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Avoid non-portable va_list manipulations.

This commit is contained in:
Alexandre Julliard 2005-09-12 11:13:05 +00:00
parent e33f622bd1
commit 92a5149540
1 changed files with 34 additions and 56 deletions
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82
dlls/msi/msiquery.c
View File

@ -139,62 +139,27 @@ UINT MSI_DatabaseOpenViewW(MSIDATABASE *db,
return r;
}
static UINT MSI_OpenQueryV( MSIDATABASE *db, MSIQUERY **view,
LPCWSTR fmt, va_list args )
{
LPWSTR szQuery;
LPCWSTR p;
UINT sz, rc;
va_list va;
/* figure out how much space we need to allocate */
va = args;
sz = lstrlenW(fmt) + 1;
p = fmt;
while (*p)
{
p = strchrW(p, '%');
if (!p)
break;
p++;
switch (*p)
{
case 's': /* a string */
sz += lstrlenW(va_arg(va,LPCWSTR));
break;
case 'd':
case 'i': /* an integer -2147483648 seems to be longest */
sz += 3*sizeof(int);
(void)va_arg(va,int);
break;
case '%': /* a single % - leave it alone */
break;
default:
FIXME("Unhandled character type %c\n",*p);
}
p++;
}
/* construct the string */
szQuery = HeapAlloc(GetProcessHeap(), 0, sz*sizeof(WCHAR));
va = args;
vsnprintfW(szQuery, sz, fmt, va);
/* perform the query */
rc = MSI_DatabaseOpenViewW(db, szQuery, view);
HeapFree(GetProcessHeap(), 0, szQuery);
return rc;
}
UINT MSI_OpenQuery( MSIDATABASE *db, MSIQUERY **view, LPCWSTR fmt, ... )
{
UINT r;
int size = 100, res;
LPWSTR query;
/* construct the string */
for (;;)
{
va_list va;
query = HeapAlloc( GetProcessHeap(), 0, size*sizeof(WCHAR) );
va_start(va, fmt);
r = MSI_OpenQueryV( db, view, fmt, va );
res = vsnprintfW(query, size, fmt, va);
va_end(va);
if (res == -1) size *= 2;
else if (res >= size) size = res + 1;
else break;
}
/* perform the query */
r = MSI_DatabaseOpenViewW(db, query, view);
HeapFree(GetProcessHeap(), 0, query);
return r;
}
@ -240,11 +205,24 @@ MSIRECORD *MSI_QueryGetRecord( MSIDATABASE *db, LPCWSTR fmt, ... )
MSIRECORD *rec = NULL;
MSIQUERY *view = NULL;
UINT r;
va_list va;
int size = 100, res;
LPWSTR query;
/* construct the string */
for (;;)
{
va_list va;
query = HeapAlloc( GetProcessHeap(), 0, size*sizeof(WCHAR) );
va_start(va, fmt);
r = MSI_OpenQueryV( db, &view, fmt, va );
res = vsnprintfW(query, size, fmt, va);
va_end(va);
if (res == -1) size *= 2;
else if (res >= size) size = res + 1;
else break;
}
/* perform the query */
r = MSI_DatabaseOpenViewW(db, query, &view);
HeapFree(GetProcessHeap(), 0, query);
if( r == ERROR_SUCCESS )
{