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-rw-r--r--lzcheck.cc230
1 files changed, 0 insertions, 230 deletions
diff --git a/lzcheck.cc b/lzcheck.cc
deleted file mode 100644
index ce53a41..0000000
--- a/lzcheck.cc
+++ /dev/null
@@ -1,230 +0,0 @@
-/* Lzcheck - A test program for the lzlib library
- Copyright (C) 2009, 2010, 2011 Antonio Diaz Diaz.
-
- This program is free software: you have unlimited permission
- to copy, distribute and modify it.
-
- Usage is:
- lzcheck filename.txt
-
- This program reads the specified text file and then compresses it,
- line by line, to test the flushing mechanism and the member
- restart/reset/sync functions.
-*/
-
-#define _FILE_OFFSET_BITS 64
-
-#include <algorithm>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <stdint.h>
-#include <unistd.h>
-
-#include "lzlib.h"
-
-#ifndef LLONG_MAX
-#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
-#endif
-#ifndef LLONG_MIN
-#define LLONG_MIN (-LLONG_MAX - 1LL)
-#endif
-#ifndef ULLONG_MAX
-#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
-#endif
-
-const int buffer_size = 32768;
-uint8_t in_buffer[buffer_size];
-uint8_t mid_buffer[buffer_size];
-uint8_t out_buffer[buffer_size];
-
-
-int main( const int argc, const char * const argv[] )
- {
- if( argc < 2 )
- {
- std::fprintf( stderr, "Usage: lzcheck filename.txt\n" );
- return 1;
- }
-
- FILE *file = std::fopen( argv[1], "rb" );
- if( !file )
- {
- std::fprintf( stderr,
- "lzcheck: Can't open file `%s' for reading\n", argv[1] );
- return 1;
- }
-// std::fprintf( stderr, "lzcheck: Testing file `%s'\n", argv[1] );
-
- const int dictionary_size = 1 << 20;
- const int match_len_limit = 36;
- const long long member_size = LLONG_MAX;
- LZ_Encoder * encoder = LZ_compress_open( dictionary_size, match_len_limit,
- member_size );
- if( !encoder || LZ_compress_errno( encoder ) != LZ_ok )
- {
- const bool mem_error = ( LZ_compress_errno( encoder ) == LZ_mem_error );
- LZ_compress_close( encoder );
- if( mem_error )
- {
- std::fprintf( stderr, "lzcheck: Not enough memory.\n" );
- return 1;
- }
- std::fprintf( stderr,
- "lzcheck: internal error: Invalid argument to encoder.\n" );
- return 3;
- }
-
- LZ_Decoder * decoder = LZ_decompress_open();
- if( !decoder || LZ_decompress_errno( decoder ) != LZ_ok )
- {
- LZ_decompress_close( decoder );
- std::fprintf( stderr, "lzcheck: Not enough memory.\n" );
- return 1;
- }
-
- int retval = 0;
- while( retval <= 1 )
- {
- const int read_size = std::fread( in_buffer, 1, buffer_size, file );
- if( read_size <= 0 ) break; // end of file
-
- for( int l = 0, r = 1; r <= read_size; l = r, ++r )
- {
- while( r < read_size && in_buffer[r-1] != '\n' ) ++r;
- const int in_size = LZ_compress_write( encoder, in_buffer + l, r - l );
- if( in_size < r - l ) r = l + in_size;
- LZ_compress_sync_flush( encoder );
- const int mid_size = LZ_compress_read( encoder, mid_buffer, buffer_size );
- if( mid_size < 0 )
- {
- std::fprintf( stderr, "lzcheck: LZ_compress_read error: %s.\n",
- LZ_strerror( LZ_compress_errno( encoder ) ) );
- retval = 3; break;
- }
- LZ_decompress_write( decoder, mid_buffer, mid_size );
- const int out_size = LZ_decompress_read( decoder, out_buffer, buffer_size );
- if( out_size < 0 )
- {
- std::fprintf( stderr, "lzcheck: LZ_decompress_read error: %s.\n",
- LZ_strerror( LZ_decompress_errno( decoder ) ) );
- retval = 3; break;
- }
-
- if( out_size != in_size || std::memcmp( in_buffer + l, out_buffer, out_size ) )
- {
- std::fprintf( stderr, "lzcheck: Sync error at pos %d. in_size = %d, out_size = %d\n",
- l, in_size, out_size );
- for( int i = 0; i < in_size; ++i )
- std::fputc( in_buffer[l+i], stderr );
- if( in_buffer[l+in_size-1] != '\n' )
- std::fputc( '\n', stderr );
