )
{ TRACE("strcmpi %s and %s\n",
debugstr_a (str1), debugstr_a (str2));
return CompareStringA(LOCALE_SYSTEM_DEFAULT,NORM_IGNORECASE,str1,-1,str2,-1)-2;
}
/***********************************************************************
* lstrcmpiW (KERNEL32.606)
*/
INT WINAPI lstrcmpiW( LPCWSTR str1, LPCWSTR str2 )
{
if (!str1 || !str2) {
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
return strcmpiW( str1, str2 );
}
/***********************************************************************
* lstrcpy16 (KERNEL.88)
*/
SEGPTR WINAPI lstrcpy16( SEGPTR dst, LPCSTR src )
{
if (!lstrcpyA( PTR_SEG_TO_LIN(dst), src )) dst = 0;
return dst;
}
/***********************************************************************
* lstrcpyA (KERNEL32.608)
*/
LPSTR WINAPI lstrcpyA( LPSTR dst, LPCSTR src )
{
__TRY
{
/* this is how Windows does it */
memmove( dst, src, strlen(src)+1 );
}
__EXCEPT(page_fault)
{
ERR("(%p, %p): page fault occurred ! Caused by bug ?\n", dst, src);
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
__ENDTRY
return dst;
}
/***********************************************************************
* lstrcpyW (KERNEL32.609)
*/
LPWSTR WINAPI lstrcpyW( LPWSTR dst, LPCWSTR src )
{
__TRY
{
strcpyW( dst, src );
}
__EXCEPT(page_fault)
{
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
__ENDTRY
return dst;
}
/***********************************************************************
* lstrcpyn16 (KERNEL.353)
*/
SEGPTR WINAPI lstrcpyn16( SEGPTR dst, LPCSTR src, INT16 n )
{
lstrcpynA( (LPSTR)PTR_SEG_TO_LIN(dst), src, n );
return dst;
}
/***********************************************************************
* lstrcpynA (KERNEL32.611)
* Note: this function differs from the UNIX strncpy, it _always_ writes
* a terminating \0
*/
LPSTR WINAPI lstrcpynA( LPSTR dst, LPCSTR src, INT n )
{
LPSTR p = dst;
TRACE("(%p, %s, %i)\n", dst, debugstr_an(src,n), n);
/* In real windows the whole function is protected by an exception handler
* that returns ERROR_INVALID_PARAMETER on faulty parameters
* We currently just check for NULL.
*/
if (!dst || !src) {
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
while ((n-- > 1) && *src) *p++ = *src++;
if (n >= 0) *p = 0;
return dst;
}
/***********************************************************************
* lstrcpynW (KERNEL32.612)
* Note: this function differs from the UNIX strncpy, it _always_ writes
* a terminating \0
*/
LPWSTR WINAPI lstrcpynW( LPWSTR dst, LPCWSTR src, INT n )
{
LPWSTR p = dst;
TRACE("(%p, %s, %i)\n", dst, debugstr_wn(src,n), n);
/* In real windows the whole function is protected by an exception handler
* that returns ERROR_INVALID_PARAMETER on faulty parameters
* We currently just check for NULL.
*/
if (!dst || !src) {
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
while ((n-- > 1) && *src) *p++ = *src++;
if (n >= 0) *p = 0;
return dst;
}
/***********************************************************************
* lstrlen16 (KERNEL.90)
*/
INT16 WINAPI lstrlen16( LPCSTR str )
{
return (INT16)lstrlenA( str );
}
/***********************************************************************
* lstrlenA (KERNEL32.614)
*/
INT WINAPI lstrlenA( LPCSTR str )
{
INT ret;
__TRY
{
ret = strlen(str);
}
__EXCEPT(page_fault)
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
__ENDTRY
return ret;
}
/***********************************************************************
* lstrlenW (KERNEL32.615)
*/
INT WINAPI lstrlenW( LPCWSTR str )
{
INT ret;
__TRY
{
ret = strlenW(str);
}
__EXCEPT(page_fault)
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
__ENDTRY
return ret;
}
/***********************************************************************
* UnicodeToAnsi (KERNEL.434)
*/
INT16 WINAPI UnicodeToAnsi16( LPCWSTR src, LPSTR dst, INT16 codepage )
{
if ( codepage == -1 )
codepage = CP_ACP;
return WideCharToMultiByte( codepage, 0, src, -1, dst, 0x7fffffff, NULL, NULL );
}