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wine/dlls/user/lstr.c
Tony Lambregts ffc17dbe0d Fix bug in CharPrevExA().
2005-01-28 11:29:37 +00:00

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/*
* USER string functions
*
* Copyright 1993 Yngvi Sigurjonsson (yngvi@hafro.is)
* Copyright 1996 Alexandre Julliard
* Copyright 1996 Marcus Meissner
*
* 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 "config.h"
#include "wine/port.h"
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/exception.h"
#include "wine/unicode.h"
#include "wine/winbase16.h"
#include "wine/winuser16.h"
#include "excpt.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(resource);
/* filter for page-fault exceptions */
static WINE_EXCEPTION_FILTER(page_fault)
{
if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ||
GetExceptionCode() == EXCEPTION_PRIV_INSTRUCTION)
return EXCEPTION_EXECUTE_HANDLER;
return EXCEPTION_CONTINUE_SEARCH;
}
/***********************************************************************
* AnsiToOem (KEYBOARD.5)
*/
INT16 WINAPI AnsiToOem16( LPCSTR s, LPSTR d )
{
CharToOemA( s, d );
return -1;
}
/***********************************************************************
* OemToAnsi (KEYBOARD.6)
*/
INT16 WINAPI OemToAnsi16( LPCSTR s, LPSTR d )
{
OemToCharA( s, d );
return -1;
}
/***********************************************************************
* AnsiToOemBuff (KEYBOARD.134)
*/
void WINAPI AnsiToOemBuff16( LPCSTR s, LPSTR d, UINT16 len )
{
if (len != 0) CharToOemBuffA( s, d, len );
}
/***********************************************************************
* OemToAnsiBuff (KEYBOARD.135)
*/
void WINAPI OemToAnsiBuff16( LPCSTR s, LPSTR d, UINT16 len )
{
if (len != 0) OemToCharBuffA( s, d, len );
}
/***********************************************************************
* lstrcmp (USER.430)
*/
INT16 WINAPI lstrcmp16( LPCSTR str1, LPCSTR str2 )
{
return (INT16)strcmp( str1, str2 );
}
/***********************************************************************
* AnsiUpper (USER.431)
*/
SEGPTR WINAPI AnsiUpper16( SEGPTR strOrChar )
{
/* uppercase only one char if strOrChar < 0x10000 */
if (HIWORD(strOrChar))
{
CharUpperA( MapSL(strOrChar) );
return strOrChar;
}
else return (SEGPTR)CharUpperA( (LPSTR)strOrChar );
}
/***********************************************************************
* AnsiLower (USER.432)
*/
SEGPTR WINAPI AnsiLower16( SEGPTR strOrChar )
{
/* lowercase only one char if strOrChar < 0x10000 */
if (HIWORD(strOrChar))
{
CharLowerA( MapSL(strOrChar) );
return strOrChar;
}
else return (SEGPTR)CharLowerA( (LPSTR)strOrChar );
}
/***********************************************************************
* AnsiUpperBuff (USER.437)
*/
UINT16 WINAPI AnsiUpperBuff16( LPSTR str, UINT16 len )
{
CharUpperBuffA( str, len ? len : 65536 );
return len;
}
/***********************************************************************
* AnsiLowerBuff (USER.438)
*/
UINT16 WINAPI AnsiLowerBuff16( LPSTR str, UINT16 len )
{
CharLowerBuffA( str, len ? len : 65536 );
return len;
}
/***********************************************************************
* AnsiNext (USER.472)
*/
SEGPTR WINAPI AnsiNext16(SEGPTR current)
{
char *ptr = MapSL(current);
return current + (CharNextA(ptr) - ptr);
}
/***********************************************************************
* AnsiPrev (USER.473)
*/
SEGPTR WINAPI AnsiPrev16( LPCSTR start, SEGPTR current )
{
char *ptr = MapSL(current);
