X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/da95e2399e068eb87ea90a4617d80980d0601eb4..f418e991c052a1f9c4ad5b877a47de524c24a892:/src/decompress.c

diff --git a/src/decompress.c b/src/decompress.c
index 24ce852245..b14f0a2cd7 100644
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -1,5 +1,5 @@
 /* Interface to zlib.
-   Copyright (C) 2013-2014 Free Software Foundation, Inc.
+   Copyright (C) 2013-2015 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -28,29 +28,15 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <verify.h>
 
-static Lisp_Object Qzlib_dll;
-
 #ifdef WINDOWSNT
-#include <windows.h>
-#include "w32.h"
-
-/* Macro for defining functions that will be loaded from the zlib DLL.  */
-#define DEF_ZLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args
-
-/* Macro for loading zlib functions from the library.  */
-#define LOAD_ZLIB_FN(lib,func) {					\
-    fn_##func = (void *) GetProcAddress (lib, #func);			\
-    if (!fn_##func) return false;					\
-  }
+# include <windows.h>
+# include "w32.h"
 
-DEF_ZLIB_FN (int, inflateInit2_,
-	     (z_streamp strm, int  windowBits, const char *version, int stream_size));
-
-DEF_ZLIB_FN (int, inflate,
-	     (z_streamp strm, int flush));
-
-DEF_ZLIB_FN (int, inflateEnd,
-	     (z_streamp strm));
+DEF_DLL_FN (int, inflateInit2_,
+	    (z_streamp strm, int windowBits, const char *version,
+	     int stream_size));
+DEF_DLL_FN (int, inflate, (z_streamp strm, int flush));
+DEF_DLL_FN (int, inflateEnd, (z_streamp strm));
 
 static bool zlib_initialized;
 
@@ -62,20 +48,19 @@ init_zlib_functions (void)
   if (!library)
     return false;
 
-  LOAD_ZLIB_FN (library, inflateInit2_);
-  LOAD_ZLIB_FN (library, inflate);
-  LOAD_ZLIB_FN (library, inflateEnd);
+  LOAD_DLL_FN (library, inflateInit2_);
+  LOAD_DLL_FN (library, inflate);
+  LOAD_DLL_FN (library, inflateEnd);
   return true;
 }
 
-#define fn_inflateInit2(strm, windowBits) \
-        fn_inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
-
-#else /* !WINDOWSNT */
+# undef inflate
+# undef inflateEnd
+# undef inflateInit2_
 
-#define fn_inflateInit2		inflateInit2
-#define fn_inflate		inflate
-#define fn_inflateEnd		inflateEnd
+# define inflate fn_inflate
+# define inflateEnd fn_inflateEnd
+# define inflateInit2_ fn_inflateInit2_
 
 #endif	/* WINDOWSNT */
 
@@ -90,7 +75,7 @@ static void
 unwind_decompress (void *ddata)
 {
   struct decompress_unwind_data *data = ddata;
-  fn_inflateEnd (data->stream);
+  inflateEnd (data->stream);
 
   /* Delete any uncompressed data already inserted on error.  */
   if (data->start)
@@ -167,7 +152,7 @@ This function can be called only in unibyte buffers.  */)
 
   /* The magic number 32 apparently means "autodetect both the gzip and
      zlib formats" according to zlib.h.  */
-  if (fn_inflateInit2 (&stream, MAX_WBITS + 32) != Z_OK)
+  if (inflateInit2 (&stream, MAX_WBITS + 32) != Z_OK)
     return Qnil;
 
   unwind_data.start = iend;
@@ -197,7 +182,7 @@ This function can be called only in unibyte buffers.  */)
       stream.avail_in = avail_in;
       stream.next_out = GPT_ADDR;
       stream.avail_out = avail_out;
-      inflate_status = fn_inflate (&stream, Z_NO_FLUSH);
+      inflate_status = inflate (&stream, Z_NO_FLUSH);
       pos_byte += avail_in - stream.avail_in;
       decompressed = avail_out - stream.avail_out;
       insert_from_gap (decompressed, decompressed, 0);