- for( int i = 0; i < out_size; ++i )
- std::fputc( out_buffer[i], stderr );
- std::fputc( '\n', stderr );
- retval = 1;
- }
- }
- }
-
- if( retval <= 1 )
- {
- std::rewind( file );
- if( LZ_compress_finish( encoder ) < 0 ||
- LZ_decompress_write( decoder, mid_buffer, LZ_compress_read( encoder, mid_buffer, buffer_size ) ) < 0 ||
- LZ_decompress_read( decoder, out_buffer, buffer_size ) != 0 ||
- LZ_compress_restart_member( encoder, member_size ) < 0 )
- {
- std::fprintf( stderr, "lzcheck: Can't finish member: %s.\n",
- LZ_strerror( LZ_decompress_errno( decoder ) ) );
- retval = 3;
- }
- }
-
- while( retval <= 1 )
- {
- const int read_size = std::fread( in_buffer, 1, buffer_size / 2, file );
- if( read_size <= 0 ) break; // end of file
-
- for( int l = 0, r = 1; r <= read_size; l = r, ++r )
- {
- while( r < read_size && in_buffer[r-1] != '\n' ) ++r;
- const int leading_garbage = (l == 0) ? std::min( r, read_size / 2 ) : 0;
- const int in_size = LZ_compress_write( encoder, in_buffer + l, r - l );
- if( in_size < r - l ) r = l + in_size;
- LZ_compress_sync_flush( encoder );
- if( leading_garbage )
- std::memset( mid_buffer, in_buffer[0], leading_garbage );
- const int mid_size = LZ_compress_read( encoder,
- mid_buffer + leading_garbage,
- buffer_size - leading_garbage );
- if( mid_size < 0 )
- {
- std::fprintf( stderr, "lzcheck: LZ_compress_read error: %s.\n",
- LZ_strerror( LZ_compress_errno( encoder ) ) );
- retval = 3; break;
- }
- LZ_decompress_write( decoder, mid_buffer, mid_size + leading_garbage );
- int out_size = LZ_decompress_read( decoder, out_buffer, buffer_size );
- if( out_size < 0 )
- {
- if( LZ_decompress_errno( decoder ) == LZ_header_error ||
- LZ_decompress_errno( decoder ) == LZ_data_error )
- {
- LZ_decompress_sync_to_member( decoder ); // remove leading garbage
- out_size = LZ_decompress_read( decoder, out_buffer, buffer_size );
- }
- if( out_size < 0 )
- {
- std::fprintf( stderr, "lzcheck: LZ_decompress_read error: %s.\n",
- LZ_strerror( LZ_decompress_errno( decoder ) ) );
- retval = 3; break;
- }
- }
-
- if( out_size != in_size || std::memcmp( in_buffer + l, out_buffer, out_size ) )
- {
- std::fprintf( stderr, "lzcheck: Sync error at pos %d. in_size = %d, out_size = %d\n",
- l, in_size, out_size );
- for( int i = 0; i < in_size; ++i )
- std::fputc( in_buffer[l+i], stderr );
- if( in_buffer[l+in_size-1] != '\n' )
- std::fputc( '\n', stderr );
- for( int i = 0; i < out_size; ++i )
- std::fputc( out_buffer[i], stderr );
- std::fputc( '\n', stderr );
- retval = 1;
- }
- }
- if( retval >= 3 ) break;
-
- if( LZ_compress_finish( encoder ) < 0 ||
- LZ_decompress_write( decoder, mid_buffer, LZ_compress_read( encoder, mid_buffer, buffer_size ) ) < 0 ||
- LZ_decompress_read( decoder, out_buffer, buffer_size ) != 0 ||
- LZ_decompress_reset( decoder ) < 0 ||
- LZ_compress_restart_member( encoder, member_size ) < 0 )
- {
- std::fprintf( stderr, "lzcheck: Can't restart member: %s.\n",
- LZ_strerror( LZ_decompress_errno( decoder ) ) );
- retval = 3; break;
- }
-
- const int size = std::min( 100, read_size );
- if( LZ_compress_write( encoder, in_buffer, size ) != size ||
- LZ_compress_finish( encoder ) < 0 ||
- LZ_decompress_write( decoder, mid_buffer, LZ_compress_read( encoder, mid_buffer, buffer_size ) ) < 0 ||
- LZ_decompress_read( decoder, out_buffer, 0 ) != 0 ||
- LZ_decompress_sync_to_member( decoder ) < 0 ||
- LZ_compress_restart_member( encoder, member_size ) < 0 )
- {
- std::fprintf( stderr, "lzcheck: Can't seek to next member: %s.\n",
- LZ_strerror( LZ_decompress_errno( decoder ) ) );
- retval = 3; break;
- }
- }
-
- LZ_decompress_close( decoder );
- LZ_compress_close( encoder );
- std::fclose( file );
- return retval;
- }
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