return current - (ptr - CharPrevA( start, ptr ));
}
/***********************************************************************
* CharNextA (USER32.@)
*/
LPSTR WINAPI CharNextA( LPCSTR ptr )
{
if (!*ptr) return (LPSTR)ptr;
if (IsDBCSLeadByte( ptr[0] ) && ptr[1]) return (LPSTR)(ptr + 2);
return (LPSTR)(ptr + 1);
}
/***********************************************************************
* CharNextExA (USER32.@)
*/
LPSTR WINAPI CharNextExA( WORD codepage, LPCSTR ptr, DWORD flags )
{
if (!*ptr) return (LPSTR)ptr;
if (IsDBCSLeadByteEx( codepage, ptr[0] ) && ptr[1]) return (LPSTR)(ptr + 2);
return (LPSTR)(ptr + 1);
}
/***********************************************************************
* CharNextExW (USER32.@)
*/
LPWSTR WINAPI CharNextExW( WORD codepage, LPCWSTR ptr, DWORD flags )
{
/* doesn't make sense, there are no codepages for Unicode */
return NULL;
}
/***********************************************************************
* CharNextW (USER32.@)
*/
LPWSTR WINAPI CharNextW(LPCWSTR x)
{
if (*x) x++;
return (LPWSTR)x;
}
/***********************************************************************
* CharPrevA (USER32.@)
*/
LPSTR WINAPI CharPrevA( LPCSTR start, LPCSTR ptr )
{
while (*start && (start < ptr))
{
LPCSTR next = CharNextA( start );
if (next >= ptr) break;
start = next;
}
return (LPSTR)start;
}
/***********************************************************************
* CharPrevExA (USER32.@)
*/
LPSTR WINAPI CharPrevExA( WORD codepage, LPCSTR start, LPCSTR ptr, DWORD flags )
{
while (*start && (start < ptr))
{
LPCSTR next = CharNextExA( codepage, start, flags );
if (next >= ptr) break;
start = next;
}
return (LPSTR)start;
}
/***********************************************************************
* CharPrevExW (USER32.@)
*/
LPSTR WINAPI CharPrevExW( WORD codepage, LPCWSTR start, LPCWSTR ptr, DWORD flags )
{
/* doesn't make sense, there are no codepages for Unicode */
return NULL;
}
/***********************************************************************
* CharPrevW (USER32.@)
*/
LPWSTR WINAPI CharPrevW(LPCWSTR start,LPCWSTR x)
{
if (x>start) return (LPWSTR)(x-1);
else return (LPWSTR)x;
}
/***********************************************************************
* CharToOemA (USER32.@)
*/
BOOL WINAPI CharToOemA( LPCSTR s, LPSTR d )
{
if ( !s || !d ) return TRUE;
return CharToOemBuffA( s, d, strlen( s ) + 1 );
}
/***********************************************************************
* CharToOemBuffA (USER32.@)
*/
BOOL WINAPI CharToOemBuffA( LPCSTR s, LPSTR d, DWORD len )
{
WCHAR *bufW;
bufW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
if( bufW )
{
MultiByteToWideChar( CP_ACP, 0, s, len, bufW, len );
WideCharToMultiByte( CP_OEMCP, 0, bufW, len, d, len, NULL, NULL );
HeapFree( GetProcessHeap(), 0, bufW );
}
return TRUE;
}
/***********************************************************************
* CharToOemBuffW (USER32.@)
*/
BOOL WINAPI CharToOemBuffW( LPCWSTR s, LPSTR d, DWORD len )
{
if ( !s || !d ) return TRUE;
WideCharToMultiByte( CP_OEMCP, 0, s, len, d, len, NULL, NULL );
return TRUE;
}
/***********************************************************************
* CharToOemW (USER32.@)
*/
BOOL WINAPI CharToOemW( LPCWSTR s, LPSTR d )
{
return CharToOemBuffW( s, d, strlenW( s ) + 1 );
}
/***********************************************************************
* OemToCharA (USER32.@)
*/
BOOL WINAPI OemToCharA( LPCSTR s, LPSTR d )
{
return OemToCharBuffA( s, d, strlen( s ) + 1 );
}
