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-rw-r--r--lzcheck.c89
1 files changed, 51 insertions, 38 deletions
diff --git a/lzcheck.c b/lzcheck.c
index 9db661f..83e206d 100644
--- a/lzcheck.c
+++ b/lzcheck.c
@@ -1,19 +1,20 @@
/* Lzcheck - Test program for the lzlib library
- Copyright (C) 2009-2017 Antonio Diaz Diaz.
+ Copyright (C) 2009-2018 Antonio Diaz Diaz.
This program is free software: you have unlimited permission
to copy, distribute and modify it.
Usage is:
- lzcheck filename.txt
+ lzcheck filename.txt...
- This program reads the specified text file and then compresses it,
+ This program reads each 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 <ctype.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
@@ -34,6 +35,15 @@ uint8_t mid_buffer[buffer_size];
uint8_t out_buffer[buffer_size];
+void show_line( const uint8_t * const buffer, const int size )
+ {
+ int i;
+ for( i = 0; i < size; ++i )
+ fputc( isprint( buffer[i] ) ? buffer[i] : '.', stderr );
+ fputc( '\n', stderr );
+ }
+
+
int lzcheck( FILE * const file, const int dictionary_size )
{
const int match_len_limit = 16;
@@ -66,7 +76,7 @@ int lzcheck( FILE * const file, const int dictionary_size )
while( retval <= 1 )
{
- int i, l, r;
+ int l, r;
const int read_size = fread( in_buffer, 1, buffer_size, file );
if( read_size <= 0 ) break; /* end of file */
@@ -95,15 +105,11 @@ int lzcheck( FILE * const file, const int dictionary_size )
if( out_size != in_size || memcmp( in_buffer + l, out_buffer, out_size ) )
{
- fprintf( stderr, "lzcheck: Sync error at pos %d in_size = %d, out_size = %d\n",
+ fprintf( stderr, "lzcheck: Sync error at pos %d in_size = %d, "
+ "out_size = %d\n",
l, in_size, out_size );
- for( i = 0; i < in_size; ++i )
- fputc( in_buffer[l+i], stderr );
- if( in_buffer[l+in_size-1] != '\n' )
- fputc( '\n', stderr );
- for( i = 0; i < out_size; ++i )
- fputc( out_buffer[i], stderr );
- fputc( '\n', stderr );
+ show_line( in_buffer + l, in_size );
+ show_line( out_buffer, out_size );
retval = 1;
}
}
@@ -113,7 +119,8 @@ int lzcheck( FILE * const file, const int dictionary_size )
{
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_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 )
{
@@ -125,7 +132,7 @@ int lzcheck( FILE * const file, const int dictionary_size )
while( retval <= 1 )
{
- int i, l, r, size;
+ int l, r, size;
const int read_size = fread( in_buffer, 1, buffer_size / 2, file );
if( read_size <= 0 ) break; /* end of file */
@@ -133,7 +140,7 @@ int lzcheck( FILE * const file, const int dictionary_size )
{
int leading_garbage, in_size, mid_size, out_size;
while( r < read_size && in_buffer[r-1] != '\n' ) ++r;
- leading_garbage = (l == 0) ? min( r, read_size / 2 ) : 0;
+ leading_garbage = (l == 0) ? min( r, read_size ) / 2 : 0;
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 );
@@ -167,22 +174,19 @@ int lzcheck( FILE * const file, const int dictionary_size )
if( out_size != in_size || memcmp( in_buffer + l, out_buffer, out_size ) )
{
- fprintf( stderr, "lzcheck: Sync error at pos %d in_size = %d, out_size = %d, leading garbage = %d\n",
+ fprintf( stderr, "lzcheck: Sync error at pos %d in_size = %d, "
+ "out_size = %d, leading garbage = %d\n",
l, in_size, out_size, leading_garbage );
- for( i = 0; i < in_size; ++i )
- fputc( in_buffer[l+i], stderr );
- if( in_buffer[l+in_size-1] != '\n' )
- fputc( '\n', stderr );
- for( i = 0; i < out_size; ++i )
- fputc( out_buffer[i], stderr );
- fputc( '\n', stderr );
+ show_line( in_buffer + l, in_size );
+ show_line( out_buffer, out_size );
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_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 )
@@ -195,7 +199,8 @@ int lzcheck( FILE * const file, const int dictionary_size )
size = 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_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 )
@@ -214,26 +219,34 @@ int lzcheck( FILE * const file, const int dictionary_size )
int main( const int argc, const char * const argv[] )
{
- FILE * file;
- int retval;
+ int retval = 0, i;
+ int open_failures = 0;
+ const bool verbose = ( argc > 2 );
if( argc < 2 )
{
- fputs( "Usage: lzcheck filename.txt\n", stderr );
+ fputs( "Usage: lzcheck filename.txt...\n", stderr );
return 1;
}
- file = fopen( argv[1], "rb" );
- if( !file )
+ for( i = 1; i < argc && retval == 0; ++ i )
{
- fprintf( stderr, "lzcheck: Can't open file '%s' for reading.\n", argv[1] );
- return 1;
- }
-/* fprintf( stderr, "lzcheck: Testing file '%s'\n", argv[1] ); */
+ FILE * file = fopen( argv[i], "rb" );
+ if( !file )
+ {
+ fprintf( stderr, "lzcheck: Can't open file '%s' for reading.\n", argv[i] );
+ ++open_failures; continue;
+ }
+ if( verbose ) fprintf( stderr, " Testing file '%s'\n", argv[i] );
- retval = lzcheck( file, 65535 ); /* 65535,16 chooses fast encoder */
- if( retval == 0 )
- { rewind( file ); retval = lzcheck( file, 1 << 20 ); }
- fclose( file );
+ retval = lzcheck( file, 65535 ); /* 65535,16 chooses fast encoder */
+ if( retval == 0 )
+ { rewind( file ); retval = lzcheck( file, 1 << 20 ); }
+ fclose( file );
+ }
+ if( open_failures > 0 && verbose )
+ fprintf( stderr, "lzcheck: warning: %d %s failed to open.\n",
+ open_failures, ( open_failures == 1 ) ? "file" : "files" );
+ if( retval == 0 && open_failures ) retval = 1;
return retval;
}