From 2f1db1facab89cd2eda64441f9b730a3831f5746 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <mail@daniel-baumann.ch>
Date: Sat, 7 Nov 2015 08:23:45 +0100
Subject: Merging upstream version 1.6~pre3.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
---
 decoder.cc | 33 +++++++++++++++++++++------------
 1 file changed, 21 insertions(+), 12 deletions(-)

(limited to 'decoder.cc')

diff --git a/decoder.cc b/decoder.cc
index aeac2cd..0cb6188 100644
--- a/decoder.cc
+++ b/decoder.cc
@@ -17,6 +17,7 @@
 
 #define _FILE_OFFSET_BITS 64
 
+#include <algorithm>
 #include <cerrno>
 #include <cstdio>
 #include <cstdlib>
@@ -45,16 +46,15 @@ bool Input_buffer::read_block()
 
 void LZ_decoder::flush_data()
   {
-  if( !member_finished )
+  const int size = pos - stream_pos;
+  if( size > 0 )
     {
-    crc32.update( crc_, buffer, pos );
-    if( odes_ >= 0 )
-      {
-      const int wr = writeblock( odes_, (char *)buffer, pos );
-      if( wr != pos ) throw Error( "write error" );
-      }
+    crc32.update( crc_, buffer + stream_pos, size );
+    if( odes_ >= 0 &&
+        writeblock( odes_, (char *)buffer + stream_pos, size ) != size )
+      throw Error( "write error" );
     if( pos >= buffer_size ) { partial_data_pos += pos; pos = 0; }
-    else member_finished = true;
+    stream_pos = pos;
     }
   }
 
@@ -180,9 +180,8 @@ int LZ_decoder::decode_member( const Pretty_print & pp )
         }
       else
         {
-        rep3 = rep2; rep2 = rep1; rep1 = rep0;
+        unsigned int rep0_saved = rep0;
         len = min_match_len + len_decoder.decode( range_decoder, pos_state );
-        state.set_match();
         const int dis_slot = range_decoder.decode_tree( bm_dis_slot[get_dis_state(len)], dis_slot_bits );
         if( dis_slot < start_dis_model ) rep0 = dis_slot;
         else
@@ -197,10 +196,17 @@ int LZ_decoder::decode_member( const Pretty_print & pp )
             rep0 += range_decoder.decode_tree_reversed( bm_align, dis_align_bits );
             if( rep0 == 0xFFFFFFFF )		// Marker found
               {
+              rep0 = rep0_saved;
               range_decoder.normalize();
               flush_data();
               if( len == min_match_len )	// End Of Stream marker
-                { if( verify_trailer( pp ) ) return 0; else return 3; }
+                {
+                if( verify_trailer( pp ) ) return 0; else return 3;
+                }
+              if( len == min_match_len + 1 )	// Sync Flush marker
+                {
+                range_decoder.reload(); continue;
+                }
               if( verbosity >= 0 )
                 {
                 pp();
@@ -208,9 +214,12 @@ int LZ_decoder::decode_member( const Pretty_print & pp )
                 }
               return 4;
               }
-            if( rep0 >= (unsigned int)buffer_size ) { flush_data(); return 1; }
+            if( rep0 >= (unsigned int)dictionary_size )
+              { flush_data(); return 1; }
             }
           }
+        rep3 = rep2; rep2 = rep1; rep1 = rep0_saved;
+        state.set_match();
         }
       copy_block( rep0, len );
       prev_byte = get_byte( 0 );
-- 
cgit v1.2.3