/***********************************************************************
* OemToCharBuffA (USER32.@)
*/
BOOL WINAPI OemToCharBuffA( LPCSTR s, LPSTR d, DWORD len )
{
WCHAR *bufW;
bufW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
if( bufW )
{
MultiByteToWideChar( CP_OEMCP, 0, s, len, bufW, len );
WideCharToMultiByte( CP_ACP, 0, bufW, len, d, len, NULL, NULL );
HeapFree( GetProcessHeap(), 0, bufW );
}
return TRUE;
}
/***********************************************************************
* OemToCharBuffW (USER32.@)
*/
BOOL WINAPI OemToCharBuffW( LPCSTR s, LPWSTR d, DWORD len )
{
MultiByteToWideChar( CP_OEMCP, 0, s, len, d, len );
return TRUE;
}
/***********************************************************************
* OemToCharW (USER32.@)
*/
BOOL WINAPI OemToCharW( LPCSTR s, LPWSTR d )
{
return OemToCharBuffW( s, d, strlen( s ) + 1 );
}
/***********************************************************************
* CharLowerA (USER32.@)
*/
LPSTR WINAPI CharLowerA(LPSTR str)
{
if (!HIWORD(str))
{
char ch = LOWORD(str);
CharLowerBuffA( &ch, 1 );
return (LPSTR)(UINT_PTR)(BYTE)ch;
}
__TRY
{
CharLowerBuffA( str, strlen(str) );
}
__EXCEPT(page_fault)
{
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
__ENDTRY
return str;
}
/***********************************************************************
* CharUpperA (USER32.@)
*/
LPSTR WINAPI CharUpperA(LPSTR str)
{
if (!HIWORD(str))
{
char ch = LOWORD(str);
CharUpperBuffA( &ch, 1 );
return (LPSTR)(UINT_PTR)(BYTE)ch;
}
__TRY
{
CharUpperBuffA( str, strlen(str) );
}
__EXCEPT(page_fault)
{
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
__ENDTRY
return str;
}
/***********************************************************************
* CharLowerW (USER32.@)
*/
LPWSTR WINAPI CharLowerW(LPWSTR x)
{
if (HIWORD(x)) return strlwrW(x);
else return (LPWSTR)((UINT)tolowerW(LOWORD(x)));
}
/***********************************************************************
* CharUpperW (USER32.@)
*/
LPWSTR WINAPI CharUpperW(LPWSTR x)
{
if (HIWORD(x)) return struprW(x);
else return (LPWSTR)((UINT)toupperW(LOWORD(x)));
}
/***********************************************************************
* CharLowerBuffA (USER32.@)
*/
DWORD WINAPI CharLowerBuffA( LPSTR str, DWORD len )
{
DWORD lenW;
WCHAR buffer[32];
WCHAR *strW = buffer;
if (!str) return 0; /* YES */
lenW = MultiByteToWideChar(CP_ACP, 0, str, len, NULL, 0);
if (lenW > sizeof(buffer)/sizeof(WCHAR))
{
strW = HeapAlloc(GetProcessHeap(), 0, lenW * sizeof(WCHAR));
if (!strW) return 0;
}
MultiByteToWideChar(CP_ACP, 0, str, len, strW, lenW);
CharLowerBuffW(strW, lenW);
len = WideCharToMultiByte(CP_ACP, 0, strW, lenW, str, len, NULL, NULL);
if (strW != buffer) HeapFree(GetProcessHeap(), 0, strW);
return len;
}
/***********************************************************************
* CharLowerBuffW (USER32.@)
*/
DWORD WINAPI CharLowerBuffW( LPWSTR str, DWORD len )
{
DWORD ret = len;
if (!str) return 0; /* YES */
for (; len; len--, str++) *str = tolowerW(*str);
return ret;
}
/***********************************************************************
* CharUpperBuffA (USER32.@)
*/
DWORD WINAPI CharUpperBuffA( LPSTR str, DWORD len )
{
DWORD lenW;
WCHAR buffer[32];
WCHAR *strW = buffer;
if (!str) return 0; /* YES */
lenW = MultiByteToWideChar(CP_ACP, 0, str, len, NULL, 0);
if (lenW > sizeof(buffer)/sizeof(WCHAR))
{
strW = HeapAlloc(GetProcessHeap(), 0, lenW * sizeof(WCHAR));
if (!strW) return 0;
}
MultiByteToWideChar(CP_ACP, 0, str, len, strW, lenW);
