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Man, I knew I would need getOSInfo() as soon as I deleted it!
Apparently Win9x has the Unicode entry points, they just don't work, so
 only do a real lookup on NT-based platforms, and just force the
 fallbacks on 95/98/ME systems.
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icculus committed Mar 26, 2007
1 parent c771a65 commit 49c576280dd8415386ffebfd03bf9febf4210dff
Showing with 44 additions and 17 deletions.
  1. +44 −17 platform/windows.c
@@ -104,7 +104,9 @@ typedef struct
int readonly;
} WinApiFile;


static char *userDir = NULL;
static int osHasUnicode = 0;


/* pointers for APIs that may not exist on some Windows versions... */
@@ -263,37 +265,46 @@ static int findApiSymbols(void)
{
HMODULE dll = NULL;

#define LOOKUP_NOFALLBACK(x) { symLookup(dll, (void **) &p##x, #x); }
#define LOOKUP(x) { \
if (!symLookup(dll, (void **) &p##x, #x)) \
#define LOOKUP_NOFALLBACK(x, reallyLook) { \
if (reallyLook) \
symLookup(dll, (void **) &p##x, #x); \
else \
p##x = NULL; \
}

#define LOOKUP(x, reallyLook) { \
if ((!reallyLook) || (!symLookup(dll, (void **) &p##x, #x))) \
p##x = fallback##x; \
}

/* Apparently Win9x HAS the Unicode entry points, they just don't WORK. */
/* ...so don't look them up unless we're on NT+. (see osHasUnicode.) */

dll = libUserEnv = LoadLibraryA("userenv.dll");
if (dll != NULL)
LOOKUP_NOFALLBACK(GetUserProfileDirectoryW);
LOOKUP_NOFALLBACK(GetUserProfileDirectoryW, osHasUnicode);

/* !!! FIXME: what do they call advapi32.dll on Win64? */
dll = libAdvApi32 = LoadLibraryA("advapi32.dll");
if (dll != NULL)
LOOKUP(GetUserNameW);
LOOKUP(GetUserNameW, osHasUnicode);

/* !!! FIXME: what do they call kernel32.dll on Win64? */
dll = libKernel32 = LoadLibraryA("kernel32.dll");
if (dll != NULL)
{
LOOKUP_NOFALLBACK(GetFileAttributesExA);
LOOKUP_NOFALLBACK(GetFileAttributesExW);
LOOKUP(GetModuleFileNameW);
LOOKUP(FormatMessageW);
LOOKUP_NOFALLBACK(FindFirstFileW);
LOOKUP_NOFALLBACK(FindNextFileW);
LOOKUP(GetFileAttributesW);
LOOKUP(GetCurrentDirectoryW);
LOOKUP(CreateDirectoryW);
LOOKUP(RemoveDirectoryW);
LOOKUP(CreateFileW);
LOOKUP(DeleteFileW);
LOOKUP_NOFALLBACK(GetFileAttributesExA, 1);
LOOKUP_NOFALLBACK(GetFileAttributesExW, osHasUnicode);
LOOKUP_NOFALLBACK(FindFirstFileW, osHasUnicode);
LOOKUP_NOFALLBACK(FindNextFileW, osHasUnicode);
LOOKUP(GetModuleFileNameW, osHasUnicode);
LOOKUP(FormatMessageW, osHasUnicode);
LOOKUP(GetFileAttributesW, osHasUnicode);
LOOKUP(GetCurrentDirectoryW, osHasUnicode);
LOOKUP(CreateDirectoryW, osHasUnicode);
LOOKUP(RemoveDirectoryW, osHasUnicode);
LOOKUP(CreateFileW, osHasUnicode);
LOOKUP(DeleteFileW, osHasUnicode);
} /* if */

#undef LOOKUP_NOFALLBACK
@@ -873,8 +884,24 @@ int __PHYSFS_platformMkDir(const char *path)
} /* __PHYSFS_platformMkDir */


/*
* Get OS info and save the important parts.
*
* Returns non-zero if successful, otherwise it returns zero on failure.
*/
static int getOSInfo(void)
{
OSVERSIONINFO osVerInfo; /* Information about the OS */
osVerInfo.dwOSVersionInfoSize = sizeof(osVerInfo);
BAIL_IF_MACRO(!GetVersionEx(&osVerInfo), winApiStrError(), 0);
osHasUnicode = (osVerInfo.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS);
return(1);
} /* getOSInfo */


int __PHYSFS_platformInit(void)
{
BAIL_IF_MACRO(!getOSInfo(), NULL, 0);
BAIL_IF_MACRO(!findApiSymbols(), NULL, 0);
BAIL_IF_MACRO(!determineUserDir(), NULL, 0);
return(1); /* It's all good */

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