Hi,
On Tue, Apr 12, 2011 at 08:06:19AM +0200, Anders Broman wrote:
> The problem is that inflatePrime is missing from zlib.def, we should
> probably build with zlib 1.2.5
Or test if we have inflatePrime in zlib,
patch for configure.in, don't know how to the same for Windows.
diff --git configure.in configure.in
index 1da5ce6..0dbcc03 100644
--- configure.in
+++ configure.in
@@ -1199,9 +1199,9 @@ else
fi
if test "x$want_zlib" != "xno" ; then
- AC_CHECK_LIB(z, gzclearerr,
+ AC_CHECK_LIB(z, inflatePrime,
[
- AC_DEFINE(HAVE_GZCLEARERR, 1, [Define if we have gzclearerr])
+ AC_DEFINE(HAVE_INFLATEPRIME, 1, [Define if we have
inflatePrime])
])
fi
diff --git wiretap/file_wrappers.c wiretap/file_wrappers.c
index 633204a..b319192 100644
--- wiretap/file_wrappers.c
+++ wiretap/file_wrappers.c
@@ -155,7 +155,9 @@ struct fast_seek_point {
int compression;
union {
struct {
+#ifdef HAVE_INFLATEPRIME
int bits; /* number of bits (1-7) from
byte at in - 1, or 0 */
+#endif
unsigned char window[ZLIB_WINSIZE]; /* preceding
32K of uncompressed data */
/* be gentle with Z_STREAM_END, 8 bytes more... Another
solution would be to comment checks out */
@@ -260,6 +262,11 @@ zlib_fast_seek_add(FILE_T file, struct zlib_cur_seek_point
*point, int bits, gin
/* it's for sure after gzip header, so file->fast_seek->len != 0 */
struct fast_seek_point *item =
file->fast_seek->pdata[file->fast_seek->len - 1];;
+#ifndef HAVE_INFLATEPRIME
+ if (bits)
+ return;
+#endif
+
/* Glib has got Balanced Binary Trees (GTree) but I couldn't find a way
to do quick search for nearest (and smaller) value to seek (It's what
fast_seek_find() do)
* Inserting value in middle of sorted array is expensive, so we
want to add only in the end.
* It's not big deal, cause first-read don't usually invoke seeking
@@ -269,8 +276,9 @@ zlib_fast_seek_add(FILE_T file, struct zlib_cur_seek_point
*point, int bits, gin
val->in = in_pos;
val->out = out_pos;
val->compression = ZLIB;
-
+#ifdef HAVE_INFLATEPRIME
val->data.zlib.bits = bits;
+#endif
if (point->pos != 0) {
unsigned int left = ZLIB_WINSIZE - point->pos;
@@ -688,7 +696,11 @@ file_seek(FILE_T file, gint64 offset, int whence, int *err)
#ifdef HAVE_LIBZ
if (here->compression == ZLIB) {
+#ifdef HAVE_INFLATEPRIME
off = here->in - (here->data.zlib.bits ? 1 : 0);
+#else
+ off = here->in;
+#endif
off2 = here->out;
} else if (here->compression == GZIP_AFTER_HEADER) {
off = here->in;
@@ -716,21 +728,22 @@ file_seek(FILE_T file, gint64 offset, int whence, int
*err)
#ifdef HAVE_LIBZ
if (here->compression == ZLIB) {
z_stream *strm = &file->strm;
- FILE_T state = file;
inflateReset(strm);
strm->adler = here->data.zlib.adler;
strm->total_out = here->data.zlib.total_out;
+#ifdef HAVE_INFLATEPRIME
if (here->data.zlib.bits) {
+ FILE_T state = file;
int ret = NEXT();
if (ret == -1) {
/* *err = ???; */
return -1;
}
-
(void)inflatePrime(strm, here->data.zlib.bits,
ret >> (8 - here->data.zlib.bits));
}
+#endif
(void)inflateSetDictionary(strm,
here->data.zlib.window, ZLIB_WINSIZE);
file->compression = ZLIB;
} else if (here->compression == GZIP_AFTER_HEADER) {
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