From 965fe72aed580d518c979c9a33b49e7df28205f7 Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Fri, 9 Sep 2011 23:19:55 -0700
Subject: zlib 1.1.0

---
 trees.c | 31 ++++++++++++-------------------
 1 file changed, 12 insertions(+), 19 deletions(-)

(limited to 'trees.c')

diff --git a/trees.c b/trees.c
index e2c230f..e09e94c 100644
--- a/trees.c
+++ b/trees.c
@@ -99,13 +99,13 @@ local ct_data static_dtree[D_CODES];
  * 5 bits.)
  */
 
-local uch dist_code[DIST_CODE_LEN];
+uch _dist_code[DIST_CODE_LEN];
 /* Distance codes. The first 256 values correspond to the distances
  * 3 .. 258, the last 256 values correspond to the top 8 bits of
  * the 15 bit distances.
  */
 
-local uch length_code[MAX_MATCH-MIN_MATCH+1];
+uch _length_code[MAX_MATCH-MIN_MATCH+1];
 /* length code for each normalized match length (0 == MIN_MATCH) */
 
 local int base_length[LENGTH_CODES];
@@ -173,13 +173,6 @@ local void gen_trees_header OF((void));
        send_bits(s, tree[c].Code, tree[c].Len); }
 #endif
 
-#define d_code(dist) \
-   ((dist) < 256 ? dist_code[dist] : dist_code[256+((dist)>>7)])
-/* Mapping from a distance to a distance code. dist is the distance - 1 and
- * must not have side effects. dist_code[256] and dist_code[257] are never
- * used.
- */
-
 /* ===========================================================================
  * Output a short LSB first on the stream.
  * IN assertion: there is enough room in pendingBuf.
@@ -262,7 +255,7 @@ local void tr_static_init()
     for (code = 0; code < LENGTH_CODES-1; code++) {
         base_length[code] = length;
         for (n = 0; n < (1<<extra_lbits[code]); n++) {
-            length_code[length++] = (uch)code;
+            _length_code[length++] = (uch)code;
         }
     }
     Assert (length == 256, "tr_static_init: length != 256");
@@ -270,14 +263,14 @@ local void tr_static_init()
      * in two different ways: code 284 + 5 bits or code 285, so we
      * overwrite length_code[255] to use the best encoding:
      */
-    length_code[length-1] = (uch)code;
+    _length_code[length-1] = (uch)code;
 
     /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
     dist = 0;
     for (code = 0 ; code < 16; code++) {
         base_dist[code] = dist;
         for (n = 0; n < (1<<extra_dbits[code]); n++) {
-            dist_code[dist++] = (uch)code;
+            _dist_code[dist++] = (uch)code;
         }
     }
     Assert (dist == 256, "tr_static_init: dist != 256");
@@ -285,7 +278,7 @@ local void tr_static_init()
     for ( ; code < D_CODES; code++) {
         base_dist[code] = dist << 7;
         for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
-            dist_code[256 + dist++] = (uch)code;
+            _dist_code[256 + dist++] = (uch)code;
         }
     }
     Assert (dist == 256, "tr_static_init: 256+dist != 512");
@@ -349,15 +342,15 @@ void gen_trees_header()
 		static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
     }
 
-    fprintf(header, "local const uch dist_code[DIST_CODE_LEN] = {\n");
+    fprintf(header, "const uch _dist_code[DIST_CODE_LEN] = {\n");
     for (i = 0; i < DIST_CODE_LEN; i++) {
-	fprintf(header, "%2u%s", dist_code[i],
+	fprintf(header, "%2u%s", _dist_code[i],
 		SEPARATOR(i, DIST_CODE_LEN-1, 20));
     }
 
-    fprintf(header, "local const uch length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
+    fprintf(header, "const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
     for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
-	fprintf(header, "%2u%s", length_code[i],
+	fprintf(header, "%2u%s", _length_code[i],
 		SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
     }
 
@@ -1045,7 +1038,7 @@ int _tr_tally (s, dist, lc)
                (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
                (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
 
-        s->dyn_ltree[length_code[lc]+LITERALS+1].Freq++;
+        s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
         s->dyn_dtree[d_code(dist)].Freq++;
     }
 
@@ -1094,7 +1087,7 @@ local void compress_block(s, ltree, dtree)
             Tracecv(isgraph(lc), (stderr," '%c' ", lc));
         } else {
             /* Here, lc is the match length - MIN_MATCH */
-            code = length_code[lc];
+            code = _length_code[lc];
             send_code(s, code+LITERALS+1, ltree); /* send the length code */
             extra = extra_lbits[code];
             if (extra != 0) {
-- 
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