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/* compile using gcc -o zlib-test zlib-test.c -lz
usage: zlib-test <compression-level> <string>
where compression-level is from 0 to 9
*/
#include <stdio.h>
#include <zlib.h>
#include <string.h>
#include <stdlib.h>
int
main (int argc, char *argv[])
{
unsigned char dest[32];
unsigned long destLen = 31;
int retval, i;
int level;
char *endptr;
if (argc != 3) {
fprintf (stderr, "Usage: %s: <compression-level> <string>\n", argv[0]);
return 1;
}
level = strtol (argv[1], &endptr, 10);
if (endptr == argv[1] || level < 0 || level > 9) {
fprintf (stderr, "Invalid compression level\n");
return 1;
}
retval = compress2 (dest, &destLen, (unsigned char *)argv[2], strlen (argv[2]), level);
if (retval != Z_OK) {
fprintf (stderr, "Error calling zlib compress2 function: %d\n", retval);
return 1;
}
for (i = 0; i < destLen; i++)
printf ("\\x%02hhx", dest[i]);
printf ("\n");
return 0;
}
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