Merging upstream version 1.3~rc1.

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 36 insertions, 35 deletions

diff --git a/decoder.c b/decoder.c
index 25f7c73..55259be 100644
--- a/decoder.c
+++ b/decoder.c
@@ -25,7 +25,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "lunzip.h"
+#include "lzip.h"
 #include "decoder.h"
 
 
@@ -124,10 +124,10 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
   File_trailer trailer;
   const int trailer_size = Ft_versioned_size( decoder->member_version );
   const unsigned long long member_size =
-    Rd_member_position( decoder->range_decoder ) + trailer_size;
+    Rd_member_position( decoder->rdec ) + trailer_size;
   bool error = false;
 
-  int size = Rd_read_data( decoder->range_decoder, trailer, trailer_size );
+  int size = Rd_read_data( decoder->rdec, trailer, trailer_size );
   if( size < trailer_size )
     {
     error = true;
@@ -139,8 +139,10 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
       }
     while( size < trailer_size ) trailer[size++] = 0;
     }
+
   if( decoder->member_version == 0 ) Ft_set_member_size( trailer, member_size );
-  if( decoder->range_decoder->code != 0 )
+
+  if( decoder->rdec->code != 0 )
     {
     error = true;
     Pp_show_msg( pp, "Range decoder final code is not zero" );
@@ -175,7 +177,7 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
                Ft_get_member_size( trailer ), member_size, member_size );
       }
     }
-  if( !error && pp->verbosity >= 3 && LZd_data_position( decoder ) > 0 && member_size > 0 )
+  if( !error && pp->verbosity >= 2 && LZd_data_position( decoder ) > 0 && member_size > 0 )
     fprintf( stderr, "%6.3f:1, %6.3f bits/byte, %5.2f%% saved.  ",
              (double)LZd_data_position( decoder ) / member_size,
              ( 8.0 * member_size ) / LZd_data_position( decoder ),
@@ -193,88 +195,87 @@ bool LZd_verify_trailer( struct LZ_decoder * const decoder,
 int LZd_decode_member( struct LZ_decoder * const decoder,
                        struct Pretty_print * const pp )
   {
+  struct Range_decoder * const rdec = decoder->rdec;
   unsigned rep0 = 0;		/* rep[0-3] latest four distances */
   unsigned rep1 = 0;		/* used for efficient coding of */
   unsigned rep2 = 0;		/* repeated distances */
   unsigned rep3 = 0;
-
   State state = 0;
-  Rd_load( decoder->range_decoder );
 
