📄 errormsg.c
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/* $Id: errormsg.c 25633 2007-01-26 07:22:19Z ion $
*
* reactos/lib/kernel32/misc/errormsg.c
* Wine calls this file now as kernel/format_msg.c
*
*/
/*
* FormatMessage implementation
*
* 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 <k32.h>
#define NDEBUG
#include "../include/debug.h"
#include "wine/unicode.h"
#define TRACE DPRINT
#define FIXME DPRINT
static const WCHAR PCNTFMTWSTR[] = { '%','%','%','s',0 };
static const WCHAR FMTWSTR[] = { '%','s',0 };
static const WCHAR kernel32W[] = {'k','e','r','n','e','l','3','2',0};
/* strdup macros */
/* DO NOT USE IT!! it will go away soon */
__inline static LPSTR HEAP_strdupWtoA( HANDLE heap, DWORD flags, LPCWSTR str )
{
LPSTR ret;
INT len;
if (!str) return NULL;
len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL );
ret = RtlAllocateHeap(RtlGetProcessHeap(), flags, len );
if(ret) WideCharToMultiByte( CP_ACP, 0, str, -1, ret, len, NULL, NULL );
return ret;
}
/* Messages...used by FormatMessage32* (KERNEL32.something)
*
* They can be specified either directly or using a message ID and
* loading them from the resource.
*
* The resourcedata has following format:
* start:
* 0: DWORD nrofentries
* nrofentries * subentry:
* 0: DWORD firstentry
* 4: DWORD lastentry
* 8: DWORD offset from start to the stringentries
*
* (lastentry-firstentry) * stringentry:
* 0: WORD len (0 marks end) [ includes the 4 byte header length ]
* 2: WORD flags
* 4: CHAR[len-4]
* (stringentry i of a subentry refers to the ID 'firstentry+i')
*
* Yes, ANSI strings in win32 resources. Go figure.
*/
/**********************************************************************
* load_messageA (internal)
*/
static LPSTR load_messageA( HMODULE module, UINT id, WORD lang )
{
PRTL_MESSAGE_RESOURCE_ENTRY mre;
char *buffer;
NTSTATUS Status;
TRACE("module = %p, id = %08x\n", module, id );
if (!module) module = GetModuleHandleW( NULL );
Status = RtlFindMessage( module, (ULONG) RT_MESSAGETABLE, lang, id, &mre );
if (!NT_SUCCESS(Status))
return NULL;
if (mre->Flags & MESSAGE_RESOURCE_UNICODE)
{
int len = WideCharToMultiByte( CP_ACP, 0, (const WCHAR *)mre->Text, -1, NULL, 0, NULL, NULL );
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len ))) return NULL;
WideCharToMultiByte( CP_ACP, 0, (const WCHAR *)mre->Text, -1, buffer, len, NULL, NULL );
}
else
{
int len = strlen((const char*)mre->Text) + 1;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len ))) return NULL;
memcpy( buffer, mre->Text, len );
}
//TRACE("returning %s\n", wine_dbgstr_a(buffer));
return buffer;
}
static LPWSTR load_messageW( HMODULE module, UINT id, WORD lang )
{
PRTL_MESSAGE_RESOURCE_ENTRY mre;
WCHAR *buffer;
NTSTATUS Status;
TRACE("module = %p, id = %08x\n", module, id );
if (!module) module = GetModuleHandleW( NULL );
Status = RtlFindMessage( module, (ULONG) RT_MESSAGETABLE, lang, id, &mre );
if (!NT_SUCCESS(Status))
return NULL;
if (mre->Flags & MESSAGE_RESOURCE_UNICODE)
{
int len = (strlenW( (const WCHAR *)mre->Text ) + 1) * sizeof(WCHAR);
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len ))) return NULL;
memcpy( buffer, mre->Text, len );
}
else
{
int len = MultiByteToWideChar( CP_ACP, 0, (const char *)mre->Text, -1, NULL, 0 );
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) return NULL;
MultiByteToWideChar( CP_ACP, 0, (const char*)mre->Text, -1, buffer, len );
}
//TRACE("returning %s\n", wine_dbgstr_w(buffer));
return buffer;
}
/***********************************************************************
* FormatMessageA (KERNEL32.@)
* FIXME: missing wrap,
*
* @implemented
*/
DWORD WINAPI FormatMessageA(
DWORD dwFlags,
LPCVOID lpSource,
DWORD dwMessageId,
DWORD dwLanguageId,
LPSTR lpBuffer,
DWORD nSize,
va_list* _args )
{
LPDWORD args=(LPDWORD)_args;
HMODULE kernel32_handle = GetModuleHandleW(kernel32W);
#if defined(__i386__) || defined(__sparc__)
/* 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;
CHAR ch;
TRACE("(0x%lx,%p,%ld,0x%lx,%p,%ld,%p)\n",
dwFlags,lpSource,dwMessageId,dwLanguageId,lpBuffer,nSize,args);
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)
{
from = HeapAlloc( GetProcessHeap(), 0, strlen((LPCSTR)lpSource)+1 );
if (from == NULL)
{
return 0;
}
strcpy( from, (LPCSTR)lpSource );
}
else {
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_HMODULE)
from = load_messageA( (HMODULE)lpSource, dwMessageId, (WORD)dwLanguageId );
if (!from && (dwFlags & FORMAT_MESSAGE_FROM_SYSTEM))
from = load_messageA( kernel32_handle, dwMessageId, (WORD)dwLanguageId );
if (!from)
{
SetLastError (ERROR_RESOURCE_LANG_NOT_FOUND);
return 0;
}
}
target = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, 100);
if(target == NULL)
{
HeapFree(GetProcessHeap(),0,from);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
t = target;
talloced= 100;
#define ADD_TO_T(c) do { \
*t++=c;\
if (t-target == talloced) {\
target = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,talloced*2);\
t = target+talloced;\
talloced*=2;\
}\
} while (0)
if (from) {
f=from;
if (dwFlags & FORMAT_MESSAGE_IGNORE_INSERTS) {
while (*f && !eos)
ADD_TO_T(*f++);
}
else {
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);
if(fmtstr == NULL)
{
HeapFree(GetProcessHeap(),0,from);
HeapFree(GetProcessHeap(),0,target);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
sprintf(fmtstr,"%%%s",f);
f=x+1;
} else {
fmtstr=HeapAlloc(GetProcessHeap(),0,strlen(f)+2);
if(fmtstr == NULL)
{
HeapFree(GetProcessHeap(),0,from);
HeapFree(GetProcessHeap(),0,target);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
sprintf(fmtstr,"%%%s",f);
f+=strlen(f); /*at \0*/
}
} else {
if(!args) break;
fmtstr = HeapAlloc(GetProcessHeap(),0,3);
if(fmtstr == NULL)
{
HeapFree(GetProcessHeap(),0,from);
HeapFree(GetProcessHeap(),0,target);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
strcpy( fmtstr, "%s" );
}
if (args) {
int sz;
LPSTR b;
if (dwFlags & FORMAT_MESSAGE_ARGUMENT_ARRAY)
argliststart=args+insertnr-1;
else
argliststart=(*(DWORD**)args)+insertnr-1;
b = NULL;
sz = 0;
do {
if (b) {
HeapFree(GetProcessHeap(), 0, b);
}
sz += 256;
b = HeapAlloc(GetProcessHeap(), 0, sz);
/* CMF - This makes a BIG assumption about va_list */
} while (0 > _vsnprintf(b, sz, fmtstr, (va_list) argliststart));
x=b;
while(*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);
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