CharUpperBuffW(strW, lenW);
len = WideCharToMultiByte(CP_ACP, 0, strW, lenW, str, len, NULL, NULL);
if (strW != buffer) HeapFree(GetProcessHeap(), 0, strW);
return len;
}
/***********************************************************************
* CharUpperBuffW (USER32.@)
*/
DWORD WINAPI CharUpperBuffW( LPWSTR str, DWORD len )
{
DWORD ret = len;
if (!str) return 0; /* YES */
for (; len; len--, str++) *str = toupperW(*str);
return ret;
}
/***********************************************************************
* IsCharLower (USER.436)
* IsCharLowerA (USER32.@)
*/
BOOL WINAPI IsCharLowerA(CHAR x)
{
WCHAR wch;
MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
return IsCharLowerW(wch);
}
/***********************************************************************
* IsCharLowerW (USER32.@)
*/
BOOL WINAPI IsCharLowerW(WCHAR x)
{
return (get_char_typeW(x) & C1_LOWER) != 0;
}
/***********************************************************************
* IsCharUpper (USER.435)
* IsCharUpperA (USER32.@)
*/
BOOL WINAPI IsCharUpperA(CHAR x)
{
WCHAR wch;
MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
return IsCharUpperW(wch);
}
/***********************************************************************
* IsCharUpperW (USER32.@)
*/
BOOL WINAPI IsCharUpperW(WCHAR x)
{
return (get_char_typeW(x) & C1_UPPER) != 0;
}
/***********************************************************************
* IsCharAlphaNumeric (USER.434)
* IsCharAlphaNumericA (USER32.@)
*/
BOOL WINAPI IsCharAlphaNumericA(CHAR x)
{
WCHAR wch;
MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
return IsCharAlphaNumericW(wch);
}
/***********************************************************************
* IsCharAlphaNumericW (USER32.@)
*/
BOOL WINAPI IsCharAlphaNumericW(WCHAR x)
{
return (get_char_typeW(x) & (C1_ALPHA|C1_DIGIT)) != 0;
}
/***********************************************************************
* IsCharAlpha (USER.433)
* IsCharAlphaA (USER32.@)
*/
BOOL WINAPI IsCharAlphaA(CHAR x)
{
WCHAR wch;
MultiByteToWideChar(CP_ACP, 0, &x, 1, &wch, 1);
return IsCharAlphaW(wch);
}
/***********************************************************************
* IsCharAlphaW (USER32.@)
*/
BOOL WINAPI IsCharAlphaW(WCHAR x)
{
return (get_char_typeW(x) & C1_ALPHA) != 0;
}
/***********************************************************************
* FormatMessage (USER.606)
*/
DWORD WINAPI FormatMessage16(
DWORD dwFlags,
SEGPTR lpSource, /* [in] NOTE: not always a valid pointer */
WORD dwMessageId,
WORD dwLanguageId,
LPSTR lpBuffer, /* [out] NOTE: *((HLOCAL16*)) for FORMAT_MESSAGE_ALLOCATE_BUFFER*/
WORD nSize,
LPDWORD args /* [in] NOTE: va_list *args */
) {
#ifdef __i386__
/* This implementation is completely dependent on the format of the va_list on x86 CPUs */
LPSTR target,t;
DWORD talloced;
LPSTR from,f;
DWORD width = dwFlags & FORMAT_MESSAGE_MAX_WIDTH_MASK;
BOOL eos = FALSE;
LPSTR allocstring = NULL;
TRACE("(0x%lx,%lx,%d,0x%x,%p,%d,%p)\n",
dwFlags,lpSource,dwMessageId,dwLanguageId,lpBuffer,nSize,args);
if ((dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
&& (dwFlags & FORMAT_MESSAGE_FROM_HMODULE)) return 0;
if ((dwFlags & FORMAT_MESSAGE_FROM_STRING)
&&((dwFlags & FORMAT_MESSAGE_FROM_SYSTEM)
|| (dwFlags & FORMAT_MESSAGE_FROM_HMODULE))) return 0;
if (width && width != FORMAT_MESSAGE_MAX_WIDTH_MASK)
FIXME("line wrapping (%lu) not supported.\n", width);
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_STRING)
{
