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wine/dlls/kernel32/format_msg.c

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/*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winternl.h"
#include "winuser.h"
#include "winnls.h"
#include "wine/unicode.h"
#include "kernel_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(resource);
/* Messages...used by FormatMessage (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.
*/
static const WCHAR PCNTFMTWSTR[] = { '%','%','%','s',0 };
static const WCHAR FMTWSTR[] = { '%','s',0 };
/**********************************************************************
* load_messageW (internal)
*/
static LPWSTR load_messageW( HMODULE module, UINT id, WORD lang )
{
const MESSAGE_RESOURCE_ENTRY *mre;
WCHAR *buffer;
TRACE("module = %p, id = %08x\n", module, id );
if (!module) module = GetModuleHandleW( NULL );
if (RtlFindMessage( module, RT_MESSAGETABLE, lang, id, &mre ) != STATUS_SUCCESS) 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;
}
/**********************************************************************
* load_messageA (internal)
*/
static LPSTR load_messageA( HMODULE module, UINT id, WORD lang )
{
const MESSAGE_RESOURCE_ENTRY *mre;
char *buffer;
TRACE("module = %p, id = %08x\n", module, id );
if (!module) module = GetModuleHandleW( NULL );
if (RtlFindMessage( module, RT_MESSAGETABLE, lang, id, &mre ) != STATUS_SUCCESS) 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;
}
/***********************************************************************
* FormatMessageA (KERNEL32.@)
* FIXME: missing wrap,
*/
DWORD WINAPI FormatMessageA(
DWORD dwFlags,
LPCVOID lpSource,
DWORD dwMessageId,
DWORD dwLanguageId,
LPSTR lpBuffer,
DWORD nSize,
va_list* _args )
{
LPDWORD args=(LPDWORD)_args;
DWORD ret = 0;
#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%x,%p,%d,0x%x,%p,%d,%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 (!lpBuffer)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
if (width && width != FORMAT_MESSAGE_MAX_WIDTH_MASK)
FIXME("line wrapping (%u) not supported.\n", width);
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_STRING)
{
from = HeapAlloc( GetProcessHeap(), 0, strlen((LPCSTR)lpSource)+1 );
strcpy( from, (LPCSTR)lpSource );
}
else {
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_HMODULE)
from = load_messageA( (HMODULE)lpSource, dwMessageId, dwLanguageId );
if (!from && (dwFlags & FORMAT_MESSAGE_FROM_SYSTEM))
from = load_messageA( kernel32_handle, dwMessageId, dwLanguageId );
if (!from)
{
SetLastError (ERROR_RESOURCE_LANG_NOT_FOUND);
return 0;
}
}
target = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, 100);
t = target;
talloced= 100;
#define ADD_TO_T(c) do { \
*t++=c;\
if ((DWORD)(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);
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 sz;
LPSTR b;
if (dwFlags & FORMAT_MESSAGE_ARGUMENT_ARRAY)
argliststart=args+insertnr-1;
else
argliststart=(*(DWORD**)args)+insertnr-1;
/* FIXME: precision and width components are not handled correctly */
if ( (strcmp(fmtstr, "%ls") == 0) || (strcmp(fmtstr,"%S") == 0) ) {
sz = WideCharToMultiByte( CP_ACP, 0, *(WCHAR**)argliststart, -1, NULL, 0, NULL, NULL);
b = HeapAlloc(GetProcessHeap(), 0, sz);
WideCharToMultiByte( CP_ACP, 0, *(WCHAR**)argliststart, -1, b, sz, NULL, NULL);
} else {
b = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sz = 1000);
/* CMF - This makes a BIG assumption about va_list */
TRACE("A BIG assumption\n");
vsnprintf(b, sz, fmtstr, (va_list) argliststart);
}
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 'n':
ADD_TO_T('\r');
ADD_TO_T('\n');
f++;
break;
case '0':
eos = TRUE;
f++;
break;
default:
ADD_TO_T(*f++);
break;
}
} else {
ch = *f;
f++;
if (ch == '\r') {
if (*f == '\n')
f++;
if(width)
ADD_TO_T(' ');
else
{
ADD_TO_T('\r');
ADD_TO_T('\n');
}
} else {
if (ch == '\n')
{
if(width)
ADD_TO_T(' ');
else
{
ADD_TO_T('\r');
ADD_TO_T('\n');
}
}
else
ADD_TO_T(ch);
}
}
}
}
*t='\0';
}
talloced = strlen(target)+1;
if (nSize && talloced<nSize) {
target = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,nSize);
}
TRACE("-- %s\n",debugstr_a(target));
if (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) {
*((LPVOID*)lpBuffer) = (LPVOID)LocalAlloc(LMEM_ZEROINIT,max(nSize, talloced));
memcpy(*(LPSTR*)lpBuffer,target,talloced);
} else {
lstrcpynA(lpBuffer,target,nSize);
}
HeapFree(GetProcessHeap(),0,target);
