ntdll: Add _wsplitpath_s.

dlls/ntdll/ntdll.spec

@@ -1554,6 +1554,7 @@
 @ cdecl -ret64 _wcstoui64(wstr ptr long)
 @ cdecl _wcsupr(wstr)
 @ cdecl _wcsupr_s(wstr long)
+@ cdecl _wsplitpath_s(wstr ptr long ptr long ptr long ptr long)
 @ cdecl _wtoi(wstr)
 @ cdecl -ret64 _wtoi64(wstr)
 @ cdecl _wtol(wstr)

dlls/ntdll/wcstring.c

@@ -1299,3 +1299,79 @@ LONGLONG  __cdecl _wtoi64( LPCWSTR str )
 
     return bMinus ? -RunningTotal : RunningTotal;
 }
+
+
+/******************************************************************
+ *      _wsplitpath_s   (NTDLL.@)
+ */
+errno_t __cdecl _wsplitpath_s( const wchar_t *inpath, wchar_t *drive, size_t sz_drive,
+                               wchar_t *dir, size_t sz_dir, wchar_t *fname, size_t sz_fname,
+                               wchar_t *ext, size_t sz_ext )
+{
+    const wchar_t *p, *end;
+
+    if (!inpath || (!drive && sz_drive) ||
+        (drive && !sz_drive) ||
+        (!dir && sz_dir) ||
+        (dir && !sz_dir) ||
+        (!fname && sz_fname) ||
+        (fname && !sz_fname) ||
+        (!ext && sz_ext) ||
+        (ext && !sz_ext))
+        return EINVAL;
+
+    if (inpath[0] && inpath[1] == ':')
+    {
+        if (drive)
+        {
+            if (sz_drive <= 2) goto error;
+            drive[0] = inpath[0];
+            drive[1] = inpath[1];
+            drive[2] = 0;
+        }
+        inpath += 2;
+    }
+    else if (drive) drive[0] = '\0';
+
+    /* look for end of directory part */
+    end = NULL;
+    for (p = inpath; *p; p++) if (*p == '/' || *p == '\\') end = p + 1;
+
+    if (end)  /* got a directory */
+    {
+        if (dir)
+        {
+            if (sz_dir <= end - inpath) goto error;
+            memcpy( dir, inpath, (end - inpath) * sizeof(wchar_t) );
+            dir[end - inpath] = 0;
+        }
+        inpath = end;
+    }
+    else if (dir) dir[0] = 0;
+
+    /* look for extension: what's after the last dot */
+    end = NULL;
+    for (p = inpath; *p; p++) if (*p == '.') end = p;
+
+    if (!end) end = p; /* there's no extension */
+
+    if (fname)
+    {
+        if (sz_fname <= end - inpath) goto error;
+        memcpy( fname, inpath, (end - inpath) * sizeof(wchar_t) );
+        fname[end - inpath] = 0;
+    }
+    if (ext)
+    {
+        if (sz_ext <= wcslen(end)) goto error;
+        wcscpy( ext, end );
+    }
+    return 0;
+
+error:
+    if (drive) drive[0] = 0;
+    if (dir) dir[0] = 0;
+    if (fname) fname[0]= 0;
+    if (ext) ext[0]= 0;
+    return ERANGE;
+}