-  while( !Rd_finished( decoder->range_decoder ) )
+  Rd_load( rdec );
+  while( !Rd_finished( rdec ) )
     {
     const int pos_state = LZd_data_position( decoder ) & pos_state_mask;
-    if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_match[state][pos_state] ) == 0 )
+    if( Rd_decode_bit( rdec, &decoder->bm_match[state][pos_state] ) == 0 )	/* 1st bit */
       {
       const uint8_t prev_byte = LZd_get_prev_byte( decoder );
       if( St_is_char( state ) )
         {
         state -= ( state < 4 ) ? state : 3;
-        LZd_put_byte( decoder, Rd_decode_tree( decoder->range_decoder,
+        LZd_put_byte( decoder, Rd_decode_tree( rdec,
                       decoder->bm_literal[get_lit_state(prev_byte)], 8 ) );
         }
       else
         {
         state -= ( state < 10 ) ? 3 : 6;
-        LZd_put_byte( decoder, Rd_decode_matched( decoder->range_decoder,
-          decoder->bm_literal[get_lit_state(prev_byte)], LZd_get_byte( decoder, rep0 ) ) );
+        LZd_put_byte( decoder, Rd_decode_matched( rdec,
+                      decoder->bm_literal[get_lit_state(prev_byte)],
+                      LZd_get_byte( decoder, rep0 ) ) );
         }
       }
     else
       {
       int len;
-      if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep[state] ) == 1 )
+      if( Rd_decode_bit( rdec, &decoder->bm_rep[state] ) == 1 )	/* 2nd bit */
         {
-        len = 0;
-        if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep0[state] ) == 1 )
+        if( Rd_decode_bit( rdec, &decoder->bm_rep0[state] ) == 0 )	/* 3rd bit */
+          {
+          if( Rd_decode_bit( rdec, &decoder->bm_len[state][pos_state] ) == 0 )	/* 4th bit */
+            { state = St_set_short_rep( state );
+              LZd_put_byte( decoder, LZd_get_byte( decoder, rep0 ) ); continue; }
+          }
+        else
           {
           unsigned distance;
-          if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep1[state] ) == 0 )
+          if( Rd_decode_bit( rdec, &decoder->bm_rep1[state] ) == 0 )	/* 4th bit */
             distance = rep1;
           else
             {
-            if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_rep2[state] ) == 0 )
+            if( Rd_decode_bit( rdec, &decoder->bm_rep2[state] ) == 0 )	/* 5th bit */
               distance = rep2;
-            else { distance = rep3; rep3 = rep2; }
+            else
+              { distance = rep3; rep3 = rep2; }
             rep2 = rep1;
             }
           rep1 = rep0;
           rep0 = distance;
           }
-        else
-          {
-          if( Rd_decode_bit( decoder->range_decoder, &decoder->bm_len[state][pos_state] ) == 0 )
-            { state = St_set_short_rep( state ); len = 1; }
-          }
-        if( len == 0 )
-          {
-          state = St_set_rep( state );
-          len = min_match_len + Led_decode( &decoder->rep_match_len_decoder, decoder->range_decoder, pos_state );
-          }
+        state = St_set_rep( state );
+        len = min_match_len + Rd_decode_len( rdec, &decoder->rep_len_model, pos_state );
         }
       else
         {
         int dis_slot;
         const unsigned rep0_saved = rep0;
-        len = min_match_len + Led_decode( &decoder->len_decoder, decoder->range_decoder, pos_state );
-        dis_slot = Rd_decode_tree6( decoder->range_decoder, decoder->bm_dis_slot[get_dis_state(len)] );
+        len = min_match_len + Rd_decode_len( rdec, &decoder->match_len_model, pos_state );
+        dis_slot = Rd_decode_tree6( rdec, decoder->bm_dis_slot[get_dis_state(len)] );
         if( dis_slot < start_dis_model ) rep0 = dis_slot;
         else
           {
           const int direct_bits = ( dis_slot >> 1 ) - 1;
           rep0 = ( 2 | ( dis_slot & 1 ) ) << direct_bits;
           if( dis_slot < end_dis_model )
-            rep0 += Rd_decode_tree_reversed( decoder->range_decoder,
+            rep0 += Rd_decode_tree_reversed( rdec,
                                              decoder->bm_dis + rep0 - dis_slot - 1,
                                              direct_bits );
           else
             {
-            rep0 += Rd_decode( decoder->range_decoder, direct_bits - dis_align_bits ) << dis_align_bits;
-            rep0 += Rd_decode_tree_reversed4( decoder->range_decoder, decoder->bm_align );
+            rep0 += Rd_decode( rdec, direct_bits - dis_align_bits ) << dis_align_bits;
+            rep0 += Rd_decode_tree_reversed4( rdec, decoder->bm_align );
             if( rep0 == 0xFFFFFFFFU )		/* Marker found */
               {
               rep0 = rep0_saved;
-              Rd_normalize( decoder->range_decoder );
+              Rd_normalize( rdec );
               LZd_flush_data( decoder );
               if( len == min_match_len )	/* End Of Stream marker */
                 {
@@ -282,7 +283,7 @@ int LZd_decode_member( struct LZ_decoder * const decoder,
                 }
               if( len == min_match_len + 1 )	/* Sync Flush marker */
                 {
-                Rd_load( decoder->range_decoder ); continue;
+                Rd_load( rdec ); continue;
                 }
               if( pp->verbosity >= 0 )
                 {