From: Omar Farooq <ofarooq@MacBook-Pro.local>
Date: Mon, 4 Dec 2017 15:09:13 +0000 (-0500)
Subject: Adding compression level support for gzip
X-Git-Tag: v3.3.3~13^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e978f702a4120660772bae8a114e098bcabc966;p=thirdparty%2Flibarchive.git

Adding compression level support for gzip
---

diff --git a/libarchive/archive_write_add_filter_gzip.c b/libarchive/archive_write_add_filter_gzip.c
index 04eb06c1c..e4b3435e4 100644
--- a/libarchive/archive_write_add_filter_gzip.c
+++ b/libarchive/archive_write_add_filter_gzip.c
@@ -226,7 +226,12 @@ archive_compressor_gzip_open(struct archive_write_filter *f)
 		data->compressed[7] = (uint8_t)(t>>24)&0xff;
 	} else
 		memset(&data->compressed[4], 0, 4);
-	data->compressed[8] = 0; /* No deflate options */
+    if (data->compression_level == 9)
+	    data->compressed[8] = 2;
+    else if(data->compression_level == 1)
+	    data->compressed[8] = 4;
+    else
+	    data->compressed[8] = 0;
 	data->compressed[9] = 3; /* OS=Unix */
 	data->stream.next_out += 10;
 	data->stream.avail_out -= 10;