First step of implementation of WL#1518 "make bundled zlib

  usable for unix builds": zlib 1.2.1 imported


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BitKeeper/deleted/.del-Makefile.riscos~f85c6493d3e51733:
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BitKeeper/deleted/.del-zlib.mak~70f7c5f6947fd807:
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BitKeeper/deleted/.del-d_zlib.bpr~cefb1beee520d6e8:
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BitKeeper/deleted/.del-d_zlib.cpp~62dff1931881afa6:
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BitKeeper/deleted/.del-zlib.bpr~fe8bf5d1c4a2ce5a:
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BitKeeper/deleted/.del-zlib32.bpr~c2a9f0aa47a1d9ad:
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BitKeeper/deleted/.del-test.cpp~4480297b204dc360:
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BitKeeper/deleted/.del-zfstream.cpp~943ecbd558e86dde:
  Delete: zlib/contrib/iostream/zfstream.cpp
BitKeeper/deleted/.del-zlib32.cpp~bbb4a200d2fe6497:
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BitKeeper/deleted/.del-ChangeLogUnzip~a3ae0ba899cadd:
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BitKeeper/deleted/.del-zfstream.h~71ee057bdc6366ac:
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BitKeeper/deleted/.del-zstream_test.cpp~e471b51e7fb553ec:
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BitKeeper/deleted/.del-miniunz.c~9da181975b3a48:
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BitKeeper/deleted/.del-makefile.w32~6507530fa1b017c:
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  Delete: zlib/infblock.c
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  Delete: zlib/infutil.c
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BitKeeper/deleted/.del-infcodes.h~c9f64a612c2cc56a:
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BitKeeper/deleted/.del-infcodes.c~7ed73df8a54d6d55:
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BitKeeper/deleted/.del-maketree.c~846b8b96ac6872d8:
  Delete: zlib/maketree.c
VC++Files/zlib/zlib.dsp:
  Modified to suit zlib upgrade.
mysys/my_crc32.c:
  Modified to suit zlib upgrade.
zlib/ChangeLog:
  zlib 1.2.1 imported
zlib/FAQ:
  zlib 1.2.1 imported
zlib/INDEX:
  zlib 1.2.1 imported
zlib/README:
  zlib 1.2.1 imported
zlib/adler32.c:
  zlib 1.2.1 imported
zlib/algorithm.txt:
  zlib 1.2.1 imported
zlib/compress.c:
  zlib 1.2.1 imported
zlib/crc32.c:
  zlib 1.2.1 imported
zlib/deflate.c:
  zlib 1.2.1 imported
zlib/deflate.h:
  zlib 1.2.1 imported
zlib/gzio.c:
  zlib 1.2.1 imported
zlib/inffast.c:
  zlib 1.2.1 imported
zlib/inffast.h:
  zlib 1.2.1 imported
zlib/inffixed.h:
  zlib 1.2.1 imported
zlib/inflate.c:
  zlib 1.2.1 imported
zlib/inftrees.c:
  zlib 1.2.1 imported
zlib/inftrees.h:
  zlib 1.2.1 imported
zlib/trees.c:
  zlib 1.2.1 imported
zlib/uncompr.c:
  zlib 1.2.1 imported
zlib/zconf.h:
  zlib 1.2.1 imported
zlib/zlib.3:
  zlib 1.2.1 imported
zlib/zlib.h:
  zlib 1.2.1 imported
zlib/zutil.c:
  zlib 1.2.1 imported
zlib/zutil.h:
  zlib 1.2.1 imported

1 files changed, 44 insertions, 47 deletions

diff --git a/zlib/inftrees.h b/zlib/inftrees.h
index 04b73b7296a..82d365a7e90 100644
--- a/zlib/inftrees.h
+++ b/zlib/inftrees.h
@@ -1,6 +1,6 @@
 /* inftrees.h -- header to use inftrees.c
- * Copyright (C) 1995-2002 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h 
+ * Copyright (C) 1995-2003 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 /* WARNING: this file should *not* be used by applications. It is
@@ -8,51 +8,48 @@
    subject to change. Applications should only use zlib.h.
  */
 
