#include <time.h>
#include "lzw.h"
/********************************************************************
**
** This program gets a file name from the command line. It compresses the
** file, placing its output in a file named test.lzw. It then expands
** test.lzw into test.out. Test.out should then be an exact duplicate of
** the input file.
**
*************************************************************************/
main(int argc, char *argv[])
{
clock_t timer;
CLZWCompressFile lzw;
/*
** Get the file name, open it up, and open up the lzw output file.
*/
if (argc==1)
{
printf("Input file name to compress?\n");
return 0;
}
printf("testing %s...\n", argv[1]);
/*
** Compress the file.
*/
timer = clock();
int crunch = lzw.Compress(argv[1], "test.lzw");
timer = clock() - timer; //CLOCKS_PER_SEC
printf("compress time=%d ms, encoding=%d, size=%u", timer, lzw.get_bits(), crunch);
int filesize = lzw.u_io;
printf(" (ratio=%d%%)\n", filesize ? (filesize-crunch)*100/filesize : 0);
if(lzw.AnyIOErrors())
printf("***I/O ERROR***\n");
/*
** Expand the file.
*/
timer = clock();
int orig = lzw.Expand("test.lzw", "test.out");
timer = clock() - timer; //CLOCKS_PER_SEC
printf("expand time=%d ms, encoding=%d\n", timer, lzw.get_bits());
if(lzw.AnyIOErrors())
printf("***I/O ERROR***\n");
ATLASSERT(filesize == orig); // did we mangle the file?
return 0;
}