char *source = MapSL(lpSource);
from = HeapAlloc( GetProcessHeap(), 0, strlen(source)+1 );
strcpy( from, source );
}
if (dwFlags & FORMAT_MESSAGE_FROM_SYSTEM) {
from = HeapAlloc( GetProcessHeap(),0,200 );
sprintf(from,"Systemmessage, messageid = 0x%08x\n",dwMessageId);
}
if (dwFlags & FORMAT_MESSAGE_FROM_HMODULE) {
INT16 bufsize;
HINSTANCE16 hinst16 = ((HINSTANCE16)lpSource & 0xffff);
dwMessageId &= 0xFFFF;
bufsize=LoadString16(hinst16,dwMessageId,NULL,0);
if (bufsize) {
from = HeapAlloc( GetProcessHeap(), 0, bufsize +1);
LoadString16(hinst16,dwMessageId,from,bufsize+1);
}
}
target = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, 100);
t = target;
talloced= 100;
#define ADD_TO_T(c) \
*t++=c;\
if (t-target == talloced) {\
target = (char*)HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,talloced*2);\
t = target+talloced;\
talloced*=2;\
}
if (from) {
f=from;
while (*f && !eos) {
if (*f=='%') {
int insertnr;
char *fmtstr,*x,*lastf;
DWORD *argliststart;
fmtstr = NULL;
lastf = f;
f++;
if (!*f) {
ADD_TO_T('%');
continue;
}
switch (*f) {
case '1':case '2':case '3':case '4':case '5':
case '6':case '7':case '8':case '9':
insertnr=*f-'0';
switch (f[1]) {
case '0':case '1':case '2':case '3':
case '4':case '5':case '6':case '7':
case '8':case '9':
f++;
insertnr=insertnr*10+*f-'0';
f++;
break;
default:
f++;
break;
}
if (*f=='!') {
f++;
if (NULL!=(x=strchr(f,'!'))) {
*x='\0';
fmtstr=HeapAlloc(GetProcessHeap(),0,strlen(f)+2);
sprintf(fmtstr,"%%%s",f);
f=x+1;
} else {
fmtstr=HeapAlloc(GetProcessHeap(),0,strlen(f)+2);
sprintf(fmtstr,"%%%s",f);
f+=strlen(f); /*at \0*/
}
}
else
{
if(!args) break;
fmtstr=HeapAlloc( GetProcessHeap(), 0, 3 );
strcpy( fmtstr, "%s" );
}
if (args) {
int ret;
int sz;
LPSTR b = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sz = 100);
argliststart=args+insertnr-1;
/* CMF - This makes a BIG assumption about va_list */
while ((ret = vsnprintf(b, sz, fmtstr, (va_list) argliststart) < 0) || (ret >= sz)) {
sz = (ret == -1 ? sz + 100 : ret + 1);
b = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, b, sz);
}
for (x=b; *x; x++) ADD_TO_T(*x);
HeapFree(GetProcessHeap(), 0, b);
} else {
/* NULL args - copy formatstr
* (probably wrong)
*/
while ((lastf<f)&&(*lastf)) {
ADD_TO_T(*lastf++);
}
}
HeapFree(GetProcessHeap(),0,fmtstr);
break;
case '0': /* Just stop processing format string */
eos = TRUE;
f++;
break;
case 'n': /* 16 bit version just outputs 'n' */
default:
ADD_TO_T(*f++);
break;
}
} else { /* '\n' or '\r' gets mapped to "\r\n" */
if(*f == '\n' || *f == '\r') {
if (width == 0) {
ADD_TO_T('\r');
ADD_TO_T('\n');
if(*f++ == '\r' && *f == '\n')
f++;
}
} else {
ADD_TO_T(*f++);
}
}
}
*t='\0';
}
talloced = strlen(target)+1;
if (nSize && talloced<nSize) {
target = (char*)HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,nSize);
}
TRACE("-- %s\n",debugstr_a(target));
if (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) {
/* nSize is the MINIMUM size */
HLOCAL16 h = LocalAlloc16(LPTR,talloced);
SEGPTR ptr = LocalLock16(h);
allocstring = MapSL( ptr );
memcpy( allocstring,target,talloced);
LocalUnlock16( h );
*((HLOCAL16*)lpBuffer) = h;
} else
lstrcpynA(lpBuffer,target,nSize);
HeapFree(GetProcessHeap(),0,target);
HeapFree(GetProcessHeap(),0,from);
return (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) ?
strlen(allocstring):
strlen(lpBuffer);
#else
return 0;
#endif /* __i386__ */
}
#undef ADD_TO_T
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