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-rw-r--r--lzcheck.c (renamed from lzcheck.cc)128
1 files changed, 66 insertions, 62 deletions
diff --git a/lzcheck.cc b/lzcheck.c
index ce53a41..19a1887 100644
--- a/lzcheck.cc
+++ b/lzcheck.c
@@ -1,5 +1,5 @@
/* Lzcheck - A test program for the lzlib library
- Copyright (C) 2009, 2010, 2011 Antonio Diaz Diaz.
+ Copyright (C) 2009, 2010, 2011, 2012 Antonio Diaz Diaz.
This program is free software: you have unlimited permission
to copy, distribute and modify it.
@@ -14,11 +14,11 @@
#define _FILE_OFFSET_BITS 64
-#include <algorithm>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
+#include <stdbool.h>
#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
#include "lzlib.h"
@@ -33,7 +33,11 @@
#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
#endif
-const int buffer_size = 32768;
+#ifndef min
+ #define min(x,y) ((x) <= (y) ? (x) : (y))
+#endif
+
+enum { buffer_size = 32768 };
uint8_t in_buffer[buffer_size];
uint8_t mid_buffer[buffer_size];
uint8_t out_buffer[buffer_size];
@@ -43,53 +47,52 @@ int main( const int argc, const char * const argv[] )
{
if( argc < 2 )
{
- std::fprintf( stderr, "Usage: lzcheck filename.txt\n" );
+ fprintf( stderr, "Usage: lzcheck filename.txt\n" );
return 1;
}
- FILE *file = std::fopen( argv[1], "rb" );
+ FILE *file = fopen( argv[1], "rb" );
if( !file )
{
- std::fprintf( stderr,
- "lzcheck: Can't open file `%s' for reading\n", argv[1] );
+ 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] );
+/* 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 );
+ struct LZ_Encoder * const 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" );
+ fprintf( stderr, "lzcheck: Not enough memory.\n" );
return 1;
}
- std::fprintf( stderr,
- "lzcheck: internal error: Invalid argument to encoder.\n" );
+ fprintf( stderr, "lzcheck: internal error: Invalid argument to encoder.\n" );
return 3;
}
- LZ_Decoder * decoder = LZ_decompress_open();
+ struct LZ_Decoder * const decoder = LZ_decompress_open();
if( !decoder || LZ_decompress_errno( decoder ) != LZ_ok )
{
LZ_decompress_close( decoder );
- std::fprintf( stderr, "lzcheck: Not enough memory.\n" );
+ 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
+ int i, l, r;
+ const int read_size = 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 )
+ for( 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 );
@@ -98,30 +101,30 @@ int main( const int argc, const char * const argv[] )
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 ) ) );
+ 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 ) ) );
+ 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 ) )
+ if( out_size != in_size || 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 );
+ 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' )
- std::fputc( '\n', stderr );
- for( int i = 0; i < out_size; ++i )
- std::fputc( out_buffer[i], stderr );
- std::fputc( '\n', stderr );
+ fputc( '\n', stderr );
+ for( i = 0; i < out_size; ++i )
+ fputc( out_buffer[i], stderr );
+ fputc( '\n', stderr );
retval = 1;
}
}
@@ -129,39 +132,40 @@ int main( const int argc, const char * const argv[] )
if( retval <= 1 )
{
- std::rewind( file );
+ 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 ) ) );
+ 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
+ int i, l, r;
+ const int read_size = 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 )
+ for( 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 leading_garbage = (l == 0) ? 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 );
+ 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 ) ) );
+ 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 );
@@ -171,28 +175,28 @@ int main( const int argc, const char * const argv[] )
if( LZ_decompress_errno( decoder ) == LZ_header_error ||
LZ_decompress_errno( decoder ) == LZ_data_error )
{
- LZ_decompress_sync_to_member( decoder ); // remove leading garbage
+ 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 ) ) );
+ 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 ) )
+ if( out_size != in_size || 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 );
+ 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' )
- std::fputc( '\n', stderr );
- for( int i = 0; i < out_size; ++i )
- std::fputc( out_buffer[i], stderr );
- std::fputc( '\n', stderr );
+ fputc( '\n', stderr );
+ for( i = 0; i < out_size; ++i )
+ fputc( out_buffer[i], stderr );
+ fputc( '\n', stderr );
retval = 1;
}
}
@@ -204,12 +208,12 @@ int main( const int argc, const char * const argv[] )
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 ) ) );
+ 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 );
+ const int 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 ||
@@ -217,14 +221,14 @@ int main( const int argc, const char * const argv[] )
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 ) ) );
+ 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 );
+ fclose( file );
return retval;
}