HeapFree(GetProcessHeap(),0,from);
ret = (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) ? strlen(*(LPSTR*)lpBuffer) : strlen(lpBuffer);
#endif /* __i386__ */
TRACE("-- returning %d\n", ret);
return ret;
}
#undef ADD_TO_T
/***********************************************************************
* FormatMessageW (KERNEL32.@)
*/
DWORD WINAPI FormatMessageW(
DWORD dwFlags,
LPCVOID lpSource,
DWORD dwMessageId,
DWORD dwLanguageId,
LPWSTR lpBuffer,
DWORD nSize,
va_list* _args )
{
LPDWORD args=(LPDWORD)_args;
#if defined(__i386__) || defined(__sparc__)
/* This implementation is completely dependent on the format of the va_list on x86 CPUs */
LPWSTR target,t;
DWORD talloced;
LPWSTR from,f;
DWORD width = dwFlags & FORMAT_MESSAGE_MAX_WIDTH_MASK;
BOOL eos = FALSE;
WCHAR ch;
TRACE("(0x%x,%p,%d,0x%x,%p,%d,%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 (!lpBuffer)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
if (width && width != FORMAT_MESSAGE_MAX_WIDTH_MASK)
FIXME("line wrapping not supported.\n");
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_STRING) {
from = HeapAlloc( GetProcessHeap(), 0, (strlenW((LPCWSTR)lpSource) + 1) *
sizeof(WCHAR) );
strcpyW( from, (LPCWSTR)lpSource );
}
else {
from = NULL;
if (dwFlags & FORMAT_MESSAGE_FROM_HMODULE)
from = load_messageW( (HMODULE)lpSource, dwMessageId, dwLanguageId );
if (!from && (dwFlags & FORMAT_MESSAGE_FROM_SYSTEM))
from = load_messageW( kernel32_handle, dwMessageId, dwLanguageId );
if (!from)
{
SetLastError (ERROR_RESOURCE_LANG_NOT_FOUND);
return 0;
}
}
target = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, 100 * sizeof(WCHAR) );
t = target;
talloced= 100;
#define ADD_TO_T(c) do {\
*t++=c;\
if ((DWORD)(t-target) == talloced) {\
target = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,talloced*2*sizeof(WCHAR));\
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;
WCHAR *fmtstr,*sprintfbuf,*x;
DWORD *argliststart;
fmtstr = NULL;
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=strchrW(f,'!'))) {
*x='\0';
fmtstr=HeapAlloc( GetProcessHeap(), 0,(strlenW(f)+2)*sizeof(WCHAR));
sprintfW(fmtstr,PCNTFMTWSTR,f);
f=x+1;
} else {
fmtstr=HeapAlloc(GetProcessHeap(),0,(strlenW(f)+2)*sizeof(WCHAR));
sprintfW(fmtstr,PCNTFMTWSTR,f);
f+=strlenW(f); /*at \0*/
}
} else {
if(!args) break;
fmtstr = HeapAlloc( GetProcessHeap(),0,3*sizeof(WCHAR));
strcpyW( fmtstr, FMTWSTR );
}
if (dwFlags & FORMAT_MESSAGE_ARGUMENT_ARRAY)
argliststart=args+insertnr-1;
else
argliststart=(*(DWORD**)args)+insertnr-1;
if (fmtstr[strlenW(fmtstr)-1]=='s' && argliststart[0]) {
DWORD xarr[3];
xarr[0]=*(argliststart+0);
/* possible invalid pointers */
xarr[1]=*(argliststart+1);
xarr[2]=*(argliststart+2);
sprintfbuf=HeapAlloc(GetProcessHeap(),0,(strlenW((LPWSTR)argliststart[0])*2+1)*sizeof(WCHAR));
/* CMF - This makes a BIG assumption about va_list */
vsprintfW(sprintfbuf, fmtstr, (va_list) xarr);
} else {
sprintfbuf=HeapAlloc(GetProcessHeap(),0,100);
/* CMF - This makes a BIG assumption about va_list */
vsprintfW(sprintfbuf, fmtstr, (va_list) argliststart);
}
x=sprintfbuf;
while (*x) {
ADD_TO_T(*x++);
}
HeapFree(GetProcessHeap(),0,sprintfbuf);
HeapFree(GetProcessHeap(),0,fmtstr);
break;
case 'n':
ADD_TO_T('\r');
ADD_TO_T('\n');
f++;
break;
case '0':
eos = TRUE;
f++;
break;
default:
ADD_TO_T(*f++);
break;
}
} else {
ch = *f;
f++;
if (ch == '\r') {
if (*f == '\n')
f++;
if(width)
ADD_TO_T(' ');
else
{
ADD_TO_T('\r');
ADD_TO_T('\n');
}
} else {
if (ch == '\n')
{
if(width)
ADD_TO_T(' ');
else
{
ADD_TO_T('\r');
ADD_TO_T('\n');
}
}
else
ADD_TO_T(ch);
}
}
}
}
*t='\0';
}
talloced = strlenW(target)+1;
if (nSize && talloced<nSize)
target = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,target,nSize*sizeof(WCHAR));
if (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) {
/* nSize is the MINIMUM size */
DWORD len = strlenW(target) + 1;
*((LPVOID*)lpBuffer) = (LPVOID)LocalAlloc(LMEM_ZEROINIT,len*sizeof(WCHAR));
strcpyW(*(LPWSTR*)lpBuffer, target);
}
else lstrcpynW(lpBuffer, target, nSize);
HeapFree(GetProcessHeap(),0,target);
HeapFree(GetProcessHeap(),0,from);
TRACE("ret=%s\n", wine_dbgstr_w((dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) ?
*(LPWSTR*)lpBuffer : lpBuffer));
return (dwFlags & FORMAT_MESSAGE_ALLOCATE_BUFFER) ?
strlenW(*(LPWSTR*)lpBuffer):
strlenW(lpBuffer);
#else
return 0;
#endif /* __i386__ */
}
#undef ADD_TO_T
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