summaryrefslogtreecommitdiffstats
path: root/decoder.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--decoder.h38
1 files changed, 18 insertions, 20 deletions
diff --git a/decoder.h b/decoder.h
index ad3ff7c..d583c65 100644
--- a/decoder.h
+++ b/decoder.h
@@ -29,8 +29,8 @@ class Range_decoder
bool read_block();
- Range_decoder( const Range_decoder & );
- void operator=( const Range_decoder & );
+ Range_decoder( const Range_decoder & ); // declared as private
+ void operator=( const Range_decoder & ); // declared as private
public:
explicit Range_decoder( const int ifd )
@@ -42,16 +42,15 @@ public:
code( 0 ),
range( 0xFFFFFFFFU ),
infd( ifd ),
- at_stream_end( false ) {}
+ at_stream_end( false )
+ {}
~Range_decoder() { delete[] buffer; }
- bool code_is_zero() const throw() { return ( code == 0 ); }
+ bool code_is_zero() const { return ( code == 0 ); }
bool finished() { return pos >= stream_pos && !read_block(); }
- long long member_position() const throw()
- { return partial_member_pos + pos; }
- void reset_member_position() throw()
- { partial_member_pos = -pos; }
+ long long member_position() const { return partial_member_pos + pos; }
+ void reset_member_position() { partial_member_pos = -pos; }
uint8_t get_byte()
{
@@ -59,7 +58,7 @@ public:
return buffer[pos++];
}
- int read( uint8_t * const outbuf, const int size )
+ int read_data( uint8_t * const outbuf, const int size )
{
int rest = size;
while( rest > 0 && !finished() )
@@ -192,7 +191,7 @@ class Literal_decoder
{
Bit_model bm_literal[1<<literal_context_bits][0x300];
- int lstate( const int prev_byte ) const throw()
+ int lstate( const uint8_t prev_byte ) const
{ return ( prev_byte >> ( 8 - literal_context_bits ) ); }
public:
@@ -209,6 +208,7 @@ public:
class LZ_decoder
{
long long partial_data_pos;
+ Range_decoder & range_decoder;
const int dictionary_size;
const int buffer_size;
uint8_t * const buffer; // output buffer
@@ -217,18 +217,17 @@ class LZ_decoder
uint32_t crc_;
const int outfd; // output file descriptor
const int member_version;
- Range_decoder & range_decoder;
void flush_data();
bool verify_trailer( const Pretty_print & pp ) const;
- uint8_t get_prev_byte() const throw()
+ uint8_t get_prev_byte() const
{
const int i = ( ( pos > 0 ) ? pos : buffer_size ) - 1;
return buffer[i];
}
- uint8_t get_byte( const int distance ) const throw()
+ uint8_t get_byte( const int distance ) const
{
int i = pos - distance - 1;
if( i < 0 ) i += buffer_size;
@@ -258,13 +257,14 @@ class LZ_decoder
}
}
- LZ_decoder( const LZ_decoder & );
- void operator=( const LZ_decoder & );
+ LZ_decoder( const LZ_decoder & ); // declared as private
+ void operator=( const LZ_decoder & ); // declared as private
public:
LZ_decoder( const File_header & header, Range_decoder & rdec, const int ofd )
:
partial_data_pos( 0 ),
+ range_decoder( rdec ),
dictionary_size( header.dictionary_size() ),
buffer_size( std::max( 65536, dictionary_size ) ),
buffer( new uint8_t[buffer_size] ),
@@ -272,16 +272,14 @@ public:
stream_pos( 0 ),
crc_( 0xFFFFFFFFU ),
outfd( ofd ),
- member_version( header.version() ),
- range_decoder( rdec )
+ member_version( header.version() )
{ buffer[buffer_size-1] = 0; } // prev_byte of first_byte
~LZ_decoder() { delete[] buffer; }
- uint32_t crc() const throw() { return crc_ ^ 0xFFFFFFFFU; }
+ uint32_t crc() const { return crc_ ^ 0xFFFFFFFFU; }
- long long data_position() const throw()
- { return partial_data_pos + pos; }
+ long long data_position() const { return partial_data_pos + pos; }
int decode_member( const Pretty_print & pp );
};