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Add -S option to print out summary after compression has been

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completed.

MFC after: 	2 weeks
This commit is contained in:
Maxim Sobolev 2016-03-10 21:36:24 +00:00
parent 30d816a7b5
commit d83e07789d
2 changed files with 12 additions and 3 deletions
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3
usr.bin/mkuzip/mkuzip.8
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@ -118,6 +118,9 @@ detects identical blocks in the input and replaces each subsequent occurence
of such block with pointer to the very first one in the output.
Setting this option results is moderate decrease of compressed image size,
typically around 3-5% of a final size of the compressed image.
.It Fl S
Print summary about the compression ratio as well as output
file size after file has been processed.
.El
.Sh NOTES
The compression ratio largely depends on the cluster size used.

12
usr.bin/mkuzip/mkuzip.c
View File

@ -90,6 +90,7 @@ int main(int argc, char **argv)
char *iname, *oname, *obuf, *ibuf;
uint64_t *toc;
int fdr, fdw, i, opt, verbose, no_zcomp, tmp, en_dedup;
int summary;
struct iovec iov[2];
struct stat sb;
uint32_t destlen;
@ -104,9 +105,10 @@ int main(int argc, char **argv)
verbose = 0;
no_zcomp = 0;
en_dedup = 0;
summary = 0;
handler = &uzip_fmt;
while((opt = getopt(argc, argv, "o:s:vZdL")) != -1) {
while((opt = getopt(argc, argv, "o:s:vZdLS")) != -1) {
switch(opt) {
case 'o':
oname = optarg;
@ -138,6 +140,10 @@ int main(int argc, char **argv)
handler = &ulzma_fmt;
break;
case 'S':
summary = 1;
break;
default:
usage();
/* Not reached */
@ -294,7 +300,7 @@ int main(int argc, char **argv)
}
close(fdr);
if (verbose != 0)
if (verbose != 0 || summary != 0)
fprintf(stderr, "compressed data to %ju bytes, saved %lld "
"bytes, %.2f%% decrease.\n", offset,
(long long)(sb.st_size - offset),
@ -337,7 +343,7 @@ static void
usage(void)
{
fprintf(stderr, "usage: mkuzip [-vZdL] [-o outfile] [-s cluster_size] "
fprintf(stderr, "usage: mkuzip [-vZdLS] [-o outfile] [-s cluster_size] "
"infile\n");
exit(1);
}