-/* Huffman code lookup table entry--this entry is four bytes for machines
-   that have 16-bit pointers (e.g. PC's in the small or medium model). */
-
-typedef struct inflate_huft_s FAR inflate_huft;
-
-struct inflate_huft_s {
-  union {
-    struct {
-      Byte Exop;        /* number of extra bits or operation */
-      Byte Bits;        /* number of bits in this code or subcode */
-    } what;
-    uInt pad;           /* pad structure to a power of 2 (4 bytes for */
-  } word;               /*  16-bit, 8 bytes for 32-bit int's) */
-  uInt base;            /* literal, length base, distance base,
-                           or table offset */
-};
+/* Structure for decoding tables.  Each entry provides either the
+   information needed to do the operation requested by the code that
+   indexed that table entry, or it provides a pointer to another
+   table that indexes more bits of the code.  op indicates whether
+   the entry is a pointer to another table, a literal, a length or
+   distance, an end-of-block, or an invalid code.  For a table
+   pointer, the low four bits of op is the number of index bits of
+   that table.  For a length or distance, the low four bits of op
+   is the number of extra bits to get after the code.  bits is
+   the number of bits in this code or part of the code to drop off
+   of the bit buffer.  val is the actual byte to output in the case
+   of a literal, the base length or distance, or the offset from
+   the current table to the next table.  Each entry is four bytes. */
+typedef struct {
+    unsigned char op;           /* operation, extra bits, table bits */
+    unsigned char bits;         /* bits in this part of the code */
+    unsigned short val;         /* offset in table or code value */
+} code;
+
+/* op values as set by inflate_table():
+    00000000 - literal
+    0000tttt - table link, tttt != 0 is the number of table index bits
+    0001eeee - length or distance, eeee is the number of extra bits
+    01100000 - end of block
+    01000000 - invalid code
+ */
 
 /* Maximum size of dynamic tree.  The maximum found in a long but non-
-   exhaustive search was 1004 huft structures (850 for length/literals
+   exhaustive search was 1004 code structures (850 for length/literals
    and 154 for distances, the latter actually the result of an
-   exhaustive search).  The actual maximum is not known, but the
-   value below is more than safe. */
-#define MANY 1440
-
-extern int inflate_trees_bits OF((
-    uIntf *,                    /* 19 code lengths */
-    uIntf *,                    /* bits tree desired/actual depth */
-    inflate_huft * FAR *,       /* bits tree result */
-    inflate_huft *,             /* space for trees */
-    z_streamp));                /* for messages */
-
-extern int inflate_trees_dynamic OF((
-    uInt,                       /* number of literal/length codes */
-    uInt,                       /* number of distance codes */
-    uIntf *,                    /* that many (total) code lengths */
-    uIntf *,                    /* literal desired/actual bit depth */
-    uIntf *,                    /* distance desired/actual bit depth */
-    inflate_huft * FAR *,       /* literal/length tree result */
-    inflate_huft * FAR *,       /* distance tree result */
-    inflate_huft *,             /* space for trees */
-    z_streamp));                /* for messages */
-
-extern int inflate_trees_fixed OF((
-    uIntf *,                    /* literal desired/actual bit depth */
-    uIntf *,                    /* distance desired/actual bit depth */
-    inflate_huft * FAR *,       /* literal/length tree result */
-    inflate_huft * FAR *,       /* distance tree result */
-    z_streamp));                /* for memory allocation */
+   exhaustive search).  The true maximum is not known, but the value
+   below is more than safe. */
+#define ENOUGH 1440
+#define MAXD 154
+
+/* Type of code to build for inftable() */
+typedef enum {
+    CODES,
+    LENS,
+    DISTS
+} codetype;
+
+extern int inflate_table OF((codetype type, unsigned short FAR *lens,
+                             unsigned codes, code FAR * FAR *table,
+                             unsigned FAR *bits, unsigned short FAR *work));