diff options
Diffstat (limited to 'lzcheck.c')
| -rw-r--r-- | lzcheck.c | 89 |
1 files changed, 51 insertions, 38 deletions
@@ -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; } |